<RECORD 1>

 

Accession number:20114314454198

Title:Finite element analysis of large mirror based contact theory

Authors:Wu, Meng Yuan (1); Li, Ying Cai (1)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics of CAS, XIOPM, Xi'an, China

Corresponding author:Wu, M.Y.(wmy@opt.ac.cn)

Source title:2011 2nd International Conference on Mechanic Automation and Control Engineering, MACE 2011 - Proceedings

Abbreviated source title:Int. Conf. Mech. Autom. Control Eng., MACE - Proc.

Monograph title:2011 2nd International Conference on Mechanic Automation and Control Engineering, MACE 2011 - Proceedings

Issue date:2011

Publication year:2011

Pages:4964-4966

Article number:5988129

Language:Chinese

ISBN-13:9781424494392

Document type:Conference article (CA)

Conference name:2011 2nd International Conference on Mechanic Automation and Control Engineering, MACE 2011

Conference date:July 15, 2011 - July 17, 2011

Conference location:Inner Mongolia, China

Conference code:87002

Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States

Abstract:This paper describe the finite element analysis of large mirror based on contact theory. After several modules' computing author compared the calculated Result and test result, and make a conclusion that contact analyzing is more accurate than linear analysis for large mirror. &copy; 2011 IEEE.

Number of references:7

Main heading:Finite element method

Controlled terms:Mechanics - Mirrors - Optical testing

Uncontrolled terms:Contact theory - Large mirror - Linear analysis - Test results - Wavefront aberration

Classification code:741.3 Optical Devices and Systems - 921.6 Numerical Methods - 931.1 Mechanics

DOI:10.1109/MACE.2011.5988129

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 2>

 

Accession number:20110913706206

Title:Generation of 10-GHz ultra-short pulses with low time jitter in an actively mode-locked fiber laser

Authors:Feng, H. (1); Zhao, W. (1); Yan, S. (1); Xie, X.P. (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China

Corresponding author:Feng, H.(hfengoptics@gmail.com)

Source title:Laser Physics

Abbreviated source title:Laser Phys.

Volume:21

Issue:2

Issue date:February 2011

Publication year:2011

Pages:404-409

Language:English

ISSN:1054660X

E-ISSN:15556611

Document type:Conference article (CA)

Publisher:Maik Nauka-Interperiodica Publishing, Profsoyuznaya Ul 90, Moscow, 117997, Russia

Abstract:We have experimentally achieved the 8.3-ps ultra-short pulse at 10 GHz repetition rate with the time jitter as low as 590 fs in an actively mode-locked fiber ring laser. The ring-cavity laser is mode-locked by a semiconductor optical amplifier based on cross-gain modulation. The external CW source is modulated with radio frequency signal by an amplitude modulator as the external optical pulses and, then, injected into the fiber ring cavity to achieve active mode locking. Further investigating the laser output characteristics, it indicates that the linewidth of employed CW source affects properties of the generated ultra-short pulse, such as phase noise and time jitter. Ultra-short pulse at high repetition rate with low time jitter can be generated by the optimization of CW laser source. &copy; Pleiades Publishing, Ltd., 2011.

Number of references:32

Main heading:Mode-locked fiber lasers

Controlled terms:Fiber lasers - Light amplifiers - Pulse repetition rate - Ring lasers - Semiconductor lasers - Timing jitter - Ultrashort pulses

Uncontrolled terms:Active mode locking - Amplitude modulators - Cross gain modulation - CW-laser - Fiber ring cavity - Fiber-ring lasers - High repetition rate - Laser output - Low time jitter - Mode-locked  - Optical pulse - Radiofrequency signals - Repetition rate - Ring cavities - Short pulse - Time jitters

Classification code:716 Telecommunication; Radar, Radio and Television - 717 Optical Communication - 718 Telephone Systems and Related Technologies; Line Communications - 744 Lasers

DOI:10.1134/S1054660X11030017

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 3>

 

Accession number:20120514730019

Title:Multimodal learning for multi-label image classification

Authors:Pang, Yanwei (1); Ma, Zhao (1); Yuan, Yuan (2); Li, Xuelong (2); Wang, Kongqiao (3)

Author affiliation:(1) Department of Electrical Information Engineering, Tianjin University, Tianjin 300072, China; (2) Center for OPTical IMagery Analysis and Learning (OPTIMAL), Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, Shaanxi, China; (3) Nokia Research Center Beijing, Beijing 100176, China

Corresponding author:Pang, Y.

Source title:Proceedings - International Conference on Image Processing, ICIP

Abbreviated source title:Proc. Int. Conf. Image Process. ICIP

Monograph title:ICIP 2011: 2011 18th IEEE International Conference on Image Processing

Issue date:2011

Publication year:2011

Pages:1797-1800

Article number:6115811

Language:English

ISSN:15224880

ISBN-13:9781457713033

Document type:Conference article (CA)

Conference name:2011 18th IEEE International Conference on Image Processing, ICIP 2011

Conference date:September 11, 2011 - September 14, 2011

Conference location:Brussels, Belgium

Conference code:88213

Sponsor:IEEE; IEEE Signal Processing Society

Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States

Abstract:We tackle the challenge of web image classification using additional tags information. Unlike traditional methods that only use the combination of several low-level features, we try to use semantic concepts to represent images and corresponding tags. At first, we extract the latent topic information by probabilistic latent semantic analysis (pLSA) algorithm, and then use multi-label multiple kernel learning to combine visual and textual features to make a better image classification. In our experiments on PASCAL VOC'07 set and MIR Flickr set, we demonstrate the benefit of using multimodal feature to improve image classification. Specifically, we discover that on the issue of image classification, utilizing latent semantic feature to represent images and associated tags can obtain better classification results than other ways that integrating several low-level features. &copy; 2011 IEEE.

Number of references:11

Main heading:Image analysis

Controlled terms:Image classification - Semantics

Uncontrolled terms:Classification results - Latent semantics - Low-level features - Multi-label - Multi-modal - Multimodal features - Multiple Kernel Learning - Probabilistic latent semantic analysis - Semantic concept

Classification code:716 Telecommunication; Radar, Radio and Television - 741 Light, Optics and Optical Devices - 903.2 Information Dissemination

DOI:10.1109/ICIP.2011.6115811

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 4>

 

Accession number:20120214676543

Title:Reflective point-diffraction microscopic interferometer with long-term stability

Authors:Guo, Rongli (1); Yao, Baoli (1); Gao, Peng (1); Min, Junwei (1); Zheng, Juanjuan (1); Ye, Tong (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (2) Graduate University of Chinese Academy of Sciences, Beijing 100049, China

Corresponding author:Yao, B.(yaobl@opt.ac.cn)

Source title:Chinese Optics Letters

Abbreviated source title:Chin. Opt. Lett.

Volume:9

Issue:12

Issue date:December 2011

Publication year:2011

Article number:120002

Language:English

ISSN:16717694

Document type:Journal article (JA)

Publisher:Science Press, 18,Shuangqing Street,Haidian, Beijing, 100085, China

Abstract:An on-axis phase-shifting reflective point-diffraction microscopic interferometer for quantitative phase microscopy based on Michelson architecture is proposed. A cube beamsplitter splits the object wave spectrum into two copies within two arms. Reference wave is rebuilt in one arm by low-pass filtering on the object wave frequency spectrum with a pinhole-mask mirror, and interferes with the object wave from the other arm. Polarization phase-shifting is performed and phase imaging on microscale specimens is implemented. The experimental results demonstrate that the proposed scheme has the advantage of long-term stability due to its quasi common-path geometry with full use of laser energy. &copy; 2011 Chinese Optics Letters.

Number of references:24

Main heading:Interferometers

Controlled terms:Diffraction - Spectroscopy

Uncontrolled terms:Common-path - Laser energies - Long term stability - Low-pass filtering - Michelson - Micro-scales - Object waves - Phase imaging - Phase-shifting - Quantitative phase microscopies  - Reference waves

Classification code:711.1 Electromagnetic Waves in Different Media - 801 Chemistry - 941.3 Optical Instruments

DOI:10.3788/COL201109.120002

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 5>

 

Accession number:20112013989959

Title:An adaptive VQ algorithm used in interferential multi-spectral image

Authors:Wen, Jia (1); Ma, Cai-Wen (1); Shui, Peng-Lang (1)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (2) Institute of Artificial Intelligence and Robotics, Xi'an Jiaotong University, Xi'an 710049, China

Corresponding author:Ma, C.-W.(njugongsunce@163.com)

Source title:Guang Pu Xue Yu Guang Pu Fen Xi/Spectroscopy and Spectral Analysis

Abbreviated source title:Guang Pu Xue Yu Guang Pu Fen Xi

Volume:31

Issue:4

Issue date:April 2011

Publication year:2011

Pages:1033-1037

Language:Chinese

ISSN:10000593

CODEN:GYGFED

Document type:Journal article (JA)

Publisher:Science Press, 18,Shuangqing Street,Haidian, Beijing, 100085, China

Abstract:In the present paper, an adaptive LBG VQ algorithm is proposed based on the point to line model for the expansion of LBG VQ algorithm which was proposed in 2009, and using the algorithm proposed in this paper can achieve less error quantification, and can avoid the increase in bits of the larger index generated by the point to line expansion of LBG VQ algorithm. This new algorithm was used in lossless compression of interferential multi-spectral LASIS image, and experiment shows that the adaptive LBG VQ algorithm can remarkably improve the lossless compression performance of interferential multi-spectral image, and that if using these VQ algorithms above after Dual-Direction Prediction, the compression ratio generated by the point to line expansion of LBG VQ algorithm will be a little less than that generated by conventional LBG VQ algorithm, and the compression ratio generated by the algorithm proposed in this paper will be much larger than that generated by conventional LBG VQ algorithm.

Number of references:8

Main heading:Adaptive algorithms

Controlled terms:Compression ratio (machinery) - Expansion - Image coding - Image compression

Uncontrolled terms:Adaptive VQ - Compression ratios - Error quantification - Interferential multi-spectral image - LASIS - LBG vector quantification - Lossless compression - Multi-spectral - Multispectral images - Point-to-line  - VQ algorithm

Classification code:618.1 Compressors - 723 Computer Software, Data Handling and Applications - 741 Light, Optics and Optical Devices - 921 Mathematics - 951 Materials Science

DOI:10.3964/j.issn.1000-0593(2011)04-1033-05

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 6>

 

Accession number:20122715188557

Title:Utilizing homotopy for single image superresolution

Authors:Lu, Xiaoqiang (1); Yan, Pingkun (1); Yuan, Yuan (1); Li, Xuelong (1); Yuan, Haoliang (2)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, Shaanxi, China; (2) Faculty of Mathematics and Computer Science, Hubei University, Wuhan 430062, Hubei, China

Corresponding author:Lu, X.

Source title:1st Asian Conference on Pattern Recognition, ACPR 2011

Abbreviated source title:Asian Conf. Pattern Recogn., ACPR

Monograph title:1st Asian Conference on Pattern Recognition, ACPR 2011

Issue date:2011

Publication year:2011

Pages:316-320

Article number:6166654

Language:English

ISBN-13:9781457701221

Document type:Conference article (CA)

Conference name:1st Asian Conference on Pattern Recognition, ACPR 2011

Conference date:November 28, 2011 - November 28, 2011

Conference location:Beijing, China

Conference code:90727

Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States

Abstract:Learning an appropriate dictionary is a critical issue for sparse representation based super-resolution algorithms. A good dictionary can well represent an underlying image. In super-resolution algorithms, classical dictionary learning doesn't consider the information of test image which contains the information of the reconstructed image. In this paper, the new dictionary is design for image super-resolution, incorporating both training image patches and test image patches for training. It is important for dictionary learning to adaptively choose the training image patches and test image patches which effectively represent the reconstructed image structures. In the new learning strategy, a homotopy method is applied to choose the parameter that yields a proper balance between the use of training image patches and test image patches. The homotopy method is used to track the homotopy path leading to the solution to the desired problem at the terminal point. Compared with other state-of-the-art learning methods, our algorithm learns an over-complete dictionary by exploiting the information of the given test image and training images. The experimental results show that the proposed method is able to achieve better experimental results in terms of both PSNR and visual perception. &copy; 2011 IEEE.

Number of references:13

Main heading:Image reconstruction

Controlled terms:Optical resolving power - Pattern recognition

Uncontrolled terms:Critical issues - Dictionary learning - Homotopies - Homotopy method - Homotopy path - Image super-resolution - IS design - Learning methods - Learning strategy - Over-complete  - Reconstructed image - Single images - Sparse representation - Super resolution - Super resolution algorithms - Terminal points - Test images - Training image - Visual perception

Classification code:741 Light, Optics and Optical Devices - 741.1 Light/Optics

DOI:10.1109/ACPR.2011.6166654

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 7>

 

Accession number:20113214224073

Title:Lossless data embedding using generalized statistical quantity histogram

Authors:Gao, Xinbo (1); An, Lingling (1); Yuan, Yuan (2); Tao, Dacheng (3); Li, Xuelong (2)

Author affiliation:(1) School of Electronic Engineering, Xidian University, Xi'an, Shaanxi 710071, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, Shaanxi, China; (3) Center for Quantum Computation and Intelligent Systems, Faculty of Engineering and Information Technology, University of Technology, Sydney, Broadway NSW 2007, Australia

Corresponding author:Gao, X.(xbgao@mail.xidian.edu.cn)

Source title:IEEE Transactions on Circuits and Systems for Video Technology

Abbreviated source title:IEEE Trans Circuits Syst Video Technol

Volume:21

Issue:8

Issue date:August 2011

Publication year:2011

Pages:1061-1070

Article number:5735196

Language:English

ISSN:10518215

CODEN:ITCTEM

Document type:Journal article (JA)

Publisher:Institute of Electrical and Electronics Engineers Inc., 445 Hoes Lane / P.O. Box 1331, Piscataway, NJ 08855-1331, United States

Abstract:Histogram-based lossless data embedding (LDE) has been recognized as an effective and efficient way for copyright protection of multimedia. Recently, a LDE method using the statistical quantity histogram has achieved good performance, which utilizes the similarity of the arithmetic average of difference histogram (AADH) to reduce the diversity of images and ensure the stable performance of LDE. However, this method is strongly dependent on some assumptions, which limits its applications in practice. In addition, the capacities of the images with the flat AADH, e.g., texture images, are a little bit low. For this purpose, we develop a novel framework for LDE by incorporating the merits from the generalized statistical quantity histogram (GSQH) and the histogram-based embedding. Algorithmically, we design the GSQH driven LDE framework carefully so that it: 1) utilizes the similarity and sparsity of GSQH to construct an efficient embedding carrier, leading to a general and stable framework; 2) is widely adaptable for different kinds of images, due to the usage of the divide-and-conquer strategy; 3) is scalable for different capacity requirements and avoids the capacity problems caused by the flat histogram distribution; 4) is conditionally robust against JPEG compression under a suitable scale factor; and 5) is secure for copyright protection because of the safe storage and transmission of side information. Thorough experiments over three kinds of images demonstrate the effectiveness of the proposed framework. &copy; 2011 IEEE.

Number of references:31

Main heading:Graphic methods

Controlled terms:Copyrights

Uncontrolled terms:Capacity problems - Capacity requirement - Copyright protections - Difference histograms - Divide and conquer - Flat histograms - Image Watermarking - JPEG compression - Lossless data embedding - reversibility  - Safe storage - Scale Factor - Side information - Statistical quantity - Texture image

Classification code:902.1 Engineering Graphics - 903 Information Science

DOI:10.1109/TCSVT.2011.2130410

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 8>

 

Accession number:20120314700444

Title:Generation of 10-GHz duty-cycle tunable square optical pulse in an SOA-based mode-locked fiber laser

Authors:Luo, D. (1); Yan, S.Y. (1); Xie, X.P. (1); Zhao, W. (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (2) Graduate University of Chinese Academy of Sciences, Beijing 100049, China

Corresponding author:Luo, D.(xiao1234xiao1234@163.com)

Source title:Laser Physics

Abbreviated source title:Laser Phys.

Volume:21

Issue:11

Issue date:November 2011

Publication year:2011

Pages:1909-1913

Language:English

ISSN:1054660X

E-ISSN:15556611

Document type:Journal article (JA)

Publisher:Maik Nauka-Interperiodica Publishing, Profsoyuznaya Ul 90, Moscow, 117997, Russia

Abstract:We demonstrate the generation of 10-GHz optical square pulses by injecting a picosecond pulse train into an SOA-based mode-locked fiber laser. The novel scheme exploits nonlinear effects and gain saturation phenomenon in the semiconductor optical amplifier (SOA). This technique uses gain-compression dynamics between the input pulses and the generated ones in gain-saturated SOA to form square pulses. The center wavelength of the generated optical square pulse can be tuned from 1530 to 1570 nm by adjusting the center wavelength of the optical band pass filter (OBPF) in the SOA-based mode-locked fiber ring laser. The duty cycle of the output pulse can be tuned from 12.7 to 88.4%, which strongly depends on the input power and intra-cavity power. &copy; Pleiades Publishing, Ltd., 2011.

Number of references:44

Main heading:Mode-locked fiber lasers

Controlled terms:Bandpass filters - Fiber lasers - Light amplifiers - Light pulse generators - Ring lasers - Semiconductor lasers

Uncontrolled terms:Center wavelength - Duty cycles - Fiber-ring lasers - Gain saturation - Input power - Input pulse - Intracavities - Mode-locked - Nonlinear effect - Optical bandpass filters  - Optical pulse - Output pulse - Pico-second pulse - Square pulse

Classification code:703.2 Electric Filters - 741.1 Light/Optics - 744 Lasers

DOI:10.1134/S1054660X11190224

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 9>

 

Accession number:20114914584037

Title:Optical system design of space fisheye camera

Authors:Yan, Aqi (1); Yang, Jianfeng (1); Cao, Jianzhong (1); Zhu, Qing (1); Zhang, Zhi (1); Wu, Dengshan (1); Wang, Hao (1)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, Shaanxi 710119, China; (2) Graduate University of Chinese Academy of Sciences, Beijing 100049, China

Corresponding author:Yan, A.(yanaqi@opt.ac.cn)

Source title:Guangxue Xuebao/Acta Optica Sinica

Abbreviated source title:Guangxue Xuebao

Volume:31

Issue:10

Issue date:October 2011

Publication year:2011

Pages:1022004-1-1022004-4

Language:Chinese

ISSN:02532239

CODEN:GUXUDC

Document type:Journal article (JA)

Publisher:Chinese Optical Society, P.O. Box 80, Xi'an, 710068, China

Abstract:Optical system of a space fisheye camera based on 1/3 inch (1 inch=25.4 mm) CCD is designed considering the space environment. The focal length of the fisheye optical system is 2.1 mm, the F number is 4, and the field of view is 210&deg;. The required working temperature is between -40&deg;C~+60&deg;C. After careful studying the influence of space environment such as the space &gamma; radiation and ultraviolet radiation, temperature change and vacuum on the optical system, the technique for keeping image quality in space environment is put forward. The fisheye lens can reach excellent imaging quality in such an austere environment, and provide important guarantee for information capture with extreme wide-angle view on the orbit.

Number of references:10

Main heading:Optical systems

Controlled terms:Cameras - Image quality - Optical design - Systems analysis - Ultraviolet radiation

Uncontrolled terms:Anti-radiation - F number - Field of views - Fish-eye - Fish-eye cameras - Fish-eye lens - Focal lengths - Imaging quality - Space cameras - Space environment  - Temperature changes - Wide-angle lens - Working temperatures

Classification code:741 Light, Optics and Optical Devices - 742.2 Photographic Equipment - 961 Systems Science

DOI:10.3788/AOS201131.1022004

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 10>

 

Accession number:20121914992993

Title:Optical trapping with cylindrical vector beams

Authors:Yao, Baoli (1); Yan, Shaohui (1); Lei, Ming (1); Peng, Fei (1); Ma, Baiheng (1); Ye, Tong (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China

Corresponding author:Yao, B.(yaobl@opt.ac.cn)

Source title:2011 Functional Optical Imaging, FOI 2011

Abbreviated source title:Funct. Opt. Imaging, FOI

Monograph title:2011 Functional Optical Imaging, FOI 2011

Issue date:2011

Publication year:2011

Article number:6154814

Language:English

ISBN-13:9781467304511

Document type:Conference article (CA)

Conference name:2011 Functional Optical Imaging, FOI 2011

Conference date:December 3, 2011 - December 4, 2011

Conference location:Ningbo, China

Conference code:89481

Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States

Abstract:Recent development of cylindrical vector beams prompts its application in optical trapping, which shows more effective and improved trapping efficiency in contrast to the traditional Gaussian beam of spatially homogeneous polarization. Using the T-matrix method and vectorial diffraction theory, we calculated and compared the radiation forces exerted on dielectric particles respectively by the linearly polarized, radially polarized and azimuthally polarized beams. Theoretical calculations show that the radially polarized beam can improve the axial trapping efficiency of high-refractive-index larger particles by reducing the scattering force due to the vanishing axial component of Poynting vector near the focus, while the azimuthally polarized beam can not only steadily trap low-refractive-index small particles at the focus center but also can trap multiple high-refractive-index particles around the focus center in virtue of the hollow-ring configuration. The dependences of the trapping efficiencies on the beam parameters, particle size and the numerical aperture of objective lens are discussed. The performances of optical trapping, manipulating and sorting of biological cells, organelles and various micro-particles are demonstrated. &copy; 2011 IEEE.

Main heading:Efficiency

Controlled terms:Electromagnetic waves - Gaussian beams - Optical image storage - Refractive index

Uncontrolled terms:Axial components - Beam parameter - Biological cells - Cylindrical vector beam - Dielectric particles - Linearly polarized - Micro-particles - Numerical aperture - Objective lens - Opticaltrapping  - Polarized beams - Poynting vectors - Radially polarized - Radially polarized beam - Radiation forces - Scattering forces - Small particles - T-matrix method - Theoretical calculations - Trapping efficiencies  - Vectorial diffraction

Classification code:711 Electromagnetic Waves - 741.1 Light/Optics - 741.3 Optical Devices and Systems - 913.1 Production Engineering

DOI:10.1109/FOI.2011.6154814

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 11>

 

Accession number:IP51392434

Title:Vehicle detection and tracking in airborne videos by multi-motion layer analysis

Authors:Cao, Xianbin (1); Lan, Jinhe (1); Yan, Pingkun (3); Li, Xuelong (3)

Author affiliation:(1) University of Science and Technology of China, Hefei, 230026, China; (2) BeiHang University, Beijing, 100083, China; (3) Center for OPTical IMagery Analysis and Learning (OPTIMAL), State Key Laboratory of Transient Optics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, 710119, China

Corresponding author:Yan, P.(pingkun@ieee.org)

Source title:Machine Vision and Applications

Abbreviated source title:Mach Vision Appl

Issue date:2011

Publication year:2011

Pages:1-15

Language:English

ISSN:09328092

E-ISSN:14321769

CODEN:MVAPEO

Document type:Article in Press

Abstract:Airborne vehicle detection and tracking systems equipped on unmanned aerial vehicles (UAVs) are receiving more and more attention due to their advantages of high mobility, fast deployment and large surveillance scope. However, such systems are difficult to develop because of factors like UAV motion, scene complexity, and especially the partial occlusion of targets. To address these problems, a new framework of multi-motion layer analysis is proposed to detect and track moving vehicles in airborne platform. After motion layers are constructed, they are maintained over time for tracking vehicles. Most importantly, since the vehicle motion layers can be maintained even when the vehicles are only partially observed, the proposed method is robust to partial occlusion. Our experimental results showed that (1) compared with other previous algorithms, our method can achieve better performance in terms of higher detection rate and lower false positive rate; (2) it is more efficient and more robust to partial occlusion; (3) it is able to meet the demand of real time application due to its computational simplicity. &copy; 2011 Springer-Verlag.

Number of references:40

Main heading:Tracking (position)

Controlled terms:Computational efficiency - Unmanned aerial vehicles (UAV) - Vehicles

Uncontrolled terms:Airborne platforms - Airborne vehicles - Airborne video - Detection rates - False positive rates - High mobility - Motion layers - Moving vehicles - Partial occlusions - Real-time application  - Scene complexity - Vehicle detection - Vehicle motion

Classification code:432 Highway Transportation - 652.1 Aircraft, General - 716.2 Radar Systems and Equipment - 921 Mathematics

DOI:10.1007/s00138-011-0336-x

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 12>

 

Accession number:20112214018839

Title:Travelogue enriching and scenic spot overview based on textual and visual topic models

Authors:Pang, Yanwei (1); Lu, Xin (1); Yuan, Yuan (2); Li, Xuelong (2)

Author affiliation:(1) School of Electronic Information Engineering, Tianjin University, Tianjin 300072, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, Shaanxi, China

Corresponding author:Pang, Y.(pyw@tju.edu.cn)

Source title:International Journal of Pattern Recognition and Artificial Intelligence

Abbreviated source title:Int J Pattern Recognit Artif Intell

Volume:25

Issue:3

Issue date:May 2011

Publication year:2011

Pages:373-390

Language:English

ISSN:02180014

CODEN:IJPIEI

Document type:Journal article (JA)

Publisher:World Scientific Publishing Co. Pte. Ltd, 5 Toh Tuck Link, Singapore, 596224, Singapore

Abstract:We consider the problem of enriching the travelogue associated with a small number (even one) of images with more web images. Images associated with the travelogue always consist of the content and the style of textual information. Relying on this assumption, in this paper, we present a framework of travelogue enriching, exploiting both textual and visual information generated by different users. The framework aims to select the most relevant images from automatically collected candidate image set to enrich the given travelogue, and form a comprehensive overview of the scenic spot. To do these, we propose to build two-layer probabilistic models, i.e. a text-layer model and image-layer models, on offline collected travelogues and images. Each topic (e.g. Sea, Mountain, Historical Sites) in the text-layer model is followed by an image-layer model with sub-topics learnt (e.g. the topic of sea is with the sub-topic like beach, tree, sunrise and sunset). Based on the model, we develop strategies to enrich travelogues in the following steps: (1) remove noisy names of scenic spots from travelogues; (2) generate queries to automatically gather candidate image set; (3) select images to enrich the travelogue; and (4) choose images to portray the visual content of a scenic spot. Experimental results on Chinese travelogues demonstrate the potential of the proposed approach on tasks of travelogue enrichment and the corresponding scenic spot illustration. &copy; 2011 World Scientific Publishing Company.

Number of references:32

Main heading:Models

Controlled terms:Concentration (process) - Data mining - Landforms - User interfaces

Uncontrolled terms:Image sets - Offline - Probabilistic models - Scenic spot - text mining - Textual information - Topic model - travelogue - Two layers - User-generated content  - Visual content - Visual information - Web images

Classification code:481.1 Geology - 722.2 Computer Peripheral Equipment - 723.3 Database Systems - 802.3 Chemical Operations - 902.1 Engineering Graphics

DOI:10.1142/S0218001411008671

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 13>

 

Accession number:20111913967412

Title:Enhancement of nonreciprocal phase shift by magneto-optical slot waveguide with a compensation wall

Authors:Zhang, Wenfu (1); Mu, Jian-Wei (3); Huang, Wei-Ping (3); Zhao, Wei (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (2) Graduate School of the Chinese Academy of Sciences, Beijing 100049, China; (3) Department of Electrical and Computer Engineering, McMaster University, Hamilton, ON L8S 4K1, Canada

Corresponding author:Zhang, W.(wfu.zhang@gmail.com)

Source title:Applied Physics Letters

Abbreviated source title:Appl Phys Lett

Volume:98

Issue:17

Issue date:April 25, 2011

Publication year:2011

Article number:171109

Language:English

ISSN:00036951

CODEN:APPLAB

Document type:Journal article (JA)

Publisher:American Institute of Physics, 2 Huntington Quadrangle, Suite N101, Melville, NY 11747-4502, United States

Abstract:We demonstrated that the nonreciprocal phase shift (NPS) can be efficiently enhanced by introducing a low-index magneto-optical (MO) slot with a compensation wall (CW) in a high-index non-MO waveguide. The proposed structure has been examined by a perturbation theory and it is found that by adjusting the slot width and waveguide height, more than 20 times enhancement of NPS comparing with the rib waveguide with a CW can be realized. &copy; 2011 American Institute of Physics.

Number of references:24

Main heading:Waveguides

Controlled terms:Magnetos - Perturbation techniques - Phase shift

Uncontrolled terms:High-index - Magneto-optical - Nonreciprocal phase shift - Perturbation theory - Rib waveguides - Slot width

Classification code:708.4 Magnetic Materials - 714.3 Waveguides - 921 Mathematics - 942.2 Electric Variables Measurements

DOI:10.1063/1.3584035

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

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Accession number:20112013990640

Title:Eliminating influence of grating encoder's eccentricity and vibration to moir&#233; fringes signal by four reading heads

Authors:Zhu, Fan (1); Wu, Yiming (1); Liu, Changchun (2)

Author affiliation:(1) Laboratory of Optical Orientation and Collimation, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, Shaanxi 710119, China; (2) The 61541st Troop of the People's Liberation Army, Beijing 100094, China

Corresponding author:Zhu, F.(zhufan2080@163.com)

Source title:Guangxue Xuebao/Acta Optica Sinica

Abbreviated source title:Guangxue Xuebao

Volume:31

Issue:4

Issue date:April 2011

Publication year:2011

Article number:0412008

Language:Chinese

ISSN:02532239

CODEN:GUXUDC

Document type:Journal article (JA)

Publisher:Chinese Optical Society, P.O. Box 80, Xi'an, 710068, China

Abstract:Presently, grating encoder is an important way to accurately measure angle, however, the eccentric inaccuracy of assembling adjusting and the vibration of rotating shaft influence grating encoder's measuring accuracy and then confine the application range of grating encoder. A new method to eliminate the influence of eccentricity and vibration with four reading heads is proposed and the theoretical derivation and simulation results are given out. The conclusion hints that the method which gets moire&acute; fringes signal by four reading heads well-distributed along the circumference of grating is more effective in improving the measuring accuracy than the one that uses double reading heads. Consequently, the new method decreases the requirements of assembling adjusting. The direction and magnitude also can be solved by four reading heads, so the influence of rotating shaft can be eliminated. All the results are useful to deeper research.

Number of references:11

Main heading:Rotation

Controlled terms:Rotating machinery

Uncontrolled terms:Application range - Double reading - Eccentric inaccuracy - Grating encoder - Measuring accuracy - Phase - Rotating shaft - Simulation result - Vibration of rotating shaft

Classification code:601.1 Mechanical Devices

DOI:10.3788/AOS201131.0412008

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

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Accession number:20120314692799

Title:Optimization of the high repetition rate all-fiber two-stage ytterbium-doped fiber amplifier

Authors:Yun, Jian (1); Gao, Cunxiao (1); Zhu, Shaolan (1); Sun, Chuandong (1); Dong, Lijun (2)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (2) Graduate School of the Chinese Academy of Sciences, Beijing 100039, China

Corresponding author:Gao, C.

Source title:Proceedings of SPIE - The International Society for Optical Engineering

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:8198

Monograph title:2011 International Conference on Optical Instruments and Technology: Optoelectronic Devices and Integration

Issue date:2011

Publication year:2011

Article number:81980X

Language:English

ISSN:0277786X

CODEN:PSISDG

ISBN-13:9780819488398

Document type:Journal article (JA)

Conference name:2011 International Conference on Optical Instruments and Technology: Optoelectronic Devices and Integration

Conference date:November 6, 2011 - November 9, 2011

Conference location:Beijing, China

Conference code:88092

Sponsor:The Society of Photo-Optical Instrumentation Engineers (SPIE); China Instrument and Control Society (CIS); Chinese Optical Society (COS)

Publisher:SPIE, P.O. Box 10, Bellingham, WA 98227-0010, United States

Abstract:Based on the technique of master oscillator power amplifier (MOPA), a two-stage ytterbium-doped fiber amplifier (YDFA) with all-fiber structure is theoretically simulated. The seed signal operating at the wavelength of 1064 nm has the characteristic of high repetition rate (10 MHz), ultrashort pulse duration (10 ps), low signal power input (20&mu;W) and single longitudinal mode. The gain (and amplification stimulation emission power) is calculated at the different pump powers and gain fiber lengths of YDFA pumped by 975 nm. In addition, the amplifications at the different signal power inputs (1-25&mu;W) are also simulated. The numerical results can be used to optimize the YDFA. &copy; 2011 SPIE.

Number of references:12

Main heading:Fibers

Controlled terms:Amplification - Fiber amplifiers - Optical instruments - Optical phase conjugation - Optimization - Optoelectronic devices - Power amplifiers - Pulse repetition rate - Ytterbium

Uncontrolled terms:1064 nm - All fiber - ASE noise - Emission power - Gain fibers - High repetition rate - Master oscillator power amplifiers - Numerical results - Pump power - Signal power  - simulation - Single longitudinal mode - Two stage - Ytterbium doped fibers - Ytterbium-doped fiber amplifier

Classification code:817 Plastics and Other Polymers: Products and Applications - 812 Ceramics, Refractories and Glass - 744.4 Solid State Lasers - 921.5 Optimization Techniques - 744.1 Lasers, General - 713.1 Amplifiers - 547.2 Rare Earth Metals - 741 Light, Optics and Optical Devices

DOI:10.1117/12.917087

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

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Accession number:20111713936103

Title:SG diagnostic equipment: Gating pinhole framing camera

Authors:Bai, Xiao-Hong (1); Bai, Yong-Lin (1); Liu, Bai-Yu (1); Qin, Jun-Jun (1); Zhao, Jun-Ping (1); Wang, Bo (1); Yang, Wen-Zheng (1); Gou, Yong-Sheng (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Xi'an 710119, China; (2) Graduate University of Chinese Acad. of Sci., Beijing 100039, China

Corresponding author:Bai, X.-H.(bxh@opt.ac.cn)

Source title:Guangxue Jingmi Gongcheng/Optics and Precision Engineering

Abbreviated source title:Guangxue Jingmi Gongcheng

Volume:19

Issue:2

Issue date:February 2011

Publication year:2011

Pages:367-373

Language:Chinese

ISSN:1004924X

CODEN:GJGOF4

Document type:Journal article (JA)

Publisher:Chinese Academy of Sciences, 140 Renmin Street, Changchun, 130022, China

Abstract:In order to install an X-ray Pinhole Framing Camera (X-PFC) conveniently and run smoothly in the SG3 prototype system (SG3-PS) of Inertial Confinement Fusion (ICF), a novel type X-PFC was developed on the basis of original models and a conical barrel pinhole imaging system was desined to eliminate the stray light and to obtain the pinhole imaging in the SG3-PS. The matching parameters were evidently improved by designing a long micro-strip in new tube, which could keep the number of imagings to be still 16 frames in the limited space by using new type fluorescent screen, steady clamp method and the way of sealing up with two optics fiber plates. The save quality of new tube was improved greatly by gating pulse voltage on the screen. Furthermore, the high-voltage pulse generators and all of monitoring facilities were assembled in the cylinder barrel type vacuum seal configuration by PC104. Experiments show that all kinds of technical indexes have been upgraded when some parts of the new camera structure are redesigned and experimental results are received better.

Number of references:13

Main heading:Inertial confinement fusion

Controlled terms:Cameras - Cylinder configurations - Cylinders (shapes) - Electric potential - Fluorescence - Fluorescent screens - Image storage tubes - Pinhole cameras - Plates (structural components) - Pulse generators  - Signal generators

Uncontrolled terms:Diagnostic equipment - Fast diagnosis - Framing Camera - Gating pulse - High-voltage pulse generator - Limited space - Matching parameters - Micro channel plate - Microstripes - Optics fiber  - Original model - Pinhole imaging - Pinhole imaging systems - Prototype system - Screen - Vacuum seals

Classification code:741.3 Optical Devices and Systems - 741.1 Light/Optics - 715 Electronic Equipment, General Purpose and Industrial - 714.1 Electron Tubes - 742.2 Photographic Equipment - 713.4 Pulse Circuits - 621.2 Fusion Reactors - 612.1 Internal Combustion Engines, General - 408.2 Structural Members and Shapes - 701.1 Electricity: Basic Concepts and Phenomena

DOI:10.3788/OPE.20111902.0367

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

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Accession number:20112013982352

Title:Multiple responses of TPP-assisted near-perfect absorption in metal/Fibonacci quasiperiodic photonic crystal

Authors:Gong, Yongkang (1); Liu, Xueming (1); Wang, Leiran (1); Lu, Hua (1); Wang, Guoxi (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China

Corresponding author:Gong, Y.

Source title:Optics Express

Abbreviated source title:Opt. Express

Volume:19

Issue:10

Issue date:May 9, 2011

Publication year:2011

Pages:9759-9769

Language:English

E-ISSN:10944087

Document type:Journal article (JA)

Publisher:Optical Society of America, 2010 Massachusetts Ave, NW, Washington, DC, DC 20036-1023, United States

Abstract:Absorption properties in one-dimensional quasiperiodic photonic crystal composed of a thin metallic layer and dielectric Fibonacci multilayers are investigated. It is found that a large number of photonic stopbands can occur at the dielectric Fibonacci multilayers. Tamm plasmon polaritons (TPPs) with the frequencies locating at each photonic stopband are excited at the interface between the metallic layer and the dielectric layer, leading to almost perfect absorption for the energy of incident wave. By adjusting the length of dielectric layer with higher refractive-index or the Fibonacci order, the number of absorption peaks can be tuned effectively and enlarged significantly. &copy; 2011 Optical Society of America.

Number of references:33

Main heading:Absorption

Controlled terms:Multilayers - Photonic crystals

Uncontrolled terms:Absorption peaks - Absorption property - Dielectric layer - Fibonacci multilayers - Incident waves - Metallic layers - Multiple response - Plasmon-polaritons - Quasi-periodic photonic crystals - Stop-bands  - Stopband - Thin metallic layer

Classification code:931.2 Physical Properties of Gases, Liquids and Solids - 933.1 Crystalline Solids

DOI:10.1364/OE.19.009759

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 18>

 

Accession number:20114214439558

Title:Discrete complex amplitude filter for ultra long optical tube

Authors:Wang, Jiming (1); Liu, Qingliang (1); Liu, Youwen (1); Chen, Weibin (3); Zhan, Qiwen (3)

Author affiliation:(1) College of Science, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'an 710119, China; (3) Electro-Optics Program, University of Dayton, 300 College Park, Dayton OH 45469, United States

Corresponding author:Wang, J.(jimingw@nuaa.edu.cn)

Source title:Proceedings of SPIE - The International Society for Optical Engineering

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:8097

Monograph title:Optical Trapping and Optical Micromanipulation VIII

Issue date:2011

Publication year:2011

Article number:809722

Language:English

ISSN:0277786X

CODEN:PSISDG

ISBN-13:9780819487070

Document type:Conference article (CA)

Conference name:Optical Trapping and Optical Micromanipulation VIII

Conference date:August 21, 2011 - August 25, 2011

Conference location:San Diego, CA, United states

Conference code:86932

Sponsor:The Society of Photo-Optical Instrumentation Engineers (SPIE)

Publisher:SPIE, P.O. Box 10, Bellingham, WA 98227-0010, United States

Abstract:We proposed a discrete complex amplitude filter to create a focused hollow field with ultra long depth of focus. As for a high numerical aperture lens (NA=0.95), the focused field in the focal region can be engineered into a field like a long "tube" with flat wall through manipulating the distribution of the transmitted amplitude and phase at the pupil plane. This complex amplitude filter at the pupil plane can be discretized into multiple annular zones with different radius, transmittances and phase delays. A focused tube field with long depth of focus(&sim;9&lambda;) has been created as an example through separating and averaging of the projected pupil radiation pattern of magnetic dipole array in the focal region. Imperfections of the designed filter will influence the quality of the generated optical tube field and tolerance deviation of the radius, transmittance and phase delay in each zone is discussed. For the optical trapping, this created tube field can expand the manipulated distance and increase the trapped particles' numbers. &copy; 2011 SPIE.

Number of references:13

Main heading:Tubes (components)

Controlled terms:Amplitude modulation - Micromanipulators

Uncontrolled terms:Azimuthal polarization - Depth of focus - Discrete complexes - Optical tube - Opticaltrapping

Classification code:616.1 Heat Exchange Equipment and Components - 716 Telecommunication; Radar, Radio and Television - 731.5 Robotics

DOI:10.1117/12.893756

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

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Accession number:20113714332863

Title:Optical system design of a two-linear array stereoscopic mapping CCD camera

Authors:Chang, Lingying (1); Zhao, Baochang (1); Yang, Jianfeng (1); Wen, Desheng (1)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, Shaanxi 710119, China; (2) Graduate University of Chinese Academy of Sciences, Beijing 100049, China

Corresponding author:Wen, D.(ven@opt.ac.cn)

Source title:Zhongguo Jiguang/Chinese Journal of Lasers

Abbreviated source title:Zhongguo Jiguang

Volume:38

Issue:8

Issue date:August 2011

Publication year:2011

Article number:0816001

Language:Chinese

ISSN:02587025

CODEN:ZHJIDO

Document type:Journal article (JA)

Publisher:Science Press, 18,Shuangqing Street,Haidian, Beijing, 100085, China

Abstract:In order to obtain the image of 7 m resolution with the Chang'E-2 CCD stereoscopic camera on the 100-km-altitude circular orbit, a two-linear array CCD camera stereoscopic mapping optical system is designed. The principle of two-linear array stereo mapping camera is described. According to the satellite requirements, the main parameters of the optical system are calculated detailedly. The focal length of the system is 144.4 mm, the view angle is 42'E-2 satellite CCD stereoscopic camera are obtained. The images are clear and rich of detail information, demonstrating the effectiveness of the optical system.

Number of references:8

Main heading:CCD cameras

Controlled terms:Array processing - Mapping - Optical design - Optical systems - Systems analysis

Uncontrolled terms:Circular orbit - Focal lengths - Main parameters - Stereo mapping - Stereoscopic camera - Two-linear array

Classification code:961 Systems Science - 902.1 Engineering Graphics - 741.3 Optical Devices and Systems - 741.1 Light/Optics - 732 Control Devices - 716 Telecommunication; Radar, Radio and Television - 714.2 Semiconductor Devices and Integrated Circuits

DOI:10.3788/CJL201138.0816001

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

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Accession number:20120414719407

Title:Femtosecond laser machining characteristics in a single-crystal superalloy

Authors:Zhang, Wei (1); Cheng, Guanghua (2); Feng, Qiang (1); Cao, Lamei (4)

Author affiliation:(1) State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 100083, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (3) National Center for Materials Service Safety, University of Science and Technology Beijing, Beijing 100083, China; (4) National Key Laboratory of Science, Technology on Advanced High Temperature Structural Materials, Beijing Institute of Aeronautical Materials, Beijing 100095, China

Corresponding author:Feng, Q.(qfeng@skl.ustb.edu.cn)

Source title:Rare Metals

Abbreviated source title:Rare Met

Volume:30

Issue:SUPPL.1

Issue date:March 2011

Publication year:2011

Pages:639-642

Language:English

ISSN:10010521

E-ISSN:18677185

CODEN:RARME8

Document type:Journal article (JA)

Publisher:University of Science and Technology Beijing, 30 Xueyuan Lu, Beijing, 100083, China

Abstract:Femtosecond laser machining characteristics of a nickel-base single-crystal superalloy were investigated as a function of laser fluence and the number of laser pulses. The significant decrease of recast layer for femtosecond laser machining was observed compared with that for nanosecond laser machining. The ablation thresholds for 1, 10, and 100 femtosecond pulse exposure were measured. Two ablation regions of the ablated crater were observed. The change of the ablation diameter and depth depended on the laser fluence and the number of laser pulses. And higher laser fluence could enable a faster rate of laser-machining. &copy; The Nonferrous Metals Society of China and Springer-Verlag Berlin Heidelberg 2011.

Number of references:18

Main heading:Ultrashort pulses

Controlled terms:Ablation - Electromagnetic pulse - Machining - Superalloys - Ultrafast lasers

Uncontrolled terms:Ablation thresholds - Faster rates - Femto-second laser - Femtosecond laser machining - Femtosecond pulse - Laser fluences - Nanosecond lasers - Recast layer - Single crystal superalloys - Single-crystal superalloy  - Threshold

Classification code:531 Metallurgy and Metallography - 604.2 Machining Operations - 641.2 Heat Transfer - 701 Electricity and Magnetism - 744.1 Lasers, General

DOI:10.1007/s12598-011-0362-z

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 21>

 

Accession number:20114514495716

Title:Nonparaxial propagation of vectorial hollow Gaussian beams diffracted at an annular aperture

Authors:Yang, Yuanjie (1); Li, Xiaofeng (1); Duan, Kailiang (2)

Author affiliation:(1) University of Electronic Science and Technology of China, Institute of Astronautics and Aeronautics, Chengdu 610054, China; (2) State Key Laboratory of Transient Optics and Photonics, Xian Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xian 710068, China

Corresponding author:Yang, Y.(dr.yang2003@yahoo.com.cn)

Source title:Optical Engineering

Abbreviated source title:Opt Eng

Volume:50

Issue:7

Issue date:July 2011

Publication year:2011

Article number:078001

Language:English

ISSN:00913286

E-ISSN:15602303

CODEN:OPEGAR

Document type:Journal article (JA)

Publisher:SPIE, P.O. Box 10, Bellingham, WA 98227-0010, United States

Abstract:Based on the vectorial Raleigh-Sommerfeld diffraction integral, an analytical propagation equation of vectorial nonparaxial hollow Gaussian beams (HGBs) through an annular aperture is derived. The corresponding closed-forms for a circular aperture, a circular black screen, and unapertured case are given as special cases of the general results. The typical numerical examples are given to illustrate our analytical results. It is shown that the f parameter plays an important role in determining the nonparaxiality of vectorial apertured HGBs. &copy; 2011 Society of Photo-Optical Instrumentation Engineers (SPIE).

Number of references:16

Main heading:Gaussian beams

Controlled terms:Diffraction - Gaussian distribution - Gaussian noise (electronic)

Uncontrolled terms:Analytical propagation equation - Analytical results - Annular apertures - Circular aperture - Diffraction integral - F parameter - Hollow Gaussian beam - Nonparaxial - Nonparaxial propagation - Numerical example

Classification code:711 Electromagnetic Waves - 711.1 Electromagnetic Waves in Different Media - 713 Electronic Circuits - 716 Telecommunication; Radar, Radio and Television - 922.1 Probability Theory

DOI:10.1117/1.3595864

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

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Accession number:20112614103564

Title:High energy dual-wavelength mid-infrared extracavity KTA optical parametric oscillator

Authors:Liu, Hongjun (1); Sun, Qibing (1); Huang, Nan (1); Zhu, Shaolan (1); Zhao, Wei (1)

Author affiliation:(1) Laboratory of Transient Optics and Photonics Technology, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China

Corresponding author:Liu, H.(liuhongjun@opt.ac.cn)

Source title:World Academy of Science, Engineering and Technology

Abbreviated source title:World Acad. Sci. Eng. Technol.

Volume:77

Issue date:May 2011

Publication year:2011

Pages:422-425

Language:English

ISSN:2010376X

E-ISSN:20103778

Document type:Journal article (JA)

Publisher:WASET - World Academy of Science, Engineering and Technology, Adem Yavuz Cd 6/A7, Bayrampasa, Istanbul, 34045, Turkey

Abstract:A high energy dual-wavelength extracavity KTA optical parametric oscillator (OPO) with excellent stability and beam quality, which is pumped by a Q-switched single-longitudinal-mode Nd:YAG laser, has been demonstrated based on a type II noncritical phase matching (NCPM) KTA crystal. The maximum pulse energy of 10.2 mJ with the output stability of better than 4.1% rms at 3.467 &mu;m is obtained at the repetition rate of 10 Hz and pulse width of 2 ns, and the 11.9 mJ of 1.535 &mu;m radiation is obtained simultaneously. This extracavity NCPM KTA OPO is very useful when high energy, high beam quality and smooth time domain are needed.

Number of references:10

Main heading:Optical parametric oscillators

Controlled terms:High energy physics - Infrared devices - Infrared lasers - Neodymium lasers - Pulse repetition rate - Pumping (laser)

Uncontrolled terms:Dual wavelength laser - Dual-wavelength - High beam quality - High energy - Midinfrared - Midinfrared lasers - ND : YAG lasers - Noncritical phase matching - OPO - Output stability  - Pulse energies - Pulse width - Q-switched - Repetition rate - Single longitudinal mode - Time domain - Type II

Classification code:741.3 Optical Devices and Systems - 744.1 Lasers, General - 744.4 Solid State Lasers - 932.1 High Energy Physics

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 23>

 

Accession number:20113814351369

Title:Predictive filter-based relative attitude and position determination for rendezvous and docking between spacecrafts

Authors:Yang, Shao-Dong (1); Wen, De-Sheng (1); Ma, Jun-Yong (1); Sun, Jing (1)

Author affiliation:(1) The Space Optical Technology Research Department, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710069, China; (2) Graduate University of Chinese Academy of Sciences, Beijing 100049, China

Corresponding author:Yang, S.-D.(sandon0326@opt.ac.cn)

Source title:Yuhang Xuebao/Journal of Astronautics

Abbreviated source title:Yuhang Xuebao

Volume:32

Issue:8

Issue date:August 2011

Publication year:2011

Pages:1688-1693

Language:Chinese

ISSN:10001328

CODEN:YUXUD6

Document type:Journal article (JA)

Publisher:China Spaceflight Society, 2 Yuetan Beixiaojie, Beijing, 100830, China

Abstract:A predictive filtering algorithm for real-time attitude and position determination with high accuracy and strong robustness is proposed in this paper. Based the line-of-sight measurement of Vision-based Navigation, a system errors model is established to predict the angular rate and linear rate one step and then the relative attitude and position between spacecrafts are accurately estimated. What is more, the predicted attitude and position are modified and updated by using Kalman gain and performance of algorithm is improved. Results of simulation based rendezvous and docking show that predictive filtering can accurately estimate the relative attitude and position, and the modified algorithm give a better result. The accuracy meets the requirement for rendezvous and docking. It has an important reference value for in-orbit experiment.

Number of references:8

Main heading:Spacecraft

Controlled terms:Algorithms - Docking - Manned space flight - Measurement errors - Unmanned vehicles

Uncontrolled terms:Angular rate - Attitude - Filter-based - In-orbit - Kalman gain - Line-of-sight - Linear rate - Model error - Modified algorithms - One step  - Performance of algorithm - Position - Position determination - Predictive filter - Predictive filtering - Real-time attitude - Reference values - Relative attitude - Rendezvous and docking - Simulation-based  - System errors - Vision based navigation

Classification code:922 Statistical Methods - 921 Mathematics - 723 Computer Software, Data Handling and Applications - 656.1 Space Flight - 655.1 Spacecraft, General - 652 Aircraft and Avionics - 472 Ocean Engineering

DOI:10.3873/j.issn.1000-1328.2011.08.006

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

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Accession number:20111813948956

Title:Fabrication of high thermal conductive Al-cBN ceramic sinters by high temperature high pressure method

Authors:Wang, P.F. (1); Li, Zh.H. (2); Zhu, Y.M. (2)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Procession Mechanics, Chinese Academy of Sciences (CAS), Xi'an, Shanxi 710119, China; (2) Key Laboratory of Advanced Ceramics and Machining Technology of Ministry of Education, School of Material Science and Engineering, Tianjin University, 92, Weijin road, Nankai district, Tianjin 300072, China

Corresponding author:Li, Zh. H.(tjumarkli@yahoo.cn)

Source title:Solid State Sciences

Abbreviated source title:Solid State Sci.

Volume:13

Issue:5

Issue date:May 2011

Publication year:2011

Pages:1041-1046

Language:English

ISSN:12932558

CODEN:SSSCFJ

Document type:Journal article (JA)

Publisher:Elsevier Masson SAS, 62 rue Camille Desmoulins, Issy les Moulineaux Cedex, 92442, France

Abstract:Al-cBN ceramic sinters were fabricated by sintering micro-powder mixture of Al and cBN under high temperature and high pressure condition. Differential scanning calorimetry (DSC), X-ray diffraction (XRD), scanning electronic microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDS) elemental mapping analyses and laser flashing thermal conductivity measurements were performed to investigate the sintering properties and thermal conductivity of the Al-cBN ceramic sinters. XRD analysis revealed these Al-cBN ceramic sinters were composed of a large portion of cBN and of a small portion of AlN, and very little amount of AlB<inf>12</inf> and hBN. Formation of boundary phase resulted in the rapid densification of the sinters, as well as the increase of their relative density with increasing Al additions. The Al-cBN ceramic sinters have a maximum thermal conductivity of about 1.94 W/cm K at room temperature and a much higher value of about 2.04 W/cm K at 200 &deg;C. Their high thermal conductivity over that of AlN-hBN composites promise Al-cBN ceramic sinters favorite candidates as high efficiency heat sink materials for wide band gap semiconductors. &copy; 2011 Elsevier Masson SAS. All rights reserved.

Number of references:36

Main heading:Thermal conductivity

Controlled terms:Aluminum - Boron - Ceramic materials - Cubic boron nitride - Differential scanning calorimetry - Energy dispersive spectroscopy - Heat sinks - High pressure engineering - Sintering - X ray diffraction  - X ray diffraction analysis - X ray spectroscopy

Uncontrolled terms:AlN - Boundary phase - Elemental mapping analysis - Energy dispersive x-ray spectroscopy - Heat sink materials - High efficiency - High temperature and high pressure - High temperature high pressure - High temperature high pressure sintering - High thermal  - High thermal conductivity - Powder mixtures - Rapid densification - Relative density - Room temperature - Scanning electronic microscopy - SEM - Sintering properties - Thermal conductivity measurements - Wide-band-gap semiconductor  - XRD analysis

Classification code:931.3 Atomic and Molecular Physics - 901 Engineering Profession - 812.2 Refractories - 812.1 Ceramics - 801 Chemistry - 714.2 Semiconductor Devices and Integrated Circuits - 641.2 Heat Transfer - 549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals - 541.1 Aluminum

DOI:10.1016/j.solidstatesciences.2011.01.023

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 25>

 

Accession number:20112214012679

Title:Mammographic mass segmentation: Embedding multiple features in vector-valued level set in ambiguous regions

Authors:Wang, Ying (1); Tao, Dacheng (2); Gao, Xinbo (1); Li, Xuelong (3); Wang, Bin (1)

Author affiliation:(1) School of Electronic Engineering, Xidian University, Xi'an, China; (2) School of Computer Engineering, Nanyang Technological University, Singapore, Singapore; (3) Center for OPTical IMagery Analysis and Learning (OPTIMAL), Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, Shaanxi, China; (4) Centre for Quantum Computation and Intelligent Systems, Faculty of Engineering and Information Technology, University of Technology, Sydney, Australia

Corresponding author:Tao, D.(dacheng.tao@uts.edu.au)

Source title:Pattern Recognition

Abbreviated source title:Pattern Recogn.

Volume:44

Issue:9

Issue date:September 2011

Publication year:2011

Pages:1903-1915

Language:English

ISSN:00313203

CODEN:PTNRA8

Document type:Conference article (CA)

Publisher:Elsevier Ltd, Langford Lane, Kidlington, Oxford, OX5 1GB, United Kingdom

Abstract:Mammographic mass segmentation plays an important role in computer-aided diagnosis systems. It is very challenging because masses are always of low contrast with ambiguous margins, connected with the normal tissues, and of various scales and complex shapes. To effectively detect true boundaries of mass regions, we propose a feature embedded vector-valued contour-based level set method with relaxed shape constraint. In particular, we initially use the contour-based level set method to obtain the initial boundaries on the smoothed mammogram as the shape constraint. To prevent the contour leaking and meanwhile preserve the radiative characteristics of specific malignant masses, afterward, we relax the obtained shape constraint by analyzing possible valid regions around the initial boundaries. The relaxed shape constraint is then used to design a novel stopping function for subsequent vector-valued level set method. Since texture maps, gradient maps, and the original intensity map can reflect different characteristics of the mammogram, we integrate them together to obtain more accurate segmentation by incorporating the new stopping function into the newly proposed feature embedded vector-valued contour-based level set method. The experimental results suggest that the proposed feature embedded vector-valued contour-based level set method with relaxed shape constraint can effectively find ambiguous margins of the mass regions. Comparing against existing active contours methods, the new scheme is more effective and robust in detecting complex masses. &copy; 2010 Elsevier Ltd. All rights reserved.

Number of references:43

Main heading:Numerical methods

Controlled terms:Computer aided diagnosis - Drop breakup - Level measurement - Mammography - Tissue - Vectors - X ray screens

Uncontrolled terms:Computer-aided diagnose - Mammograms - Mass segmentation - Relaxed shape constraint - Vector valued

Classification code:931.2 Physical Properties of Gases, Liquids and Solids - 921.6 Numerical Methods - 921.1 Algebra - 943.2 Mechanical Variables Measurements - 746 Imaging Techniques - 461.1 Biomedical Engineering - 422.1 Strength of Building Materials : Test Equipment - 461.2 Biological Materials and Tissue Engineering

DOI:10.1016/j.patcog.2010.08.002

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

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Accession number:20122715188506

Title:Local adaptive dictionary based image denoising

Authors:Tang, Yi (1); Yuan, Yuan (1); Yan, Pingkun (1); Li, Xuelong (1); Zhou, Hui (2); Li, Luoqing (2)

Author affiliation:(1) Center for OPTical IMagery Analysis and Learning (OPTIMAL), Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, Shaanxi, China; (2) Faculty of Mathematics and Computer Science, Hubei University, Wuhan, Hubei, China

Corresponding author:Tang, Y.

Source title:1st Asian Conference on Pattern Recognition, ACPR 2011

Abbreviated source title:Asian Conf. Pattern Recogn., ACPR

Monograph title:1st Asian Conference on Pattern Recognition, ACPR 2011

Issue date:2011

Publication year:2011

Pages:412-416

Article number:6166564

Language:English

ISBN-13:9781457701221

Document type:Conference article (CA)

Conference name:1st Asian Conference on Pattern Recognition, ACPR 2011

Conference date:November 28, 2011 - November 28, 2011

Conference location:Beijing, China

Conference code:90727

Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States

Abstract:In this paper, the problem of balancing the noise removing and the image details preserving is considered. To remove noise adaptively, local dictionaries and sparse coding techniques are used. For a noised image patch, the local dictionary corresponding to it and the sparse coding technique are used to generate the sparse coding vector of the given patch. Then the noise of the given patch can be removed without any information on noise level by setting all components be zero but preserving largest component of the sparse coding vector. Because too much information on image details are removed with noise by the above process, a local weighted regression is adopted to refine the denoising image with the help of the information on the local geometry structure of noised image. Various experiments have been accomplished and prove our method to be effective in balancing the noise removing and the image details preserving. &copy; 2011 IEEE.

Number of references:23

Main heading:Image coding

Controlled terms:Image denoising - Pattern recognition

Uncontrolled terms:adaptive - De-noising - Image de-nosing - Image patches - Local geometry - Local weighted regression - Local-adaptive - Noise levels - Noise removing - REmove noise  - Sparse coding

Classification code:716 Telecommunication; Radar, Radio and Television - 716.1 Information Theory and Signal Processing - 741 Light, Optics and Optical Devices

DOI:10.1109/ACPR.2011.6166564

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

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Accession number:20114514492374

Title:Wideband slow light with ultralow dispersion in a W1 photonic crystal waveguide

Authors:Liang, Jian (1); Ren, Li-Yong (1); Yun, Mao-Jin (2); Wang, Xing-Jun (3)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (2) College of Physics Science, Qingdao University, Qingdao 266071, China; (3) State Key Laboratory on Advanced Optical Communication Systems and Networks, Peking University, Beijing 100871, China

Corresponding author:Ren, L.-Y.(renliy@opt.ac.cn)

Source title:Applied Optics

Abbreviated source title:Appl. Opt.

Volume:50

Issue:31

Issue date:November 1, 2011

Publication year:2011

Pages:G98-G103

Language:English

ISSN:1559128X

E-ISSN:15394522

CODEN:APOPAI

Document type:Journal article (JA)

Publisher:Optical Society of America, 2010 Massachusetts Ave, NW, Washington, DC, DC 20036-1023, United States

Abstract:A dispersion tailoring scheme for obtaining slow light in a silicon-on-insulator W1-type photonic crystal waveguide, novel to our knowledge, is proposed in this paper. It is shown that, by simply shifting the first two rows of air holes adjacent to the waveguide to specific directions, slow light with large groupindex, wideband, and low group-velocity dispersion can be realized. Defining a criterion of restricting the group-index variation within a &plusmn;0.8% range as a flattened region, we obtain the ultraflat slow light with bandwidths over 5.0, 4.0, 2.5, and 1.0 nm when keeping the group index at 38.0, 48.8, 65.2, and 100.4, respectively. Numerical simulations are performed utilizing the three-dimensional (3D) plane-wave expansion method and the 3D finite-difference time-domain method. &copy; 2011 Optical Society of America.

Number of references:27

Main heading:Slow light

Controlled terms:Dispersion (waves) - Finite difference time domain method - Numerical methods - Optical waveguides - Photonic crystals - Three dimensional - Time domain analysis - Waveguides

Uncontrolled terms:Air holes - Group index - Photonic crystal waveguide - Plane wave expansion method - Silicon on insulator - Three-dimensional (3D) - UltraFlat - Wide-band

Classification code:921.6 Numerical Methods - 921 Mathematics - 902.1 Engineering Graphics - 741.3 Optical Devices and Systems - 741.1 Light/Optics - 714.3 Waveguides - 711.1 Electromagnetic Waves in Different Media

DOI:10.1364/AO.50.000G98

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

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Accession number:20111213849924

Title:A relay level set method for automatic image segmentation

Authors:Gao, Xinbo (1); Wang, Bin (1); Tao, Dacheng (2); Li, Xuelong (3)

Author affiliation:(1) School of Electronic Engineering, Xidian University, Xi'an 710071, China; (2) Centre for Quantum Computation and Intelligent Systems, Faculty of Engineering and Information Technology, University of Technology, Sydney, NSW 2007, Australia; (3) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, Shaanxi, China

Corresponding author:Gao, X.(xbgao@mail.xidian.edu.cn)

Source title:IEEE Transactions on Systems, Man, and Cybernetics, Part B: Cybernetics

Abbreviated source title:IEEE Trans Syst Man Cybern Part B Cybern

Volume:41

Issue:2

Issue date:April 2011

Publication year:2011

Pages:518-525

Article number:5582310

Language:English

ISSN:10834419

CODEN:ITSCFI

Document type:Journal article (JA)

Publisher:Institute of Electrical and Electronics Engineers Inc., 445 Hoes Lane / P.O. Box 1331, Piscataway, NJ 08855-1331, United States

Abstract:This paper presents a new image segmentation method that applies an edge-based level set method in a relay fashion. The proposed method segments an image in a series of nested subregions that are automatically created by shrinking the stabilized curves in their previous subregions. The final result is obtained by combining all boundaries detected in these subregions. The proposed method has the following three advantages: 1) It can be automatically executed without humancomputer interactions; 2) it applies the edge-based level set method with relay fashion to detect all boundaries; and 3) it automatically obtains a full segmentation without specifying the number of relays in advance. The comparison experiments illustrate that the proposed method performs better than the representative level set methods, and it can obtain similar or better results compared with other popular segmentation algorithms. &copy; 2006 IEEE.

Number of references:38

Main heading:Image segmentation

Controlled terms:Drop breakup - Evolutionary algorithms - Level measurement - Numerical methods - Optimization - Partial differential equations

Uncontrolled terms:Automatic image segmentation - Edge-based - Energy minimization - Finite difference - geometric active contour - Human-computer - Level Set method - relay level set - Segmentation algorithms - Segmentation methods

Classification code:723 Computer Software, Data Handling and Applications - 723.2 Data Processing and Image Processing - 921 Mathematics - 931.2 Physical Properties of Gases, Liquids and Solids - 943.2 Mechanical Variables Measurements

DOI:10.1109/TSMCB.2010.2065800

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

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Accession number:20113614296279

Title:Three mirror anastigmatic zoom system using deformable mirrors

Authors:Zhao, Xin (1); Xie, Yong-Jun (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China

Corresponding author:Xie, Y.-J.(jyxie@opt.ac.cn)

Source title:Proceedings of SPIE - The International Society for Optical Engineering

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:8196

Monograph title:International Symposium on Photoelectronic Detection and Imaging 2011: Space Exploration Technologies and Applications

Issue date:2011

Publication year:2011

Article number:81961F

Language:English

ISSN:0277786X

CODEN:PSISDG

ISBN-13:9780819488374

Document type:Conference article (CA)

Conference name:International Symposium on Photoelectronic Detection and Imaging 2011: Space Exploration Technologies and Applications

Conference date:May 24, 2011 - May 26, 2011

Conference location:Beijing, China

Conference code:86296

Sponsor:Chinese Society of Astronautics (CAS)

Publisher:SPIE, P.O. Box 10, Bellingham, WA 98227-0010, United States

Abstract:In order to optically vary the effect focal length of optical zoom system, adds two or more active optics which could supply variable the focal length, and create an imaging system with variable optical magnification that has no macroscopic moving parts. Based on this design concept, and connected with off-axis three-mirror reflective optical system design, we have presented preliminary modeling showing that active optical elements can be used as to create a zoom system that the effective focal length from 1000 mm to 3000 mm in ZEMAX, the FOV(Field of view) is 16&deg;&times;2&deg; -6.87&deg;&times;0. 86&deg;, and the F/# is 5-15, the whole system is composed of 3 reflective mirrors(DM, Deformable Mirrors). In order to zoom system, the F/# and three reflective mirror's radius, were variable. The MTF more than 0.45 at the spatial frequency of 42lp/mm and approaches the diffraction limit, the maximum RMS spot diameter less than detector's size. The results show that the imaging quality can satisfy the requirement of the system. &copy; 2011 SPIE.

Number of references:12

Main heading:Mirrors

Controlled terms:Deformation - Detectors - Focusing - Optical design - Optical systems - Space research - Systems analysis

Uncontrolled terms:Active Optics - Deformable mirrors - Design concept - Diffraction limits - Effective focal lengths - Field of views - Focal lengths - Imaging quality - Moving parts - Off-axis  - Optical zoom systems - Preliminary modeling - Reflective mirrors - Reflective optical system - Spatial frequency - Spot diameter - Three mirrors - Whole systems - Zoom systems

Classification code:961 Systems Science - 914 Safety Engineering - 741.3 Optical Devices and Systems - 741.1 Light/Optics - 656.2 Space Research - 422 Strength of Building Materials; Test Equipment and Methods - 421 Strength of Building Materials; Mechanical Properties

DOI:10.1117/12.900730

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

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Accession number:20113414264436

Title:Image quality assessment based on S-CIELAB model

Authors:He, Lihuo (1); Gao, Xinbo (1); Lu, Wen (1); Li, Xuelong (2); Tao, Dacheng (3)

Author affiliation:(1) School of Electronic Engineering, Xidian University, 710071 Xi'an, China; (2) Center for OPTical IMagery Analysis and Learning (OPTIMAL), State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, 71011 Xi'an, China; (3) School of Computer Engineering, Nanyang Technological University, 50 Nanyang Avenue, Blk N4, Singapore 639798, Singapore

Corresponding author:Gao, X.(xbgao.xidian@gmail.com)

Source title:Signal, Image and Video Processing

Abbreviated source title:Signal Image Video Process.

Volume:5

Issue:3

Issue date:September 2011

Publication year:2011

Pages:283-290

Language:English

ISSN:18631703

E-ISSN:18631711

Document type:Journal article (JA)

Publisher:Springer London, The Guildway, Old Portsmouth Road, Artington, Guildford, GU3 1LP, United Kingdom

Abstract:This paper proposes a new image quality assessment framework which is based on color perceptual model. By analyzing the shortages of the existing image quality assessment methods and combining the color perceptual model, the general framework of color image quality assessment based on the S-CIELAB color space is presented. The S-CIELAB color model, a spatial extension of CIELAB, has an excellent performance for mimicking the perceptual processing of human color vision. This paper incorporates excellent color perceptual characteristics model with the geometrical distortion measurement to assess the image quality. First, the reference and distorted images are transformed into S-CIELAB color perceptual space, and the transformed images are evaluated by existing metric in three color perceptual channels. The fidelity factors of three channels are weighted to obtain the image quality. Experimental results achieved on LIVE database II shows that the proposed methods are in good consistency with human subjective assessment results. &copy; 2011 Springer-Verlag London Limited.

Number of references:19

Main heading:Image quality

Controlled terms:Color - Color image processing - Color vision - Rating

Uncontrolled terms:Color image quality - Color models - Color space - Distorted images - Excellent performance - Geometrical distortion - Human color vision - Image quality assessment - Perceptual channels - Perceptual characteristics  - Perceptual model - Perceptual processing - S-CIELAB - Spatial extension - Subjective assessments - Three channel

Classification code:741 Light, Optics and Optical Devices - 902.2 Codes and Standards

DOI:10.1007/s11760-010-0200-x

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

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Accession number:20114114413595

Title:InAs/GaSb superlattices grown by LP-MOCVD for &sim;10 &mu;m wavelength infrared range

Authors:Chang, Yuchun (1); Wang, Tao (2); Yin, Fei (2); Wang, Jingwei (2); Song, Zhenyu (1); Wang, Yiding (1); Yin, Jingzhi (1)

Author affiliation:(1) State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun, China; (2) Xi'An Institute of Optics and Precision Mechanism, Chinese Academy of Sciences, Xi'an, China

Corresponding author:Yin, J.(yjz886666@yahoo.com.cn)

Source title:Infrared Physics and Technology

Abbreviated source title:Infrared Phys Technol

Volume:54

Issue:6

Issue date:November 2011

Publication year:2011

Pages:478-481

Language:English

ISSN:13504495

CODEN:IPTEEY

Document type:Journal article (JA)

Publisher:Elsevier, P.O. Box 211, Amsterdam, 1000 AE, Netherlands

Abstract:A type-II InAs/GaSb superlattice (SL) was grown on Te-doped (1 0 0) GaSb substrate by low pressure metal organic chemical vapor deposition (LP-MOCVD). The samples were obtained at different growth temperatures and with different interface layers. By introducing an InAsSb interface layer between InAs and GaSb, a good surface morphology of the superlattice was achieved when the sample growth temperature was around 500-520 &deg;C. The photoluminescence (PL) peak wavelength of the sample was 10.7 &mu;m at 77 K, with FWHM of &sim;30 meV. &copy; 2011 Elsevier B.V. All rights reserved.

Number of references:25

Main heading:Indium antimonides

Controlled terms:Gallium alloys - Growth temperature - Indium arsenide - Metallorganic chemical vapor deposition - MOS devices - Organic chemicals - Organometallics - Superlattices

Uncontrolled terms:InAs - InAs/GaSb superlattices - InAsSb interface layer - Infrared range - Interface layer - Low-pressure metal-organic chemical vapor depositions - LP-MOCVD - Peak wavelength

Classification code:531 Metallurgy and Metallography - 549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals - 714.2 Semiconductor Devices and Integrated Circuits - 802.2 Chemical Reactions - 804 Chemical Products Generally

DOI:10.1016/j.infrared.2011.07.009

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

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Accession number:20114114414394

Title:Vehicle detection and motion analysis in low-altitude airborne video under urban environment

Authors:Cao, Xianbin (1); Wu, Changxia (2); Lan, Jinhe (2); Yan, Pingkun (3); Li, Xuelong (3)

Author affiliation:(1) School of Electronic and Information Engineering, Beihang University, Beijing 100083, China; (2) University of Science and Technology of China, Hefei 230026, China; (3) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China

Corresponding author:Cao, X.(xbcao@buaa.edu.cn)

Source title:IEEE Transactions on Circuits and Systems for Video Technology

Abbreviated source title:IEEE Trans Circuits Syst Video Technol

Volume:21

Issue:10

Monograph title:SPECIAL ISSUE ON VIDEO ANALYSIS ON RESOURCE-LIMITED SYSTEMS

Issue date:October 2011

Publication year:2011

Pages:1522-1533

Article number:5955106

Language:English

ISSN:10518215

CODEN:ITCTEM

Document type:Journal article (JA)

Publisher:Institute of Electrical and Electronics Engineers Inc., 445 Hoes Lane / P.O. Box 1331, Piscataway, NJ 08855-1331, United States

Abstract:Visual surveillance from low-altitude airborne platforms plays a key role in urban traffic surveillance. Moving vehicle detection and motion analysis are very important for such a system. However, illumination variance, scene complexity, and platform motion make the tasks very challenging. In addition, the used algorithms have to be computationally efficient in order to be used on a real-time platform. To deal with these problems, a new framework for vehicle detection and motion analysis from low-altitude airborne videos is proposed. Our paper has two major contributions. First, to speed up feature extraction and to retain additional global features in different scales for higher classification accuracy, a boosting light and pyramid sampling histogram of oriented gradients feature extraction method is proposed. Second, to efficiently correlate vehicles across different frames for vehicle motion trajectories computation, a spatio-temporal appearance-related similarity measure is proposed. Compared to other representative existing methods, our experimental results showed that the proposed method is able to achieve better performance with higher detection rate, lower false positive rate, and faster detection speed. &copy; 2011 IEEE.

Number of references:38

Main heading:Aircraft detection

Controlled terms:Feature extraction - Security systems - Urban planning - Vehicles

Uncontrolled terms:Airborne platforms - Airborne video - Classification accuracy - Computationally efficient - Detection rates - Different scale - False positive rates - Feature extraction methods - Global feature - Low-altitude  - Motion analysis - Moving vehicles - Platform motion - Real-time platform - Scene complexity - Similarity measure - Spatio-temporal - Urban environments - Urban traffic surveillance - Vehicle detection  - Vehicle motion - Visual surveillance

Classification code:403.1 Urban Planning and Development - 432 Highway Transportation - 716 Telecommunication; Radar, Radio and Television - 716.2 Radar Systems and Equipment - 914.1 Accidents and Accident Prevention

DOI:10.1109/TCSVT.2011.2162274

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

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Accession number:20112314043575

Title:Detection and fitting of pulse profile for x-ray pulsar navigation system

Authors:Chen, Baomei (1); Zhao, Baosheng (1); Hu, Huijun (1); Sheng, Lizhi (1); Yan, Qiurong (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, Shaanxi 710119, China; (2) Graduate University of Chinese Academy of Sciences, Beijing 100049, China

Corresponding author:Chen, B.(04cbm@live.cn)

Source title:Guangxue Xuebao/Acta Optica Sinica

Abbreviated source title:Guangxue Xuebao

Volume:31

Issue:5

Issue date:May 2011

Publication year:2011

Article number:0534002

Language:Chinese

ISSN:02532239

CODEN:GUXUDC

Document type:Journal article (JA)

Publisher:Chinese Optical Society, P.O. Box 80, Xi'an, 710068, China

Abstract:Several new methods to improve the time accuracy and resolution based on the original X pulsar navigation ground simulation system are proposed. By these proposed methods, the accuracy and real-time performance of the spacecraft navigation has been enhanced. The methods adopted include: 1) enhancing the performance of the photon counting detector based on micro-channel plate (MCP); 2) using time measurement system with high accuracy. The pulse profile of the original detection system is compared with the pulse profile of the improved detection system, and the gain of MCP which has influence on the detected pulse profile is discussed. The experimental results show that the counting rate of improved detection system becomes higher under the same experimental condition. When the operating voltage of MCP is-800 V in the improved detection system, and the value of Bin is 1.5 ms, a pulse profile with good signal-to-noise ratio (SNR) can be acquired after being integrated for 200 s.

Number of references:14

Main heading:Detectors

Controlled terms:Electromagnetic wave emission - Image storage tubes - Navigation - Navigation systems - Photons - Signal to noise ratio

Uncontrolled terms:Counting rates - Detection system - Experimental conditions - Measurement system - Micro channel plate - Operating voltage - Photon counting detector - Photon counting detectors - Pulse profile - Pulse profile fitting  - Pulse's time of arrival measurement - Real time performance - Signal to noise - Simulation systems - Spacecraft navigation - X-ray pulsar navigation - X-ray pulsars

Classification code:914 Safety Engineering - 741.1 Light/Optics - 716.3 Radio Systems and Equipment - 716.1 Information Theory and Signal Processing - 714.1 Electron Tubes - 711 Electromagnetic Waves - 434.4 Waterway Navigation

DOI:10.3788/AOS201131.0534002

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

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Accession number:20113614305247

Title:Tunable and robust reflection-free waveguides based on a gyromagnetic photonic crystal

Authors:Lu, H. (1); Liu, X.M. (1); Zhou, R. (1); Mao, D. (1); Gong, Y. (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China

Corresponding author:Liu, X.M.(liuxm@opt.ac.cn)

Source title:Journal of Electromagnetic Waves and Applications

Abbreviated source title:J Electromagn Waves Appl

Volume:25

Issue:11-12

Issue date:2011

Publication year:2011

Pages:1752-1761

Language:English

ISSN:09205071

E-ISSN:15693937

CODEN:JEWAE5

Document type:Journal article (JA)

Publisher:VSP BV, P.O.Box 9000, Leiden, 2300 PA, Netherlands

Abstract:We propose and numerically investigate a kind of tunable and robust reflection-free waveguides based on a gyromagnetic photonic crystal (PC). The time reversal symmetry breaking of the gyromagnetic PC under out-of-plane dc magnetic fields gives rise to one-way edge modes in both the second and third band gaps. It is found that the propagating properties of one-way modes in the waveguides can be easily controlled by adjusting the directions of external magnetic fields. Moreover, the one-way modes are robust against the disorder in the waveguides. &copy; Koninklijke Brill NV, Leiden, 2011.

Number of references:33

Main heading:Waveguides

Controlled terms:Magnetic fields - Photonic crystals

Uncontrolled terms:Band gaps - DC magnetic field - External magnetic field - Out-of-plane - Time reversal symmetries

Classification code:701.2 Magnetism: Basic Concepts and Phenomena - 714.3 Waveguides - 933.1 Crystalline Solids

DOI:10.1163/156939311797164882

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 35>

 

Accession number:20111413889859

Title:Coexistence of strong and weak pulses in a fiber laser with largely anomalous dispersion

Authors:Liu, Xueming (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China

Corresponding author:Liu, X.(liuxm@opt.ac.c)

Source title:Optics Express

Abbreviated source title:Opt. Express

Volume:19

Issue:7

Issue date:March 28, 2011

Publication year:2011

Pages:5874-5887

Language:English

E-ISSN:10944087

Document type:Journal article (JA)

Publisher:Optical Society of America, 2010 Massachusetts Ave, NW, Washington, DC, DC 20036-1023, United States

Abstract:The coexistence of weakly sech-shaped solitons and strongly dissipative solitons is experimentally observed in an ultra-large net-anomalous-dispersion mode-locked fiber laser for the first time to author's best knowledge. Both sech-shaped and dissipative solitons appear to be the asymmetrically combined pulse state with one pulse component much smaller than the other. The energy of dissipative solitons is over three orders of magnitude larger than that of sech-shaped solitons. Two different types of pulse-shaping mechanisms coexist in the laser: one is the dissipative processes and the other is the balance between anomalous dispersion and nonlinear Kerr effect. Numerical simulations and analysis confirm the experimental observations. &copy; 2011 Optical Society of America.

Number of references:41

Main heading:Mode-locked fiber lasers

Controlled terms:Dispersions - Fiber lasers - Kerr magnetooptical effect - Magnetic field effects - Solitons

Uncontrolled terms:Anomalous dispersion - Combined pulse - Dissipative process - Dissipative solitons - Experimental observation - Kerr effects - Numerical simulation - Pulse components - Pulse-shaping - Three orders of magnitude

Classification code:701.2 Magnetism: Basic Concepts and Phenomena - 744.1 Lasers, General - 744.4 Solid State Lasers - 931.3 Atomic and Molecular Physics - 951 Materials Science

DOI:10.1364/OE.19.005874

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 36>

 

Accession number:20112414050864

Title:Parallel two-step phase-shifting microscopic interferometry based on a cube beamsplitter

Authors:Gao, Peng (1); Yao, Baoli (1); Min, Junwei (1); Guo, Rongli (1); Zheng, Juanjuan (1); Ye, Tong (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (2) Graduate School, Chinese Academy of Sciences, Beijing 100039, China

Corresponding author:Yao, B.(yaobl@opt.ac.cn)

Source title:Optics Communications

Abbreviated source title:Opt Commun

Volume:284

Issue:18

Issue date:August 15, 2011

Publication year:2011

Pages:4136-4140

Language:English

ISSN:00304018

CODEN:OPCOB8

Document type:Journal article (JA)

Publisher:Elsevier, P.O. Box 211, Amsterdam, 1000 AE, Netherlands

Abstract:Parallel two-step phase-shifting interferometry for microscopy is presented, and the recording condition for generalized two-step phase-shifting interferometry is discussed. A 45&deg; tilted cube beamsplitter enables to replicate the orthogonally linear polarized object and reference waves into two parallel beams, respectively. As a consequence, two interferograms with quadrature phase shift are obtained along the two beams, and phase reconstructed with an improved algorithm. To reconstruct the phase distribution from the two-step phase-shifting interferograms, a certain recording condition should be satisfied. However, the recording condition has not ever been discussed before. In this paper, the recording condition for the two-step phase-shifting interferometry is derived and that is: the intensity of reference wave should be no less than two times object wave intensity. &copy; 2011 Elsevier B.V. All rights reserved.

Number of references:30

Main heading:Holographic interferometry

Controlled terms:Computer generated holography

Uncontrolled terms:Digital holography microscopies - Improved algorithm - Interferograms - Object waves - Parallel beams - Phase distribution - Phase shifting Interferometry - Phase-shifting - Quadrature phase shifts - Reference waves  - Two beams

Classification code:723.5 Computer Applications - 941.4 Optical Variables Measurements

DOI:10.1016/j.optcom.2011.04.049

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

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Accession number:20113314234894

Title:Design proposal of a Fourier telescopy transmitter for moving objects in low earth orbit

Authors:Luo, Xiu-Juan (1); Ma, Cai-Wen (1); Zhang, Yu (1); Si, Qing-Dan (1)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Acad. of Sci., Xi'an 710119, China

Corresponding author:Luo, X.-J.(xj_luo@opt.ac.cn)

Source title:Shenzhen Daxue Xuebao (Ligong Ban)/Journal of Shenzhen University Science and Engineering

Abbreviated source title:Shenzhen Daxue Xuebao (Ligong Ban)

Volume:28

Issue:4

Issue date:July 2011

Publication year:2011

Pages:325-329

Language:Chinese

ISSN:10002618

CODEN:SDXLEX

Document type:Journal article (JA)

Publisher:Editorial Office of Journal of Shenzhen University, Shenzhen University, Shenzhen, 518060, China

Abstract:For the purpose of using high-resolution to detect and identify low earth orbit (LEO) moving space objects, a proposal of the Fourier telescopy transmitter array disposition was presented, and a single transmitter was designed. The proposed transmitter system integrated the atmospheric aberration measurement system, the feedback control system, and the target tracking system. It used atmospheric turbulence wave-front correction and correlative tracking techniques to achieve accurate tracking of fast moving objects, simultaneously emitted multiple interference laser beams sweeping across the target to improve imaging speed, and carried out computer simulation on interference between laser beam pairs and laser propagation along slant paths through turbulence atmosphere. Theoretical analysis and simulation results show that the design from the proposal is reasonably feasible and meets the goal of the rapid LEO objects imaging on Fourier telescopy transmitter design.

Number of references:12

Main heading:Target tracking

Controlled terms:Adaptive control systems - Atmospheric thermodynamics - Atmospheric turbulence - Communication satellites - Computer simulation - Design - Earth (planet) - Feedback control - Fourier transforms - Laser beams  - Navigation - Optical telescopes - Orbits - Space research - Transmitters

Uncontrolled terms:Active imaging - Fourier telescopy - High spatial resolution - Long-baseline interferometry - Low earth orbit satellites - Moving target tracking - Space explorations

Classification code:744.8 Laser Beam Interactions - 741.3 Optical Devices and Systems - 731.1 Control Systems - 723.5 Computer Applications - 716 Telecommunication; Radar, Radio and Television - 921.3 Mathematical Transformations - 657 Space Physics - 656.1 Space Flight - 655.2 Satellites - 443.1 Atmospheric Properties - 408 Structural Design - 656.2 Space Research

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 38>

 

Accession number:20114114413597

Title:Theoretical study of all-optical RZ to NRZ format conversion based on cascaded nanoporous silicon waveguides

Authors:Wu, Jian-Wei (1)

Author affiliation:(1) Chongqing Key Laboratory of Optical Engineering, Chongqing Normal University, Chongqing 400047, China; (2) College of Physics and Electronic Engineering, Chongqing Normal University, Chongqing 400047, China; (3) State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing 100876, China; (4) State Key Laboratory of Transient Optics and Photonics, Chinese Academy of Sciences, Xi'an 710119, China

Corresponding author:Wu, J.-W.(jwwu05@gmail.com)

Source title:Infrared Physics and Technology

Abbreviated source title:Infrared Phys Technol

Volume:54

Issue:6

Issue date:November 2011

Publication year:2011

Pages:465-468

Language:English

ISSN:13504495

CODEN:IPTEEY

Document type:Journal article (JA)

Publisher:Elsevier, P.O. Box 211, Amsterdam, 1000 AE, Netherlands

Abstract:In this paper, we present that the strong free carrier absorption and short carrier lifetime in nanoporous silicon waveguide can perform effectively the return-to-zero (RZ) to non-return-to zero (NRZ) format conversion. The project presented consisting of two cascaded millimeters long nanoporous silicon waveguides is numerically simulated and investigated at 5 Gbit/s. Numerical results clearly show that the outcome converted signal (NRZ) at the end of proposed device can be effectively optimized (e.g. clearer extinction ratio - ER, higher Q-factor, and lower bit-error rate - BER) by means of suitably choosing the system parameters such as initial RZ peak level and nanoporous silicon waveguide length. &copy; 2011 Elsevier B.V. All rights reserved.

Number of references:19

Main heading:Waveguides

Controlled terms:Bit error rate - Carrier lifetime - Integrated optics - Nonlinear optics - Optical frequency conversion

Uncontrolled terms:All-optical - Extinction ratios - Format conversion - Free carrier absorption - Nano-porous silicon - Non-return-to zero - Numerical results - Q-factors - Return-to-zero - Theoretical study  - Ultrafast process

Classification code:714.2 Semiconductor Devices and Integrated Circuits - 714.3 Waveguides - 723.1 Computer Programming - 741.1.1 Nonlinear Optics - 741.3 Optical Devices and Systems

DOI:10.1016/j.infrared.2011.07.011

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 39>

 

Accession number:20140817360214

Title:Enhanced low-index field confinement by radially stratified micro optical fibers

Authors:Zhang, Wenfu (1); Mu, Jian-Wei (3); Huang, Wei-Ping (3); Zhao, Wei (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (2) Graduate School of the Chinese Academy of Sciences, Beijing 100049, China; (3) Department of Electrical and Computer Engineering, McMaster University, Hamilton, ON L8S 4K1, Canada

Corresponding author:Zhang, W.(wfu.zhang@gmail.com)

Source title:Optics InfoBase Conference Papers

Abbreviated source title:Opt.InfoBase Conf. Papers

Monograph title:Specialty Optical Fibers, SOF 2011

Issue date:2011

Publication year:2011

Language:English

E-ISSN:21622701

ISBN-13:9781557529138

Document type:Conference article (CA)

Conference name:Specialty Optical Fibers, SOF 2011

Conference date:June 12, 2011  -  June 15, 2011

Conference location:Toronto, Canada

Conference code:104079

Publisher:Optical Society of America, 2010 Massachusetts Ave, NW, Washington, DC, DC 20036-1023, United States

Abstract:The ring micro-fiber is studied. The calculating results show that light can be concentrated in nanometer-thin low-index ring regions with very high confinement efficiency. &copy; OSA/ANIC/IPR/Sensors/SL/SOF/SPPCom/2011.

Number of references:4

Main heading:Optical fibers

Uncontrolled terms:High confinement - Micro-fiber

Classification code:741.1.2 Fiber Optics

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 40>

 

Accession number:20114414481658

Title:Measurement of focal spot centroid based on image processing

Authors:Xia, Ai-Li (1); Ma, Cai-Wen (1)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China

Corresponding author:Xia, A.-L.(xia_aili@163.com)

Source title:Guangdianzi Jiguang/Journal of Optoelectronics Laser

Abbreviated source title:Guangdianzi Jiguang

Volume:22

Issue:10

Issue date:October 2011

Publication year:2011

Pages:1542-1545

Language:Chinese

ISSN:10050086

CODEN:GUJIE9

Document type:Journal article (JA)

Publisher:Board of Optronics Lasers, No. 47 Yang-Liu-Qing Ying-Jian Road, Tian-Jin City, 300380, China

Abstract:A new method for enhancing the detection accuracy of the centroid of focal spot is put forward based on the image procesing techniques. After the Hartmann-Shark (H-S) wavefront sensor gets a series of focal spot array images, the subaperture detection windows are optimized by the adaptive threshold method for the optimum matching between the detection windows and the corresponding focal spots distribution areas and then the linear interpolation is used in the detection windows for higher precision image which is more similar to the original image. Furthermore, the image noise in the detection window is smoothed, so the detection accuracy of the sensor is improved. The experimental results demonstrate that the precision, repeatability and stability of focal spot centroid measurement by the proposed method are better than the results obtained via the traditional centroid methods.

Number of references:15

Main heading:Focusing

Controlled terms:Image processing - Imaging systems - Interpolation - Numerical control systems - Optical data processing - Sensors - Wavefronts

Uncontrolled terms:Adaptive thresholds - Focal spot - Hartmann-Shark (H-S)wavefront sensor - Image processing technique - Linear Interpolation

Classification code:921.6 Numerical Methods - 801 Chemistry - 746 Imaging Techniques - 741 Light, Optics and Optical Devices - 731.1 Control Systems - 711.1 Electromagnetic Waves in Different Media - 711 Electromagnetic Waves

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 41>

 

Accession number:20120314688090

Title:Electrical pulse generation technology for laser pulse shaping

Authors:Gou, Yongsheng (1); Liu, Baiyu (1); Zhang, Wei (1); Bai, Yonglin (1); Bai, Xiaohong (1); Yang, Wenzheng (1); Qin, Junjun (1); Wang, Bo (1)

Author affiliation:(1) Key Laboratory of Ultrafast Diagnostics of Chinese Academy of Sciences, Xi'an Institute of Optics and Precision Mechanics, CAS, Xi'an 710119, China; (2) Graduate University of the Chinese Academy of Sciences, Beijing 100049, China

Corresponding author:Gou, Y.(yshgou@163.com)

Source title:Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering

Abbreviated source title:Hongwai yu Jiguang Gongcheng Infrared Laser Eng.

Volume:40

Issue:11

Issue date:November 2011

Publication year:2011

Pages:2191-2194

Language:Chinese

ISSN:10072276

Document type:Journal article (JA)

Publisher:Chinese Society of Astronautics, P.O. Box 225-32, Tianjin, 300192, China

Abstract:A new circuit to generate ultra-wide-band pulse for laser pulse shaping used in "Shen Guang III" device was presented in this paper. This circuit was based on the characteristics of the step recovery diode (SRD) that the quantity of the carriers in the middle layer was controllable, the SRD had little parasitical capacitor and it would cut off rapidly. The pulse generation circuit was designed by combining the SRD in series and parallel. The ultra-wide-band pulse was tested specifically and test results of the practical circuit were given and analyzed in physical level. They were tallied with the theoretical results. This pulse generation circuit could output a pulse with amplitude about 10 V and pulse width about 150 ps. The trigger jitter of the pulse was less than 3 ps, amplitude stability was better than 3%. Thus, this circuit can meet the requirement of the pulse shaping.

Number of references:10

Main heading:Pulse generators

Controlled terms:Laser pulses - Pulse shaping circuits - Ultra-wideband (UWB)

Uncontrolled terms:Amplitude stability - Cut-off - Electrical pulse generation - Middle layer - Parasitical capacitors - Physical level - Pico-second pulse - Pulse generation - Pulse width - Pulse-shaping  - Step recovery diode (SRD) - Step recovery diodes - Theoretical result

Classification code:713.4 Pulse Circuits - 716.3 Radio Systems and Equipment - 744.1 Lasers, General

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 42>

 

Accession number:20114614525175

Title:Correction of CCD noise in light field distribution measurement

Authors:Liu, Lili (1); Da, Zhengshang (1); Tian, Xinfeng (1); Duan, Yaxuan (1); Li, Dongjian (1); Sun, Ce (1); Dong, Xiaona (1)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China

Corresponding author:Da, Z.(dazhengshang@opt.ac.cn)

Source title:Qiangjiguang Yu Lizishu/High Power Laser and Particle Beams

Abbreviated source title:Qiangjiguang Yu Lizishu

Volume:23

Issue:9

Issue date:September 2011

Publication year:2011

Pages:2346-2350

Language:Chinese

ISSN:10014322

CODEN:QYLIEL

Document type:Journal article (JA)

Publisher:Editorial Office of High Power Laser and Particle Beams, P.O. Box 919-805, Mianyang, 621900, China

Abstract:To suppress the influences aroused by CCD noise in measuring laser near field distribution, the paper proposes a method to correct CCD noise using a priori knowledge of CCD noise and its observed value based on contrast test model. Compared with the existing method, this method can suppress the influences caused by CCD noise effectively, thus lowering measurement uncertainty and improving measurement confidence, and the extended uncertainty reduces from 0.6% to 0.3%.

Number of references:8

Main heading:Uncertainty analysis

Controlled terms:Charge coupled devices - Particle beams - Physics

Uncontrolled terms:Light field distribution - Measurement noise - Measurement uncertainty - Near fields - Near-field distribution - Priori knowledge - Test models - Uncertainty - Value-based

Classification code:714.2 Semiconductor Devices and Integrated Circuits - 922.1 Probability Theory - 931 Classical Physics; Quantum Theory; Relativity - 932 High Energy Physics; Nuclear Physics; Plasma Physics - 932.1 High Energy Physics - 933 Solid State Physics

DOI:10.3788/HPLPB20112309.2346

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 43>

 

Accession number:20104913465596

Title:General coupled-mode analysis for gain-guided, index-antiguided fibers, and index-guided fibers

Authors:Zhou, Enyu (1); Yan, Kunlun (2); Zhao, Baoyin (2); Wang, Yishan (2); Wei, Wei (2); Peng, Bo (2)

Author affiliation:(1) Department of Optical Science and Engineering, Fudan University, Shanghai 200433, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Procession Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (3) Institute of Advanced Materials, Nanjing University of Posts and Telecommunications, Nanjing 210003, China

Corresponding author:Wei, W.(iamww@fudan.edu.cn)

Source title:Optics Communications

Abbreviated source title:Opt Commun

Volume:284

Issue:4

Issue date:February 15, 2011

Publication year:2011

Pages:1034-1037

Language:English

ISSN:00304018

CODEN:OPCOB8

Document type:Journal article (JA)

Publisher:Elsevier, P.O. Box 211, Amsterdam, 1000 AE, Netherlands

Abstract:Coupling properties of two gain-guided, index-antiguided (GG + IAG) fibers, or GG + IAG fibers and index-guided (IG) fibers, were investigated by the further general coupled-mode theory. The theory can explain any situation of two fiber coupling. The interesting results were obtained by the numerical computation method. For two GG + IAG fiber coupling, total power was decreased as rising real-valued refractive-index difference (real part of refractive-index difference between core and cladding, RVRID), while the power of one GG + IAG fiber was damped oscillations with increased core separation. In the GG + IAG fiber and IG fiber coupler, the variation of the RVRID could change coupling characteristics. These results are different from two IG fibers coupling, and the general coupled-mode theory may provide meaningful references for new concepts of directional coupler and pumping technology of GG + IAG fiber. &copy; 2010 Elsevier B.V. All rights reserved.

Number of references:10

Main heading:Fibers

Controlled terms:Fiber optics - Optical waveguides

Uncontrolled terms:Coupled-mode analysis - Coupled-mode theory - Coupling characteristic - Coupling properties - Damped oscillations - Fiber couplers - Fiber couplings - Index-guided fibers - Numerical computations - Real part  - Total power

Classification code:741.1.2 Fiber Optics - 741.3 Optical Devices and Systems - 812 Ceramics, Refractories and Glass - 817 Plastics and Other Polymers: Products and Applications

DOI:10.1016/j.optcom.2010.10.067

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 44>

 

Accession number:20111313874260

Title:Luminescence properties of Nd³⁺-doped Y<inf>2</inf>O<inf>3</inf> nanoparticles in organic media

Authors:Cui, Xiaoxia (1); Lu, Jiabao (1); Gao, Chao (1); Hou, Chaoqi (1); Wei, Wei (1); Peng, Bo (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Science (CAS), Xi'an, Shaanxi 710119, China; (2) Graduate School of the Chinese Academy of Sciences, Beijing 100039, China; (3) Institute of Advanced Materials, Nanjing University of Posts and Telecommunications, Nanjing 210003, China

Corresponding author:Wei, W.(iamwwei@njupt.edu.cn)

Source title:Applied Physics A: Materials Science and Processing

Abbreviated source title:Appl Phys A

Volume:103

Issue:1

Issue date:April 2011

Publication year:2011

Pages:27-32

Language:English

ISSN:09478396

E-ISSN:14320630

CODEN:APAMFC

Document type:Journal article (JA)

Publisher:Springer Heidelberg, Haberstrasse 7, Heidelberg, 69126, Germany

Abstract:Nd³⁺-doped yttrium oxide nanoparticles (Y<inf>2</inf>O <inf>3</inf>:Nd) with cubic phase were obtained successfully by a glycine-nitrate solution combustion method. The results of Fourier transform infrared spectra (FTIR) showed that the -OH groups residing on the nanoparticles surfaces were reduced effectively by modifying with capping agent. The modified Y<inf>2</inf>O<inf>3</inf>:Nd nanoparticles displayed good monodispersity and excellent luminescence in N,N-dimethylformamide (DMF) solvent. Some optical parameters were calculated by Judd-Ofelt analysis based on absorption and fluorescence spectra. A relative large stimulated emission cross section, 1.7&times;10^-20 cm², of the ⁴F <inf>3/2</inf>&rarr;⁴I<inf>11/2</inf> transition was calculated. Theses results show that the modified Y<inf>2</inf>O<inf>3</inf>:Nd nanoparticles display good luminescence behavior in organic media. &copy; 2010 Springer-Verlag.

Number of references:24

Main heading:Nanoparticles

Controlled terms:Amino acids - Dimethylformamide - Fourier transforms - Luminescence - Neodymium - Organic solvents - Spectroscopy - Yttrium - Yttrium oxide

Uncontrolled terms:Absorption and fluorescence spectra - Capping agent - Cubic phase - Fourier transform infrared spectra - FTIR - Glycine nitrates - Judd-Ofelt analysis - Luminescence properties - Monodispersity - N ,N-Dimethylformamide  - OH group - Optical parameter - Organic media - Oxide nanoparticles - Stimulated emission cross section

Classification code:933 Solid State Physics - 921.3 Mathematical Transformations - 804.1 Organic Compounds - 801 Chemistry - 761 Nanotechnology - 741.1 Light/Optics - 708 Electric and Magnetic Materials - 549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals - 547.2 Rare Earth Metals

DOI:10.1007/s00339-010-6015-3

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 45>

 

Accession number:20113914373355

Title:The extracting system design of small dim targets in complex background

Authors:Liang, Dong Sheng (1); Liu, Hui (1); Liu, Wen (1)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (2) Graduate University of Chinese Academy of Sciences, Beijing 100039, China

Corresponding author:Liang, D.S.(dongshengstar@126.com)

Source title:Advanced Materials Research

Abbreviated source title:Adv. Mater. Res.

Volume:328-330

Monograph title:Mechatronics and Materials Processing I

Issue date:2011

Publication year:2011

Pages:2324-2327

Language:English

ISSN:10226680

ISBN-13:9783037852385

Document type:Conference article (CA)

Conference name:2011 International Conference on Mechatronics and Materials Processing, ICMMP 2011

Conference date:November 18, 2011 - November 20, 2011

Conference location:Guangzhou, China

Conference code:86635

Sponsor:Guangzhou University

Publisher:Trans Tech Publications, P.O. Box 1254, Clausthal-Zellerfeld, D-38670, Germany

Abstract:For the moving small dim targets in visible image sequences with low SNR and complex background, whose contained characters are simple and poor, they are extracted difficultly. This paper proposes a new method to detect and extract positions of small dim moving targets. According to the features of moving targets, in a very short time interval, the target trajectory is considered as a straight line approximately. Firstly, it makes use of threshold segmentation methods to extract the positions of targets in each frame, then building the motion line equations after the joint of multi-frame processing results. Finally, the position of small dim targets are detected out and extracted, and false targets are eliminated accurately. Hardware system was designed and the algorithm is implemented on hardware systems successfully. The experiment results show related functions of the system and extracting algorithm is feasible, the system is stable and has a strong process ability, which can effectively detect and extract small and dim target in complex background correctly. &copy; 2011 Trans Tech Publications.

Number of references:5

Main heading:Mechatronics

Controlled terms:Algorithms - Equations of motion - Image processing - Systems analysis - Target tracking

Uncontrolled terms:Complex background - Dim target - Extracting algorithm - False targets - Hardware design - Hardware system - Low SNR - Moving targets - Multi-frame - Related functions  - Short time intervals - Target trajectory - Threshold segmentation - Visible image

Classification code:961 Systems Science - 921.2 Calculus - 921 Mathematics - 741 Light, Optics and Optical Devices - 723 Computer Software, Data Handling and Applications - 716.2 Radar Systems and Equipment - 608 Mechanical Engineering, General

DOI:10.4028/www.scientific.net/AMR.328-330.2324

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 46>

 

Accession number:20112814137355

Title:Advance in imaging spectropolarimeter

Authors:Wang, Xin-Quan (1); Xiangli, Bin (2); Huang, Min (2); Hu, Liang (1); Zhou, Jin-Song (2); Jing, Juan-Juan (1)

Author affiliation:(1) Laboratory of Spectral Imaging Technique, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (2) Academy of Opto-Electronics, Chinese Academy of Sciences, Beijing 100094, China; (3) Graduate University of Chinese Academy of Sciences, Beijing 100049, China

Corresponding author:Wang, X.-Q.(wangxinquan@opt.ac.cn)

Source title:Guang Pu Xue Yu Guang Pu Fen Xi/Spectroscopy and Spectral Analysis

Abbreviated source title:Guang Pu Xue Yu Guang Pu Fen Xi

Volume:31

Issue:7

Issue date:July 2011

Publication year:2011

Pages:1968-1974

Language:Chinese

ISSN:10000593

CODEN:GYGFED

Document type:Journal article (JA)

Publisher:Science Press, 18,Shuangqing Street,Haidian, Beijing, 100085, China

Abstract:Imaging spectropolarimeter (ISP) is a type of novel photoelectric sensor which integrated the functions of imaging, spectrometry and polarimetry. In the present paper, the concept of the ISP is introduced, and the advances in ISP at home and abroad in recent years is reviewed. The principles of ISPs based on novel devices, such as acousto-optic tunable filter (AOTF) and liquid crystal tunable filter (LCTF), are illustrated. In addition, the principles of ISPs developed by adding polarized components to the dispersing-type imaging spectrometer, spatially modulated Fourier transform imaging spectrometer, and computer tomography imaging spectrometer are introduced. Moreover, the trends of ISP are discussed too.

Number of references:52

Main heading:Spectrometry

Controlled terms:Fourier transforms - Liquid crystals - Polarimeters - Spectrometers

Uncontrolled terms:Acousto-optic tunable filters - Computer tomography - Fourier transform imaging spectrometers - Imaging Polarimeter - Imaging spectrometer - Imaging spectrometers - Liquid crystal tunable filter - Novel devices - Photoelectric sensors - Polarized components  - Spectropolarimeters

Classification code:801 Chemistry - 804 Chemical Products Generally - 921.3 Mathematical Transformations - 941.3 Optical Instruments

DOI:10.3964/j.issn.1000-0593(2011)07-1968-07

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 47>

 

Accession number:20140917383555

Title:Tunable nonlinear frequency conversion of bismuth-tellurite glass holey fiber

Authors:Ryasnyanskiy, Aleksandr (1); Lin, Aoxiang (1); Guintrand, Cyril (1); Biaggio, Ivan (1); Toulouse, Jean (1)

Author affiliation:(1) Center for Optical Technologies and Physics Department, Lehigh University, Bethlehem, PA 18015, United States; (2) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics (XIOPM), Chinese Academy of Sciences (CAS), Xi'an 710119, China

Corresponding author:Ryasnyanskiy, A.(alr309@lehigh.edu)

Source title:Optics InfoBase Conference Papers

Abbreviated source title:Opt.InfoBase Conf. Papers

Monograph title:Optical Fiber Communication Conference, OFC 2011

Issue date:2011

Publication year:2011

Language:English

E-ISSN:21622701

ISBN-13:9781557529060

Document type:Conference article (CA)

Conference name:Optical Fiber Communication Conference, OFC 2011

Conference date:March 6, 2011  -  March 10, 2011

Conference location:Los Angeles, CA, United states

Conference code:102732

Publisher:Optical Society of America, 2010 Massachusetts Ave, NW, Washington, DC, DC 20036-1023, United States

Abstract:We report on tunable parametric generation (PG) and third-harmonic generation (THG) in a 2.9-&mu;m core bismuth-tellurite holey glass fiber. The maximum conversion efficiency was measured to be 0.1% and 0.06% for PG and THG respectively. &copy; 2010 Optical Society of America.

Number of references:18

Main heading:Glass

Controlled terms:Harmonic generation - Holey fibers - Tellurium compounds

Uncontrolled terms:Nonlinear frequency conversion - Parametric generation - Third-harmonic generation

Classification code:751.1 Acoustic Waves - 804.1 Organic Compounds - 812.3 Glass - 951 Materials Science

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 48>

 

Accession number:20113014170676

Title:High average power, strictly all-fiber supercontinuum source with good beam quality

Authors:Hu, Xiaohong (1); Zhang, Wei (1); Yang, Zhi (1); Wang, Yishan (1); Zhao, Wei (1); Li, Xiaohui (1); Wang, Hushan (1); Li, Cheng (1); Shen, Deyuan (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China

Corresponding author:Wang, Y.(yshwang@opt.ac.cn)

Source title:Optics Letters

Abbreviated source title:Opt. Lett.

Volume:36

Issue:14

Issue date:July 15, 2011

Publication year:2011

Pages:2659-2661

Language:English

ISSN:01469592

E-ISSN:15394794

CODEN:OPLEDP

Document type:Journal article (JA)

Publisher:Optical Society of America, 2010 Massachusetts Ave, NW, Washington, DC, DC 20036-1023, United States

Abstract:A 1:05 &mu;m picosecond pulsed fiber master oscillator power amplifier system delivering an average power of over 100W was used to pump a 5m long commercially available photonic crystal fiber and a 49:8W supercontinuum spanning from around 500nm to above 1700nm was generated. Strictly single mode operation of the all-fiber supercontinuum source across the whole spectral range was verified through the quantitative measurement of the beam quality. &copy; 2011 Optical Society of America.

Number of references:10

Main heading:Photonic crystal fibers

Controlled terms:Fibers - Optical pumping - Photonic crystals - Power amplifiers

Uncontrolled terms:All fiber - Average power - Fiber master-oscillator - Good beam quality - High average power - Picoseconds - Quantitative measurement - Single mode operation - Spectral range - Supercontinuum  - Supercontinuum sources

Classification code:713.1 Amplifiers - 741.1 Light/Optics - 741.3 Optical Devices and Systems - 812 Ceramics, Refractories and Glass - 817 Plastics and Other Polymers: Products and Applications - 951 Materials Science

DOI:10.1364/OL.36.002659

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 49>

 

Accession number:20114214432393

Title:Mathematical model of the laser frequency shift modulated by small signal low frequency current

Authors:Yan, Deke (1); Zhong, Zhen (3); Sun, Chuandong (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (2) Graduate University of the Chinese Academy of Sciences, Beijing 100049, China; (3) Institute of Optical Communication Engineering, Nanjing University, Nanjing 210093, China

Corresponding author:Yan, D.(yandeke@opt.ac.cn)

Source title:Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering

Abbreviated source title:Hongwai yu Jiguang Gongcheng Infrared Laser Eng.

Volume:40

Issue:8

Issue date:August 2011

Publication year:2011

Pages:1465-1468

Language:Chinese

ISSN:10072276

Document type:Journal article (JA)

Publisher:Chinese Society of Astronautics, P.O. Box 225-32, Tianjin, 300192, China

Abstract:When laser transmits through the fiber, the more narrow of the laser spectral line width is, the more lower of the threshold for the stimulated Brillouin scattering is. High power laser tends to bring stimulated Brillouin scattering, thereby affecting the laser transmission. Modulating the high power laser diode by small signal current is one of the means for solving this problem. Effected by the sine small signal modulating current, the output laser of the distributed feedback semiconductor laser diode could produce frequency shift and broaden the spectral line width. Accordingly, it could increase the threshold of stimulated Brillouin scattering and reduce the transmission loss. It was shown that the mathematical expression for the laser frequency shift associated with modulating current's amplitude and frequency on the condition of sine small signal low frequency modulating current. Then, the relative electro-optical system was also designed for the experiment. And then, the parameters of the mathematical model were obtained by data fitting.

Number of references:9

Main heading:Semiconductor lasers

Controlled terms:Diodes - Frequency shift keying - High power lasers - Light polarization - Mathematical models - Optical systems - Scattering - Semiconductor diodes - Spectroscopy - Stimulated Brillouin scattering  - Ultrasonics

Uncontrolled terms:Data fittings - Distributed feedback semiconductor laser - Electro-optical systems - Frequency shift - High power laser diode - Laser frequency - Laser spectral lines - Laser transmission - Low frequency - Low-frequency currents  - Mathematical expressions - Modulating current - Small signal - Spectral line width - Transmission loss

Classification code:801 Chemistry - 753.1 Ultrasonic Waves - 744.1 Lasers, General - 741.3 Optical Devices and Systems - 921 Mathematics - 741.1 Light/Optics - 717 Optical Communication - 716 Telecommunication; Radar, Radio and Television - 714.2 Semiconductor Devices and Integrated Circuits - 718 Telephone Systems and Related Technologies; Line Communications

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

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Accession number:20113614296190

Title:Numerical simulation of terahertz generation and detection based on ultrafast photoconductive antennas

Authors:Chen, Long-Chao (1); Fan, Wen-Hui (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China

Corresponding author:Fan, W.-H.(fanwh@opt.ac.cn)

Source title:Proceedings of SPIE - The International Society for Optical Engineering

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:8195

Monograph title:International Symposium on Photoelectronic Detection and Imaging 2011: Terahertz Wave Technologies and Applications

Issue date:2011

Publication year:2011

Article number:1

Language:English

ISSN:0277786X

CODEN:PSISDG

ISBN-13:9780819488367

Document type:Conference article (CA)

Conference name:International Symposium on Photoelectronic Detection and Imaging 2011: Terahertz Wave Technologies and Applications

Conference date:May 24, 2011 - May 26, 2011

Conference location:Beijing, China

Conference code:86295

Sponsor:Chinese Society of Astronautics (CAS)

Publisher:SPIE, P.O. Box 10, Bellingham, WA 98227-0010, United States

Abstract:The numerical simulation of terahertz generation and detection in the interaction between femtosecond laser pulse and photoconductive material has been reported in this paper. The simulation model based on the Drude-Lorentz theory is used, and takes into account the phenomena that photo-generated electrons and holes are separated by the external bias field, which is screened by the space-charge field simultaneously. According to the numerical calculation, the terahertz time-domain waveforms and their Fourier-transformed spectra are presented under different conditions. The simulation results indicate that terahertz generation and detection properties of photoconductive antennas are largely influenced by three major factors, including photo-carriers' lifetime, laser pulse width and pump laser power. Finally, a simple model has been applied to simulate the detected terahertz pulses by photoconductive antennas with various photo-carriers' lifetimes, and the results show that the detected terahertz spectra are very different from the spectra radiated from the emitter. &copy; 2011 SPIE.

Number of references:23

Main heading:Terahertz wave detectors

Controlled terms:Antennas - Computer simulation - Laser applications - Microwave antennas - Optical pumping - Photoconductivity - Terahertz waves - Time domain analysis - Ultrafast lasers - Ultrashort pulses

Uncontrolled terms:Bias field - Femtosecond laser pulse - Laser pulse width - Major factors - Numerical calculation - Photo-carriers - Photocarrier - Photoconductive antennas - Photoconductive materials - Photogenerated electrons  - Pump laser - Simulation model - Simulation result - Space charge field - Space-charge screening - Tera Hertz - Terahertz generation - Terahertz pulse - Terahertz spectra - Time-domain waveforms  - Ultra-fast

Classification code:744.9 Laser Applications - 744.1 Lasers, General - 741.1 Light/Optics - 921 Mathematics - 732.2 Control Instrumentation - 716 Telecommunication; Radar, Radio and Television - 711 Electromagnetic Waves - 723.5 Computer Applications

DOI:10.1117/12.900319

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

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Accession number:20122715188610

Title:Target-oriented shape modeling with structure constraint for image segmentation

Authors:Zhang, Wuxia (1); Yuan, Yuan (1); Li, Xuelong (1); Yan, Pingkun (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, Shaanxi, China; (2) Graduate University of the Chinese Academy of Science, 19A Yuquanlu, Beijing, 100049, China

Corresponding author:Zhang, W.

Source title:1st Asian Conference on Pattern Recognition, ACPR 2011

Abbreviated source title:Asian Conf. Pattern Recogn., ACPR

Monograph title:1st Asian Conference on Pattern Recognition, ACPR 2011

Issue date:2011

Publication year:2011

Pages:194-198

Article number:6166707

Language:English

ISBN-13:9781457701221

Document type:Conference article (CA)

Conference name:1st Asian Conference on Pattern Recognition, ACPR 2011

Conference date:November 28, 2011 - November 28, 2011

Conference location:Beijing, China

Conference code:90727

Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States

Abstract:Image segmentation plays a critical role in medical imaging applications, whereas it is still a challenging problem due to the complex shapes and complicated texture of structures in medical images. Model based methods have been widely used for medical image segmentation as a priori knowledge can be incorporated. Accurate shape prior estimation is one of the major factors affecting the accuracy of model based segmentation methods. This paper proposes a novel statistical shape modeling method, which aims to estimate target-oriented shape prior by applying the constraint from the intrinsic structure of the training shape set. The proposed shape modeling method is incorporated into a deformable model based framework for image segmentation. The experimental results showed that the proposed method can achieve more accurate segmentation compared with other existing methods. &copy; 2011 IEEE.

Number of references:12

Main heading:Image segmentation

Controlled terms:Medical image processing - Pattern recognition

Uncontrolled terms:Complex shapes - Deformable models - Imaging applications - Intrinsic structures - Major factors - Manifold Assumption - Manifold learning - Medical image segmentation - Medical images - Model-based method  - Model-based segmentation - Priori knowledge - Shape modeling - Shape priors - Shape set - Statistical shapes - Structure constraints

Classification code:716 Telecommunication; Radar, Radio and Television - 723.2 Data Processing and Image Processing

DOI:10.1109/ACPR.2011.6166707

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 52>

 

Accession number:20112814124861

Title:Design of collective optic system for Thomson scattering measurements on Shenguang-III facility

Authors:Yan, Yadong (1); Lu, Weitao (1); Dong, Xiaona (1); He, Junhua (1); Liu, Xizhan (1); Zhang, Min (1); Zhang, Pengshun (1)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, Shaanxi 710119, China; (2) Graduate University of the Chinese Academy of Sciences, Beijing 100049, China

Corresponding author:Yan, Y.(yyd@opt.ac.cn)

Source title:Guangxue Xuebao/Acta Optica Sinica

Abbreviated source title:Guangxue Xuebao

Volume:31

Issue:6

Issue date:June 2011

Publication year:2011

Article number:0611002

Language:Chinese

ISSN:02532239

CODEN:GUXUDC

Document type:Journal article (JA)

Publisher:Chinese Optical Society, P.O. Box 80, Xi'an, 710068, China

Abstract:A Thomson scattering signal collective optic system is designed for Thomson scattering measurements on Shenguang-III facility. The optical system is composed of two coupled Cassegrain systems, and has an intermediate image plane. This configuration makes the optical path length long enough to transmit the scattering signal to the camera outside the target chamber. The catadioptric system makes it easier to balance chromatic aberration as there are few ultraviolet materials available. The corrector lens which has a long focal length is replaced by two faster corrector lenses, which make the fabrications and measurements easier. The obscuration ratio is reduced by choosing a proper intermediate magnification. The two refraction lenses beside the intermediate image plane help to couple the two systems well. A reticle is set at the intermediate image plane for system aiming and can be removed before event recording. This system has the total length of more than 5 m, with the maximal elements diameter of 190 mm. The field of view is 2 mm, the magnification is 1.5, and the object space F-number is 10, and the resolution is better than 20&mu;m.

Number of references:22

Main heading:Aberrations

Controlled terms:Image recording - Imaging systems - Light scattering - Optical systems - Scattering - Systems analysis

Uncontrolled terms:Cassegrain - Chromatic aberration - Field of views - Focal lengths - Intermediate image - Maximal elements - Object space - Obscuration ratio - Optic system - Optical path lengths  - Optical system designs - Scattering signals - Target chambers - Thomson scattering - Total length

Classification code:741 Light, Optics and Optical Devices - 746 Imaging Techniques - 961 Systems Science

DOI:10.3788/AOS201131.0611002

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

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Accession number:20113814357572

Title:Two dimensional principal components of natural images and its application

Authors:Wang, Dong (1); Lu, Huchuan (1); Li, Xuelong (1)

Author affiliation:(1) School of Information and Communication Engineering, Dalian University of Technology, China; (2) Xi'an Institute of Optics and Precision Mechanics Of CAS, China

Corresponding author:Lu, H.(lhchuan@dlut.edu.cn)

Source title:Neurocomputing

Abbreviated source title:Neurocomputing

Volume:74

Issue:17

Issue date:October 2011

Publication year:2011

Pages:2745-2753

Language:English

ISSN:09252312

E-ISSN:18728286

CODEN:NRCGEO

Document type:Journal article (JA)

Publisher:Elsevier, P.O. Box 211, Amsterdam, 1000 AE, Netherlands

Abstract:In this paper, two dimensional principal components of natural images (2D-PCs) are proposed. Similar to principal components of natural images (1D-PCs), 2D-PCs can also be viewed as fundamental components of human's receptive field because they contain edge-like, bar-like and grating-like patterns. However, compared to 1D-PCs, 2D-PCs are of surprising symmetry, stable regularity, good interpretability, and have little computational complexity in real applications. Then, based on 1D-PCs and 2D-PCs, we design two kinds of statistical texture features (STF(1D) and STF(2D)), and apply them to multi-class facial expression recognition. Numerous experimental results demonstrate that our statistical texture features are better or not worse than other popular features for facial expression recognition. &copy; 2011 Elsevier B.V.

Number of references:29

Main heading:Face recognition

Controlled terms:Computational complexity - Feature extraction - Gesture recognition - Textures - Two dimensional

Uncontrolled terms:2DPCA - Facial expression recognition - Fundamental component - Interpretability - Multi-class - Natural images - PCA - Principal Components - Real applications - Receptive fields  - Texture features

Classification code:716 Telecommunication; Radar, Radio and Television - 721.1 Computer Theory, Includes Formal Logic, Automata Theory, Switching Theory, Programming Theory - 902.1 Engineering Graphics - 933 Solid State Physics

DOI:10.1016/j.neucom.2011.03.047

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 54>

 

Accession number:20113714317115

Title:Nanoplasmonic triple-wavelength demultiplexers in two-dimensional metallic waveguides

Authors:Lu, H. (1); Liu, X.M. (1); Wang, L.R. (1); Mao, D. (1); Gong, Y.K. (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China

Corresponding author:Liu, X.M.(liuxueming72@yahoo.com)

Source title:Applied Physics B: Lasers and Optics

Abbreviated source title:Appl Phys B

Volume:103

Issue:4

Issue date:June 2011

Publication year:2011

Pages:877-881

Language:English

ISSN:09462171

CODEN:APBOEM

Document type:Journal article (JA)

Publisher:Springer Verlag, Tiergartenstrasse 17, Heidelberg, D-69121, Germany

Abstract:A novel kind of plasmonic wavelength demultiplexers (WDMs) based on two-dimensional metal-insulator-metal waveguides with side coupled nanocavities (SC-NCs) is proposed and numerically investigated. The WDMs contain three waveguide output channels, each of which functions as a dual-stopband plasmonic filter. The demultiplexing wavelengths can be tuned by controlling the lengths and widths of SCNCs. The finite-difference time-domain results can be accurately analyzed by the resonant theory of nanocavity. Our structures have important potential applications for design of WDM systems in highly integrated optical circuits. &copy; Springer-Verlag 2011.

Number of references:33

Main heading:Two dimensional

Controlled terms:Demultiplexing - Finite difference time domain method - Metal insulator boundaries - Photonic integration technology - Plasmons - Waveguides

Uncontrolled terms:Demultiplexers - Dual stopband - Finite difference time domains - Highly integrated - Metal insulator metals - Metallic waveguide - Nano-cavities - Output channels - Plasmonic - Potential applications  - Triple wavelengths - Wavelength demultiplexers - WDM systems

Classification code:902.1 Engineering Graphics - 718 Telephone Systems and Related Technologies; Line Communications - 717 Optical Communication - 921 Mathematics - 716 Telecommunication; Radar, Radio and Television - 714.2 Semiconductor Devices and Integrated Circuits - 712.1 Semiconducting Materials - 714.3 Waveguides

DOI:10.1007/s00340-011-4525-0

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

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Accession number:20112013983312

Title:Preparation of a new type of high-resolution light source

Authors:Dou, X.B. (1); Chen, X. (1); Bi, S.W. (1); Liu, W.Y. (1); Chen, M.R. (1); Chen, L. (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (2) Graduate School, Chinese Academy of Science, Beijing 10049, China; (3) Department of Physics, Northwest University, Xi'an 710069, China

Corresponding author:Dou, X. B.(douxibo@163.com)

Source title:Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

Abbreviated source title:Nucl Instrum Methods Phys Res Sect A

Volume:637

Issue:1 SUPPL.

Issue date:May 1, 2011

Publication year:2011

Pages:S134-S136

Language:English

ISSN:01689002

CODEN:NIMAER

Document type:Conference article (CA)

Publisher:Elsevier, P.O. Box 211, Amsterdam, 1000 AE, Netherlands

Abstract:The generation of a new type of high-resolution non-classical light source with a wavelength of 1064 nm is demonstrated experimentally. A periodically poled KTiOPO<inf>4</inf> (PPKTP) crystal is installed in a continuous-wave optical parametric amplifier (OPA), which is pumped by a 532 nm laser and seeded by a weak 1064 nm laser. The optical parametric down-conversion process is activated in the OPA and generates a non-classical optical field at a wavelength of 1064 nm. The partial squeezed spectrum is pre-detected by a homodyne detection setup. The experiment demonstrates that the resolution of the non-classical optical field is 1.43 times that of the classical optical field. &copy; 2010 Elsevier B.V. All rights reserved.

Number of references:13

Main heading:Light sources

Controlled terms:Light amplifiers - Microwave amplifiers - Optical frequency conversion - Optical parametric oscillators - Parametric amplifiers - Pumping (laser)

Uncontrolled terms:1064 nm - 1064 nm lasers - 532 nm laser - Continuous waves - High resolution - Homodyne detection - Non-classical lights - Optical field - Optical parametric amplifiers - Parametric down-conversion process  - Periodically poled

Classification code:713.1 Amplifiers - 713.2 Oscillators - 741.1.1 Nonlinear Optics - 741.3 Optical Devices and Systems - 744 Lasers

DOI:10.1016/j.nima.2010.02.040

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 56>

 

Accession number:20112013983317

Title:Theoretical study and experimental scheme for the generation of a 1064-nm continuous variable entangled light source with quasi-phase-matching PPKTP crystal

Authors:Liu, W.Y. (1); Bi, S.W. (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China

Corresponding author:Liu, W. Y.(liu02401073@sina.com)

Source title:Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

Abbreviated source title:Nucl Instrum Methods Phys Res Sect A

Volume:637

Issue:1 SUPPL.

Issue date:May 1, 2011

Publication year:2011

Pages:S153-S157

Language:English

ISSN:01689002

CODEN:NIMAER

Document type:Conference article (CA)

Publisher:Elsevier, P.O. Box 211, Amsterdam, 1000 AE, Netherlands

Abstract:Beginning from Maxwell's equations, various factors required for the non-degenerate optical parametric amplifier (NOPA) to operate are considered step by step. Analytic expressions are obtained, generated from the experimental parameters and through the numerical simulation of the quantum-correlated spectrum between the signal and the idler modes from the NOPA operating below threshold. On this basis, an experimental program is designed for the generation of a 1064-nm continuous variable entanglement light source with a quasi-phase-matching periodical polarized KTiOPO<inf>4</inf> (PPKTP) crystal through a below-threshold optical parametric down-conversion process. This will play a crucial role in subsequent experiments. &copy; 2010 Elsevier B.V. All rights reserved.

Number of references:19

Main heading:Phase matching

Controlled terms:Light amplifiers - Light sources - Maxwell equations - Microwave amplifiers - Parametric amplifiers

Uncontrolled terms:Analytic expressions - Continuous variable entanglement light source - Continuous variables - Experimental parameters - Experimental program - Experimental scheme - Maxwell's equations - Numerical simulation - Optical parametric amplifiers - Parametric down-conversion process  - PPKTP crystal - Quasi phase matching - Step-by-step - Theoretical study

Classification code:713 Electronic Circuits - 713.1 Amplifiers - 744 Lasers - 744.1 Lasers, General - 921.2 Calculus

DOI:10.1016/j.nima.2010.02.045

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 57>

 

Accession number:20114014386461

Title:The hybrid refractive-diffractive optical system design of preposition of aperture LWIR

Authors:Liu, Kai (1); Chen, Rongli (1)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, CAS, Xi'an, Shaanxi 710119, China; (2) Graduate School, CAS, Beijing, 100039, China

Corresponding author:Liu, K.(sg-lika@163.com)

Source title:ICEOE 2011 - 2011 International Conference on Electronics and Optoelectronics, Proceedings

Abbreviated source title:ICEOE - Int. Conf. Electron. Optoelectron., Proc.

Volume:3

Monograph title:ICEOE 2011 - 2011 International Conference on Electronics and Optoelectronics, Proceedings

Issue date:2011

Publication year:2011

Pages:V3231-V3234

Article number:6013346

Language:English

ISBN-13:9781612842738

Document type:Conference article (CA)

Conference name:2011 International Conference on Electronics and Optoelectronics, ICEOE 2011

Conference date:July 29, 2011 - July 31, 2011

Conference location:Dalian, China

Conference code:86661

Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States

Abstract:The LWIR (Long Wave Infrared) used for observation heat. The influence of background radiation caused the sensitivity of the system decreased. The article uses subzero refrigeration detector, and require the efficiency of luminescence railing reaching 100%. The paper deduce the design formula of preposition of aperture LWIR, and the wave band 10&sim;12&mu;m, diameter 50mm, F/2, field 8.2⁰&times;8.2⁰. This paper based on the principle of binary diffractive optical elements, the unique dispersion properties have the incomparable advantage compared with traditional optical components in calibration system. Design results show that the hybrid refractive-diffractive Optical System compared with the traditional infrared optical system, not only use the fewer optical elements, and achieve the purpose of the lightweight, and the system performance also have significantly improved. &copy; 2011 IEEE.

Number of references:8

Main heading:Optical systems

Controlled terms:Diffractive optics - Infrared radiation - Optical design - Optics - Optoelectronic devices - Systems analysis

Uncontrolled terms:Background radiation - Calibration system - Design formulae - Dispersion properties - Infrared optical systems - infrared system - Long wave infrared - Optical components - Wavebands

Classification code:741.1 Light/Optics - 741.3 Optical Devices and Systems - 961 Systems Science

DOI:10.1109/ICEOE.2011.6013346

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

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Accession number:20113114199258

Title:808 nm CW 2000 W semiconductor laser vertical stack

Authors:Zhang, Entao (1); Zhang, Yanxin (1); Xiong, Lingling (1); Wang, Jingwei (1); Kang, Lijun (2); Yang, Kai (2); Wu, Di (2); Yuan, Zhenbang (2); Dai, Huabin (2); Liu, Xingsheng (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics of Chinese Academy of Sciences, Xi'an 710119, China; (2) Xi'an Focuslight Optoelectronics Technology Co., Ltd., Xi'an 710119, China

Corresponding author:Zhang, E.(Entaozhang@163.com)

Source title:Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering

Abbreviated source title:Hongwai yu Jiguang Gongcheng Infrared Laser Eng.

Volume:40

Issue:6

Issue date:June 2011

Publication year:2011

Pages:1075-1080

Language:Chinese

ISSN:10072276

Document type:Journal article (JA)

Publisher:Chinese Society of Astronautics, P.O. Box 225-32, Tianjin, 300192, China

Abstract:In order to promote the performance and power of high-power semiconductor lasers, double-faced thermal conduction technology was used, thermal design and packaging design were theoretically analyzed and optimized, which greatly improved the power of micro-channel water cooled vertical stack and single bar semiconductor lasers. The power of 808 nm 20 bars vertical stack semiconductor laser reaches 2000 W under the continuous wave (CW) condition, the average power of each bar reaches 100 W. The experimental data of LIV character, spectrum character, facula and smile of near field, the spreading angle and direction of semiconductor laser were obtained which showed the excellent performance of this semiconductor lasers. Also the life-time test experiment was carried out and the result shows the good performance. The high-power semiconductor lasers will be used in many application fields.

Number of references:8

Main heading:Semiconductor lasers

Controlled terms:Chip scale packages - Continuous wave lasers - High power lasers - Power electronics

Uncontrolled terms:Application fields - Average power - Continuous waves - Excellent performance - Experimental data - High power semiconductor laser - Life-times - Micro-channel water cooled - Near fields - Packaging designs  - Spreading angle - Thermal conduction - Thermal designs - Vertical stacks

Classification code:714.2 Semiconductor Devices and Integrated Circuits - 715.2 Industrial Electronic Equipment - 744.1 Lasers, General

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 59>

 

Accession number:20112714112344

Title:Infrared automatic capture technology on shipborne photoelectric tracking system

Authors:Qiao, Yongming (1); Hao, Wei (1); Tian, Guangyuan (1); Han, Junfeng (1)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China

Corresponding author:Qiao, Y.(qym@opt.ac.cn)

Source title:Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering

Abbreviated source title:Hongwai yu Jiguang Gongcheng Infrared Laser Eng.

Volume:40

Issue:4

Issue date:April 2011

Publication year:2011

Pages:585-588+630

Language:Chinese

ISSN:10072276

Document type:Journal article (JA)

Publisher:Chinese Society of Astronautics, P.O. Box 225-32, Tianjin, 300192, China

Abstract:Aiming at the characteristics of shipborne photoelectric tracking system that works under mobile pedestal and complicated sea background, a method of using a mathematics platform for line of sight (LOS) stabilization was proposed. Using strapdown inertial navigation system (SINS) and offset staff adjustment on line, the zero steady-state angle error of LOS dynamic collimation was realized when there was no infrared tracking feedback. Moreover, the interference of complicated sea background has been restrained by designating an infrared image area based on prior knowledge and the capability and stability of automatic capture based mobile pedestal have been enhanced. Now, this system is placed at a small warship of which dead weight is only 700 tons, then the probability of independent capture is more than 95% under four-grate sea condition.

Number of references:8

Main heading:Navigation

Controlled terms:Inertial navigation systems - Infrared imaging - Photoelectricity - Stabilization - State feedback - Tracking (position) - Warships

Uncontrolled terms:Area-based - Dynamic collimation - Infrared images - Line of Sight - Prior knowledge - Shipborne - Steady-state angle - Strap-down inertial navigation systems - Tracking system

Classification code:951 Materials Science - 746 Imaging Techniques - 741.1 Light/Optics - 731.1 Control Systems - 716.2 Radar Systems and Equipment - 431.5 Air Navigation and Traffic Control - 404.1 Military Engineering

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 60>

 

Accession number:20114814570320

Title:Stray light removing design and simulation of the three-mirror optical system used in field bias

Authors:Yan, Peipei (1); Fan, Xuewu (1); Zou, Gangyi (1); Yang, Lihua (1); He, Jianwei (1)

Author affiliation:(1) Space Optics Laboratory, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (2) Graduate University of the Chinese Academy of Sciences, Beijing 100049, China

Corresponding author:Yan, P.(yppoptics@163.com)

Source title:Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering

Abbreviated source title:Hongwai yu Jiguang Gongcheng Infrared Laser Eng.

Volume:40

Issue:10

Issue date:October 2011

Publication year:2011

Pages:1997-2002

Language:Chinese

ISSN:10072276

Document type:Journal article (JA)

Publisher:Chinese Society of Astronautics, P.O. Box 225-32, Tianjin, 300192, China

Abstract:The stray light properties of the three-mirror optical system used in field bias was analyzed and the basic design principles of the light shade and baffle vanes were presented, then the design of them was discussed. The principles of stray light eliminating and evaluation using computer simulation technology were put forward. Considering that the system had a special rectangular field of view, and the field was off-axis in y direction, a certain demand on the external lens hood was proposed. So boxshaped outer wall combined with the cone-shaped wall was designed. The window shades were designed to be square and laid gradient by CAD modeling. Then, the system model was built in the Tracepro stray light analysis software with wavelength &lambda;=0.25&mu;m in which the light was traced according to the sixteen off-axis angles between 0.5 and 80, at the azimuth angles of 0&deg; and 90&deg;. Finally the PST curves were given through the calculation. It shows that the PST curves are going down in general and reach 10^-8 at off-axis angles of 25&deg;. The coefficient of the stray light is 3.59%. It proves the feasibility of design of the stray light eliminating and the further application can be carried out.

Number of references:9

Main heading:Stray light

Controlled terms:Computer simulation - Design - Mirrors - Optical systems - Walls (structural partitions)

Uncontrolled terms:Azimuth angles - Baffle vane - CAD modeling - Computer simulation technology - Design and simulation - Design Principles - External light shade - Field of views - In-field - Light properties  - Off-axis - Off-axis angles - PST - System models - Three-mirror optical systemused in field bias - TracePro

Classification code:402 Buildings and Towers - 408 Structural Design - 723.5 Computer Applications - 741.1 Light/Optics - 741.3 Optical Devices and Systems

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

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Accession number:20114214430549

Title:Single- and dual-pulse oscillation in a passively Q-switched Nd:YAG microchip laser

Authors:Niu, Linquan (1); Gao, Cunxiao (1); Zhu, Shaolan (1); Sun, Chuandong (1); He, Haodong (1); Song, Zhiyuan (1); Tang, Weidong (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China

Corresponding author:Niu, L.

Source title:Optics Express

Abbreviated source title:Opt. Express

Volume:19

Issue:21

Issue date:October 10, 2011

Publication year:2011

Pages:20628-20633

Language:English

E-ISSN:10944087

Document type:Journal article (JA)

Publisher:Optical Society of America, 2010 Massachusetts Ave, NW, Washington, DC, DC 20036-1023, United States

Abstract:Experimental investigation of single and dual pulses in a passively Q-switched Nd:YAG microchip laser with a Cr⁴⁺:YAG saturable absorber has been reported. The dual pulses consist of a main and a satellite pulse with respective spectra, intensities, and durations. It is found that the preponderant oscillating mode gives birth to the main pulse, and the other oscillating mode corresponds to the satellite pulse. Our results demonstrate that the dual-pulse emission results from double-longitudinal-mode oscillation in high pump regime. &copy; 2011 Optical Society of America.

Number of references:28

Main heading:Optical pumping

Controlled terms:Microprocessor chips - Neodymium - Neodymium lasers - Q switching

Uncontrolled terms:Dual-pulses - Experimental investigations - Main pulse - Nd:YAG microchip lasers - Oscillating modes - Passively Q-switched - Saturable absorbers

Classification code:547.2 Rare Earth Metals - 721 Computer Circuits and Logic Elements - 722 Computer Systems and Equipment - 741.1 Light/Optics - 744.4 Solid State Lasers - 744.8 Laser Beam Interactions

DOI:10.1364/OE.19.020628

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

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Accession number:20113214216483

Title:Hyperspectral image compression technology research based on EZW

Authors:Wei, Jun-Xia (1); Xiangli, Bin (3); Duan, Xiao-Feng (1); Xu, Zhao-Hui (5); Xue, Li-Jun (1)

Author affiliation:(1) Key Laboratory of Spectral Imaging Technology of Chinese Academy of Sciences, Xi'an 710119, China; (2) Laboratory of Spectral Imaging Technology, Xi'an Institute of Optics and Precision Mechanics, Xi'an 710119, China; (3) Academy of Opto-Electronics, Chinese Acad. of Sci., Beijing 100190, China; (4) Graduate University of Chinese Acad. of Sci., Beijing 100049, China; (5) Laboratory of Photoelectricity Measure and Control Technology, Xi'an Institute of Optics and Precision Mechanics, Xi'an 710119, China

Corresponding author:Xiangli, B.(xiangli@opt.cn)

Source title:Guang Pu Xue Yu Guang Pu Fen Xi/Spectroscopy and Spectral Analysis

Abbreviated source title:Guang Pu Xue Yu Guang Pu Fen Xi

Volume:31

Issue:8

Issue date:August 2011

Publication year:2011

Pages:2283-2286

Language:Chinese

ISSN:10000593

CODEN:GYGFED

Document type:Journal article (JA)

Publisher:Science Press, 18,Shuangqing Street,Haidian, Beijing, 100085, China

Abstract:Along with the development of hyperspectral remote sensing technology, hyperspectral imaging technology has been applied in the aspect of aviation and spaceflight, which is different from multispectral imaging, and with the band width of nanoscale spectral imaging the target continuously, the image resolution is very high. However, with the increasing number of band, spectral data quantity will be more and more, and these data storage and transmission is the problem that the authors must face. Along with the development of wavelet compression technology, in field of image compression, many people adopted and improved EZW, the present paper used the method in hyperspectral spatial dimension compression, but does not involved the spectrum dimension compression. From hyperspectral image compression reconstruction results, whether from the peak signal-to-noise ratio (PSNR) and spectral curve or from the subjective comparison of source and reconstruction image, the effect is well. If the first compression of image from spectrum dimension is made, then compression on space dimension, the authors believe the effect will be better.

Number of references:11

Main heading:Technology

Controlled terms:Image compression - Image resolution - Remote sensing - Signal to noise ratio

Uncontrolled terms:Compression of images - Data storage - EZW - HyperSpectral - Hyperspectral image compression - Hyperspectral Imaging - Hyperspectral remote sensing technology - In-field - MSE - Multispectral imaging  - Nano scale - Peak signal-to-noise ratio - PSNR - Reconstruction image - Space dimensions - Spatial dimension - Spectral curves - Spectral data - Spectral imaging - Wavelet compression

Classification code:716.1 Information Theory and Signal Processing - 731.1 Control Systems - 741 Light, Optics and Optical Devices - 742 Cameras and Photography - 901 Engineering Profession

DOI:10.3964/j.issn.1000-0593(2011)08-2283-04

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

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Accession number:20114714540036

Title:Die bonding of single emitter semiconductor laser with nano-scale silver paste

Authors:Yan, Yi (1); Chen, Xu (1); Liu, XingSheng (2); Lu, Guo-Quan (4)

Author affiliation:(1) School of Chemical Engineering and Technology, Tianjin University, Tianjin, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, Shaanxi, China; (3) Xi'an Focuslight Technologies Co., LTD, Xi'an, Shanxi, China; (4) Department of Material Science and Engineering, Virginia Tech., United States; (5) Tianjin Key Laboratory of Advanced Joining Technology, School of Material Science and Engineering, Tianjin University, Tianjin, China

Corresponding author:Chen, X.(xchen@tju.edu.cn)

Source title:ICEPT-HDP 2011 Proceedings - 2011 International Conference on Electronic Packaging Technology and High Density Packaging

Abbreviated source title:ICEPT-HDP Proc. - Int. Conf. Electron. Packag. Technol. High Density Packag.

Monograph title:ICEPT-HDP 2011 Proceedings - 2011 International Conference on Electronic Packaging Technology and High Density Packaging

Issue date:2011

Publication year:2011

Pages:1143-1147

Article number:6067029

Language:English

ISBN-13:9781457717680

Document type:Conference article (CA)

Conference name:2011 12th International Conference on Electronic Packaging Technology and High Density Packaging, ICEPT-HDP 2011

Conference date:August 8, 2011 - August 11, 2011

Conference location:Shanghai, China

Conference code:87399

Sponsor:Chinese Institute of Electronics; IEEE Compon., Packag., Manuf. Technol. Soc. (IEEE-CPMT)

Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States

Abstract:One of the most important steps in the manufacturing of laser diodes is bonding the chip onto some sort of sub-mount that allows the laser to be handled, durable electrical connections to be made, and heat to be conducted away from the laser itself. The ability to conduct heat away from the laser is critical in keeping operating temperatures low, thus improving the laser's performance and its lifetime. In this study, it's the first time to use nano-scale silver paste as a die-attach material for die bonding the laser diodes. Numerous tests have been carried out to check the silver paste packaged laser's performance, including electrical properties, spectral properties, far-field characteristics, thermal rollover characteristics and so on. The test results show that as a new interconnecting material, nano-silver paste has the potential to eliminate the deficiencies of the existing solders. &copy; 2011 IEEE.

Number of references:10

Main heading:Semiconductor lasers

Controlled terms:Chip scale packages - Dies - Electric connectors - Electric properties - Manufacture - Nanotechnology - Packaging - Semiconductor diodes - Silver

Uncontrolled terms:Die bonding - Die-attach materials - Electrical connection - Far-field - Nano scale - Nano silver - Operating temperature - Silver pastes - Single emitter - Spectral properties  - Thermal rollover

Classification code:714.2 Semiconductor Devices and Integrated Circuits - 706.2 Electric Power Lines and Equipment - 701.1 Electricity: Basic Concepts and Phenomena - 694.1 Packaging, General - 603.2 Machine Tool Accessories - 547.1 Precious Metals - 537.1 Heat Treatment Processes

DOI:10.1109/ICEPT.2011.6067029

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 64>

 

Accession number:20113614296319

Title:Design of bipod flexures for space mirror

Authors:Chu, Chang-Bo (1); Li, Ying-Cai (1); Chai, Wen-Yi (1); Fan, Xue-Wu (1)

Author affiliation:(1) Lab of Space Optics, Xi'an Institute of Optics and Precision Mechanics, CAS, Xi'an 710119, China; (2) Graduate School, Chinese Academy of Sciences, Beijing 100039, China

Corresponding author:Chu, C.-B.

Source title:Proceedings of SPIE - The International Society for Optical Engineering

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:8196

Monograph title:International Symposium on Photoelectronic Detection and Imaging 2011: Space Exploration Technologies and Applications

Issue date:2011

Publication year:2011

Article number:819620

Language:English

ISSN:0277786X

CODEN:PSISDG

ISBN-13:9780819488374

Document type:Conference article (CA)

Conference name:International Symposium on Photoelectronic Detection and Imaging 2011: Space Exploration Technologies and Applications

Conference date:May 24, 2011 - May 26, 2011

Conference location:Beijing, China

Conference code:86296

Sponsor:Chinese Society of Astronautics (CAS)

Publisher:SPIE, P.O. Box 10, Bellingham, WA 98227-0010, United States

Abstract:Bipod flexures are used in many high-precision space mirror mount applications. The flexures are used to provide moment isolation for the mirror to minimize surface figure distortion resulting from mount assembly error or distortion of the mount temperature-change-induced. In this paper, we developed a bipod flexure for the Zerodur primary mirror with diameter 520 mm and thickness 70 mm. The characteristic of the bipod flexure is the two-strip flexure on the top and bottom of each leg. By those, the bending stress in mirror resulting from the mount assembly is remarkably reduced. Thanking to a semi-open structure with small mouth and big stomach in the back and a six parts symmetrical honeycomb structure for the primary mirror, using the FEA (Finite Element Analysis) method we analyze that how the axial and circumferential locations of the three bipod flexures impact mirror surface figure and gain the better result after optimization. In the design of the detail bipod flexures, thickness of the blade is analyzed and compared; also we achieve an optimization design. The two results demonstrate that the bipod flexures could keep the precision of the mirror surface figure under the load of external force and thermal constraints and meanwhile they could keep stability of structure. &copy; 2011 SPIE.

Number of references:2

Main heading:Mirrors

Controlled terms:Design - Finite element method - Honeycomb structures - Mountings - Optimization - Space research

Uncontrolled terms:Assembly error - Bending stress - Bipod flexure - Circumferential location - External force - High-precision - Mirror mount - Mirror surfaces - Optimization design - Primary mirrors  - Space mirror - Surface figure - Thermal constraints - Zerodur

Classification code:921.6 Numerical Methods - 921.5 Optimization Techniques - 741.3 Optical Devices and Systems - 656.2 Space Research - 601.2 Machine Components - 408.2 Structural Members and Shapes - 408 Structural Design

DOI:10.1117/12.902227

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 65>

 

Accession number:20112114001760

Title:Millijoule pulse energy picosecond fiber chirped-pulse amplification system

Authors:Yang, Zhi (1); Hu, Xiaohong (1); Wang, Yishan (1); Zhang, Wei (1); Zhao, Wei (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Acad. of Sci., Xi'an 710119, China; (2) Graduate University of the Chinese Acad. of Sci., Beijing 100049, China

Corresponding author:Yang, Z.(yz2422@163.com)

Source title:Chinese Optics Letters

Abbreviated source title:Chin. Opt. Lett.

Volume:9

Issue:4

Issue date:April 2011

Publication year:2011

Article number:041401

Language:English

ISSN:16717694

Document type:Journal article (JA)

Publisher:Science Press, 18,Shuangqing Street,Haidian, Beijing, 100085, China

Abstract:The efficient generation of a 1.17-mJ laser pulse with 360 ps duration using an ytterbium (Yb)-doped fiber amplifier chain seeded by a homemade mode-locked fiber laser is demonstrated experimentally. A specially designed figure-of-eight fiber laser acts as the seed source of a chirped-pulse amplification (CPA) system and generates mode-locked pulses with hundreds of picosecond widths. Two kinds of large-mode-area (LMA) double-clad Yb-doped fibers are employed to construct the pre-amplifier and main amplifier. All of the adopted instruments help avoid severe nonlinearity in fibers to raise sub-nanosecond pulse energy with acceptable signal-to-noise ratio (SNR). The output spectrum of this fiber-based CPA system shows that amplified spontaneous emission (ASE) is suppressed to better than 30 dB, and the onset of stimulated Raman scattering is excluded. &copy; 2011 Chinese Optics Letters.

Number of references:18

Main heading:Mode-locked fiber lasers

Controlled terms:Amplification - Fiber amplifiers - Fibers - Pulse amplifiers - Pulse generators - Signal to noise ratio - Ytterbium

Uncontrolled terms:Adopted instruments - Amplified spontaneous emissions - Chirped pulse amplifications - Chirped-pulse amplification system - Doped fiber amplifier - Double-clad - In-fiber - Main amplifiers - Millijoule pulse - Mode-locked pulse  - Output spectrum - Picoseconds - Pre-amplifiers - Seed source - Severe nonlinearity - Signal to noise - Sub-nanosecond pulse - Yb-doped fibers

Classification code:812 Ceramics, Refractories and Glass - 744.4 Solid State Lasers - 744.1 Lasers, General - 817 Plastics and Other Polymers: Products and Applications - 716.1 Information Theory and Signal Processing - 713.1 Amplifiers - 547.2 Rare Earth Metals - 713.4 Pulse Circuits

DOI:10.3788/COL201109.041401

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

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Accession number:20113914361921

Title:Face sketch-photo synthesis under multi-dictionary sparse representation framework

Authors:Wang, Nannan (1); Gao, Xinbo (1); Tao, Dacheng (2); Li, Xuelong (3)

Author affiliation:(1) School of Electronic Engineering, Xidian University, Xi'an, China; (2) Faculty of Engineering and Information Technology, University of Technology, Sydney, Australia; (3) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Center for OPTical Imagery Analysis and Learning (OPTIMAL), Xi'an, China

Corresponding author:Wang, N.(wangnannan006@126.com)

Source title:Proceedings - 6th International Conference on Image and Graphics, ICIG 2011

Abbreviated source title:Proc. - Int. Conf. Image Graph., ICIG

Monograph title:Proceedings - 6th International Conference on Image and Graphics, ICIG 2011

Issue date:2011

Publication year:2011

Pages:82-87

Article number:6005537

Language:English

ISBN-13:9780769545417

Document type:Conference article (CA)

Conference name:6th International Conference on Image and Graphics, ICIG 2011

Conference date:August 12, 2011 - August 15, 2011

Conference location:Hefei, Anhui, China

Conference code:86574

Sponsor:National Natural Science Foundation of China; Chinese Academy of Science; Microsoft Research Asia; Xian Institute of Optics and Precision Mechanics of CAS; Anhui Crearo Technology Co., Ltd

Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States

Abstract:Sketch-photo synthesis is one of the important research issues of heterogeneous image transformation. Some available popular synthesis methods, like locally linear embedding (LLE), usually generate sketches or photos with lower definition and blurred details, which reduces the visual quality and the recognition rate across the heterogeneous images. In order to improve the quality of the synthesized images, a multi-dictionary sparse representation based face sketch-photo synthesis model is constructed. In the proposed model, LLE is used to estimate an initial sketch or photo, while the multi-dictionary sparse representation model is applied to generate the high frequency and detail information. Finally, by linear superimposing, the enhanced face sketch or photo can be obtained. Experimental results show that sketches and photos synthesized by the proposed method have higher definition and much richer detail information resulting in a higher face recognition rate between sketches and photos. &copy; 2011 IEEE.

Number of references:22

Main heading:Face recognition

Uncontrolled terms:Face recognition rates - High frequency - Image transformations - Locally linear embedding - Multi-dictionary - Recognition rates - Research issues - Sparse representation - Synthesis method - Synthesis models  - Synthesized images - Visual qualities

Classification code:716 Telecommunication; Radar, Radio and Television

DOI:10.1109/ICIG.2011.112

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 67>

 

Accession number:20112013983320

Title:Biased electric field analysis of a photoconductive antenna for terahertz generation

Authors:Yang, Jian (1); Fan, Wenhui (1); Xue, Bing (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, Shaanxi, China

Corresponding author:Fan, W.(fanwh@opt.ac.cn)

Source title:Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

Abbreviated source title:Nucl Instrum Methods Phys Res Sect A

Volume:637

Issue:1 SUPPL.

Issue date:May 1, 2011

Publication year:2011

Pages:S165-S167

Language:English

ISSN:01689002

CODEN:NIMAER

Document type:Conference article (CA)

Publisher:Elsevier, P.O. Box 211, Amsterdam, 1000 AE, Netherlands

Abstract:The development of terahertz (THz) science has been ongoing for decades. As such, the generation and detection of THz radiation tend to be advanced. Currently, there are two main approaches to detect THz radiation: free-space electro-optic sampling (FS-EOS) and photoconductive (PC) sampling. Among the generations, the photoconductive effect is significant in the amplitude of THz radiation, which is believed to be proportional to the magnitude of the inner electric field. In order to increase THz radiation by safely enhancing the biased electric field, simulations on the electric field distributions of several different antennas have been conducted during our research. As a result of comparing and analyzing the findings of the simulations, a specific antenna structure suitable for a much higher biased field has been designed. Furthermore, satisfactory THz radiation is expected from this antenna. &copy; 2010 Elsevier B.V. All rights reserved.

Number of references:4

Main heading:Terahertz waves

Controlled terms:Antennas - Electric field effects - Microwave antennas - Photoconductivity - Radiation

Uncontrolled terms:Antenna structures - Electric field analysis - Electric field distributions - Field distribution - Free-space electro-optic sampling - Photoconductive antennas - Photoconductive effect - Terahertz - Terahertz generation - THz radiation

Classification code:701.1 Electricity: Basic Concepts and Phenomena - 711 Electromagnetic Waves - 716 Telecommunication; Radar, Radio and Television

DOI:10.1016/j.nima.2010.02.048

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 68>

 

Accession number:20114014403109

Title:Canonical signed digit encoding based optimal design for FIR filters

Authors:Yue, Qi (1); Ma, Caiwen (1); Wang, Xin (1)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanic, Chinese Academy of Sciences, Xi'an, China

Corresponding author:Yue, Q.(yueqi6@163.com)

Source title:Proceedings of 2011 International Conference on Electronic and Mechanical Engineering and Information Technology, EMEIT 2011

Abbreviated source title:Proc. Int. Conf. Electron. Mech. Eng. Inf. Technol., EMEIT

Volume:2

Monograph title:Proceedings of 2011 International Conference on Electronic and Mechanical Engineering and Information Technology, EMEIT 2011

Issue date:2011

Publication year:2011

Pages:729-732

Article number:6023152

Language:English

ISBN-13:9781612840857

Document type:Conference article (CA)

Conference name:2011 International Conference on Electronic and Mechanical Engineering and Information Technology, EMEIT 2011

Conference date:August 12, 2011 - August 14, 2011

Conference location:Harbin, China

Conference code:86793

Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States

Abstract:Based on Particle Swarm Optimization (PSO) Algorithm and Canonical Signed Digit (CSD) encoding, an optimal design method for FIR filters is presented in order to reduce the pass-band ripple and power consumption of the integrated circuits. For the slow convergence and invalidate CSD encoding accompanying with the update and mutation operations in PSO, some solutions are given. Simulation results show that the pass-band ripple is reduced and faster convergence is obtained. Applied in the design of cascade filter, the proposed algorithm can greatly reduce the pass-band ripple. &copy; 2011 IEEE.

Number of references:7

Main heading:FIR filters

Controlled terms:Algorithms - Bandpass filters - Convergence of numerical methods - Design - Encoding (symbols) - Information technology - Mechanical engineering - Optimal systems - Particle swarm optimization (PSO)

Uncontrolled terms:Canonical signed digits - Faster convergence - Mutation operations - Optimal design - Optimal design methods - Particle Swarm Optimization Algorithm - Pass bands

Classification code:961 Systems Science - 921.6 Numerical Methods - 921 Mathematics - 903 Information Science - 723.2 Data Processing and Image Processing - 723 Computer Software, Data Handling and Applications - 703.2 Electric Filters - 608 Mechanical Engineering, General - 408 Structural Design

DOI:10.1109/EMEIT.2011.6023152

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 69>

 

Accession number:20111913972248

Title:A low power adaptive clock and data recovery circuit for wireless implantable systems

Authors:Yu, Hang (1); Li, Yan (1); Jiang, Lai (1); Ji, Zhen (1); Yan, Ping-Kun (2); Wang, Fei (3)

Author affiliation:(1) Shenzhen City Key Laboratory of Embedded System Design, College of Computer Science and Software Engineering, Shenzhen University, Shenzhen 518060, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (3) IBM Almaden Research Center, San Jose 95120, United States

Corresponding author:Ji, Z.(jizhen@szu.edu.cn)

Source title:Shenzhen Daxue Xuebao (Ligong Ban)/Journal of Shenzhen University Science and Engineering

Abbreviated source title:Shenzhen Daxue Xuebao (Ligong Ban)

Volume:28

Issue:2

Issue date:March 2011

Publication year:2011

Pages:143-146

Language:English

ISSN:10002618

CODEN:SDXLEX

Document type:Journal article (JA)

Publisher:Editorial Office of Journal of Shenzhen University, Shenzhen University, Shenzhen, 518060, China

Abstract:An extremely low power clock and data recovery circuit was designed for pulse position modulated input. Synchronized clock and data were recovered through converting the timing distance between pulses into voltage domain. The reference voltage required for data recovery was adaptively generated to extend the range of the input data rate. The design was validated using 0.25 &mu;m CMOS technology. With 45.5 kbits/s input data, the entire circuit only consumes less than 13 &mu;W of power.

Number of references:10

Main heading:Metal recovery

Controlled terms:Charge pump circuits - Clocks - CMOS integrated circuits - Design - Electric power supplies to apparatus - Input output programs - Integrated circuits - Jitter - Metallic compounds - MOS devices  - Optical pumping - Packet switching - Pulse modulation - Pulse position modulation - Pumps - Transistors

Uncontrolled terms:Charge pump - Clock and data recovery - CMOS technology - Complementary metal oxide semiconductor(CMOS) - Data recovery - Implantable system - Input datas - Low Power - Low power clock - Low-power design  - Pulse position modulated - Reference voltages - Synchronized clocks - Voltage domains

Classification code:943.3 Special Purpose Instruments - 804.1 Organic Compounds - 741.1 Light/Optics - 723.1 Computer Programming - 716 Telecommunication; Radar, Radio and Television - 715.2 Industrial Electronic Equipment - 714.2 Semiconductor Devices and Integrated Circuits - 703.1 Electric Networks - 618.2 Pumps - 531 Metallurgy and Metallography - 408 Structural Design

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 70>

 

Accession number:20115214632538

Title:Local learning-based image super-resolution

Authors:Lu, Xiaoqiang (1); Yuan, Haoliang (2); Yuan, Yuan (1); Yan, Pingkun (1); Li, Luoqing (2); Li, Xuelong (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, Shaanxi, China; (2) Faculty of Mathematics and Computer Science, Hubei University, Wuhan 430062, Hubei, China

Corresponding author:Lu, X.

Source title:MMSP 2011 - IEEE International Workshop on Multimedia Signal Processing

Abbreviated source title:MMSP - IEEE Int. Workshop Multimedia Signal Process.

Monograph title:MMSP 2011 - IEEE International Workshop on Multimedia Signal Processing

Issue date:2011

Publication year:2011

Article number:6093843

Language:English

ISBN-13:9781457714337

Document type:Conference article (CA)

Conference name:3rd IEEE International Workshop on Multimedia Signal Processing, MMSP 2011

Conference date:November 17, 2011 - November 19, 2011

Conference location:Hangzhou, China

Conference code:87808

Sponsor:IEEE Signal Processing Society

Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States

Abstract:Local learning algorithm has been widely used in single-frame super-resolution reconstruction algorithm, such as neighbor embedding algorithm [1] and locality preserving constraints algorithm [2]. Neighbor embedding algorithm is based on manifold assumption, which defines that the embedded neighbor patches are contained in a single manifold. While manifold assumption does not always hold. In this paper, we present a novel local learning-based image single-frame SR reconstruction algorithm with kernel ridge regression (KRR). Firstly, Gabor filter is adopted to extract texture information from low-resolution patches as the feature. Secondly, each input low-resolution feature patch utilizes K nearest neighbor algorithm to generate a local structure. Finally, KRR is employed to learn a map from input low-resolution (LR) feature patches to high-resolution (HR) feature patches in the corresponding local structure. Experimental results show the effectiveness of our method. &copy; 2011 IEEE.

Number of references:14

Main heading:Learning algorithms

Controlled terms:Image reconstruction - Multimedia signal processing - Optical resolving power - Regression analysis

Uncontrolled terms:Embedding algorithms - Gabor filter - High resolution - Image super-resolution - K nearest neighbor algorithm - Local structure - Reconstruction algorithms - Ridge regression - Super-resolution reconstruction - Texture information

Classification code:723 Computer Software, Data Handling and Applications - 723.5 Computer Applications - 741 Light, Optics and Optical Devices - 741.1 Light/Optics - 922.2 Mathematical Statistics

DOI:10.1109/MMSP.2011.6093843

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 71>

 

Accession number:20113614296242

Title:Image enhancement techniques used for THz imaging

Authors:Liang, Yuqing (1); Fan, Wenhui (1); Xue, Bing (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China

Corresponding author:Fan, W.(fanwh@opt.ac.cn)

Source title:Proceedings of SPIE - The International Society for Optical Engineering

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:8195

Monograph title:International Symposium on Photoelectronic Detection and Imaging 2011: Terahertz Wave Technologies and Applications

Issue date:2011

Publication year:2011

Article number:1

Language:English

ISSN:0277786X

CODEN:PSISDG

ISBN-13:9780819488367

Document type:Conference article (CA)

Conference name:International Symposium on Photoelectronic Detection and Imaging 2011: Terahertz Wave Technologies and Applications

Conference date:May 24, 2011 - May 26, 2011

Conference location:Beijing, China

Conference code:86295

Sponsor:Chinese Society of Astronautics (CAS)

Publisher:SPIE, P.O. Box 10, Bellingham, WA 98227-0010, United States

Abstract:Terahertz (THz) radiation has been widely applied in the areas of spectroscopy, sensing and imaging. With the advancement of THz technologies, THz imaging has been progressed significantly and has huge potential applications in medical diagnosis, environmental control, chemical and biological identification. In the past, people mainly focused on overcoming the obstacles in the hardware, such as the limitation of resolution, accuracy and speed in THz imaging system. In this paper, image enhancement techniques are employed to enhance the contrast and get the better profile of THz image. Our results clearly demonstrate that digital image processing techniques can suppress noise effectively, extract target edges robustly, and therefore improve the quality of THz image. &copy; 2011 SPIE.

Number of references:17

Main heading:Medical imaging

Controlled terms:Diagnosis - Digital image storage - Image enhancement - Imaging systems - Terahertz spectroscopy - Terahertz wave detectors - Terahertz waves

Uncontrolled terms:Biological identification - Digital image processing technique - Enhancement techniques - Environmental control - Potential applications - Sensing and imaging - Terahertz radiation - THz - THz imaging - THz technology

Classification code:931.1 Mechanics - 746 Imaging Techniques - 741.3 Optical Devices and Systems - 741 Light, Optics and Optical Devices - 732.2 Control Instrumentation - 711 Electromagnetic Waves - 461.6 Medicine and Pharmacology

DOI:10.1117/12.900775

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 72>

 

Accession number:20114414464782

Title:Application of SIFT feature extraction algorithm on the image registration

Authors:Liu, Jinxia (1); Qiu, Yuehong (1)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, CAS, Xi'an 710119, China

Corresponding author:Liu, J.(liu_jinxia@163.com)

Source title:Proceedings - IEEE 2011 10th International Conference on Electronic Measurement and Instruments, ICEMI 2011

Abbreviated source title:Proc. IEEE Int. Conf. Electron. Meas. Instruments, ICEMI

Volume:3

Monograph title:Proceedings - IEEE 2011 10th International Conference on Electronic Measurement and Instruments, ICEMI 2011

Issue date:2011

Publication year:2011

Pages:177-180

Article number:6037882

Language:English

ISBN-13:9781424481590

Document type:Conference article (CA)

Conference name:IEEE 2011 10th International Conference on Electronic Measurement and Instruments, ICEMI 2011

Conference date:August 16, 2011 - August 18, 2011

Conference location:Chengdu, China

Conference code:87064

Sponsor:IEEE Beijing Section; Chinese Institute of Electronics (CIE); National Natural Science Foundation of China; Computer Measurement Group

Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States

Abstract:Presents a high-accuracy image registration technique using SIFT and BBF. Conventional techniques of SIFT-based image registration are not very effective when searching for homonymy point-pairs, and eliminating mismatching. This paper proposes a technique to improve registration performance by BBF and RANSAC algorithm, BBF algorithm searches optimal homonymy point-pairs, and RANSAC algorithm eliminates mismatching. Experiments with real-world scenes demonstrate that the proposed method can reach a better precision and robustness, which outperforms previously proposed schemes, and makes possible to estimate image displacement with 0.01 pixel accuracy. &copy; 2011 IEEE.

Number of references:9

Main heading:Image matching

Controlled terms:Algorithms - Feature extraction - Image registration

Uncontrolled terms:BBF - Conventional techniques - High-accuracy - Image registration techniques - Kd-tree - RANSAC - RANSAC algorithm - Registration performance - SIFT Feature - Subpixel registration

Classification code:716 Telecommunication; Radar, Radio and Television - 723 Computer Software, Data Handling and Applications - 723.2 Data Processing and Image Processing - 921 Mathematics

DOI:10.1109/ICEMI.2011.6037882

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 73>

 

Accession number:20113614310384

Title:Spectral characteristics of chirped fiber Bragg gratings in large-mode-area fibers

Authors:Zhao, Baoyin (1); Duan, Kailiang (1); Zhao, Wei (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (2) Graduate University of Chinese Academy of Sciences, Beijing 100049, China

Corresponding author:Zhao, B.(joseph.zhao@opt.ac.cn)

Source title:Qiangjiguang Yu Lizishu/High Power Laser and Particle Beams

Abbreviated source title:Qiangjiguang Yu Lizishu

Volume:23

Issue:7

Issue date:July 2011

Publication year:2011

Pages:1794-1798

Language:English

ISSN:10014322

CODEN:QYLIEL

Document type:Journal article (JA)

Publisher:Editorial Office of High Power Laser and Particle Beams, P.O. Box 919-805, Mianyang, 621900, China

Abstract:A matrix method is extended to solve the multimode coupling differential equations, and thereby the spectral characteristics of the chirped Bragg gratings in large-mode-area fibers (LMA FBGs) are studied theoretically. Unlike those of Bragg gratings in single mode optical fibers (SM FBGs), the reflection spectra of chirped LMA FBGs contain self-coupling and co-coupling peaks of the existing modes. For the chirped LMA FBGs, the reflectivity decreases and the reflection peaks split. These splits can be improved on some degree by Gaussian apodization function.

Number of references:14

Main heading:Fiber Bragg gratings

Controlled terms:Differential equations - Fibers - Multimode fibers - Optical fiber coupling - Optical waveguides - Pulse amplifiers

Uncontrolled terms:Apodization function - Chirped Bragg grating - Chirped fiber Bragg grating - Chirped LMA FBG - Coupled mode theory - Gaussians - Large mode area fiber - Matrix methods - Multimode couplings - Reflection peaks  - Reflection spectra - Single-mode optical fiber - Spectral characteristics

Classification code:817 Plastics and Other Polymers: Products and Applications - 812 Ceramics, Refractories and Glass - 741.3 Optical Devices and Systems - 921.2 Calculus - 741.1.2 Fiber Optics - 717 Optical Communication - 713.1 Amplifiers - 717.2 Optical Communication Equipment

DOI:10.3788/HPLPB20112307.1794

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 74>

 

Accession number:20113214224372

Title:Optical image operation based on holographic polarization multiplexing of fulgide film

Authors:Wang, Yingli (1); Yao, Baoli (1); Menke, Neimule (1); Chen, Yi (2); Fan, Meigong (2)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (2) Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100101, China

Corresponding author:Wang, Y.(wangyl@opt.ac.cn)

Source title:Chinese Optics Letters

Abbreviated source title:Chin. Opt. Lett.

Volume:9

Issue:SUPPL. 1

Issue date:June 2011

Publication year:2011

Pages:S10302

Language:English

ISSN:16717694

Document type:Journal article (JA)

Publisher:Science Press, 18,Shuangqing Street,Haidian, Beijing, 100085, China

Abstract:Fulgide, a kind of thermally irreversible photochromic compound, can be used for polarization holographic recording owing to its photoinduced anisotropy and photochromic property under the irradiation of linear polarization light. In this letter, a new technique of optical image operation based on the polarization multiplexing scheme in the fulgide film is demonstrated, which can implement the readout of two individual orthogonal polarized images separately and the subtraction or summation of the two images by simply rotating a polarizer in front of the charge-coupled device (CCD) detector. &copy; 2011 Chinese Optics Letters.

Number of references:12

Main heading:Polarization

Controlled terms:Geometrical optics - Image recording - Multiplexing - Optical recording - Photochromism

Uncontrolled terms:Charge coupled device detectors - Fulgides - Holographic recordings - Linear polarization - Optical image - Photo-induced anisotropy - Photochromic compound - Photochromic properties - Polarization multiplexing

Classification code:716 Telecommunication; Radar, Radio and Television - 717 Optical Communication - 718 Telephone Systems and Related Technologies; Line Communications - 741 Light, Optics and Optical Devices

DOI:10.3788/COL201109.S10302

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 75>

 

Accession number:20134316893751

Title:Clock drift-tolerant optical bit pattern monitoring technique in asynchronous undersampling system

Authors:Zhang, Huixing (1); Zhao, Wei (1)

Author affiliation:(1) Chinese Academy of Sciences, Xi'An Institute of Optics and Precision Mechanics, State Key Laboratory of Transient Optics and Photonics, No.17 Xinxi Road, Xi'an, 710119, China; (2) Graduate School of Chinese Academy of Sciences, Beijing 100039, China

Source title:Optical Engineering

Abbreviated source title:Opt Eng

Volume:50

Issue:10

Issue date:2011

Publication year:2011

Article number:105008

Language:English

ISSN:00913286

E-ISSN:15602303

CODEN:OPEGAR

Document type:Journal article (JA)

Publisher:SPIE, P.O. Box 10, Bellingham, WA 98227-0010, United States

Abstract:Based on an asynchronously undersampling system, we present a novel bit pattern monitoring technique in terms of its performance analysis and the implementation aspects. Relying upon an finite impulse response (FIR) filter assisted fine synchronization of the acquired samples, the technique can significantly reduce the random walk clock drift between data signal and sampling source compared to a conventional fine synchronization using a fixed time step. For the performance analysis of this technique, we first present an intuitive understanding of the principle of the FIR filter method under consideration of the filter frequency response. We find that the frequency response of the FIR filter simply serves to extract the spectral component at the aliasing frequency found in the periodogram and diminish all other frequency components. Then we test the tracking limit and discuss the optimized filter length choice of the new bit pattern monitoring technique through numerical examples. It turns out that the optimal filter length is chosen as the one which minimized the measured jitter and can be found iteratively. Finally, we present an experimental verification of this FIR bit pattern synchronization method by measuring and reconstructing bit patterns of 40 Gb/s nonreturn-to-zero and 160 Gb/s return-to-zero data signals, respectively. &copy; 2011 Society of Photo-Optical Instrumentation Engineers (SPIE).

Number of references:13

Main heading:Iterative methods

Controlled terms:Clocks - FIR filters - Frequency response - Monitoring - Numerical methods - Optical communication - Optical frequency conversion - Optimization - Synchronization

Uncontrolled terms:Asynchronous optical samplings - Bit patterns - Clock-drift tolerant - Experimental verification - Fine synchronizations - Implementation aspects - Intuitive understanding - Monitoring techniques

Classification code:944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments - 943.3 Special Purpose Instruments - 943 Mechanical and Miscellaneous Measuring Instruments - 942 Electric and Electronic Measuring Instruments - 941 Acoustical and Optical Measuring Instruments - 961 Systems Science - 921.6 Numerical Methods - 741.1.1 Nonlinear Optics - 717.1 Optical Communication Systems - 703.2 Electric Filters - 703.1 Electric Networks - 921.5 Optimization Techniques

DOI:10.1117/1.3640828

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

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Accession number:20113914362074

Title:Robust sparse tensor decomposition by probabilistic latent semantic analysis

Authors:Pang, Yanwei (1); Ma, Zhao (1); Pan, Jing (2); Yuan, Yuan (3)

Author affiliation:(1) School of Electronic Information Engineering, Tianjin University, Tianjin 300072, China; (2) School of Electronic Engineering, Tianjin University of Technology and Education, Tianjin 3000222, China; (3) State Key Laboratory of Transient Optics and Photonics, Center for OPTical IMagery Analysis and Learning (OPTIMAL), Xi'an Institute of Optics and Precision Mechanics, Xi'an 710119, Shaanxi, China

Corresponding author:Pang, Y.(pyw@tju.edu.cn)

Source title:Proceedings - 6th International Conference on Image and Graphics, ICIG 2011

Abbreviated source title:Proc. - Int. Conf. Image Graph., ICIG

Monograph title:Proceedings - 6th International Conference on Image and Graphics, ICIG 2011

Issue date:2011

Publication year:2011

Pages:893-896

Article number:6005968

Language:English

ISBN-13:9780769545417

Document type:Conference article (CA)

Conference name:6th International Conference on Image and Graphics, ICIG 2011

Conference date:August 12, 2011 - August 15, 2011

Conference location:Hefei, Anhui, China

Conference code:86574

Sponsor:National Natural Science Foundation of China; Chinese Academy of Science; Microsoft Research Asia; Xian Institute of Optics and Precision Mechanics of CAS; Anhui Crearo Technology Co., Ltd

Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States

Abstract:Movie recommendation system is becoming more and more popular in recent years. As a result, it is becoming increasingly important to develop machine learning algorithm on partially-observed matrix to predict users' preferences on missing data. Motivated by the user ratings prediction problem, we propose a novel robust tensor probabilistic latent semantic analysis (RT-pLSA) algorithm that not only takes time variable into account, but also uses the periodic property of data in time attribute. Different from the previous algorithms of predicting missing values on two-dimensional sparse matrix, we formulize the prediction problem as a probabilistic tensor factorization problem with periodicity constraint on time coordinate. Furthermore, we apply the Tsallis divergence error measure in the context of RT-pLSA tensor decomposition that is able to robustly predict the latent variable in the presence of noise. Our experimental results on two benchmark movie rating dataset: Netflix and Movielens, show a good predictive accuracy of the model. &copy; 2011 IEEE.

Number of references:15

Main heading:Tensors

Controlled terms:Forecasting - Learning algorithms - Motion pictures - Semantics

Uncontrolled terms:Data sets - Divergence error - Latent variable - matrix - Missing data - Missing values - Movie ratings - Movie recommendation - Periodic properties - Prediction problem  - Predictive accuracy - Probabilistic latent semantic analysis - Sparse matrices - Sparse representation - Tensor analysis - Tensor decomposition - Tensor factorization - Time coordinates - Time variable - Topic model  - User rating

Classification code:723 Computer Software, Data Handling and Applications - 742.1 Photography - 903.2 Information Dissemination - 921 Mathematics - 921.1 Algebra

DOI:10.1109/ICIG.2011.98

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 77>

 

Accession number:20110713659495

Title:A technology to generate arbitrary electrical waveform for shaping high power laser

Authors:Liu, H. (1); Liu, B.-Y. (1); Bai, Y.-L. (1); Gou, Y.-S. (1); Zheng, J.-K. (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (2) Graduate School of the Chinese, Academy of Sciences, Beijing 100049, China

Corresponding author:Liu, H.(liuhui3713@gmail.com)

Source title:Journal of Electromagnetic Waves and Applications

Abbreviated source title:J Electromagn Waves Appl

Volume:25

Issue:4

Issue date:January 1, 2011

Publication year:2011

Pages:495-506

Language:English

ISSN:09205071

E-ISSN:15693937

CODEN:JEWAE5

Document type:Journal article (JA)

Publisher:VSP BV, P.O.Box 9000, Leiden, 2300 PA, Netherlands

Abstract:In order to improve the output power of laser pulse in the inertia confinement fusion experiment, an arbitrary waveform generator is fabricated to shape the laser pulse. The arbitrary waveform generator is based on the micro-strip line transmission delay technology and GaAs Field Effect Transistor set which has a good ability of generating voltage-controlled current. To satisfy high amplitude requirement on electrical pulse for optical waveguide modulator, an ultra-broad bandwidth voltage tunable amplifier is applied to the output signals, and the pulse amplitude is adjustable. The designed generator generates a pulse waveform with amplitude between 0 and 5 V, duration less than 10 ns, 330 ps time-domain adjustment and a square pulse with rising edge 471 ps, falling edge 428 ps. The experiment results show the shaped laser pulse is obtained based on the shaping electrical pulse. &copy; 2011 VSP.

Number of references:23

Main heading:Pulse generators

Controlled terms:Field effect transistors - High power lasers - Laser pulses - Lasers - Light modulators - Waveform analysis

Uncontrolled terms:Arbitrary waveform generator - Broad bandwidths - Electrical pulse - Falling edge - Fusion experiments - GaAs - High amplitudes - Microstripes - Optical waveguide modulators - Output power  - Output signal - Pulse amplitude - Pulse waveforms - Shaped laser pulse - Square pulse - Time domain - Transmission delays - Voltage-controlled - Voltage-tunable - Wave forms

Classification code:713.4 Pulse Circuits - 714.2 Semiconductor Devices and Integrated Circuits - 741.3 Optical Devices and Systems - 744.1 Lasers, General - 921 Mathematics

DOI:10.1163/156939311794500287

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 78>

 

Accession number:20114214432387

Title:Generation of high-power tunable picosecond fiber laser

Authors:Liu, Hongjun (1); Gao, Cunxiao (1); Huang, Nan (1); Sun, Qibing (1); Long, Hanbo (1); Wen, Jin (1); Wang, Yishan (1); Zhao, Wei (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics Technology, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China

Corresponding author:Liu, H.(liuhongjun@opt.ac.cn)

Source title:Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering

Abbreviated source title:Hongwai yu Jiguang Gongcheng Infrared Laser Eng.

Volume:40

Issue:8

Issue date:August 2011

Publication year:2011

Pages:1438-1441

Language:Chinese

ISSN:10072276

Document type:Journal article (JA)

Publisher:Chinese Society of Astronautics, P.O. Box 225-32, Tianjin, 300192, China

Abstract:Generation technology of high-power tunable picosecond fiber laser based on the gain switch laser diode and Yb-doped fiber amplifier was experimentally studied. A gain switch laser diode was adopted as the seed source, and a multi-stage single mode Yb-doped fiber preamplifier was combined with two large mode area double-clad Yb-doped fiber main amplifiers to construct the amplification system. The gain compensation technology, tunable filter technology, Sagnac loop technology and cladding pump technology were also used in the high-power tunable fiber picosecond laser system. High stability and excellent beam quality (M² &lt; 1.2) pulses with 1MHz repetition rate, 10 W average power, 150ps pulse duration, 2.5-3 nm bandwidth (FWHM), and central wavelength tunable from 1053 nm to 1073 nm were generated. This system provides a compact, stable and reliable high-power tunable picosecond fiber laser source.

Number of references:11

Main heading:Fiber amplifiers

Controlled terms:Amplification - Amplifiers (electronic) - Diode amplifiers - Fibers - Pulse repetition rate - Pumping (laser) - Technology - Ytterbium

Uncontrolled terms:Average power - Central wavelength - Cladding pump - Compensation technology - Double-clad - Fiber laser source - Gain switch - Generation technologies - High stability - High-power  - Large mode area - Main amplifiers - Multi-stage - Picosecond laser - Picoseconds - Pulse durations - Repetition rate - Sagnac loop - Seed source - Single mode  - Tunable filters - Yb-doped fibers

Classification code:901 Engineering Profession - 817 Plastics and Other Polymers: Products and Applications - 812 Ceramics, Refractories and Glass - 744.4 Solid State Lasers - 744.1 Lasers, General - 713.1 Amplifiers - 547.2 Rare Earth Metals

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 79>

 

Accession number:20113914363022

Title:Spatially resolved X-ray spectroscopy using a flat HOPG crystal

Authors:Yuan, X.H. (1); Carroll, D.C. (1); Coury, M. (1); Gray, R.J. (1); Brenner, C.M. (1); Lin, X.X. (4); Li, Y.T. (4); Quinn, M.N. (1); Tresca, O. (1); Zielbauer, B. (3); Neely, D. (2); McKenna, P. (1)

Author affiliation:(1) SUPA, Department of Physics, University of Strathclyde, Glasgow G4 0NG, United Kingdom; (2) Central Laser Facility, Rutherford Appleton Laboratory, Oxfordshire OX11 0QX, United Kingdom; (3) PHELIX Department, Gesellschaft f&#252;r Schwerionenforschung MbH, Planckstrasse 1, D-64291 Darmstadt, Germany; (4) Beijing National Laboratory of Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China; (5) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China

Corresponding author:McKenna, P.(p.mckenna@phys.strath.ac.uk)

Source title:Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

Abbreviated source title:Nucl Instrum Methods Phys Res Sect A

Volume:653

Issue:1

Issue date:October 11, 2011

Publication year:2011

Pages:145-149

Language:English

ISSN:01689002

CODEN:NIMAER

Document type:Conference article (CA)

Publisher:Elsevier, P.O. Box 211, Amsterdam, 1000 AE, Netherlands

Abstract:A novel design of a 1-D imaging X-ray spectrometer is implemented, using a high efficiency HOPG (highly oriented pyrolitic graphite) Bragg crystal and a double-entrance-slit. The double slit provides self-calibration of the imaging magnification. The spatial and spectral resolutions and dispersion are characterised both analytically and by ray tracing simulations. A key feature of this approach is that it enables the X-ray spectrum to be measured over different regions of the plasma source. The application of this instrument is demonstrated in high intensity laserfoil interaction experiments. &copy; 2010 Elsevier B.V.

Number of references:12

Main heading:Spectrometers

Controlled terms:Beam plasma interactions - X ray spectroscopy

Uncontrolled terms:Bragg crystals - Double slits - High intensity - Highly oriented pyrolitic graphites - HOPG crystal - Imaging X-ray spectrometers - Key feature - Laser-plasma interactions - Novel design - Ray tracing simulation  - Self calibration - Spatially resolved - X ray spectrum

Classification code:801 Chemistry - 932.3 Plasma Physics

DOI:10.1016/j.nima.2010.12.147

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 80>

 

Accession number:20113814357633

Title:Rapid pedestrian detection in unseen scenes

Authors:Cao, Xianbin (1); Wang, Zhong (1); Yan, Pingkun (2); Li, Xuelong (2)

Author affiliation:(1) University of Science and Technology of China, Hefei, 230026, China; (2) Center for OPTical IMagery Analysis and Learning (OPTIMAL), State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, Shaanxi, China; (3) The BeiHang University, Beijing 100083, China

Corresponding author:Yan, P.(pingkun@ieee.org)

Source title:Neurocomputing

Abbreviated source title:Neurocomputing

Volume:74

Issue:17

Issue date:October 2011

Publication year:2011

Pages:3343-3350

Language:English

ISSN:09252312

E-ISSN:18728286

CODEN:NRCGEO

Document type:Journal article (JA)

Publisher:Elsevier, P.O. Box 211, Amsterdam, 1000 AE, Netherlands

Abstract:In this paper, a rapid adaptive pedestrian detection method based on cascade classifier with ternary pattern is proposed. The proposed method achieves its goal by employing the following three new strategies: (1) A method for adjusting the key parameters of the trained cascade classifier dynamically for detecting pedestrians in unseen scenes using only a small amount of labeled data from the new scenes. (2) An efficient optimization method is proposed, based on the cross entropy method and a priori knowledge of the scenes, to solve the classifier parameter optimization problem. (3) In order to further speed up pedestrian detection in unseen scenes, each strong classifier in the cascade employs a ternary detection pattern. In our experiments, two significantly different datasets, AHHF and NICTA, were used as the training set and testing set, respectively. The experimental results showed that the proposed method can quickly adapt a previously trained detector for pedestrian detection in various scenes compared with other existing methods. &copy; 2011 Elsevier B.V.

Number of references:32

Main heading:Detectors

Controlled terms:Entropy - Feature extraction - Optimization

Uncontrolled terms:Adaptive detectors - Cascade classifier - Cross entropy - Pedestrian detection system - Ternary detection pattern

Classification code:641.1 Thermodynamics - 716 Telecommunication; Radar, Radio and Television - 914 Safety Engineering - 921.5 Optimization Techniques

DOI:10.1016/j.neucom.2011.05.019

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 81>

 

Accession number:20112714121448

Title:Design and realization of photoelectric theodolite remote control system based on network

Authors:Peng, Wei (1); Yang, Xiao-Jun (1); Cao, Jian-Zhong (1)

Author affiliation:(1) Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Science, Xi'an 710019, China

Corresponding author:Peng, W.(pwhbyx@163.com)

Source title:2011 International Conference on Electric Information and Control Engineering, ICEICE 2011 - Proceedings

Abbreviated source title:Int. Conf. Electr. Inf. Control Eng., ICEICE - Proc.

Monograph title:2011 International Conference on Electric Information and Control Engineering, ICEICE 2011 - Proceedings

Issue date:2011

Publication year:2011

Pages:1281-1284

Article number:5778129

Language:English

ISBN-13:9781424480395

Document type:Conference article (CA)

Conference name:2011 International Conference on Electric Information and Control Engineering, ICEICE 2011

Conference date:April 15, 2011 - April 17, 2011

Conference location:Wuhan, China

Conference code:85257

Sponsor:IEEE Beijing Section ED Chapter; Jiangsu University

Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States

Abstract:A new way to design and realize a net-based photoelectronic theodolite remote control system is proposed. Analyzes the reliability, net delay and net security problems of this system and uses buffer technology to ensure the reliability, uses password authentication technology to solve the security problem, uses multicast technology to improve the efficiency of network transmission, uses data extrapolation to solve the network delay problem. Practical application shows that the system meets the design requirements and makes the equipment unattended. &copy; 2011 IEEE.

Number of references:5

Main heading:Photoelectricity

Controlled terms:Control systems - Design - Multicasting - Remote control

Uncontrolled terms:Data extrapolation - Design requirements - Multicast technology - Multicasts - Network delays - Network transmission - Password authentication - photoelectric theodolite - Security problems

Classification code:408 Structural Design - 716 Telecommunication; Radar, Radio and Television - 717 Optical Communication - 718 Telephone Systems and Related Technologies; Line Communications - 731.1 Control Systems - 741.1 Light/Optics

DOI:10.1109/ICEICE.2011.5778129

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 82>

 

Accession number:20111513904131

Title:Synthesis, crystal structure and photophysical properties of a neodymium trifluoroacetate complex with 2,2'-bipyridine

Authors:She, Jiangbo (1); Li, Dongdong (1); Hou, Chaoqi (1); Yang, Wenzheng (1); Wei, Wei (2); Peng, Bo (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences (CAS), Xi'an 710119, China; (2) Institute of Advanced Materials, Nanjing University of Posts and Telecommunications, Nanjing 210003, China

Corresponding author:Wei, W.(weiwei@njupt.edu.cn)

Source title:Journal of Rare Earths

Abbreviated source title:J Rare Earth

Volume:29

Issue:3

Issue date:March 2011

Publication year:2011

Pages:193-197

Language:English

ISSN:10020721

CODEN:JREAE6

Document type:Journal article (JA)

Publisher:Chinese Rare Earth Society, 2 Xinjiekouwai Dajie, Beijing, 100088, China

Abstract:The neodymium trifluoroacetate complexes were synthesized and characterized by single-crystal X-ray diffraction for [Nd(CF<inf>3</inf>COO) <inf>3</inf>&middotBpy&middot(H<inf>2</inf>O)<inf>3</inf>]Bpy (1), elemental and TG analysis, FT-IR spectra, and PL spectra for Nd(CF<inf>3</inf>COO) <inf>3</inf>&middotBpy (2) (Bpy: 2,2'-bipyridine). The most interesting feature of the crystal structure for 1 is that it comprises a coordinated 2,2'-bipyridine molecule and an out-sphere 2,2'-bipyridine molecule. At the same time, the C-O distances appeared average which indicates the three atoms of carboxylato forming electron-conjugate system. Hydrogen bond and p-p-stacking link the binuclear to two-dimensional sheet. The optical spectra for 2 exhibited that the complex possessed typical Nd (III) ion absorption and photoluminescence emission. The emission cross-section of ⁴F <inf>3/2</inf>&rarr⁴I<inf>11/2</inf> fluorescence transition (3.63&times;10^-20 cm²) was comparable with some laser glasses, which indicated good radiative properties of this neodymium trifluoroacetate complex in liquid matrix. The thermal analysis indicated that it was quite stable to heat. &copy; 2011 The Chinese Society of Rare Earths.

Number of references:22

Main heading:Crystal structure

Controlled terms:Glass lasers - Hydrogen - Hydrogen bonds - Luminescence - Neodymium - Rare earths - Spheres - Structural properties - Thermoanalysis - X ray diffraction

Uncontrolled terms:Bipyridines - Carboxylato - Conjugate systems - Emission cross-section - Fluorescence transitions - FT-IR spectrum - Ion absorption - Laser glass - Liquid matrix - Luminescent property  - Optical spectra - Photophysical properties - PL spectra - Radiative properties - Single crystal x-ray diffraction - Thermal analysis - Trifluoroacetates

Classification code:951 Materials Science - 931.3 Atomic and Molecular Physics - 804.2 Inorganic Compounds - 804 Chemical Products Generally - 801.4 Physical Chemistry - 801 Chemistry - 744.1 Lasers, General - 741.1 Light/Optics - 631 Fluid Flow - 547.2 Rare Earth Metals - 408 Structural Design

DOI:10.1016/S1002-0721(10)60429-2

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 83>

 

Accession number:20113614293326

Title:Photoreaction constants of fulgide films at different wavelengths

Authors:Du, Juan (1); Menke, Neimule (1); Yao, Baoli (2); Wang, Yingli (2); Chen, Yi (3)

Author affiliation:(1) School of Physical Science and Technology, Inner Mongolia Universtiy, Huhhot, 010021, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710068, China; (3) Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100101, China

Corresponding author:Menke, N.(py_menkenei@imu.edu.cn)

Source title:2011 International Conference on Remote Sensing, Environment and Transportation Engineering, RSETE 2011 - Proceedings

Abbreviated source title:Int. Conf. Remote Sens., Environ. Transp. Eng., RSETE - Proc.

Monograph title:2011 International Conference on Remote Sensing, Environment and Transportation Engineering, RSETE 2011 - Proceedings

Issue date:2011

Publication year:2011

Pages:6148-6154

Article number:5965760

Language:English

ISBN-13:9781424491711

Document type:Conference article (CA)

Conference name:2011 International Conference on Remote Sensing, Environment and Transportation Engineering, RSETE 2011

Conference date:June 24, 2011 - June 26, 2011

Conference location:Nanjing, China

Conference code:86226

Sponsor:Nanjing University of Information Science and Technology; Peking University; Fudan University; Tsinghua University; Jilin University

Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States

Abstract:Two kinds of synthesized photochromic fulgide - pyrrylfulgide (F1) and 3-indoly-benzylfulgimide (F2) - are prepared as thin films doped in a polymethyl methacrylate (PMMA) matrix. Under irradiation by 405nm laser, the films convert from the colorless E-form (bleached state) into the C-form (colored state). When the C-forms are irradiated by 488nm, 514nm, 633nm or 650nm laser, the films returns to the E-forms. The photochromic kinetics of them under the irradiation of different wavelength lights (405nm, 488nm, 514nm, 633nm and 650nm) and the two-beam complementary suppression curve of F2 film under the irradiation of 633nm and 405nm lights are experimentally measured, which are simulated by using the first order kinetics and numerical calculation methods and the best simulating values of the photoreaction constants are obtained and compared. Under the irradiation of 633nm light, the photoreaction constants of the bleaching progress in F1 and F2 films (&gamma;^C&rarrE <inf>633nm</inf>) are 1.4&times;10³ cm²/mJ and 2.89&times;103 cm2/mJ respectively. Under the irradiation of 488nm, 514nm and 650nm lights, the relative values of photoreaction constant &gamma; ^c&rarr/&gamma;^C&rarrE<inf>633nm</inf> are same with the theoretical values getting from the absorption spectra and &gamma;^E&rarrc<inf>F2,40fm</inf> =5.5&times;10⁴cm ²/m. The two-beam complementary suppression curves proved that &gamma; ^{C &rarrE}<inf>F2,633</inf> and &gamma; ^E&rarrc<inf>F2,405nm</inf> getting from the single beam irradiation curves are correct. And it is found that non-uniformity distribution of exciting light intensity has great affection to the deviation of the transmission curve from the first order dynamic curve. &copy; 2011 IEEE.

Number of references:11

Main heading:Photoreactivity

Controlled terms:Bleaching - Civil engineering - Cleaning - Irradiation - Numerical methods - Photochromism - Radiation - Remote sensing

Uncontrolled terms:3-indoly-benzylfulgimide - E-forms - First order - First order kinetics - Fulgides - Light intensity - matrix - Nonuniformity - Numerical calculation methods - Photochromic fulgide  - Photoreactions - Pyrrylfulgide - Relative value - Single beam - Theoretical values - Transmission curve

Classification code:921.6 Numerical Methods - 802.3 Chemical Operations - 802.2 Chemical Reactions - 741.1 Light/Optics - 731.1 Control Systems - 711 Electromagnetic Waves - 409 Civil Engineering, General

DOI:10.1109/RSETE.2011.5965760

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 84>

 

Accession number:20112614103086

Title:Design of large dimension and rear projecting lens in laser display system

Authors:Chen, Xu (1); Feng, Yu-Tao (3); Liu, Wei-Qi (1); Wei, Zhong-Lun (1); Kang, Yu-Si (1)

Author affiliation:(1) State Key Laboratory of Applied Optics, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China; (2) Graduate University of Chinese Academy of Sciences, Beijing 100049, China; (3) Key Laboratory of Spectral Imaging Technology of Chinese Academy of Sciences, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China

Corresponding author:Chen, X.(chxu2009@126.com)

Source title:Guangxue Jingmi Gongcheng/Optics and Precision Engineering

Abbreviated source title:Guangxue Jingmi Gongcheng

Volume:19

Issue:5

Issue date:May 2011

Publication year:2011

Pages:945-950

Language:Chinese

ISSN:1004924X

CODEN:GJGOF4

Document type:Journal article (JA)

Publisher:Chinese Academy of Sciences, 140 Renmin Street, Changchun, 130022, China

Abstract:After comparing different structures of wide-angle projecting lenses, a wide-angle lens for 162.6 cm(64 in) rear projection laser display is designed. The focal length of the system is 7.38 mm, the wavelength used in the design is F, d, C and the full field of view reaches 100&deg;. The technical indii of the projection lens are summarized as follows: DMD (Digital Micromirror Delice) is used in the light digital processing, 90% MTF is greater than 0.6 at the Nyquist frequency; the barrel distortion of the system is smaller than 1.4%, and 90% of the energy in the point target is focused in a pixel dimension. Furthermore, a right angle prism is used to fold the optical path to decrease the length of the lens, so that the whole optical length of the system is 259 mm after outspreading the right angle prism. The vignetting factor of the wide angle is negative, which enhances the image illumination after projection. Moreover, an aspheric surface with the small size, zero conic constant and the maximum eight order coefficient is used to promise the feasibility of the mounting. Analytical results show that the design can decrease the production costs of the projecting system and promote the technological industrialization.

Number of references:10

Main heading:Display devices

Controlled terms:Design - Lenses - Prisms

Uncontrolled terms:Analytical results - Aspheric surfaces - Barrel distortion - Different structure - Digital Micrmirror Device(DMD) - Digital micromirrors - Focal lengths - Full-field - Large dimensions - Laser display  - Laser display system - Nyquist frequency - Optical length - Optical path - Pixel dimension - Point targets - Production cost - Projection lens - Rear projection laser display system - Right angle prism  - Small size - Wide angle - Wide-angle lens

Classification code:408 Structural Design - 722.2 Computer Peripheral Equipment - 741.3 Optical Devices and Systems

DOI:10.3788/OPE.20111905.0945

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 85>

 

Accession number:20114214431743

Title:Compressed hyperspectral image sensing reconstruction based on interband prediction and joint optimization

Authors:Liu, Hai-Ying (1); Wu, Cheng-Ke (1); L&#252;, Pei (2); Song, Juan (1)

Author affiliation:(1) State Key Lab. of Integrated Service Networks, Xidian University, Xi'an 710071, China; (2) Xi'an Institute of Optics and Precision Mechanics of Chinese Acad. of Sci., Xi'an 710119, China

Corresponding author:Liu, H.-Y.(hyliu@mail.xidian.edu.cn)

Source title:Dianzi Yu Xinxi Xuebao/Journal of Electronics and Information Technology

Abbreviated source title:Dianzi Yu Xinxi Xuebao

Volume:33

Issue:9

Issue date:September 2011

Publication year:2011

Pages:2248-2252

Language:Chinese

ISSN:10095896

CODEN:DKXUEC

Document type:Journal article (JA)

Publisher:Science Press, 18,Shuangqing Street,Haidian, Beijing, 100085, China

Abstract:According to the correlation analysis of Compressed Sensing (CS) measurements for hyperspectral images, a new reconstruction algorithm based on interband prediction and joint optimization is proposed. In the method, linear prediction is first applied to remove the correlations among successive hyperspectral measurement vectors. The obtained residual measurement vectors are then recovered using the proposed joint optimization based POCS (Projections Onto Convex Sets) algorithm with the steepest descent method. In addition, a pixel-guided stopping criterion is introduced to stop the iteration. Experimental results show that the proposed algorithm exhibits its superiority over other known CS reconstruction algorithms in the literature at the same measurement rates, while with a faster convergence speed.

Number of references:16

Main heading:Forecasting

Controlled terms:Algorithms - Convergence of numerical methods - Independent component analysis - Optimization - Remote sensing - Set theory - Signal reconstruction - Steepest descent method

Uncontrolled terms:Compressive Sensing (CS) - Hyperspectral imagery - Linear prediction - Projections onto convex sets - Steepest descent

Classification code:716.1 Information Theory and Signal Processing - 723.4 Artificial Intelligence - 731.1 Control Systems - 921 Mathematics

DOI:10.3724/SP.J.1146.2010.01343

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 86>

 

Accession number:20112714112235

Title:Static imaging spectropolarimeter

Authors:Wang, Xin-Quan (1); Xiang, Li-Bin (2); Huang, Min (2); Hu, Liang (1); Jing, Juan-Juan (1)

Author affiliation:(1) Laboratory of Spectral Imaging Technique, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (2) Academy of Optoelectronics, Chinese Academy of Sciences, Beijing 100190, China; (3) Graduate University of Chinese Academy of Sciences, Beijing 100049, China

Corresponding author:Wang, X.-Q.(wangxinquan@opt.ac.cn)

Source title:Guangdianzi Jiguang/Journal of Optoelectronics Laser

Abbreviated source title:Guangdianzi Jiguang

Volume:22

Issue:5

Issue date:May 2011

Publication year:2011

Pages:689-692

Language:Chinese

ISSN:10050086

CODEN:GUJIE9

Document type:Journal article (JA)

Publisher:Board of Optronics Lasers, No. 47 Yang-Liu-Qing Ying-Jian Road, Tian-Jin City, 300380, China

Abstract:The principle and instrumental structure of static imaging spectropolarimeter which combines the amplitude modulation and spatially modulated imaging Fourier transform spectrometry technology are presented in this paper. A spectral-polarimetric modulator, which consists of achromatic quarter-wave retarder, multiple-order retarder and polarizer, modulated the Stokes componements of the input light into different wavenumbers, a spatially modulated imaging Fourier transform spectrometer after the spectral-polarimetric modulator got the modulated interferogram in snapshot mode, and the spectrum of the Stokes components could be separated and demodulated from the interferogram. The one dimension of spatial information and its full linear spectropolarimetric information could be acquired in one exposure by the imaging spectropolarimeter, and the other spatial information could be acquired in pushbroom mode.

Number of references:18

Main heading:Fourier transforms

Controlled terms:Amplitude modulation - Interferometry - Light modulators - Polarimeters - Polarographic analysis - Spectrometers - Spectrometry - Spectroscopy

Uncontrolled terms:Fourier transform spectrometry - Fourier transform spectroscopy - Input light - Interferograms - Modulated imaging - Multiple-order retarders - One dimension - Pushbroom - Quarter waves - Spatial informations  - Spectropolarimeters - Static imaging - Stokes component - Wave numbers

Classification code:716 Telecommunication; Radar, Radio and Television - 741.3 Optical Devices and Systems - 801 Chemistry - 921.3 Mathematical Transformations - 941.3 Optical Instruments - 941.4 Optical Variables Measurements

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 87>

 

Accession number:20114114423057

Title:Improved image registration based on SIFT features

Authors:Liu, Jinxia (1); Qiu, Yuehong (1)

Author affiliation:(1) Xi'An Institute of Optics and Precision Mechanics of CAS, Xi'an, China

Corresponding author:Liu, J.(liu_jinxia@163.com)

Source title:Proceedings 2011 International Conference on Mechatronic Science, Electric Engineering and Computer, MEC 2011

Abbreviated source title:Proc. Int. Conf. Mechatronic Sci., Electr. Eng. Comput., MEC

Monograph title:Proceedings 2011 International Conference on Mechatronic Science, Electric Engineering and Computer, MEC 2011

Issue date:2011

Publication year:2011

Pages:1047-1050

Article number:6025645

Language:English

ISBN-13:9781612847221

Document type:Conference article (CA)

Conference name:2011 International Conference on Mechatronic Science, Electric Engineering and Computer, MEC 2011

Conference date:August 19, 2011 - August 22, 2011

Conference location:Jilin, China

Conference code:86866

Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States

Abstract:SIFT (Scale-invariant feature detection) feature has been applied on image registration. However, how to achieve an ideal matching result and reduce the matching time are the most important steps that we study in our work. The original SIFT algorithm is famous for its abundant feature points, but the final keypoints are so excessive that the matching speed is very slow at the next step of searching for homonymy point-pairs. In this paper, we analyze the performance of SIFT and conquer its deficiencies applying RANSAC arithmetic and Least Squares Method in order to reach a perfect robustness and precision. Experiments with real-world scenes demonstrate that the method can reach a better precision and robustness, which outperforms previously proposed schemes. Compared with conventional localization algorithm, this method makes the precision more stable, which reaches 0.01 pixel, and also reduce the time of image registration. &copy; 2011 IEEE.

Number of references:8

Main heading:Image matching

Controlled terms:Algorithms - Electrical engineering - Image registration - Least squares approximations - Robustness (control systems)

Uncontrolled terms:Feature detection - Keypoints - Least squares methods - Localization algorithm - Matching speed - Scale-invariant - SIFT - SIFT Feature

Classification code:709 Electrical Engineering, General - 723 Computer Software, Data Handling and Applications - 723.2 Data Processing and Image Processing - 731.1 Control Systems - 921 Mathematics - 921.6 Numerical Methods

DOI:10.1109/MEC.2011.6025645

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 88>

 

Accession number:20112514078401

Title:Design of low-timing-jitter, stable picosecond optical-pulse source using an uncooled gain-switched Fabry-Perot semiconductor laser with external continuous-wave light injection

Authors:Liu, Yuanshan (1); Zhang, Jian-Guo (2)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710068, China; (2) Department of Engineering and Design, London South Bank University, London SE1 0AA, United Kingdom

Corresponding author:Zhang, J.-G.(zhangja@lsbu.ac.uk)

Source title:Microwave and Optical Technology Letters

Abbreviated source title:Microwave Opt Technol Lett

Volume:53

Issue:9

Issue date:September 2011

Publication year:2011

Pages:2100-2105

Language:English

ISSN:08952477

E-ISSN:10982760

CODEN:MOTLEO

Document type:Journal article (JA)

Publisher:John Wiley and Sons Inc., P.O.Box 18667, Newark, NJ 07191-8667, United States

Abstract:This paper presents the design of a low-timing-jitter, stable picosecond optical-pulse source, which is based on a low-cost, uncooled Fabry-Perot (FP) semiconductor laser in the gain-switching operation. The wavelength of the designed laser can be tuned from 1538 to 1554 nm under the condition of external continuous-wave (CW) light injection. The relationship between injection light power and timing jitter or between injection light power and pulse width of this gain-switched laser is studied experimentally. Our results show that the optical pulses with widths about 28 and 19 ps at the repetition frequencies of 2.5 and 5 GHz, respectively, are produced by an uncooled gain-switched FP semiconductor laser with timing jitter &le600 fs, when the injection power and wavelength of an external CW light are appropriately chosen. The use of a 500-m dispersion-compensation fiber can easily compress the optical pulses from 26 to 7.7 ps. Moreover, the stability of an uncooled gain-switched FP laser is experimentally investigated, and a stable optical-pulse train at 5 GHz can be feasibly produced over 7 h of continuously working. &copy; 2011 Wiley Periodicals, Inc.

Number of references:26

Main heading:Semiconductor lasers

Controlled terms:Fabry-Perot interferometers - Lasers - Light pulse generators - Timing jitter

Uncontrolled terms:External light injection - Gain-switched - Operation stability - Optical pulse sources - Pico-second pulse - Uncooled Fabry-Perot laser

Classification code:941.3 Optical Instruments - 744.4.1 Semiconductor Lasers - 744.1 Lasers, General - 741.1 Light/Optics - 718 Telephone Systems and Related Technologies; Line Communications - 717 Optical Communication - 716 Telecommunication; Radar, Radio and Television

DOI:10.1002/mop.26176

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 89>

 

Accession number:20113014178467

Title:Econdary optical lens designed in the method of source-target mapping

Authors:Wang, Guangzhen (1); Wang, Lili (1); Li, Lin (1); Wang, Doudou (1); Zhang, Yajun (3)

Author affiliation:(1) Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (2) Xi'An Jiaotong University, Xi'an 710049, China; (3) Beijing University of Chemical Technology, Beijing 100029, China

Corresponding author:Wang, L.(liliwang@opt.ac.cn)

Source title:Applied Optics

Abbreviated source title:Appl. Opt.

Volume:50

Issue:21

Issue date:July 20, 2011

Publication year:2011

Pages:4031-4036

Language:English

ISSN:1559128X

E-ISSN:15394522

CODEN:APOPAI

Document type:Journal article (JA)

Publisher:Optical Society of America, 2010 Massachusetts Ave, NW, Washington, DC, DC 20036-1023, United States

Abstract:A secondary optical lens was designed and investigated in three-dimensional (3D) space, which was far more accurate than a two-dimensional space in far-field lighting. The shape of the lens surface was from numerical solutions to a group of equations based on source-target mapping; calculating time was only 1:6 s. Neglecting absorption and scattering loss, the main results show that, for circular lighting, light efficiency can reach as high as 95%, and uniformity, which is the ratio of the minimum illuminance to average illuminance, is 92.2%. For rectangular lighting, light efficiency can reach 83.6% and uniformity can reach 66.7%. Performance of lenses under different parameters was studied to provide direct references for production and application. &copy; 2011 Optical Society of America.

Number of references:16

Main heading:Lighting

Controlled terms:Optical instrument lenses - Three dimensional

Uncontrolled terms:Calculating time - Far-field - Lens surface - Light efficiency - Numerical solution - Optical lens - Scattering loss - Three-dimensional (3D) space - Two dimensional spaces

Classification code:707 Illuminating Engineering - 741.3 Optical Devices and Systems - 902.1 Engineering Graphics

DOI:10.1364/AO.50.004031

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 90>

 

Accession number:20112514082944

Title:Optimization of high reflectivity measurement by cavity ring-down technique

Authors:Liu, Rong (1); Li, Xin (2); Hou, Honglu (1); Yang, Zhi (3); Bai, Jintao (4)

Author affiliation:(1) School of Photoelectric Engineering, Xi'an Technological University, Xi'an, China; (2) Dispatch Center, Xi'an Power Supply Bureau, Xi'an, China; (3) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, CAS, Xi'an, China; (4) Provincial Key Laboratory of Photoelectronic Technology, Northwest University, Xi'an, China

Corresponding author:Liu, R.(liurong0918@163.com)

Source title:2011 Symposium on Photonics and Optoelectronics, SOPO 2011

Abbreviated source title:Symp. Photonics Optoelectron., SOPO

Monograph title:2011 Symposium on Photonics and Optoelectronics, SOPO 2011

Issue date:2011

Publication year:2011

Article number:5780377

Language:English

ISBN-13:9781424465545

Document type:Conference article (CA)

Conference name:2011 Symposium on Photonics and Optoelectronics, SOPO 2011

Conference date:May 16, 2011 - May 18, 2011

Conference location:Wuhan, China

Conference code:85158

Sponsor:IEEE Photonics Society; IEEE Wuhan Section; Wuhan University; Optics and Photonics Society of Singapore; Shandong University

Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States

Abstract:The reflectivity of cavity mirror has a great influence on output power and conversion efficiency of laser. Based on pulsed cavity ring-down (CRD) technology, a single wavelength reflectivity measuring system is set up. Comparing the testing curves, the system, whose ring-down cavity is confocal cavity, could accurately determine the reflectivity of a mirror at the wavelength of 946nm. The average values of ring-down time are 1.5857&mu;s and 0.7950&mu;s respectively. The reflectivity of the concave cavity mirrors is to be 99.7900%, and that of the flat mirror to be 99.7910%, relative error achieves to 10^-5. Then the influence of the reflective metrical precision is studied with cavity parameters optimization and cavity length misadjustment. It is suggested that logarithm transformation of oscilloscope should be applied to adjust the optical cavity for improving metrical precision. The results will supply an effective instruct for improving intra-cavity frequency-doubling blue laser performance. &copy; 2011 IEEE.

Number of references:6

Main heading:Reflection

Controlled terms:Algebra - Conversion efficiency - Laser excitation - Light measurement - Mirrors - Optical testing - Optimization - Optoelectronic devices - Photonics

Uncontrolled terms:Average values - Blue lasers - Cavity length - Cavity mirror - Cavity parameters - Cavity ring-down - Concave cavity - Confocal cavity - CRD technology - Flat mirrors  - High reflectivity - Intra cavity frequency doubling - Measuring systems - Metrical precision - Optical cavities - Output power - Relative errors - Ring-down cavity - Single wavelength

Classification code:941.4 Optical Variables Measurements - 921.5 Optimization Techniques - 921.1 Algebra - 744.9 Laser Applications - 741.3 Optical Devices and Systems - 711 Electromagnetic Waves - 525.5 Energy Conversion Issues

DOI:10.1109/SOPO.2011.5780377

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 91>

 

Accession number:20112013987451

Title:Incipient fault detection for aero-engine rotor based on frequency compression of stochastic resonance

Authors:Wang, Guo-Fu (1); Zhang, Hai-Ru (1); Zhang, Fa-Quan (1); Ye, Jin-Cai (1)

Author affiliation:(1) School of Information and Communication Engineering, Guilin University of Electronic Technology, Guilin 541004, China; (2) Xi'an Institute Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China

Corresponding author:Wang, G.-F.(gfwang@opt.ac.cn)

Source title:Hangkong Dongli Xuebao/Journal of Aerospace Power

Abbreviated source title:Hangkong Dongli Xuebao

Volume:26

Issue:3

Issue date:March 2011

Publication year:2011

Pages:603-610

Language:Chinese

ISSN:10008055

CODEN:HDOXE5

Document type:Journal article (JA)

Publisher:BUAA Press, Xue-Yuan Road No.37, Beijing, 100083, China

Abstract:A frequency compression based on stochastic resonance (SR) for detecting incipient fault weak signal was presented because of the benefits of SR for detecting weak signals. The frequency limitation of SR was eliminated by introducing frequency compression. The incipient fault signal was detected from heavy noise under the condition of adiabatic approximation. Theoretical analysis and experiment results show that: to deal with the unknown incipient fault signals mixed with heavy noise, the mixed signal is compressed continuously to achieve a suitable frequency and then input to SR system. According to the change of resonance spectral peak value, the unknown incipient fault frequency can be obtained from heavy noise by inverse transform algorithm. Compared with traditional methods, the computing speed is increased by four magnitudes. The target signal is detected under -50 dB.

Number of references:16

Main heading:Fault detection

Controlled terms:Circuit resonance - Electric fault location - Magnetic resonance - Rotors - Signal detection - Stochastic systems

Uncontrolled terms:Aero-engine - Frequency compression - Incipient fault signal - Stochastic resonances - Weak signal detection

Classification code:601.2 Machine Components - 701.2 Magnetism: Basic Concepts and Phenomena - 703.1.1 Electric Network Analysis - 706.2 Electric Power Lines and Equipment - 716.1 Information Theory and Signal Processing - 961 Systems Science

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 92>

 

Accession number:20114114423436

Title:Digital implementation of a galvanometric optical scanner based on DSP and FPGA

Authors:Feng, Jing (1); Zhi, Jiang (2)

Author affiliation:(1) Photoelectric Measurement and Control Technology, Research Department, Xi'An Institute Optics and Precision Mechanics of CAS, Xi'an, China; (2) Test Station, Baicheng Weapon Test Center, Baicheng, China

Corresponding author:Feng, J.(yehe_feng@126.com)

Source title:Proceedings 2011 International Conference on Mechatronic Science, Electric Engineering and Computer, MEC 2011

Abbreviated source title:Proc. Int. Conf. Mechatronic Sci., Electr. Eng. Comput., MEC

Monograph title:Proceedings 2011 International Conference on Mechatronic Science, Electric Engineering and Computer, MEC 2011

Issue date:2011

Publication year:2011

Pages:1899-1902

Article number:6025857

Language:English

ISBN-13:9781612847221

Document type:Conference article (CA)

Conference name:2011 International Conference on Mechatronic Science, Electric Engineering and Computer, MEC 2011

Conference date:August 19, 2011 - August 22, 2011

Conference location:Jilin, China

Conference code:86866

Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States

Abstract:A galvanometric optical scanner in a laser marking system is controlled to achieve the demand of high speed and high accuracy. This paper presents a design of digital galvanometric optical scanner adopting a high-precision PID control algorithm with compensation based on repetitive control which is DSPFPGA-based architecture. This thesis consists of three parts including theory of laser marking system and galvanometer scanner construction, hardware design of DSPFPGA-based architecture, design and Simulation of scanning controller. &copy; 2011 IEEE.

Number of references:9

Main heading:Scanning

Controlled terms:Algorithms - Compensation (personnel) - Design - Electrical engineering - Field programmable gate arrays (FPGA) - Galvanometers - Laser recording - Laser theory - Marking machines - Three term control systems

Uncontrolled terms:DSP - high accuracy - PID - repeatability - USB

Classification code:942.1 Electric and Electronic Instruments - 921 Mathematics - 912.4 Personnel - 744.9 Laser Applications - 744.1 Lasers, General - 741.3 Optical Devices and Systems - 741.1 Light/Optics - 731.1 Control Systems - 723 Computer Software, Data Handling and Applications - 721.3 Computer Circuits - 709 Electrical Engineering, General - 601.1 Mechanical Devices - 408 Structural Design

DOI:10.1109/MEC.2011.6025857

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 93>

 

Accession number:20113214224377

Title:Study on the circuit producing high-speed pulse with high peak current

Authors:Yan, Deke (1); Gou, Yongsheng (1); Song, Zhiyuan (1); Sun, Chuandong (1); Zhu, Shaolan (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (2) Graduate University of Chinese Academy of Sciences, Beijing 100049, China

Corresponding author:Yan, D.(yandeke@opt.ac.cn)

Source title:Chinese Optics Letters

Abbreviated source title:Chin. Opt. Lett.

Volume:9

Issue:SUPPL. 1

Issue date:June 2011

Publication year:2011

Pages:S10307

Language:English

ISSN:16717694

Document type:Journal article (JA)

Publisher:Science Press, 18,Shuangqing Street,Haidian, Beijing, 100085, China

Abstract:To achieve high peak current with narrow pulse width, the circuit model is analyzed based on a fast and high-power metallic oxide semiconductor field effecttransistor (MOSFET) as the high speed switch of the resistor-capacitor (RC) charge and discharge circuits. It is easy to obtain a narrow high-current pulse by adopting the narrow triggering pulse to control the on-off state of the MOSFET switch, and using the driving pulse to modulate the exponential decay pulse in the RC discharge loop. The procedure for the high speed MOSFET switch is then discussed. To make the speed of the MOSFET switch as quick as possible, the push-pull driving circuit for the grid of the MOSFET is brought forward and the circuit for producing the narrow trigger pulse is designed. The experimental result shows that the full width at half maximum (FWHM) of the trigger pulse is about 500 ps when the narrow trigger pulse is connected with the discharge return circuit. Measured results demonstrate that the RC discharge loop produces a narrow high-current pulse, with a peak current of up to 92.5 A and FWHM of 6.2 ns. After adjusting relevant parameters, the peak current could reach up to 115.9 A. However, the corresponding pulse width is broadened. Finally, influencing factors on the narrow pulse width for the discharge loop are briefly analyzed. &copy; 2011 Chinese Optics Letters.

Number of references:8

Main heading:Electric network analysis

Controlled terms:Full width at half maximum - Metallic compounds - Metals - MOSFET devices - Power converters

Uncontrolled terms:Charge and discharge - Circuit models - Driving circuits - Driving pulse - Exponential decays - High-current pulse - High-peak currents - High-power - High-speed - High-speed switches  - Influencing factor - Measured results - Metallic oxides - MOS-FET - MOSFET switches - Narrow pulse widths - Peak currents - Pulse width - Resistor capacitors - Trigger pulse

Classification code:531 Metallurgy and Metallography - 703.1.1 Electric Network Analysis - 704.2 Electric Equipment - 714.2 Semiconductor Devices and Integrated Circuits - 804.1 Organic Compounds - 921 Mathematics

DOI:10.3788/COL201109.S10307

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 94>

 

Accession number:20115214632537

Title:Local semi-supervised regression for single-image super-resolution

Authors:Tang, Yi (1); Pan, Xiaoli (2); Yuan, Yuan (1); Yan, Pingkun (1); Li, Luoqing (2); Li, Xuelong (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, Shaanxi, China; (2) Faculty of Mathematics and Computer Science, Hubei University, Wuhan, 430062, Hubei, China

Corresponding author:Tang, Y.

Source title:MMSP 2011 - IEEE International Workshop on Multimedia Signal Processing

Abbreviated source title:MMSP - IEEE Int. Workshop Multimedia Signal Process.

Monograph title:MMSP 2011 - IEEE International Workshop on Multimedia Signal Processing

Issue date:2011

Publication year:2011

Article number:6093842

Language:English

ISBN-13:9781457714337

Document type:Conference article (CA)

Conference name:3rd IEEE International Workshop on Multimedia Signal Processing, MMSP 2011

Conference date:November 17, 2011 - November 19, 2011

Conference location:Hangzhou, China

Conference code:87808

Sponsor:IEEE Signal Processing Society

Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States

Abstract:In this paper, we propose a local semi-supervised learning-based algorithm for single-image super-resolution. Different from most of example-based algorithms, the information of test patches is considered during learning local regression functions which map a low-resolution patch to a high-resolution patch. Localization strategy is generally adopted in single-image super-resolution with nearest neighbor-based algorithms. However, the poor generalization of the nearest neighbor estimation decreases the performance of such algorithms. Though the problem can be fixed by local regression algorithms, the sizes of local training sets are always too small to improve the performance of nearest neighbor-based algorithms significantly. To overcome the difficulty, the semi-supervised regression algorithm is used here. Unlike supervised regression, the information about test samples is considered in semi-supervised regression algorithms, which makes the semi-supervised regression more powerful. Noticing that numerous test patches exist, the performance of nearest neighbor-based algorithms can be further improved by employing a semi-supervised regression algorithm. Experiments verify the effectiveness of the proposed algorithm. &copy; 2011 IEEE.

Number of references:23

Main heading:Learning algorithms

Controlled terms:Multimedia signal processing - Optical resolving power - Regression analysis - Supervised learning

Uncontrolled terms:High resolution - Learning-based algorithms - Local regression - Local training - Nearest neighbors - Regression algorithms - Semi-supervised - Super resolution - Test samples

Classification code:723 Computer Software, Data Handling and Applications - 741.1 Light/Optics - 922.2 Mathematical Statistics

DOI:10.1109/MMSP.2011.6093842

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 95>

 

Accession number:20113214224379

Title:Improvement methods of reflective photocathode QE of X-ray frame camera

Authors:Bai, Xiaohong (1); Bai, Yonglin (1); Cao, Zhurong (3); Zhao, Junping (1); Liu, Baiyu (1); Qin, Junjun (1); Wang, Bo (1); Yang, Wenzheng (1); Gou, Yongsheng (1); Ouyang, Xian (1)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics of CAS, Xi'an 710119, China; (2) Graduate University of Chinese Academy of Science, Beijing 100049, China; (3) Institute of Nuclear Physics and Chemistry, Chinese Academy of Engineering Physics, Mianyang 621900, China

Corresponding author:Bai, Y.(bxh@opt.ac.cn)

Source title:Chinese Optics Letters

Abbreviated source title:Chin. Opt. Lett.

Volume:9

Issue:SUPPL. 1

Issue date:June 2011

Publication year:2011

Pages:S10309

Language:English

ISSN:16717694

Document type:Journal article (JA)

Publisher:Science Press, 18,Shuangqing Street,Haidian, Beijing, 100085, China

Abstract:Time-resolved diagnosis of the transient process using X-ray frame cameras (XRCs) is an important means in inertial confinement fusion (ICF) experiments. The sensitivity of the photocathode is a key parameter of the entire camera system. This letter aims to raise the quantum efficiency (QE) of the photocathode. With the changes in the deposition parameters, such as deposit angle, thickness of the coating in the channel, and vacuum of evaporation, the QE results are different. After testing and theoretical calculation, we find that there is a best matching value among these parameters. When the coating parameter meet this best value, the gain of the XRC can be improved significantly. &copy; 2011 Chinese Optics Letters.

Number of references:11

Main heading:Photocathodes

Controlled terms:Cameras - Coatings - Inertial confinement fusion - Photoelectricity - Vacuum evaporation

Uncontrolled terms:Best value - Camera systems - Coating parameters - Deposition Parameters - Improvement methods - Key parameters - Theoretical calculations - Time-resolved - Transient process

Classification code:539 Metals Corrosion and Protection; Metal Plating - 539.3 Metal Plating - 621.2 Fusion Reactors - 741.1 Light/Optics - 741.3 Optical Devices and Systems - 742.2 Photographic Equipment

DOI:10.3788/COL201109.S10309

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 96>

 

Accession number:20112013986706

Title:Generation of rotating intensity blades by superposing optical vortex beams

Authors:Yang, Dexing (1); Zhao, Jinhu (1); Zhao, Teng (1); Kong, Lingchen (1)

Author affiliation:(1) Shaanxi Key Laboratory of Optical Information Technology, Northwestern Polytechnical University, Ministry of Education, Xi'an 710072, China; (2) State Key Laboratory of Transient Optics and Photonics, Chinese Academy of Sciences, Xi'an 710119, China

Corresponding author:Yang, D.(dxyang@nwpu.edu.cn)

Source title:Optics Communications

Abbreviated source title:Opt Commun

Volume:284

Issue:14

Issue date:July 1, 2011

Publication year:2011

Pages:3597-3600

Language:English

ISSN:00304018

CODEN:OPCOB8

Document type:Journal article (JA)

Publisher:Elsevier, P.O. Box 211, Amsterdam, 1000 AE, Netherlands

Abstract:A kind of optical beam with controllable rotating intensity blades is generated by coaxially superposing two optical vortex beams with frequency difference (&Delta;&omega;), different topological charges (m<inf>1</inf> and m<inf>2</inf>) and equal amplitude. It is shown theoretically that the number of the blades is determined by the subtraction of topological charges (m <inf>1</inf> - m<inf>2</inf>) and the angular velocity of the rotating pattern is equal to &Delta;&omega; / (m<inf>1</inf> - m<inf>2</inf>). In our experiment, the rotating beams were generated by two optical vortex beams with opposite topological charges, where the frequency difference is acquired by a rotating plate glass. The results are quite in accordance with the simulations. &copy; 2011 Elsevier B.V. All rights reserved.

Number of references:28

Main heading:Rotation

Controlled terms:Computer generated holography - Laser beams - Topology - Vortex flow

Uncontrolled terms:Computer holography - Laser beam combining - Laser beam shaping - Optical manipulation - Optical spanners

Classification code:601.1 Mechanical Devices - 631.1 Fluid Flow, General - 723.5 Computer Applications - 744.8 Laser Beam Interactions - 921.4 Combinatorial Mathematics, Includes Graph Theory, Set Theory

DOI:10.1016/j.optcom.2011.03.075

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 97>

 

Accession number:20120514730706

Title:Robust color correction in stereo vision

Authors:Wang, Qi (1); Yan, Pingkun (1); Yuan, Yuan (1); Li, Xuelong (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, Shaanxi, China

Corresponding author:Wang, Q.

Source title:Proceedings - International Conference on Image Processing, ICIP

Abbreviated source title:Proc. Int. Conf. Image Process. ICIP

Monograph title:ICIP 2011: 2011 18th IEEE International Conference on Image Processing

Issue date:2011

Publication year:2011

Pages:965-968

Article number:6116722

Language:English

ISSN:15224880

ISBN-13:9781457713033

Document type:Conference article (CA)

Conference name:2011 18th IEEE International Conference on Image Processing, ICIP 2011

Conference date:September 11, 2011 - September 14, 2011

Conference location:Brussels, Belgium

Conference code:88213

Sponsor:IEEE; IEEE Signal Processing Society

Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States

Abstract:The phenomenon of color discrepancy between image pairs happens frequently in stereo vision systems. This inconsistence in color domain may cause difficulties when identifying point correspondence to reconstruct the scene depth. In this paper, we propose a robust algorithm to correct the color discrepancy between images. The proposed algorithm neither requires a color calibration chart/object which is a tedious procedure, nor explicitly compensates for the image as a whole, which possibly give bad correction results in local areas of an image. Instead, we correct the image region by region. Experiments show that the presented color correction algorithm is effective and efficient. &copy; 2011 IEEE.

Number of references:14

Main heading:Stereo vision

Controlled terms:Algorithms - Color - Image processing

Uncontrolled terms:Color calibration - Color correction - Color domains - Image pairs - Image regions - Point correspondence - Robust algorithm - SIFT - Stereo vision system

Classification code:723 Computer Software, Data Handling and Applications - 723.5 Computer Applications - 741 Light, Optics and Optical Devices - 921 Mathematics

DOI:10.1109/ICIP.2011.6116722

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 98>

 

Accession number:20113614296285

Title:Compact equivalent-circuit model of LiNbO<inf>3</inf> modulator for passive millimeter wave imaging system

Authors:Qian, Feng-Chen (1); Xie, Xiao-Ping (1); Ye, Ya-Lin (3)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, 710119, China; (2) Chinese Academy of Sciences, Graduate University, Beijing, 100049, China; (3) Xi'an Communication Institute, Xi'an, 710106, China

Corresponding author:Qian, F.-C.

Source title:Proceedings of SPIE - The International Society for Optical Engineering

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:8196

Monograph title:International Symposium on Photoelectronic Detection and Imaging 2011: Space Exploration Technologies and Applications

Issue date:2011

Publication year:2011

Article number:81961L

Language:English

ISSN:0277786X

CODEN:PSISDG

ISBN-13:9780819488374

Document type:Conference article (CA)

Conference name:International Symposium on Photoelectronic Detection and Imaging 2011: Space Exploration Technologies and Applications

Conference date:May 24, 2011 - May 26, 2011

Conference location:Beijing, China

Conference code:86296

Sponsor:Chinese Society of Astronautics (CAS)

Publisher:SPIE, P.O. Box 10, Bellingham, WA 98227-0010, United States

Abstract:This paper presents a compact frequency-independent equivalent-circuit model for mmW characteristics of lithium niobate (LiNbO<inf>3</inf>) optical modulator, taking the skin effect, and substrate effect into consideration. Equivalent-circuit model with only ideal lumped elements represents the broadband electrical response of LiNbO<inf>3</inf> modulator. A 4-long ladder model is used to model the skin effect. Coupling capacitor is used to simulate the substrate coupling from the CPW to the buffer and LiNbO<inf>3</inf> substrate. Lumped-element circuit model was cascaded to model the distributive skin effect, transmission attenuation, and substrate effect. The equivalent-circuit models are fully SPICE compatible and can be incorporated directly into common circuit simulators and microwave design tools. &copy; 2011 SPIE.

Number of references:17

Main heading:SPICE

Controlled terms:Circuit theory - Coplanar waveguides - Electric conductors - Light modulators - Lithium - Niobium compounds - Skin effect - Space research - Substrates

Uncontrolled terms:Circuit simulators - Coupling capacitor - Electrical response - Equivalent-circuit model - Ladder model - LiNbO<inf>3</inf> modulator - Lithium niobate - Lumped element - Lumped-element circuit model - Microwave designs  - Passive millimeter wave imaging system - Shin effect - Substrate couplings - Substrate effect - Substrate effects

Classification code:801 Chemistry - 741.3 Optical Devices and Systems - 713 Electronic Circuits - 704.1 Electric Components - 804.1 Organic Compounds - 703.1.1 Electric Network Analysis - 656.2 Space Research - 549.1 Alkali Metals - 461 Bioengineering and Biology - 701.1 Electricity: Basic Concepts and Phenomena

DOI:10.1117/12.900869

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 99>

 

Accession number:20112814126690

Title:Tunable nonlinear frequency conversion of bismuth-tellurite glass holey fiber

Authors:Ryasnyanskiy, Aleksandr (1); Lin, Aoxiang (1); Guintrand, Cyril (1); Biaggio, Ivan (1); Toulouse, Jean (1)

Author affiliation:(1) Center for Optical Technologies, Physics Department, Lehigh University, Bethlehem, PA 18015, United States; (2) State Key Laboratory of Transient Optics, Photonics, Xi'an Institute of Optics and Precision Mechanics (XIOPM), Chinese Academy of Sciences (CAS), Xi'an 710119, China

Corresponding author:Ryasnyanskiy, A.(alr309@lehigh.edu)

Source title:2011 Optical Fiber Communication Conference and Exposition and the National Fiber Optic Engineers Conference, OFC/NFOEC 2011

Abbreviated source title:Opt. Fiber Commun. Conf. Expo. Natl. Fiber Opt. Eng. Conf., OFC/NFOEC

Monograph title:2011 Optical Fiber Communication Conference and Exposition and the National Fiber Optic Engineers Conference, OFC/NFOEC 2011

Issue date:2011

Publication year:2011

Article number:5875485

Language:English

ISBN-13:9781457702136

Document type:Conference article (CA)

Conference name:2011 Optical Fiber Communication Conference and Exposition and the National Fiber Optic Engineers Conference, OFC/NFOEC 2011

Conference date:March 6, 2011 - March 10, 2011

Conference location:Los Angeles, CA, United states

Conference code:85362

Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States

Abstract:We report on tunable parametric generation (PG) and third-harmonic generation (THG) in a 2.9-&mu;m core bismuth-tellurite holey glass fiber. The maximum conversion efficiency was measured to be 0.1% and 0.06% for PG and THG respectively. &copy; 2011 Optical Society of America.

Number of references:18

Main heading:Fibers

Controlled terms:Bismuth - Conversion efficiency - Engineers - Glass fibers - Holey fibers - Optical communication - Optical fibers - Optical frequency conversion - Tellurium compounds

Uncontrolled terms:Nonlinear frequency conversion - Parametric generation - Third-harmonic generation

Classification code:912.4 Personnel - 817 Plastics and Other Polymers: Products and Applications - 812 Ceramics, Refractories and Glass - 804.1 Organic Compounds - 741.1.2 Fiber Optics - 741.1.1 Nonlinear Optics - 717.1 Optical Communication Systems - 549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals - 525.5 Energy Conversion Issues

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 100>

 

Accession number:20120214676488

Title:Noise immunity research on the measurement method of image motion of the space camera based on optical correlator

Authors:Fan, Chao (1); Li, Ying-Cai (2); Jin, Ting (1); Fu, Hong-Liang (1)

Author affiliation:(1) College of Information Science and Engineering, Henan University of Technology, Zhengzhou 450001, China; (2) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China

Corresponding author:Fan, C.(anfan2003@gmail.com)

Source title:Yuhang Xuebao/Journal of Astronautics

Abbreviated source title:Yuhang Xuebao

Volume:32

Issue:12

Issue date:December 2011

Publication year:2011

Pages:2635-2641

Language:Chinese

ISSN:10001328

CODEN:YUXUD6

Document type:Journal article (JA)

Publisher:China Spaceflight Society, 2 Yuetan Beixiaojie, Beijing, 100830, China

Abstract:To research the influence of the noise on the measurement accuracy of the image motion of the space camera when using the optical joint transform correlator (JTC), the background noise and the pattern noise are added to the JTC respectively firstly. Then the measurement errors at different noise levels for the five kinds of different processing methods are emulated, and the validity of the image motion measured by the JTC is verified by an experimental platform. The results show that the measurement accuracy for the method of power spectrum subtraction and binaryzation with zero threshold is better compared with the other processing methods, the measurement error is no more than 0.12 pixel for the input image with SNR=1 and the background noise, thus meeting the operating requirement of the space camera completely.

Number of references:15

Main heading:Measurement errors

Controlled terms:Cameras - Measurements - Processing

Uncontrolled terms:Background noise - Experimental platform - Image motion - Input image - Measurement accuracy - Measurement methods - Noise - Noise immunity - Noise levels - Operating requirements  - Optical correlators - Optical joint transform correlator - Pattern noise - Power spectrum subtraction - Processing method - Space cameras

Classification code:944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments - 943 Mechanical and Miscellaneous Measuring Instruments - 942 Electric and Electronic Measuring Instruments - 941 Acoustical and Optical Measuring Instruments - 922 Statistical Methods - 913.4 Manufacturing - 742.2 Photographic Equipment

DOI:10.3873/j.issn.1000-1328.2011.12.025

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 101>

 

Accession number:20113614296289

Title:A comparative study on model-based pose estimation of flying objects with different feature descriptors

Authors:Tang, Hui-Jun (1); Wen, Jia (1); Ma, Cai-Wen (1); Zhou, Ren-Kui (1)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, CAS, Xi'an 710119, China; (2) Graduate School, Chinese Academy of Sciences, Beijing 100049, China; (3) School of Electronic and Information Engineering, Xi'an Jiaotong University, Xi'an 710049, China

Corresponding author:Tang, H.-J.(tanghj@opt.ac.cn)

Source title:Proceedings of SPIE - The International Society for Optical Engineering

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:8196

Monograph title:International Symposium on Photoelectronic Detection and Imaging 2011: Space Exploration Technologies and Applications

Issue date:2011

Publication year:2011

Article number:81961P

Language:English

ISSN:0277786X

CODEN:PSISDG

ISBN-13:9780819488374

Document type:Conference article (CA)

Conference name:International Symposium on Photoelectronic Detection and Imaging 2011: Space Exploration Technologies and Applications

Conference date:May 24, 2011 - May 26, 2011

Conference location:Beijing, China

Conference code:86296

Sponsor:Chinese Society of Astronautics (CAS)

Publisher:SPIE, P.O. Box 10, Bellingham, WA 98227-0010, United States

Abstract:Methods for pose estimation of flying objects are introduced. Among them is the model-based optical method. We focus on the feature description aspect in model-based method. Feature descriptors of chain codes, moments, Fourier descriptors are used for 2D silhouette or region description. Common issues and techniques, particularly representation and normalization, of such three kinds of descriptors in the application of model-based pose estimation are analyzed. We build a Matlab pose estimation framework to compare pose estimation procedures using different feature descriptors. A missile model of MilkShape 3D file format is created as the simulation object. Experiments concerning with the abilities of descriptors are proceeded to show the difference of these descriptors. &copy; 2011 SPIE.

Number of references:10

Main heading:Three dimensional

Controlled terms:Content based retrieval - Estimation - MATLAB - Space research

Uncontrolled terms:Chain codes - Feature descriptors - Fourier descriptors - Model-based - Moments - Normalization - Pose estimation

Classification code:656.2 Space Research - 741 Light, Optics and Optical Devices - 902.1 Engineering Graphics - 921 Mathematics

DOI:10.1117/12.900949

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 102>

 

Accession number:20104813434067

Title:Effect of polarization on the evolution of electromagnetic hollow Gaussian Schell-model beam

Authors:Long, Xuewen (1); Lu, Keqing (1); Zhang, Yuhong (1); Guo, Jianbang (1); Li, Kehao (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (2) Graduate School of Chinese Academy of Sciences, Beijing 100039, China

Corresponding author:Lu, K.(keqinglu@opt.ac.cn)

Source title:Optics Communications

Abbreviated source title:Opt Commun

Volume:284

Issue:3

Issue date:February 1, 2011

Publication year:2011

Pages:715-718

Language:English

ISSN:00304018

CODEN:OPCOB8

Document type:Journal article (JA)

Publisher:Elsevier, P.O. Box 211, Amsterdam, 1000 AE, Netherlands

Abstract:Based on the theory of coherence, an analytical propagation formula for partially polarized and partially coherent hollow Gaussian Schell-model beams (HGSMBs) passing through a paraxial optical system is derived. Furthermore, we show that the degree of polarization of source may affect the evolution of HGSMBs and a tunable dark region may exist. For two special cases of fully coherent and partially coherent &delta;<inf>xx</inf> = &delta;<inf>yy</inf>, normalized intensity distributions are independent of the polarization of source. &copy; 2010 Elsevier B.V. All rights reserved.

Number of references:24

Main heading:Gaussian beams

Controlled terms:Coherent light - Gaussian distribution - Gaussian noise (electronic) - Optical systems - Polarization

Uncontrolled terms:Dark region - Degree of polarization - Gaussian Schell-model beams - Hollow Gaussian beam - Intensity distribution - Paraxial optical systems - Partially coherent - Propagation - Schell-model sources

Classification code:711 Electromagnetic Waves - 713 Electronic Circuits - 716 Telecommunication; Radar, Radio and Television - 741.1 Light/Optics - 741.3 Optical Devices and Systems - 922.1 Probability Theory

DOI:10.1016/j.optcom.2010.09.078

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 103>

 

Accession number:20114114424013

Title:Design of Topas microstructured fiber with ultra-flattened chromatic dispersion and high birefringence

Authors:Wang, Doudou (1); Wang, Lili (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Information road 17, Xi'an, Shaanxi, 710119, China; (2) Graduate University of Chinese Academy of Science, Beijing 100039, China

Corresponding author:Wang, L.(liliwang@opt.ac.cn)

Source title:Optics Communications

Abbreviated source title:Opt Commun

Volume:284

Issue:24

Issue date:December 1, 2011

Publication year:2011

Pages:5568-5571

Language:English

ISSN:00304018

CODEN:OPCOB8

Document type:Journal article (JA)

Publisher:Elsevier, P.O. Box 211, Amsterdam, 1000 AE, Netherlands

Abstract:A microstructured polymer optical fiber (mPOF) with both ultra-flattened near-zero chromatic dispersion and high birefringence based on Topas cyclic olefin copolymer is designed. Three rings of uniform elliptical air holes are arranged in triangular lattice in the cladding and an extra small defected hole is introduced in the fiber core. Guided modes, dispersion, birefringence and mode confinement properties of the designed mPOF are investigated by using the full-vector finite element method. Dispersion values between &plusmn; 0.5 ps/km/nm over the wavelength 1.1-1.7 &mu;m and high birefringence of the order of 10^-3 are obtained for the optimized fiber structure. Low confinement losses and small effective mode area are obtained at the same time. The relatively simple architecture of the proposed Topas mPOF can be fabricated by our extrusion-stretching techniques. &copy; 2011 Elsevier B.V. All rights reserved. &copy; 2011 Elsevier B.V. All rights reserved.

Number of references:21

Main heading:Dispersion (waves)

Controlled terms:Birefringence - Chromatic dispersion - Dispersions - Fibers - Finite element method - Olefins - Optical fiber fabrication - Optical fibers

Uncontrolled terms:Air holes - Confinement loss - Confinement properties - Cyclic Olefin Copolymers - Effective mode areas - Fiber cores - Fiber structures - Guided modes - High birefringence - Microstructured fibers  - Microstructured polymer optical fibers - Microstructured polymer optical fibers (mPOF) - Topas COC - Triangular lattice - Ultra-flattened chromatic dispersion

Classification code:921.6 Numerical Methods - 817 Plastics and Other Polymers: Products and Applications - 812 Ceramics, Refractories and Glass - 951 Materials Science - 804.1 Organic Compounds - 741.1 Light/Optics - 711.1 Electromagnetic Waves in Different Media - 741.1.2 Fiber Optics

DOI:10.1016/j.optcom.2011.08.040

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 104>

 

Accession number:20120514730322

Title:Putting images on a manifold for atlas-based image segmentation

Authors:Cao, Yihui (1); Yuan, Yuan (1); Li, Xuelong (1); Yan, Pingkun (1)

Author affiliation:(1) Center for OPTical IMagery Analysis and Learning (OPTIMAL), State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Xi'an 710119, Shaanxi, China

Corresponding author:Cao, Y.

Source title:Proceedings - International Conference on Image Processing, ICIP

Abbreviated source title:Proc. Int. Conf. Image Process. ICIP

Monograph title:ICIP 2011: 2011 18th IEEE International Conference on Image Processing

Issue date:2011

Publication year:2011

Pages:289-292

Article number:6116265

Language:English

ISSN:15224880

ISBN-13:9781457713033

Document type:Conference article (CA)

Conference name:2011 18th IEEE International Conference on Image Processing, ICIP 2011

Conference date:September 11, 2011 - September 14, 2011

Conference location:Brussels, Belgium

Conference code:88213

Sponsor:IEEE; IEEE Signal Processing Society

Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States

Abstract:In medical image analysis, atlas-based segmentation has become a popular approach. Given a target image, how to select the atlases with the similar shape of anatomical structure to the input image is one of the most critical factors affecting the segmentation accuracy. In this paper, we propose a novel strategy by putting the images on a manifold to analyze the intrinsic similarity between the images. A subset of atlases can be selected and the optimal fusion weights are computed in a low-dimensional manifold space. Finally, it combines the selected atlases by using the corresponding weights for image segmentation. The experimental results demonstrated that our proposed method is robust and accurate especially when a large number of training samples are available. &copy; 2011 IEEE.

Number of references:10

Main heading:Image segmentation

Controlled terms:Fusion reactions - Medical imaging

Uncontrolled terms:Anatomical structures - atlas-based - Atlas-based segmentation - Corresponding weights - Critical factors - Input image - Low-dimensional manifolds - Manifold learning - Medical image analysis - Novel strategies  - Optimal fusion - Segmentation accuracy - Target images - Training sample

Classification code:621.2 Fusion Reactors - 741 Light, Optics and Optical Devices - 741.1 Light/Optics - 746 Imaging Techniques

DOI:10.1109/ICIP.2011.6116265

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 105>

 

Accession number:20114314447218

Title:Comparison of supercontinuum generation based on high-energy nanosecond pulses via single-mode and photonic-crystal fibers

Authors:Duan, L.N. (1); Liu, X.M. (1); Wang, L.R. (1); Mao, D. (1); Wang, G.X. (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xian Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xian 710119, China

Corresponding author:Duan, L.N.

Source title:Laser Physics

Abbreviated source title:Laser Phys.

Volume:21

Issue:10

Issue date:October 2011

Publication year:2011

Pages:1813-1819

Language:English

ISSN:1054660X

E-ISSN:15556611

Document type:Journal article (JA)

Publisher:Maik Nauka-Interperiodica Publishing, Profsoyuznaya Ul 90, Moscow, 117997, Russia

Abstract:We have experimentally investigated the supercontinuum (SC) generation based on high-energy Gaussian-spectrum pulses emitted from an erbium-doped fiber laser with large-anomalous dispersion. The pulses exhibit rectangular shape in temporal domain with the pulse duration of about 16 ns. When the amplified pulses propagate through 10-km single-mode fiber, the SC ranged from 1530 to 1750 nm arises from the stimulated-Raman-scattering effect and the pulses break up due to the modulation instability. Comparatively, when the amplified pulses propagate through a segment of highly-nonlinear zero-dispersion-flattened photonic crystal fiber, super-broad SC beyond the range of 1300-1750 nm is generated due to strong four-wave mixing effect, whereas the pulses almost maintain their shapes. &copy; 2011 Pleiades Publishing, Ltd.

Number of references:39

Main heading:Photonic crystal fibers

Controlled terms:Crystal whiskers - Dispersion (waves) - Erbium - Fiber lasers - Fibers - Four wave mixing - High energy physics - Photonic crystals - Single mode fibers

Uncontrolled terms:Amplified pulse - Erbium doped fiber laser - High energy - Modulation instabilities - Nanosecond pulse - Pulse durations - Rectangular shapes - Single mode - Supercontinuum generations - Temporal domain

Classification code:817 Plastics and Other Polymers: Products and Applications - 812 Ceramics, Refractories and Glass - 801.4 Physical Chemistry - 932.1 High Energy Physics - 741.3 Optical Devices and Systems - 711.1 Electromagnetic Waves in Different Media - 547.2 Rare Earth Metals - 741.1.2 Fiber Optics

DOI:10.1134/S1054660X11190091

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 106>

 

Accession number:20110813682028

Title:A 3D non-linear orientation prediction wavelet transform for interference hyperspectral images compression

Authors:Wen, Jia (1); Ma, Caiwen (1); Shui, Penglang (1)

Author affiliation:(1) Photoelectric Measurement and Control Technology Research Department, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, NO.17 Xinxi Road, Xi'an, Shaanxi, 710119, China; (2) School of Electronic and Information Engineering, Xi'An Jiaotong University, Xi'an, Shaanxi, 710049, China

Corresponding author:Wen, J.(b09033@opt.cn)

Source title:Optics Communications

Abbreviated source title:Opt Commun

Volume:284

Issue:7

Issue date:April 1, 2011

Publication year:2011

Pages:1770-1777

Language:English

ISSN:00304018

CODEN:OPCOB8

Document type:Journal article (JA)

Publisher:Elsevier, P.O. Box 211, Amsterdam, 1000 AE, Netherlands

Abstract:According to the characteristic of large aperture static interference imaging spectrometer (LASIS), a non-linear orientation prediction three-dimensional (3D) wavelet transform method is proposed in this paper on the basis of the 3D orientation prediction wavelet transform method proposed by Li, Ma and Wu in 2008 [1]. The method proposed in this paper still combines directional prediction into 3D lifting wavelet transformation, but compared with the 3D orientation prediction wavelet transform method, it made a breakthrough in the limitation that the orientation predicted must be a straight linear direction. The experimental results showed that this method improved the performance of wavelet obviously, especially on the LASIS image with quite severe and unstable directional characteristic as seen in the study of Ma and Ma (2009) [2]. Meanwhile, the characteristic of spectrum image recovered by the proposed method also possessed better performance. &copy; 2010 Elsevier B.V. All rights reserved.

Number of references:14

Main heading:Three dimensional

Controlled terms:Forecasting - Linear transformations - Mathematical transformations - Wavelet transforms

Uncontrolled terms:3D orientation - Directional characteristic - Hyper-spectral images - Large aperture - Lifting wavelet - Linear direction - Non-linear - Orientation prediction - Spectrum images - Static interference  - Three-dimensional (3D)

Classification code:902.1 Engineering Graphics - 921 Mathematics - 921.3 Mathematical Transformations

DOI:10.1016/j.optcom.2010.11.069

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 107>

 

Accession number:20113614296310

Title:The research of the high precision universal stable reconnaissance platform in near space

Authors:Yang, Hong-Tao (1); Cao, Jian-Zhong (1); Fan, Zhe-Yuan (1); Chen, Wei-Ning (1)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Science, Xian 710119, China; (2) Graduate School, Chinese Academy of Sciences, Beijing 10039, China

Corresponding author:Yang, H.-T.

Source title:Proceedings of SPIE - The International Society for Optical Engineering

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:8196

Monograph title:International Symposium on Photoelectronic Detection and Imaging 2011: Space Exploration Technologies and Applications

Issue date:2011

Publication year:2011

Article number:819611

Language:English

ISSN:0277786X

CODEN:PSISDG

ISBN-13:9780819488374

Document type:Conference article (CA)

Conference name:International Symposium on Photoelectronic Detection and Imaging 2011: Space Exploration Technologies and Applications

Conference date:May 24, 2011 - May 26, 2011

Conference location:Beijing, China

Conference code:86296

Sponsor:Chinese Society of Astronautics (CAS)

Publisher:SPIE, P.O. Box 10, Bellingham, WA 98227-0010, United States

Abstract:The appliance of military was recognized more and more ,It is important that pod can bear the weight of the availability payload achieve the observation to the earth in 20km-100km area and work in the all-weather. The stable platform can load high imaging spectrometer, the thermal infrared imager, the infrared radiometer, the millimeter waves radar, the laser weapon and so on, in order to realize reconnaissance and attacking integrative and warning the long-distant missile. The stabilization accuracy of platform is prior to 20&mu;rad and burden heavy load to the best of one's abilities. It used high precision velocity and acceleration gyroscope to fulfill the stabilization of the platform. Light-weight design by using new composite material and optimizing design. It was adapt to the near space environment better by structure design and simulation analysis. Enhance its basic frequency and sure the rigid of the frame platform .In addition, the structure of platform apply the two-axis and four-frame and use the method of FEA to fulfill the optimum design in order to attain the object of light-weight. In consider to the precision of the platform I establish the math model and make use of the monte carlo method to appraise and analysis the error that affect the precision of the platform. After emulating by the software of the Matlab to verify the results. It is apply the method that link the platform and aerocraft by mounting the no angular displacement shock absorbers on the elevator mechanism. This kind of design insulate the angular vibration and minish the linear vibration to ensure the image quality. &copy; 2011 SPIE.

Number of references:5

Main heading:Earth (planet)

Controlled terms:Availability - Design - Engineering research - Image quality - Mathematical models - MATLAB - Military applications - Monte Carlo methods - Radar imaging - Rigid structures  - Space research - Stabilization

Uncontrolled terms:Angular displacement - Angular vibrations - Heavy loads - High precision - Imaging spectrometers - Infra-red radiometers - Laser weapons - Light weight - Lightweight design - Linear vibrations  - Math model - Near space - Optimizing design - Optimum designs - Payload - Stable platform - Structure design - Thermal infrared imager - Two-axis

Classification code:951 Materials Science - 922.2 Mathematical Statistics - 921 Mathematics - 913.5 Maintenance - 901.3 Engineering Research - 741 Light, Optics and Optical Devices - 716.2 Radar Systems and Equipment - 657 Space Physics - 656.2 Space Research - 408 Structural Design - 404.1 Military Engineering

DOI:10.1117/12.900298

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 108>

 

Accession number:20111513911254

Title:The novel stable control scheme of the light source power in the closed-loop fiber optic gyroscope

Authors:Ji, Zhongxiao (1); Ma, Caiwen (2)

Author affiliation:(1) Graduate University, Chinese Academy of Sciences, Beijing, China; (2) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, NO.17 Xinxi Rd., NI Pk., Xi'an Hi-Tech Indust. Devmt. Z., Xi'an, Shaanxi, China

Corresponding author:Ji, Z.(jzx@opt.ac.cn)

Source title:Journal of Physics: Conference Series

Abbreviated source title:J. Phys. Conf. Ser.

Volume:276

Issue:1

Monograph title:3rd International Photonics and OptoElectronics Meetings, POEM 2010

Issue date:2011

Publication year:2011

Article number:012127

Language:English

ISSN:17426588

E-ISSN:17426596

Document type:Conference article (CA)

Conference name:3rd International Photonics and OptoElectronics Meetings, POEM 2010

Conference date:November 2, 2010 - November 5, 2010

Conference location:Wuhan, China

Conference code:84489

Sponsor:Huazhong University of Science and Technology (HUST); China Hubei Provincial Science Technology Department (HBSTD); Wuhan East Lake National Innovation Model Park

Publisher:Institute of Physics Publishing, Temple Back, Bristol, BS1 6BE, United Kingdom

Abstract:The light source power stability of the Fiber-Optic Gyroscope (FOG) affects directly the scale factor and bias stability of FOG. The typical control scheme of the light source power employs an additional photodetector to detect the output power of the light source. When the fiber loss of FOG varied due to the temperature change, the light power in the additional photodetector did not indicate this change, which decreased the control effect. The spike pulse overlapping on the gyro signal denotes potentially the change of the light power and fiber loss. In the novel scheme, the spike pulse is extracted from the gyro signal, and is transformed into the square wave by the differential circuit. According to the change of the square wave amplitude, FOG adjusts the bias current of the light source to keep the stable light power in the signal photodetector. It is a simple and low-cost scheme without an additional photodetector.

Number of references:5

Main heading:Light sources

Controlled terms:Fibers - Fog - Gyroscopes - Optoelectronic devices - Photodetectors

Uncontrolled terms:Bias stability - Closed-loop - Control schemes - Differential circuits - Fiber loss - Fiber optic gyroscopes - Gyro signals - Light power - Output power - Power stability  - Pulse overlapping - Scale Factor - Square waves - Stable control - Temperature changes

Classification code:943.1 Mechanical Instruments - 817 Plastics and Other Polymers: Products and Applications - 812 Ceramics, Refractories and Glass - 744 Lasers - 741.3 Optical Devices and Systems - 717.2 Optical Communication Equipment - 443.1 Atmospheric Properties

DOI:10.1088/1742-6596/276/1/012127

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 109>

 

Accession number:20113314229664

Title:Gaseous ammonia fluorescence probe based on cellulose acetate modified microstructured optical fiber

Authors:Peng, Lirong (1); Yang, Xinghua (1); Yuan, Libo (1); Wang, Lili (2); Zhao, Enming (1); Tian, Fengjun (1); Liu, Yanxin (1)

Author affiliation:(1) Heilongjiang Provincial Key Laboratory of Optical Fiber Sensor, College of Science, Harbin Engineering University, No. 145, Nantong Road, Harbin 150001, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Information Road 17, Xi'an, Shannxi 710119, China

Corresponding author:Yang, X.(Yangxh@hrbeu.edu.cn)

Source title:Optics Communications

Abbreviated source title:Opt Commun

Volume:284

Issue:19

Issue date:September 1, 2011

Publication year:2011

Pages:4810-4814

Language:English

ISSN:00304018

CODEN:OPCOB8

Document type:Journal article (JA)

Publisher:Elsevier, P.O. Box 211, Amsterdam, 1000 AE, Netherlands

Abstract:In this article, we report a novel fluorescent ammonia gas probe based on microstructured optical fiber (MOF) which is modified with eosin-doped cellulose acetate film. This probe was fabricated by liquid fluxion coating process. Polymer solution doped with eosin was directly inhaled into 18 array holes of MOF and then formed matrix film in them. The sensing properties of the optical fiber sensor to gaseous ammonia at room temperature were investigated. The sensing probe showed different fluorescence intensity at 576 nm to different concentrations of trace ammonia in carrier gas of nitrogen. The response range was 50-400 ppm, with short response time within 500 ms. Furthermore, the response range could be tailored through CTAB co-entrapment process in the sensing film. These test results demonstrated that low cost, simple structured fiber optic sensors for detecting ammonia gas samples could be developed based on MOF. &copy; 2011 Elsevier B.V.

Number of references:31

Main heading:Ammonia

Controlled terms:Cellulose - Coatings - Fiber optic sensors - Fibers - Fluorescence - Java programming language - Nitrogen - Optical fiber fabrication - Optical fibers - Probes  - Sensors - Volatile fatty acids

Uncontrolled terms:Ammonia gas - Carrier gas - Cellulose acetates - Coating process - Fluorescence intensities - Fluorescence probes - Gaseous ammonia - Low costs - matrix - Micro-structured optical fibers  - Optical fiber sensor - Optical sensing - Probe-based - Response range - Room temperature - Sensing films - Sensing probe - Sensing property - Short response time - Test results

Classification code:944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments - 943 Mechanical and Miscellaneous Measuring Instruments - 942 Electric and Electronic Measuring Instruments - 941 Acoustical and Optical Measuring Instruments - 817 Plastics and Other Polymers: Products and Applications - 815.1.1 Organic Polymers - 812 Ceramics, Refractories and Glass - 804 Chemical Products Generally - 801 Chemistry - 741.1.2 Fiber Optics - 741.1 Light/Optics - 723.1.1 Computer Programming Languages - 539 Metals Corrosion and Protection; Metal Plating

DOI:10.1016/j.optcom.2011.06.015

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 110>

 

Accession number:20111313857082

Title:Partially supervised neighbor embedding for example-based image super-resolution

Authors:Zhang, Kaibing (1); Gao, Xinbo (1); Li, Xuelong (2); Tao, Dacheng (3)

Author affiliation:(1) VIPS Lab., School of Electronic Engineering, Xidian University, Xi'an 710071, China; (2) State Key Laboratory of Transient Optics and Technology, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (3) School of Computer Engineering, Nanyang Technological University, Singapore 639798, Singapore

Corresponding author:Zhang, K.(kbzhang0505@gmail.com)

Source title:IEEE Journal on Selected Topics in Signal Processing

Abbreviated source title:IEEE J. Sel. Top. Sign. Proces.

Volume:5

Issue:2

Issue date:April 2011

Publication year:2011

Pages:230-239

Article number:5451103

Language:English

ISSN:19324553

Document type:Journal article (JA)

Publisher:Institute of Electrical and Electronics Engineers Inc., 445 Hoes Lane / P.O. Box 1331, Piscataway, NJ 08855-1331, United States

Abstract:Neighbor embedding algorithm has been widely used in example-based super-resolution reconstruction from a single frame, which makes the assumption that neighbor patches embedded are contained in a single manifold. However, it is not always true for complicated texture structure. In this paper, we believe that textures may be contained in multiple manifolds, corresponding to classes. Under this assumption, we present a novel example-based image super-resolution reconstruction algorithm with clustering and supervised neighbor embedding (CSNE). First, a class predictor for low-resolution (LR) patches is learnt by an unsupervised Gaussian mixture model. Then by utilizing class label information of each patch, a supervised neighbor embedding is used to estimate high-resolution (HR) patches corresponding to LR patches. The experimental results show that the proposed method can achieve a better recovery of LR comparing with other simple schemes using neighbor embedding. &copy; 2010 IEEE.

Number of references:35

Main heading:Optical resolving power

Controlled terms:Clustering algorithms - Image reconstruction - Textures

Uncontrolled terms:Class labels - Clustering - Embedding algorithms - example-based super-resolution - Gaussian Mixture Model - High resolution - Image super-resolution - supervised neighbor embedding - Texture structure

Classification code:721 Computer Circuits and Logic Elements - 741 Light, Optics and Optical Devices - 741.1 Light/Optics - 933 Solid State Physics

DOI:10.1109/JSTSP.2010.2048606

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 111>

 

Accession number:20112414068567

Title:Imaging properties of a tetra wedge readout

Authors:Liu, Yong-An (1); Yan, Qiu-Rong (1); Sai, Xiao-Feng (1); Wei, Yong-Lin (1); Sheng, Li-Zhi (1); Hu, Hui-Jun (1); Zhao, Bao-Sheng (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (2) Graduate University, Chinese Academy of Sciences, Beijing 100049, China

Corresponding author:Liu, Y.-A.(liuan86@126.com)

Source title:Chinese Physics B

Abbreviated source title:Chin. Phys.

Volume:20

Issue:6

Issue date:June 2011

Publication year:2011

Article number:068503

Language:English

ISSN:16741056

Document type:Journal article (JA)

Publisher:Institute of Physics Publishing, Temple Back, Bristol, BS1 6BE, United Kingdom

Abstract:The decoding principle of a tetra wedge anode, which is a development of the wedge and strip anode, is described. The influence of charge cloud size on decoding accuracy is studied using the Monte Carlo method. Simulation results show that the decoding error is large when the size of charge clouds collected by the anode is small. Thus, the charge clouds collected by the tetra wedge anode should reach a necessary size to ensure accurate decoding. Finally, using the ultraviolet photon counting imaging system, the linearity and the spatial resolution of the system are tested. Experimental results show that the system has a good linearity and the spatial resolution is better than 100 &mu;m. &copy; 2011 Chinese Physical Society and IOP Publishing Ltd.

Number of references:18

Main heading:Decoding

Controlled terms:Clouds - Image resolution - Monte Carlo methods - Photons

Uncontrolled terms:Decoding errors - Decoding principles - Imaging properties - microchannel plate - photon counting imaging - Simulation result - Spatial resolution - tetra wedge anode - Ultraviolet photon

Classification code:443 Meteorology - 716.1 Information Theory and Signal Processing - 741 Light, Optics and Optical Devices - 741.1 Light/Optics - 742 Cameras and Photography - 922.2 Mathematical Statistics

DOI:10.1088/1674-1056/20/6/068503

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 112>

 

Accession number:20113714319559

Title:Tunable third-harmonic generation in a solid-core tellurite glass fiber

Authors:Lin, Aoxiang (1); Ryasnyanskiy, Aleksandr (1); Toulouse, Jean (1)

Author affiliation:(1) Center for Optical Technologies and Physics Department, Lehigh University, Bethlehem, PA 18015, United States; (2) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics (XIOPM), Chinese Academy of Sciences (CAS), Xi'an 710119, China

Corresponding author:Lin, A.(aoxiang@opt.ac.cn)

Source title:Optics Letters

Abbreviated source title:Opt. Lett.

Volume:36

Issue:17

Issue date:September 1, 2011

Publication year:2011

Pages:3437-3439

Language:English

ISSN:01469592

E-ISSN:15394794

CODEN:OPLEDP

Document type:Journal article (JA)

Publisher:Optical Society of America, 2010 Massachusetts Ave, NW, Washington, DC, DC 20036-1023, United States

Abstract:A solid-core tellurite glass fiber with 1.8 dB/m loss at 1.55 &mu;m was made by using the built-in casting preform fabrication method and rod-in-tube fiber drawing technique. Pumping a 10cm fiber piece with picosecond pulses of 3-5 &times; 10¹² W/cm², 0.1% of the fundamental power limited by the coherence length of 0.3-5 &mu;m was converted into visible third-harmonic power tunable over a broad near-IR wavelength ranging from 1500 to 1680nm. Frequency conversion from the mid-IR to near-IR was found to be even more efficient due to the longer coherence lengths of 12-20 &mu;m in the wavelength range of 2200-2500nm. &copy; 2011 Optical Society of America.

Number of references:15

Main heading:Fibers

Controlled terms:Glass fibers - Optical pumping - Tellurium compounds

Uncontrolled terms:Coherence lengths - Fiber drawing - Near-IR - Pico-second pulse - Preform fabrication - Tellurite glass fiber - Third harmonic - Third-harmonic generation - Wavelength ranges

Classification code:413 Insulating Materials - 741.1 Light/Optics - 804.1 Organic Compounds - 812 Ceramics, Refractories and Glass - 817 Plastics and Other Polymers: Products and Applications

DOI:10.1364/OL.36.003437

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 113>

 

Accession number:20114814562991

Title:Impact of dispersion profiles of silicon waveguides on optical parametric amplification in the femtosecond regime

Authors:Wang, Zhaolu (1); Liu, Hongjun (1); Huang, Nan (1); Sun, Qibing (1); Wen, Jin (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics Technology, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Science (CAS), Xi'an, 710119, China; (2) Graduate University, CAS, Beijing, 100049, China

Corresponding author:Wang, Z.

Source title:Optics Express

Abbreviated source title:Opt. Express

Volume:19

Issue:24

Issue date:November 21, 2011

Publication year:2011

Pages:24730-24737

Language:English

E-ISSN:10944087

Document type:Journal article (JA)

Publisher:Optical Society of America, 2010 Massachusetts Ave, NW, Washington, DC, DC 20036-1023, United States

Abstract:The impact of dispersion profiles of silicon waveguides on femtosecond optical parametric amplification (OPA) is theoretically investigated. It is found that flat quasi-phase-matching, smooth temporal profiles and separable spectra for 200 fs pulses can be obtained by tailoring the cross-section of silicon rib waveguide. We achieve on-chip parametric gain as high as 26.8 dB and idler conversion gain of 25.6 dB for a low pump peak power over a flat bandwidth of 400 nm in a 10-mm-long dispersion engineered silicon waveguide. Our on-chip OPA can find important potential applications in highly integrated optical circuits for alloptical ultrafast signal processing. &copy; 2011 Optical Society of America.

Number of references:31

Main heading:Photonic integration technology

Controlled terms:Amplification - Optical frequency conversion - Waveguides

Uncontrolled terms:All-optical - Conversion gain - Dispersion profile - Femtosecond optical parametric amplification - Femtoseconds - Fs pulse - Highly integrated - On chips - Optical parametric amplification - Parametric gain  - Peak power - Potential applications - Quasi phase matching - Silicon rib waveguides - Silicon waveguide - Temporal profile - Ultrafast signal processing

Classification code:714.2 Semiconductor Devices and Integrated Circuits - 714.3 Waveguides - 741 Light, Optics and Optical Devices

DOI:10.1364/OE.19.024730

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 114>

 

Accession number:20110913704035

Title:Over 300 nm tunable broadband one-crystal noncollinear optical parametric amplification

Authors:Long, H.B. (1); Li, X.F. (3); Liu, H.J. (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics Technology, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (2) Graduate School, Chinese Academy of Sciences, Beijing 100049, China; (3) School of Science, Xi'An University of Post and Telecommunications, Xi'an 710121, China

Corresponding author:Long, H. B.

Source title:Laser Physics

Abbreviated source title:Laser Phys.

Volume:21

Issue:1

Issue date:January 2011

Publication year:2011

Pages:86-89

Language:English

ISSN:1054660X

E-ISSN:15556611

Document type:Journal article (JA)

Publisher:Maik Nauka-Interperiodica Publishing, Profsoyuznaya Ul 90, Moscow, 117997, Russia

Abstract:An over 300 nm tunable broadband noncollinear optical parametric amplification in visible scale as well as the generation of blue pump pulses in one BBO crystal are demonstrated. Micro-joule energies are achieved in the signal branch, and the signal central wavelength can be tuned from 475 to 800 nm. The near-transform-limited sub-50 fs pulse duration is attainable over the whole tuning range after compression by a pair of prisms. &copy; 2011 Pleiades Publishing, Ltd.

Number of references:15

Main heading:Broadband amplifiers

Controlled terms:Amplification - Band structure - Pumps

Uncontrolled terms:BBO crystals - Central wavelength - Fs pulse - Noncollinear - Optical parametric amplification - Pump pulse - Signal branch - Tuning ranges

Classification code:618.2 Pumps - 713.1 Amplifiers - 933 Solid State Physics

DOI:10.1134/S1054660X11010130

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 115>

 

Accession number:20113114198865

Title:Frequency compression of SR for detecting rotor's incipient fault signal

Authors:Wang, Guo-Fu (1); Zhang, Hai-Ru (1); Zhang, Fa-Quan (1); Ye, Jin-Cai (1)

Author affiliation:(1) Key Laboratory Cognitive Radio and Information Processing of the Ministry of Education, Guilin University of Electronic Technology, Guilin 541004, China; (2) Xi'an Institute Optics and Precision Mechanics of Chinese Acad. of Sci., Xi'an 710119, China

Corresponding author:Wang, G.-F.

Source title:Dianji yu Kongzhi Xuebao/Electric Machines and Control

Abbreviated source title:Dianji yu Kongzhi Xuebao

Volume:15

Issue:6

Issue date:June 2011

Publication year:2011

Pages:38-44

Language:Chinese

ISSN:1007449X

Document type:Journal article (JA)

Publisher:Editorial Department of Electric Machines and Control, 23 Sandadongli Road, Harbin, 150040, China

Abstract:Stochastic resonance system is only for small parameter (small amplitude and low frequency) system. However, the frequency of the fault signal of the rotor is higher than the stochastic resonance system. According to the basic theory of stochastic resonance systems, the limit of frequency range of the measure signal of the stochastic resonance system was eliminated by introducing the time-frequency compression algorithm, and stochastic resonance system was extended to the whole band. Theoretical and experimental results show that: by continuous compression transformation, an appropriate input signal was obtained to stochastic resonance system. The unknown frequencies of the original signal can be obtained, according to the change of resonant peaks and transformation operations. The algorithm is 6 orders of magnitude faster than the traditional algorithm of frequency sweep, and it can detect the fault signal under the limit SNR (-50 dB).

Number of references:16

Main heading:Signal detection

Controlled terms:Algorithms - Circuit resonance - Magnetic resonance - Rotors (windings) - Stochastic systems

Uncontrolled terms:Basic theory - Compression algorithms - Fault signal - Frequency compression - Frequency ranges - Frequency sweep - Incipient faults - Input signal - Low frequency - Orders of magnitude  - Original signal - Resonant peaks - Small amplitude - Stochastic resonances - Time frequency - Weak signal detection

Classification code:961 Systems Science - 921 Mathematics - 723 Computer Software, Data Handling and Applications - 716.1 Information Theory and Signal Processing - 704.1 Electric Components - 703.1.1 Electric Network Analysis - 701.2 Magnetism: Basic Concepts and Phenomena

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 116>

 

Accession number:20104813434063

Title:Unidirectional manipulation of surface plasmon polariton by dual-nanocavity in a T-shaped waveguide

Authors:Gong, Yongkang (1); Liu, Xueming (1); Wang, Leiran (1); Zhang, Yani (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China

Corresponding author:Liu, X.(liuxm@opt.ac.cn)

Source title:Optics Communications

Abbreviated source title:Opt Commun

Volume:284

Issue:3

Issue date:February 1, 2011

Publication year:2011

Pages:795-798

Language:English

ISSN:00304018

CODEN:OPCOB8

Document type:Journal article (JA)

Publisher:Elsevier, P.O. Box 211, Amsterdam, 1000 AE, Netherlands

Abstract:A structure of two dimensional T-shaped metal-insulator-metal waveguide with dual-nanocavity is proposed. The two nanocavities located at each side of the slit on the lower metallic surface, act as band rejection filters and are capable of stopping the surface plasmon polaritons (SPPs) at the resonant wavelengths. The Fabry-Perot interferometry theory and the Finite-Difference- Time-Domain method are utilized to investigate the proposed waveguide. The numerical results demonstrate the realization of miniaturized photonic devices for effectively switching the SPPs propagation between the left and right waveguides in one direction. &copy; 2010 Elsevier B.V. All rights reserved.

Number of references:32

Main heading:Two dimensional

Controlled terms:Fabry-Perot interferometers - Integrated optics - Metal insulator boundaries - Optical materials - Particle optics - Phonons - Photonic devices - Photonics - Photons - Plasmons  - Quantum theory - Solids - Surface plasmon resonance - Time domain analysis - Waveguides

Uncontrolled terms:Band rejection filter - Fabry-Perot interferometry - Metal insulator metals - Metallic surface - Nano-cavities - Numerical results - Resonant wavelengths - Surface plasmon polaritons

Classification code:941.3 Optical Instruments - 933 Solid State Physics - 931.4 Quantum Theory; Quantum Mechanics - 931.3 Atomic and Molecular Physics - 921 Mathematics - 902.1 Engineering Graphics - 741.3 Optical Devices and Systems - 741.1 Light/Optics - 714.3 Waveguides - 714.2 Semiconductor Devices and Integrated Circuits - 711 Electromagnetic Waves

DOI:10.1016/j.optcom.2010.09.074

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 117>

 

Accession number:20111413897786

Title:Influence of modulation depth errors on properties of apodized chirped fiber Bragg grating property

Authors:Yang, Lin (1); Duan, Kailiang (2); Luo, Shirong (1); Zhao, Wei (2)

Author affiliation:(1) School of Physical Science and Technology, Sichuan University, Chengdu 610065, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China

Corresponding author:Luo, S.(Luosr@scu.edu.cn)

Source title:Qiangjiguang Yu Lizishu/High Power Laser and Particle Beams

Abbreviated source title:Qiangjiguang Yu Lizishu

Volume:23

Issue:2

Issue date:February 2011

Publication year:2011

Pages:308-312

Language:Chinese

ISSN:10014322

CODEN:QYLIEL

Document type:Journal article (JA)

Publisher:Editorial Office of High Power Laser and Particle Beams, P.O. Box 919-805, Mianyang, 621900, China

Abstract:Starting from the coupled mode equations, the influence of modulation depth errors on the properties of apodized chirped fiber Bragg grating(ACFBG) is investigated theoretically by using a matrix method. The results show that the errors of low frequency distribution deteriorate the performance of ACFBG much more than the errors of high frequency distribution with the same amplitude level, and the errors of higher amplitude level lead to more performance degradation. Therefore, errors of both low frequency distribution and high amplitude level should be avoided in the fabrication of the fiber grating.

Number of references:12

Main heading:Random errors

Controlled terms:Fiber Bragg gratings - Fiber optic components - Fiber optic sensors - Fibers

Uncontrolled terms:Apodized gratings - Chirped fiber Bragg grating - Coupled mode equation - Coupled-mode theory - Fiber gratings - High amplitudes - High frequency - Low frequency distribution - Matrix methods - Modulation depth  - Performance degradation

Classification code:741.1.2 Fiber Optics - 741.3 Optical Devices and Systems - 812 Ceramics, Refractories and Glass - 817 Plastics and Other Polymers: Products and Applications - 922 Statistical Methods

DOI:10.3788/HPLPB20112302.0308

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 118>

 

Accession number:20114914584047

Title:Influence of defocusing on measurement accuracy of image motion of space camera

Authors:Fan, Chao (1); Li, Yingcai (2); Fu, Hongliang (1); Yang, Tiejun (1)

Author affiliation:(1) College of Information Science and Engineering, Henan University of Technology, Zhengzhou, Henan 450001, China; (2) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, Shaanxi 710119, China

Corresponding author:Fan, C.(anfan2003@gmail.com)

Source title:Guangxue Xuebao/Acta Optica Sinica

Abbreviated source title:Guangxue Xuebao

Volume:31

Issue:10

Issue date:October 2011

Publication year:2011

Pages:1028002-1-1028002-7

Language:Chinese

ISSN:02532239

CODEN:GUXUDC

Document type:Journal article (JA)

Publisher:Chinese Optical Society, P.O. Box 80, Xi'an, 710068, China

Abstract:To research the influence of the defocusing of CCD on the measurement accuracy when using the joint transform correlator (JTC) to measure the image motion of space camera, the quadratic phase factor induced by defocusing is deduced based on the theory of Fresnel diffraction. Then the measurement error caused by defocusing is studied by emulation and experiment respectively for the JTC which is processed by using the method of power spectrum subtraction and binarization with threshold of zero. The results show that, the measurement error is not more than 10% when the defocusing amount is within 5% of the focal length of the Fourier lens, and the robustness is good; if the defocusing amount is increasing, the measurement error will nonlinearly increase observably. The results of the research can supply provide useful reference for the real-time and online measurement of image motion.

Number of references:10

Main heading:Cameras

Controlled terms:Remote sensing

Uncontrolled terms:Binarizations - Defocusing - Focal lengths - Fourier lens - Fresnel diffraction - Image motion - Joint transform correlators - Measurement accuracy - On-line measurement - Power spectrum subtraction  - Quadratic phase factors - Space cameras

Classification code:731.1 Control Systems - 742.2 Photographic Equipment

DOI:10.3788/AOS201131.1028002

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 119>

 

Accession number:20111713936118

Title:Improvement of laser pulse contrast by optical Kerr shutter

Authors:He, Jun-Fang (1); Wu, Deng-Ke (1); Wang, Yi-Shan (1); Zhu, Chang-Jun (2); Wu, Zhen (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Acad. of Sci., Xi'an 710119, China; (2) Department of Physics, School of Science, Xi'an Polytechnic University, Xi'an 710048, China

Corresponding author:He, J.-F.(amilyhjf@163.com)

Source title:Guangxue Jingmi Gongcheng/Optics and Precision Engineering

Abbreviated source title:Guangxue Jingmi Gongcheng

Volume:19

Issue:2

Issue date:February 2011

Publication year:2011

Pages:470-474

Language:Chinese

ISSN:1004924X

CODEN:GJGOF4

Document type:Journal article (JA)

Publisher:Chinese Academy of Sciences, 140 Renmin Street, Changchun, 130022, China

Abstract:In order to improve the laser pulse contrast, an optical Kerr shutter was used to select the main pulse to restrain the noise of the main pulse. The laser was split into two beams. One of them was used as a gate light to control the optical Kerr shutter, and the other was to be cleaned. The two beams were spacial crossed in optical Kerr materials. The open time of the optical Kerr shutter was controlled to select the main pulse, while the light outs of the shutter were blocked. Therefore, the laser pulse contrast was enhanced. The experiment result showed that the duration and the transmission ratio of the optical Kerr shutter are about 570 fs and 17%, respectively and the pulse contrast has been enhanced by 10⁴ times. The conclusion is that the optical Kerr shutter technology can efficiently enhance laser pulse contrast.

Number of references:14

Main heading:Light transmission

Controlled terms:Laser pulses

Uncontrolled terms:Contrast - Kerr materials - Kerr shutter - Main pulse - Optical Kerr shutter - Selection - Transmission ratios - Two beams

Classification code:741.1 Light/Optics - 744.1 Lasers, General

DOI:10.3788/OPE.20111902.0470

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 120>

 

Accession number:20114714545013

Title:The classification of SSH tunneled traffic using maximum likelihood classifier

Authors:Tan, Xiaobing (1); Su, Xiuqin (1); Qian, Qingming (1)

Author affiliation:(1) Key Laboratory of Ultrafast Photoelectric Diagnostics Technology, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, Shaanxi, 710119, China; (2) Graduate School of Chinese Academy of Science, 100039 Beijing, China

Corresponding author:Tan, X.(hualing314159@126.com)

Source title:2011 International Conference on Electronics, Communications and Control, ICECC 2011 - Proceedings

Abbreviated source title:Int. Conf. Electron., Commun. Control, ICECC - Proc.

Monograph title:2011 International Conference on Electronics, Communications and Control, ICECC 2011 - Proceedings

Issue date:2011

Publication year:2011

Pages:2347-2350

Article number:6066732

Language:English

ISBN-13:9781457703218

Document type:Conference article (CA)

Conference name:2011 International Conference on Electronics, Communications and Control, ICECC 2011

Conference date:September 9, 2011 - September 11, 2011

Conference location:Ningbo, China

Conference code:87394

Sponsor:Ningbo University

Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States

Abstract:Secure SHell(SSH) [1] provides TCP/IP port forwarding for any Application-layer protocols. It is useful in protecting the privacy of users, but it can lead to the illegal use of some forbidden protocols. Because of the encryption, the Deep Payload Inspection (DPI) technique is ineffective in classifying the network traffic. This paper introduces how to employ the statistical pattern recognition method, Maximum Likelihood Classification [2, 3], to classify the SSH tunneled traffic, i.e. to decide which protocols is tunneled in the encrypted tunnels. It is very important to find out the boundary of a tunneled flow in processing the originate data. So we proposed a method for detecting the boundaries of SSH tunneled traffic. &copy; 2011 IEEE.

Number of references:12

Main heading:Maximum likelihood

Controlled terms:Classification (of information) - Cryptography - Data handling - Internet protocols - Pattern recognition - Telecommunication traffic - Tunnels

Uncontrolled terms:Application-layer protocol - Boundary detection - Encrypted tunnels - maximum likelihood classification - Maximum likelihood classifications - Maximum likelihood classifiers - Network traffic - Secure shell - SSH - Statistical pattern recognition

Classification code:723.2 Data Processing and Image Processing - 723 Computer Software, Data Handling and Applications - 718 Telephone Systems and Related Technologies; Line Communications - 922.1 Probability Theory - 717 Optical Communication - 716 Telecommunication; Radar, Radio and Television - 401.2 Tunnels and Tunneling - 716.1 Information Theory and Signal Processing

DOI:10.1109/ICECC.2011.6066732

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 121>

 

Accession number:20114714539948

Title:Packaging of high power density double quantum well semiconductor laser array using double-side cooling technology

Authors:Wang, Jingwei (1); Zhang, Pu (2); Xiong, Lingling (2); Li, Xiaoning (2); Yuan, Zhenbang (1); Guo, Lu (1); Liu, Xingsheng (1)

Author affiliation:(1) Xi'an Focuslight Technologies Co., LTD, New Industrial Park, Xi'an Hi-Tech Industrial Development Zone, No. 60 Xibu Road, Xi'an, Shanxi, 710119, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, No. 17 Xinxi Road, Xi'an, Shanxi, 710119, China; (3) Key Laboratory for Physical Electronics and Devices of the Ministry of Education, Shaanxi Key Lab. of Information Photonic Technique, Xi an Jiaotong University, No.28, Xianning West Road, Xi'an, Shanxi, 710049, China

Corresponding author:Wang, J.(wangjw@focuslight.com.cn)

Source title:ICEPT-HDP 2011 Proceedings - 2011 International Conference on Electronic Packaging Technology and High Density Packaging

Abbreviated source title:ICEPT-HDP Proc. - Int. Conf. Electron. Packag. Technol. High Density Packag.

Monograph title:ICEPT-HDP 2011 Proceedings - 2011 International Conference on Electronic Packaging Technology and High Density Packaging

Issue date:2011

Publication year:2011

Pages:1152-1156

Article number:6066941

Language:English

ISBN-13:9781457717680

Document type:Conference article (CA)

Conference name:2011 12th International Conference on Electronic Packaging Technology and High Density Packaging, ICEPT-HDP 2011

Conference date:August 8, 2011 - August 11, 2011

Conference location:Shanghai, China

Conference code:87399

Sponsor:Chinese Institute of Electronics; IEEE Compon., Packag., Manuf. Technol. Soc. (IEEE-CPMT)

Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States

Abstract:High power diode laser arrays offer a variety of applications in pumping of solid state laser systems for industry, scientific research, entertainment display and medical treatment etc, due to their higher electrical-optical conversion efficiency, compact size and long lifetime. Currently, most of commercial high power semiconductor laser array/bar products use single quantum well (SQW) construction in the active region. In order to achieve higher optical power at lower driving current without altering the radiation characteristics of the laser diodes, a new laser chip constructed by double quantum well (DQW) active region has been developed. For the DQW laser, two layers of individual emitters are stacked on top of each other. The two layers of emitters in a DQW are in serial connection. Hence, compared with the conventional SQW laser, a doubled output power from DQW under the same drive current could be obtained. However, the transient/peak thermal density generated from these lasers is very high, especially for the up layer in the active region of DQW laser. Therefore, the DQW can more suitably operate in quasi-continuous wave (QCW) mode. It is a challenge to dissipate the heat generated from the up layer of DQW laser. In this work, a double-side cooling technology was developed and the packaging of high power density DQW semiconductor laser array using that technology was presented. Finite element numerical analysis based simulations to analyze the transient thermal behavior of a water-cooled-packaged semiconductor laser array operating at QCW mode was also presented in this paper. Based on the numerical simulation and analysis, a series of DQW semiconductor lasers with high performances were fabricated. The performances of laser diode arrays operating at QCW mode, including the characteristics of Power-Current-Voltage (LIV), spectrum, near-field, and lifetime were characterized. &copy; 2011 IEEE.

Number of references:12

Main heading:Laser applications

Controlled terms:Chip scale packages - Conversion efficiency - Cooling systems - Current voltage characteristics - Diodes - Electronic cooling - Finite element method - High power lasers - Packaging - Power electronics  - Pumping (laser) - Quantum theory - Quantum well lasers - Semiconductor diodes - Semiconductor quantum wells - Solid state lasers - Technology

Uncontrolled terms:Active regions - Compact size - Cooling technology - Double quantum well - Double-quantum-wells - Drive currents - Driving current - Finite element numerical analysis - High power density - High power semiconductor laser  - High-power diode laser arrays - Laser chips - Laser diode arrays - Long lifetime - Medical treatment - Near-field - Optical power - Output power - Radiation characteristics - Scientific researches  - Semiconductor laser arrays - Serial connection - Single quantum well - Solid-state laser systems - Thermal behaviors - Thermal density - Two layers

Classification code:931.4 Quantum Theory; Quantum Mechanics - 921.6 Numerical Methods - 901 Engineering Profession - 744.9 Laser Applications - 744.1 Lasers, General - 715.2 Industrial Electronic Equipment - 714.2 Semiconductor Devices and Integrated Circuits - 714 Electronic Components and Tubes - 694.1 Packaging, General - 641.2 Heat Transfer - 525.5 Energy Conversion Issues

DOI:10.1109/ICEPT.2011.6066941

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 122>

 

Accession number:20114414464496

Title:An acoustic imaging simulation based on microphone array

Authors:Zhang, Jing (1); Liu, Bo (1); Ding, Lu (1); Chen, Errui (1)

Author affiliation:(1) Photoelectric Measurement and Control Technology Research Department, Xi'an Institute of Optics and Precision Mechanics of CAS, Xi'an, China

Corresponding author:Zhang, J.(zhangjingcomeon@163.com)

Source title:Proceedings of 2011 Cross Strait Quad-Regional Radio Science and Wireless Technology Conference, CSQRWC 2011

Abbreviated source title:Proc. Cross Strait Quad-Reg. Radio Sci. Wirel. Technol. Conf., CSQRWC

Volume:2

Monograph title:Proceedings of 2011 Cross Strait Quad-Regional Radio Science and Wireless Technology Conference, CSQRWC 2011

Issue date:2011

Publication year:2011

Pages:1398-1401

Article number:6037226

Language:English

ISBN-13:9781424497904

Document type:Conference article (CA)

Conference name:2011 Cross Strait Quad-Regional Radio Science and Wireless Technology Conference, CSQRWC 2011

Conference date:July 27, 2011 - July 30, 2011

Conference location:Harbin, China

Conference code:87055

Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States

Abstract:Based on a brief introduction of microphone array, the overall structure of acoustic imaging system is illustrated in this paper, followed by the description and analysis of the components of this system. After a uniform linear microphone array based on Multiple Signal Classification (MUSIC) algorithm is described and analyzed, the simulation program on the algorithm is developed with MATLAB. The simulation result of the algorithm indicates that: under the condition of same sample numbers, the higher the SNR, the better the image; the similar conclusion can be got under the condition of the same SNR while the sample rate is varied. Such a result is just what we expected. &copy; 2011 IEEE.

Number of references:8

Main heading:Microphones

Controlled terms:Acoustic imaging - Algorithms - Computer music - Imaging systems - MATLAB - Wavelet analysis - Wireless telecommunication systems

Uncontrolled terms:Imaging simulation - Linear microphonearray - Microphone array - Microphone arrays - Modified MUSIC - Multiple signal classification algorithm - Sample number - Sample rate - Simulation program - Simulation result

Classification code:752.1 Acoustic Devices - 752 Sound Devices, Equipment and Systems - 746 Imaging Techniques - 921 Mathematics - 741 Light, Optics and Optical Devices - 717 Optical Communication - 716 Telecommunication; Radar, Radio and Television - 723 Computer Software, Data Handling and Applications

DOI:10.1109/CSQRWC.2011.6037226

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 123>

 

Accession number:20112814129539

Title:Analytical vectorial structure of non-paraxial four-petal Gaussian beams in the far field

Authors:Long, Xuewen (1); Lu, Keqing (1); Zhang, Yuhong (1); Guo, Jianbang (1); Li, Kehao (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (2) Graduate School of Chinese Academy of Sciences, Beijing 100039, China

Corresponding author:Lu, K.(keqinglu@opt.ac.cn)

Source title:Optik

Abbreviated source title:Optik

Volume:122

Issue:16

Issue date:August 2011

Publication year:2011

Pages:1448-1452

Language:English

ISSN:00304026

Document type:Journal article (JA)

Publisher:Urban und Fischer Verlag Jena, P.O. Box 100537, Jena, 07705, Germany

Abstract:Abstract: The analytical vectorial structure of non-paraxial four-petal Gaussian beams (FPGBs) in the far field has been studied based on vector angular spectrum method and stationary phase method. In terms of analytical electromagnetic representations of the TE and TM terms, the energy flux distributions of the TE term, the TM term, and the whole beam are derived in the far field, respectively. According to our investigation, the FPGBs can evolve into a number of small petals in the far field. The number of the petals is determined by the order of input beam. The physical pictures of the FPGBs are well illustrated from the vectorial structure, which is beneficial to strengthen the understanding of vectorial properties of the FPGBs. &copy; 2010 Elsevier GmbH. All rights reserved.

Number of references:17

Main heading:Gaussian beams

Controlled terms:Gaussian distribution - Gaussian noise (electronic) - Spectrum analysis

Uncontrolled terms:Angular spectrum method - Energy fluxes - Far field - Four-petal Gaussian beam - Physical pictures - Stationary phase methods - Vectorial structure

Classification code:944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments - 943 Mechanical and Miscellaneous Measuring Instruments - 942 Electric and Electronic Measuring Instruments - 941 Acoustical and Optical Measuring Instruments - 922.1 Probability Theory - 921 Mathematics - 716 Telecommunication; Radar, Radio and Television - 713 Electronic Circuits - 711 Electromagnetic Waves

DOI:10.1016/j.ijleo.2010.09.028

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 124>

 

Accession number:20113914361990

Title:Integrating kAS and SIFT-like descriptor for image description

Authors:Shang, Mianyou (1); Pan, Jing (2); Pang, Yanwei (1); Yuan, Yuan (3)

Author affiliation:(1) School of Electronic Information Engineering, Tianjin University, Tianjin 300072, China; (2) School of Electronic Engineering, Tianjin University of Technology and Education, Tianjin 3000222, China; (3) State Key Laboratory of Transient Optics and Photonics, Center for OPTical IMagery Analysis and Learning (OPTIMAL), Xi'an Institute of Optics and Precision Mechanics, Xi'an 710119, Shaanxi, China

Corresponding author:Shang, M.(526299451@qq.com)

Source title:Proceedings - 6th International Conference on Image and Graphics, ICIG 2011

Abbreviated source title:Proc. - Int. Conf. Image Graph., ICIG

Monograph title:Proceedings - 6th International Conference on Image and Graphics, ICIG 2011

Issue date:2011

Publication year:2011

Pages:533-537

Article number:6005609

Language:English

ISBN-13:9780769545417

Document type:Conference article (CA)

Conference name:6th International Conference on Image and Graphics, ICIG 2011

Conference date:August 12, 2011 - August 15, 2011

Conference location:Hefei, Anhui, China

Conference code:86574

Sponsor:National Natural Science Foundation of China; Chinese Academy of Science; Microsoft Research Asia; Xian Institute of Optics and Precision Mechanics of CAS; Anhui Crearo Technology Co., Ltd

Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States

Abstract:Shape-descriptor (e.g. Adjacent Contour Segments, i.e. kAS) and keypoint-descriptor (e.g. Scale Invariant Feature Transform, i.e. SIFT) are widely used for computer vision. However, few works principally integrate shape-descriptor and keypoint-descriptor to describe the content of an image. On one hand, in some cases the degree of locality of keypiont-descriptor is too high to capture semantic characteristics of an object. On the other hand, though the shape has higher semantic level than keypoint, it contains no texture information because only the information of contour/edge is used. To make full use of the information of both shape and keypoint for generate robust and distinctive features, in this paper we propose an algorithm to integrate shape and keypoint descriptor. Specifically, we employ kAS to extract useful shape information. Then keypoints of a kAS shape are defined at which we propose to extract SIFT-like features. Experimental results on image matching demonstrate the effectiveness of the proposed algorithm. &copy; 2011 IEEE.

Number of references:11

Main heading:Image matching

Controlled terms:Algorithms - Computer vision - Semantics

Uncontrolled terms:Descriptors - Feature - Integrating - KAS - SIFT

Classification code:723 Computer Software, Data Handling and Applications - 723.5 Computer Applications - 741 Light, Optics and Optical Devices - 741.2 Vision - 903.2 Information Dissemination - 921 Mathematics

DOI:10.1109/ICIG.2011.164

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 125>

 

Accession number:20113414251890

Title:Coexistence of unequal pulses in a normal dispersion fiber laser

Authors:Mao, Dong (1); Liu, Xueming (1); Wang, Leiran (1); Lu, Hua (1); Duan, Lina (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China

Corresponding author:Mao, D.

Source title:Optics Express

Abbreviated source title:Opt. Express

Volume:19

Issue:17

Issue date:August 15, 2011

Publication year:2011

Pages:16303-16308

Language:English

E-ISSN:10944087

Document type:Journal article (JA)

Publisher:Optical Society of America, 2010 Massachusetts Ave, NW, Washington, DC, DC 20036-1023, United States

Abstract:We experimentally demonstrate unequal pulses delivered from an erbium-doped fiber (EDF) laser with net-normal dispersion. Two types of pulses with different durations, energies, and spectra coexist in the same ring cavity. The output spectrum exhibits a broadband base that corresponds to the main pulse and a small rectangular lump that corresponds to the additional satellite pulse. With the enhancement of pump power, the intensity of main pulse almost keeps unchanged while the satellite pulse nearly increases linearly. Based on experimental results, it is indicated that two different pulse shaping mechanisms coexist in laser cavity, where the nonlinear polarization rotation (NPR) and spectral filtering (SF) effect contribute to the formation of main pulse and satellite pulse, respectively. &copy; 2011 Optical Society of America.

Number of references:32

Main heading:Optical pumping

Controlled terms:Dispersions - Erbium - Fiber lasers - Satellites

Uncontrolled terms:Erbium doped fiber laser - Laser cavity - Main pulse - Nonlinear polarization rotation - Normal dispersion - Output spectrum - Pulse-shaping - Pump power - Ring cavities - Spectral filtering

Classification code:547.2 Rare Earth Metals - 655.2 Satellites - 741.1 Light/Optics - 741.1.2 Fiber Optics - 951 Materials Science

DOI:10.1364/OE.19.016303

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 126>

 

Accession number:20113914373335

Title:Optimizing design of real-time spatial moving target tracking system

Authors:Liang, Dong Sheng (1); Liu, Zhao Hui (1); Liu, Wen (1)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (2) Graduate University of Chinese Academy of Sciences, Beijing 100039, China

Corresponding author:Liang, D.S.(dongshengstar@126.com)

Source title:Advanced Materials Research

Abbreviated source title:Adv. Mater. Res.

Volume:328-330

Monograph title:Mechatronics and Materials Processing I

Issue date:2011

Publication year:2011

Pages:2234-2237

Language:English

ISSN:10226680

ISBN-13:9783037852385

Document type:Conference article (CA)

Conference name:2011 International Conference on Mechatronics and Materials Processing, ICMMP 2011

Conference date:November 18, 2011 - November 20, 2011

Conference location:Guangzhou, China

Conference code:86635

Sponsor:Guangzhou University

Publisher:Trans Tech Publications, P.O. Box 1254, Clausthal-Zellerfeld, D-38670, Germany

Abstract:Achieving the detection and tracking of moving targets has been widely applied in all fields of today's society. Because of the shortcomings of traditional video tracking system, this paper proposes a novel method for designing video processing system based on hardware design of FPGA and DSP, and moving target in video can be detected and tracked by this system. In this system, DSP as the core of the system, it mainly completes the processing algorithms of video and image data, FPGA as a coprocessor, responsible for the completion of the processing of external data and logic. The hardware structure, link configuration, program code and other aspects of system are optimized. Finally, through the experiment, the input frame rate of video is 40frames/s, and the image resolution is 512pixels &times; 512pixels, median 16bites quantitative image sequence, the system can complete the relevant real-time detection and tracking algorithm and extract targets position of image sequences correctly. The results show that the advantage is that this system has powerful operation speed, real time, high accuracy and stability. &copy; 2011 Trans Tech Publications.

Number of references:10

Main heading:Target tracking

Controlled terms:Algorithms - Data handling - Image resolution - Mechatronics - Navigation - Optimization - Pixels

Uncontrolled terms:Co-processors - Detection and tracking - Frame rate - Hardware design - Hardware structures - Image data - Image sequence - Link configuration - Moving target tracking - Moving targets  - Operation speed - Optimizing design - Processing algorithms - Program code - Quantitative images - Real time - Real time tracking - Real-time detection - Video processing - Video tracking system

Classification code:608 Mechanical Engineering, General - 716.2 Radar Systems and Equipment - 716.3 Radio Systems and Equipment - 723 Computer Software, Data Handling and Applications - 921 Mathematics - 921.5 Optimization Techniques

DOI:10.4028/www.scientific.net/AMR.328-330.2234

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 127>

 

Accession number:20113614293300

Title:Improvement of the diffraction efficiency of isotropic and anisotropic gratings in fulgide film by auxiliary light

Authors:Cheng, Ming (1); Menke, Neimule (1); Yao, Baoli (1); Wang, Yingli (1); Chen, Yi (1)

Author affiliation:(1) School of Physical Science and Technology, Inner Mongolia Universtiy, Huhhot, 010021, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710068, China; (3) Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100101, China; (4) Inner Mongolia University, Huhhot, China

Corresponding author:Cheng, M.

Source title:2011 International Conference on Remote Sensing, Environment and Transportation Engineering, RSETE 2011 - Proceedings

Abbreviated source title:Int. Conf. Remote Sens., Environ. Transp. Eng., RSETE - Proc.

Monograph title:2011 International Conference on Remote Sensing, Environment and Transportation Engineering, RSETE 2011 - Proceedings

Issue date:2011

Publication year:2011

Pages:6047-6052

Article number:5965734

Language:English

ISBN-13:9781424491711

Document type:Conference article (CA)

Conference name:2011 International Conference on Remote Sensing, Environment and Transportation Engineering, RSETE 2011

Conference date:June 24, 2011 - June 26, 2011

Conference location:Nanjing, China

Conference code:86226

Sponsor:Nanjing University of Information Science and Technology; Peking University; Fudan University; Tsinghua University; Jilin University

Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States

Abstract:No matter during the ordinary holograph recording process in photochromic media, or during the polarization holograph recording process in photoinduced anisotropy media, there exits an overshooting peak in the diffraction efficiency, which then decays to a lower permanent level or also to zero, because of the diminishing of fringe contrast caused by a photochemically active readout beam, unequal intensities of object and reference waves and the nonlinear saturation effects of photoisomerization process and photoinduced anisotropy process. It is known that in ordinary holograph recording, this decreasing process can be eliminated by illuminating the hologram with a uniform control beam that has the effect of molecular back-conversion photo chrome. It was found that in polarization holograph recording, this method also can be used. Experiments done with an ordinary hologram and a polarization hologram recorded in a bistable state photochromic 3-indolybenzylfulgimide/PMMA film at 633 nm have shown that a control beam at 405 nm can increase the stable-state diffraction efficiency, thus, allowing to decrease the rigorous requirements on the recording time, the object reference ratio and the reading beam intensity in the holographic recording. And the theoretical qualitative analyses are also given. &copy; 2011 IEEE.

Number of references:7

Main heading:Efficiency

Controlled terms:Anisotropic media - Anisotropy - Civil engineering - Contrast media - Diffraction efficiency - Holograms - Lithography - Photochromism - Polarization - Remote sensing

Uncontrolled terms:Auxiliary light - Beam intensity - Bi-stable state - Control beams - Fringe contrasts - Fulgides - Fulgimide - Holographic recordings - Nonlinear saturation - Object reference  - Ordinary hologram - Photo-induced anisotropy - Polarization hologram - Polarization holographs - Qualitative analysis - Read-out beams - Recording process - Reference waves

Classification code:951 Materials Science - 931.2 Physical Properties of Gases, Liquids and Solids - 913.1 Production Engineering - 803 Chemical Agents and Basic Industrial Chemicals - 743 Holography - 741.1 Light/Optics - 741 Light, Optics and Optical Devices - 731.1 Control Systems - 714.2 Semiconductor Devices and Integrated Circuits - 711 Electromagnetic Waves - 409 Civil Engineering, General

DOI:10.1109/RSETE.2011.5965734

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 128>

 

Accession number:20112514071838

Title:Transfer latent variable model based on divergence analysis

Authors:Gao, Xinbo (1); Wang, Xiumei (1); Li, Xuelong (2); Tao, Dacheng (3)

Author affiliation:(1) School of Electronic Engineering, Xidian University, Xi'an 710071, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, Shaanxi, China; (3) School of Computer Engineering, Nanyang Technological University, 50 Nanyang Avenue, B/k N4, 639798, Singapore, Singapore

Corresponding author:Li, X.(xuelong_li@opt.ac.cn)

Source title:Pattern Recognition

Abbreviated source title:Pattern Recogn.

Volume:44

Issue:10-11

Issue date:October-November 2011

Publication year:2011

Pages:2358-2366

Language:English

ISSN:00313203

CODEN:PTNRA8

Document type:Journal article (JA)

Publisher:Elsevier Ltd, Langford Lane, Kidlington, Oxford, OX5 1GB, United Kingdom

Abstract:Latent variable models are powerful dimensionality reduction approaches in machine learning and pattern recognition. However, this kind of methods only works well under a necessary and strict assumption that the training samples and testing samples are independent and identically distributed. When the samples come from different domains, the distribution of the testing dataset will not be identical with the training dataset. Therefore, the performance of latent variable models will be degraded for the reason that the parameters of the training model do not suit for the testing dataset. This case limits the generalization and application of the traditional latent variable models. To handle this issue, a transfer learning framework for latent variable model is proposed which can utilize the distance (or divergence) of the two datasets to modify the parameters of the obtained latent variable model. So we do not need to rebuild the model and only adjust the parameters according to the divergence, which will adopt different datasets. Experimental results on several real datasets demonstrate the advantages of the proposed framework. &copy; 2010 Elsevier Ltd. All rights reserved.

Number of references:48

Main heading:Case based reasoning

Controlled terms:Pattern recognition - Statistical tests

Uncontrolled terms:Bregman divergences - Data sets - Different domains - Dimensionality reduction - Latent variable models - Real data sets - Testing samples - Training dataset - Training model - Training sample  - Transfer learning

Classification code:716 Telecommunication; Radar, Radio and Television - 723.4 Artificial Intelligence - 922.2 Mathematical Statistics

DOI:10.1016/j.patcog.2010.06.013

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 129>

 

Accession number:20120814792078

Title:Effects of the host morphologies on luminescence properties of Nd ³⁺-doped LaF<inf>3</inf> nanoparticles

Authors:She, Jiangbo (1); Hou, Chaoqi (1); Guo, Haitao (1); Gao, Chao (1); Cui, Xiaoxia (1); Lu, Min (1); Wei, Wei (1); Peng, Bo (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences xi'An, Shannxi, 710119, China; (2) Graduate University, Chinese Academy of Science, Beijing 100039, China; (3) Institute of Advanced Materials, Nanjing University of Posts and Telecommunications, Nanjing 210003, China

Corresponding author:Wei, W.

Source title:Journal of Nanoscience and Nanotechnology

Abbreviated source title:J. Nanosci. Nanotechnol.

Volume:11

Issue:10

Issue date:2011

Publication year:2011

Pages:8609-8612

Language:English

ISSN:15334880

CODEN:JNNOAR

Document type:Conference article (CA)

Publisher:American Scientific Publishers, 25650 North Lewis Way, Stevenson Ranch, California, 91381-1439, United States

Abstract:By using different surfactants, several host morphologies including rod-like, pot-like and shuttlelike of LaF<inf>3</inf>:Nd³⁺(1% mol) nanoparticles were prepared by a simple microemulsion hydrothermal method, and their properties were characterised by XRD, TEM and photoluminescence spectroscopy. The experimental results indicated that the rod-like and pot-like nanocrystals possess well shaped hollow structures. The analysis of spectra proved that the local environment around the dopant ion changed with the different host morphology, which in turn influenced the luminescence properties. The luminescence lifetimes derived from biexponential fitting were 615 &mu;s (nanopots), 419 &mu;s (nanorods) and 194 &mu;s (nanoshuttles), respectively. This phenomenon is ascribed to the weakening effect of hollow or fenestral structures to the nonradiative ratio. Copyright &copy; 2011 American Scientific Publishers. All rights reserved.

Number of references:15

Main heading:Morphology

Controlled terms:Doping (additives) - Fluorescence - Fluorine compounds - Luminescence - Luminescence of inorganic solids - Microemulsions - Nanoparticles - Nanorods - Nanostructures - Neodymium  - Photoluminescence spectroscopy - Surface active agents

Uncontrolled terms:Biexponential - Hollow structure - Hydrothermal methods - Local environments - Luminescence lifetime - Luminescence properties - Nanoshuttles - Non-radiative - Rare-Earth Fluorides - Weakening effect  - XRD , TEM

Classification code:933 Solid State Physics - 804 Chemical Products Generally - 803 Chemical Agents and Basic Industrial Chemicals - 801 Chemistry - 951 Materials Science - 761 Nanotechnology - 741.1 Light/Optics - 708 Electric and Magnetic Materials - 547.2 Rare Earth Metals - 741.3 Optical Devices and Systems

DOI:10.1166/jnn.2011.4961

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 130>

 

Accession number:20113914364616

Title:Experiments of infrared thermography NDT in composite materials with honeycomb sandwich structure

Authors:Wu, Cuiqin (1); Wang, Weiping (1); Yuan, Qigang (1); Li, Yanjun (2); Zhang, Wei (3); Zhang, Xiangdong (4)

Author affiliation:(1) SICON OPTO-Electonic LTD., Xi'an 710043, China; (2) Northwestern Polytechnical University, Xi'an 710065, China; (3) Xi'an Research Inst. of Hi-Tech, Hongqing Town, Xi'an 710025, China; (4) No.203 Research Institute of China Ordance Industries, Xi'an 710068, China

Corresponding author:Wu, C.(cuiqin_wu@163.com)

Source title:Advanced Materials Research

Abbreviated source title:Adv. Mater. Res.

Volume:311-313

Monograph title:Advanced Materials and Processes

Issue date:2011

Publication year:2011

Pages:127-130

Language:English

ISSN:10226680

ISBN-13:9783037852149

Document type:Conference article (CA)

Conference name:2011 International Conference on Advanced Design and Manufacturing Engineering, ADME 2011

Conference date:September 16, 2011 - September 18, 2011

Conference location:Guangzhou, China

Conference code:86611

Sponsor:Guangdong University of Technology; Huazhong University of Science and Technology; Hong Kong University of Science and Technology; Hong Kong Polytechnic University; University of Nottingham

Publisher:Trans Tech Publications, P.O. Box 1254, Clausthal-Zellerfeld, D-38670, Germany

Abstract:To estimate the disbond defects of the carbon fiber composite materials with honeycomb sandwich structure applied in the aerospace, active infrared thermographic NDT (non-destructive testing) is researched. The specimen with known disbond defects is detected by an active infrared thermography system. The specimen is stimulated by a pulse heating source. Based on the thermal wave propagation theory, the surface temperature of the specimen contained defects will differ from the surrounding sound area because of their different thermal-physical properties. The surface temperature is monitored using infrared camera and analyzed by a computer in the time domain. The experiment results show that the active infrared thermographic NDT is rapid, effective and intuitive for detecting the disbond defects in composite materials with honeycomb sandwich structure. &copy; (2011) Trans Tech Publications, Switzerland.

Number of references:5

Main heading:Nondestructive examination

Controlled terms:Acoustic wave propagation - Atmospheric temperature - Carbon fibers - Composite materials - Design - Experiments - Honeycomb structures - Manufacture - Materials testing - Sandwich structures  - Surface defects - Surface properties - Thermography (imaging) - Thermography (temperature measurement)

Uncontrolled terms:Active infrared thermography - Carbon fiber composite materials - Disbond - Honeycomb sandwich structure - Infra-red cameras - Non destructive testing - Pulse-heating - Surface temperatures - Thermal wave propagation - Thermal-physical property  - Time domain

Classification code:951 Materials Science - 537.1 Heat Treatment Processes - 742.1 Photography - 751.1 Acoustic Waves - 804 Chemical Products Generally - 901.3 Engineering Research - 944.6 Temperature Measurements - 443.1 Atmospheric Properties - 422 Strength of Building Materials; Test Equipment and Methods - 421 Strength of Building Materials; Mechanical Properties - 415 Metals, Plastics, Wood and Other Structural Materials - 408.2 Structural Members and Shapes - 408 Structural Design - 423 Non Mechanical Properties and Tests of Building Materials

DOI:10.4028/www.scientific.net/AMR.311-313.127

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 131>

 

Accession number:20113914368216

Title:The microstructure of zinc oxide films prepared by hydrothermal method

Authors:Xia, Zhilin (1); Xu, Qi (2); Zhao, Lixin (2)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Chinese Academy of Sciences, Xi An, 710119, China; (2) School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China

Corresponding author:Xia, Z.(lionel626@163.com)

Source title:Advanced Materials Research

Abbreviated source title:Adv. Mater. Res.

Volume:306-307

Monograph title:Emerging Focus on Advanced Materials

Issue date:2011

Publication year:2011

Pages:1238-1241

Language:English

ISSN:10226680

ISBN-13:9783037852040

Document type:Conference article (CA)

Conference name:1st International Congress on Advanced Materials 2011, AM2011

Conference date:May 13, 2011 - May 16, 2011

Conference location:Jinan, China

Conference code:86613

Publisher:Trans Tech Publications, P.O. Box 1254, Clausthal-Zellerfeld, D-38670, Germany

Abstract:In the solutions which are prepared by mixing zinc nitrate hexahydrate, strong ammonia and methenamine in water bath at 90 Centigrade, lamellate and granular zinc oxide films have grown on different substrates such as B270 glass, glass based PAA films, pure aluminum foil and aluminum based PAA films. Films microstructures were characterized by scanning electron microscope (SEM). The influences of substrate and pH on the films microstructure were analyzed. Results reflect that: Ammonia plays an important role in the growing competition of grainy crystal; the more concentration of ammonia, the more zinc oxide crystals grow into granular. Because of the high specific area and adsorption capacity, lacunaris zinc oxide films have great application perspective in gas sensor, catalyzed sorption and biochemistry. &copy; (2011) Trans Tech Publications, Switzerland.

Number of references:11

Main heading:Oxide films

Controlled terms:Adsorption - Aluminum - Aluminum foil - Ammonia - Film preparation - Glass - Microstructure - Scanning electron microscopy - Substrates - Zinc  - Zinc oxide

Uncontrolled terms:Adsorption capacities - Different substrates - Hydrothermal methods - Oxide crystals - Pure aluminum - Scanning electron microscopes - Specific areas - Water baths - Zinc nitrates

Classification code:933 Solid State Physics - 812.3 Glass - 804.2 Inorganic Compounds - 802.3 Chemical Operations - 801 Chemistry - 951 Materials Science - 741.1 Light/Optics - 712.1 Semiconducting Materials - 546.3 Zinc and Alloys - 541.1 Aluminum - 461 Bioengineering and Biology - 712.1.2 Compound Semiconducting Materials

DOI:10.4028/www.scientific.net/AMR.306-307.1238

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 132>

 

Accession number:20112714115851

Title:Compressed hyperspectral image sensing based on interband prediction

Authors:Liu, Haiying (1); Li, Yunsong (1); Wu, Chengke (1); L&#252;, Pei (2)

Author affiliation:(1) State Key Lab. of Integrated Service Networks, Xidian Univ., Xi'an 710071, China; (2) Xi'an Institute of Optics and Precision Mechanics of Chinese Acad. of Sci., Xi'an 710119, China

Corresponding author:Liu, H.(hyliu@mail.xidian.edu.cn)

Source title:Xi'an Dianzi Keji Daxue Xuebao/Journal of Xidian University

Abbreviated source title:Xi'an Dianzi Keji Daxue Xuebao

Volume:38

Issue:3

Issue date:June 2011

Publication year:2011

Pages:37-41+120

Language:Chinese

ISSN:10012400

CODEN:XDKXEP

Document type:Journal article (JA)

Publisher:Science Press, 18,Shuangqing Street,Haidian, Beijing, 100085, China

Abstract:A new compression algorithm for hyperspectral images based on compressed sensing is proposed which has the advantages of high reconstruction quality and low complexity by exploiting the strong spectral correlations. At the encoder, the prediction parameter between the neighboring bands is first estimated using the prediction algorithm and transmitted to the decoder. The random measurements of each band are then made, quantized and transmitted to the decoder independently. At the decoder, a new reconstruction algorithm with the proposed initialization and stopping criterion is applied to reconstruct the current band with the assistance of its prediction band, which is derived from the previous reconstructed neighboring band and the received prediction parameter using the prediction algorithm. Experimental results show that the proposed algorithm not only obtains a gain of about 1.2 dB but also greatly decreases decoding complexity. In addition, our algorithm has the characteristics of low-complexity encoding and easy hardware implementation.

Number of references:12

Main heading:Forecasting

Controlled terms:Algorithms - Decoding - Hardware - Independent component analysis - Parameter estimation - Remote sensing - Signal reconstruction

Uncontrolled terms:Compressed sensing - Compression algorithms - Decoding complexity - Hardware implementations - Hyper-spectral images - Hyperspectral imagery - Interband - Linear prediction - Low-complexity - Prediction algorithms  - Random measurement - Reconstruction algorithms - Reconstruction quality - Spectral correlation - Stopping criteria

Classification code:605 Small Tools and Hardware - 716.1 Information Theory and Signal Processing - 723 Computer Software, Data Handling and Applications - 723.4 Artificial Intelligence - 731.1 Control Systems - 921 Mathematics

DOI:10.3969/j.issn.1001-2400.2011.03.007

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 133>

 

Accession number:20112114002513

Title:Continuous wave operation of Tm<inf>2</inf>O<inf>3</inf>-doped germanate glass laser around 2 &mu;m

Authors:Zou, Yuwan (1); Wang, Qing (1); Zhang, Yongdong (1); Li, Dehua (1); Wei, Zhiyi (1); Ling, Weijun (2); Fan, Jintai (3); Zhang, Long (3)

Author affiliation:(1) Laboratory of Optical Physics, Institute of Physics, Chinese Acad. of Sci., Beijing 100190, China; (2) Xi'an Institute of Optics and Precision Mechanics, Chinese Acad. of Sci., Xi'an, Shaanxi 710119, China; (3) Key Laboratory of Materials for High-Power Laser, Shanghai Institute of Optics and Fine Mechanics, Chinese Acad. of Sci., Shanghai 201800, China

Corresponding author:Wei, Z.(zywei@iphy.ac.cn)

Source title:Zhongguo Jiguang/Chinese Journal of Lasers

Abbreviated source title:Zhongguo Jiguang

Volume:38

Issue:4

Issue date:April 2011

Publication year:2011

Article number:0402004

Language:Chinese

ISSN:02587025

CODEN:ZHJIDO

Document type:Journal article (JA)

Publisher:Science Press, 18,Shuangqing Street,Haidian, Beijing, 100085, China

Abstract:A continuous-wave (CW) Tm<inf>2</inf>O<inf>3</inf>-doped FGe glass laser is demonstrated. An uncoated one percent of mole fraction Tm<inf>2</inf>O<inf>3</inf>-doped GeO<inf>2</inf>-Ga<inf>2</inf>O<inf>3</inf> -BaF<inf>2</inf>-MO/F<inf>2</inf> (FGe) glass is employed as the laser medium. Pumped with a Ti:sapphire laser at 790 nm, CW laser is realized using two kinds of output couplers (OC). Under the 3% OC, output power of 83 mW is obtained, corresponding to a slope efficiency of 13.7%, and the optical conversion efficiency is 8.8%. The measured central wavelength is 1968 nm.

Number of references:17

Main heading:Glass lasers

Controlled terms:Conversion efficiency - Gallium - Germanium oxides - Glass - Pumping (laser)

Uncontrolled terms:Central wavelength - Continuous wave operation - Continuous waves - CW-laser - Germanate glass - Laser medium - Mole fraction - Optical conversion efficiency - Output couplers - Output power  - Slope efficiencies - Ti: Sapphire laser - Tm<inf>2</inf>O<inf>3</inf>-doped FGe glass

Classification code:525.5 Energy Conversion Issues - 549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals - 744.1 Lasers, General - 804 Chemical Products Generally - 812.3 Glass

DOI:10.3788/CJL201138.0402004

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 134>

 

Accession number:20113614296295

Title:Medium-sized aperture deployable telescope for microsatellite application

Authors:Feng, Xuegui (1); Li, Chuang (1); Ren, Guorui (1)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, 710119, China; (2) Graduate University, Chinese Academy of Sciences, Beijing, 100049, China

Corresponding author:Feng, X.

Source title:Proceedings of SPIE - The International Society for Optical Engineering

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:8196

Monograph title:International Symposium on Photoelectronic Detection and Imaging 2011: Space Exploration Technologies and Applications

Issue date:2011

Publication year:2011

Article number:81961V

Language:English

ISSN:0277786X

CODEN:PSISDG

ISBN-13:9780819488374

Document type:Conference article (CA)

Conference name:International Symposium on Photoelectronic Detection and Imaging 2011: Space Exploration Technologies and Applications

Conference date:May 24, 2011 - May 26, 2011

Conference location:Beijing, China

Conference code:86296

Sponsor:Chinese Society of Astronautics (CAS)

Publisher:SPIE, P.O. Box 10, Bellingham, WA 98227-0010, United States

Abstract:An important research interest on space optics is the ultra-light space telescope technology which is compatible with microsatellite platform. To realize lightweight telescope, one way is to develop deployable telescopes. They not only maintain the capabilities of traditional non-deployable telescopes but also have compacter launch volume and lighter weight and lower cost. We investigate the telescope with accurate deployable structure based on tape springs. Before launch, the secondary mirror support structure with tape springs is folded, and when the satellite is on orbit, the secondary mirror is deployed with the elastic strain energy of folded tape springs. There are mainly three parts in the paper. Firstly, the telescope optics was presented. A Ritchey-Chretien (RC) type optical system with 300mm aperture was designed. The influence of the secondary mirror misalignment on the optical performance was analyzed. Secondly, the deployable telescope structure with tape springs was designed for the RC system. The finite element method (FEM) was used to analysis the dynamics of the unfolded telescope structure. Finally, the deployment precision metering system was discussed. &copy; 2011 SPIE.

Number of references:8

Main heading:Optical telescopes

Controlled terms:DNA sequences - Finite element method - Launching - Mirrors - Optical systems - Optics - Space research - Space telescopes - Springs (components)

Uncontrolled terms:Deployable structure - Deployable telescopes - Deployment - Elastic strain energy - Lightweight telescope - Lower cost - Micro satellite - Micro-satellite platforms - On orbit - Optical performance  - Precision metering - RC system - Secondary mirror - Tape springs - Telescope optics - Telescope structures - Ultra-light

Classification code:921.6 Numerical Methods - 741.3 Optical Devices and Systems - 741.1 Light/Optics - 672 Naval Vessels - 656.2 Space Research - 601.2 Machine Components - 461.2 Biological Materials and Tissue Engineering

DOI:10.1117/12.901038

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 135>

 

Accession number:20113614296260

Title:Thermal optimum design for tracking primary mirror of Space Telescope

Authors:Pan, Hai-Jun (1); Ruan, Pinga (1); Li, Fu (1); Wang, Hong-Wei (1)

Author affiliation:(1) Chinese Academy of Sciences, Xi'an Institute of Optics and Precision Mechanics, Xi'an 710119, China; (2) Graduate School, Chinese Academy of Sciences, Beijing 100039, China

Corresponding author:Pan, H.-J.(dutt386@163.com)

Source title:Proceedings of SPIE - The International Society for Optical Engineering

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:8196

Monograph title:International Symposium on Photoelectronic Detection and Imaging 2011: Space Exploration Technologies and Applications

Issue date:2011

Publication year:2011

Article number:81960M

Language:English

ISSN:0277786X

CODEN:PSISDG

ISBN-13:9780819488374

Document type:Conference article (CA)

Conference name:International Symposium on Photoelectronic Detection and Imaging 2011: Space Exploration Technologies and Applications

Conference date:May 24, 2011 - May 26, 2011

Conference location:Beijing, China

Conference code:86296

Sponsor:Chinese Society of Astronautics (CAS)

Publisher:SPIE, P.O. Box 10, Bellingham, WA 98227-0010, United States

Abstract:In the conventional method, the structural parameters of primary mirror are usually optimized just by the requirement of mechanical performance. Because the influences of structural parameters on thermal stability are not taken fully into account in this simple method, the lightweight optimum design of primary mirror usually brings the bad thermal stability, especially in the complex environment. In order to obtain better thermal stability, a new method about structure-thermal optimum design of tracking primary mirror is discussed. During the optimum process, both the lightweight ratio and thermal stability will be taken into account. The structure-thermal optimum is introduced into the analysis process and commenced after lightweight design as the secondary optimum. Using the engineering analysis of software ANSYS, a parameter finite element analysis (FEA) model of mirror is built. On the premise of appropriate lightweight ratio, the RMS of structure-thermal deformation of mirror surface and lightweight ratio are assigned to be state variables, and the maximal RMS of temperature gradient load to be object variable. The results show that certain structural parameters of tracking primary mirror have different influences on mechanical performance and thermal stability, even they are opposite. By structure-thermal optimizing, the optimized mirror model discussed in this paper has better thermal stability than the old one under the same thermal loads, which can drastically reduce difficulty in thermal control. &copy; 2011 SPIE.

Number of references:8

Main heading:Structural optimization

Controlled terms:Deformation - Design - Finite element method - Mirrors - Space research - Structural analysis - Thermodynamic stability

Uncontrolled terms:Analysis process - Complex environments - Conventional methods - Engineering analysis - Lightweight design - Mechanical performance - Mirror model - Mirror surfaces - Optimum designs - Primary mirrors  - Secondary optimum - SIMPLE method - Software ANSYS - State variables - Structural parameter - Temperature gradient - Thermal control - Thermal deformation - Thermal design

Classification code:921.6 Numerical Methods - 921.5 Optimization Techniques - 741.3 Optical Devices and Systems - 656.2 Space Research - 641.1 Thermodynamics - 422 Strength of Building Materials; Test Equipment and Methods - 421 Strength of Building Materials; Mechanical Properties - 408.1 Structural Design, General - 408 Structural Design

DOI:10.1117/12.899606

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 136>

 

Accession number:20112714124397

Title:X-ray photon-counting detector based on a micro-channel plate for pulsar navigation

Authors:Chen, Baomei (1); Zhao, Baosheng (1); Hu, Huijun (1); Yan, Qiurong (1); Sheng, Lizhi (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (2) Graduate University of Chinese Academy of Sciences, Beijing 100049, China

Corresponding author:Chen, B.(04cbm@live.cn)

Source title:Chinese Optics Letters

Abbreviated source title:Chin. Opt. Lett.

Volume:9

Issue:6

Issue date:June 2011

Publication year:2011

Article number:060401

Language:English

ISSN:16717694

Document type:Journal article (JA)

Publisher:Science Press, 18,Shuangqing Street,Haidian, Beijing, 100085, China

Abstract:The pulse time of arrival (TOA) is a determining parameter for accurate timing and positioning in X-ray pulsar navigation. The pulse TOA can be calculated by comparing the measured arrival time with the predicted arrival time of the X-ray pulse for pulsar. In this study, in order to research the measurement of pulse arrival time, an experimental system is set up. The experimental system comprises a simulator of the X-ray pulsar, an X-ray detector, a time-measurement system, and a data-processing system. An X-ray detector base is proposed on the basis of the micro-channel plate (MCP), which is sensitive to soft X-ray in the 1-10 keV band. The MCP-based detector, the structure and principle of the experimental system, and results of the pulse profile are described in detail. In addition, a discussion of the effects of different X-ray pulse periods and the quantum efficiency of the detector on pulse-profile signal-to-noise ratio (SNR) is presented. Experimental results reveal that the SNR of the measured pulse profile becomes enhanced as the quantum efficiency of the detector increases. The SNR of the pulse profile is higher when the period of the pulse is smaller at the same integral. &copy; 2011 Chinese Optics Letters.

Number of references:15

Main heading:X rays

Controlled terms:Data handling - Detectors - Electromagnetic wave emission - Image storage tubes - Navigation - Plates (structural components) - Quantum efficiency - Signal to noise ratio - X ray apparatus

Uncontrolled terms:Accurate timing - Arrival time - Data-processing system - Experimental system - Micro channel plate - Photon counting - Pulse arrival time - Pulse profile - Pulse time - Signal to noise  - Soft X-ray - X ray pulse - X-ray detector - X-ray pulsars

Classification code:931.4 Quantum Theory; Quantum Mechanics - 914 Safety Engineering - 801 Chemistry - 723.2 Data Processing and Image Processing - 932.1 High Energy Physics - 716.3 Radio Systems and Equipment - 714.1 Electron Tubes - 711 Electromagnetic Waves - 408.2 Structural Members and Shapes - 716.1 Information Theory and Signal Processing

DOI:10.3788/COL201109.060401

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 137>

 

Accession number:20112314046559

Title:Continuous measurement of the arrival times of x-ray photon sequence

Authors:Yan, Qiurong (1); Zhao, Baosheng (1); Sheng, Lizhi (1); Liu, Yongan (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xian Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xian, 710119, China; (2) Graduate University, Chinese Academy of Sciences, Beijing 100049, China

Corresponding author:Yan, Q.(yanqiurong@opt.ac.cn)

Source title:Review of Scientific Instruments

Abbreviated source title:Rev. Sci. Instrum.

Volume:82

Issue:5

Issue date:May 2011

Publication year:2011

Article number:053105

Language:English

ISSN:00346748

CODEN:RSINAK

Document type:Journal article (JA)

Publisher:American Institute of Physics, 2 Huntington Quadrangle, Suite N101, Melville, NY 11747-4502, United States

Abstract:In order to record x-ray pulse profile for x-ray pulsar-based navigation and timing, this paper presents a continuous, high-precision method for measuring arrival times of photon sequence with a common starting point. In this method, a high stability atomic clock is counted to measure the coarse time of arrival photon. A high resolution time-to-digital converter is used to measure the fine time of arrival photon. The coarse times and the fine times are recorded continuously and then transferred to computer memory by way of memory switch. The pulse profile is obtained by a special data processing method. A special circuit was developed and a low-level x-ray pulse profile measurement experiment system was setup. The arrival times of x-ray photon sequence can be consecutively recorded with a time resolution of 500 ps and the profile of x-ray pulse was constructed. The data also can be used for analysis by many other methods, such as statistical distribution of photon events per time interval, statistical distribution of time interval between two photon events, photon counting histogram, autocorrelation and higher order autocorrelation. &copy; 2011 American Institute of Physics.

Number of references:21

Main heading:Photons

Controlled terms:Autocorrelation - Data handling - Frequency converters - X rays

Uncontrolled terms:Arrival time - Coarse time - Computer memories - Continuous measurements - Data processing methods - High resolution - High stability - High-precision - Higher order - Navigation and timing  - Photon counting histograms - Pulse profile - Statistical distribution - Time interval - Time of Arrival - Time resolution - Time to digital converters - Two photon - X ray photons - X ray pulse

Classification code:705.1 Electric Machinery, General - 723.2 Data Processing and Image Processing - 741.1 Light/Optics - 921 Mathematics - 922 Statistical Methods - 932.1 High Energy Physics

DOI:10.1063/1.3592333

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 138>

 

Accession number:20112314028779

Title:Design of an innovative aviation integrated electronic equipment rack

Authors:Chen, Xueyong (1); Zhao, Ning (1); Sun, Shuanhui (2); Wang, Xiaoliang (2)

Author affiliation:(1) Mechanical and Electrical Engineering, Northwestern Polytechnical University, Xi'an, Shanxi, 710068, China; (2) China Aviation Optical-Electrical Technology CO. Ltd., Luoyang Henan, 471003, China

Corresponding author:Chen, X.(chenxueyong@jonhon.cn)

Source title:Advanced Materials Research

Abbreviated source title:Adv. Mater. Res.

Volume:230-232

Monograph title:Frontiers of Manufacturing Science and Measuring Technology

Issue date:2011

Publication year:2011

Pages:1195-1198

Language:English

ISSN:10226680

ISBN-13:9783037851333

Document type:Conference article (CA)

Conference name:2011 International Conference on Frontiers of Manufacturing Science and Measuring Technology, ICFMM 2011

Conference date:June 23, 2011 - June 24, 2011

Conference location:Chongqing, China

Conference code:85006

Sponsor:Control Engineering and Information Science Research Association; Int. Front. Sci. Technol. Res. Assoc.; Trans Tech Publications; Chongqing Xueya Conferences Catering Co., Ltd

Publisher:Trans Tech Publications, P.O. Box 1254, Clausthal-Zellerfeld, D-38670, Germany

Abstract:This design is an open-loop aviation electronic equipment rack based on ARINC600 for a aircraft under only air exhaust condition. Conduct tress and stiffness analysis via ANSYS calculating the maximum stress and the maximum distortion. Calculate the maximum power of electronic equipment suitable for this equipment suitable for this equipment rack through heat transfer theory and provide theory basis for electronic equipment layout on the overall aircraft. &copy; 2011 Trans Tech Publications, Switzerland.

Number of references:5

Main heading:Amplifiers (electronic)

Controlled terms:Aircraft parts and equipment - Aviation - Heat transfer - Heating equipment - Innovation - Manufacture - Oscillators (electronic) - Stiffness

Uncontrolled terms:Air exhaust - ARINC600 - Heat transfer theory - Integrated electronics - Maximum power - Maximum stress - Open loops - Stiffness analysis

Classification code:951 Materials Science - 912 Industrial Engineering and Management - 713.2 Oscillators - 713.1 Amplifiers - 652.3 Aircraft Instruments and Equipment - 642.2 Industrial Furnaces and Components - 641.2 Heat Transfer - 537.1 Heat Treatment Processes - 431.1 Air Transportation, General - 422 Strength of Building Materials; Test Equipment and Methods - 421 Strength of Building Materials; Mechanical Properties

DOI:10.4028/www.scientific.net/AMR.230-232.1195

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 139>

 

Accession number:20113114190325

Title:The competition of the retraction and capillary forces during the dna molecules moving within channels

Authors:Hui, Dan (1); Wang, Kaige (1); Zhao, Xiaojuan (1); Qiao, Qiwei (1); Li, Dan (1); Dang, Weijun (1); Wan, Yun (2); Bai, Jin Tao (1)

Author affiliation:(1) Institute of Photonics and Photonic Technology, Northwest University, Xi'an, 710069, China; (2) State Key Laboratory of Transient Optics and Photonics, CAS, Xi'an 710089, China

Corresponding author:Wang, K.(wangkg@nwu.edu.cn)

Source title:Key Engineering Materials

Abbreviated source title:Key Eng Mat

Volume:483

Monograph title:MEMS/NEMS Nano Technology

Issue date:2011

Publication year:2011

Pages:331-335

Language:English

ISSN:10139826

CODEN:KEMAEY

ISBN-13:9783037851753

Document type:Conference article (CA)

Conference name:12th Annual Conference of the Chinese Society of Micro-Nano Technology, CSMNT and 2nd International Conference of Chinese Society of Micro-Nano Technology

Conference date:October 22, 2010 - October 24, 2010

Conference location:Xi'an, China

Conference code:85717

Publisher:Trans Tech Publications Ltd, Kreuzstrasse 10, Zurich-Durnten, CH-8635, Switzerland

Abstract:The stretching processes of DNA molecules on the hydrophobic planar surfaces and the dynamic processes of DNA molecules moving into the micro- and nano-channels were studied with the fluorescence microscopy associated with the EMCCD in detail. The results demonstrated the ordered stretching of single DNA molecules under the effects of hydrophobic force, which is one of the main force should be considered when the DNA molecules are driven into channels or other nano-structure patterns. &copy; (2011) Trans Tech Publications.

Number of references:17

Main heading:DNA

Controlled terms:Fluorescence microscopy - Hydrophobicity - Molecules - Nanotechnology

Uncontrolled terms:Capillary force - DNA molecules - Dynamic process - EMCCD - Hydrophobic forces - Micro-/Nano-fluidic channels - Nano channels - Planar surface - Retraction force - Single DNA molecules  - Stretching process

Classification code:461.2 Biological Materials and Tissue Engineering - 761 Nanotechnology - 931 Classical Physics; Quantum Theory; Relativity

DOI:10.4028/www.scientific.net/KEM.483.331

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 140>

 

Accession number:20112114009695

Title:Simultaneous sensing of displacement and temperature with a single FBG

Authors:Wei, Ting (1); Qiao, Xue-Guang (1); Jia, Zhen-An (1)

Author affiliation:(1) Shaanxi Laboratory of Photoelectric Sensing Logging, Xi'an Shiyou University, Xi'an 710065, China; (2) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710068, China

Corresponding author:Wei, T.(yolandeweiting@gmail.com)

Source title:Optoelectronics Letters

Abbreviated source title:Optoelectron. Lett.

Volume:7

Issue:1

Issue date:January 2011

Publication year:2011

Pages:0026-0029

Language:English

ISSN:16731905

Document type:Journal article (JA)

Publisher:Springer Verlag, Tiergartenstrasse 17, Heidelberg, D-69121, Germany

Abstract:A novel fiber Bragg grating (FBG) sensor with simultaneous sensing of displacement and temperature is presented. The FBG is affixed on the cantilever inclinedly. The midpoint of FBG exactly coincides with the zero strain layer of a rectangular beam. The vertical displacement can be measured by the broadened bandwidth of FBG as the bandwidth is insensitive to temperature, while the temperature can be measured by the center wavelength shift as the wavelength shift is insensitive to vertical displacement. With 0.1 nm spectral resolution of the analyzer, sensitivities of bandwidth-displacement and center wavelength-temperature are 0.48 nm/mm and 0.05 nm/&deg;C, resolutions are 0.2 mm and 2.0 &deg;C, and sensing ranges of displacement and temperature are up to 8.5 mm and 45&deg;C respectively. Experimental results match theoretical analyses very well. &copy; Tianjin University of Technology and Springer-Verlag Berlin Heidelberg 2011.

Number of references:10

Main heading:Bandwidth

Controlled terms:Fiber Bragg gratings

Uncontrolled terms:Center wavelength - Fiber Bragg grating sensor - Rectangular beams - Sensing ranges - Strain layers - Vertical displacements - Wavelength shift

Classification code:716.1 Information Theory and Signal Processing - 741.3 Optical Devices and Systems

DOI:10.1007/s11801-011-0014-2

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 141>

 

Accession number:20113114207831

Title:High-power fiber laser amplifiers based on a new pump-coupling technology

Authors:Zhao, Baoyin (1); Duan, Kailiang (1); Zhao, Wei (1); Zhang, Entao (1); Hui, Xiangyun (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, Shaanxi 710119, China; (2) Graduate University of Chinese Academy of Sciences, Beijing 100049, China

Corresponding author:Duan, K.(kl.duan@163.com)

Source title:Zhongguo Jiguang/Chinese Journal of Lasers

Abbreviated source title:Zhongguo Jiguang

Volume:38

Issue:7

Issue date:July 2011

Publication year:2011

Article number:0702014

Language:Chinese

ISSN:02587025

CODEN:ZHJIDO

Document type:Journal article (JA)

Publisher:Science Press, 18,Shuangqing Street,Haidian, Beijing, 100085, China

Abstract:By constructing the coupled-mode equations, the mode-coupling characteristics between the passive and active cores within a kind of composite structural fiber (CSF) are studied theoretically. By using the steady-state rate equations and the heat conductive equations, the gain characteristics and the temperature distribution of all-fiber laser amplifiers based on CSF are calculated and analyzed numerically. The results show that the mode-coupling characteristics depend on the coupled modes, the radius and the separation of the two cores of the CSF. Compared with the end-pumped fiber laser amplifiers, the amplifiers based on CSF have a slow pump light absorption and conversion, and thus, have low temperature distribution. This kind of new coupling-pump technology by using CSF is of apparent advantages. It can be used to solve the problem of high temperature of end-pumped fiber amplifiers, and thereby provides a new approach to design higher power fiber lasers and fiber amplifiers.

Number of references:22

Main heading:Fiber amplifiers

Controlled terms:Electromagnetic coupling - Equations of state - Fibers - Light absorption - Pumping (laser) - Pumps - Slow light - Temperature distribution - Thermoanalysis

Uncontrolled terms:All-fiber lasers - Coupled mode - Coupled mode equation - End-pump - End-pumped - Fiber laser amplifier - Gain characteristic - High power fiber lasers - High temperature - Laser amplifiers  - Mode coupling - Power fiber lasers - Pump light - Steady state rates - Structural fibers

Classification code:817 Plastics and Other Polymers: Products and Applications - 812 Ceramics, Refractories and Glass - 801 Chemistry - 744.4 Solid State Lasers - 744.1 Lasers, General - 921 Mathematics - 741.1.2 Fiber Optics - 705 Electric Generators and Motors - 704 Electric Components and Equipment - 641.1 Thermodynamics - 618.2 Pumps - 741.1 Light/Optics

DOI:10.3788/CJL201138.0702014

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 142>

 

Accession number:20110413627604

Title:Abrupt transition from wavelength structure to subwavelength structure in a single-crystal superalloy induced by femtosecond laser

Authors:Zhang, Wei (1); Cheng, Guanghua (2); Feng, Qiang (1); Cao, Lamei (4); Wang, Fengping (5); Hui, Rongqing (6)

Author affiliation:(1) State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, 30 Xueyuan Road, Beijing 100083, Haidian District, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an Shaanxi 710119, China; (3) National Center for Materials Service Safety, University of Science and Technology Beijing, Beijing 100083, China; (4) National Key Laboratory of Science and Technology on Advanced High Temperature Structural Materials, Beijing Institute of Aeronautical Materials, Beijing 100095, China; (5) Applied Science School, University of Science and Technology Beijing, Beijing 100083, China; (6) Department of Electrical Engineering and Computer Science, University of Kansas, Lawrence, KS 66044, United States

Corresponding author:Feng, Q.(qfeng@skl.ustb.edu.cn)

Source title:Applied Surface Science

Abbreviated source title:Appl Surf Sci

Volume:257

Issue:9

Issue date:February 15, 2011

Publication year:2011

Pages:4321-4324

Language:English

ISSN:01694332

CODEN:ASUSEE

Document type:Journal article (JA)

Publisher:Elsevier, P.O. Box 211, Amsterdam, 1000 AE, Netherlands

Abstract:The abrupt transition from low-spatial-frequency laser-induced periodic surface structure (LSFL) to high-spatial-frequency laser-induced periodic surface structure (HSFL) in single-crystal superalloy CMSX-4 during femtosecond laser irradiation has been reported. Microstructural investigations indicate that the transition was initiated by the generation of new grooves on the main ridges of LSFL ripples. This transition resulted in the period of HSFL nearly equal to half of LSFL period. Furthermore, the relationship between both LSFL and HSFL and their parametric dependence was established. The microstructural observation of the abrupt transition provides a morphological evidence of second harmonic generation being responsible for the formation of HSFL. &copy; 2010 Elsevier B.V.

Number of references:10

Main heading:Harmonic generation

Controlled terms:Crystal structure - Harmonic analysis - Nonlinear optics - Periodic structures - Superalloys - Surface structure - Ultrashort pulses

Uncontrolled terms:Abrupt transition - Femto-second laser - Femtosecond laser irradiation - Laser-induced periodic surface structures - Microstructural investigation - Microstructural observations - Parametric dependence - Second harmonic generation - Single crystal superalloys - Sub-wavelength structures

Classification code:951 Materials Science - 933.1.1 Crystal Lattice - 933 Solid State Physics - 921.6 Numerical Methods - 751.1 Acoustic Waves - 744.1 Lasers, General - 741.1.1 Nonlinear Optics - 531.2 Metallography - 531 Metallurgy and Metallography

DOI:10.1016/j.apsusc.2010.12.050

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 143>

 

Accession number:20112314036739

Title:Comparison of pulse evolutions in low and ultra-large anomalous dispersion mode-locked fiber lasers

Authors:Duan, L.N. (1); Liu, X.M. (1); Wang, L.R. (1); Mao, D. (1); Wang, G.X. (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China

Corresponding author:Duan, L. N.

Source title:Laser Physics

Abbreviated source title:Laser Phys.

Volume:21

Issue:5

Issue date:May 2011

Publication year:2011

Pages:948-953

Language:English

ISSN:1054660X

E-ISSN:15556611

Document type:Journal article (JA)

Publisher:Maik Nauka-Interperiodica Publishing, Profsoyuznaya Ul 90, Moscow, 117997, Russia

Abstract:We have investigated and compared the pulse evolutions in low and ultra-large anomalous dispersion erbium-doped fiber lasers mode-locked by the nonlinear polarization rotation technique. Two lasers deliver the pulses that exhibit quite distinct characteristics such as pulse duration, spectral width, and spectral sidebands. Experimental observations show that the spectral width decreases from several nanometers to less than one nanometer whereas pulse duration extends about three times by changing the cavity dispersion from -0.03 to -15.50 ps². The solitons in ultra-large anomalous fiber laser show dips in the optical spectrum, which is quite distinct from that of conventional solitons observed in low anomalous regime. &copy; 2011 Pleiades Publishing, Ltd.

Number of references:39

Main heading:Mode-locked fiber lasers

Controlled terms:Dispersions - Erbium - Fiber lasers - Solitons

Uncontrolled terms:Anomalous dispersion - Anomalous regimes - Erbium doped fiber laser - Experimental observation - Mode-locked - Nonlinear polarization rotation - Optical spectra - Pulse durations - Pulse evolution - Spectral sidebands  - Spectral widths

Classification code:547.2 Rare Earth Metals - 744.1 Lasers, General - 744.4 Solid State Lasers - 931.3 Atomic and Molecular Physics - 951 Materials Science

DOI:10.1134/S1054660X11090052

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 144>

 

Accession number:20111613922672

Title:Design and experiment of a novel high-power optical fiber isolator

Authors:Chen, Xing (1); Zhang, Wen-Song (2); Hu, Man-Li (1); Liu, Lan-Shu (2); Wang, Jian (1); Wang, Shan-Li (1)

Author affiliation:(1) Department of Physics, Northwest University, Xi'an 710069, China; (2) State Key Laboratory of Transient Optics Technology, Xi'an Institute of Optics and Precision Mechanics, Chinese Acad. of Sci., Xi'an 710119, China

Corresponding author:Chen, X.

Source title:Guangdianzi Jiguang/Journal of Optoelectronics Laser

Abbreviated source title:Guangdianzi Jiguang

Volume:22

Issue:3

Issue date:March 2011

Publication year:2011

Pages:368-371

Language:Chinese

ISSN:10050086

CODEN:GUJIE9

Document type:Journal article (JA)

Publisher:Board of Optronics Lasers, No. 47 Yang-Liu-Qing Ying-Jian Road, Tian-Jin City, 300380, China

Abstract:Based on the spherical lens and terbium gallium garnet(TGG), a novel optical fiber isolator with high-power is designed, which can fully meet the requirements of the high-power fiber laser. Within the wavelength range of 1064&plusmn;15 nm, the measured results show that the insertion loss is below 0.61 dB, the isolation is larger than 24.5 dB and the laser can work stably when the input power is 45 W.

Number of references:16

Main heading:Lenses

Controlled terms:Fiber lasers - Gallium - Garnets - Optical fibers - Optical instruments - Silicate minerals - Spheres - Terbium

Uncontrolled terms:High power fiber lasers - High-power - Input power - Isolator - Measured results - Spherical lens - Wavelength ranges

Classification code:482.2 Minerals - 547.2 Rare Earth Metals - 549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals - 631 Fluid Flow - 741.1.2 Fiber Optics - 741.3 Optical Devices and Systems

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 145>

 

Accession number:20111513901548

Title:A gradient anodic oxidation method for treating polyacrylonitrile-based high-modulus carbon fibers

Authors:Hou, Yongping (1); Sun, Tongqing (2); Wang, Haojing (3)

Author affiliation:(1) School of Chemistry and Environment, Beijing University of Aeronautics and Astronautics, Beijing 100191, China; (2) Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China; (3) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China

Corresponding author:Hou, Y.(yongpinghou04@yahoo.com.cn)

Source title:Journal of Applied Polymer Science

Abbreviated source title:J. Appl. Polym. Sci.

Volume:121

Issue:2

Issue date:July 15, 2011

Publication year:2011

Pages:1059-1066

Language:English

ISSN:00218995

E-ISSN:10974628

CODEN:JAPNAB

Document type:Journal article (JA)

Publisher:John Wiley and Sons Inc., P.O.Box 18667, Newark, NJ 07191-8667, United States

Abstract:We describe a gradient anodic oxidation method. Polyacrylonitrile-based high-modulus carbon fibers were treated by the conventional and gradient anodic oxidation methods. The results show that the carbon fibers treated by the gradient method possessed a more stable tensile strength, larger NaOH uptake, shallower striations, flatter fracture surface of composites, and better interlaminar shear strength compared to those treated by the conventional method. This indicated that the gradient method was more effective in restricting the etching reaction and improving the adhesion between the carbon fibers and matrix, and we give a suggested explanation of the mechanisms. &copy; 2011 Wiley Periodicals, Inc.

Number of references:35

Main heading:Anodic oxidation

Controlled terms:Carbon fibers - Electrochemistry - Fibers - Gradient methods - Shear strength - Tensile strength

Uncontrolled terms:Anodic oxidation method - Conventional methods - Etching reaction - Fracture surfaces - High modulus carbon fiber - interfaces - Interlaminar shear strength - matrix - surface modification

Classification code:817 Plastics and Other Polymers: Products and Applications - 812 Ceramics, Refractories and Glass - 804 Chemical Products Generally - 921.6 Numerical Methods - 802.2 Chemical Reactions - 422 Strength of Building Materials; Test Equipment and Methods - 421 Strength of Building Materials; Mechanical Properties - 801.4.1 Electrochemistry

DOI:10.1002/app.33761

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 146>

 

Accession number:20110413617938

Title:Shifting the spherical focus of a 4Pi focusing system

Authors:Yan, Shaohui (1); Yao, Baoli (1); Rupp, Romano (2)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xian Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xian 710119, China; (2) Faculty of Physics, University of Vienna, Boltzmanngasse 5, A-1090 Vienna, Austria

Corresponding author:Yan, S.

Source title:Optics Express

Abbreviated source title:Opt. Express

Volume:19

Issue:2

Issue date:January 17, 2011

Publication year:2011

Pages:673-678

Language:English

E-ISSN:10944087

Document type:Journal article (JA)

Publisher:Optical Society of America, 2010 Massachusetts Ave, NW, Washington, DC, DC 20036-1023, United States

Abstract:In a 4Pi focusing system radially polarized laser beams can be focused to a spherical focal spot. For many applications, e.g., for moving trapped particles or for scanning a specimen, one would like to change the position of focal spot along the optical axis without moving lenses or laser beams. We demonstrate how this can be achieved by modulating the phase of the input field at the pupil plane of the lens. The required phase modulation function is determined by spherical wave expansion of the plane wave factors in the Richards-Wolf integral. &copy; 2011 Optical Society of America.

Number of references:16

Main heading:Focusing

Controlled terms:Laser beams - Lenses - Optical instruments - Phase modulation - Spheres

Uncontrolled terms:Focal spot - Focusing system - Input field - Modulation functions - Optical axis - Plane wave - Pupil planes - Radially polarized laser beam - Spherical wave expansion - Trapped particle

Classification code:631 Fluid Flow - 716 Telecommunication; Radar, Radio and Television - 741.1 Light/Optics - 741.3 Optical Devices and Systems - 744.8 Laser Beam Interactions

DOI:10.1364/OE.19.000673

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 147>

 

Accession number:20114614511971

Title:Non-absorption grating approach for X-ray phase contrast imaging

Authors:Du, Yang (1); Liu, Xin (1); Lei, Yaohu (1); Guo, Jinchuan (1); Niu, Hanben (1)

Author affiliation:(1) Key Laboratory of Opto electronics Devices and Systems, Ministry of Education and Guangdong Province, Shenzhen University, Shenzhen 518060, China; (2) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China

Corresponding author:Du, Y.

Source title:Optics Express

Abbreviated source title:Opt. Express

Volume:19

Issue:23

Issue date:November 7, 2011

Publication year:2011

Pages:22669-22674

Language:English

E-ISSN:10944087

Document type:Journal article (JA)

Publisher:Optical Society of America, 2010 Massachusetts Ave, NW, Washington, DC, DC 20036-1023, United States

Abstract:we demonstrate a non-absorption grating approach for X-ray phase contrast imaging based-on grating interferometry. This technique overcomes the limitations imposed by absorption gratings, provides another choice for X-ray phase contrast imaging and potentially improves the image quality for higher X-ray photon energies. We constructed the key devices, established the system and obtained phase contrast images with a field of view larger than 5 centimeters, which is the limitation imposed by the size of our current CCD detector. This method has no need for absorption gratings, which represents a significant development for future promising applications in medicine and industry. &copy; 2011 Optical Society of America.

Number of references:30

Main heading:X rays

Controlled terms:Absorption - Image quality

Uncontrolled terms:CCD detectors - Field of views - Grating interferometry - Phase-contrast image - X-ray phase-contrast imaging - X-ray photon energy

Classification code:741 Light, Optics and Optical Devices - 931.2 Physical Properties of Gases, Liquids and Solids - 932.1 High Energy Physics

DOI:10.1364/OE.19.022669

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 148>

 

Accession number:20120214678732

Title:A fine resampling algorithm for general particle filters

Authors:Cao, Bei (1); Ma, CaiWen (1); Liu, ZhenTao (3)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics of CAS, Xi'an, China; (2) Graduate University of CAS, Beijing, China; (3) School of Electronic Engineering, Xi'an University of Post and Telecommunications, Xi'an, China

Corresponding author:Cao, B.

Source title:Proceedings - 4th International Congress on Image and Signal Processing, CISP 2011

Abbreviated source title:Proc. - Int. Congr. Image Signal Process., CISP

Volume:5

Monograph title:Proceedings - 4th International Congress on Image and Signal Processing, CISP 2011

Issue date:2011

Publication year:2011

Pages:2695-2699

Article number:6100779

Language:English

ISBN-13:9781424493067

Document type:Conference article (CA)

Conference name:4th International Congress on Image and Signal Processing, CISP 2011

Conference date:October 15, 2011 - October 17, 2011

Conference location:Shanghai, China

Conference code:88002

Sponsor:Donghua University

Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States

Abstract:Resampling algorithm for particle filters aimed at solving particle degeneracy problem but causing sample impoverishment. To maintain the diversity of the particle system and thus enhance the accuracy of state estimation in the nonlinear/non-Gaussian models, the paper proposed an improved resampling algorithm for general particle filters, called as PF-FR (Particle Filters with Fine Resampling). By introducing distance-comparing process and generating new particle based on optimized combination scheme, PF-FR algorithm overcomes the defects of general resampling algorithm. Simulations prove that the proposed PF-FR algorithm can effectively avoid sample impoverishment and simultaneously solve the degeneracy problem, thereby improving the estimation accuracy evidently. As a consequence, PF-FR algorithm is an effective alternative to resampling algorithm. &copy; 2011 IEEE.

Number of references:12

Main heading:Algorithms

Controlled terms:Distributed computer systems - Nonlinear filtering - Optimization - Signal processing - State estimation - Target tracking

Uncontrolled terms:optimized combination - particle degeneracy - particle filter - Resampling - Sample impoverishment

Classification code:921.5 Optimization Techniques - 921 Mathematics - 731.1 Control Systems - 723 Computer Software, Data Handling and Applications - 722.4 Digital Computers and Systems - 716.2 Radar Systems and Equipment - 716.1 Information Theory and Signal Processing

DOI:10.1109/CISP.2011.6100779

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 149>

 

Accession number:20112414066616

Title:Designs of multipass optical configurations based on the use of a cube corner retroreflector in the interferometer

Authors:Wei, Ruyi (1); Zhang, Xuemin (2); Zhou, Jinsong (4); Zhou, Sizhong (2)

Author affiliation:(1) Key Laboratory of Spectral Imaging Technology, Chinese Academy of Sciences, Xi'an 710119, China; (2) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (3) Graduate University, Chinese Academy of Sciences, Beijing 100039, China; (4) Academy of Opto-Electronics, Chinese Academy of Sciences, Beijing 100190, China

Corresponding author:Wei, R.(weiruyi5@yahoo.com.cn)

Source title:Applied Optics

Abbreviated source title:Appl. Opt.

Volume:50

Issue:12

Issue date:April 20, 2011

Publication year:2011

Pages:1673-1681

Language:English

ISSN:1559128X

E-ISSN:15394522

CODEN:APOPAI

Document type:Journal article (JA)

Publisher:Optical Society of America, 2010 Massachusetts Ave, NW, Washington, DC, DC 20036-1023, United States

Abstract:We describe designs of the multipass optical configurations of an interferometer with high spectral resolution with respect to 6, 12, and 24 times more optical passes than the conventional Michelson interferometer. In each design, a movable cube corner retroreflector is combined with a folding reflector group (FRG) as the interferometer's moving combination to implement the multipass optical configuration with the characteristic of surface division. Analyses reveal that when there are 12 or more optical passes, the net effect of the ray's angular deviation of the entire moving combination amounts to only the alignment error of one of the reflectors in the FRG, demonstrating the self-aligning property of the interferometer. &copy; 2011 Optical Society of America.

Number of references:21

Main heading:Design

Controlled terms:Michelson interferometers - Reflection

Uncontrolled terms:Alignment error - Angular deviations - Cube corner retroreflector - High spectral resolution - Multi-pass - Net effect - Optical configurations - Self-aligning - Surface division

Classification code:408 Structural Design - 711 Electromagnetic Waves - 941.3 Optical Instruments

DOI:10.1364/AO.50.001673

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 150>

 

Accession number:20112013986278

Title:Detection and correction of linear phase error for Fourier transform spectrometer using phase correction method

Authors:Wang, Cailing (1); Li, Yushan (2); Liu, Xuebin (1); Hu, Bingliang (1); Liu, Caifang (1)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics of CAS, New Industrial Park, NO.17 Xinxi Rd., Xi'an Hi-Tech Indust. Development Zone, Xi'an, Shaanxi, China; (2) Institute of Electronic CAD, Xi'dian University, NO.2 TaibaiRoad, Xi'an, Shaanxi, China

Corresponding author:Wang, C.(azering@opt.ac.cn)

Source title:Advanced Materials Research

Abbreviated source title:Adv. Mater. Res.

Volume:225-226

Monograph title:Advanced Research on Automation, Communication, Architectonics and Materials

Issue date:2011

Publication year:2011

Pages:293-296

Language:English

ISSN:10226680

ISBN-13:9783037851036

Document type:Conference article (CA)

Conference name:2011 International Conference on Automation, Communication, Architectonics and Materials, ACAM2011

Conference date:June 18, 2011 - June 19, 2011

Conference location:Wuhan, China

Conference code:84812

Sponsor:International Science and Education Researcher Association (ISER); Yellow River Conservancy Technical Institute; Beijing Gireida Education Co.Ltd.; Beijing Gireida Education Research Center

Publisher:Trans Tech Publications, P.O. Box 1254, Clausthal-Zellerfeld, D-38670, Germany

Abstract:Idealy, an interferogram is an even function of the path differences; it suffices to computer the cosine Fourier transform of the interferogram from the zero optical path to the max to produce the spectrum. However, the interferogram is always asymmetry of the scanning function in reality. A method for the phase correction of interferograms in Fourier transform is presented. It is shown that phase error can be canceled to within an arbitrary angular precision by phase correction method. Three original spectrums are provided in which phase correction over a frequency range of 400nm to 1000nm ,they are shown that using Phase Correction Method resulted in a error is less than those of the Mertz Method, and the purchased time is much less than the Mertz Method. The method can be used in most experiments, including emission spectroscopy, where conventional techniques are inadequate. &copy; (2011) Trans Tech Publications.

Number of references:14

Main heading:Fourier transforms

Controlled terms:Bolometers - Electromagnetic wave attenuation - Emission spectroscopy - Error detection - Interferometry - Spacecraft instruments - Spectrometers - Spectrometry

Uncontrolled terms:Conventional techniques - Fourier transform spectrometers - Frequency ranges - Interferograms - Linear phase - Mertz method - Optical path - Phase correction - Phase corrections - Phase correlation  - Phase error

Classification code:944.7 Radiation Measuring Instruments - 941.4 Optical Variables Measurements - 921.3 Mathematical Transformations - 801 Chemistry - 721.1 Computer Theory, Includes Formal Logic, Automata Theory, Switching Theory, Programming Theory - 711 Electromagnetic Waves - 655.1 Spacecraft, General

DOI:10.4028/www.scientific.net/AMR.225-226.293

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 151>

 

Accession number:20113214222749

Title:Infrared thermogrphy non-destructive testing of composite materials

Authors:Wu, Cuiqin (1); Wang, Weiping (1); Yuan, Qigang (1); Li, Yanjun (2); Zhang, Wei (3); Zhang, Xiangdong (4)

Author affiliation:(1) SICON OPTO-Electonic LTD., Xi'an 710043, China; (2) Northwestern Polytechnical University, Xi'an 710065, China; (3) Xi'an Research Inst. of Hi-Tech., Hongqing Town, Xi'an 710025, China; (4) No.203 Research Institute of China Ordance Industries, Xi'an 710068, China

Corresponding author:Wu, C.(cuiqin_wu@163.com)

Source title:Advanced Materials Research

Abbreviated source title:Adv. Mater. Res.

Volume:291-294

Monograph title:Materials Processing Technology

Issue date:2011

Publication year:2011

Pages:1307-1310

Language:English

ISSN:10226680

ISBN-13:9783037851937

Document type:Conference article (CA)

Conference name:2011 International Conference on Advanced Engineering Materials and Technology, AEMT 2011

Conference date:July 29, 2011 - July 31, 2011

Conference location:Sanya, China

Conference code:85968

Publisher:Trans Tech Publications, P.O. Box 1254, Clausthal-Zellerfeld, D-38670, Germany

Abstract:To detect the delamination, disband, inclusion defects of the glass fiber composite materials applied in the solid rocket motor, active infrared thermographic non-destructive testing(NDT) is researched. The samples including known defects are heated by pulsed high energy flash lamp. The surface temperature of the samples is monitored by infrared thermography camera. The results of the experiments show that the active infrared thermography technique is a fast and effective inspection method for detecting the defects of delamination, disband, inclusion of the composites. The samples are also detected by underwater ultrasonic c-scans. The paper concludes that the active infrared thermography NDT is more suitable to rapidly detect the defect in large-area and the underwater ultrasonic c-scans is more suitable to quantitatively identify the defect in local-area. &copy; (2011) Trans Tech Publications, Switzerland.

Number of references:4

Main heading:Nondestructive examination

Controlled terms:Composite materials - Defects - Glass fibers - Inspection - Materials testing - Rocket engines - Rockets - Steel sheet - Thermography (imaging) - Thermography (temperature measurement)  - Ultrasonic applications - Ultrasonics

Uncontrolled terms:Active infrared thermography - Flash lamp - Glass fiber composites - High energy - Inclusion defects - Inspection methods - Non destructive testing - Solid rocket motors - Surface temperatures - Ultrasonic c-scan

Classification code:742.1 Photography - 753.1 Ultrasonic Waves - 753.3 Ultrasonic Applications - 811 Cellulose, Paper and Wood Products - 913.3.1 Inspection - 944.6 Temperature Measurements - 951 Materials Science - 654.2 Rocket Engines - 413 Insulating Materials - 415 Metals, Plastics, Wood and Other Structural Materials - 421 Strength of Building Materials; Mechanical Properties - 422 Strength of Building Materials; Test Equipment and Methods - 423 Non Mechanical Properties and Tests of Building Materials - 545.3 Steel - 654.1 Rockets and Missiles

DOI:10.4028/www.scientific.net/AMR.291-294.1307

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 152>

 

Accession number:20114114411796

Title:Guiding and confining light in low-index circularly symmetric waveguides

Authors:Zhang, Wenfu (1); Mu, Jian-Wei (3); Huang, Wei-Ping (3); Zhao, Wei (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, China; (2) Department of Electrical and Computer Engineering, McMaster University, Hamilton, ON L8S 4K1, Canada; (3) Graduate School, Chinese Academy of Sciences, Beijing 100049, China

Corresponding author:Zhang, W.(wfu.zhang@gmail.com)

Source title:IEEE Photonics Journal

Abbreviated source title:IEEE Photon. J.

Volume:3

Issue:5

Issue date:2011

Publication year:2011

Pages:854-860

Article number:6017083

Language:English

ISSN:19430655

Document type:Journal article (JA)

Publisher:Institute of Electrical and Electronics Engineers Inc., 445 Hoes Lane / P.O. Box 1331, Piscataway, NJ 08855-1331, United States

Abstract:A circularly symmetric waveguide with a low-index ring inside the core has been proposed and studied comprehensively. By taking advantage of the azimuthal TM01 mode, the structure can confine light inside the low-index region with very high power confinement efficiency. Key characteristic parameters as functions of geometry factors have been investigated through rigorous finite-difference methods. The fabrication tolerance and the material candidate for various potential applications have been discussed. &copy; 2009 IEEE.

Number of references:27

Main heading:Waveguides

Controlled terms:Nanowires

Uncontrolled terms:Fabrication tolerances - Geometry factors - High-power - Key characteristics - Material candidate - Potential applications - Sub-wavelength structures - Symmetric waveguides - TM01 mode

Classification code:714.3 Waveguides - 761 Nanotechnology - 933 Solid State Physics

DOI:10.1109/JPHOT.2011.2167602

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 153>

 

Accession number:20114114420333

Title:Design of catadioptric middle infrared continuous zoom lens for uncooled infrared detector

Authors:Jiang, Kai (1); Zhou, Si-Zhong (1); Duan, Jing (1); Wang, Yan-Bin (1); Zhang, Heng-Jin (1)

Author affiliation:(1) Photoelectric Measurement and Control Technology Research Department, Xi'an Institute of Optics and Precision Mechanics, CAS, Xi'an 710119, China

Corresponding author:Jiang, K.(Jiangkai2008.jj@163.com)

Source title:Proceedings of SPIE - The International Society for Optical Engineering

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:8193

Monograph title:International Symposium on Photoelectronic Detection and Imaging 2011: Advances in Infrared Imaging and Applications

Issue date:2011

Publication year:2011

Article number:81931U

Language:English

ISSN:0277786X

CODEN:PSISDG

ISBN-13:9780819488343

Document type:Conference article (CA)

Conference name:International Symposium on Photoelectronic Detection and Imaging 2011: Advances in Infrared Imaging and Applications

Conference date:May 24, 2011 - May 24, 2011

Conference location:Beijing, China

Conference code:86819

Sponsor:Chinese Society of Astronautics

Publisher:SPIE, P.O. Box 10, Bellingham, WA 98227-0010, United States

Abstract:For uncooled 320x240 infrared detector, a catadioptric middle infrared continuous zoom lens is presented. The optical system is divided into three segments. First of all, a reflective system is designed as the front system. Then the continuous zoom lens which matches with the reflective system as the back system is designed. The conversed back system is assembled at the first imaging of the optical system with the reflective system. A continuous variable magnification catadiootric telescope is obtained. Projection objective is designed based on the telescope lastly. To ensure the imaging quality of the system, the whole system is optimized with the CODE V software. The system can realize 200mm&sim;800mm continuous zoom. The designed result shows the system has the advantages of simple structure, short zoom path and smooth zoom locus, high image quality and approached or reached to the diffraction limit. &copy; 2011 Copyright Society of Photo-Optical Instrumentation Engineers (SPIE).

Number of references:11

Main heading:Optical systems

Controlled terms:Detectors - Image quality - Infrared detectors - Infrared imaging - Infrared radiation - Optical design - Optical telescopes - Telescopes

Uncontrolled terms:Catadioptric - Continuous variables - Continuous zoom - Diffraction limits - High image quality - Imaging quality - Middle infrared - Reflective systems - Simple structures - Uncooled  - Uncooled infrared detectors - Zoom lens

Classification code:741 Light, Optics and Optical Devices - 914 Safety Engineering

DOI:10.1117/12.900193

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 154>

 

Accession number:20113914362052

Title:Accelerating vehicle detection in low-altitude airborne urban video

Authors:Cao, Xianbin (1); Lin, Renjun (1); Yan, Pingkun (2); Li, Xuelong (2)

Author affiliation:(1) Anhui Province Key Laboratory of Software In Computing and Communication, School of Computer Science and Technology, University of Science and Technology of China, Hefei, 230027, Anhui, China; (2) State Key Laboratory of Transient Optics and Photonics, Center for OPTical IMagery Analysis and Learning (OPTIMAL), Xi'an Institute of Optics and Precision Mechanics Chinese Academy of Sciences, Xi'an, 710119, Shaanxi, China

Corresponding author:Cao, X.(xbcao@buaa.edu.cn)

Source title:Proceedings - 6th International Conference on Image and Graphics, ICIG 2011

Abbreviated source title:Proc. - Int. Conf. Image Graph., ICIG

Monograph title:Proceedings - 6th International Conference on Image and Graphics, ICIG 2011

Issue date:2011

Publication year:2011

Pages:648-653

Article number:6005869

Language:English

ISBN-13:9780769545417

Document type:Conference article (CA)

Conference name:6th International Conference on Image and Graphics, ICIG 2011

Conference date:August 12, 2011 - August 15, 2011

Conference location:Hefei, Anhui, China

Conference code:86574

Sponsor:National Natural Science Foundation of China; Chinese Academy of Science; Microsoft Research Asia; Xian Institute of Optics and Precision Mechanics of CAS; Anhui Crearo Technology Co., Ltd

Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States

Abstract:The limitation of the existing methods of traffic data collection is that they rely on techniques that are strictly local in nature. The airborne system in unmanned aircrafts provides the advantages of wider view angle and higher mobility. However, detecting vehicles in airborne videos is a challenging task because of the scene complexity and platform movement. Most of the techniques used in stationary platforms cannot perform well in this situation. A new and efficient method based on Bayes model is proposed in this paper. This method can be divided into two stages, attention focus extraction and vehicle classification. Experimental results demonstrated that, compared with other representative algorithms, our method obtained better performance with higher detection rate, lower false positive rate and faster detection speed. &copy; 2011 IEEE.

Number of references:7

Main heading:Vehicles

Controlled terms:Adaptive boosting

Uncontrolled terms:Airborne Systems - Airborne video - Attension focus extraction - Attention focus - Bayes models - Detection rates - Efficient method - False positive rates - Low-altitude - Scene complexity  - Stationary platforms - Techniques used - Traffic data collection - Two stage - Unmanned aircrafts - Vehicle classification - Vehicle detection

Classification code:432 Highway Transportation - 723 Computer Software, Data Handling and Applications

DOI:10.1109/ICIG.2011.93

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 155>

 

Accession number:20120514729838

Title:Single image super resolution with high resolution dictionary

Authors:Mu, Guangwu (1); Gao, Xinbo (1); Zhang, Kaibing (1); Li, Xuelong (2); Tao, Dacheng (2)

Author affiliation:(1) School of Electronic Engineering, Xidian University, Xi'an 710071, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, Shaanxi, China

Corresponding author:Mu, G.

Source title:Proceedings - International Conference on Image Processing, ICIP

Abbreviated source title:Proc. Int. Conf. Image Process. ICIP

Monograph title:ICIP 2011: 2011 18th IEEE International Conference on Image Processing

Issue date:2011

Publication year:2011

Pages:1141-1144

Article number:6115630

Language:English

ISSN:15224880

ISBN-13:9781457713033

Document type:Conference article (CA)

Conference name:2011 18th IEEE International Conference on Image Processing, ICIP 2011

Conference date:September 11, 2011 - September 14, 2011

Conference location:Brussels, Belgium

Conference code:88213

Sponsor:IEEE; IEEE Signal Processing Society

Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States

Abstract:Image super resolution (SR) is a technique to estimate or synthesize a high resolution (HR) image from one or several low resolution (LR) images. This paper proposes a novel framework for single image super resolution based on sparse representation with high resolution dictionary. Unlike the previous methods, the training set is constructed from the HR images instead of HR-LR image pairs. Due to this property, there is no need to retrain a new dictionary when the zooming factor changed. Given a testing LR image, the patch-based representation coefficients and the desired image are estimated alternately through the use of dynamic group sparsity, the fidelity term and the non-local means regularization. Experimental results demonstrate the effectiveness of the proposed algorithm. &copy; 2011 IEEE.

Number of references:7

Main heading:Image processing

Controlled terms:Algorithms

Uncontrolled terms:Dynamic groups - Fidelity term - High resolution - High resolution image - Image pairs - Image super resolutions - Low resolution images - Nonlocal - Single images - sparse representation  - Super resolution - Training sets

Classification code:723 Computer Software, Data Handling and Applications - 741 Light, Optics and Optical Devices - 921 Mathematics

DOI:10.1109/ICIP.2011.6115630

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 156>

 

Accession number:20120114657572

Title:Broadband near-infrared emission in Tm³⁺-Dy³⁺ codoped amorphous chalcohalide films fabricated by pulsed laser deposition

Authors:Yang, Senlin (1); Wang, Xuefeng (1); Guo, Haitao (2); Dong, Guoping (3); Peng, Bo (2); Qiu, Jianrong (3); Zhang, Rong (1); Shi, Yi (1)

Author affiliation:(1) National Laboratory of Solid State Microstructures, School of Electronic Science and Engineering, Nanjing University, Nanjing 210093, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (3) School of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, China

Corresponding author:Yang, S.

Source title:Optics Express

Abbreviated source title:Opt. Express

Volume:19

Issue:27

Issue date:December 19, 2011

Publication year:2011

Pages:26529-26535

Language:English

E-ISSN:10944087

Document type:Journal article (JA)

Publisher:Optical Society of America, 2010 Massachusetts Ave, NW, Washington, DC, DC 20036-1023, United States

Abstract:Structural and near-infrared (NIR) emission properties were investigated in the Tm³⁺-Dy³⁺ codoped Ge-Ga-based amorphous chalcohalide films fabricated by pulsed laser deposition. The homogeneous films illustrated similar random network to the glass target according to the measurements of X-ray diffraction, X-ray photoelectron spectroscopy, and Raman spectroscopy. An 808 nm laser diode pumping generated a superbroadband NIR emission ranging from 1050 to 1570 nm and the other intense broadband NIR emission centered at &sim;1800 nm, which was attributed to the efficient energy transfer from Tm ³⁺ to Dy³⁺ ions. This was further verified by the broad-range excitation measurements near the Urbach optical-absorption edge involved defect states. The results shed light on the potential highly integrated planar optical device applications of the codoped amorphous chalcohalide films. &copy; 2011 Optical Society of America.

Number of references:36

Main heading:Pulsed lasers

Controlled terms:Amorphous films - Energy transfer - Germanium - Infrared devices - Optical pumping - Pulsed laser deposition - Raman spectroscopy - X ray diffraction - X ray photoelectron spectroscopy

Uncontrolled terms:Co-doped - Defect state - Efficient energy transfer - Excitation measurements - Highly integrated - Homogeneous films - Laser diode pumping - Near-infrared emissions - NIR emission - Optical absorption edge  - Planar optical devices - Random network - Superbroadband

Classification code:933.2 Amorphous Solids - 933.1.1 Crystal Lattice - 804 Chemical Products Generally - 801 Chemistry - 744.9 Laser Applications - 744.1 Lasers, General - 741.3 Optical Devices and Systems - 741.1 Light/Optics - 641.2 Heat Transfer

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 157>

 

Accession number:20113914366057

Title:Optical bistability in metal-insulator-metal plasmonic waveguide with nanodisk resonator containing Kerr nonlinear medium

Authors:Wang, Guoxi (1); Lu, Hua (1); Liu, Xueming (1); Gong, Yongkang (1); Wang, Leiran (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China

Corresponding author:Liu, X.(liuxueming72@yahoo.com)

Source title:Applied Optics

Abbreviated source title:Appl. Opt.

Volume:50

Issue:27

Issue date:September 20, 2011

Publication year:2011

Pages:5287-5290

Language:English

ISSN:1559128X

E-ISSN:15394522

CODEN:APOPAI

Document type:Journal article (JA)

Publisher:Optical Society of America, 2010 Massachusetts Ave, NW, Washington, DC, DC 20036-1023, United States

Abstract:We numerically investigate the optical bistability effect in the metal-insulator-metal waveguide with a nanodisk resonator containing a Kerr nonlinear medium. It is found that the increase of the refractive index, which is induced by enhancing the incident intensity, can cause a redshift for the resonance wavelength. The local resonant field excited in the nanodisk cavity can significantly increase the Kerr nonlinear effect. In addition, an obvious bistability loop is observed in the proposed structure. This nonlinear structure can find important applications for all-optical switching in highly integrated optical circuits. &copy; 2011 Optical Society of America.

Number of references:35

Main heading:Optical Kerr effect

Controlled terms:Metal insulator boundaries - Metals - MIM devices - Nonlinear optics - Nonlinear systems - Optical waveguides - Photonic integration technology - Refractive index - Resonators - Semiconductor insulator boundaries  - Waveguides

Uncontrolled terms:All-optical switching - Highly integrated - Incident intensity - Kerr nonlinear medium - Metal insulator metals - Nanodisks - Nonlinear effect - Nonlinear structure - Plasmonic waveguides - Red shift  - Resonance wavelengths - Resonant fields

Classification code:531 Metallurgy and Metallography - 714 Electronic Components and Tubes - 741.1 Light/Optics - 741.1.1 Nonlinear Optics - 921 Mathematics - 961 Systems Science

DOI:10.1364/AO.50.005287

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 158>

 

Accession number:20123015278830

Title:Nonlinear characterization of silver nanocrystals incorporated tellurite glasses for fiber development

Authors:Zhou, Zhiguang (1); Tan, Wenjiang (2); Si, Jinhai (2); Zhan, Huan (1); He, Jianli (1); Lin, Aoxiang (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics (XIOPM), Chinese Academy of Sciences (CAS), Xi'an 710119, China; (2) Key Laboratory for Physical Electronics and Devices of the Ministry of Education, Shaanxi Key Lab of Information Photonic Technique, Xi'An Jiaotong University, Xi'an, 710049, China; (3) Graduate School of Chinese Academy of Sciences, Beijing 100049, China

Corresponding author:Zhou, Z.

Source title:2011 Asia Communications and Photonics Conference and Exhibition, ACP 2011

Abbreviated source title:Asia Commun. Photonics Conf. Exhib., ACP

Monograph title:2011 Asia Communications and Photonics Conference and Exhibition, ACP 2011

Issue date:2011

Publication year:2011

Article number:6210636

Language:English

ISBN-13:9780819489616

Document type:Conference article (CA)

Conference name:2011 Asia Communications and Photonics Conference and Exhibition, ACP 2011

Conference date:November 13, 2011 - November 16, 2011

Conference location:Shanghai, China

Conference code:91175

Sponsor:SPIE; IEEE Photonics Society; OSA; Chinese Optical Society; Chinese Institute of Communications

Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States

Abstract:To develop high nonlinear optical fibers for all-optical switching applications, 7.5 wt% AgNO<inf>3</inf> was incorporated into tellurite glasses with composition of 75TeO<inf>2</inf>-20ZnO-5Na<inf>2</inf>CO<inf>3</inf> (TZN75) under precisely-controlled experimental conditions to form 7.5Ag-TZN75 glass. Surface Plasmon resonance absorption peak of Ag nanocrystals embedded in 7.5Ag-TZN75 glass was found to center at 552 nm. By degenerated four-wave mixing method, the non-resonant nonlinear refractive index, n<inf>2</inf>, of 7.5Ag-TZN75 glass was measured to be 7.54&times;10¹⁹ m ²W¹ at 1500 nm, about 3 times of the reference TZN75 glass without any dopant and 27 times of the silicate glasses and fibers, and the response time is about 1 picosecond. &copy; 2011 SPIE-OSA-IEEE.

Number of references:14

Main heading:Silver

Controlled terms:Exhibitions - Glass - Nanocrystals - Nonlinear optics - Optical fibers - Photonics - Refractive index - Silicates - Sodium - Surface plasmon resonance  - Tellurium compounds - Zinc oxide

Uncontrolled terms:All-optical switching - Degenerated four-wave mixing - Experimental conditions - Fiber development - Nonlinear characterization - Nonlinear optical fiber - Nonlinear refractive index - Nonresonant - Optical nonlinearity - Picoseconds  - Silicate glass - Silver nanocrystals - Surface plasmon resonance absorption - Tellurite glass

Classification code:902.2 Codes and Standards - 812.3 Glass - 812 Ceramics, Refractories and Glass - 804.2 Inorganic Compounds - 761 Nanotechnology - 741 Light, Optics and Optical Devices - 549.1 Alkali Metals - 547.1 Precious Metals - 414 Masonry Materials

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 159>

 

Accession number:20113714325874

Title:Optical imaging based on compressive sensing

Authors:Li, Shen (1); Ma, Cai-Wen (1); Xia, Ai-Li (1)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics of CAS, Xi'an Shaanxi 710119, China

Corresponding author:Li, S.

Source title:Proceedings of SPIE - The International Society for Optical Engineering

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:8194

Monograph title:International Symposium on Photoelectronic Detection and Imaging 2011: Advances in Imaging Detectors and Applications

Issue date:2011

Publication year:2011

Article number:81942H

Language:English

ISSN:0277786X

CODEN:PSISDG

ISBN-13:9780819488350

Document type:Conference article (CA)

Conference name:International Symposium on Photoelectronic Detection and Imaging 2011: Advances in Imaging Detectors and Applications

Conference date:May 24, 2011 - May 26, 2011

Conference location:Beijing, China

Conference code:86450

Sponsor:Chinese Society of Astronautics

Publisher:SPIE, P.O. Box 10, Bellingham, WA 98227-0010, United States

Abstract:Compressive Sensing (CS) is a new sampling framework that provides an alternative to the well-known Shannon sampling theory. The basic idea of CS theory is that a signal or image, unknown but supposed to be sparse or compressible in some basis, can be subjected to fewer measurements than the nominal number of pixels, and yet be accurately reconstructed. By designing optical sensors to measure inner products between the scene and a set of test functions according to CS theory, we can use sophisticated computational methods to infer critical scene structure and content for significantly economizing the resources in data acquisition store and transmit. In this paper, we investigate how CS can provide new insights into optical imaging including optical devices. We first give a brief overview of the CS theory and reviews associated fast numerical reconstruction algorithms. Next, this paper explores the potential of several different physically realizable optical systems based on CS principles. In the end, we briefly discuss possible implication in the areas of data compression and optical imaging. &copy; 2011 SPIE.

Number of references:46

Main heading:Data compression

Controlled terms:Algorithms - Detectors - Image coding - Optical image storage - Pixels - Signal reconstruction

Uncontrolled terms:Compressive sensing - Inner product - Numerical reconstruction algorithms - Optical imaging - Reconstruction algorithms - Scene structure - Shannon sampling - Single-pixel camera - Sparsity - Test functions

Classification code:921 Mathematics - 914 Safety Engineering - 741.3 Optical Devices and Systems - 741 Light, Optics and Optical Devices - 723.5 Computer Applications - 723 Computer Software, Data Handling and Applications - 716.1 Information Theory and Signal Processing

DOI:10.1117/12.900691

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 160>

 

Accession number:20113214224365

Title:Study on the transmission characteristic of terahertz pulse through packing materials

Authors:Liu, Jia (1); Fan, Wenhui (1); Xue, Bing (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China

Corresponding author:Fan, W.(fanwh@opt.ac.cn)

Source title:Chinese Optics Letters

Abbreviated source title:Chin. Opt. Lett.

Volume:9

Issue:SUPPL. 1

Issue date:June 2011

Publication year:2011

Pages:S10202

Language:English

ISSN:16717694

Document type:Journal article (JA)

Publisher:Science Press, 18,Shuangqing Street,Haidian, Beijing, 100085, China

Abstract:Terrorism has become an international problem in recent years as evidenced by toxins mailed through the post, liquid explosives planted in airplanes, and so on. Clearly, the security screening of packing materials is highly required. We conduct nondestructive and contactless detection of some packing materials used in daily life by terahertz time-domain spectroscopy. The THz time-domain spectra of five typical kinds of packing materials are measured in the frequency range of 0.3-2.5 THz. THz absorption spectra and transmittance are also analyzed. &copy; 2011 Chinese Optics Letters.

Number of references:7

Main heading:Terahertz spectroscopy

Uncontrolled terms:Contactless detection - Daily lives - Frequency ranges - Non destructive - Packing materials - Security screening - Terahertz pulse - Terahertz time domain spectroscopy - THz absorption spectra - Time domain  - Transmission characteristics

Classification code:931.1 Mechanics

DOI:10.3788/COL201109.S10202

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 161>

 

Accession number:20113714325932

Title:A study on the buffeting aberrance regulation of TDICCD mapping camera

Authors:Bai, Zhe (1); Ma, Zhen (1); Zhang, Boheng (1)

Author affiliation:(1) CAS, Xi'an Institute of Optics and Precision Mechanics, Xi'an 710068, China; (2) Graduate Academy of China, Association of Science, Beijing 100039, China

Corresponding author:Bai, Z.

Source title:Proceedings of SPIE - The International Society for Optical Engineering

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:8194

Monograph title:International Symposium on Photoelectronic Detection and Imaging 2011: Advances in Imaging Detectors and Applications

Issue date:2011

Publication year:2011

Article number:819430

Language:English

ISSN:0277786X

CODEN:PSISDG

ISBN-13:9780819488350

Document type:Conference article (CA)

Conference name:International Symposium on Photoelectronic Detection and Imaging 2011: Advances in Imaging Detectors and Applications

Conference date:May 24, 2011 - May 26, 2011

Conference location:Beijing, China

Conference code:86450

Sponsor:Chinese Society of Astronautics

Publisher:SPIE, P.O. Box 10, Bellingham, WA 98227-0010, United States

Abstract:In this paper, the fundamental of the TDICCD mapping camera is introduced, and the influence of the satellite buffeting on the image quality of the TDICCD camera is analyzed. In order to reduce the influence, a regulated resolution is put forward. Compared with the traditional TDICCD mapping camera, a special TDICCD focal plane which several TDICCD devices splited joint end to end is designed. A great deal of information are captured through the focal plane, and a mathematical model is established to analyze the data information. Then the results are feed back to the satellite, and the attitude of the satellite is actively regulated in real time. Finally, make experiments and simulation to validate it. The experiment result indicate that the design is valid. &copy; 2011 SPIE.

Number of references:9

Main heading:Image quality

Controlled terms:Buffeting - Cameras - Detectors - Experiments - Focusing - Mapping - Mathematical models - Satellites

Uncontrolled terms:Data informations - End to end - Focal Plane - Mapping camera - Real time - Regulation - TDICCD - The buffeting aberrance

Classification code:921 Mathematics - 914 Safety Engineering - 902.1 Engineering Graphics - 901.3 Engineering Research - 742.2 Photographic Equipment - 741.1 Light/Optics - 741 Light, Optics and Optical Devices - 655.2 Satellites - 651.1 Aerodynamics, General

DOI:10.1117/12.900996

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 162>

 

Accession number:20120114664522

Title:A new model and improvement on test methods of the readout noise in the CCD camera

Authors:Yang, Zuoting (1); Ruan, Ping (1); Ge, Wei (1); Wang, Hong (1)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, 710119, China; (2) Graduate University, Chinese Academy of Sciences, Beijing, 100049, China

Corresponding author:Yang, Z.

Source title:Proceedings of SPIE - The International Society for Optical Engineering

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:8321

Monograph title:Seventh International Symposium on Precision Engineering Measurements and Instrumentation

Issue date:2011

Publication year:2011

Article number:83212O

Language:English

ISSN:0277786X

CODEN:PSISDG

ISBN-13:9780819479402

Document type:Conference article (CA)

Conference name:7th International Symposium on Precision Engineering Measurements and Instrumentation

Conference date:August 7, 2011 - August 11, 2011

Conference location:Lijiang, China

Conference code:87934

Sponsor:International Committee on Measurements and Instrumentation; National Natural Science Foundation of China

Publisher:SPIE, P.O. Box 10, Bellingham, WA 98227-0010, United States

Abstract:In this paper, a comprehensive model is developed for the scientific CCD camera readout noise. The readout noise can significantly reduce the ability of weak signal detection and ultimately affects the performance of an image processing approach to some extent. The different readout noise sources in scientific CCD camera are well documented, however, there has been little paper on the development of an all-sided readout noise model about the scientific CCD camera. Based on the proposed model, this paper presents a new test method that is present for choosing the standard section by defining criteria of optimality. The proposed method can get the more accurate readout noise than the test method used by experiment and analysis. Besides, the proposed method is fast and simple and therefore can be fitted in the analysis of data and post-image processing, which have very important application in analysis of the CCD camera other performance indicators. &copy; 2011 Copyright Society of Photo-Optical Instrumentation Engineers (SPIE).

Number of references:12

Main heading:CCD cameras

Controlled terms:Benchmarking - Charge coupled devices - Image processing - Measurements - Models - Precision engineering

Uncontrolled terms:Analysis of data - Camera readout - Comprehensive model - Experiment and analysis - New model - Optimality - Performance indicators - Post-image processing - Processing approach - Readout noise  - Test method - Weak signal detection

Classification code:944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments - 943 Mechanical and Miscellaneous Measuring Instruments - 942 Electric and Electronic Measuring Instruments - 941 Acoustical and Optical Measuring Instruments - 913 Production Planning and Control; Manufacturing - 912 Industrial Engineering and Management - 902.1 Engineering Graphics - 741 Light, Optics and Optical Devices - 714.2 Semiconductor Devices and Integrated Circuits

DOI:10.1117/12.905128

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 163>

 

Accession number:20114114409572

Title:Microplasma technology and its applications in analytical chemistry

Authors:Yuan, Xin (1); Tang, Jie (2); Duan, Yixiang (1)

Author affiliation:(1) College of Chemistry, Sichuan University, Chengdu, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics of CAS, Xi'an, China; (3) Research Center of Analytical Instrumentation, Sichuan University, 29 Wangjiang Road, Chengdu 610064, China

Corresponding author:Duan, Y.(yduan@scu.edu.cn)

Source title:Applied Spectroscopy Reviews

Abbreviated source title:Appl Spectrosc Rev

Volume:46

Issue:7

Issue date:October 2011

Publication year:2011

Pages:581-605

Language:English

ISSN:05704928

E-ISSN:1520569X

CODEN:APSRBB

Document type:Journal article (JA)

Publisher:Taylor and Francis Inc., 325 Chestnut St, Suite 800, Philadelphia, PA 19106, United States

Abstract:This review article describes some existing microplasma sources and their applications in analytical chemistry. These microplasmas mainly include direct current glow discharge (DC), microhollow-cathode discharge (MHCD) or microstructure electrode (MSE), dielectric barrier discharge (DBD), capacitively coupled microplasmas (CCPs), miniature inductively coupled plasmas (mICPs), and microwave-induced plasmas (MIPs). The historical development and recent advances in these microplasma techniques are presented. Fundamental properties of the microplasmas, the unique features of the reduced size and volume, as well as the advantageous device structures for chemical analysis are discussed in detail, with the emphasis toward detection of gaseous samples. The analytical figures of merit obtained using these microplasmas as molecular/elemental- selective detectors for emission spectrometry and as ionization sources for mass spectrometry are also given in this review article. Copyright &copy; Taylor &amp; Francis Group, LLC.

Number of references:117

Main heading:Metamaterials

Controlled terms:Chemical detection - Dielectric devices - Electromagnetic induction - Gas chromatography - Glow discharges - Inductively coupled plasma - Ionization of gases - Mass spectrometry - Plasma devices - Plasma waves

Uncontrolled terms:Capacitively coupled - Device structures - Dielectric barrier discharges - Direct current glow discharges - Emission spectrometry - Figures of merits - Fundamental properties - gas discharge - Gaseous samples - Historical development  - Ionization sources - Micro-plasmas - Microplasma source - Microstructure electrodes - Microwave-induced plasmas - Reduced size - Selective detectors - Unique features

Classification code:951 Materials Science - 932.3 Plasma Physics - 802.2 Chemical Reactions - 801 Chemistry - 714 Electronic Components and Tubes - 704 Electric Components and Equipment - 701.1 Electricity: Basic Concepts and Phenomena

DOI:10.1080/05704928.2011.604814

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 164>

 

Accession number:20125215834076

Title:High energy dual-wavelength mid-infrared extracavity KTA optical parametric oscillator

Authors:Liu, Hongjun (1); Sun, Qibing (1); Huang, Nan (1); Zhu, Shaolan (1); Zhao, Wei (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics Technology, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China

Corresponding author:Liu, H.(liuhongjun@opt.ac.cn)

Source title:World Academy of Science, Engineering and Technology

Abbreviated source title:World Acad. Sci. Eng. Technol.

Volume:53

Issue date:May 2011

Publication year:2011

Pages:422-425

Language:English

ISSN:2010376X

E-ISSN:20103778

Document type:Conference article (CA)

Publisher:WASET - World Academy of Science, Engineering and Technology, No: 235 Eski Edirne Asfalti, Istanbul, 34045, Turkey

Abstract:A high energy dual-wavelength extracavity KTA optical parametric oscillator (OPO) with excellent stability and beam quality, which is pumped by a Q-switched single-longitudinal-mode Nd:YAG laser, has been demonstrated based on a type II noncritical phase matching (NCPM) KTA crystal. The maximum pulse energy of 10.2 mJ with the output stability of better than 4.1% rms at 3.467 &mu;m is obtained at the repetition rate of 10 Hz and pulse width of 2 ns, and the 11.9 mJ of 1.535 &mu;m radiation is obtained simultaneously. This extracavity NCPM KTA OPO is very useful when high energy, high beam quality and smooth time domain are needed.

Number of references:10

Main heading:Optical parametric oscillators

Controlled terms:Lasers - Neodymium lasers

Uncontrolled terms:Dual wavelength laser - Dual-wavelength - High beam quality - High energy - Midinfrared - Midinfrared lasers - ND : YAG lasers - Noncritical phase matching - OPO - Output stability  - Pulse energies - Pulsewidths - Q-switched - Repetition rate - Single longitudinal mode - Time domain - Type II

Classification code:744 Lasers

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 165>

 

Accession number:20114614524938

Title:Real-time measurement of detonation transient temperature

Authors:Zheng, Jin-Kun (1); Bai, Yong-Lin (2); Wang, Bo (2); Liu, Bai-Yu (2); Yang, Wen-Zheng (2); Bai, Xiao-Hong (2); Qin, Jun-Jun (2); Zhao, Jun-Ping (1); Gou, Yong-Sheng (1); Liu, Hui (1)

Author affiliation:(1) Key Laboratory of Ultrafast Photoelectric Diagnostic Technology, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (3) Graduate University of Chinese Academy of Sciences, Beijing 100049, China

Corresponding author:Bai, Y.-L.(baiyonglin@opt.ac.cn)

Source title:Guang Pu Xue Yu Guang Pu Fen Xi/Spectroscopy and Spectral Analysis

Abbreviated source title:Guang Pu Xue Yu Guang Pu Fen Xi

Volume:31

Issue:11

Issue date:November 2011

Publication year:2011

Pages:3060-3063

Language:Chinese

ISSN:10000593

CODEN:GYGFED

Document type:Journal article (JA)

Publisher:Science Press, 18,Shuangqing Street,Haidian, Beijing, 100085, China

Abstract:Based on the spectral characteristic of the detonation temperature, the present paper presents a measurement system of transient multi-wavelength pyrometry with the theory of multi-wavelength thermometry. The FPGA was applied as the hardware developing platform and the high-speed linear CCD was utilized. Each module was controlled by FPGA to achieve the process of real-time data acquisition, storage and transmission. Using the multiple regression analysis method, the dynamic spectral waveforms were calculated. The two laser spectral lines, 630 and 532 nm, were used to calibrate the corresponding pixel sequence numbers and the No.175 and No.270 were confirmed. In this paper, the halide tungsten light was measured. The results show that the system can sample continuous spectrum signal at several different times; the CCD can stably work with 40 MHz clock and the frame scanning frequency can achieve 73 kHz.

Number of references:7

Main heading:Detonation

Controlled terms:Field programmable gate arrays (FPGA) - Regression analysis - Spectroscopy - Temperature measurement - Tungsten

Uncontrolled terms:Continuous spectrum - High-speed - Laser spectral lines - Linear CCD - Measurement system - Mechanics of explosion - Multi-wavelength pyrometry - Multiple regression analysis - Multiwavelength - Pixel sequences  - Real time measurements - Real-time data acquisition - Scanning frequency - Spectral characteristics - Transient temperature - Wave forms

Classification code:521 Fuel Combustion and Flame Research - 543.5 Tungsten and Alloys - 721.3 Computer Circuits - 801 Chemistry - 922.2 Mathematical Statistics - 944.6 Temperature Measurements

DOI:10.3964/j.issn.1000-0593 (2011) 11-3060-05

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 166>

 

Accession number:20114014386180

Title:Influences of sinusoidal component on typical phase masks used to realize wave-front coding technique

Authors:Zhao, Hui (1); Yi, Hongwei (1); Li, Yingcai (1)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Science, China

Corresponding author:Zhao, H.(zhaohui1981.zju@gmail.com)

Source title:ICEOE 2011 - 2011 International Conference on Electronics and Optoelectronics, Proceedings

Abbreviated source title:ICEOE - Int. Conf. Electron. Optoelectron., Proc.

Volume:1

Monograph title:ICEOE 2011 - 2011 International Conference on Electronics and Optoelectronics, Proceedings

Issue date:2011

Publication year:2011

Pages:V1111-V1114

Article number:6013059

Language:English

ISBN-13:9781612842738

Document type:Conference article (CA)

Conference name:2011 International Conference on Electronics and Optoelectronics, ICEOE 2011

Conference date:July 29, 2011 - July 31, 2011

Conference location:Dalian, China

Conference code:86661

Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States

Abstract:The key of wave-front coding lies in the design of suitable phase masks. In our recent research, by combining a sinusoidal component with the cubic phase mask, a new mask called cubic sinusoidal phase mask, abbreviated as CSPM is proposed and can enhance the DOF (depth of field) extension capability of cubic mask. However, that work needs further expansion. First, only the cubic phase mask is selected to demonstrate the effectiveness of sinusoidal component in improving the performance of wave-front coded imaging system, but this is not enough; second, several constraints, which are adopted to simplify the CSPM optimization, should be eliminated. In this paper, the researches have been expanded based on the two points mentioned above and the sinusoidal component is indeed useful for improving DOF extension capability of existing phase masks. &copy; 2011 IEEE.

Number of references:6

Main heading:Photoresists

Controlled terms:Optoelectronic devices - Wavefronts

Uncontrolled terms:Coding techniques - Cubic phase mask - Depth of field - Extension capabilities - Phase masks - Sinusoidal components - Two-point - wave-front coding

Classification code:711 Electromagnetic Waves - 717.2 Optical Communication Equipment - 741.1 Light/Optics

DOI:10.1109/ICEOE.2011.6013059

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 167>

 

Accession number:20113614310387

Title:Design of combined magnetic field system for magnetic-bottle time-of-flight spectrometer

Authors:Wang, Chao (1); Tian, Jinshou (1); Zhang, Meizhi (2); Kang, Yifan (3)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (2) School of Electronics Engineering, Xi'an University of Post and Telecommunication, Xi'an 710061, China; (3) School of Science, Air Force Engineering University, Xi'an 710051, China

Corresponding author:Wang, C.(igodwang@gmail.com)

Source title:Qiangjiguang Yu Lizishu/High Power Laser and Particle Beams

Abbreviated source title:Qiangjiguang Yu Lizishu

Volume:23

Issue:7

Issue date:July 2011

Publication year:2011

Pages:1810-1812

Language:Chinese

ISSN:10014322

CODEN:QYLIEL

Document type:Journal article (JA)

Publisher:Editorial Office of High Power Laser and Particle Beams, P.O. Box 919-805, Mianyang, 621900, China

Abstract:Based on the primary requirement for the magnetic field system in magnetic-bottle time-of-flight spectrometer, an appropriate combined inhomogeneous magnetic field system is designed. The inhomogeneous higher magnetic field part, with the highest field of 1.2 T, is produced by the combination of a permanent magnet and a pole piece with optimized shape. The magnet, known as NdFeB magnet, is one of rare earth permanent magnets in N52. The guiding uniform magnetic field of 1.0&times;10^-3 T is provided by solenoid, with length of 3 m and radius of 3 cm. The pitch between the pole piece and the near end of used solenoid is determined to be 5 cm, which can satisfy the actual engineering needs.

Number of references:8

Main heading:Magnetic fields

Controlled terms:Bottles - Magnetic devices - Neutron spectrometers - Permanent magnets - Solenoids - Spectrometers - Spectrometry

Uncontrolled terms:Adiabatic parameters - Parallelizations - Pole piece - Time of flight - Time-of-flight spectrometer

Classification code:932.1 High Energy Physics - 801 Chemistry - 714 Electronic Components and Tubes - 704.1 Electric Components - 704 Electric Components and Equipment - 701.2 Magnetism: Basic Concepts and Phenomena - 694.2 Packaging Materials

DOI:10.3788/HPLPB20112307.1810

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 168>

 

Accession number:20113714325919

Title:A practical method to extending dynamic range of CCD camera

Authors:Chen, Zhi (1); Qiu, Yuehong (1); Wen, Yan (1); Jiang, Baotan (1); Gao, Bo (1)

Author affiliation:(1) CAS, Xi'an Institute of Optics and Precision Mechanics, Xi'an, 710119, China; (2) Chinese Academy of Sciences, Graduate University, Beijing, 100039, China

Corresponding author:Chen, Z.

Source title:Proceedings of SPIE - The International Society for Optical Engineering

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:8194

Monograph title:International Symposium on Photoelectronic Detection and Imaging 2011: Advances in Imaging Detectors and Applications

Issue date:2011

Publication year:2011

Article number:819417

Language:English

ISSN:0277786X

CODEN:PSISDG

ISBN-13:9780819488350

Document type:Conference article (CA)

Conference name:International Symposium on Photoelectronic Detection and Imaging 2011: Advances in Imaging Detectors and Applications

Conference date:May 24, 2011 - May 26, 2011

Conference location:Beijing, China

Conference code:86450

Sponsor:Chinese Society of Astronautics

Publisher:SPIE, P.O. Box 10, Bellingham, WA 98227-0010, United States

Abstract:CCD (Charge Coupled Device) is the most popular detector for camera to detect low levels of light for wavelengths from 300nm to 1100nm. Contemporary CCD has read noise level equivalent to a few electrons, and Well capacity over 100,000 electrons. In order to take full advantage of these characteristics, it needs the dynamic of ADC must exceed the dynamic of the CCD. That is the number of bits provided by the ADC must exceed 16 bits. While the high reliability and inexpensive 16-20 bit A/D converter is few. In this paper, we firstly analyze CCD noise and then present the principle to extend the dynamic of the CCD in signal processing chain using two low resolution ADC with different sensitivity. At last we present a concrete example of improving the resolution of the ADC is by tow parallel low resolution ADCS with developing software to suitably process the converted analog-to-digital signal to achieve the same effect as a higher resolution ADC. &copy; 2011 SPIE.

Number of references:4

Main heading:CCD cameras

Controlled terms:Analog to digital conversion - Charge coupled devices - Detectors - Signal detection

Uncontrolled terms:A/D converter - Analog-to-digital - Dynamic range - High reliability - Higher resolution - Low level - Low resolution - Practical method - Read noise - Signal to noise  - Well capacity

Classification code:714.2 Semiconductor Devices and Integrated Circuits - 716.1 Information Theory and Signal Processing - 722.4 Digital Computers and Systems - 914 Safety Engineering

DOI:10.1117/12.900007

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 169>

 

Accession number:20114714546951

Title:Interaction and motion of solitons in passively-mode-locked fiber lasers

Authors:Liu, Xueming (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China

Corresponding author:Liu, X.(liuxueming72@yahoo.com)

Source title:Physical Review A - Atomic, Molecular, and Optical Physics

Abbreviated source title:Phys Rev A

Volume:84

Issue:5

Issue date:November 14, 2011

Publication year:2011

Article number:053828

Language:English

ISSN:10502947

E-ISSN:10941622

CODEN:PLRAAN

Document type:Journal article (JA)

Publisher:American Physical Society, One Physics Ellipse, College Park, MD 20740-3844, United States

Abstract:Interaction and motion of multiple solitons in passively-mode-locked (PML) fiber lasers are investigated numerically. Three types of relative motions of two solitons are found in PML fiber lasers. The numerical results show that the relative motion of solitons attributes to the phase shift, which corresponds to the instantaneous frequency at pulse peak to be nonzero. Different from the classical dynamics of billiard balls, the interaction of solitons is similar to the Feynman diagram which is a pictorial way to represent the interaction of particles. After solitons interact with one another, their shapes do not change, but their phases shift and relative motions change. The theoretical results demonstrate that the separation of neighboring solitons in the laser cavity is about several hundred picoseconds to several nanoseconds. The theoretical predictions are in good agreement with the experimental results. &copy; 2011 American Physical Society.

Number of references:24

Main heading:Mode-locked fiber lasers

Controlled terms:Fiber lasers - Quantum theory - Solitons

Uncontrolled terms:Billiard balls - Classical dynamics - Feynman diagrams - Instantaneous frequency - Laser cavity - Numerical results - Picoseconds - Relative motion - Shift-and - Theoretical prediction  - Theoretical result

Classification code:744.1 Lasers, General - 744.4 Solid State Lasers - 931.3 Atomic and Molecular Physics - 931.4 Quantum Theory; Quantum Mechanics

DOI:10.1103/PhysRevA.84.053828

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 170>

 

Accession number:20112013983311

Title:Study of non-classical light imaging technology

Authors:Chen, Ming-Rui (1); Bi, Si-Wen (1); Dou, Xi-Bo (1); Liu, Wang-Yun (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Chinese Academy of Sciences, Xi'an, 710119, China; (2) Graduate University of Chinese Academy of Sciences, Beijing 100049, China

Corresponding author:Chen, M.-R.(chenmr@opt.ac.cn)

Source title:Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

Abbreviated source title:Nucl Instrum Methods Phys Res Sect A

Volume:637

Issue:1 SUPPL.

Issue date:May 1, 2011

Publication year:2011

Pages:S130-S133

Language:English

ISSN:01689002

CODEN:NIMAER

Document type:Conference article (CA)

Publisher:Elsevier, P.O. Box 211, Amsterdam, 1000 AE, Netherlands

Abstract:Non-classical light that generates through the optical parametric down-conversion process by using an optical parametric oscillator is introduced, and the imaging system based on the light is built. The characteristics of the light and the spatial resolution of the image are studied. The light irradiates directly on the object plate, producing a mass of signal photons, then the signal photons are collected by the charge-coupled device. The output electrical signal is collected by a high-speed data collection card and processed with software. Finally, the object image is acquired, and its revised image is obtained by image processing. The results indicate that the resolution of the image based on the non-classical infrared light is 1.43 times that of infrared coherent light. The non-classical light can be widely used for high-resolution imaging, spectrum analysis, and micro-biological sample detection. &copy; 2010 Elsevier B.V. All rights reserved.

Number of references:14

Main heading:Light

Controlled terms:Digital image storage - Image processing - Imaging systems - Multiphoton processes - Optical data processing - Optical frequency conversion - Optical parametric oscillators - Photons - Spectrum analysis

Uncontrolled terms:Electrical signal - High resolution - High-resolution imaging - High-speed data - Image-based - Imaging technology - Infrared light - Non-classical lights - Parametric down-conversion - Parametric down-conversion process  - Spatial resolution

Classification code:944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments - 943 Mechanical and Miscellaneous Measuring Instruments - 942 Electric and Electronic Measuring Instruments - 941 Acoustical and Optical Measuring Instruments - 921 Mathematics - 746 Imaging Techniques - 741 Light, Optics and Optical Devices

DOI:10.1016/j.nima.2010.02.039

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 171>

 

Accession number:20111013731362

Title:Multi-channel plasmonic waveguide filters with disk-shaped nanocavities

Authors:Lu, Hua (1); Liu, Xueming (1); Gong, Yongkang (1); Wang, Leiran (1); Mao, Dong (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China

Corresponding author:Liu, X.(liuxueming72@yahoo.com)

Source title:Optics Communications

Abbreviated source title:Opt Commun

Volume:284

Issue:10-11

Issue date:May 15, 2011

Publication year:2011

Pages:2613-2616

Language:English

ISSN:00304018

CODEN:OPCOB8

Document type:Journal article (JA)

Publisher:Elsevier, P.O. Box 211, Amsterdam, 1000 AE, Netherlands

Abstract:A kind of multi-channel plasmonic filters based on metal-insulator-metal waveguides with disk-shaped nanocavities is proposed and numerically investigated. By calculating the resonant mode of disk-shaped nanocavity, it is found that the radius and refractive index of the nanocavity effectively control the resonance wavelength, which is consistent with the results obtained by finite-difference time-domain method. The characteristics of resonance spectra are influenced by the gap width between the cavity and waveguide, as can be exactly analyzed by temporal coupled mode theory. In addition, multi-channel plasmonic filters are achieved by increasing the number of nanocavity. &copy; 2011 Elsevier B.V. All rights reserved.

Number of references:30

Main heading:Plasmons

Controlled terms:Finite difference time domain method - Integrated optics - Metal insulator boundaries - Optical materials - Phonons - Photonics - Photons - Quantum theory - Refractive index - Resonance  - Solids - Waveguide components

Uncontrolled terms:Coupled mode theory - Gap widths - Integrated optics devices - Metal insulator metals - Multi-channel - Nano-cavities - Plasmonic - Plasmonic waveguides - Resonance spectrum - Resonance wavelengths  - Resonant mode - Surface plasmon polaritons - Wavelength filtering devices

Classification code:933 Solid State Physics - 931.4 Quantum Theory; Quantum Mechanics - 931.3 Atomic and Molecular Physics - 921 Mathematics - 741.3 Optical Devices and Systems - 741.1 Light/Optics - 714.3 Waveguides - 714.2 Semiconductor Devices and Integrated Circuits - 701 Electricity and Magnetism

DOI:10.1016/j.optcom.2011.01.046

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 172>

 

Accession number:20120714765570

Title:Design of hybrid refractive-diffractive star sensor optical system with small F-number

Authors:Yan, Peipei (1); Fan, Xuewu (1); He, Jianwei (1)

Author affiliation:(1) Space Optics Laboratory, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (2) Graduate University of the Chinese Academy of Sciences, Beijing 100049, China

Corresponding author:Yan, P.(yppoptics@163.com)

Source title:Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering

Abbreviated source title:Hongwai yu Jiguang Gongcheng Infrared Laser Eng.

Volume:40

Issue:12

Issue date:December 2011

Publication year:2011

Pages:2458-2464

Language:Chinese

ISSN:10072276

Document type:Journal article (JA)

Publisher:Chinese Society of Astronautics, P.O. Box 225-32, Tianjin, 300192, China

Abstract:Diffractive optical elements were used in optical system of star sensor, and a new kind of very high precision star sensor optical system with small F-number was designed. The system had an effective focal length of 90 mm, an F-Number of F/1.2, a field of view 2&omega; of 7&deg;, and a working wavelength range of 0.45-0.85 &mu;m. The system structure was simple. And the especial requirements of star sensor system about the dispersion spot diameter, energy concentration, distortion, lateral color etc. were all satisfied. Moreover, the environmental temperature analysis about this system was carried through. The analysis result indicated that the athermal and anti-defocus performances of the optical system of star sensor were enhanced while miniaturization and lightweight design was realized by using diffractive optical elements. This method puts forward new ideas for star sensor optical system design and has important reference significance and application value.

Number of references:13

Main heading:Optical systems

Controlled terms:Density (optical) - Diffractive optical elements - Optical design - Sensors - Stars - Systems analysis

Uncontrolled terms:Analysis results - Anti-defocus - Athermal - Effective focal lengths - Energy concentration - Environmental temperature - Field of views - High precision - Hybrid refractive-diffractive - Lightweight design  - Spot diameter - Star sensor - Star sensors - System structures - Wavelength ranges

Classification code:657.2 Extraterrestrial Physics and Stellar Phenomena - 741.1 Light/Optics - 741.3 Optical Devices and Systems - 801 Chemistry - 961 Systems Science

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 173>

 

Accession number:20114714538346

Title:Ultrawide tunable femtosecond optical parametric oscillator around 1.5 &mu;m based on high nonlinear photonic crystal fiber

Authors:Wen, Jin (1); Liu, Hongjun (1); Huang, Nan (1); Sun, Qibing (1); Long, Hanbo (1)

Author affiliation:(1) Xi'An Institute of Optics and Precision Mechanics, State Key Laboratory of Transient Optics and Photonics, Chinese Academy of Science, Xi'an, 710119, China

Corresponding author:Wen, J.

Source title:Optical Engineering

Abbreviated source title:Opt Eng

Volume:50

Issue:8

Issue date:August 2011

Publication year:2011

Article number:085001

Language:English

ISSN:00913286

E-ISSN:15602303

CODEN:OPEGAR

Document type:Journal article (JA)

Publisher:SPIE, P.O. Box 10, Bellingham, WA 98227-0010, United States

Abstract:The modulation instability and the phase-matching condition around the zero dispersion wavelength of the high nonlinear photonic crystal fiber (PCF) is numerically analyzed and simulated. The ultrawide tunable range can be obtained from the fiber optical parametric oscillator and the ultrashort pulse can be generated through choosing the parameters of dispersion coefficient, nonlinear coefficient, and pump power appropriately. The numerical simulation results show that a tunable range as wide as 318 nm has been obtained from the femtosecond PCF optical parametric oscillator, around 1.5 &mu;m. &copy; 2011 Society of Photo-Optical Instrumentation Engineers (SPIE).

Number of references:26

Main heading:Photonic crystal fibers

Controlled terms:Computer simulation - Crystal whiskers - Dispersion (waves) - Nonlinear optics - Optical parametric oscillators - Optical pumping - Photonic crystals - Ultrashort pulses

Uncontrolled terms:Dispersion coefficient - Femtosecond optical parametric oscillators - Femtoseconds - Fiber-optical parametric oscillators - Modulation instabilities - Nonlinear coefficient - Nonlinear photonic crystal fiber - Phase-matching condition - Pump power - Ultra-wide  - Zero-dispersion wavelength

Classification code:951 Materials Science - 801.4 Physical Chemistry - 744.9 Laser Applications - 744.1 Lasers, General - 741 Light, Optics and Optical Devices - 723.5 Computer Applications - 711.1 Electromagnetic Waves in Different Media

DOI:10.1117/1.3606497

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 174>

 

Accession number:20112514071850

Title:Segmentation of retinal blood vessels using the radial projection and semi-supervised approach

Authors:You, Xinge (1); Peng, Qinmu (1); Yuan, Yuan (2); Cheung, Yiu-Ming (3); Lei, Jiajia (1)

Author affiliation:(1) Department of Electronics and Information Engineering, Huazhong University of Science and Technology, Wuhan, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, Shaanxi, China; (3) Department of Computer Science, Hong Kong Baptist University, Hong Kong, Hong Kong

Corresponding author:Yuan, Y.(yuany@opt.ac.cn)

Source title:Pattern Recognition

Abbreviated source title:Pattern Recogn.

Volume:44

Issue:10-11

Issue date:October-November 2011

Publication year:2011

Pages:2314-2324

Language:English

ISSN:00313203

CODEN:PTNRA8

Document type:Journal article (JA)

Publisher:Elsevier Ltd, Langford Lane, Kidlington, Oxford, OX5 1GB, United Kingdom

Abstract:Automatic segmentation of retinal blood vessels has become a necessary diagnostic procedure in ophthalmology. The blood vessels consist of two types of vessels, i.e., thin vessels and wide vessels. Therefore, a segmentation method may require two different processes to treat different vessels. However, traditional segmentation algorithms hardly draw a distinction between thin and wide vessels, but deal with them together. The major problems of these methods are as follows: (1) If more emphasis is placed on the extraction of thin vessels, the wide vessels tend to be over detected; and more artificial vessels are generated, too. (2) If more attention is paid on the wide vessels, the thin and low contrast vessels are likely to be missing. To overcome these problems, a novel scheme of extracting the retinal vessels based on the radial projection and semi-supervised method is presented in this paper. The radial projection method is used to locate the vessel centerlines which include the low-contrast and narrow vessels. Further, we modify the steerable complex wavelet to provide better capability of enhancing vessels under different scales, and construct the vector feature to represent the vessel pixel by line strength. Then, semi-supervised self-training is used for extraction of the major structures of vessels. The final segmentation is obtained by the union of the two types of vessels. Our approach is tested on two publicly available databases. Experiment results show that the method can achieve improved detection of thin vessels and decrease false detection of vessels in pathological regions compared to rival solutions. &copy; 2011 Published by Elsevier Ltd.

Number of references:36

Main heading:Blood vessels

Controlled terms:Blood - Ophthalmology - Partial discharges

Uncontrolled terms:Automatic segmentations - Centerlines - Complex wavelets - Diagnostic procedure - Different process - Different scale - False detections - Line strength - Low contrast - Projection method  - Radial projection - Retinal blood vessels - Retinal image - Retinal vessels - Segmentation algorithms - Segmentation methods - Self-training - Semi-supervised - Semi-supervised method - Thin vessels

Classification code:461.2 Biological Materials and Tissue Engineering - 461.6 Medicine and Pharmacology - 701.1 Electricity: Basic Concepts and Phenomena

DOI:10.1016/j.patcog.2011.01.007

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 175>

 

Accession number:20113814348167

Title:Intrinsic images using optimization

Authors:Shen, Jianbing (1); Yang, Xiaoshan (1); Jia, Yunde (1); Li, Xuelong (2)

Author affiliation:(1) Beijing Laboratory of Intelligent Information Technology, School of Computer Science, Beijing Institute of Technology, Beijing 100081, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, Shaanxi, China

Corresponding author:Shen, J.(shenjianbing@bit.edu.cn)

Source title:Proceedings of the IEEE Computer Society Conference on Computer  Vision and Pattern Recognition

Abbreviated source title:Proc IEEE Comput Soc Conf Comput Vision Pattern Recognit

Monograph title:2011 IEEE Conference on Computer Vision and Pattern Recognition, CVPR 2011

Issue date:2011

Publication year:2011

Pages:3481-3487

Article number:5995507

Language:English

ISSN:10636919

CODEN:PIVRE9

ISBN-13:9781457703942

Document type:Conference article (CA)

Conference name:2011 IEEE Conference on Computer Vision and Pattern Recognition, CVPR 2011

Conference date:June 20, 2011 - June 25, 2011

Conference location:Colorado Springs, CO, United states

Conference code:86511

Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States

Abstract:In this paper, we present a novel intrinsic image recovery approach using optimization. Our approach is based on the assumption of color characteristics in a local window in natural images. Our method adopts a premise that neighboring pixels in a local window of a single image having similar intensity values should have similar reflectance values. Thus the intrinsic image decomposition is formulated by optimizing an energy function with adding a weighting constraint to the local image properties. In order to improve the intrinsic image extraction results, we specify local constrain cues by integrating the user strokes in our energy formulation, including constant-reflectance, constant-illumination and fixed-illumination brushes. Our experimental results demonstrate that our approach achieves a better recovery of intrinsic reflectance and illumination components than by previous approaches. &copy; 2011 IEEE.

Number of references:18

Main heading:Optimization

Controlled terms:Computer vision - Reflection

Uncontrolled terms:Color characteristics - Energy formulations - Energy functions - Illumination components - Image decomposition - Image extraction - Image properties - Image recovery - Intensity values - Natural images  - Reflectance values - Single images

Classification code:711 Electromagnetic Waves - 723.5 Computer Applications - 921.5 Optimization Techniques

DOI:10.1109/CVPR.2011.5995507

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 176>

 

Accession number:20113814337662

Title:Perfect absorber supported by optical Tamm states in plasmonic waveguide

Authors:Gong, Yongkang (1); Liu, Xueming (1); Lu, Hua (1); Wang, Leiran (1); Wang, Guoxi (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China

Corresponding author:Gong, Y.

Source title:Optics Express

Abbreviated source title:Opt. Express

Volume:19

Issue:19

Issue date:September 12, 2011

Publication year:2011

Pages:18393-18398

Language:English

E-ISSN:10944087

Document type:Journal article (JA)

Publisher:Optical Society of America, 2010 Massachusetts Ave, NW, Washington, DC, DC 20036-1023, United States

Abstract:Based on a two-dimensional plasmonic metal-dielectric-metal (MDM) waveguide with a thin metallic layer and a dielectric photonic crystal in the core, a novel absorber at visual and near-infrared frequencies is presented. The absorber spectra and filed distributions are investigated by the transfer-matrix-method and the finite-difference time-domain method. Numerical results show that attributing to excitation of the optical Tamm states in the MDM waveguide core, the optical wave is trapped in the proposed structure without reflection and transmission, leading to perfect absorption as high as 0.991. The proposed absorber can find useful application in all-optical integrated photonic circuits. &copy; 2011 Optical Society of America.

Number of references:26

Main heading:Multiplexing

Controlled terms:Finite difference time domain method - Optical waveguides - Photonic crystals - Plasmons - Time domain analysis - Transfer matrix method - Two dimensional - Waveguides

Uncontrolled terms:All-optical - Dielectric photonic crystals - Integrated photonic circuit - Near Infrared - Numerical results - Optical waves - Perfect absorber - Plasmonic - Plasmonic waveguides - Reflection and transmission  - Thin metallic layer - Waveguide core

Classification code:921 Mathematics - 902.1 Engineering Graphics - 718 Telephone Systems and Related Technologies; Line Communications - 933.1 Crystalline Solids - 717 Optical Communication - 714.3 Waveguides - 712.1 Semiconducting Materials - 716 Telecommunication; Radar, Radio and Television

DOI:10.1364/OE.19.018393

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 177>

 

Accession number:20140917402209

Title:Enhanced low-index field confinement by radially stratified micro optical fibers

Authors:Zhang, Wenfu (1); Mu, Jian-Wei (3); Huang, Wei-Ping (3); Zhao, Wei (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (2) Graduate School of the Chinese Academy of Sciences, Beijing 100049, China; (3) Department of Electrical and Computer Engineering, McMaster University, Hamilton, ON L8S 4K1, Canada

Corresponding author:Zhang, W.(wfu.zhang@gmail.com)

Source title:Optics InfoBase Conference Papers

Abbreviated source title:Opt.InfoBase Conf. Papers

Monograph title:Signal Processing in Photonic Communications, SPPCom 2011

Issue date:2011

Publication year:2011

Language:English

E-ISSN:21622701

ISBN-13:9781557529138

Document type:Conference article (CA)

Conference name:Signal Processing in Photonic Communications, SPPCom 2011

Conference date:June 12, 2011  -  June 15, 2011

Conference location:Toronto, Canada

Conference code:104081

Publisher:Optical Society of America, 2010 Massachusetts Ave, NW, Washington, DC, DC 20036-1023, United States

Abstract:The ring micro-fiber is studied. The calculating results show that light can be concentrated in nanometer-thin low-index ring regions with very high confinement efficiency. &copy; OSA/ANIC/IPR/Sensors/SL/SOF/SPPCom/2011.

Number of references:4

Main heading:Optical fibers

Controlled terms:Signal processing

Uncontrolled terms:High confinement - Micro-fiber

Classification code:716.1 Information Theory and Signal Processing - 741.1.2 Fiber Optics

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 178>

 

Accession number:20140817361643

Title:Enhanced low-index field confinement by radially stratified micro optical fibers

Authors:Zhang, Wenfu (1); Mu, Jian-Wei (3); Huang, Wei-Ping (3); Zhao, Wei (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (2) Graduate School of the Chinese Academy of Sciences, Beijing 100049, China; (3) Department of Electrical and Computer Engineering, McMaster University, Hamilton, ON L8S 4K1, Canada

Corresponding author:Zhang, W.(wfu.zhang@gmail.com)

Source title:Optics InfoBase Conference Papers

Abbreviated source title:Opt.InfoBase Conf. Papers

Monograph title:Optical Sensors, Sensors 2011

Issue date:2011

Publication year:2011

Language:English

E-ISSN:21622701

ISBN-13:9781557529138

Document type:Conference article (CA)

Conference name:Optical Sensors, Sensors 2011

Conference date:June 12, 2011  -  June 15, 2011

Conference location:Toronto, Canada

Conference code:104078

Publisher:Optical Society of America, 2010 Massachusetts Ave, NW, Washington, DC, DC 20036-1023, United States

Abstract:The ring micro-fiber is studied. The calculating results show that light can be concentrated in nanometer-thin low-index ring regions with very high confinement efficiency. &copy; OSA/ANIC/IPR/Sensors/SL/SOF/SPPCom/2011.

Number of references:4

Main heading:Optical fibers

Controlled terms:Optical sensors

Uncontrolled terms:High confinement - Micro-fiber

Classification code:741.1.2 Fiber Optics - 801 Chemistry

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 179>

 

Accession number:20114114420320

Title:Analysis to stray radiation of infrared detecting system

Authors:Niu, Jin-Xing (1); Shi, Shuheng (1); Zhou, Ren-Kui (2)

Author affiliation:(1) North China University of Water Resources and Electric Power, Zhengzhou 450011, China; (2) Xi'an Institute of Optics and Precision Mechanics, CAS, Xi'an 710119, China

Corresponding author:Niu, J.-X.

Source title:Proceedings of SPIE - The International Society for Optical Engineering

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:8193

Monograph title:International Symposium on Photoelectronic Detection and Imaging 2011: Advances in Infrared Imaging and Applications

Issue date:2011

Publication year:2011

Article number:81931H

Language:English

ISSN:0277786X

CODEN:PSISDG

ISBN-13:9780819488343

Document type:Conference article (CA)

Conference name:International Symposium on Photoelectronic Detection and Imaging 2011: Advances in Infrared Imaging and Applications

Conference date:May 24, 2011 - May 24, 2011

Conference location:Beijing, China

Conference code:86819

Sponsor:Chinese Society of Astronautics

Publisher:SPIE, P.O. Box 10, Bellingham, WA 98227-0010, United States

Abstract:In order to improve the detecting ability of dark target by infrared detecting system, stray radiation of the system should be studied before and suppression methods should be adopted. In the infrared detecting system, thermal emission of a room-temperature instrument may be several orders of magnitude larger than the flux of sources of target to be observed. When baffles and vanes are designed to suppress the stray radiation coming from sources outside of the field of view of the detecting system, their thermal radiation should be discussed together. In this article, the stray radiation of thermal emission of infrared detecting system is studied. How to design baffles, vanes and stops is introduced. Their structure models are established in TracePro. Their thermal emissions are simulated and analyzed by ray tracing program. The number of photons on a pixel which emitted from suppression structure which varies from 260K to 310K is given by simulation. From the simulation result, we can find that the stray radiation of thermal emission from inner baffle of primary mirror is the predominant source; The stray radiation of thermal emission of system with vanes on main tube is slightly bigger than that of the system with no vanes; the field stop placed at the first image plane can effectively decrease the number of photons of stray radiation. &copy; 2011 Copyright Society of Photo-Optical Instrumentation Engineers (SPIE).

Number of references:5

Main heading:Radiation

Controlled terms:Headlights - Photons - Stray light - Thermography (imaging)

Uncontrolled terms:Detecting ability - Detecting systems - Field of views - Image plane - Infrared detecting - Orders of magnitude - Primary mirrors - Room temperature - stray radiation - Structure models  - Suppression method - Thermal emissions - TracePro

Classification code:707.2 Electric Lamps - 711 Electromagnetic Waves - 741.1 Light/Optics - 742.1 Photography

DOI:10.1117/12.900014

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 180>

 

Accession number:20114414477638

Title:Estimating patient-specific shape prior for medical image segmentation

Authors:Zhang, Wuxia (1); Yan, Pingkun (1); Li, Xuelong (1)

Author affiliation:(1) State Key Laboratory of Transient, Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, 710119 Shaanxi, China

Corresponding author:Zhang, W.

Source title:Proceedings - International Symposium on Biomedical Imaging

Abbreviated source title:IEEE Comput. Soc. Conf. Comput. Vis. Pattern Recogn.

Monograph title:2011 8th IEEE International Symposium on Biomedical Imaging: From Nano to Macro, ISBI'11

Issue date:2011

Publication year:2011

Pages:1451-1454

Article number:5872673

Language:English

ISSN:19457928

E-ISSN:19458452

ISBN-13:9781424441280

Document type:Conference article (CA)

Conference name:2011 8th IEEE International Symposium on Biomedical Imaging: From Nano to Macro, ISBI'11

Conference date:March 30, 2011 - April 2, 2011

Conference location:Chicago, IL, United states

Conference code:87101

Sponsor:Inst. Electr. Electron. Eng., Eng. Med. Biol. Soc. (IEEE EMBS); Inst. Electr. Electron. Eng., Signal Process. Soc. (IEEE SPS)

Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States

Abstract:Image segmentation is one of the key problems in medical image analysis. This paper presents a new statistical shape model for automatic image segmentation. In contrast to the previous model based segmentation methods, where shape priors are estimated from a general population-based shape model, our proposed method aims to estimate patient-specific shape priors to achieve more accurate segmentation by using manifold learning techniques. The proposed shape prior estimation method is incorporated into a deformable model based framework for image segmentation. The effectiveness of the proposed method has been demonstrated by the experiments on segmenting the prostate from MR images. &copy; 2011 IEEE.

Number of references:8

Main heading:Image segmentation

Controlled terms:Estimation - Medical imaging - Medical problems

Uncontrolled terms:Automatic image segmentation - Deformable models - Estimation methods - Manifold learning - Medical image analysis - Medical image segmentation - Model-based segmentation - MR images - Shape model - Shape modeling  - Shape priors - Statistical shape model

Classification code:461.7 Health Care - 741 Light, Optics and Optical Devices - 741.1 Light/Optics - 746 Imaging Techniques - 921 Mathematics

DOI:10.1109/ISBI.2011.5872673

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 181>

 

Accession number:20113314245072

Title:Overall scheme and on-orbit images of Chang'E-2 lunar satellite CCD stereo camera

Authors:Zhao, Baochang (1); Yang, Jianfeng (1); Wen, Desheng (1); Gao, Wei (1); Chang, Lingying (1); Song, Zongxi (1); Xue, Bin (1); Zhao, Wei (1)

Author affiliation:(1) Xi'An Institute Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (2) Key Laboratory of Spectral Imaging Technology, Chinese Academy of Sciences, Xi'an 710119, China; (3) Graduate University of Chinese Academy of Science, Beijing 100049, China; (4) State Key Laboratory of Transient Optics and Photonics, Chinese Academy of Sciences, Xi'an 710119, China

Corresponding author:Zhao, B.(bczhao@opt.ac.cn)

Source title:Science China Technological Sciences

Abbreviated source title:Sci. China Technol. Sci.

Volume:54

Issue:9

Monograph title:Special Topic on Satellite Science (2237-2275)

Issue date:September 2011

Publication year:2011

Pages:2237-2242

Language:English

ISSN:16747321

E-ISSN:1862281X

Document type:Journal article (JA)

Publisher:Springer Verlag, Tiergartenstrasse 17, Heidelberg, D-69121, Germany

Abstract:The goals of engineering and scientific missions for Chang'E-2 lunar satellite require high detection sensitivity and large imaging dynamic range for the onboard CCD cameras. The TDI CCD image sensor was adopted for the two linear CCD stereo cameras for the first time in the lunar reconnaissance of the world. The design argumentation is described in this paper. The analysis shows that the imagers meet the mission requirements. The satellite was launched on 1 October 2010 at zero window. The cameras obtained images of 7 m resolution on the 100 km orbit for the first time on 24 October 2010, and operated once again on 27 October 2010 to take stereo images of the Sinus Iridum with the resolution better than 1.5 m. On the near-moon-arc of 15 km&times;100 km elliptical orbit, the images are very clear and rich of grey scales, indicating successful completion of the Chang'E-2 engineering mission. At the present the cameras are acquiring the full lunar surface stereo images with 7 m resolution on the 100 km circular orbit to complete their scientific mission. &copy; 2011 Science China Press and Springer-Verlag Berlin Heidelberg.

Number of references:12

Main heading:CCD cameras

Controlled terms:Lunar missions - Orbits - Satellites

Uncontrolled terms:Chang'E -2 - Circular orbit - Detection sensitivity - Dynamic range - Elliptical orbits - Grey scale - Linear CCD - lunar satellite - Lunar surface - Mission requirements  - On-orbit - Scientific mission - Sinus Iridum image - Stereo cameras - Stereo-image - TDI-CCD

Classification code:655.1 Spacecraft, General - 655.2 Satellites - 714.2 Semiconductor Devices and Integrated Circuits

DOI:10.1007/s11431-011-4519-5

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 182>

 

Accession number:20110813678738

Title:Aurora image segmentation by combining patch and texture thresholding

Authors:Gao, Xinbo (1); Fu, Rong (1); Li, Xuelong (2); Tao, Dacheng (3); Zhang, Beichen (4); Yang, Huigen (4)

Author affiliation:(1) School of Electronic Engineering, Xidian University, Xian 710071, Shaanxi, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xian 710119, Shaanxi, China; (3) School of Computer Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798 Singapore, Singapore; (4) SOA Key Laboratory for Polar Science, Polar Research Institute of China, Shanghai 200136, China

Corresponding author:Li, X.(xuelong_li@opt.ac.cn)

Source title:Computer Vision and Image Understanding

Abbreviated source title:Comput Vision Image Understanding

Volume:115

Issue:3

Issue date:March 2011

Publication year:2011

Pages:390-402

Language:English

ISSN:10773142

E-ISSN:1090235X

CODEN:CVIUF4

Document type:Journal article (JA)

Publisher:Academic Press Inc., 6277 Sea Harbor Drive, Orlando, FL 32887-4900, United States

Abstract:The proportion of aurora to the field-of-view in temporal series of all-sky images is an important index to investigate the evolvement of aurora. To obtain such an index, a crucial phase is to segment the aurora from the background of sky. A new aurora segmentation approach, including a feature extraction method and the segmentation algorithm, is presented in this paper. The proposed feature extraction method, called adaptive local binary patterns (ALBP), selects the frequently occurred patterns to construct the main pattern set, which avoids using the same pattern set to describe different texture structures in traditional local binary patterns. According to the different morphologies and different semantics of aurora, the segmentation algorithm is designed into two parts, texture part segmentation based on ALBP features and patch part segmentation based on modified Otsu method. As it is simple and efficient, our implementation is suitable for large-scale datasets. The experiments exhibited the segmentation effect of the proposed method is satisfactory from human visual aspect and segmentation accuracy. &copy; 2010 Elsevier Inc. All rights reserved.

Number of references:29

Main heading:Image segmentation

Controlled terms:Algorithms - Feature extraction - Semantics - Textures

Uncontrolled terms:Aurora - LBP - Otsu - Patch segmentation - Texture segmentation

Classification code:716 Telecommunication; Radar, Radio and Television - 723 Computer Software, Data Handling and Applications - 723.2 Data Processing and Image Processing - 903.2 Information Dissemination - 921 Mathematics - 933 Solid State Physics

DOI:10.1016/j.cviu.2010.11.011

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 183>

 

Accession number:20111213768089

Title:Properties of photon counting imaging detector with Au photocathode

Authors:Liu, Yongan (1); Zhao, Feifei (1); Hu, Huijun (1); Sheng, Lizhi (1); Yan, Qiurong (1); Zhao, Baosheng (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, Shaanxi 710119, China; (2) Graduate University of Chinese Academy of Sciences, Beijing 100049, China

Corresponding author:Liu, Y.(liuan86@126.com)

Source title:Guangxue Xuebao/Acta Optica Sinica

Abbreviated source title:Guangxue Xuebao

Volume:31

Issue:1

Issue date:January 2011

Publication year:2011

Article number:0123002

Language:Chinese

ISSN:02532239

CODEN:GUXUDC

Document type:Journal article (JA)

Publisher:Chinese Optical Society, P.O. Box 80, Xi'an, 710068, China

Abstract:Au photocathode is used in photon counting imaging system with induction readout. A 15 nm gold film is deposited on the resolution test board and it is used for transmission photocathode. The gain performance of micro-channel plates (MCP), resolution and counting rate of the detector with Au photocathode are tested. The results show that the system with Au cathode has a quasi-Gaussian pulse height distribution (PHD) curves. The peak of the PHD curves moved to the high-gain zone and the full width at half maximum (FWHM) gradually widened as the voltage increased. After the adoption of Au cathode, the detection efficiency and the signal-to-noise ratio of photon counting imaging detector effectively improved. The resolution test results show that the spatial resolution of the detector is better than 75 &mu;m, and the counting rate can reach 13.5 kHz when the system's resolution is better than 150 &mu;m.

Number of references:17

Main heading:Image storage tubes

Controlled terms:Detectors - Gold coatings - Optical devices - Optical instruments - Photocathodes - Photoelectricity - Photons - Signal to noise ratio

Uncontrolled terms:Au cathode - Charge induction - Counting rates - Detection efficiency - Gain performance - Gaussian pulse - Gold film - High-gain - Imaging detector - Micro channel plate  - Micro-channel plate (MCP) - Photon counting - Photon counting imaging - Resolution tests - Signal to noise - Spatial resolution

Classification code:714.1 Electron Tubes - 716.1 Information Theory and Signal Processing - 741.1 Light/Optics - 741.3 Optical Devices and Systems - 813.2 Coating Materials - 914 Safety Engineering

DOI:10.3788/AOS20113101.0123002

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 184>

 

Accession number:20113614296292

Title:Using an acousto-optic tunable filters for hyper spectro-polarimetric imaging

Authors:Chang, Ling-Ying (1); Zhao, Bao-Chang (1); Wen, De-Sheng (1); Chen, Rong-Li (1); Qiu, Yue-Hong (1)

Author affiliation:(1) Xi'an Institute Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (2) Graduate School, Chinese Academy of Sciences, Bejing 100049, China

Corresponding author:Chang, L.-Y.

Source title:Proceedings of SPIE - The International Society for Optical Engineering

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:8196

Monograph title:International Symposium on Photoelectronic Detection and Imaging 2011: Space Exploration Technologies and Applications

Issue date:2011

Publication year:2011

Article number:81961S

Language:English

ISSN:0277786X

CODEN:PSISDG

ISBN-13:9780819488374

Document type:Conference article (CA)

Conference name:International Symposium on Photoelectronic Detection and Imaging 2011: Space Exploration Technologies and Applications

Conference date:May 24, 2011 - May 26, 2011

Conference location:Beijing, China

Conference code:86296

Sponsor:Chinese Society of Astronautics (CAS)

Publisher:SPIE, P.O. Box 10, Bellingham, WA 98227-0010, United States

Abstract:Of all the hyperspectral imaging system using the optical filtering elements available,. AOTF(Acousto-optic tunable filters) is best to choose a filtering optical element that has high-speed spectral selectivity with high resolution, it can greatly reduces the amount of data collection and processing. In this paper , First, the work principle of AOTF was introduced, then described the AOTF imaging system, it covers the spectral band from 400nm to 900nm with a spectral resolution of near 2nm at 400nm and 10nm at 900nm. The device can provide about 2.2&deg; view field angle and 10mm aperture, which included TeO<inf>2</inf> crystal, image optical system, a charged coupled device(CCD)camera, rf electronics and control and processing software. Finally the paper presented the results of laboratory image testing. &copy; 2011 SPIE.

Number of references:8

Main heading:Acoustooptical effects

Controlled terms:Data handling - Imaging systems - Optical systems - Space research

Uncontrolled terms:Acousto-optic tunable filters - AOTF - Charged coupled - Data collection - High resolution - High-speed - Hperspectral imaging - Hyperspectral imaging systems - Imaging spectrometer - Optical filtering  - Processing software - RF electronics - Spectral band - Spectral selectivity - View field - Work principle

Classification code:656.2 Space Research - 723.2 Data Processing and Image Processing - 741.1 Light/Optics - 741.3 Optical Devices and Systems

DOI:10.1117/12.901014

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 185>

 

Accession number:20140717332448

Title:Nonlinear characterization of silver nanocrystals incorporated tellurite glasses for fiber development

Authors:Zhou, Zhiguang (1); Tan, Wenjiang (2); Si, Jinhai (2); Zhan, Huan (1); He, Jianli (1); Lin, Aoxiang (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics (XIOPM), Chinese Academy of Sciences (CAS), Xi'an 710119, China; (2) Key Laboratory for Physical Electronics, Devices of the Ministry of Education, Shaanxi Key Lab of Information Photonic Technique, Xi'an, 710049, China; (3) School of Electronics and information Engineering, Xi'an Jiaotong University, Xi'an, 710049, China; (4) Graduate School of Chinese Academy of Sciences, Beijing 100049, China

Corresponding author:Zhou, Z.

Source title:Optics InfoBase Conference Papers

Abbreviated source title:Opt.InfoBase Conf. Papers

Monograph title:Asia Communications and Photonics Conference and Exhibition, ACP 2011

Issue date:2011

Publication year:2011

Language:English

E-ISSN:21622701

ISBN-13:9780819489555

Document type:Conference article (CA)

Conference name:Asia Communications and Photonics Conference and Exhibition, ACP 2011

Conference date:November 13, 2011  -  November 16, 2011

Conference location:Shanghai, China

Conference code:102596

Publisher:Optical Society of America, 2010 Massachusetts Ave, NW, Washington, DC, DC 20036-1023, United States

Abstract:To develop high nonlinear optical fibers for all-optical switching applications, 7.5 wt% AgNO3 was incorporated into tellurite glasses with composition of 75TeO<inf>2</inf>-20ZnO-5Na<inf>2</inf>CO<inf>3</inf> (TZN75) under precisely-controlled experimental conditions to form 7.5Ag-TZN75 glass. Surface Plasmon resonance absorption peak of Ag nanocrystals embedded in 7.5Ag-TZN75 glass was found to center at 552 nm. By degenerated four-wave mixing method, the non-resonant nonlinear refractive index, n2, of 7.5Ag-TZN75 glass was measured to be 7.54&times;10<inf>-19</inf> m<inf>2</inf>.W<inf>-1 </inf>at 1500 nm, about 3 times of the reference TZN75 glass without any dopant and 27 times of the silicate glasses and fibers, and the response time is about 1 picosecond. &copy; 2011 SPIE-OSA-IEEE.

Number of references:14

Main heading:Silver

Controlled terms:Exhibitions - Glass - Nanocrystals - Nonlinear optics - Optical fibers - Photonics - Plasmons - Refractive index - Silicates - Surface plasmon resonance  - Tellurium compounds

Uncontrolled terms:All-optical switching - Degenerated four-wave mixing - Experimental conditions - Nonlinear characterization - Nonlinear refractive index - Optical nonlinearity - Silver nanocrystals - Surface plasmon resonance absorption

Classification code:902.2 Codes and Standards - 812.3 Glass - 812 Ceramics, Refractories and Glass - 804.1 Organic Compounds - 761 Nanotechnology - 741 Light, Optics and Optical Devices - 712.1 Semiconducting Materials - 547.1 Precious Metals - 414 Masonry Materials

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 186>

 

Accession number:20113214224386

Title:Terahertz TDS signal de-noising using wavelet shrinkage

Authors:Liang, Yuqing (1); Fan, Wenhui (1); Xue, Bing (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China

Corresponding author:Fan, W.(fanwh@opt.ac.cn)

Source title:Chinese Optics Letters

Abbreviated source title:Chin. Opt. Lett.

Volume:9

Issue:SUPPL. 1

Issue date:June 2011

Publication year:2011

Pages:S10504

Language:English

ISSN:16717694

Document type:Journal article (JA)

Publisher:Science Press, 18,Shuangqing Street,Haidian, Beijing, 100085, China

Abstract:The field of terahertz (THz) science and technology has achieved significant progress over the last decades. Research interest focuses on THz spectroscopy and imaging. The signal-to-noise ratio (SNR) of the THz system is of great importance in the application of THz spectroscopy and imaging. In this letter, the wavelet de-noising technology is used to improve SNR and increase the speed of the THz time-domain spectroscopy system by reducing the repeating times. &copy; 2011 Chinese Optics Letters.

Number of references:7

Main heading:Terahertz spectroscopy

Controlled terms:Excitons - Signal to noise ratio

Uncontrolled terms:De-noising - Science and Technology - Signal to noise - Terahertz - Thz spectroscopy - THz time domain spectroscopy - Wavelet denoising - Wavelet shrinkage

Classification code:716.1 Information Theory and Signal Processing - 931.1 Mechanics - 931.3 Atomic and Molecular Physics

DOI:10.3788/COL201109.S10504

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 187>

 

Accession number:20113714325927

Title:Technology research of high-definition CCD camera based on FPGA

Authors:Tian, Yan (1); Cao, Jian-Zhong (1); Yao, Da-Wei (1); Xu, Zhao-Hui (1); Huang, Jing (1)

Author affiliation:(1) CAS, Xi'an Institute of Optics and Precision Mechanics, Xi'an 710119, China

Corresponding author:Tian, Y.

Source title:Proceedings of SPIE - The International Society for Optical Engineering

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:8194

Monograph title:International Symposium on Photoelectronic Detection and Imaging 2011: Advances in Imaging Detectors and Applications

Issue date:2011

Publication year:2011

Article number:819425

Language:English

ISSN:0277786X

CODEN:PSISDG

ISBN-13:9780819488350

Document type:Conference article (CA)

Conference name:International Symposium on Photoelectronic Detection and Imaging 2011: Advances in Imaging Detectors and Applications

Conference date:May 24, 2011 - May 26, 2011

Conference location:Beijing, China

Conference code:86450

Sponsor:Chinese Society of Astronautics

Publisher:SPIE, P.O. Box 10, Bellingham, WA 98227-0010, United States

Abstract:This paper researches the digital high definition imaging technology and successfully designs a digital high definition camera system. The system takes large array CCD(KAI-2093CM) which conforms to SMEPT 274M standard as photoelectric transfer device, FPGA+AFE as framework, HD-SDI as transforming interface, and combines with the current advanced digital high definition video standard. The result of imaging shows that the high definition camera can realize high definition shooting. The pictures are clear and can be displayed with no stagnation in real time. Moreover, the small camera with high resolution can be applied for high definition shooting in aerospace and other fields. &copy; 2011 SPIE.

Number of references:4

Main heading:CCD cameras

Controlled terms:Computer graphics - Detectors - Digital television

Uncontrolled terms:Camera systems - CCD image sensors - Digital interfaces - High definition - High definition video - High resolution - High-definition imaging - Large arrays - Paper research - Real time  - Technology research

Classification code:714.2 Semiconductor Devices and Integrated Circuits - 716.4 Television Systems and Equipment - 723.5 Computer Applications - 914 Safety Engineering

DOI:10.1117/12.900523

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 188>

 

Accession number:20140817360287

Title:Enhanced low-index field confinement by radially stratified micro optical fibers

Authors:Zhang, Wenfu (1); Mu, Jian-Wei (3); Huang, Wei-Ping (3); Zhao, Wei (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (2) Graduate School of the Chinese Academy of Sciences, Beijing 100049, China; (3) Department of Electrical and Computer Engineering, McMaster University, Hamilton, ON L8S 4K1, Canada

Corresponding author:Zhang, W.(wfu.zhang@gmail.com)

Source title:Optics InfoBase Conference Papers

Abbreviated source title:Opt.InfoBase Conf. Papers

Monograph title:Slow and Fast Light, Slow_Fast 2011

Issue date:2011

Publication year:2011

Language:English

E-ISSN:21622701

ISBN-13:9781557529138

Document type:Conference article (CA)

Conference name:Slow and Fast Light, Slow_Fast 2011

Conference date:June 12, 2011  -  June 15, 2011

Conference location:Toronto, Canada

Conference code:102746

Publisher:Optical Society of America, 2010 Massachusetts Ave, NW, Washington, DC, DC 20036-1023, United States

Abstract:The ring micro-fiber is studied. The calculating results show that light can be concentrated in nanometer-thin low-index ring regions with very high confinement efficiency. &copy; OSA/ANIC/IPR/Sensors/SL/SOF/SPPCom/2011.

Number of references:4

Main heading:Optical fibers

Uncontrolled terms:High confinement - Micro-fiber

Classification code:741.1.2 Fiber Optics

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 189>

 

Accession number:20120114664525

Title:Deployment precision measurement modeling of a deployable space telescope based on tape springs

Authors:Li, Chuang (1); Feng, Xuegui (1)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, 710119, China; (2) Graduate University, Chinese Academy of Sciences, Beijing, 100049, China

Corresponding author:Li, C.(lichuang@opt.ac.cn)

Source title:Proceedings of SPIE - The International Society for Optical Engineering

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:8321

Monograph title:Seventh International Symposium on Precision Engineering Measurements and Instrumentation

Issue date:2011

Publication year:2011

Article number:83212R

Language:English

ISSN:0277786X

CODEN:PSISDG

ISBN-13:9780819479402

Document type:Conference article (CA)

Conference name:7th International Symposium on Precision Engineering Measurements and Instrumentation

Conference date:August 7, 2011 - August 11, 2011

Conference location:Lijiang, China

Conference code:87934

Sponsor:International Committee on Measurements and Instrumentation; National Natural Science Foundation of China

Publisher:SPIE, P.O. Box 10, Bellingham, WA 98227-0010, United States

Abstract:Tape springs have many advantages to develop spaced-based deployable systems because of their simple structures, light weights, high stiffness, and the abilities of self-deploy and self-lock. Their applications in deployable space structures make the spaced-based systems fulfill the requirements of light weight and compact launching volume. A new kind of deployable space telescope under research uses tape springs as the support structure of secondary mirror. Before launch, the support structure of secondary mirror is folded, and deployed when on orbit. In order to achieve near diffraction limited imaging quality, the deployment precision must reach the level consistent with the optical compensation system. We designed an accurate measuring system based on position sensitive detectors (PSDs) to measure the deployment precision. The measuring system includes 3 laser diodes, 3 two-dimensional PSDs around the primary mirror of the deployable telescope, and 3 small mirrors around the secondary mirror. The equations linking the PSD readings and the six-degree-of-freedom displacement of the secondary mirror were deduced. With these equations, the deployment errors can be resolved. &copy; 2011 Copyright Society of Photo-Optical Instrumentation Engineers (SPIE).

Number of references:8

Main heading:Mirrors

Controlled terms:End effectors - Ground supports - Measurements - Optical telescopes - Precision engineering - Space telescopes - Springs (components)

Uncontrolled terms:Deployable systems - Deployable telescopes - Diffraction limited - High stiffness - Imaging quality - Light weight - Measuring systems - On orbit - Optical compensation - Position-Sensitive Detectors  - Precision measurement - Primary mirrors - Secondary mirror - Self locks - Simple structures - Six-degree-of-freedom - Space structure - Support structures - tape spring - Tape springs

Classification code:943 Mechanical and Miscellaneous Measuring Instruments - 942 Electric and Electronic Measuring Instruments - 941 Acoustical and Optical Measuring Instruments - 944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments - 741.3 Optical Devices and Systems - 601.2 Machine Components - 483 Soil Mechanics and Foundations - 731.5 Robotics

DOI:10.1117/12.905134

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 190>

 

Accession number:20113614296276

Title:Temporal resolution of X-ray detector for pulsar navigation

Authors:Sheng, Li-Zhi (1); Zhao, Bao-Sheng (1); Hu, Hui-Jun (1); Wang, Peng (1); Yan, Qiu-Rong (1); Chen, Bao-Mei (1); Liu, Yong-An (1); Ouyang, Xiao-Ping (3); Chen, Ding (4)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, CAS, Xi'an 710119, China; (2) Graduate University of Chinese Academy of Sciences, Beijing 10039, China; (3) Northwestern Institute of Nuclear Technology, Xi'an 710024, China; (4) National Time Service Center, CAS, Xi'an 710600, China

Corresponding author:Sheng, L.-Z.

Source title:Proceedings of SPIE - The International Society for Optical Engineering

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:8196

Monograph title:International Symposium on Photoelectronic Detection and Imaging 2011: Space Exploration Technologies and Applications

Issue date:2011

Publication year:2011

Article number:81961C

Language:English

ISSN:0277786X

CODEN:PSISDG

ISBN-13:9780819488374

Document type:Conference article (CA)

Conference name:International Symposium on Photoelectronic Detection and Imaging 2011: Space Exploration Technologies and Applications

Conference date:May 24, 2011 - May 26, 2011

Conference location:Beijing, China

Conference code:86296

Sponsor:Chinese Society of Astronautics (CAS)

Publisher:SPIE, P.O. Box 10, Bellingham, WA 98227-0010, United States

Abstract:Pulsar navigation is a promising new technique for space exploration because of its autonomous and deep space capability. Since the baseline of pulsar navigation approach is to observe the X rays (0.2&sim;20keV) emitted from pulsars, a compact high temporal resolution X-ray detector is needed. In this paper an micro-channel plate(MCP) photon counting detector sensitive to X-rays is proposed. The detection system consists of a CsI photocathode, a 50mm diameter micro-channel plate (MCP) stack, a collection anode, a preamplifier, a constant fraction discriminator(CFD) and data acquisition(DAQ). The incident X-rays photons are absorbed by CsI and converted to photoelectrons, the electrons are multiplied by MCP and collected by the anode. Anode output signal is a fast pulse which need to be amplified by preamplifier and then fed to CFD circuit and DAQ for a precise timing. The total temporal resolution(&Delta;T) of the entire detection system could be determined by &Delta;t<inf>D</inf>, the intrinsic temporal resolution of cathode-MCP-anode, and &Delta;t<inf>E</inf> the resolution of electronic system including preamplifier and CFD. The resolution of the detection system is tested to be 18.4ns in experiment. &copy; 2011 SPIE.

Number of references:8

Main heading:Detectors

Controlled terms:Cathodes - Image storage tubes - Navigation - Photons - Space research - Timing circuits - X ray apparatus - X rays

Uncontrolled terms:Constant fraction discriminators - CsI photocathodes - Deep space - Detection system - Electronic systems - High temporal resolution - Micro channel plate - Output signal - Photon counting detectors - Pulsar navigation  - Space explorations - Temporal resolution - X-ray detector - X-rays photons

Classification code:914 Safety Engineering - 801 Chemistry - 741.1 Light/Optics - 932.1 High Energy Physics - 716.3 Radio Systems and Equipment - 713.4 Pulse Circuits - 656.2 Space Research - 714.1 Electron Tubes

DOI:10.1117/12.900678

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 191>

 

Accession number:20113714325938

Title:Research on UV detector technology and application in MAWS

Authors:Yao, Da-Wei (1); Hao, Wei (1); Yang, Xiao-Jun (1); Tian, Yan (1)

Author affiliation:(1) CAS, Xi'an Institute of Optics and Precision Mechanics, Xi'an 710119, China

Corresponding author:Yao, D.-W.

Source title:Proceedings of SPIE - The International Society for Optical Engineering

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:8194

Monograph title:International Symposium on Photoelectronic Detection and Imaging 2011: Advances in Imaging Detectors and Applications

Issue date:2011

Publication year:2011

Article number:819436

Language:English

ISSN:0277786X

CODEN:PSISDG

ISBN-13:9780819488350

Document type:Conference article (CA)

Conference name:International Symposium on Photoelectronic Detection and Imaging 2011: Advances in Imaging Detectors and Applications

Conference date:May 24, 2011 - May 26, 2011

Conference location:Beijing, China

Conference code:86450

Sponsor:Chinese Society of Astronautics

Publisher:SPIE, P.O. Box 10, Bellingham, WA 98227-0010, United States

Abstract:The atmospheric transmission characteristics of ultraviolet radiation are unique, which have made ultraviolet detecting technology has been developed rapidly in military application domain. Missile approaching warning system based UV detecting technology distinguish target by detecting the ultraviolet radiation in solar blind spectrum from missile's plumes. This warning system is a passive warning system, which has advantages of good concealment, low false-alarm rate, cooling without low temperature, small size and light weight. It has been an important part of modern battlefield in the electro-optical countermeasure domain This paper expatiate the principle of ultraviolet detecting technology and introduce the developments about ultraviolet warning and related technology, including the ultraviolet transmission in the atmosphere, the ultraviolet radiance characteristic of target and background, the ultraviolet photoelectric detectors, and the ultraviolet detection technology. A suit of ultraviolet photoelectric imaging system has been designed. This system is made up of three parts, there are narrowband ultraviolet optical system in large field, ultraviolet ICCD camera and ultraviolet warming image processing device. A great deal of imaging experiments about ultraviolet target in several kinds of typical meteorological condition have been done, these images shows the system is efficient and reasonable. The characteristics of ultraviolet objective imaging be tested and evaluated by analyze the experiment images obtained by the system. This system provide theoretical and test bases for engineering research on ultraviolet missile approaching warning system. &copy; 2011 SPIE.

Number of references:4

Main heading:Technology

Controlled terms:Digital image storage - Experiments - Image processing - Imaging systems - Military applications - Missiles - Optical data processing - Optical systems - Photoelectricity - Radiation detectors  - Solar radiation - Ultraviolet radiation

Uncontrolled terms:Atmospheric transmissions - Detecting technology - Electro-optical - False-alarm rates - ICCD cameras - Imaging experiments - Light weight - Low temperatures - Meteorological condition - Narrow bands  - Photoelectric detectors - Processing device - Sensitive - Small size - Solar blind - Target and background - Target imaging - Ultra violet detection - Ultraviolet transmission - UV detector

Classification code:944.7 Radiation Measuring Instruments - 901.3 Engineering Research - 901 Engineering Profession - 746 Imaging Techniques - 741 Light, Optics and Optical Devices - 657.1 Solar Energy and Phenomena - 404.1 Military Engineering

DOI:10.1117/12.901021

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 192>

 

Accession number:20114214428935

Title:Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics): Preface

Authors:Suzuki, Kenji (1); Wang, Fei (2); Shen, Dinggang (3); Yan, Pingkun (4)

Author affiliation:(1) University of Chicago, Chicago, IL 60637, United States; (2) IBM Research Almaden, San Jose, CA 95120, United States; (3) University of North Carolina, Chapel Hill, NC 27510, United States; (4) Chinese Academy of Sciences, Xian Institute of Optics and Precision Mechanics, Xi'an, Shaanxi 710119, China

Corresponding author:Suzuki, K.(suzuki@uchicago.edu)

Source title:Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)

Abbreviated source title:Lect. Notes Comput. Sci.

Volume:7009 LNCS

Monograph title:Machine Learning in Medical Imaging - Second International Workshop, MLMI 2011, Held in Conjunction with MICCAI 2011, Proceedings

Issue date:2011

Publication year:2011

Pages:V-VI

Language:English

ISSN:03029743

E-ISSN:16113349

ISBN-13:9783642243189

Document type:Journal article (JA)

Conference name:2nd International Workshop on Machine Learning in Medical Imaging, MLMI 2011, in Conjunction with the 14th International Conference on Medical Image Computing and Computer-Assisted Intervention, MICCAI 2011

Conference date:September 18, 2011 - September 18, 2011

Conference location:Toronto, ON, Canada

Conference code:86896

Publisher:Springer Verlag, Tiergartenstrasse 17, Heidelberg, D-69121, Germany

DOI:10.1007/978-3-642-24319-6

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 193>

 

Accession number:20113314236778

Title:Experimental study on the imaging of the squeezed state light at 1064 nm

Authors:Chen, L. (1); Bi, S.W. (1); Lu, B.Z. (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China

Corresponding author:Chen, L.(luye@opt.ac.cn)

Source title:Laser Physics

Abbreviated source title:Laser Phys.

Volume:21

Issue:7

Issue date:July 2011

Publication year:2011

Pages:1202-1207

Language:English

ISSN:1054660X

E-ISSN:15556611

Document type:Journal article (JA)

Publisher:Maik Nauka-Interperiodica Publishing, Profsoyuznaya Ul 90, Moscow, 117997, Russia

Abstract:Stable, low noise, infrared squeezed state tight at 1064 nm is generated by utilizing optical parametric down-conversion (OPDC) technique based on periodically poled KTiOPO<inf>4</inf> in a optical parametric amplifier (OPA) resonator. A non-classical noise reduction of 2.58 dB below the shot noise is observed through balanced homodyne detection. The squeezed state light is used to set up an imaging system for high-resolution imaging, and it is found that the resolution of image based on the amplitude-squeezed light is 1.26 times larger than that of infrared coherent light under the same intensity. The experimental results indicate that squeezed light is an important non-classical light, which can overcome the coherent laser shot-noise, the classical diffraction limit and limit of quantum noise. &copy; 2011 Pleiades Publishing, Ltd.

Number of references:40

Main heading:Quantum optics

Controlled terms:Light amplifiers - Optical frequency conversion - Parametric amplifiers

Uncontrolled terms:1064 nm - Balanced homodyne detection - Diffraction limits - Experimental studies - High-resolution imaging - Image-based - Low noise - Non-classical lights - Optical parametric amplifiers - Parametric down-conversion  - Periodically poled - Squeezed light - Squeezed state

Classification code:713.1 Amplifiers - 741 Light, Optics and Optical Devices

DOI:10.1134/S1054660X11130056

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 194>

 

Accession number:20113814348363

Title:Modulation instability of low-amplitude quasi-plane-wave optical beams in biased photorefractive crystals

Authors:Zhang, Xianfeng (1); Lu, Keqing (1); Tian, Ning (1); Miao, Changyun (1); Li, Hongqiang (1); Wang, Sasa (1); Li, Kehao (2)

Author affiliation:(1) School of Information and Communication Engineering, Tianjin Polytechnic University, Tianjin 300160, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academic of Sciences, China

Corresponding author:Zhang, X.(xiaozuo2011@gmail.com)

Source title:2011 International Conference on Control, Automation and Systems Engineering, CASE 2011

Abbreviated source title:Int. Conf. Control, Autom. Syst. Eng., CASE

Monograph title:2011 International Conference on Control, Automation and Systems Engineering, CASE 2011

Issue date:2011

Publication year:2011

Article number:5997527

Language:English

ISBN-13:9781457708602

Document type:Conference article (CA)

Conference name:2011 International Conference on Control, Automation and Systems Engineering, CASE 2011

Conference date:July 30, 2011 - July 31, 2011

Conference location:Singapore, Singapore

Conference code:86552

Sponsor:Singapore Management University

Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States

Abstract:We present a study of the modulation instability of low-amplitude broad optical beams in biased photorefractive crystals under steady-state conditions. The modulation instability growth rate can be obtained provided that E <inf>0</inf> is positive quantity, where E<inf>0</inf> is the field constant correlated with terms in the space-charge field. Our analysis indicates that the growth rates depend on E<inf>0</inf> and the ratio of the optical beam's intensity to that of the dark irradiance, and the maximum modulation instability gain as well as the corresponding spatial-frequency increase with increasing E<inf>0</inf> and the ratio of the optical beam's intensity to that of the dark irradiance. Relevant examples are provided where the photorefractive crystal is assumed to be of strontium barium niobate type. &copy; 2011 IEEE.

Number of references:15

Main heading:Photorefractive crystals

Controlled terms:Barium - Barium compounds - Crystals - Modulation - Niobium compounds - Optical bistability - Photoreactivity - Photovoltaic effects - Solitons - Stability  - Strontium - Systems engineering

Uncontrolled terms:Low-amplitude - Modulation instabilities - Optical beams - Space charge field - Spatial solitons - Steady-state condition - Strontium barium niobate

Classification code:961 Systems Science - 801.4 Physical Chemistry - 804.1 Organic Compounds - 912 Industrial Engineering and Management - 931 Classical Physics; Quantum Theory; Relativity - 931.3 Atomic and Molecular Physics - 951 Materials Science - 801 Chemistry - 741.1 Light/Optics - 718 Telephone Systems and Related Technologies; Line Communications - 717 Optical Communication - 716 Telecommunication; Radar, Radio and Television - 549.2 Alkaline Earth Metals - 741.1.1 Nonlinear Optics

DOI:10.1109/ICCASE.2011.5997527

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 195>

 

Accession number:20113314241580

Title:Some observations on plasma-assisted combustion enhancement using dielectric barrier discharges

Authors:Tang, Jie (1); Zhao, Wei (1); Duan, Yixiang (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics of CAS, Xi'an, China; (2) Research Center of Analytical Instrumentation, Sichuan University, Chengdu, China

Corresponding author:Duan, Y.(yduan@scu.edu.cn)

Source title:Plasma Sources Science and Technology

Abbreviated source title:Plasma Sources Sci Technol

Volume:20

Issue:4

Issue date:August 2011

Publication year:2011

Article number:045009

Language:English

ISSN:09630252

E-ISSN:13616595

CODEN:PSTEEU

Document type:Journal article (JA)

Publisher:Institute of Physics Publishing, Temple Circus, Temple Way, Bristol, BS1 6BE, United Kingdom

Abstract:We explore an effective way to promote propane combustion by applying a plasma discharge for efficiency enhancement. A coaxial-cylinder, dielectric barrier discharge is used to activate propane and air before they are mixed with each other and ignited for combustion. The characteristics of the combustion flame are well studied and evaluated by varying various operational parameters. It is found that the combustion process can be enhanced by applying a plasma on either the propane or air stream, and the combustion stability is found to be somewhat sensitive to the lean burning conditions and confined to a relatively narrow operating window. The temperature and spectrum of the flame in the main combustion zone are investigated with a 4 W plasma in the on or off state. The main components are identified, and the possible physical and chemical reaction mechanisms are discussed. A comparative analysis of these spectra and temperatures obtained in the main flame suggests that the energy generated from the 4 W plasma is partially used to heat the reaction gases in the flame, and another part of the energy is used to increase the luminosity, especially for activation of air. We also observe that combustion of high flow rate propane and/or air requires more discharge energy density under certain conditions. A comparison of combustion enhancement through different activation methods in flame blowout tests shows that reactive species derived from activation of air play a more critical role in the blowout limit of propane combustion flame than those generated by activation of propane at low equivalence ratio and propane flow. &copy; 2011 IOP Publishing Ltd.

Number of references:23

Main heading:Combustion

Controlled terms:Activation analysis - Blowouts - Dielectric devices - Electric discharges - Gas fuel analysis - Plasma applications - Plasma diagnostics - Plasma stability - Plasmas - Propane

Uncontrolled terms:Activation method - Air streams - Combustion enhancement - Combustion flames - Combustion pro-cess - Combustion stability - Combustion zones - Comparative analysis - Dielectric barrier discharges - Discharge energy density  - Efficiency enhancement - Equivalence ratios - High-flow rate - Main component - Operating windows - Operational parameters - Plasma discharge - Propane combustion - Reaction gas - Reaction mechanism  - Reactive species

Classification code:801 Chemistry - 714 Electronic Components and Tubes - 704 Electric Components and Equipment - 932.3 Plasma Physics - 701.1 Electricity: Basic Concepts and Phenomena - 521.1 Fuel Combustion - 512.2 Natural Gas Deposits - 522 Gas Fuels

DOI:10.1088/0963-0252/20/4/045009

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 196>

 

Accession number:20113114199055

Title:Synthesis and saturable absorption of graphene with wet-chemistry techniques

Authors:Wang, Jin (1); Li, Ning (1); Liu, Chunxiao (1); Zhou, Yan (1); Wei, Wei (1); Peng, Bo (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Acad. of Sci., Xi'an, Shaanxi 710119, China; (2) Institute of Advanced Materials, Nanjing University of Posts and Telecommunications, Nanjing, Jiangsu 210003, China

Corresponding author:Peng, B.(bpeng@opt.ac.cn)

Source title:Guangxue Xuebao/Acta Optica Sinica

Abbreviated source title:Guangxue Xuebao

Volume:31

Issue:SUPPL.1

Issue date:June 2011

Publication year:2011

Article number:s100106

Language:Chinese

ISSN:02532239

CODEN:GUXUDC

Document type:Journal article (JA)

Publisher:Chinese Optical Society, P.O. Box 80, Xi'an, 710068, China

Abstract:A graphene-water solution and graphene-polyvinyl alcohol composite are fabricated from graphite by wet-chemistry techniques. The research shows that both of graphene solutions and the composite have saturable absorption ability. The atomic layer grapheme possesses wavelength-independent ultrafast saturable absorption, which can be realized mode-locking in a large-wide-range wavelength. The cost of the atomic layer graphene is far lower than that of semiconductor saturable absorber mirror (SESAM) as a mode-locker.

Number of references:24

Main heading:Graphene

Controlled terms:Polyvinyl alcohols - Semiconductor quantum wells - Water absorption

Uncontrolled terms:Atomic layer - Modelocking - Saturable absorption - Semiconductor saturable absorber mirrors - Ultra-fast - Wet-chemistry

Classification code:714.2 Semiconductor Devices and Integrated Circuits - 761 Nanotechnology - 802.3 Chemical Operations - 804 Chemical Products Generally - 815.1.1 Organic Polymers

DOI:10.3788/AOS201131.s100106

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 197>

 

Accession number:20113714320244

Title:Applications of digital if receivers and under-sampling technique in ladar

Authors:Song, Zhi-Yuan (1); Zhu, Shao-Lan (1); Dong, Li-Jun (1); Feng, Li (1); He, Hao-Dong (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (2) Graduate University of Chinese Academy of Sciences, Beijing 10039, China

Corresponding author:Song, Z.-Y.

Source title:Proceedings of SPIE - The International Society for Optical Engineering

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:8192

Monograph title:International Symposium on Photoelectronic Detection and Imaging 2011: Laser Sensing and Imaging; and Biological and Medical Applications of Photonics Sensing and Imaging

Issue date:2011

Publication year:2011

Article number:819249

Language:English

ISSN:0277786X

CODEN:PSISDG

ISBN-13:9780819488336

Document type:Conference article (CA)

Conference name:International Symposium on Photoelectronic Detection and Imaging 2011: Laser Sensing and Imaging; and Biological and Medical Applications of Photonics Sensing and Imaging

Conference date:May 24, 2011 - May 26, 2011

Conference location:Beijing, China

Conference code:86437

Sponsor:Chinese Society of Astronautics

Publisher:SPIE, P.O. Box 10, Bellingham, WA 98227-0010, United States

Abstract:The traditional technique of phase laser range finder is mixing high frequency signals with analog circuits and filtering them to obtain the useful signal with low frequency. But the analog mixing circuits are susceptible to interference and will bring amplitude attenuation, phase jitter and offset and this way has difficulties in achieving high precision ranging and fast speed ranging at the same time. The method of this paper is based on under-sampling technique with digital synchronous detection and referring to Digital down converter technique of digital IF receiver in radar system. This method not only reduces the complexity of data processing, improves the speed and accuracy of phase detection at the same time, but also reduces requirements for ADC devices and DSP chips in the ladar system by a lower sampling rate. At the same time, the structure of electronic system is global simplified compared with traditional analog ladar system and the anti-jamming is greatly enhanced. So this method has important research value. &copy; 2011 SPIE.

Number of references:6

Main heading:Digital circuits

Controlled terms:Analog circuits - Data handling - Jitter - Medical applications - Medical imaging - Optical radar - Radar systems - Signal detection - Signal receivers

Uncontrolled terms:Anti-jamming - Digital down converter - Digital-IF Receivers - Down converters - DSP chip - Electronic systems - High frequency signals - High precision - Ladar systems - Laser range finders  - Low frequency - Phase detection - Sampling rates - Synchronous detection - Traditional techniques - Under-sampling

Classification code:723.2 Data Processing and Image Processing - 718 Telephone Systems and Related Technologies; Line Communications - 717 Optical Communication - 716 Telecommunication; Radar, Radio and Television - 713.5 Electronic Circuits Other Than Amplifiers, Oscillators, Modulators, Limiters, Discriminators or Mixers - 713 Electronic Circuits - 461.1 Biomedical Engineering

DOI:10.1117/12.901928

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 198>

 

Accession number:20111013714593

Title:Dual-wavelength step-like pulses in an ultra-large negative-dispersion fiber laser

Authors:Mao, Dong (1); Liu, Xueming (1); Wang, Leiran (1); Lu, Hua (1); Duan, Lina (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China

Corresponding author:Mao, D.

Source title:Optics Express

Abbreviated source title:Opt. Express

Volume:19

Issue:5

Issue date:February 28, 2011

Publication year:2011

Pages:3996-4001

Language:English

E-ISSN:10944087

Document type:Journal article (JA)

Publisher:Optical Society of America, 2010 Massachusetts Ave, NW, Washington, DC, DC 20036-1023, United States

Abstract:We report on experimental observation of dual-wavelength step-like pulses delivered from an erbium-doped fiber laser operating in ultra-large negative-dispersion regime. The step-like pulses consist of two rectangular pulses with different energies, durations as well as optical spectra, and are distinct from the conventional multi-solitons or bound-state solitons in that each pulse holds the same property. We find the weaker (or stronger) rectangular pulse in step-like pulses is more sensitive to the backward (or forward) pump while is less sensitive to the forward (or backward) pump. Our results demonstrate that the dual-wavelength operation results from the combination of fiber dispersion, fiber birefringence, as well as cavity filtering effect, and the intensity difference between rectangular pulses can be attributed to different gain characteristics of the forward and backward pump. &copy; 2011 Optical Society of America.

Number of references:27

Main heading:Fiber lasers

Controlled terms:Erbium - Fibers - Pumps - Radar tracking - Solitons

Uncontrolled terms:Backward pumps - Bound state - Dual-wavelength - Erbium doped fiber laser - Experimental observation - Fiber birefringence - Fiber dispersion - Filtering effects - Gain characteristic - Intensity difference  - Optical spectra - Rectangular pulse

Classification code:931.3 Atomic and Molecular Physics - 817 Plastics and Other Polymers: Products and Applications - 812 Ceramics, Refractories and Glass - 741.1.2 Fiber Optics - 716.2 Radar Systems and Equipment - 618.2 Pumps - 547.2 Rare Earth Metals

DOI:10.1364/OE.19.003996

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 199>

 

Accession number:20112914149153

Title:Influences of the thickness, misalignment, and dispersion of the Savart polariscope on the optical path difference and spectral resolution in the polarization interference imaging spectrometer

Authors:Zhang, Chunmin (1); Zhao, Jianke (1); Sun, Yao (1)

Author affiliation:(1) Ministry of Education Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, School of Science, Xi'an Jiaotong University, Xi'an 710049, China; (2) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (3) Mindray Medical International Limited, Shenzhen 518057, China

Corresponding author:Zhang, C.(zcm@mail.xjtu.edu.cn)

Source title:Applied Optics

Abbreviated source title:Appl. Opt.

Volume:50

Issue:20

Issue date:July 10, 2011

Publication year:2011

Pages:3497-3504

Language:English

ISSN:1559128X

E-ISSN:15394522

CODEN:APOPAI

Document type:Journal article (JA)

Publisher:Optical Society of America, 2010 Massachusetts Ave, NW, Washington, DC, DC 20036-1023, United States

Abstract:After reviewing the spectrum-dividing principle of the Savart polariscope (SP) in the polarization interference imaging spectrometer (PIIS) that we developed, we analyze the influences of the thickness, misalignment, and dispersion of the SP on the optical path difference (OPD). The theoretical expression of the OPD for the misalignment of the SP optical axis is deduced, and the OPD is analyzed when the incident plane is parallel, at 45&deg;, or orthogonal to the principal section of the left plate of the SP. The selective thickness of the single Savart plate is analyzed when it is placed at the ideal and misalignment positions. The influence of dispersion of the SP on the OPD is analyzed when the misalignment error is &plusmn;1'. The relationships between the OPD and wavelength are simulated and validated with experiments. This work can provide theoretical and practical guidance for the design, calibration, modulation, innovation, experiment, and engineering of the PIIS. &copy; 2011 Optical Society of America.

Number of references:35

Main heading:Alignment

Controlled terms:Dispersion (waves) - Experiments - Innovation - Polariscopes - Polarization - Ray tracing - Spectrometers - Spectrometry

Uncontrolled terms:Misalignment errors - Optical axis - Optical path difference - Polarization interferences - Practical guidance - Savart plate - Savart polariscope - Spectrum-dividing - Theoretical expression

Classification code:941.3 Optical Instruments - 912 Industrial Engineering and Management - 901.3 Engineering Research - 801 Chemistry - 741.1 Light/Optics - 711.1 Electromagnetic Waves in Different Media - 601.1 Mechanical Devices

DOI:10.1364/AO.50.003497

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 200>

 

Accession number:20111613915823

Title:Observations of four types of pulses in a fiber laser with large net-normal dispersion

Authors:Wang, Leiran (1); Liu, Xueming (1); Gong, Yongkang (1); Mao, Dong (1); Duan, Lina (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China

Corresponding author:Wang, L.

Source title:Optics Express

Abbreviated source title:Opt. Express

Volume:19

Issue:8

Issue date:April 11, 2011

Publication year:2011

Pages:7616-7624

Language:English

E-ISSN:10944087

Document type:Journal article (JA)

Publisher:Optical Society of America, 2010 Massachusetts Ave, NW, Washington, DC, DC 20036-1023, United States

Abstract:Four different types of pulses are experimentally obtained in one erbium-doped all-fiber laser with large net-normal dispersion. The proposed laser can deliver the rectangular-spectrum (RS), Gaussian-spectrum (GS), broadband-spectrum (BS), and noise-like pulses by appropriately adjusting the polarization states. These kinds of pulses have distinctly different characteristics. The RS pulses can easily be compressed to femtosecond level whereas the pulse energy is restricted by the trend of multi-pulse shaping with excessive pump. The GS and BS pulses always maintain the single-pulse operation with much higher pulse-energy and accumulate much more chirp. After launching the pulses into the photonic-crystal fiber, the supercontinuum can be generated with the bandwidth of &gt;700 nm by the BS pulses and of &sim;400 nm by the GS pulses, whereas it can hardly be generated by the RS pulses. The physical mechanisms behind the continuum generation are qualitatively investigated relating to different operating regimes. This work could help to a deeper insight of the normal-dispersion pulses. &copy;2011 Optical Society of America.

Number of references:31

Main heading:Optical pumping

Controlled terms:Dispersions - Erbium - Fiber lasers - Optical waveguides

Uncontrolled terms:All-fiber lasers - Continuum generations - Dispersion pulse - Erbium doped - Femtoseconds - Gaussians - Multipulses - Normal dispersion - Operating regimes - Physical mechanism  - Polarization state - Pulse energies - Single-pulse - Supercontinuum

Classification code:547.2 Rare Earth Metals - 741 Light, Optics and Optical Devices - 951 Materials Science

DOI:10.1364/OE.19.007616

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 201>

 

Accession number:20120314700421

Title:High power tunable picosecond green laser pulse generation by frequency doubling of an Yb-doped fiber power amplifier seeded by a gain switch laser diode

Authors:Liu, H.J. (1); Li, X.F. (2)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics Technology, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (2) Department of Applied Mathematics and Physics, Xi'an Institute of Post and Telecom, Xi'an 710121, China

Corresponding author:Liu, H.J.(liuhongjun@opt.ac.cn)

Source title:Laser Physics

Abbreviated source title:Laser Phys.

Volume:21

Issue:12

Issue date:December 2011

Publication year:2011

Pages:2118-2121

Language:English

ISSN:1054660X

E-ISSN:15556611

Document type:Journal article (JA)

Publisher:Maik Nauka-Interperiodica Publishing, Profsoyuznaya Ul 90, Moscow, 117997, Russia

Abstract:A compact tunable high power picosecond green laser pulse source based on frequency doubling of an Yb-doped fiber amplifier seeded by a gain switch laser diode has been developed. The fiber amplifier generates the picosecond infrared pulses with average power of 10.3 W, repetition rate of 1 MHz, pulse duration of 150 ps, and tunable range of 20 nm around 1064 nm. For underwater use, the tunable output infrared pulses are frequency doubled into picosecond green laser pulses, which can be tuned from 527 to 537 nm with average power of more than 1.1 W, corresponding to an overall conversion efficiency of 10.7% by a BBO nonlinear crystal. This kind of laser source will have potential application for underwater optical communication. &copy; Pleiades Publishing, Ltd., 2011.

Number of references:21

Main heading:Pulse generators

Controlled terms:Conversion efficiency - Fiber amplifiers - Frequency doublers - Infrared lasers - Optical communication - Power amplifiers - Pulse repetition rate - Ytterbium

Uncontrolled terms:1064 nm - Average power - Frequency-doubling - Gain switch - Green laser - High-power - Infrared pulse - Laser sources - Nonlinear crystals - Overall conversion efficiency  - Picoseconds - Potential applications - Pulse durations - Pulse generation - Pulse sources - Repetition rate - Yb-doped fibers

Classification code:525.5 Energy Conversion Issues - 547.2 Rare Earth Metals - 713 Electronic Circuits - 717.1 Optical Communication Systems - 744.1 Lasers, General - 744.4 Solid State Lasers

DOI:10.1134/S1054660X11210146

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 202>

 

Accession number:20112013987704

Title:Analysis and comparison of pulse broadening caused by atmospheric turbulence and dispersion

Authors:Lu, Hong-Qiang (1); Zhao, Wei (1); Xie, Xiao-Ping (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, Shaanxi, China; (2) Graduate School, Chinese Academy of Sciences, Beijing 100039, China

Corresponding author:Lu, H.-Q.(luhongqiang@opt.ac.cn)

Source title:Binggong Xuebao/Acta Armamentarii

Abbreviated source title:Binggong Xuebao

Volume:32

Issue:4

Issue date:April 2011

Publication year:2011

Pages:432-438

Language:Chinese

ISSN:10001093

CODEN:BIXUD9

Document type:Journal article (JA)

Publisher:China Ordnance Society, P.O. Box 2431, Beijing, 100081, China

Abstract:The temporal broadening of optical pulses in satellite-earth laser communication systems. The expression of turbulence-induced pulse width broadening was given, in which the turbulent atmosphere index-of-refraction structure constant, propagation distance, zenith angle and original pulse width were considered. Based on the measured datum of atmospheric parameters, the refractive index in 1.55&mu;m was derived and the relationship of dispersion-induced pulse broadening to the spectral width, propagation distance, zenith angle, original pulse width and the wavelength of optical signal was obtained. The simulation results show that the turbulence-induced pulse broadening can be neglected for the pulse width greater than 0.5 ps, however, the dispersion-induced pulse broadening can be neglected for the pulse width larger than 20 ps. The received pulse width and maximum achievable bandwidth are calculated in this paper under certain conditions.

Number of references:17

Main heading:Atmospheric turbulence

Controlled terms:Atmospheric thermodynamics - Bandwidth - Communication systems - Dispersion (waves) - Dispersions - Integrated optics - Optical communication - Refractive index - Satellite communication systems

Uncontrolled terms:Achievable bandwidth - Atmospheric dispersion - Atmospheric parameters - Laser communication system - Measured data - Optical pulse - Optical signals - Propagation distances - Pulse broadening - Pulse width  - Pulse width broadening - Simulation result - Spectral widths - Structure constants - Temporal broadening - Turbulent atmosphere - Zenith angle

Classification code:741.3 Optical Devices and Systems - 741.1 Light/Optics - 717.1 Optical Communication Systems - 951 Materials Science - 716.1 Information Theory and Signal Processing - 711.1 Electromagnetic Waves in Different Media - 443.1 Atmospheric Properties - 716 Telecommunication; Radar, Radio and Television

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 203>

 

Accession number:20111313859598

Title:Single-image super-resolution via local learning

Authors:Tang, Yi (1); Yan, Pingkun (1); Yuan, Yuan (1); Li, Xuelong (1)

Author affiliation:(1) Center for OPTical IMagery Analysis and Learning (OPTIMAL), State Key Laboratory of Transient Optics and Photonics, Chinese Academy of Sciences, Xi'an Institute of Optics and Precision Mechanics, Xi'an 710119 Shaanxi, China

Corresponding author:Yan, P.(pingkun@ieee.org)

Source title:International Journal of Machine Learning and Cybernetics

Abbreviated source title:Intl. J. Mach. Learn. Cybern.

Volume:2

Issue:1

Issue date:March 2011

Publication year:2011

Pages:15-23

Language:English

ISSN:18688071

E-ISSN:1868808X

Document type:Journal article (JA)

Publisher:Springer Verlag, Tiergartenstrasse 17, Heidelberg, D-69121, Germany

Abstract:Nearest neighbor-based algorithms are popular in example-based super-resolution from a single image. The core idea behind such algorithms is that similar images are close in the sense of distance measurement. However, it is well known in the field of machine learning and statistical learning theory that the generalization of the nearest neighbor-based estimation is poor, when complex or high dimensional data are considered. To improve the power of the nearest neighbor-based algorithms in single-image based super-resolution, a local learning method is proposed in this paper. Similar to the nearest neighbor-based algorithms, a local training set is generated according to the similarity between the training samples and a given test sample. For super-resolving the given test sample, a local regression function is learned on the local training set. The generalization of nearest neighbor-based algorithms can be enhanced by the process of local regression. Based on such an idea, we propose a novel local-learning-based algorithm, where kernel ridge regression algorithm is used in local regression for its well generalization. Some experimental results verify the effectiveness and efficiency of the local learning algorithm in single-image based super-resolution. &copy; 2011 Springer-Verlag.

Number of references:30

Main heading:Learning algorithms

Controlled terms:Clustering algorithms - Learning systems - Optical resolving power - Regression analysis

Uncontrolled terms:Generalization - Kernel ridge regression - Local learning - Reproducing kernel - Similarity - Super resolution

Classification code:721 Computer Circuits and Logic Elements - 723 Computer Software, Data Handling and Applications - 741.1 Light/Optics - 922.2 Mathematical Statistics

DOI:10.1007/s13042-011-0011-6

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 204>

 

Accession number:20120714765566

Title:Optical design of ground scenery simulator

Authors:Chang, Lingying (1); Zhao, Baochang (2); Yang, Jianfeng (2); Chen, Liwu (2); He, Yinghong (2)

Author affiliation:(1) School of Electronic Engineering, Xi'an Institute of Posts and Telecommunication, Xi'an 710121, China; (2) Xi'an Institute Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China

Corresponding author:Chang, L.(Sophia_chang@126.com)

Source title:Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering

Abbreviated source title:Hongwai yu Jiguang Gongcheng Infrared Laser Eng.

Volume:40

Issue:12

Issue date:December 2011

Publication year:2011

Pages:2437-2441

Language:Chinese

ISSN:10072276

Document type:Journal article (JA)

Publisher:Chinese Society of Astronautics, P.O. Box 225-32, Tianjin, 300192, China

Abstract:In order to realize rapid image quality of CCD stereo camera and imaging spectrometer, an optical system applied in ground scenery simulator was designed. First, the optical system scheme of ground scenery simulator was described. Then on the basis of instrument and system considerations, the optical design parameters were distributed reasonably. The capital optical parameters of the designed system were as follow: f' was 150 mm, 2&omega; was 10&deg;, spatial resolution was 36 lp/mm and spectrum range was 0.48-0.96 &mu;m. The design result shows that the optical system of ground scenery simulator has almost no effect on image quality of CCD stereo camera and imaging spectrometer. The MTF value of its Nyquist special frequency is almost the same with that of CCD stereo camera and imaging spectrometer. It provides a basis for judging the normal state of CCD stereo camera and imaging spectrometer scientifically.

Number of references:11

Main heading:CCD cameras

Controlled terms:Image quality - Optical design - Optical systems - Simulators - Spectrometers - Spectrometry

Uncontrolled terms:Design parameters - Imaging spectrometers - Interference imaging spectrometer - Normal state - Nyquist - Optical parameter - Spatial resolution - Spectrum range - Stereo cameras

Classification code:621 Nuclear Reactors - 671 Naval Architecture - 714.2 Semiconductor Devices and Integrated Circuits - 741 Light, Optics and Optical Devices

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 205>

 

Accession number:20111513898919

Title:Development of testing system for the stability of organic light emitting devices

Authors:Zhang, Wenwen (1); Wu, Zhaoxin (2); Zhu, Renlong (2); Hou, Xun (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (2) Key Laboratory for Physical Electronics and Devices of the Ministry of Education, Xi'an Jiaotong University, Xi'an 710049, China; (3) Key Laboratory of Photonics Technology for Information of Shaanxi Province, Xi'an Jiaotong University, Xi'an 710049, China

Corresponding author:Wu, Z.

Source title:Hsi-An Chiao Tung Ta Hsueh/Journal of Xi'an Jiaotong University

Abbreviated source title:Hsi An Chiao Tung Ta Hsueh

Volume:45

Issue:2

Issue date:February 2011

Publication year:2011

Pages:64-67+72

Language:Chinese

ISSN:0253987X

CODEN:HCTPDW

Document type:Journal article (JA)

Publisher:Xi'an Jiaotong University, West Xian Ning Road 28, Xi'an, 710049, China

Abstract:A novel testing system for stability of organic light emitting devices (OLED) is proposed to improve the circuital complexity and high cost of existing systems. The proposed system employs the high precision IC operational amplifiers to achieve driving power supply, and uses silicon photocells to capture brightness of OLED. Then an acquisition board based on PCI bus is used to obtain the data concerning the variation of brightness and voltage of OLED. The testing system can provide two different power sources, i. e. , a constant current source and a hybrid current-voltage source (a constant current source for direct bias and a constant voltage source for reverse bias). Silicon photocells are used to replace traditional brightness photometers so that costs are substantially reduced, while the use of the acquisition board based on PCI bus decreases development difficulty and shortens the development time. Testing results show that the system is competent to measure luminance delay and voltage raising, and is stable and reliable.

Number of references:12

Main heading:System stability

Controlled terms:Bias voltage - Instruments - Interfaces (computer) - Light emission - Operational amplifiers - Photoelectric cells

Uncontrolled terms:Constant current source - Constant voltage - Development time - Driving power supply - Existing systems - High costs - High precision - Hybrid currents - Novel testing - Organic light emitting device  - Organic light-emitting devices - PCI bus - Power sources - Reverse bias - Testing results - Testing systems

Classification code:944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments - 943 Mechanical and Miscellaneous Measuring Instruments - 942 Electric and Electronic Measuring Instruments - 941 Acoustical and Optical Measuring Instruments - 961 Systems Science - 741.3 Optical Devices and Systems - 722.2 Computer Peripheral Equipment - 713.1 Amplifiers - 713 Electronic Circuits - 741.1 Light/Optics

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 206>

 

Accession number:20113214224373

Title:Diagnostics of air plasma ablated by 1064 nm laser pulses

Authors:Luo, Wenfeng (1); Zhao, Wei (1); Duan, Yixiang (1); Wang, Haojing (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China

Corresponding author:Luo, W.(luowf@opt.ac.cn)

Source title:Chinese Optics Letters

Abbreviated source title:Chin. Opt. Lett.

Volume:9

Issue:SUPPL. 1

Issue date:June 2011

Publication year:2011

Pages:S10303

Language:English

ISSN:16717694

Document type:Journal article (JA)

Publisher:Science Press, 18,Shuangqing Street,Haidian, Beijing, 100085, China

Abstract:The characteristics of air plasma are studied using laser-induced breakdown spectroscopy at room temperature in air at atmospheric pressure. The electron temperature of 20796 K is determined using the Boltzmann plot method with six ionic nitrogen lines at 444.703, 463.054, 500.515, 566.663, 594.165, and 648.205 nm. The electron number density inferred by measuring the Stark broadened profile of well-isolated H<inf>&alpha;</inf> line (656.273 nm) is 1.83 &times; 10¹⁷ cm^-3. The hypotheses of the local thermodynamic equilibrium and optically thin plasma are verified based on the experimental results. These results are beneficial for better understanding of the terahertz (THz) wave generation in pulsed laser induced air plasma. &copy; 2011 Chinese Optics Letters.

Number of references:18

Main heading:Pulsed lasers

Controlled terms:Atmospheric pressure - Atomic emission spectroscopy - Laser diagnostics - Plasmas - Terahertz waves

Uncontrolled terms:1064 nm lasers - Air plasmas - Boltzmann plot - Electron number densities - Laser induced - Local thermodynamic equilibrium - Optically thin plasmas - Room temperature - Terahertz wave generation

Classification code:443.1 Atmospheric Properties - 711 Electromagnetic Waves - 744.1 Lasers, General - 744.9 Laser Applications - 801 Chemistry - 932.3 Plasma Physics

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 207>

 

Accession number:20122715188482

Title:Designing and selecting features for MR image segmentation

Authors:Yang, Meijuan (1); Yuan, Yuan (1); Li, Xuelong (1); Yan, Pingkun (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, Shaanxi, China; (2) Graduate University, Chinese Academy of Science, 19A Yuquanlu, Beijing, 100049, China

Corresponding author:Yang, M.

Source title:1st Asian Conference on Pattern Recognition, ACPR 2011

Abbreviated source title:Asian Conf. Pattern Recogn., ACPR

Monograph title:1st Asian Conference on Pattern Recognition, ACPR 2011

Issue date:2011

Publication year:2011

Pages:377-381

Article number:6166535

Language:English

ISBN-13:9781457701221

Document type:Conference article (CA)

Conference name:1st Asian Conference on Pattern Recognition, ACPR 2011

Conference date:November 28, 2011 - November 28, 2011

Conference location:Beijing, China

Conference code:90727

Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States

Abstract:Deformable models have obtained considerable success in medical image segmentation, due to its ability of capturing the shape variation of the target structure. Boundary feature is used to guide contour deformation, which plays an decisive part in deformable model based segmentation. However, it is still a challenging task to obtain a distinctive image feature to describe the boundaries, since boundaries are not necessarily in accordance with edges or ridges. Another challenge is to infer the shape for the given image appearance. In this paper, the anatomical structures from MR images are aimed to be segmented. First, a new normal vector feature profile (NVFP) is employed to describe the local image appearance of a contour point formed by a series of modified SIFT local descriptors along the normal direction of that point. Second, the shape of the target structure is inferred by matching two image appearances of the test image and learned image appearance. A new match function is designed to incorporate the new NVFP to deformable models. During the optimization procedure of the segmentation algorithm, the nearest neighbor approach is used to compute the displacement of each contour point to guide the global shape deformation. Experimental results on prostate and bladder MR images show that the proposed method has a better performance than the previous method. &copy; 2011 IEEE.

Number of references:9

Main heading:Image segmentation

Controlled terms:Deformation - Medical image processing - Pattern recognition - Urology

Uncontrolled terms:Anatomical structures - Contour points - Deformable models - Image appearance - Image features - Local descriptors - Match functions - Medical image segmentation - MR images - Nearest-neighbor approaches  - Normal direction - Normal vector - Optimization procedures - Prostate segmentation - Segmentation algorithms - Shape deformation - Shape variations - Target structure - Test images

Classification code:421 Strength of Building Materials; Mechanical Properties - 422 Strength of Building Materials; Test Equipment and Methods - 461.6 Medicine and Pharmacology - 716 Telecommunication; Radar, Radio and Television - 723.2 Data Processing and Image Processing

DOI:10.1109/ACPR.2011.6166535

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 208>

 

Accession number:20104813428530

Title:Distributed temperature sensing system based on Rayleigh scattering BOTDA

Authors:Cui, Qingsong (1); Pamukcu, Sibel (2); Lin, Aoxiang (3); Xiao, Wen (5); Herr, Douglas (6); Toulouse, Jean (7); Pervizpour, Mesut (8)

Author affiliation:(1) School of Instrument Science and Opto-electronics Engineering, Beihang University, Beijing 100191, China; (2) Department of Civil and Environmental Engineering, Lehigh University, Bethlehem, PA 18015, United States; (3) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics (XIOPM), Chinese Academy of Sciences (CAS), Xi'an 710119, China; (4) Center for Optical Technologies and Physics Department, Lehigh University, Bethlehem, PA 18015, United States; (5) School of Instrument Science and Opto-electronics Engineering, Beihang University, Beijing 100083, China; (6) Lepton Technologies Inc, Lancaster, PA 17601-3963, United States; (7) Department of Physics, Lehigh University, Bethlehem, PA 18015, United States; (8) Department of Civil Engineering, Widener University, Chester, PA,19013, United States

Corresponding author:Cui, Q.(qingsong.research@gmail.com)

Source title:IEEE Sensors Journal

Abbreviated source title:IEEE Sensors J.

Volume:11

Issue:2

Issue date:2011

Publication year:2011

Pages:399-403

Article number:5582137

Language:English

ISSN:1530437X

Document type:Journal article (JA)

Publisher:Institute of Electrical and Electronics Engineers Inc., 445 Hoes Lane / P.O. Box 1331, Piscataway, NJ 08855-1331, United States

Abstract:A distributed temperature sensor based on Rayleigh scattering Brillouin optical time domain analysis (Rayleigh-BOTDA) is proposed in this paper. The sensor uses Rayleigh backscattering effect of microwave modulated pulse base sidebands as probe wave and a high sensitive photon counting detector for Brillouin signal intensity detection. Compared with a conventional BOTDA system, the Rayleigh-BOTDA effectively suppresses polarization-induced signal fluctuation resulting in improved signal intensity. The experimental scheme presented is simplified by using a single laser with one-end access. The temperature accuracy of the new sensing system was demonstrated as 1 &deg;C on spatial resolution of 3 m. &copy; 2010 IEEE.

Number of references:15

Main heading:Microwave sensors

Controlled terms:Detectors - Fiber optic sensors - Frequency modulation - Light polarization - Photons - Rayleigh scattering - Scattering - Single mode fibers - Stimulated Brillouin scattering - Time domain analysis  - Ultrasonics

Uncontrolled terms:Brillouin - Brillouin optical time domain analysis - Distributed temperature sensing systems - Distributed temperature sensor - Experimental scheme - Induced signal - photon counting detector - Photon counting detectors - Probe waves - Rayleigh  - Rayleigh backscattering - Sensing systems - Signal intensities - Single lasers - Spatial resolution

Classification code:914 Safety Engineering - 753.1 Ultrasonic Waves - 741.1.2 Fiber Optics - 741.1 Light/Optics - 921 Mathematics - 732.2 Control Instrumentation - 717 Optical Communication - 716 Telecommunication; Radar, Radio and Television - 711 Electromagnetic Waves - 718 Telephone Systems and Related Technologies; Line Communications

DOI:10.1109/JSEN.2010.2066558

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 209>

 

Accession number:20114814561190

Title:Enhanced biologically inspired model for object recognition

Authors:Huang, Yongzhen (1); Huang, Kaiqi (1); Tao, Dacheng (2); Tan, Tieniu (1); Li, Xuelong (3)

Author affiliation:(1) National Laboratory of Pattern Recognition, Institute of Automation, Chinese Academy of Sciences, Beijing 100190, China; (2) Centre for Quantum Computation and Information Systems, University of Technology, Sydney, NSW 2007, Australia; (3) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China

Corresponding author:Huang, Y.(yzhuang@nlpr.ia.ac.cn)

Source title:IEEE Transactions on Systems, Man, and Cybernetics, Part B: Cybernetics

Abbreviated source title:IEEE Trans Syst Man Cybern Part B Cybern

Volume:41

Issue:6

Issue date:December 2011

Publication year:2011

Pages:1668-1680

Article number:5951795

Language:English

ISSN:10834419

CODEN:ITSCFI

Document type:Journal article (JA)

Publisher:Institute of Electrical and Electronics Engineers Inc., 445 Hoes Lane / P.O. Box 1331, Piscataway, NJ 08855-1331, United States

Abstract:The biologically inspired model (BIM) proposed by Serre presents a promising solution to object categorization. It emulates the process of object recognition in primates' visual cortex by constructing a set of scale- and position-tolerant features whose properties are similar to those of the cells along the ventral stream of visual cortex. However, BIM has potential to be further improved in two aspects: mismatch by dense input and randomly feature selection due to the feedforward framework. To solve or alleviate these limitations, we develop an enhanced BIM (EBIM) in terms of the following two aspects: 1) removing uninformative inputs by imposing sparsity constraints, 2) apply a feedback loop to middle level feature selection. Each aspect is motivated by relevant psychophysical research findings. To show the effectiveness of the EBIM, we apply it to object categorization and conduct empirical studies on four computer vision data sets. Experimental results demonstrate that the EBIM outperforms the BIM and is comparable to state-of-the-art approaches in terms of accuracy. Moreover, the new system is about 20 times faster than the BIM. &copy; 2006 IEEE.

Number of references:62

Main heading:Feature extraction

Controlled terms:Architectural design - Computer vision - Mammals - Object recognition

Uncontrolled terms:Biologically inspired models - Empirical studies - Feed-back loop - Feed-Forward - Object categorization - Psychophysical - Sparsity constraints - State-of-the-art approach - Ventral streams - Vision data  - Visual cortexes

Classification code:402 Buildings and Towers - 716 Telecommunication; Radar, Radio and Television - 723.5 Computer Applications - 821 Agricultural Equipment and Methods; Vegetation and Pest Control

DOI:10.1109/TSMCB.2011.2158418

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 210>

 

Accession number:20120214672462

Title:Analysis on spectrum recovery for nonuniform sampling interferogram

Authors:Jing, Juanjuan (1); Xiangli, Bin (3); L&#252;, Qunbo (3)

Author affiliation:(1) Key Laboratory of Spectral Imaging Technique, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, Shaanxi 710119, China; (2) Graduate University of Chinese Academy of Sciences, Beijing 100049, China; (3) Academy of Opto-Electronics, Chinese Academy of Sciences, Beijing 100094, China

Corresponding author:Jing, J.(jingjuanjuan@opt.ac.cn)

Source title:Guangxue Xuebao/Acta Optica Sinica

Abbreviated source title:Guangxue Xuebao

Volume:31

Issue:12

Issue date:December 2011

Publication year:2011

Article number:1211006

Language:Chinese

ISSN:02532239

CODEN:GUXUDC

Document type:Journal article (JA)

Publisher:Chinese Optical Society, P.O. Box 80, Xi'an, 710068, China

Abstract:Traditional fast Fourier transform (FFT) is only useful in uniform sampled interferogram. For nonuniform sampled interferogram, the spectrum recovered by FFT is often distorted when the aliasing is neglected. To solve the problem, nonuniform fast Fourier transform (NUFFT) method is proposed and some mature theories are formed. The NUFFT is applied to the spectrum recovery of interferogram, and the interferogram at different sampling frequency and different degree of nonuniform optical path difference (OPD) is analyzed and simulated. The results indicate that sampling frequency is the main factor that affect the recovery precision for undersampled interferogram condition, while the nonuniform degree of OPD is more affective for oversampled interferogram condition. In the application, data quantity, sampling frequency and the nonuniform degree of OPD must be considered comprehensively to acquire the final design parameter. To ensure the recovery precision, avoiding the undersampling of gotten interferogram is the basic criteria.

Number of references:17

Main heading:Interferometry

Controlled terms:Fast Fourier transforms - Recovery

Uncontrolled terms:Aliasing - Data quantity - Design parameters - Imaging spectroscopy - Interferograms - Non-uniform fast Fourier transforms - Nonuniform sampling - Optical path difference - Oversampled - Sampling frequencies  - Under-sampling

Classification code:531 Metallurgy and Metallography - 921.3 Mathematical Transformations - 941.4 Optical Variables Measurements

DOI:10.3788/AOS201131.1211006

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 211>

 

Accession number:20112714123802

Title:Enhancement of transmission efficiency of nanoplasmonic wavelength demultiplexer based on channel drop filters and reflection nanocavities

Authors:Lu, Hua (1); Liu, Xueming (1); Gong, Yongkang (1); Mao, Dong (1); Wang, Leiran (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China

Corresponding author:Liu, X.(liuxueming72@yahoo.com)

Source title:Optics Express

Abbreviated source title:Opt. Express

Volume:19

Issue:14

Issue date:July 4, 2011

Publication year:2011

Pages:12885-12890

Language:English

E-ISSN:10944087

Document type:Journal article (JA)

Publisher:Optical Society of America, 2010 Massachusetts Ave, NW, Washington, DC, DC 20036-1023, United States

Abstract:We propose and numerically investigate a novel kind of nanoscale plasmonic wavelength demultiplexing (WDM) structure based on channel drop filters in metal-insulator-metal waveguide with reflection nanocavities. By using finite-difference time-domain simulations, it is found that the transmission efficiency of the channel drop filter can be significantly enhanced by selecting the proper distance between the drop and reflection cavities. The result can be exactly analyzed by the temporal coupled-mode theory. According to this principle, a nanoscale triple-wavelength demultiplexer with high drop efficiencies is designed. The proposed structure can find more applications for the ultra-compact WDM systems in highly integrated optical circuits. &copy; 2011 Optical Society of America.

Number of references:35

Main heading:Drops

Controlled terms:Demultiplexing - Efficiency - Finite difference time domain method - Metal insulator boundaries - Nanostructured materials - Nanotechnology - Photonic integration technology

Uncontrolled terms:Channel drop filters - Coupled-mode theory - Demultiplexers - Drop efficiency - Finite difference time domain simulations - Highly integrated - Metal insulator metals - Nano scale - Nano-cavities - Plasmonic  - Structure-based - Transmission efficiency - Triple wavelengths - Wavelength demultiplexers - Wavelength demultiplexing - WDM systems

Classification code:913.1 Production Engineering - 761 Nanotechnology - 718 Telephone Systems and Related Technologies; Line Communications - 921 Mathematics - 717 Optical Communication - 714.2 Semiconductor Devices and Integrated Circuits - 443.1 Atmospheric Properties - 716 Telecommunication; Radar, Radio and Television

DOI:10.1364/OE.19.012885

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 212>

 

Accession number:20111513911278

Title:Fiber temperature sensor based on micro-mechanical membranes and optical interference structure

Authors:Liu, Yueming (1); Tian, Weijian (1); Hua, Jing (1)

Author affiliation:(1) College of Optical and Electronic Technology, China Jiliang University, Hangzhou 310018, China; (2) Xi'an Institute of Optics and Precision Mechanics, CAS, Xi'an 710068, China

Corresponding author:Liu, Y.(liuym@cjlu.edu.cn)

Source title:Journal of Physics: Conference Series

Abbreviated source title:J. Phys. Conf. Ser.

Volume:276

Issue:1

Monograph title:3rd International Photonics and OptoElectronics Meetings, POEM 2010

Issue date:2011

Publication year:2011

Article number:012151

Language:English

ISSN:17426588

E-ISSN:17426596

Document type:Conference article (CA)

Conference name:3rd International Photonics and OptoElectronics Meetings, POEM 2010

Conference date:November 2, 2010 - November 5, 2010

Conference location:Wuhan, China

Conference code:84489

Sponsor:Huazhong University of Science and Technology (HUST); China Hubei Provincial Science Technology Department (HBSTD); Wuhan East Lake National Innovation Model Park

Publisher:Institute of Physics Publishing, Temple Back, Bristol, BS1 6BE, United Kingdom

Abstract:A novel fiber temperature sensor is presented theoretically and experimentally in this paper. Its working principle is based on Optical Fabry-Perot interference structure that is formed between a polished optical fiber end and micro-mechanical Bi-layered membranes. When ambient temperature is varying, Bi-layered membranes will be deflected and the length of Fabry-Perot cavity will be changed correspondingly. By detecting the reflecting optical intensity from the Fabry-Perot cavity, the ambient temperature can be measured. Using finite element software ANSYS, the sensor structure was optimized based on optical Interference theory and Bi-layered membranes thermal expansion theory, and theoretical characteristics was simulated by computer software. In the end, using optical fiber 2&times;2 coupler and photo-electrical detector, the fabricated sample sensor was tested successfully by experiment that demonstrating above theoretical analysis and simulation results. This sensor has some favorable features, such as: micro size owing to its micro-mechanical structure, high sensitivity owing to its working Fabry-Perot interference cavity structure, and optical integration character by using optical fiber techniques.

Number of references:8

Main heading:Fabry-Perot interferometers

Controlled terms:Bismuth - Cavity resonators - Computer software - Fiber optic sensors - Fibers - Light interference - Optical fiber fabrication - Optical fibers - Temperature - Temperature sensors  - Thermal expansion

Uncontrolled terms:Ambient temperatures - Analysis and simulation - Fabry Perot interference - Fabry-Perot cavity - Fabry-Perot interference cavity - Finite element software - High sensitivity - Layered membranes - Micro-mechanical - Micromechanical structures  - Optical integration - Optical intensities - Optical interference - Sensor structures - Working principles

Classification code:817 Plastics and Other Polymers: Products and Applications - 812 Ceramics, Refractories and Glass - 741.1.2 Fiber Optics - 741.1 Light/Optics - 941.3 Optical Instruments - 732 Control Devices - 714.3 Waveguides - 641.1 Thermodynamics - 549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals - 723 Computer Software, Data Handling and Applications

DOI:10.1088/1742-6596/276/1/012151

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 213>

 

Accession number:20114314453166

Title:A precision carbon fiber hexapod for the installation of an optical telescope

Authors:Li, Chuang (1); Ren, Guorui (1); Wang, Wei (1); He, Tianbing (1); Lin, Liming (1); Yang, Wengang (1); Fan, Xuewu (1)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, CAS, Xi'an 710119, China

Corresponding author:Li, C.(lichuang@opt.ac.cn)

Source title:2011 2nd International Conference on Mechanic Automation and Control Engineering, MACE 2011 - Proceedings

Abbreviated source title:Int. Conf. Mech. Autom. Control Eng., MACE - Proc.

Monograph title:2011 2nd International Conference on Mechanic Automation and Control Engineering, MACE 2011 - Proceedings

Issue date:2011

Publication year:2011

Pages:977-980

Article number:5987095

Language:English

ISBN-13:9781424494392

Document type:Conference article (CA)

Conference name:2011 2nd International Conference on Mechanic Automation and Control Engineering, MACE 2011

Conference date:July 15, 2011 - July 17, 2011

Conference location:Inner Mongolia, China

Conference code:87002

Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States

Abstract:A carbon fiber hexapod was used to install an optical telescope on the payload instrument module of a satellite. In order to reduce distortion stresses, titanium alloy brackets with flexure sections were employed to connect the end fittings of the carbon fiber struts. The design, fabrication and assembling of the carbon fiber hexapod were discussed. The developed hexapod passed the qualified level vibration test. The test results show that the hexapod could reduce vibration response in high frequency. &copy; 2011 IEEE.

Number of references:10

Main heading:Carbon fibers

Controlled terms:Fibers - Frequency response - Mechanics - Optical telescopes - Precision engineering - Telescopes - Titanium - Titanium alloys

Uncontrolled terms:Distortion stress - Flexure section - Hexapod - High frequency - Payload instruments - Test results - Vibration response - Vibration test

Classification code:931.1 Mechanics - 817 Plastics and Other Polymers: Products and Applications - 812 Ceramics, Refractories and Glass - 804 Chemical Products Generally - 761 Nanotechnology - 741.3 Optical Devices and Systems - 731.1 Control Systems - 657 Space Physics - 542.3 Titanium and Alloys

DOI:10.1109/MACE.2011.5987095

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 214>

 

Accession number:20113614296280

Title:Application of carbon-carbon composite for load-carrying cylinder in lunar optical telescope

Authors:Li, Fu (1); Ruan, Ping (1); Li, Ting (1); Xu, Guang-Zhou (1); Lu, Di (1); Pan, Hai-Jun (1)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, China; (2) Graduate School, Chinese Academy of Science, Beijing, China

Corresponding author:Li, F.(lifu@opt.ac.cn)

Source title:Proceedings of SPIE - The International Society for Optical Engineering

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:8196

Monograph title:International Symposium on Photoelectronic Detection and Imaging 2011: Space Exploration Technologies and Applications

Issue date:2011

Publication year:2011

Article number:81961G

Language:English

ISSN:0277786X

CODEN:PSISDG

ISBN-13:9780819488374

Document type:Conference article (CA)

Conference name:International Symposium on Photoelectronic Detection and Imaging 2011: Space Exploration Technologies and Applications

Conference date:May 24, 2011 - May 26, 2011

Conference location:Beijing, China

Conference code:86296

Sponsor:Chinese Society of Astronautics (CAS)

Publisher:SPIE, P.O. Box 10, Bellingham, WA 98227-0010, United States

Abstract:The carbon-carbon composite (CCC) was applied in order to design and fabricate much more predominant lunar optical telescope (LOT). The fabricating technics of CCC and machining technics of load-carrying cylinder assembly are introduced. The density of CCC is 1.73g/cm³, and the coefficient of thermal expansion is 0.5&times;10^-6/&deg;C. The thermal adaptability of LOT was analyzed, the operating temperature of LOT will be improved to -20&deg;C&sim;+40&deg;C that the carbon-carbon cylinder is used. Finite element analysis of LOT with CCC cylinder was performed, and the results show that the first frequency of LOT is 185Hz. The machining and assembling of LOT have been performed. The vibration testing has been accomplished and the testing results are consistent with finite element analysis. The testing results show that load-carrying cylinder of CCC can stand the mechanical proof. All analysis and testing indicate that CCC can be competent for LOT. &copy; 2011 SPIE.

Number of references:5

Main heading:Carbon carbon composites

Controlled terms:Cylinders (shapes) - Finite element method - Load testing - Lunar missions - Machining - Optical telescopes - Pneumatic control equipment - Space research - Telescopes - Thermal expansion  - Vibration analysis

Uncontrolled terms:Analysis and testing - Load carrying - Load-carrying cylinder - Lunar optical telescope (LOT) - Mechanical proof - Operating temperature - Testing results - Vibration testing

Classification code:951 Materials Science - 657 Space Physics - 657.2 Extraterrestrial Physics and Stellar Phenomena - 732.1 Control Equipment - 741.3 Optical Devices and Systems - 921.6 Numerical Methods - 943.2 Mechanical Variables Measurements - 656.2 Space Research - 604.2 Machining Operations - 483.1 Soils and Soil Mechanics - 421 Strength of Building Materials; Mechanical Properties - 415.4 Structural Materials Other Than Metal, Plastics or Wood - 408.2 Structural Members and Shapes - 656.1 Space Flight

DOI:10.1117/12.900738

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 215>

 

Accession number:20114414464820

Title:Implementation of a LMS filter on FPGA employing extremeDSP and smart IP-core design

Authors:Wang, Yaqin (1); Liu, Xuebin (1); Hu, Bingliang (1)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Science, Xi'an, 710119, China

Corresponding author:Wang, Y.

Source title:Proceedings - IEEE 2011 10th International Conference on Electronic Measurement and Instruments, ICEMI 2011

Abbreviated source title:Proc. IEEE Int. Conf. Electron. Meas. Instruments, ICEMI

Volume:3

Monograph title:Proceedings - IEEE 2011 10th International Conference on Electronic Measurement and Instruments, ICEMI 2011

Issue date:2011

Publication year:2011

Pages:341-345

Article number:6037920

Language:English

ISBN-13:9781424481590

Document type:Conference article (CA)

Conference name:IEEE 2011 10th International Conference on Electronic Measurement and Instruments, ICEMI 2011

Conference date:August 16, 2011 - August 18, 2011

Conference location:Chengdu, China

Conference code:87064

Sponsor:IEEE Beijing Section; Chinese Institute of Electronics (CIE); National Natural Science Foundation of China; Computer Measurement Group

Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States

Abstract:Field Programmable Gate Arrays have become popular platform for digital signal processing, however, the conventional method, which is essentially writing a source code in a hardware description language to design a product on a FPGA, is time consuming and complicated. This restricts the implementation of complex signal processing algorithm on FPGA. In this paper, two fast design methods of algorithm implementation on FPGA were proposed: ExtremeDSP solution and Smart IP-Core technology. The AccelDSP Synthesis tool, as the main component of ExtremeDSP solution allows transferring a MATLAB floating point design into a hardware module that can be implemented on a Xilinx FPGA. Employing predefined cores can cut the design time and significantly reduce risk while having access to the best performing and lowest cost component available. Implementation of a LMS-adaptive filter employing these two methods has been achieved and the simulation results indicate that both of the two fast designs have high performance. &copy; 2011 IEEE.

Number of references:11

Main heading:Field programmable gate arrays (FPGA)

Controlled terms:Adaptive filters - Algorithms - Computer hardware description languages - Design - MATLAB - Signal processing

Uncontrolled terms:AccelDSP - Algorithm implementation - Complex signal processing - Conventional methods - Cost components - Design method - Design time - Floating-point designs - Hardware modules - IP core  - LMS - Main component - Popular platform - Simulation result - Source codes - Synthesis tool - Xilinx FPGA

Classification code:921 Mathematics - 731.1 Control Systems - 723 Computer Software, Data Handling and Applications - 722 Computer Systems and Equipment - 721.3 Computer Circuits - 716.1 Information Theory and Signal Processing - 408 Structural Design

DOI:10.1109/ICEMI.2011.6037920

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 216>

 

Accession number:20113214224383

Title:Rapid data acquisition in terahertz imaging

Authors:Xue, Bing (1); Fan, Wenhui (1); Liang, Yuqing (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China

Corresponding author:Fan, W.(fanwh@opt.ac.cn)

Source title:Chinese Optics Letters

Abbreviated source title:Chin. Opt. Lett.

Volume:9

Issue:SUPPL. 1

Issue date:June 2011

Publication year:2011

Pages:S10501

Language:English

ISSN:16717694

Document type:Journal article (JA)

Publisher:Science Press, 18,Shuangqing Street,Haidian, Beijing, 100085, China

Abstract:A new data-acquisition method based on the less movement of the time-delay stage is designed. The method can clearly reduce the time used in the entire imaging process in terahertz pulse imaging. According to the experimental result, the quality of imaging remains the same as the normal method or even better. The applicability and limitation of the method are also discussed. &copy; 2011 Chinese Optics Letters.

Number of references:6

Uncontrolled terms:Imaging process - Rapid data acquisition - Terahertz imaging - Terahertz pulse

DOI:10.3788/COL201109.S10501

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 217>

 

Accession number:20104913460311

Title:An adaptive VQ method used on interferential multi-spectral image lossless compression

Authors:Wen, Jia (1); Ma, Caiwen (1); Shui, Penglang (1)

Author affiliation:(1) Photoelectric Measurement and Control Technology Research Department, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, NO.17 Xinxi Road, Xi'an, Shaanxi, China; (2) Institute of Artificial Intelligence and Robotics, Xi'An Jiaotong University, Xi'an, Shaanxi, 710049, China

Corresponding author:Wen, J.(b09033@opt.cn)

Source title:Optics Communications

Abbreviated source title:Opt Commun

Volume:284

Issue:1

Issue date:January 1, 2011

Publication year:2011

Pages:64-73

Language:English

ISSN:00304018

CODEN:OPCOB8

Document type:Journal article (JA)

Publisher:Elsevier, P.O. Box 211, Amsterdam, 1000 AE, Netherlands

Abstract:In this paper, a high efficient adaptive LBG VQ (vector quantization) method is proposed, which is an improved version of the expansion LBG VQ method [1] (proposed in 2009)and exploits the shortest distance from a point to line segment. Moreover, the proposed method is used on the lossless compression of LASIS (Large Aperture Static Imaging Spectrometer) interferential multi-spectral images. Compared with the expansion LBG VQ method proposed in 2009, the experimental results showed that the adaptive LBG VQ method improved the compression performance obviously. And the experiment also showed that when using these LBG VQ methods above without Dual-Direction Prediction [2], the entropy generated by expansion LBG VQ method [1] sometimes will be larger than that generated by traditional LBG VQ method [3], and when using these LBG VQ methods above after Dual-Direction Prediction [2], CR (compression ratio) generated by expansion LBG VQ method [1] sometimes will be less than that generated by traditional LBG VQ method [3], while the entropy generated by the method proposed in this paper will be much less than that generated by either traditional LBG VQ method [3] or the expansion LBG VQ method [1], and CR generated by the method proposed in this paper will be much larger than that generated by either traditional LBG VQ method [3] or the expansion LBG VQ method [1]. &copy; 2010 Elsevier B.V. All rights reserved.

Number of references:10

Main heading:Data compression

Controlled terms:Compression ratio (machinery) - Entropy - Expansion - Image compression - Vector quantization

Uncontrolled terms:Adaptive VQ - Compression performance - Compression ratios - Large aperture - LASIS - LBG VQ - Lossless compression - Multispectral images - Point-to-line - Shortest distance  - Static imaging

Classification code:618.1 Compressors - 641.1 Thermodynamics - 716.1 Information Theory and Signal Processing - 741 Light, Optics and Optical Devices - 951 Materials Science

DOI:10.1016/j.optcom.2010.08.030

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 218>

 

Accession number:20110613648372

Title:Multi-sensor centralized fusion without measurement noise covariance by variational bayesian approximation

Authors:Gao, Xinbo (1); Chen, Jinguang (1); Tao, Dacheng (2); Li, Xuelong (3)

Author affiliation:(1) School of Electronic Engineering, Xidian University, Xian 710071 Shaanxi, China; (2) Centre for Quantum Computation and Intelligent Systems, Faculty of Engineering and Information Technology, University of Technology, Sydney Broadway, NSW 2007, Australia; (3) State Key Laboratory of Transient Optics and Photonics, Xian Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xian 710119 Shaanxi, China

Corresponding author:Gao, X.

Source title:IEEE Transactions on Aerospace and Electronic Systems

Abbreviated source title:IEEE Trans. Aerosp. Electron. Syst.

Volume:47

Issue:1

Issue date:January 2011

Publication year:2011

Pages:718-727

Article number:5705702

Language:English

ISSN:00189251

CODEN:IEARAX

Document type:Journal article (JA)

Publisher:Institute of Electrical and Electronics Engineers Inc., 445 Hoes Lane / P.O. Box 1331, Piscataway, NJ 08855-1331, United States

Abstract:The work presented here solves the multi-sensor centralized fusion problem in the linear Gaussian model without the measurement noise variance. We generalize the variational Bayesian approximation based adaptive Kalman filter (VB-AKF) from the single sensor filtering to a multi-sensor fusion system, and propose two new centralized fusion algorithms, i.e., VB-AKF-based augmented centralized fusion algorithm and VB-AKF-based sequential centralized fusion algorithm, to deal with the case that the measurement noise variance is unknown. The simulation results show the effectiveness of the proposed algorithms. &copy; 2011 IEEE.

Number of references:27

Main heading:Approximation algorithms

Controlled terms:Bayesian networks - Sensors - Spurious signal noise

Uncontrolled terms:Adaptive kalman filter - Centralized fusion - Linear Gaussian model - Measurement Noise - Multi sensor - Multi-sensor fusion system - Simulation result - Single sensor - Variational bayesian

Classification code:713 Electronic Circuits - 716 Telecommunication; Radar, Radio and Television - 801 Chemistry - 921 Mathematics - 921.4 Combinatorial Mathematics, Includes Graph Theory, Set Theory

DOI:10.1109/TAES.2011.5705702

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 219>

 

Accession number:20120614746032

Title:A new algorithm for auto-exposure based on the analogy histogram

Authors:Zhang, Haifeng (1); Cao, Jianzhong (1); Tang, Linao (1); Wang, Huawei (1)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, CAS, Xi'an, Shaanxi, China

Corresponding author:Zhang, H.(Zhanghf99@163.com)

Source title:Proceedings - 2011 7th International Conference on Computational Intelligence and Security, CIS 2011

Abbreviated source title:Proc. - Int. Conf. Comput. Intell. Secur., CIS

Monograph title:Proceedings - 2011 7th International Conference on Computational Intelligence and Security, CIS 2011

Issue date:2011

Publication year:2011

Pages:1053-1056

Article number:6128286

Language:English

ISBN-13:9780769545844

Document type:Conference article (CA)

Conference name:2011 7th International Conference on Computational Intelligence and Security, CIS 2011

Conference date:December 3, 2011 - December 4, 2011

Conference location:Sanya, Hainan, China

Conference code:88263

Sponsor:Xidian University; HIC; Beijing Normal University; Guangdong University of Technology

Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States

Abstract:A calculation of exposure time based on the light measurement often refer to errors in the deepness space detection duo to darkness background of deepness space and over hundreds of kilometers between the camera and the target. However, the use of based on an auto-exposure statistic and compensation method overcome those defects that mentioned before. Consequently, average gray level in the object area could be successfully adjusted to the excellent gray scale. Scientifically speaking, the application of auto-exposure method has benefits to promote the impact of exposure unknown size or light target in the darkness background. &copy; 2011 IEEE.

Number of references:6

Main heading:Graphic methods

Controlled terms:Artificial intelligence - Measurement errors

Uncontrolled terms:Analogy histogram - Auto-exposure - Compensation method - Exposure-time - Gray levels - Gray scale - Space detection

Classification code:723.4 Artificial Intelligence - 723.5 Computer Applications - 922 Statistical Methods

DOI:10.1109/CIS.2011.234

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 220>

 

Accession number:20120214672209

Title:Nonlinear characterization of silver nanocrystals incorporated tellurite glasses for fiber development

Authors:Zhou, Zhiguang (1); Tan, Wenjiang (2); Si, Jinhai (2); Zhan, Huan (1); He, Jianli (1); Lin, Aoxiang (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics (XIOPM), Chinese Academy of Sciences (CAS), Xi'an 710119, China; (2) Key Laboratory for Physical Electronics and Devices of the Ministry of Education, School of Electronics and Information Engineering, Xi'an Jiaotong University, Xi'an, 710049, China; (3) Graduate School of Chinese Academy of Sciences, Beijing 100049, China

Corresponding author:Lin, A.

Source title:Proceedings of SPIE - The International Society for Optical Engineering

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:8307

Monograph title:Passive Components and Fiber-Based Devices VIII

Issue date:2011

Publication year:2011

Article number:830721

Language:English

ISSN:0277786X

CODEN:PSISDG

ISBN-13:9780819489555

Document type:Conference article (CA)

Conference name:Passive Components and Fiber-Based Devices VIII

Conference date:November 14, 2011 - November 16, 2011

Conference location:Shanghai, China

Conference code:87987

Sponsor:The Society of Photo-Optical Instrumentation Engineers (SPIE); IEEE Photonics Society; Optical Society of America; Chinese Optical Society; China Institute of Communications

Publisher:SPIE, P.O. Box 10, Bellingham, WA 98227-0010, United States

Abstract:To develop high nonlinear optical fibers for all-optical switching applications, 7.5 wt% AgNO<inf>3</inf> was incorporated into tellurite glasses with composition of 75TeO<inf>2</inf>-20ZnO-5Na<inf>2</inf>CO<inf>3</inf> (TZN75) under precisely-controlled experimental conditions to form 7.5Ag-TZN75 glass. Surface Plasmon resonance absorption peak of Ag nanocrystals embedded in 7.5Ag-TZN75 glass was found to center at 552 nm. By degenerated four-wave mixing method, the non-resonant nonlinear refractive index, n<inf>2</inf>, of 7.5Ag-TZN75 glass was measured to be 7.54&times;10^-19 m ²&middotW^-1 at 1500 nm, about 3 times of the reference TZN75 glass without any dopant and 27 times of the silicate glasses and fibers, and the response time is about 1 picosecond. &copy; 2011 SPIE-OSA-IEEE.

Number of references:14

Main heading:Silver

Controlled terms:Four wave mixing - Glass - Nanocrystals - Optical fibers - Plasmons - Refractive index - Silicates - Sodium - Surface plasmon resonance - Tellurium compounds  - Textile fibers - Zinc oxide

Uncontrolled terms:All-optical switching - Degenerated four-wave mixing - Experimental conditions - Fiber development - Nonlinear characterization - Nonlinear optical fiber - Nonlinear refractive index - Nonresonant - Optical nonlinearity - Picoseconds  - Silicate glass - Silver nanocrystals - Surface plasmon resonance absorption - Surface plasmons - Tellurite glass

Classification code:819.2 Synthetic Fibers - 812.3 Glass - 812 Ceramics, Refractories and Glass - 804.2 Inorganic Compounds - 761 Nanotechnology - 741.1.2 Fiber Optics - 741.1 Light/Optics - 712.1 Semiconducting Materials - 549.1 Alkali Metals - 547.1 Precious Metals - 414 Masonry Materials

DOI:10.1117/12.904670

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 221>

 

Accession number:20113614296286

Title:Progress of NUV and FUV MCP-based photon-counting imaging detectors

Authors:Liu, Yong-An (1); Zhao, Bao-Sheng (1); Wei, Yong-Lin (1); Sai, Xiao-Feng (1); Yan, Qiu-Rong (1); Sheng, Li-Zhi (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China

Corresponding author:Liu, Y.-A.

Source title:Proceedings of SPIE - The International Society for Optical Engineering

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:8196

Monograph title:International Symposium on Photoelectronic Detection and Imaging 2011: Space Exploration Technologies and Applications

Issue date:2011

Publication year:2011

Article number:81961M

Language:English

ISSN:0277786X

CODEN:PSISDG

ISBN-13:9780819488374

Document type:Conference article (CA)

Conference name:International Symposium on Photoelectronic Detection and Imaging 2011: Space Exploration Technologies and Applications

Conference date:May 24, 2011 - May 26, 2011

Conference location:Beijing, China

Conference code:86296

Sponsor:Chinese Society of Astronautics (CAS)

Publisher:SPIE, P.O. Box 10, Bellingham, WA 98227-0010, United States

Abstract:In the World Space Observatory-Ultraviolet (WSO-UV) mission, the Long Slit Spectrograph (LSS) instrument will provide low resolution spectra in the range 102-320nm. Both the NUV (160-320nm) and the FUV (102-170nm) channels of LSS use microchannel plates (MCP) working in photon-counting modes as detectors. In this paper, the progress and parameters of NUV and FUV photon-counting imaging detectors were described. For the NUV detector, we developed the detector based on a sealed MCP-image intensifier which comprises input window, photocathode, MCP stack, Ge-layer and its ceramic substrate. To maximize the quantum efficiency, we adopted a Caesium Telluride (Cs<inf>2</inf>Te) photocathode, which was deposited on input window and mounted close to the MCP. For the FUV detector, because of the lower cut-off wavelength, there are no suitable window materials in this band and the open-faced design should be used to meet the requirements of the detection. Therefore, a Caesium Iodide (CsI) photocathode deposited on the input surface of the MCP was used to optimize detector efficiency. By using an existing wedge and strip anode (WSA), the imaging performance of the NUV and FUV detectors was tested respectively. Experimental results show that the quantum efficiency of Cs<inf>2</inf>Te is 12.1% (at 230nm), the spatial resolution of NUV and FUV detectors is better than 110&mu;m, the dark count rate of NUV and FUV detectors is about 10.5- and 2.3-counts/s*cm² respectively. &copy; 2011 SPIE.

Number of references:9

Main heading:Detectors

Controlled terms:Cesium - Cesium iodide - Efficiency - Germanium - Image storage tubes - Life support systems (spacecraft) - Observatories - Photocathodes - Photoelectricity - Photons  - Quantum efficiency - Space research

Uncontrolled terms:Ceramic substrates - Cutoff wavelengths - Dark count rate - Detector efficiency - Imaging detector - Imaging performance - Low resolution - MCP - Micro channel plate - Photon counting  - Photon-counting imaging - Photon-counting mode - Spatial resolution - Ultraviolet - Window materials - WSO-UV

Classification code:931.3 Atomic and Molecular Physics - 914 Safety Engineering - 913.1 Production Engineering - 804 Chemical Products Generally - 741.1 Light/Optics - 931.4 Quantum Theory; Quantum Mechanics - 714.1 Electron Tubes - 656.2 Space Research - 655.1 Spacecraft, General - 549.1 Alkali Metals - 443 Meteorology - 657 Space Physics

DOI:10.1117/12.900916

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 222>

 

Accession number:20113914361975

Title:Single-image super-resolution via sparse coding regression

Authors:Tang, Yi (1); Yuan, Yuan (1); Yan, Pingkun (1); Li, Xuelong (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Center for OPTical IMagery Analysis and Learning (OPTIMAL), Shaanxi, China

Corresponding author:Tang, Y.(tangyi@opt.ac.cn)

Source title:Proceedings - 6th International Conference on Image and Graphics, ICIG 2011

Abbreviated source title:Proc. - Int. Conf. Image Graph., ICIG

Monograph title:Proceedings - 6th International Conference on Image and Graphics, ICIG 2011

Issue date:2011

Publication year:2011

Pages:267-272

Article number:6005594

Language:English

ISBN-13:9780769545417

Document type:Conference article (CA)

Conference name:6th International Conference on Image and Graphics, ICIG 2011

Conference date:August 12, 2011 - August 15, 2011

Conference location:Hefei, Anhui, China

Conference code:86574

Sponsor:National Natural Science Foundation of China; Chinese Academy of Science; Microsoft Research Asia; Xian Institute of Optics and Precision Mechanics of CAS; Anhui Crearo Technology Co., Ltd

Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States

Abstract:In this paper, it has been shown that the sparse coding algorithm for single-image super-resolution is equivalent to a linear regression algorithm in the sparse coding space. Following the idea, the sparse coding algorithm are generalized by a novel L<inf>2</inf>-Boosting-based single-resolution super-resolution algorithm which focuses on the relationship between sparse codings corresponding to the low- and high-resolution image patches. The experimental results demonstrate the effectiveness of the proposed algorithm by comparing with other state-of-the- art algorithms. &copy; 2011 IEEE.

Number of references:20

Main heading:Image coding

Controlled terms:Algorithms - Optical resolving power - Regression analysis

Uncontrolled terms:Greedy regression - High resolution image - L<inf>2</inf>-boosting - Linear regression algorithms - Sparse coding - Super resolution - Super resolution algorithms

Classification code:723 Computer Software, Data Handling and Applications - 741 Light, Optics and Optical Devices - 741.1 Light/Optics - 921 Mathematics - 922.2 Mathematical Statistics

DOI:10.1109/ICIG.2011.63

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 223>

 

Accession number:20113114199270

Title:Development and military application of fiber optic rotary joint

Authors:Mi, Lei (1); Yao, Shengli (1); Sun, Chuandong (1); Sun, Bo (3); Zhang, Hongju (1)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics of Chinese Academy of Sciences, Xi'an 710119, China; (2) Graduate University of Chinese Academy of Science, Beijing 100039, China; (3) Femto Technology (Xi'an) Co., Ltd., Xi'an 710119, China

Corresponding author:Mi, L.(millay@126.com)

Source title:Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering

Abbreviated source title:Hongwai yu Jiguang Gongcheng Infrared Laser Eng.

Volume:40

Issue:6

Issue date:June 2011

Publication year:2011

Pages:1138-1142

Language:Chinese

ISSN:10072276

Document type:Journal article (JA)

Publisher:Chinese Society of Astronautics, P.O. Box 225-32, Tianjin, 300192, China

Abstract:The fiber optic rotary joint has been widely used in the field of national denfence and industrial design. The function of fiber optic rotary joint is to communicate crucial data from rotating platform to stationary platform. The specific use, working principle and production methods of single-channel and multi-channel fiber optic rotary joint were described. And foreign fiber optic rotary joint developments and technical specifications were introduced. The insertion loss of a fiber optic rotary joint depended on the mechanical misalignments of the fiber collimator. A single mode single-channel fiber optic rotary joint whose insert loss was below 2 dB was designed. Comparative experiment of temperature impact for fiber optic rotary joint was carried out. Test results were better than that of the foreign products. The characteristics of fiber optic rotary joint were analyzed. Finally, the applications of fiber optic rotary joint in national denfence have been introduced.

Number of references:7

Main heading:Fibers

Controlled terms:Fiber optics - Optical collimators - Photonics - Product design

Uncontrolled terms:Comparative experiments - Fiber collimators - Fiber optic rotary joint - Fiber optic rotary joints - Foreign fiber - Insert loss - Multi-channel - Production methods - Rotating platform - Single mode  - Single-channel - Stationary platforms - Technical specifications - Temperature impact - Test results - Working principles

Classification code:817 Plastics and Other Polymers: Products and Applications - 812 Ceramics, Refractories and Glass - 744 Lasers - 913.1 Production Engineering - 741.3 Optical Devices and Systems - 717 Optical Communication - 712 Electronic and Thermionic Materials - 741.1.2 Fiber Optics

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 224>

 

Accession number:20114114415123

Title:Research on underwater single-pixel imaging system

Authors:L&#252;, Pei (1); Zhou, Ren-Kui (1); He, Jun-Hua (1); Liu, Hai-Ying (3)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics of CAS, Xi'an 710119, China; (2) Graduate School of Chinese Academic of Sciences, Beijing 100039, China; (3) School of Telecommunication Engineering, Xi'an University of Electronic Science and Technology, Xi'an 710071, China

Corresponding author:Liu, H.-Y.(luupi@163.com)

Source title:Guangdianzi Jiguang/Journal of Optoelectronics Laser

Abbreviated source title:Guangdianzi Jiguang

Volume:22

Issue:9

Issue date:September 2011

Publication year:2011

Pages:1425-1430

Language:Chinese

ISSN:10050086

CODEN:GUJIE9

Document type:Journal article (JA)

Publisher:Board of Optronics Lasers, No. 47 Yang-Liu-Qing Ying-Jian Road, Tian-Jin City, 300380, China

Abstract:Owing to the complicated underwater imaging conditions which seriously restrict the development of underwater imaging, especially the remote underwater imaging, a novel underwater imaging framework based on the compressive sensing (CS) is proposed in this paper. The single-pixel camera based on CS is firstly applied to the underwater imaging field. Incorporating the range gate and laser pulse illumination technology, we design the architecture of the underwater CS single-pixel camera system, and construct the measurement matrix and the reconstruction algorithm for this system. By the theory analysis and simulated experiment, the image resolution and the imaging distance of our method are compared with those of range-gate imaging and other underwater imaging methods respectively. The results show that the proposed method not only increases the imaging distance but also improves the image quality.

Number of references:21

Main heading:Underwater imaging

Controlled terms:Cameras - Image quality - Image resolution - Imaging systems - Pixels - Signal reconstruction

Uncontrolled terms:Camera systems - Compressive sensing (CS) theory - Illumination technology - Imaging distances - Laser illumination - Measurement matrix - Range gate - Range gates - Reconstruction algorithms - Simulated experiments

Classification code:716.1 Information Theory and Signal Processing - 741 Light, Optics and Optical Devices - 742.2 Photographic Equipment

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 225>

 

Accession number:20115214631558

Title:A new method of baffle design

Authors:Mei, Chao (1); Zhou, Sizhong (1); Ma, Ming (1); Guo, Zhili (1); Zhao, Shimin (3)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Science, Xi'an, 710119, China; (2) Graduate University, Chinese Academy of Science, Beijing, 100039, China; (3) Taiyuan Satellite Launch Center, Taiyuan, 030027, China

Corresponding author:Mei, C.(s09026@opt.cn)

Source title:Procedia Engineering

Abbreviated source title:Procedia Eng.

Volume:15

Monograph title:2011 International Conference on Advanced in Control Engineering and Information Science, CEIS 2011

Issue date:2011

Publication year:2011

Pages:4516-4520

Language:English

ISSN:18777058

Document type:Conference article (CA)

Conference name:2011 International Conference on Advanced in Control Engineering and Information Science, CEIS 2011

Conference date:August 18, 2011 - August 19, 2011

Conference location:Dali, Yunnam, China

Conference code:87786

Publisher:Elsevier Ltd, Langford Lane, Kidlington, Oxford, OX5 1GB, United Kingdom

Abstract:Nowadays, as the development of the level of the land observation technology constantly improved, the demanded of the image quality are increasing rise. There are so many possibility factors which may influences of the image quality, especially in the inferred optical system, the main reason of them is stray light. The baffle is the main element in the observe system which can inhibit the stray lights that comes from out side of the system. The paper will show you an new idea in baffle design, we put the block aura in an angle which is not 90 degree in conventional. The design can keeps the stray lights out of the system or been greatly absorbed on the condition of low absorption rate of the baffle. We will show you the evidences of calculation, and gave you the basis of the design. &copy; 2011 Published by Elsevier Ltd.

Number of references:7

Main heading:Design

Controlled terms:Image quality - Information science - Optical systems - Quality control - Stray light

Uncontrolled terms:Absorption rates - Baffle - Block aura

Classification code:408 Structural Design - 741 Light, Optics and Optical Devices - 903 Information Science - 913.3 Quality Assurance and Control

DOI:10.1016/j.proeng.2011.08.848

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 226>

 

Accession number:20113214224378

Title:High-speed dynamic spectrum data acquisition system based on linear CCD

Authors:Zheng, Jinkun (1); Bai, Yonglin (1); Wang, Bo (1); Liu, Baiyu (1); Gou, Yongsheng (1); Liu, Hui (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (2) Graduate University of Chinese Academy of Sciences, Beijing 100049, China

Corresponding author:Zheng, J.(zhjink@126.com)

Source title:Chinese Optics Letters

Abbreviated source title:Chin. Opt. Lett.

Volume:9

Issue:SUPPL. 1

Issue date:June 2011

Publication year:2011

Pages:S10308

Language:English

ISSN:16717694

Document type:Journal article (JA)

Publisher:Science Press, 18,Shuangqing Street,Haidian, Beijing, 100085, China

Abstract:High-speed dynamic spectrum data of transient detection has become the major means of access to transient information. However, in terms of the characteristic of spectral data excessiveness and transience in the dynamic spectral detection system, the linear charge-coupled device (CCD) used in the system should have real-time-output and match the high-speed data storage equipment. Based on the transient spectrum characteristic, we introduce a high-speed dynamic spectrum data acquisition system with a high-linear array CCD. Through the field of programming gate array, the system provides an accurate driving clock for CCD and generates the control signals for analog-to-digital (A/D) conversion, storage, and transmission. Finally, the collected data by the peripheral component interconnect bus are summarized and filtered in the host computer. The results show that the CCD can stably work with a 40-MHz clock, and the frame scanning frequency can achieve 73 KHz. This design can remarkably complete the real-time measurement of the denotation transient temperature and achieve high-speed spectral information collection and storage with high accuracy and frame scanning frequency. It can be applied to other transient information acquisition. &copy; 2011 Chinese Optics Letters.

Number of references:11

Main heading:Data storage equipment

Controlled terms:Analog to digital conversion - Computer peripheral equipment - Speed

Uncontrolled terms:Analog-to-digital - Array CCD - Control signal - Data acquisition system - Dynamic spectrum - Gate arrays - High-speed - High-speed data - Host computers - Linear CCD  - Peripheral Component Interconnect bus - Real time measurements - Scanning frequency - Spectral data - Spectral detection - Spectral information - Transient detection - Transient information - Transient spectra - Transient temperature

Classification code:722 Computer Systems and Equipment - 931.1 Mechanics

DOI:10.3788/COL201109.S10308

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 227>

 

Accession number:20114414479980

Title:A novel metric based on MCA for image quality

Authors:He, Lihuo (1); Lu, Wen (1); Gao, Xinbo (1); Tao, Dacheng (2); Li, Xuelong (2)

Author affiliation:(1) VIPS Lab and Key Laboratory of Intelligent Perception and Image Understanding, Xidian University, Ministry of Education of China, Xi'an 710071, Shaanxi, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119 Shaanxi, China

Corresponding author:He, L.(lhhe@mail.xidian.edu.cn)

Source title:International Journal of Wavelets, Multiresolution and Information Processing

Abbreviated source title:Int. J. Wavelets Multiresolution Inf. Process.

Volume:9

Issue:5

Issue date:September 2011

Publication year:2011

Pages:743-757

Language:English

ISSN:02196913

Document type:Journal article (JA)

Publisher:World Scientific Publishing Co. Pte. Ltd, 5 Toh Tuck Link, Singapore, 596224, Singapore

Abstract:Considering that the Human Visual System (HVS) has different perceptual characteristics for different morphological components, a novel image quality metric is proposed by incorporating Morphological Component Analysis (MCA) and HVS, which is capable of assessing the image with different kinds of distortion. Firstly, reference and distorted images are decomposed into linearly combined texture and cartoon components by MCA respectively. Then these components are turned into perceptual features by Just Noticeable Difference (JND) which integrates masking features, luminance adaptation and Contrast Sensitive Function (CSF). Finally, the discrimination between reference and distorted images perceptual features is quantified using a pooling strategy before the final image quality is obtained. Experimental results demonstrate that the performance of the proposed prevails over some existing methods on LIVE database II. &copy; 2011 World Scientific Publishing Company.

Number of references:32

Main heading:Image quality

Uncontrolled terms:Component analysis - Contrast sensitive function - Distorted images - Human Visual System - Human visual systems - Image quality assessment - Image quality metrics - Just-noticeable difference - Perceptual feature

Classification code:741 Light, Optics and Optical Devices

DOI:10.1142/S0219691311004298

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 228>

 

Accession number:20121915002630

Title:Tracking of moving object based on optical flow detection

Authors:Chen, Zhiwen (1); Cao, Jianzhong (1); Tang, Yao (1); Tang, Linao (1)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, Shaanxi, 710119, China; (2) Graduate University, Chinese Academy of Sciences, Beijing,100049, China

Corresponding author:Chen, Z.(chenzhw@yeah.net)

Source title:Proceedings of 2011 International Conference on Computer Science and Network Technology, ICCSNT 2011

Abbreviated source title:Proc. Int. Conf. Comput. Sci. Netw. Technol., ICCSNT

Volume:2

Monograph title:Proceedings of 2011 International Conference on Computer Science and Network Technology, ICCSNT 2011

Issue date:2011

Publication year:2011

Pages:1096-1099

Article number:6182151

Language:English

ISBN-13:9781457715846

Document type:Conference article (CA)

Conference name:2011 International Conference on Computer Science and Network Technology, ICCSNT 2011

Conference date:December 24, 2011 - December 26, 2011

Conference location:Harbin, China

Conference code:89506

Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States

Abstract:Object tracking is one of the most important fields in computer vision and image processing community. In this paper, a novel method for tracking of moving object is proposed. We analyze many methods which are used to segment the Video Object (VO). Then we propose a way, which is based on optical flow, to track object by using the object contour. This algorithm achieves the effective object tracking in spatial position. The experiment result shows that moving object tracking is accurate, rapid and stable by using this algorithm. &copy; 2011 IEEE.

Number of references:11

Main heading:Optical flows

Controlled terms:Algorithms - Computer science - Computer vision - Motion compensation

Uncontrolled terms:Flow detection - Moving object tracking - Moving objects - Object contour - Object Tracking - Spatial positions - Video objects

Classification code:721 Computer Circuits and Logic Elements - 722 Computer Systems and Equipment - 723 Computer Software, Data Handling and Applications - 723.5 Computer Applications - 741 Light, Optics and Optical Devices - 921 Mathematics

DOI:10.1109/ICCSNT.2011.6182151

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 229>

 

Accession number:20111013715348

Title:Adaptively learning local shape statistics for prostate segmentation in ultrasound

Authors:Yan, Pingkun (1); Xu, Sheng (2); Turkbey, Baris (3); Kruecker, Jochen (2)

Author affiliation:(1) Center for OPTical IMagery Analysis and Learning (OPTIMAL), State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Xi'an 710119, Shaanxi, China; (2) Philips Research North America, Briarcliff Manor, NY 10510, United States; (3) Molecular Imaging Program, National Institutes of Health, National Cancer Institute, Bethesda, MD 20892, United States

Corresponding author:Yan, P.(pingkun.yan@opt.ac.cn)

Source title:IEEE Transactions on Biomedical Engineering

Abbreviated source title:IEEE Trans. Biomed. Eng.

Volume:58

Issue:3 PART 1

Issue date:March 2011

Publication year:2011

Pages:633-641

Language:English

ISSN:00189294

CODEN:IEBEAX

Document type:Journal article (JA)

Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States

Abstract:Automatic segmentation of the prostate from 2-D transrectal ultrasound (TRUS) is a highly desired tool in many clinical applications. However, it is a very challenging task, especially for segmenting the base and apex of the prostate due to the large shape variations in those areas compared to the midgland, which leads many existing segmentation methods to fail. To address the problem, this paper presents a novel TRUS video segmentation algorithm using both global population-based and patient-specific local shape statistics as shape constraint. By adaptively learning shape statistics in a local neighborhood during the segmentation process, the algorithm can effectively capture the patient-specific shape statistics and quickly adapt to the local shape changes in the base and apex areas. The learned shape statistics is then used as the shape constraint in a deformable model for TRUS video segmentation. The proposed method can robustly segment the entire gland of the prostate with significantly improved performance in the base and apex regions, compared to other previously reported methods. Our method was evaluated using 19 video sequences obtained from different patients and the average mean absolute distance error was 1.65 &plusmn; 0.47 mm. &copy; 2006 IEEE.

Number of references:27

Main heading:Object recognition

Controlled terms:Algorithms - Deformation - Image segmentation - Population statistics - Ultrasonics

Uncontrolled terms:Deformable models - prostate - segmentation - shape statistics - Transrectal ultrasound

Classification code:921 Mathematics - 753.1 Ultrasonic Waves - 723.2 Data Processing and Image Processing - 922.2 Mathematical Statistics - 723 Computer Software, Data Handling and Applications - 422 Strength of Building Materials; Test Equipment and Methods - 421 Strength of Building Materials; Mechanical Properties - 716 Telecommunication; Radar, Radio and Television

DOI:10.1109/TBME.2010.2094195

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 230>

 

Accession number:20113914366066

Title:High-power picosecond terahertz-wave generation in photonic crystal fiber via four-wave mixing

Authors:Wu, Huihui (1); Liu, Hongjun (1); Huang, Nan (1); Sun, Qibing (1); Wen, Jin (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Science (CAS), Xi'an, 710119, China; (2) Graduate University of CAS, Beijing, 100049, China

Corresponding author:Liu, H.(liuhongjun@opt.ac.cn)

Source title:Applied Optics

Abbreviated source title:Appl. Opt.

Volume:50

Issue:27

Issue date:September 20, 2011

Publication year:2011

Pages:5338-5343

Language:English

ISSN:1559128X

E-ISSN:15394522

CODEN:APOPAI

Document type:Journal article (JA)

Publisher:Optical Society of America, 2010 Massachusetts Ave, NW, Washington, DC, DC 20036-1023, United States

Abstract:We demonstrate picosecond terahertz (THz)-wave generation via four-wave mixing in an octagonal photonic crystal fiber (O-PCF). Perfect phase-matching is obtained at the pump wavelength of 1:55 &mu;m and a generation scheme is proposed. Using this method, THz waves can be generated in the frequency range of 7:07-7:74 THz. Moreover, peak power of 2:55W, average power of 1:53mW, and peak conversion efficiency of more than .66:65 dB at 7:42THz in a 6:25cm long fiber are realized with a pump peak power of 2kW. &copy; 2011 Optical Society of America.

Number of references:27

Main heading:Terahertz waves

Controlled terms:Conversion efficiency - Crystal whiskers - Four wave mixing - Photonic crystal fibers - Photonic crystals

Uncontrolled terms:Average power - Frequency ranges - High-power - Long fiber - Peak power - Picoseconds - Pump wavelength - Terahertz - Terahertz-wave generation - THz waves  - Wave generation

Classification code:525.5 Energy Conversion Issues - 711 Electromagnetic Waves - 711.1 Electromagnetic Waves in Different Media - 801.4 Physical Chemistry - 933.1 Crystalline Solids - 951 Materials Science

DOI:10.1364/AO.50.005338

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 231>

 

Accession number:20113214224391

Title:Mathematical representation and experimental generation of cylindrical vector beams

Authors:Duan, Tao (1); Jin, Pengcheng (1); Li, Chunfang (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academia of Sciences, Xi'an 710119, China

Corresponding author:Duan, T.(duantao@opt.ac.cn)

Source title:Chinese Optics Letters

Abbreviated source title:Chin. Opt. Lett.

Volume:9

Issue:SUPPL. 1

Issue date:June 2011

Publication year:2011

Pages:S10602

Language:English

ISSN:16717694

Document type:Journal article (JA)

Publisher:Science Press, 18,Shuangqing Street,Haidian, Beijing, 100085, China

Abstract:Cylindrical vector beams are described by the representation formalism of finite electromagnetic beams in free space. This is achieved by factorizing the field vector into a mapping matrix and a Jones-like vector. The vectorial property of a finite beam can be described by a degree of freedom of the mapping matrix that can be determined by the azimuthal angle of a fixed unit vector with respect to the wave vector. In addition, it is a simple and flexible experimental device for converting linearly polarized light beams into cylindrical vector beams. The radially or azimuthally polarized beam is easily converted into either one of these by varying the applied voltage. &copy; 2011 Chinese Optics Letters.

Number of references:29

Main heading:Vector spaces

Controlled terms:Vectors

Uncontrolled terms:Applied voltages - Azimuthal angle - Cylindrical vector beam - Degree of freedom - Electromagnetic beams - Finite beams - Free space - Linearly polarized light - Mapping matrix - Mathematical representations  - Polarized beams - Representation formalisms - Unit vectors - Wave vector

Classification code:921 Mathematics - 921.1 Algebra

DOI:10.3788/COL201109.S10602

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 232>

 

Accession number:20113314245071

Title:Auto-compensation of velocity-height ratio for Chang'E-2 satellite CCD stereo camera

Authors:Xue, Bin (1); Zhao, Baochang (1); Yang, Jianfeng (1); Gao, Wei (1); Qiao, Weidong (1); Ma, Xiaolong (1); Zhang, Bo (3); Liu, Jiahang (1); Zhao, Wei (1); Jing, Juanjuan (1)

Author affiliation:(1) Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (2) Key Laboratory of Spectral Imaging Technology, Chinese Academy of Sciences, Xi'an 710119, China; (3) State Key Laboratory of Transient Optics and Photonics, Chinese Academy of Sciences, Xi'an 710119, China; (4) Institute of Measurement and Communication, Beijing 100830, China

Corresponding author:Xue, B.(xuebin@opt.ac.cn)

Source title:Science China Technological Sciences

Abbreviated source title:Sci. China Technol. Sci.

Volume:54

Issue:9

Monograph title:Special Topic on Satellite Science (2237-2275)

Issue date:September 2011

Publication year:2011

Pages:2243-2246

Language:English

ISSN:16747321

E-ISSN:1862281X

Document type:Journal article (JA)

Publisher:Springer Verlag, Tiergartenstrasse 17, Heidelberg, D-69121, Germany

Abstract:The TDI-CCD imaging method using auto-compensation of velocity-height ratio (VHR) was applied to Chang'E-2 satellite CCD stereo camera. Factors that influence the image quality of the camera were discussed, among which the mismatch error in VHR was found to be the main cause. An auto-compensation scheme for VHR was developed. The validity and effectiveness were proved by the on-orbit high quality images. &copy; 2011 Science China Press and Springer-Verlag Berlin Heidelberg.

Number of references:11

Main heading:CCD cameras

Controlled terms:Image quality - Satellites

Uncontrolled terms:auto-compensation scheme - Chang'E-2 satellite - High quality images - Imaging method - Mismatch errors - On-orbit - Stereo cameras - TDI-CCD - velocity-height ratio

Classification code:655.2 Satellites - 714.2 Semiconductor Devices and Integrated Circuits - 741 Light, Optics and Optical Devices

DOI:10.1007/s11431-011-4517-7

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 233>

 

Accession number:20113614302210

Title:Propagation of coherent combination of flat-topped Gaussian beams in atmospheric turbulence

Authors:Ye, Shunliu (1); Wang, Xu'an (2); Zhu, Shaolan (2); Chen, Youjie (2)

Author affiliation:(1) China Nuclear Control System Engineering Co. Ltd., Beijing 100176, China; (2) Xi'an Institute of Optics and Precision Mechanics, Chinese Acad. of Sci., Xi'an 710119, China

Corresponding author:Ye, S.(yeshunliu@opt.ac.cn)

Source title:Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering

Abbreviated source title:Hongwai yu Jiguang Gongcheng Infrared Laser Eng.

Volume:40

Issue:7

Issue date:July 2011

Publication year:2011

Pages:1347-1351

Language:Chinese

ISSN:10072276

Document type:Journal article (JA)

Publisher:Chinese Society of Astronautics, P.O. Box 225-32, Tianjin, 300192, China

Abstract:Beam combination is that laser output beams overlap in the far field, so as to realize the high power, high beam quality of laser output, which has a broad prospect of application in remote sensing, tracking and far distance optical communication. The far field propagation properties and energy centrality of the coherent combination of one-dimensional flat-topped Gaussian beam array through atmospheric turbulent were studied in detail in this paper. The analytical expressions for intensity propagation, power in the bucket (PIB) were derived based on the generalized huygens-fresnel principle. It is shown that coherently combined beam will finally turn into Gaussian-like profile in the far field with increasing the distance of combination beam. The turbulence leads to degradation of the maximum intensity of combination beam, the larger the beam order is, the larger the decrement is. The energy centrality will decrease as the turbulence intensity increases, the beam order increases, the fill factor decreases and the elements number increases.

Number of references:14

Main heading:Gaussian beams

Controlled terms:Atmospheric thermodynamics - Atmospheric turbulence - Gaussian distribution - Gaussian noise (electronic) - Optical communication - Remote sensing

Uncontrolled terms:Analytical expressions - Beam combination - Beams combination - Coherent combination - Far field - Fill factor - Flat-topped gaussian beam - High beam quality - High-power - Huygens-Fresnel principle  - Laser output - Laser output beam - Maximum intensities - Power in the bucket - Turbulence intensity

Classification code:922.1 Probability Theory - 731.1 Control Systems - 717.1 Optical Communication Systems - 716 Telecommunication; Radar, Radio and Television - 713 Electronic Circuits - 711 Electromagnetic Waves - 443.1 Atmospheric Properties

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 234>

 

Accession number:20112814137360

Title:Research on endmember extraction algorithm based on spectral classification

Authors:Gao, Xiao-Hui (1); Xiangli, Bin (2); Wei, Ru-Yi (1); L&#252;, Qun-Bo (2); Wei, Jun-Xia (1)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics of Chinese Academy of Sciences, Xi'an 710119, China; (2) Academy of Opto-Electronics, Chinese Academy Sciences, Beijing 100190, China; (3) Graduate University of Chinese Academy Sciences, Beijing 100049, China

Corresponding author:Gao, X.-H.(gaoxhui@163.com)

Source title:Guang Pu Xue Yu Guang Pu Fen Xi/Spectroscopy and Spectral Analysis

Abbreviated source title:Guang Pu Xue Yu Guang Pu Fen Xi

Volume:31

Issue:7

Issue date:July 2011

Publication year:2011

Pages:1995-1998

Language:Chinese

ISSN:10000593

CODEN:GYGFED

Document type:Journal article (JA)

Publisher:Science Press, 18,Shuangqing Street,Haidian, Beijing, 100085, China

Abstract:Spectral unmixing is an important task for data processing of hyperspectral remote sensing, which is comprised of extracting the pure spectra (endmember) and calculating the abundance value of pure spectra. The most efficient endmember extracting algorithms (EEAs) is designed based on convexity geometry such as pure pixel index (PPI), N-finder algorithm (N-FINDR). Most EEAs choose pure spectra from all pixels of an image so that they have disadvantages like slow processing speed and poor precision. Partial algorithms need reducing the spectral dimension, which results in the difficulty in small target identification. This paper proposed an algorithm that classifies the hyperspetral image into some classes with homogeneous spectra and considers the mean spectra of a class as standard spectra for the class, then extracts pure spectrum from all standard spectra of classes. It reduces computation and the effect of system error, enhancing the speed and precision of endmember extraction. Using the least squares with constraints on spectral extraction and spectral unmixing, by controlling the band average value of the maximum spectral redundant allowance to control the number of endmembers, does not need to reduce the spectral dimension and predetermine the number of endmembers, so compared to N-finder algorithm, such algorithm is more rational.

Number of references:6

Main heading:Data mining

Controlled terms:Algorithms - Data handling - Image classification - Pixels - Remote sensing

Uncontrolled terms:Average values - Endmember extraction - Endmember extraction algorithms - Endmembers - Extracting algorithm - Hyperspectral remote sensing - Least Square - Processing speed - Pure pixel - Small targets  - Spectral classification - Spectral dimensions - Spectral redundancies - Spectral unmixing - System errors

Classification code:716 Telecommunication; Radar, Radio and Television - 723 Computer Software, Data Handling and Applications - 731.1 Control Systems - 921 Mathematics

DOI:10.3964/j.issn.1000-0593(2011)07-1995-04

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 235>

 

Accession number:20110813682553

Title:Ultrafast all-optical switching in nanoplasmonic waveguide with Kerr nonlinear resonator

Authors:Lu, Hua (1); Liu, Xueming (1); Wang, Leiran (1); Gong, Yongkang (1); Mao, Dong (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China

Corresponding author:Lu, H.

Source title:Optics Express

Abbreviated source title:Opt. Express

Volume:19

Issue:4

Issue date:February 14, 2011

Publication year:2011

Pages:2910-2915

Language:English

E-ISSN:10944087

Document type:Journal article (JA)

Publisher:Optical Society of America, 2010 Massachusetts Ave, NW, Washington, DC, DC 20036-1023, United States

Abstract:A novel ultrafast all-optical switching based on metal-insulatormetal nanoplasmonic waveguide with a Kerr nonlinear resonator is proposed and investigated numerically. With the finite-difference timedomain simulations, it is demonstrated that an obvious optical bistability of the signal light appears by varying the control-light intensity, and an excellent switching effect is achieved. This bistability originates from the intensity-dependent change induced in the dielectric constant of Kerr nonlinear material filled in the nanodisk resonator. It is found that the proposed all-optical switching exhibits femtosecond-scale feedback time. &copy; 2011 Optical Society of America.

Number of references:35

Main heading:Optical switches

Controlled terms:Crystal resonators - Feedback - Finite difference time domain method - Switching - Waveguides

Uncontrolled terms:All-optical switching - Bi-stability - Dielectric constants - Femtoseconds - Finite difference - Intensity-dependent - Kerr-nonlinear materials - Light intensity - Nanodisks - Nanoplasmonic waveguides  - Nonlinear resonators - Signal light - Switching effect - Time-domain simulations - Ultrafast all-optical switching

Classification code:713.5 Electronic Circuits Other Than Amplifiers, Oscillators, Modulators, Limiters, Discriminators or Mixers - 714.3 Waveguides - 721.1 Computer Theory, Includes Formal Logic, Automata Theory, Switching Theory, Programming Theory - 731.1 Control Systems - 741.3 Optical Devices and Systems - 921 Mathematics

DOI:10.1364/OE.19.002910

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 236>

 

Accession number:20112214020152

Title:Highly flexible all-optical metamaterial absorption switching assisted by Kerr-nonlinear effect

Authors:Gong, Yongkang (1); Li, Zhiyuan (2); Fu, Jinxin (2); Chen, Yuhui (2); Wang, Guoxi (1); Lu, Hua (1); Wang, Leirang (1); Liu, Xueming (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (2) Laboratory of Optical Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China

Corresponding author:Gong, Y.

Source title:Optics Express

Abbreviated source title:Opt. Express

Volume:19

Issue:11

Issue date:May 23, 2011

Publication year:2011

Pages:10193-10198

Language:English

E-ISSN:10944087

Document type:Journal article (JA)

Publisher:Optical Society of America, 2010 Massachusetts Ave, NW, Washington, DC, DC 20036-1023, United States

Abstract:A three-dimensional metamaterial nanostructure for realizing all-optical absorption switching is proposed and investigated. The structure consists of dual metallic layers for allowing near-perfect absorption due to electric and magnetic resonances, and a nonlinear Kerr-dielectric layer for actively manipulating the nanostructure absorption. The finite-difference time-domain simulation results demonstrate that, by adjusting the incident optical intensity, the metamaterial absorption can be flexibly tuned from near unity to zero. The all-optical absorption switching structure can find potential applications in actively integrated photonic circuits for thermal sensing, photo detecting, and optical imaging. &copy; 2011 Optical Society of America.

Number of references:26

Main heading:Optical Kerr effect

Controlled terms:Absorption - Finite difference time domain method - Light absorption - Magnetic resonance - Metamaterials - Nanostructures - Optical materials

Uncontrolled terms:All-optical - Finite difference time domain simulations - Integrated photonic circuit - Metallic layers - Optical imaging - Optical intensities - Potential applications - Thermal sensing

Classification code:933 Solid State Physics - 931.2 Physical Properties of Gases, Liquids and Solids - 921 Mathematics - 951 Materials Science - 761 Nanotechnology - 741.1 Light/Optics - 701.2 Magnetism: Basic Concepts and Phenomena - 741.3 Optical Devices and Systems

DOI:10.1364/OE.19.010193

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 237>

 

Accession number:20114914584035

Title:Relay lens design for an LCTF multi-spectral imager

Authors:Fu, Qiang (1); Huang, Min (3); Jing, Juanjuan (1); Xiangli, Bin (3)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, Shaanxi 710119, China; (2) Graduate University of Chinese Academy of Sciences, Beijing 100049, China; (3) Academy of Opto-Electronics, Chinese Academy of Sciences, Beijing 100094, China

Corresponding author:Fu, Q.(vorQ.Fu@hotmail.com)

Source title:Guangxue Xuebao/Acta Optica Sinica

Abbreviated source title:Guangxue Xuebao

Volume:31

Issue:10

Issue date:October 2011

Publication year:2011

Pages:1022002-1-1022002-6

Language:Chinese

ISSN:02532239

CODEN:GUXUDC

Document type:Journal article (JA)

Publisher:Chinese Optical Society, P.O. Box 80, Xi'an, 710068, China

Abstract:Liquid crystal tunable filter (LCTF) is a powerful dispersive element in multi-spectral imaging. Its physical size, however, exceeds the flange focal distance of general commercial off-the-shelf photographic lenses, which makes it difficult to combine with commercial lenses and cameras directly for multi-spectral imaging applications. A relay lens design working at unit magnification is proposed to accommodate the interface. The spectral range is from 400 nm to 720 nm, and the working F number is 4.5. With the symmetrical design strategy, coma, distortion and lateral color are canceled out automatically. The result satisfies the requirements of multi-spectral imaging. This system is compact and low-cost. It is applicable to the design of a portable multi-spectral imager based on the liquid crystal tunable filter.

Number of references:17

Main heading:Liquid crystals

Controlled terms:Cameras - Optical design - Optical instrument lenses

Uncontrolled terms:Aberration balance - Commercial off the shelves - Dispersive elements - F number - Focal distances - Liquid crystal tunable filter - Liquid crystal tunable filter (LCTF) - Multi-spectral - Multispectral imaging - Relay lens  - Spectral range - Symmetrical design

Classification code:741.1 Light/Optics - 741.3 Optical Devices and Systems - 742.2 Photographic Equipment - 804 Chemical Products Generally

DOI:10.3788/AOS201131.1022002

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 238>

 

Accession number:20113714325934

Title:Integrated solution for high resolution CCD camera imaging circuits

Authors:Bai, Zhe (1); Xu, Yanbing (3); Zhang, Boheng (1); Duan, Kailiang (1)

Author affiliation:(1) CAS, Xi'an Institute of Optics and Precision Mechanics, Xi'an 710119, China; (2) Graduate Academy of China Association of Science, Beijing 100039, China; (3) Institute of Physics Science and Technology, Sichuan University, Chengdu 610064, China

Corresponding author:Bai, Z.

Source title:Proceedings of SPIE - The International Society for Optical Engineering

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:8194

Monograph title:International Symposium on Photoelectronic Detection and Imaging 2011: Advances in Imaging Detectors and Applications

Issue date:2011

Publication year:2011

Article number:819432

Language:English

ISSN:0277786X

CODEN:PSISDG

ISBN-13:9780819488350

Document type:Conference article (CA)

Conference name:International Symposium on Photoelectronic Detection and Imaging 2011: Advances in Imaging Detectors and Applications

Conference date:May 24, 2011 - May 26, 2011

Conference location:Beijing, China

Conference code:86450

Sponsor:Chinese Society of Astronautics

Publisher:SPIE, P.O. Box 10, Bellingham, WA 98227-0010, United States

Abstract:In this paper,compared with the traditional CCD camera imaging circuits, a kind of integrated solution for CCD imaging circuits is put forward.The principle of the traditional CCD camera imaging circuits is described briefly, and the foundational functions are introduced. CCD imaging circuits are the most important parts of the CCD camera, and they are mainly made up of CCD driver circuits and CCD signal processing circuits. The CCD signal processing circuits mainly consist of timing generator, preamplifier circuits, CDS circuits, low-pass filter circuits, PGA circuits, ADC circuits, storage circuits, output interface circuits, and so on. The popular solution is that all the circuits are made with separate components.Complex circuit configuration, difficult debugging, uptight power dissipation are evident. However, it goes without saying that the integrated solutions which combine ADC with FPGA device are high integration, simple configuration and better agility. Finally, the integrated solution for CCD imaging circuits is illustrated, and the problems of the circuits are analyzed and summarized in detail. &copy; 2011 SPIE.

Number of references:8

Main heading:CCD cameras

Controlled terms:Detectors - Electric network analysis - Integration - Logic circuits - Low pass filters - Signal detection - Timing circuits

Uncontrolled terms:CCD drivers - CCD imaging - CdS - Circuit configurations - FPGA devices - High resolution - Integrated solutions - Output interface - Preamplifier circuit - Signal processing circuits  - Timing generators

Classification code:914 Safety Engineering - 721.3 Computer Circuits - 716.1 Information Theory and Signal Processing - 921.2 Calculus - 714.2 Semiconductor Devices and Integrated Circuits - 703.2 Electric Filters - 703.1.1 Electric Network Analysis - 713.4 Pulse Circuits

DOI:10.1117/12.901001

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 239>

 

Accession number:20120814781272

Title:HDR image synthesis based on multi-exposure color images

Authors:Wang, Hua (1); Cao, Jianzhong (1); Tang, Linao (1); Tang, Yao (1)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China

Corresponding author:Wang, H.(wangh0112@126.com)

Source title:Lecture Notes in Electrical Engineering

Abbreviated source title:Lect. Notes Electr. Eng.

Volume:132 LNEE

Issue:VOL. 1

Monograph title:Informatics in Control, Automation and Robotics

Issue date:2011

Publication year:2011

Pages:117-123

Language:English

ISSN:18761100

E-ISSN:18761119

ISBN-13:9783642258985

Document type:Conference article (CA)

Conference name:2011 3rd International Asia Conference on Informatics in Control, Automation and Robotics, CAR 2011

Conference date:December 24, 2011 - December 25, 2011

Conference location:Shenzhen, China

Conference code:88485

Publisher:Springer Verlag, Tiergartenstrasse 17, Heidelberg, D-69121, Germany

Abstract:In digital camera, it's difficult to exceed the dynamic range of 60~80dB because of the saturation current and background noise of CCD/CMOS image sensor in a single exposure image. In order to obtain more information and detail of a scene, we should extend its dynamic range, which was called HDR technology. Recent years, HDR imaging techniques have become the focus of much research because of their high theoretical and practical importance. By applying HDR techniques, the performance of different image processing and computer vision algorithms, information enhancement, and object and pattern recognition can also be improved. In this paper, a new tone reproduction algorithm is introduced, based on which may help to develop the hard-to-view or nonviewable features and details of color images. This method applies on multi-exposure images synthesis technique, where the red, green, and blue (RGB) color components of the pixels are separately handled. In the output, the corresponding (modified) color components are blended. As a result, a high quality HDR image is obtained, which contains almost the whole details and color information. &copy; 2011 Springer-Verlag.

Number of references:8

Main heading:Robotics

Controlled terms:Algorithms - Color - Color image processing - Image enhancement - Imaging techniques - Information science - Pattern recognition

Uncontrolled terms:Background noise - Color component - Color images - Color information - Dynamic range - HDR image - High dynamic range images - High quality - Image processing and computer vision - Multi-exposure images  - Practical importance - Saturation current - Single exposure - Tone reproduction

Classification code:921 Mathematics - 903 Information Science - 746 Imaging Techniques - 741.1 Light/Optics - 741 Light, Optics and Optical Devices - 731.5 Robotics - 723 Computer Software, Data Handling and Applications

DOI:10.1007/978-3-642-25899-2_16

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 240>

 

Accession number:20114614525026

Title:Movement analysis of nano-magnetic-particles in a magnetic fluid using laser speckle shearing technology

Authors:Wang, Xi-Jun (1); Wang, Ya-Jun (2)

Author affiliation:(1) Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China; (2) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710068, China

Corresponding author:Wang, X.-J.(xjwang@ciomp.ac.cn)

Source title:Guangxue Jingmi Gongcheng/Optics and Precision Engineering

Abbreviated source title:Guangxue Jingmi Gongcheng

Volume:19

Issue:7 SUPPL.

Issue date:July 2011

Publication year:2011

Pages:400-405

Language:Chinese

ISSN:1004924X

CODEN:GJGOF4

Document type:Journal article (JA)

Publisher:Chinese Academy of Sciences, 140 Renmin Street, Changchun, 130022, China

Abstract:In order to analyze the movement of nano-magnetic particles in the magnetic fluid, a double-beam speckle shearing interference device was designed. The working principles of the speckle shearing interference device was introduced and the movement of magnetic particles in nanometer dimensions was researched by the proposed device. A dynamic speckle time series image of the magnetic particles was obtained. On the basis of imaging dividing, the correlation coefficient of the image and lateral displacements of the magnetic particles were calculated. It shows that the resolution of lateral displacement has been 1 &mu;m. The results indicate that the double beam speckle shearing system is a more efficient way to study the movement of namo-magnetic particles.

Number of references:11

Main heading:Magnetic bubbles

Controlled terms:Image registration - Magnetic fluids - Nanomagnetics - Shearing - Speckle - Time series

Uncontrolled terms:Correlation coefficient - Double-beam - Dynamic speckle - Laser speckle - Lateral displacements - Magnetic particle - Movement analysis - Nanomagnetic particles - Nanometer dimensions - Shearing interference  - Shearing systems - Working principles

Classification code:604.1 Metal Cutting - 701.2 Magnetism: Basic Concepts and Phenomena - 708.4 Magnetic Materials - 723.2 Data Processing and Image Processing - 741.1 Light/Optics - 922.2 Mathematical Statistics

DOI:10.3788/OPE.20111913.0400

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 241>

 

Accession number:20113014175986

Title:High efficiency and high beam quality 3.467-&mu;m KTA extracavity optical parametric oscillator

Authors:Sun, Qibing (1); Liu, Hongjun (1); Huang, Nan (1); Ruan, Chi (1); Zhu, Shaolan (1); Zhao, Wei (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Science (CAS), Xi'an 710119, China; (2) Graduate University of CAS, Beijing 100049, China

Corresponding author:Liu, H.(liuhongjun@opt.ac.cn)

Source title:Microwave and Optical Technology Letters

Abbreviated source title:Microwave Opt Technol Lett

Volume:53

Issue:10

Issue date:October 2011

Publication year:2011

Pages:2204-2207

Language:English

ISSN:08952477

E-ISSN:10982760

CODEN:MOTLEO

Document type:Journal article (JA)

Publisher:John Wiley and Sons Inc., P.O.Box 18667, Newark, NJ 07191-8667, United States

Abstract:An efficient single resonant extracavity optical parametric oscillator is demonstrated based on a Type II noncritical phase matching KTA crystal.Under a pump power of 0.6 W and a pulse width of 13 ns, the average power of 86 mW at 3.467 &mu;m is obtained with the pulse width of 6 ns and repetition rate of 100 Hz, corresponding to a conversion efficiency as high as 14% from 1.064 to 3.467 &mu;m. The beam spatial profile for 3.467 &mu;m is near TEM<inf>00</inf> mode. The average power of 123 mW is also obtained with a multitransverse mode at the repetition rate of 200 Hz and an average power of 2.3 W of the pump laser. &copy; 2011 Wiley Periodicals, Inc.

Number of references:14

Main heading:Optical parametric oscillators

Controlled terms:Conversion efficiency - Efficiency - Optical pumping - Pulse repetition rate - Pumps

Uncontrolled terms:Average power - High beam quality - High conversion efficiency - High efficiency - KTA OPO - Midinfrared - Multi-transverse mode - Noncritical phase matching - Pulse width - Pump laser  - Pump power - Repetition rate - Spatial profiles - Type II

Classification code:913.1 Production Engineering - 744.9 Laser Applications - 744.1 Lasers, General - 741.3 Optical Devices and Systems - 741.1 Light/Optics - 618.2 Pumps - 525.5 Energy Conversion Issues

DOI:10.1002/mop.26247

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 242>

 

Accession number:20112614090811

Title:Characterization of vector diffraction-free beams

Authors:Wang, Ting-Ting (1); Yang, Shuang-Yan (1); Li, Chun-Fang (1)

Author affiliation:(1) Department of Physics, Shanghai University, Shanghai 200444, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China

Corresponding author:Li, C.-F.(cfli@shu.edu.cn)

Source title:Optics Letters

Abbreviated source title:Opt. Lett.

Volume:36

Issue:12

Issue date:June 15, 2011

Publication year:2011

Pages:2342-2344

Language:English

ISSN:01469592

E-ISSN:15394794

CODEN:OPLEDP

Document type:Journal article (JA)

Publisher:Optical Society of America, 2010 Massachusetts Avenue NW, Washington, DC 20036-1023, United States

Abstract:It is observed that a constant unit vector denoted by I is needed to characterize a complete orthonormal set of vector diffraction-free beams. The previously found diffraction-free beams are shown to be included as special cases. The I-dependence of the longitudinal component of diffraction-free beams is also discussed. &copy; 2011 Optical Society of America.

Number of references:14

Main heading:Diffraction

Uncontrolled terms:Diffraction free beams - Longitudinal components - Orthonormal - Unit vectors

Classification code:711.1 Electromagnetic Waves in Different Media

DOI:10.1364/OL.36.002342

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 243>

 

Accession number:20114014386298

Title:Athermalization design of a dual field-of-view IR optical system

Authors:Tan, Ting (1); Yang, Jianfeng (1); Zhou, Ke (1)

Author affiliation:(1) Key Laboratory of Spectrum Imaging Technology, Xi'an Institute of Optics and Precision Mechanics, CAS, Shaanxi Xi'an, 710119, China; (2) Graduate School of CAS, Beijing, 100039, China

Corresponding author:Tan, T.(tan_tan2011@163.com)

Source title:ICEOE 2011 - 2011 International Conference on Electronics and Optoelectronics, Proceedings

Abbreviated source title:ICEOE - Int. Conf. Electron. Optoelectron., Proc.

Volume:2

Monograph title:ICEOE 2011 - 2011 International Conference on Electronics and Optoelectronics, Proceedings

Issue date:2011

Publication year:2011

Pages:V279-V282

Article number:6013180

Language:English

ISBN-13:9781612842738

Document type:Conference article (CA)

Conference name:2011 International Conference on Electronics and Optoelectronics, ICEOE 2011

Conference date:July 29, 2011 - July 31, 2011

Conference location:Dalian, China

Conference code:86661

Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States

Abstract:Infrared imaging optical system are often asked to have good imaging performance, especially while surrounding temperature varies in a large range. Because of infrared material's sensitivity to temperature, athermalization should be taken into account in its design process in order to meet different user's demand. In this study we undertake the design and construction of a dual field-of-view lenses optimized for use in the infrared waveband(3.5&sim;5&mu;m), of which the F/# is 2, and it offers a dual EFL of 200/400 mm. Analysis show the system has fine and steady imaging performance within the range of -40 &sim;60&deg;C, and its MTF curves and spot diagrams show a good image quality , besides, its length and size are permitted, which is acceptable to a certain theodolite. &copy; 2011 IEEE.

Number of references:6

Main heading:Optical systems

Controlled terms:Design - Image quality - Optoelectronic devices - Thermography (imaging)

Uncontrolled terms:Athermalization - Cooled detectors - Design and construction - Design process - Field of views - Imaging optical systems - Imaging performance - Infrared material - Infrared optical system - Sensitivity to temperatures  - Spot diagram - Surrounding temperature - Wavebands

Classification code:408 Structural Design - 741 Light, Optics and Optical Devices - 741.3 Optical Devices and Systems - 742.1 Photography

DOI:10.1109/ICEOE.2011.6013180

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 244>

 

Accession number:20113614306990

Title:Biopsy needle detection in transrectal ultrasound

Authors:Ayvaci, Alper (1); Yan, Pingkun (2); Xu, Sheng (3); Soatto, Stefano (1); Kruecker, Jochen (3)

Author affiliation:(1) University of California, 405 Hilgard Ave, Los Angeles, CA 90095, United States; (2) Center for OPTical IMagery Analysis and Learning (OPTIMAL), State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, China; (3) Philips Research North America, 345 Scarborough Rd, Briarcliff Manor, NY 10510, United States

Corresponding author:Ayvaci, A.(ayvaci@cs.ucla.edu)

Source title:Computerized Medical Imaging and Graphics

Abbreviated source title:Comput. Med. Imaging Graph.

Volume:35

Issue:7-8

Issue date:October-December 2011

Publication year:2011

Pages:653-659

Language:English

ISSN:08956111

E-ISSN:18790771

CODEN:CMIGEY

Document type:Journal article (JA)

Publisher:Elsevier Ltd, Langford Lane, Kidlington, Oxford, OX5 1GB, United Kingdom

Abstract:Using the fusion of pre-operative MRI and real time intra-procedural transrectal ultrasound (TRUS) to guide prostate biopsy has been shown as a very promising approach to yield better clinical outcome than the routinely performed TRUS only guided biopsy. In several situations of the MRI/TRUS fusion guided biopsy, it is important to know the exact location of the deployed biopsy needle, which is imaged in the TRUS video. In this paper, we present a method to automatically detect and segment the biopsy needle in TRUS. To achieve this goal, we propose to combine information from multiple resources, including ultrasound probe stability, TRUS video background model, and the prior knowledge of needle orientation and position. The proposed algorithm was tested on TRUS video sequences which have in total more than 25,000 frames. The needle deployments were successfully detected and segmented in the sequences with high accuracy and low false-positive detection rate. &copy; 2011 Elsevier Ltd.

Number of references:13

Main heading:Ultrasonic applications

Controlled terms:Algorithms - Biopsy - Needles - Ultrasonics

Uncontrolled terms:Interventional - Needle detection - Prior knowledge - Prostate - Transrectal ultrasound

Classification code:461.6 Medicine and Pharmacology - 723 Computer Software, Data Handling and Applications - 753.1 Ultrasonic Waves - 753.3 Ultrasonic Applications - 819.6 Textile Mills, Machinery and Equipment - 921 Mathematics

DOI:10.1016/j.compmedimag.2011.03.005

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 245>

 

Accession number:20112514071849

Title:Optimization for limited angle tomography in medical image processing

Authors:Lu, Xiaoqiang (1); Sun, Yi (1); Yuan, Yuan (2)

Author affiliation:(1) School of Electronic and Information Engineering, Dalian University of Technology, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, Shaanxi, China

Corresponding author:Yuan, Y.(yuany@opt.ac.cn)

Source title:Pattern Recognition

Abbreviated source title:Pattern Recogn.

Volume:44

Issue:10-11

Issue date:October-November 2011

Publication year:2011

Pages:2427-2435

Language:English

ISSN:00313203

CODEN:PTNRA8

Document type:Journal article (JA)

Publisher:Elsevier Ltd, Langford Lane, Kidlington, Oxford, OX5 1GB, United Kingdom

Abstract:This paper aims to reduce the problems of incomplete data in computed tomography, which happens frequently in medical image process and analysis, e.g., when the high-density region of objects can only be penetrated by X-rays at a limited angular range. As the projection data are available only in an angular range, the incomplete data problem can be attributed to the limited angle problem, which is an ill-posed inverse problem. Image reconstruction based on total variation (TV) reduces the problem and gives better performance on edge-preserving reconstruction; however, the artificial parameter can only be determined through considerable experimentation. In this paper, an effective TV objective function is proposed to reduce the inverse problem in the limited angle tomography. This novel objective function provides a robust and effective reconstruction without any artificial parameter in the iterative processes, using the TV as a multiplicative constraint. The results demonstrate that this reconstruction strategy outperforms some previous ones. &copy; 2011 Published by Elsevier Ltd.

Number of references:39

Main heading:Inverse problems

Controlled terms:Computerized tomography - Image reconstruction - Imaging systems - Medical imaging - Medical problems - Tomography

Uncontrolled terms:Angular range - Artificial parameters - Computed Tomography - Edge preserving - High-density regions - ILL-posed inverse problem - Incomplete data - Iterative process - Limited-angle tomography - Medical Image Processing  - Medical images - Objective functions - Projection data - Total variation

Classification code:461.7 Health Care - 531 Metallurgy and Metallography - 741 Light, Optics and Optical Devices - 746 Imaging Techniques - 801 Chemistry - 921 Mathematics

DOI:10.1016/j.patcog.2010.12.016

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 246>

 

Accession number:20111613926464

Title:Simulation of transmitted light through atmosphere by Monte Carlo method

Authors:Wu, Zhen (1); He, Junfang (2); Wu, Dengke (2); L&#252;, Baida (1)

Author affiliation:(1) Institute of Laser Physics and Chemistry, Sichuan University, Chengdu 610064, China; (2) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China

Corresponding author:He, J.(amilyhjf@163.com)

Source title:Qiangjiguang Yu Lizishu/High Power Laser and Particle Beams

Abbreviated source title:Qiangjiguang Yu Lizishu

Volume:23

Issue:3

Issue date:March 2011

Publication year:2011

Pages:779-782

Language:Chinese

ISSN:10014322

CODEN:QYLIEL

Document type:Journal article (JA)

Publisher:Editorial Office of High Power Laser and Particle Beams, P.O. Box 919-805, Mianyang, 621900, China

Abstract:Different turbid media have different optical parameters such as absorption coefficient, scattering coefficient, anisotropic factor and refractive index. Monte Carlo method was used to simulate the influence of optical parameters on the transmitted photons for light transmitted through different atmospheres. The result shows that the temporal distribution of transmitted light has two peaks corresponding to ballistic photons and diffuse photons, respectively. Every optical parameter affects both the number and time range of ballistic photons, snake photons and diffuse photons. From the angle of statistical simulation, it is explained why atmosphere imaging is difficult when the refractive index of atmosphere is large.

Number of references:9

Main heading:Light transmission

Controlled terms:Anisotropic media - Ballistics - Light - Light refraction - Monte Carlo methods - Multiphoton processes - Optical variables control - Photons - Refractive index - Refractometers  - Transparency - Turbidity

Uncontrolled terms:Absorption coefficients - Anisotropic factor - Atmosphere - Diffuse light - Diffuse photons - Optical parameter - Scattering co-efficient - Snake light - Statistical simulation - Temporal distribution  - Time range - Transmitted light - Turbid media

Classification code:951 Materials Science - 941.4 Optical Variables Measurements - 941.3 Optical Instruments - 922.2 Mathematical Statistics - 741.3 Optical Devices and Systems - 741.1 Light/Optics - 404.1 Military Engineering

DOI:10.3788/HPLPB20112303.0779

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 247>

 

Accession number:20112714112244

Title:Induced current measurement in bridgewire EED through infrared optical fiber image bundle

Authors:Hu, Ya-Nan (1); Wang, Tao (1); Yin, Fei (1); Yang, Jin (1); Wang, Jing-Wei (1); Zhang, Li-Chen (1); Yin, Jing-Zhi (2)

Author affiliation:(1) State Key Laboratory of Transient Optics and Technology, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (2) State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun 130012, China; (3) Graduate University, Chinese Academy of Sciences, Beijing 100049, China

Corresponding author:Hu, Y.-N.(woshihuyanan@163.com)

Source title:Guangdianzi Jiguang/Journal of Optoelectronics Laser

Abbreviated source title:Guangdianzi Jiguang

Volume:22

Issue:5

Issue date:May 2011

Publication year:2011

Pages:733-735

Language:Chinese

ISSN:10050086

CODEN:GUJIE9

Document type:Journal article (JA)

Publisher:Board of Optronics Lasers, No. 47 Yang-Liu-Qing Ying-Jian Road, Tian-Jin City, 300380, China

Abstract:While the bridgewire electroexplosive device (EED) works in electromagnetic environment, conventional methods can introduce electromagnetic interference. A new method of measuring the induced current in EED is proposed in this article. The infrared optical fiber image bundle coupled with infrared CCD detector was used to detect induced current from long distance and under non-contact. At first, the thermal field images were acquired by infrared CCD detector. Then the value of weak induced current of corresponding bridgewire was further determined according to the relations between gray scale values and temperature, temperature and current. The experimental results show that the bridgewire current is accurately measured by this method. This method offers a new way to evaluate the electromagnetic effect of EED.

Number of references:10

Main heading:Induced currents

Controlled terms:Detectors - Electromagnetic pulse - Electromagnetism - Optical fibers

Uncontrolled terms:CCD detectors - Conventional methods - Electroexplosive devices - Electromagnetic environments - Gray scale - Image bundles - Long distances - Non-contact - Thermal field

Classification code:701 Electricity and Magnetism - 701.1 Electricity: Basic Concepts and Phenomena - 741.1.2 Fiber Optics - 914 Safety Engineering

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 248>

 

Accession number:20113614296277

Title:Development of low readout noise scientific CCD camera for lunar astronomical observation

Authors:Ge, Wei (1); Gan, Yu-Quan (1); Wang, Hong (1); Xu, Guang-Zhou (1)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Science, Xi'an 710119, China

Corresponding author:Ge, W.

Source title:Proceedings of SPIE - The International Society for Optical Engineering

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:8196

Monograph title:International Symposium on Photoelectronic Detection and Imaging 2011: Space Exploration Technologies and Applications

Issue date:2011

Publication year:2011

Article number:81961D

Language:English

ISSN:0277786X

CODEN:PSISDG

ISBN-13:9780819488374

Document type:Conference article (CA)

Conference name:International Symposium on Photoelectronic Detection and Imaging 2011: Space Exploration Technologies and Applications

Conference date:May 24, 2011 - May 26, 2011

Conference location:Beijing, China

Conference code:86296

Sponsor:Chinese Society of Astronautics (CAS)

Publisher:SPIE, P.O. Box 10, Bellingham, WA 98227-0010, United States

Abstract:High sensitivity and SNR are requested in lunar astronomical observation in order to get dark and feeble objects. Scientific CCD Cameras used in lunar astronomical observation usually have following characteristics: high quantum efficiency, wide spectral response, good photometric linearity and wide dynamic range. However, extremely low readout noise is usually a key indicator of the camera. A CCD camera, based on E2V's back-illuminated ultraviolet-enhanced scientific grade AIMO image sensor, has been designed for lunar astronomical observation. Four major kinds of electrical optimal design are presented in order to reduce the readout noise of the camera. The experiment result shows that: in the 200K pix/s of the pixel clock, the camera system gain is 1.83e-/ADU, and the readout noise is less than 6e-. &copy; 2011 SPIE.

Number of references:4

Main heading:CCD cameras

Controlled terms:Lunar missions - Space research

Uncontrolled terms:Astronomical observation - Back-illuminated - Camera systems - High quantum efficiency - High sensitivity - Key indicator - Low readout noise - Optimal design - Readout noise - Scientific CCD camera  - Spectral response - System gain - Wide dynamic range

Classification code:656.1 Space Flight - 656.2 Space Research - 714.2 Semiconductor Devices and Integrated Circuits

DOI:10.1117/12.900695

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 249>

 

Accession number:20112013989922

Title:Advance in interferogram data processing technique

Authors:Jing, Juan-Juan (1); Xiangli, Bin (2); L&#252;, Qun-Bo (2); Huang, Min (2); Zhou, Jin-Song (2)

Author affiliation:(1) Key Laboratory of Spectral Imaging Technique, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (2) Academy of Opto-Electronics, Chinese Academy of Sciences, Beijing 100190, China; (3) Graduate University of Chinese Academy of Sciences, Beijing 100049, China

Corresponding author:L&#252;, Q.-B.(laolv@opt.ac.cn)

Source title:Guang Pu Xue Yu Guang Pu Fen Xi/Spectroscopy and Spectral Analysis

Abbreviated source title:Guang Pu Xue Yu Guang Pu Fen Xi

Volume:31

Issue:4

Issue date:April 2011

Publication year:2011

Pages:865-870

Language:Chinese

ISSN:10000593

CODEN:GYGFED

Document type:Journal article (JA)

Publisher:Science Press, 18,Shuangqing Street,Haidian, Beijing, 100085, China

Abstract:Fourier transform spectrometry is a type of novel information obtaining technology, which integrated the functions of imaging and spectra, but the data that the instrument acquired is the interference data of the target, which is an intermediate data and couldn't be used directly, so data processing must be adopted for the successful application of the interferometric data. In the present paper, data processing techniques are divided into two classes: general-purpose and special-type. First, the advance in universal interferometric data processing technique is introduced, then the special-type interferometric data extracting method and data processing technique is illustrated according to the classification of Fourier transform spectroscopy. Finally, the trends of interferogram data processing technique are discussed.

Number of references:48

Main heading:Data handling

Controlled terms:Fourier transforms - Interferometry - Metadata - Modulation - Spectroscopy

Uncontrolled terms:Data processing techniques - Fourier transform spectrometry - Fourier Transform spectroscopy - Interference data - Interferograms - Interferometric data - Novel information - Spatially modulation - Spatio-temporally modulation - Spectral recovery  - Temporally modulation

Classification code:921.3 Mathematical Transformations - 801 Chemistry - 723.2 Data Processing and Image Processing - 941.4 Optical Variables Measurements - 723 Computer Software, Data Handling and Applications - 717 Optical Communication - 716 Telecommunication; Radar, Radio and Television - 718 Telephone Systems and Related Technologies; Line Communications

DOI:10.3964/j.issn.1000-0593(2011)04-0865-06

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 250>

 

Accession number:20114214445658

Title:Hadamard transform spectrometer mixed pixels' unmixing method

Authors:Yan, Peng (1); Hu, Bing-Liang (1); Liu, Xue-Bin (1); Sun, Wei (1); Li, Li-Bo (1); Feng, Yu-Tao (1); Liu, Yong-Zheng (1)

Author affiliation:(1) Laboratory of Spectral Imaging Technique, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China

Corresponding author:Yan, P.(summer_hehe@163.com)

Source title:Guang Pu Xue Yu Guang Pu Fen Xi/Spectroscopy and Spectral Analysis

Abbreviated source title:Guang Pu Xue Yu Guang Pu Fen Xi

Volume:31

Issue:10

Issue date:October 2011

Publication year:2011

Pages:2870-2873

Language:Chinese

ISSN:10000593

CODEN:GYGFED

Document type:Journal article (JA)

Publisher:Science Press, 18,Shuangqing Street,Haidian, Beijing, 100085, China

Abstract:Hadamard transform imaging spectrometer is a multi-channel digital transform spectrometer detection technology, this paper based on digital micromirror array device (DMD) of the Hadamard transform spectrometer working principle and instrument structure, obtained by the imaging sensor mixed pixel were analyzed, theory derived the solution of pixel aliasing hybrid method, simulation results show that the method is simple and effective to improve the accuracy of mixed pixel spectrum more than 10% recovery.

Number of references:8

Main heading:Mathematical transformations

Controlled terms:Pixels - Spectrometers - Spectrometry

Uncontrolled terms:Aliasing - Detection technology - Digital micromirror arrays - Digital transform spectrometers - DMD - Hadamad transform - Hadamard transform spectrometers - Hadamard transforms - Hybrid method - Imaging sensors  - Imaging spectrometer - Instrument structure - Mixed pixel - Multi-channel - Simulation result - Unmixing - Working principles

Classification code:723.5 Computer Applications - 801 Chemistry - 921.3 Mathematical Transformations

DOI:10.3964/j.issn.1000-0593(2011)10-2870-04

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 251>

 

Accession number:20120314700420

Title:Low-Repetition-Rate Ytterbium-Doped Fiber Laser Based on a CFBG from Large Anomalous to Large Normal Dispersion1

Authors:Li, X.H. (1); Wang, Y.S. (1); Zhang, W. (1); Zhao, W. (1); Hu, X.H. (1); Yang, Z. (1); Gao, C.X. (1); Wang, X.L. (1); Liu, X.L. (1); Shen, D.Y. (1); Li, C. (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (2) School of Science, Xi'an Jiaotong University, Xi'an 710049, China

Corresponding author:Li, X.H.

Source title:Laser Physics

Abbreviated source title:Laser Phys.

Volume:21

Issue:12

Issue date:December 2011

Publication year:2011

Pages:2112-2117

Language:English

ISSN:1054660X

E-ISSN:15556611

Document type:Journal article (JA)

Publisher:Maik Nauka-Interperiodica Publishing, Profsoyuznaya Ul 90, Moscow, 117997, Russia

Abstract:We report on the long-cavity ytterbium-doped fiber laser based on a chirped fiber Bragg grating (CFBG) to control the dispersion in the cavity. The proposed fiber lasers operating in large anomalous dispersion and large normal dispersion are intensively studied in this paper. To the best of our knowledge, this is the first time for us to give the dispersion map over such a wide range. The experimental results show that, for large anomalous dispersion, the state of soliton rains can be obtained. Nanosecond pulse is obtained in the large normal dispersion regime with spectral filter which is different from the operation mode without spectral filter. This study may pave the way to best apply the fiber laser in many fields. &copy; Pleiades Publishing, Ltd., 2011.

Number of references:34

Main heading:Dispersions

Controlled terms:Fiber Bragg gratings - Fiber lasers - Fibers - Solitons - Ytterbium

Uncontrolled terms:Anomalous dispersion - Chirped fiber Bragg grating - Dispersion map - Nanosecond pulse - Normal dispersion - Operation mode - Spectral filters - Ytterbium-doped fiber lasers

Classification code:951 Materials Science - 931.3 Atomic and Molecular Physics - 817 Plastics and Other Polymers: Products and Applications - 812 Ceramics, Refractories and Glass - 741.3 Optical Devices and Systems - 741.1.2 Fiber Optics - 547.2 Rare Earth Metals

DOI:10.1134/S1054660X11210110

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 252>

 

Accession number:20112514069706

Title:Improvement of the performance of the twisted-nematic liquid-crystal display as a phase modulator

Authors:Ma, Baiheng (1); Yao, Baoli (1); Li, Ze (1); Ye, Tong (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (2) Graduate School of the Chinese Academy of Sciences, Beijing 100039, China

Corresponding author:Yao, B.(yaobl@opt.ac.cn)

Source title:Applied Optics

Abbreviated source title:Appl. Opt.

Volume:50

Issue:17

Issue date:June 10, 2011

Publication year:2011

Pages:2588-2593

Language:English

ISSN:1559128X

E-ISSN:15394522

CODEN:APOPAI

Document type:Journal article (JA)

Publisher:Optical Society of America, 2010 Massachusetts Ave, NW, Washington, DC, DC 20036-1023, United States

Abstract:A twisted-nematic liquid-crystal display (TN-LCD) placed between two linear polarizers (P) generally produces coupled intensity and phase modulations. For the purpose of phase-only modulation, quarter- wave plates (QWPs) are often used in front of or behind the LCD. In this paper, we demonstrate theoretically and experimentally the QWPs' effect on the modulation properties of the TN-LCD based on the general Jones matrix descriptions for all the devices, which circumvents the inconvenience of the traditional method on the basis of the TN-LCD's internal parameters. We prove that the phase modulation depth of the TN-LCD can be further increased in the configuration of P<inf>1</inf>-QWP <inf>1</inf>-LCD-QWP<inf>2</inf>-P<inf>2</inf> with each component properly oriented, provided that the mean intensity transmission is decreased to a lower level. By observing the diffracted patterns of the Ronchi phase grating or blazed grating addressed onto the TN-LCD, we verify the validity of the proposed method. Improved reconstructed image quality from the kinoformloaded on the TN-LCD is obtained in this configuration. This approach is valuable when the TN-LCD is employed as a phase modulator, especially for the modern, thinner TN-LCD. &copy; 2011 Optical Society of America.

Number of references:21

Main heading:Liquid crystal displays

Controlled terms:Image quality - Liquids - Phase modulation

Uncontrolled terms:Blazed grating - Internal parameters - Jones matrix - Linear polarizer - Mean intensity - Modulation properties - Phase grating - Phase modulator - Phase-only modulation - Reconstructed image  - Twisted-nematic liquid-crystal displays - Waveplates

Classification code:716 Telecommunication; Radar, Radio and Television - 741 Light, Optics and Optical Devices - 741.3 Optical Devices and Systems - 931.2 Physical Properties of Gases, Liquids and Solids

DOI:10.1364/AO.50.002588

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 253>

 

Accession number:20113314243889

Title:Ytterbium doped all-fiber-path all-normal dispersion mode-locked laser based on semiconductor saturable mirror

Authors:Lian, F.Q. (1); Fan, Zh.W. (1); Wang, X.F. (1); Huang, Y.T. (1); Huang, K. (1); Ma, Y.F. (1); Niu, G. (1); Li, X.H. (4); Yu, J. (1)

Author affiliation:(1) Academy of Opto-Electronics, Chinese Academy of Sciences, Beijing, 100094, China; (2) Graduate University of Chinese Academy of Sciences, Beijing, 100049, China; (3) Beijing GK Laser Technology Co. Ltd., Beijing, 100192, China; (4) Xian Institute of Optics and Precision Mechanics, CAS, Xian, 710119, China

Corresponding author:Lian, F.Q.

Source title:Laser Physics

Abbreviated source title:Laser Phys.

Volume:21

Issue:6

Issue date:June 2011

Publication year:2011

Pages:1103-1107

Language:English

ISSN:1054660X

E-ISSN:15556611

Document type:Journal article (JA)

Publisher:Maik Nauka-Interperiodica Publishing, Profsoyuznaya Ul 90, Moscow, 117997, Russia

Abstract:In this paper, we describe a compact all-fiber-path picosecond pulse based on Ytterbium doped fiber oscillator. A home-made novel SESAM mounted on fiber is reported, by which stable mode locking is obtained. The SESAM possesses the low saturation flux 20 &mu;J/cm² (versus prior low saturation flux 32 &mu;J/cm²), which effectively reduces the pump power threshold of mode locking. The fiber laser generates 15 ps pulse trains without a dispersive delay line or anomalous dispersion in the cavity. Mode locking pulse with 30 MHz basic repetition-rate was produced, with 10-30 mW scale average output power at 1064 nm. Through 60 h of uninterrupted laser operating, mode locking is steady as ever. &copy; Pleiades Publishing, Ltd. 2011.

Number of references:30

Main heading:Mode-locked fiber lasers

Controlled terms:Dispersions - Electric delay lines - Fiber lasers - Fibers - Laser mode locking - Mirrors - Pulse generators - Pulse repetition rate - Semiconductor lasers - Ultrashort pulses  - Ytterbium

Uncontrolled terms:1064 nm - Anomalous dispersion - Dispersive delay lines - Mode-locked laser - Output power - Pico-second pulse - Pulse train - Pump power - Saturation flux - Semiconductor saturable mirrors  - Stable mode locking - Ytterbium doped fibers - Ytterbium-doped

Classification code:951 Materials Science - 817 Plastics and Other Polymers: Products and Applications - 812 Ceramics, Refractories and Glass - 744 Lasers - 741.3 Optical Devices and Systems - 741.1.2 Fiber Optics - 713.5 Electronic Circuits Other Than Amplifiers, Oscillators, Modulators, Limiters, Discriminators or Mixers - 713.4 Pulse Circuits - 547.2 Rare Earth Metals

DOI:10.1134/S1054660X11110181

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 254>

 

Accession number:20114614524957

Title:Preliminary study of zinc ion sensor with the function of imaging

Authors:Wang, Jian (1); Wang, Li-Li (2)

Author affiliation:(1) Department of Physics and Chemistry, Henan Polytechnic University, Jiaozuo 454000, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China

Corresponding author:Wang, J.(jianwang@hpu.edu.cn)

Source title:Guang Pu Xue Yu Guang Pu Fen Xi/Spectroscopy and Spectral Analysis

Abbreviated source title:Guang Pu Xue Yu Guang Pu Fen Xi

Volume:31

Issue:11

Issue date:November 2011

Publication year:2011

Pages:3145-3148

Language:Chinese

ISSN:10000593

CODEN:GYGFED

Document type:Journal article (JA)

Publisher:Science Press, 18,Shuangqing Street,Haidian, Beijing, 100085, China

Abstract:A zinc ion fluorescence sensor with imaging was fabricated by using 1-(2-Pyridylazo)-2-naphthol and fluorescent reagent of rhodamine B together as the indication which was immobilized on an tip of gradient index lens by base catalyzed sol-gel method. Combined with improved metallographic microscope and laser, the measurement of zinc ion concentration and the view of sample morphology could be ealized simultaneously by this system. The sensor has the linear range of zinc ion concentration from 0.1 to 1 mmol &middot L^-1. Moreover, it has the capabilities of imaging with the whole system's resolution of 18.73 lp &middot mm^-1. This sensor with the function of imaging has the potential applications in biosensing.

Number of references:14

Main heading:Zinc

Controlled terms:Fluorescence - Imaging techniques - Ions - Phenols - Sensors - Sol-gel process

Uncontrolled terms:1-(2-Pyridylazo)-2-naphthol - Base catalyzed - Biosensing - Fiber sensing - Fluorescence sensors - Fluorescent reagent - Gradient index lens - Linear range - Metallographic microscope - Potential applications  - Rhodamine B - Sample morphology - Zinc ions

Classification code:813.1 Coating Techniques - 804.1 Organic Compounds - 801 Chemistry - 746 Imaging Techniques - 741.1 Light/Optics - 741 Light, Optics and Optical Devices - 546.3 Zinc and Alloys

DOI:10.3964/j.issn.1000-0593 (2011) 11-3145-05

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 255>

 

Accession number:20113114199058

Title:Study on characteristic of Yb³⁺-gain guided index-antiguided fiber

Authors:Li, Weinan (1); Lu, Min (1); Peng, Bo (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Procession Mechanics, Chinese Acad. of Sci., Xi'an, Shaanxi 710119, China

Corresponding author:Li, W.(liweinan@opt.ac.cn)

Source title:Guangxue Xuebao/Acta Optica Sinica

Abbreviated source title:Guangxue Xuebao

Volume:31

Issue:SUPPL.1

Issue date:June 2011

Publication year:2011

Article number:s100109

Language:Chinese

ISSN:02532239

CODEN:GUXUDC

Document type:Journal article (JA)

Publisher:Chinese Optical Society, P.O. Box 80, Xi'an, 710068, China

Abstract:The core glass and cladding glass of gain guided index-antiguided (GGIAG) fiber doped with Yb³⁺ are prepared and Yb³⁺GGIAG fiber with core diameter of 120 &mu;m, inner cladding diameter 220 &mu;m and outer cladding diameter 260 &mu;m is drawn by the rod-in tube technique. Yb³⁺GGIAG fiber has a lower core refractive index than the surrounding cladding's, &Delta;n=-0.00094. The beam quality factors in both horizontal and vertical directions are observed, M<inf>x</inf>²&asyum;2.724 and M<inf>y</inf>²&asyum;2.642 when signal light (at 1040 nm) with single mode is propagating in Yb³⁺GGIAG fiber with different length, which indicates single mode approximation behavior of Yb³⁺GGIAG fiber. The mode field diameter of Yb³⁺GGIAG is calculated to be more than 150 &mu;m.

Number of references:10

Main heading:Fibers

Controlled terms:Cladding (coating) - Glass - Refractive index - Ytterbium

Uncontrolled terms:Beam quality factor - Cladding diameters - Cladding glass - Core diameters - Gain guided - Inner cladding - Mode field diameter - Signal light - Single mode - Single-mode approximation  - Vertical direction

Classification code:535.1 Metal Rolling - 547.2 Rare Earth Metals - 741.1 Light/Optics - 812 Ceramics, Refractories and Glass - 812.3 Glass - 817 Plastics and Other Polymers: Products and Applications

DOI:10.3788/AOS201131.s100109

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 256>

 

Accession number:20113714320208

Title:Micro/Nano displacement measurement using sub-pixel DSCM

Authors:Li, Xin-Zhong (1); Tai, Yu-Ping (2); Nie, Zhao-Gang (3); Zhang, Li-Ping (1); Wang, Ya-Jun (4)

Author affiliation:(1) School of Physics and Engineering, Henan University of Science and Technology, Luoyang, 471003, China; (2) School of Chemical Engineering and Pharmaceutics, Henan University of Science and Technology, Luoyang, 471003, China; (3) College Department of Applied Physics and Chemistry, Institute for Laser Science, University of Electro-Communications, Tokyo 182-8585, Japan; (4) Network Center, Xi'an Institute of Optics and Precision Mechanics, Chinese Academic of Sciences, Xi'an, 710119, China

Corresponding author:Li, X.-Z.

Source title:Proceedings of SPIE - The International Society for Optical Engineering

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:8192

Monograph title:International Symposium on Photoelectronic Detection and Imaging 2011: Laser Sensing and Imaging; and Biological and Medical Applications of Photonics Sensing and Imaging

Issue date:2011

Publication year:2011

Article number:819213

Language:English

ISSN:0277786X

CODEN:PSISDG

ISBN-13:9780819488336

Document type:Conference article (CA)

Conference name:International Symposium on Photoelectronic Detection and Imaging 2011: Laser Sensing and Imaging; and Biological and Medical Applications of Photonics Sensing and Imaging

Conference date:May 24, 2011 - May 26, 2011

Conference location:Beijing, China

Conference code:86437

Sponsor:Chinese Society of Astronautics

Publisher:SPIE, P.O. Box 10, Bellingham, WA 98227-0010, United States

Abstract:A selection method of subset size in sub-pixel displacement registration is proposed. The algorithm principle of interpolation, fitting of distribution of the correlation coefficients and gradient-based methods are introduced. Using computer-simulated speckle images, their precision and efficiency depending on the subset size are studied. The optimal method and subset size are presented in various measurement ranges, which offer measuring bases for sub-pixel in DSCM. &copy; 2011 SPIE.

Number of references:10

Main heading:Pixels

Controlled terms:Medical applications - Set theory - Speckle

Uncontrolled terms:Correlation coefficient - Digital speckle correlation method - Displacement measurements - Gradient-based method - Measurement range - Micro/Nano displacement - Optimal methods - Selection methods - Speckle images - Sub pixels  - Sub-pixel displacements - Subset size

Classification code:461.1 Biomedical Engineering - 723.5 Computer Applications - 741.1 Light/Optics - 921.4 Combinatorial Mathematics, Includes Graph Theory, Set Theory

DOI:10.1117/12.899580

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 257>

 

Accession number:20114814572243

Title:Decoding algorithms of single photon counting imager based on two-dimensional Vernier anodes

Authors:Yang, Hao (1); Zhao, Baosheng (1); Yan, Qiurong (1); Liu, Yongan (1); Hu, Huijun (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (2) Graduate University of Chinese Academy of Sciences, Beijing 100049, China

Corresponding author:Yang, H.(yxq8519@tom.com)

Source title:Science China: Physics, Mechanics and Astronomy

Abbreviated source title:SCI. CHINA Phys. Mech. Astron.

Volume:54

Issue:11

Issue date:November 2011

Publication year:2011

Pages:1943-1947

Language:English

ISSN:16747348

Document type:Journal article (JA)

Publisher:Science in China Press, 16 Donghuangchenggen North Street, Beijing, PR 100717, China

Abstract:The decoding algorithms of two-dimensional Vernier anodes are deduced theoretically. The precision of decoding and uniqueness of encoding are proved. The influencing factors of detection sensitivity and spatial resolution are discussed. The single photon imaging system is constructed, and the two-dimensional Vernier collector is fabricated. The image of the ultra-weak emission source is reconstructed. The spatial resolution of the system is about 100 &mu;m. &copy; 2011 Science China Press and Springer-Verlag Berlin Heidelberg.

Number of references:16

Main heading:Decoding

Controlled terms:Algorithms - Anodes - Image resolution - Particle beams - Photons - Two dimensional

Uncontrolled terms:Decoding algorithm - Detection sensitivity - Emission sources - Influencing factor - Single photon counting - Single-photon imaging - Spatial resolution - Vernier collector

Classification code:932.1 High Energy Physics - 921 Mathematics - 802.1 Chemical Plants and Equipment - 742 Cameras and Photography - 741.1 Light/Optics - 741 Light, Optics and Optical Devices - 723 Computer Software, Data Handling and Applications

DOI:10.1007/s11433-011-4490-y

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 258>

 

Accession number:20112114007172

Title:The multi-spectra classification algorithm based on K-means clustering and spectral angle cosine

Authors:Wei, Jun-Xia (1); Xiangli, Bin (2); Gao, Xiao-Hui (1); Duan, Xiao-Feng (1)

Author affiliation:(1) Key Laboratory of Spectral Imaging Technology of Chinese Academy of Sciences, Laboratory of Spectral Imaging Technology, Xi'an Institute of Optics and Precision Mechanics, Xi'an 710119, China; (2) Academy of Opto-Electronics, Chinese Academy of Sciences, Beijing 100190, China; (3) Graduate University of Chinese Academy of Sciences, Beijing 100049, China

Corresponding author:Xiangli, B.(xiangli@opt.cn)

Source title:Guang Pu Xue Yu Guang Pu Fen Xi/Spectroscopy and Spectral Analysis

Abbreviated source title:Guang Pu Xue Yu Guang Pu Fen Xi

Volume:31

Issue:5

Issue date:May 2011

Publication year:2011

Pages:1357-1360

Language:Chinese

ISSN:10000593

CODEN:GYGFED

Document type:Journal article (JA)

Publisher:Science Press, 18,Shuangqing Street,Haidian, Beijing, 100085, China

Abstract:The classification and de-aliasing methods with respect to multi-spectra and hyper-spectra have been widely studied in recent years. And both K-mean clustering algorithm and spectral similarity algorithm are familiar classification methods. The present paper improved the K-mean clustering algorithm by using spectral similarity match algorithm to perform a new spectral classification algorithm. Two spectra with the farthest distance first were chosen as reference spectra. The Euclidean distance method or spectral angle cosine method then were used to classify data cube on the basis of the two reference spectra, and delete the spectra which belongs to the two reference spectra. The rest data cube was used to perform new classification according to a third spectrum, which is the farthest distance or the biggest angle one corresponding to the two reference spectra. Multi-spectral data cube was applied in the experimental test. The results of K-mean clustering classification by ENVI, compared with simulation results of the improved K-mean algorithm and the spectral angle cosine method, demonstrated that the latter two classify two air bubbles explicitly and effectively, and the improved K-mean algorithm classifies backgrounds better, especially the Euclidean distance method can classify the backgrounds integrally.

Number of references:10

Main heading:Clustering algorithms

Controlled terms:Geometry

Uncontrolled terms:Air bubbles - Classification algorithm - Classification methods - Data cube - Euclidean distance methods - Experimental test - Hyper spectra - K-mean algorithms - K-mean clustering - K-mean clustering algorithm  - K-means - K-means clustering - Multi-spectra - Multi-spectral data - Reference spectrum - Simulation result - Spectral angles - Spectral classification - Spectral similarity

Classification code:721 Computer Circuits and Logic Elements - 921 Mathematics

DOI:10.3964/j.issn.1000-0593(2011)05-1357-04

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 259>

 

Accession number:20113514279555

Title:Response calculation for NOPD beam by an improved algorithm based on the endochronic theory and test verification

Authors:Wang, Wei (1); Li, Yuyan (2)

Author affiliation:(1) Space Optics Laboratory, Xi'an Institute of Optics and Precision Mechanics of CAS, Xi'an 710119, China; (2) Department of Mechanical and Electrical Engineering, Xi'an Technological University, Xi'an 710032, China

Corresponding author:Wang, W.(wangwei@opt.ac.cn)

Source title:Applied Mechanics and Materials

Abbreviated source title:Appl. Mech. Mater.

Volume:80-81

Monograph title:Information Engineering for Mechanics and Materials

Issue date:2011

Publication year:2011

Pages:845-849

Language:English

ISSN:16609336

E-ISSN:16627482

ISBN-13:9783037852125

Document type:Conference article (CA)

Conference name:2011 International Conference on  Information Engineering for Mechanics and Materials, ICIMM 2011

Conference date:August 13, 2011 - August 14, 2011

Conference location:Shanghai, China

Conference code:86278

Sponsor:Zhejiang Economic and Trade Polytechnic; Institute of Electronic and Information Technology

Publisher:Trans Tech Publications, P.O. Box 1254, Clausthal-Zellerfeld, D-38670, Germany

Abstract:Non-Obstructive Particle Damping (NOPD) is a new damping technique which is based on traditional particle damping and impact damping technique. NOPD Structure has a good effect on decreasing sound and vibration. A new improved algorithm based on the endochronic theory is researched in the paper. Response calculation by the algorithm and tests for NOPD beam have been done in conditions of one, two and three holes filled with tungsten particles. Results show it feasible to calculate the response of NOPD structure by the improved algorithm, which affords an effective analysis method for engineering application of NOPD technique. &copy; (2011) Trans Tech Publications.

Number of references:5

Main heading:Algorithms

Controlled terms:Damping - Tungsten

Uncontrolled terms:Effective analysis - Endochronic theory - Engineering applications - Impact damping - Improved algorithm - Non-obstructive particle damping - Particle damping - Response calculation - Structural response - Test verification

Classification code:543.5 Tungsten and Alloys - 723 Computer Software, Data Handling and Applications - 921 Mathematics - 931.1 Mechanics

DOI:10.4028/www.scientific.net/AMM.80-81.845

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 260>

 

Accession number:20111313881014

Title:3D adaptive spatio-temporal control of laser-induced refractive index changes in optical glasses

Authors:Stoian, R. (1); Cheng, G. (2); Mauclair, C. (1); Mermillod-Blondin, A. (3); Mishchik, K. (1); Audouard, E. (1); Rosenfeld, A. (3); Hertel, I.V. (3)

Author affiliation:(1) Laboratoire Hubert Curien, Universit&#233; de Lyon, 18 rue Benoit Lauras, 42000 Saint Etienne, France; (2) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, CAS, 710119 Xi'an Shaanxi, China; (3) Max-Born-Institut f&#252;r Nichtlineare Optik und Kurzzeitspektroskopie, Max-Born-Strae 2a, 12489 Berlin, Germany

Corresponding author:Stoian, R.(razvan.stoian@univ-st-etienne.fr)

Source title:Proceedings of SPIE - The International Society for Optical Engineering

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:7921

Monograph title:Laser-Based Micro- and Nanopackaging and Assembly V

Issue date:2011

Publication year:2011

Article number:79210H

Language:English

ISSN:0277786X

CODEN:PSISDG

ISBN-13:9780819484581

Document type:Conference article (CA)

Conference name:Laser-Based Micro- and Nanopackaging and Assembly V

Conference date:January 25, 2011 - January 27, 2011

Conference location:San Francisco, CA, United states

Conference code:84422

Sponsor:The Society of Photo-Optical Instrumentation Engineers (SPIE)

Publisher:SPIE, P.O. Box 10, Bellingham, WA 98227-0010, United States

Abstract:The nonlinear absorption character determines a high potential of ultrafast laser pulses for 3D processing of transparent materials, particularly for optical functions. This is based on refractive index engineering involving thermo-mechanical, and structural rearrangements of the dielectric matrix. Challenges are related to the time-effectiveness of irradiation, correct beam delivery, and the influence of material properties on the exposure results. Particularly for light-guiding applications it is suitable to master positive refractive index changes in a time-efficient manner, considering that the result depends on the deposited energy and its relaxation paths. To address these challenges several irradiation concepts based on adaptive optics in spatial and temporal domains were developed. We review here some of the applications from various perspectives. A physical aspect is related to temporal pulse shaping and time-synchronized energy delivery tuned to material transient reactions, enabling thus a synergetic interaction between light and matter and, therefore, optimal results. Examples will be given concerning refractive index flip in thermally expansive glasses by thermo-mechanical regulation and energy confinement by nonlinear control. A second engineering aspect is related to processing efficiency. We give insights into beam-delivery corrections and 3D parallel complex photoinscription techniques utilizing dynamic wavefront engineering. Additionally, in energetic regimes, ultrafast laser radiation can generate an intriguing nanoscale spontaneous arrangement, leading to form birefringence and modulated index patterns. Using the birefringence properties and the deriving anisotropic optical character, polarization sensitive devices were designed and fabricated. The polarization sensitivity allows particular light propagation and confinement properties in 3D structures. &copy; 2011 SPIE.

Number of references:66

Main heading:Glass lasers

Controlled terms:Birefringence - Dielectric materials - Ion beams - Irradiation - Light - Light refraction - Optical glass - Polarization - Pulse shaping circuits - Refractive index  - Refractometers - Three dimensional - Ultrafast lasers - Ultrafast phenomena

Uncontrolled terms:3-d processing - Dielectrics - Nano-structuring - Polarization sensitivity - Spatio-temporal - Ultra-fast

Classification code:932.1 High Energy Physics - 902.1 Engineering Graphics - 744.9 Laser Applications - 941.3 Optical Instruments - 744.1 Lasers, General - 713.4 Pulse Circuits - 708.1 Dielectric Materials - 741 Light, Optics and Optical Devices

DOI:10.1117/12.873071

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 261>

 

Accession number:20113614296313

Title:Development of control circuits for the CCD Stereo Camera of Chang'E-1 satellite based on FPGA

Authors:Duan, Yong-Qiang (1); Wen, De-Sheng (1); Gao, Wei (1); Zheng, Pei-Yun (1); Zhao, Bao-Chang (1)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, CAS, Xi'an, 710119, China; (2) Chinese Academy of Sciences (CAS), Graduate University, Beijing, 100039, China

Corresponding author:Duan, Y.-Q.(dyqfree@opt.ac.cn)

Source title:Proceedings of SPIE - The International Society for Optical Engineering

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:8196

Monograph title:International Symposium on Photoelectronic Detection and Imaging 2011: Space Exploration Technologies and Applications

Issue date:2011

Publication year:2011

Article number:819614

Language:English

ISSN:0277786X

CODEN:PSISDG

ISBN-13:9780819488374

Document type:Conference article (CA)

Conference name:International Symposium on Photoelectronic Detection and Imaging 2011: Space Exploration Technologies and Applications

Conference date:May 24, 2011 - May 26, 2011

Conference location:Beijing, China

Conference code:86296

Sponsor:Chinese Society of Astronautics (CAS)

Publisher:SPIE, P.O. Box 10, Bellingham, WA 98227-0010, United States

Abstract:The CCD Stereo Camera is a principal science payload on board the Chang'E-1 (CE-1) satellite, developed and launched by China for the first Lunar Exploration Program. The principal task of the camera is to take image of the lunar surface in the visible band and obtains three-dimensional lunar terrain. The CCD Stereo Camera is designed based on threelinear array photogrammetric theories. The focal plane of the camera is comprised of a frame transfer CCD with size of 1024x1024 pixels. There are only three lines to be used to form a three-linear array, and the other lines are not used. The timing and control circuits of the camera are designed based on FPGA. An Actel's anti-fuse based FPGA, A1020B, is available, but the speed and logical resources of the device both are limited. This paper describes the design requirements, considerations and trade-off subject to the constraints. Especially, A novel logic circuit is introduced to generate the pulses with width of about 10ns&sim;20ns with constraint of 8MHz external clock, which is used to design correlated double sampling (CDS) control signals and CCD reset signal. Finally, the result of flying verifications on-board of the timing and control circuits are also described. &copy; 2011 SPIE.

Number of references:7

Main heading:CCD cameras

Controlled terms:Array processing - Field programmable gate arrays (FPGA) - Lunar missions - Satellites - Signal detection - Space research - Three dimensional - Timing circuits

Uncontrolled terms:CE-1 satellite - Chang'E-1 satellite - Chinese lunar exploration program - Payloads - Stereo cameras - Three-linear array - Timing

Classification code:902.1 Engineering Graphics - 732 Control Devices - 721.3 Computer Circuits - 716.1 Information Theory and Signal Processing - 716 Telecommunication; Radar, Radio and Television - 714.2 Semiconductor Devices and Integrated Circuits - 713.4 Pulse Circuits - 656.2 Space Research - 656.1 Space Flight - 655.2 Satellites - 655.1 Spacecraft, General

DOI:10.1117/12.900345

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 262>

 

Accession number:20112214017105

Title:Effects of beam misalignment on space laser communication systems

Authors:Lu, Hongqiang (1); Zhao, Wei (1); Hu, Hui (1); Wang, Wei (1); Xie, Xiaoping (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Acad. of Sci., Xi'an 710119, China; (2) Graduate University of Chinese Acad. of Sci., Beijing 100039, China

Corresponding author:Lu, H.(luhongqiang@opt.ac.cn)

Source title:Qiangjiguang Yu Lizishu/High Power Laser and Particle Beams

Abbreviated source title:Qiangjiguang Yu Lizishu

Volume:23

Issue:4

Issue date:April 2011

Publication year:2011

Pages:895-900

Language:Chinese

ISSN:10014322

CODEN:QYLIEL

Document type:Journal article (JA)

Publisher:Editorial Office of High Power Laser and Particle Beams, P.O. Box 919-805, Mianyang, 621900, China

Abstract:In order to predict and estimate the effects of atmospheric turbulence, vibration of terminals and misalignment on space laser communication, the amplitude of detected signals changing with lateral offset (between the center of the focused beam and the center of the photodetector in the detecting plane and defocus (between the detecting plane and the focal plane, are calculated in simulation and measured in experiment, and the fit error rate(BER), signal-to-noise ratio and jitter of the detected signals changing with lateral offset and defocus are also measured. The results show that the performance of space laser communication systems would deteriorate significantly as the lateral offset and defocus increase, and the lateral offset has more effect. The maximum defocus and lateral offset permitted are 1 mm and 0.03 mm, respectively, with the experimental parameters, when the BER of communication changes from 10^-10 to 10^-5.

Number of references:10

Main heading:Laser beam effects

Controlled terms:Alignment - Atmospheric thermodynamics - Atmospheric turbulence - Bit error rate - Communication - Integrated optics - Jitter - Optoelectronic devices - Signal detection - Signal to noise ratio  - Telecommunication systems

Uncontrolled terms:Beam misalignment - Bit-errors - Defocus - Error rate - Experimental parameters - Focal Plane - Focused beams - Laser communication - Predict and estimate - Signal to noise  - Space laser communication

Classification code:744.8 Laser Beam Interactions - 741.3 Optical Devices and Systems - 723.1 Computer Programming - 716.1 Information Theory and Signal Processing - 716 Telecommunication; Radar, Radio and Television - 601.1 Mechanical Devices - 443.1 Atmospheric Properties

DOI:10.3788/HPLPB20112304.0895

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 263>

 

Accession number:20114914584354

Title:Aircraft recognition scheme based on feature fusion and support vector machine

Authors:Zhu, Xu-Feng (1); Ma, Cai-Wen (1); Liu, Bo (1)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics of CAS, Xi'an 710119, China; (2) Graduate University of Chinese Academy of Science, Beijing 100049, China

Corresponding author:Zhu, X.-F.(zhuxufeng@126.com)

Source title:Guangdianzi Jiguang/Journal of Optoelectronics Laser

Abbreviated source title:Guangdianzi Jiguang

Volume:22

Issue:11

Issue date:November 2011

Publication year:2011

Pages:1710-1713

Language:Chinese

ISSN:10050086

CODEN:GUJIE9

Document type:Journal article (JA)

Publisher:Board of Optronics Lasers, No. 47 Yang-Liu-Qing Ying-Jian Road, Tian-Jin City, 300380, China

Abstract:A new combination invariants method is proposed for aircraft recognition. For all kinds of aircraft types, Hu moments, affine moments and normalized Fourier descriptors are extracted and combined. As the above invariants are too dispersed, four kinds of normalized methods are studied and combined with support vector machine (SVM) to improve aircraft classification performance. Simulation results show that the classification performance is better by the combination invariants which are combined with support vector machine classifier or neuron network than that by any single kind of invariants which are combined with corresponding classifiers, and the classification performance is better by support vector machine classifier than that by traditional neuron network classifier. Moreover, when combination invariants are sent to intelligent classifiers, a special normalization method can improve the classification performance.

Number of references:15

Main heading:Support vector machines

Controlled terms:Aircraft - Computer simulation - Feature extraction - Neural networks - Vectors

Uncontrolled terms:Classification performance - Combination invariants - Feature fusion - Fourier descriptors - Hu moments - Intelligent classifiers - Neuron networks - Normalization - Normalization methods - Normalized method  - Support vector

Classification code:652.1 Aircraft, General - 723 Computer Software, Data Handling and Applications - 921.1 Algebra

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 264>

 

Accession number:20110813682542

Title:Tunable multi-channel wavelength demultiplexer based on MIM plasmonic nanodisk resonators at telecommunication regime

Authors:Wang, Guoxi (1); Lu, Hua (1); Liu, Xueming (1); Mao, Dong (1); Duan, Lina (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China

Corresponding author:Wang, G.

Source title:Optics Express

Abbreviated source title:Opt. Express

Volume:19

Issue:4

Issue date:February 14, 2011

Publication year:2011

Pages:3513-3518

Language:English

E-ISSN:10944087

Document type:Journal article (JA)

Publisher:Optical Society of America, 2010 Massachusetts Ave, NW, Washington, DC, DC 20036-1023, United States

Abstract:The tunable multi-channel wavelength demultiplexer (WDM) based on metal-insulator-metal plasmonic nanodisk resonators is designed and numerically investigated by utilizing Finite-Difference Time-Domain (FDTD) simulations. It is found that the channel wavelength of WDM is easily tuned by changing the geometrical parameters of the structure and the material filled in the nanodisk resonator. The multi-channel WDM structure consisting of a plasmonic waveguide and several nanodisk resonators increases the transmission up to 70% at telecommunication regime, which is two times higher than the results reported in a recent literature [Opt. Express 18, 11111(2010)]. Our WDM can find important potential applications in highly integrated optical circuits. &copy; 2011 Optical Society of America.

Number of references:23

Main heading:MIM devices

Controlled terms:Demultiplexing - Finite difference time domain method - Metal insulator boundaries - Plasmons - Resonators

Uncontrolled terms:Channel wavelength - Finite-difference time-domain simulation - Geometrical parameters - Highly integrated - Metal insulator metals - Multi-channel - Multi-channel WDM - Nanodisks - Plasmonic - Plasmonic waveguides  - Potential applications

Classification code:921 Mathematics - 718 Telephone Systems and Related Technologies; Line Communications - 717 Optical Communication - 716 Telecommunication; Radar, Radio and Television - 714.2 Semiconductor Devices and Integrated Circuits - 714 Electronic Components and Tubes - 712.1 Semiconducting Materials

DOI:10.1364/OE.19.003513

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 265>

 

Accession number:20113714314994

Title:Autonomous star identification for GEO objects orientation based on delaunay triangulation

Authors:Sun, Jing (1); L, Guangrui (1); Wen, Desheng (1); Xue, Bin (1); Yang, Shaodong (1)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Science, Xi'an, China; (2) Graduate University of Chinese Academy of Sciences, Beijing, China; (3) Shaanxi Institute of Education, Xi'an, China

Corresponding author:Sun, J.

Source title:Transactions of the Japan Society for Aeronautical and Space Sciences

Abbreviated source title:Trans Jpn Soc Aeronaut Space Sci

Volume:54

Issue:183

Issue date:2011

Publication year:2011

Pages:62-66

Language:English

ISSN:05493811

CODEN:TJASAM

Document type:Journal article (JA)

Publisher:Japan Society for Aeronautical and Space Sciences, 1-18-2 Shinbashi - Minato-ku, Tokyo, 105-0004, Japan

Abstract:A novel star identification algorithm for GEO objects orientation is presented greatly. The quadrangle patterns are successfully generated by Delaunay triangulation applied to the sphere point set, which reduces the memory and identification time cost compared to the conventional triangle match algorithm. The guide database consisting of three correlative data tables is constructed to arrange the data efficiently. Furthermore, an index array is introduced to search the database rapidly. At validation, 60 images recorded by the GEO surveillance camera are used to implement the algorithm, which gives an identification rate ranging from 99.38% to 95.52% at various positional noise amplitudes. The achievable performance is demonstrated by comparison with two published algorithms. &copy; 2011 The Japan Society for Aeronautical and Space Sciences.

Number of references:17

Main heading:Stars

Controlled terms:Algorithms - Cameras - Database systems - Image matching - Security systems - Spheres - Triangulation

Uncontrolled terms:Delaunay triangulation - GEO Orbit - GEO surveillance camera - Guide database - Star identification

Classification code:921 Mathematics - 914.1 Accidents and Accident Prevention - 742.2 Photographic Equipment - 741 Light, Optics and Optical Devices - 723.3 Database Systems - 723 Computer Software, Data Handling and Applications - 657.2 Extraterrestrial Physics and Stellar Phenomena - 631 Fluid Flow - 405.3 Surveying

DOI:10.2322/tjsass.54.62

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 266>

 

Accession number:20114014386422

Title:The research of space telescope CCD camera image resource simulative system

Authors:Yang, Zuoting (1); Wang, Hongwei (1); Qiao, Weidong (1); Ruan, Ping (1)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics of CAS, Xi'an Shaanxi, 710119, China; (2) Graduate School of CAS, Beijing, 100039, China

Corresponding author:Yang, Z.(zuotingyang@126.com)

Source title:ICEOE 2011 - 2011 International Conference on Electronics and Optoelectronics, Proceedings

Abbreviated source title:ICEOE - Int. Conf. Electron. Optoelectron., Proc.

Volume:3

Monograph title:ICEOE 2011 - 2011 International Conference on Electronics and Optoelectronics, Proceedings

Issue date:2011

Publication year:2011

Pages:V386-V389

Article number:6013307

Language:English

ISBN-13:9781612842738

Document type:Conference article (CA)

Conference name:2011 International Conference on Electronics and Optoelectronics, ICEOE 2011

Conference date:July 29, 2011 - July 31, 2011

Conference location:Dalian, China

Conference code:86661

Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States

Abstract:The equipment that the payload electronic control box matches the satellite Charge-Coupled Device (CCD) camera must be rigorously tested before being put into use. The traditional testing process is to make it with the bulky CCD camera system docking and then to capture a certain image to analyze, this will cause a waste of time and material. In consideration for the above problems, a simulative CCD camera image resource system is proposed in this paper. The control signal of a simulative CCD camera image resource is usually implemented in the Field Programmable Gate Array (FPGA), thus increasing the complexity of the hardware language, and stability will fall and making post-adjustment is more trouble. This paper presents a system which is controlled based on the host computer software. It makes complex code integrate into the host computer and sets aside a adjust interface to the software in advance, achieving with the FPGA circuit board to send the picture generated by the system cycle together. Sending images, image display and serial communication are usually for a thread in the general simulative CCD camera image resource system, this will inevitably cause some problems that often appear in the process. However, the system utilizes a three-run thread synchronization mode which makes the system more flexible, very easy to adjust. Extensive tests show that the simulative CCD camera image resource system has been running with satisfactory results. So it can replace CCD camera to test the payload electrical control box, which is stable and reliable test for the project and provides a strong support. &copy; 2011 IEEE.

Number of references:7

Main heading:CCD cameras

Controlled terms:Charge coupled devices - Communication - Control - Display devices - Field programmable gate arrays (FPGA) - Optoelectronic devices

Uncontrolled terms:Camera images - Camera systems - Complex codes - Control signal - Electrical control - Electronic controls - FPGA circuits - Hardware languages - host computer - Host computers  - Image display - payload electric-control box - Resource system - Serial communications - System cycle - Testing process - Thread synchronization

Classification code:714.2 Semiconductor Devices and Integrated Circuits - 716 Telecommunication; Radar, Radio and Television - 721.3 Computer Circuits - 722.2 Computer Peripheral Equipment - 731 Automatic Control Principles and Applications - 732 Control Devices

DOI:10.1109/ICEOE.2011.6013307

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 267>

 

Accession number:20113114199074

Title:Measurement research on electromagnetic pulse hazard for electroexplosive device based on optical-fiber fluorescence

Authors:Liu, Lanshu (1); Du, Chong (3); Zhang, Wensong (1); He, Liangming (2)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Acad. of Sci., Xi'an, Shaanxi 710119, China; (2) Graduate University of Chinese Acad. of Sci., Beijing 100049, China; (3) Jiaxing Wireless Sensor Networks Engineering Center, Chinese Acad. of Sci., Jiaxing, Zhejiang 300381, China

Corresponding author:Du, C.(duc@mail.sim.ac.cn)

Source title:Guangxue Xuebao/Acta Optica Sinica

Abbreviated source title:Guangxue Xuebao

Volume:31

Issue:SUPPL.1

Issue date:June 2011

Publication year:2011

Article number:s100203

Language:Chinese

ISSN:02532239

CODEN:GUXUDC

Document type:Journal article (JA)

Publisher:Chinese Optical Society, P.O. Box 80, Xi'an, 710068, China

Abstract:An optical-fiber fluorescence temperature detect system was proposed for hazard analysis and measurement of electromagnetic pulse of the electroexplosive devices(EED). The feasibility of the method was investigated in both theory and experiment. Different temperatures of EED can be obtained through different fluorescence lifetime, then the induced current is obtained, and finally the hazard of electromagnetic pulse of EED is measured. Experiment results show the system can analyze and measure the hazard of electromagnetic pulse of EED accurately and real-timely, so it is helpful to the research of security and reliability of EED.

Number of references:7

Main heading:Hazards

Controlled terms:Electromagnetic pulse - Electromagnetism - Electronic warfare - Experiments - Fluorescence - Nuclear explosions

Uncontrolled terms:Electroexplosive devices - Fluorescence lifetimes - Fluorescent lifetime - Hazard analysis - Measurement research

Classification code:701 Electricity and Magnetism - 715 Electronic Equipment, General Purpose and Industrial - 716 Telecommunication; Radar, Radio and Television - 741.1 Light/Optics - 901.3 Engineering Research - 914.1 Accidents and Accident Prevention

DOI:10.3788/AOS201131.s100203

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 268>

 

Accession number:20113214224374

Title:Design and implementation of high-speed multiwavelength pyrometry measurement system based on CMOS image sensor

Authors:Wang, Bo (1); Bai, Yonglin (1); Liu, Baiyu (1); Bai, Xiaohong (1); Yang, Wenzheng (1); Qin, Junjun (1); Gou, Yongsheng (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics of CAS, Xi'an 710119, China; (2) Graduate University of Chinese Academy of Sciences, Beijing 100049, China

Corresponding author:Wang, B.(wangbo125017@163.com)

Source title:Chinese Optics Letters

Abbreviated source title:Chin. Opt. Lett.

Volume:9

Issue:SUPPL. 1

Issue date:June 2011

Publication year:2011

Pages:S10304

Language:English

ISSN:16717694

Document type:Journal article (JA)

Publisher:Science Press, 18,Shuangqing Street,Haidian, Beijing, 100085, China

Abstract:The detonation temperature is measured both theoretically and experimentally by means of a complementary metal oxide semiconductors (CMOS) image sensor. An experimental system of multiwavelength temperature measurement based on CMOS image sensing technology is designed and realized. The instant spectral information of each moment is captured by row with the CMOS image sensor, depending on the unique characteristic of its rolling shutter. With the use of multiwavelength temperature measurement theory and by fitting spectrum emissivity through the regressive least square method, the color temperature of the detonation whose temperature is variable can be obtained continuously. The system is calibrated by measuring the standard spectrum of the laser. In our system, four time temperatures are measured within 10-&mu;s detonation. Results show that the system has a higher measuring accuracy and speed, and can be applied in high-speed spectral information collection and storage during the detonation. &copy; 2011 Chinese Optics Letters.

Number of references:8

Main heading:CMOS integrated circuits

Controlled terms:Detonation - Digital cameras - Image sensors - Least squares approximations - Measurement theory - Metallic compounds - MOS devices - Sensors - Temperature measurement

Uncontrolled terms:CMOS image sensor - Color temperatures - Complementary metal oxide semiconductors - Experimental system - High-speed - Image sensing - Least square methods - Measurement system - Measuring accuracy - Multi-wavelength pyrometry  - Multiwavelength - Spectral information - Time temperature

Classification code:944.6 Temperature Measurements - 922 Statistical Methods - 921.6 Numerical Methods - 804.1 Organic Compounds - 801 Chemistry - 742.2 Photographic Equipment - 741.3 Optical Devices and Systems - 714.2 Semiconductor Devices and Integrated Circuits - 521 Fuel Combustion and Flame Research

DOI:10.3788/COL201109.S10304

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 269>

 

Accession number:20111013730927

Title:Polarization detection with polarization interference imaging spectrometer

Authors:Jian, Xiaohua (1); Zhang, Chunmin (1); Zhao, Baochang (3)

Author affiliation:(1) School of Science, Xi'an Jiao Tong University, Xi'an 710049, China; (2) Non-equilibrium Condensed Matter and Quantum Engineering Laboratory, Key Laboratory of Ministry of Education, Xi'an 710049, China; (3) Xi'an Institute of Optics and Precision Mechanics, Academia Sinica, Xi'an 710068, China

Corresponding author:Zhang, C.(zcm@mail.xjtu.edu.cn)

Source title:Optik

Abbreviated source title:Optik

Volume:122

Issue:8

Issue date:April 2011

Publication year:2011

Pages:677-680

Language:English

ISSN:00304026

Document type:Journal article (JA)

Publisher:Urban und Fischer Verlag Jena, P.O. Box 100537, Jena, 07705, Germany

Abstract:A new method of measuring the intensity and state of polarization of optical radiation by means of the high resolution polarization interference imaging spectrometer (PIIS) is introduced and theoretically investigated in this paper. The error accuracy analysis is proposed, and it is proved that the system is very stable and precise in theory. In this new way, the polarized characteristics of light could be taken good use to analyze and distinguish objects in passive remote sensing with the PIIS, which means that the polarization interference imaging spectrometer now can be used not only as cameras and interferometers but also as polaristrobometers. &copy; 2010 Elsevier B.V.

Number of references:21

Main heading:Polarization

Controlled terms:Remote sensing - Spectrometers - Spectrometry

Uncontrolled terms:Accuracy analysis - High resolution - Optical radiations - Passive remote sensing - Polarization detection - Polarization interference imaging spectrometer - Polarization interferences - State of polarization - Stokes vectors

Classification code:711.1 Electromagnetic Waves in Different Media - 731.1 Control Systems - 801 Chemistry

DOI:10.1016/j.ijleo.2010.05.004

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 270>

 

Accession number:20113614296191

Title:Low-frequency vibrational modes of benzoic acid investigated by terahertz time-domain spectroscopy and theoretical simulations

Authors:Yan, Hui (1); Fan, Wen-Hui (1); Zheng, Zhuan-Ping (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China

Corresponding author:Fan, W.-H.(fanwh@opt.ac.cn)

Source title:Proceedings of SPIE - The International Society for Optical Engineering

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:8195

Monograph title:International Symposium on Photoelectronic Detection and Imaging 2011: Terahertz Wave Technologies and Applications

Issue date:2011

Publication year:2011

Article number:1

Language:English

ISSN:0277786X

CODEN:PSISDG

ISBN-13:9780819488367

Document type:Conference article (CA)

Conference name:International Symposium on Photoelectronic Detection and Imaging 2011: Terahertz Wave Technologies and Applications

Conference date:May 24, 2011 - May 26, 2011

Conference location:Beijing, China

Conference code:86295

Sponsor:Chinese Society of Astronautics (CAS)

Publisher:SPIE, P.O. Box 10, Bellingham, WA 98227-0010, United States

Abstract:In this paper, the low-frequency vibrational modes of crystalline benzoic acid (BA) have been investigated by terahertz time-domain spectroscopy (THz-TDS) and theoretical simulations based on the linearity combination of atomic orbital within the Density Functional Theory (DFT) as well as ab initio molecular orbital method at second-order M&oslash;ller-Plesset Perturbation Theory (MP2) level for single molecule and dimer. Experimentally, a series of prominent absorption features of pure benzoic acid relevant to intra- and inter-molecular vibrational modes have been obtained below 4 THz at room temperature. For the theoretical simulations, geometry-optimization results of bond lengths and dihedral angles in both BA monomer and dimer are very close to experimental neutron diffraction measurements. Furthermore, the simulation results demonstrate absorption profile centered at 1.89 THz contains low-frequency modes of Ph-COOH twisting due to intramolecular motion and cogwheel owing to intermolecular motion. All the intra- and inter-molecular vibrational modes measured have also been assigned. &copy; 2011 SPIE.

Number of references:13

Main heading:Terahertz spectroscopy

Controlled terms:Absorption - Atomic spectroscopy - Carboxylic acids - Density functional theory - Dihedral angle - Dimers - Laser pulses - Molecular orbitals - Molecular structure - Molecular vibrations  - Neutron diffraction - Perturbation techniques - Plasmons - Reflectometers - Spectrophotometers - Terahertz wave detectors - Terahertz waves - Time domain analysis

Uncontrolled terms:Benzoic acid - DFT - Low-frequency vibrational modes - MP2 - THz-TDS

Classification code:931 Classical Physics; Quantum Theory; Relativity - 921 Mathematics - 804.1 Organic Compounds - 804 Chemical Products Generally - 941.3 Optical Instruments - 801.4 Physical Chemistry - 744.1 Lasers, General - 732.2 Control Instrumentation - 711 Electromagnetic Waves - 801 Chemistry

DOI:10.1117/12.900322

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 271>

 

Accession number:20113614296259

Title:The design and characteristics analysis of lunar based Two Axes gimbal with high reliability

Authors:Huang, Jing (1); Liu, Zhao-Hui (2); Li, Zhi-Guo (1); Chang, Zhi-Yuan (2); Shi, Xin (3)

Author affiliation:(1) Graduate School, Chinese Academy of Science, Beijing 100039, China; (2) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (3) North Electro-optic Group Co., Ltd., China

Corresponding author:Huang, J.

Source title:Proceedings of SPIE - The International Society for Optical Engineering

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:8196

Monograph title:International Symposium on Photoelectronic Detection and Imaging 2011: Space Exploration Technologies and Applications

Issue date:2011

Publication year:2011

Article number:81960L

Language:English

ISSN:0277786X

CODEN:PSISDG

ISBN-13:9780819488374

Document type:Conference article (CA)

Conference name:International Symposium on Photoelectronic Detection and Imaging 2011: Space Exploration Technologies and Applications

Conference date:May 24, 2011 - May 26, 2011

Conference location:Beijing, China

Conference code:86296

Sponsor:Chinese Society of Astronautics (CAS)

Publisher:SPIE, P.O. Box 10, Bellingham, WA 98227-0010, United States

Abstract:In order to meet the requirements of lunar based astronomical observation which includes three different observing modes: specific celestial body observations, calibration observations, sky surveys, the two Axes gimbal is designed to guarantee the telescope can point and listen to a exact point in the sky. Due to the harsh environment on the moon and space payload weight limit, based on lightweight design method, such as structure optimization and rational material selection, the weight of gimbal is greatly reduced without decrease of rigidity and strength. In addition, because of the usage of external rotor mechanism for vertical shaft, the system's first order mode along the emission direction is greatly improved. On the other hand, The shaft with one fixed end and another free end is adopted to reduce the deflection between its two larger span ends. Furthermore, the shaft stuck at both ends due to temperature changes on the moon is eliminated by rational determining the clearance of deep groove ball bearings. Experiments show that, the system's first order resonant frequency can reach 81HZ, and the mechanism works well from -25 &deg;C to +60 &deg;C without stuck phenomenon occured. So, because of the adoption of approaches mentioned above, the mechanism has good mechanical properties, such as high reliability and light weight. &copy; 2011 SPIE.

Number of references:6

Main heading:Reliability analysis

Controlled terms:Ball bearings - Lunar missions - Mechanical properties - Natural frequencies - Space research - Structural optimization

Uncontrolled terms:Astronomical observation - Celestial bodies - Characteristics analysis - Deep groove ball bearing - First order - Free end - Harsh environment - High reliability - Light weight - Lightweight design  - Lunar based - Material selection - Structure optimization - Temperature changes - Two axes gimbal - Vertical shaft - Weight limits

Classification code:951 Materials Science - 921.5 Optimization Techniques - 913 Production Planning and Control; Manufacturing - 711.1 Electromagnetic Waves in Different Media - 656.2 Space Research - 656.1 Space Flight - 601.2 Machine Components

DOI:10.1117/12.899596

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 272>

 

Accession number:20111313858105

Title:The third-order optical nonlinearities of Ge-Ga-Sb(In)-S chalcogenide glasses

Authors:Guo, Haitao (1); Chen, Hongyan (2); Hou, Chaoqi (1); Lin, Aoxiang (1); Zhu, Yonggang (1); Lu, Shoudi (1); Gu, Shaoxuan (2); Lu, Min (1); Peng, Bo (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Science (CAS), Xi'an, Shaanxi 710119, China; (2) School of Materials Science and Engineering, Wuhan University of Technology, Wuhan, Hubei 430070, China

Corresponding author:Gu, S.(gsx@mail.whut.edu.cn)

Source title:Materials Research Bulletin

Abbreviated source title:Mater Res Bull

Volume:46

Issue:5

Issue date:May 2011

Publication year:2011

Pages:765-770

Language:English

ISSN:00255408

CODEN:MRBUAC

Document type:Journal article (JA)

Publisher:Elsevier Ltd, Langford Lane, Kidlington, Oxford, OX5 1GB, United Kingdom

Abstract:The third-order optical nonlinearities of 80GeS<inf>2</inf>&middot;(20 - x)Ga<inf>2</inf>S<inf>3</inf>&middot;xY<inf>2</inf>S<inf>3</inf> (x = 0, 5, 10, 15, 20 and Y = Sb or In) chalcogenide glasses were investigated utilizing the Z-scan method at the wavelength of 800 nm and their linear optical properties and structure were also studied. By analyzing the compositional dependences and possible influencing factors including the linear refractive index, the concentration of lone electron pairs, the optical bandgap and the amount of weak covalent/homopolar bonds, it indicates that the electronic contribution in weak heteropolar covalent and homopolar metallic bonds is responsible for large nonlinear refractive index n<inf>2</inf> in the chalcogenide glasses. These chalcogenide glasses have characteristics of environmentally friendship, wide transparency in the visible region, high nonlinear refractive index n <inf>2</inf> and low nonlinear absorption coefficient &beta;, and would be expected to be used in the all-optical switches working at 1330 nm and 1550 nm telecommunication wavelengths. &copy; 2010 Elsevier Ltd. All rights reserved.

Number of references:28

Main heading:Phase change memory

Controlled terms:Chalcogenides - Gallium - Germanium - Glass - Light refraction - Nonlinear optics - Optical switches - Raman scattering - Raman spectroscopy - Refractive index  - Refractometers

Uncontrolled terms:1550 nm - A. Chalcogenides - A. Glasses - All optical switch - Band gaps - C. Raman spectroscopy - Chalcogenide glass - Compositional dependence - D. Optical properties - Electronic contributions  - Influencing factor - Linear optical properties - Lone electron pair - Metallic bonds - Nonlinear absorption coefficient - Nonlinear refractive index - Telecommunication wavelengths - Third-order optical nonlinearities - Visible region - Z-scan method

Classification code:549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals - 741 Light, Optics and Optical Devices - 801.4 Physical Chemistry - 812.3 Glass - 941.3 Optical Instruments

DOI:10.1016/j.materresbull.2010.11.020

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 273>

 

Accession number:20113214224388

Title:Study on benzoic acid by THz time-domain spectroscopy and density functional theory

Authors:Zheng, Zhuanping (1); Fan, Wenhui (1); Xue, Bing (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China

Corresponding author:Fan, W.(fanwh@opt.ac.cn)

Source title:Chinese Optics Letters

Abbreviated source title:Chin. Opt. Lett.

Volume:9

Issue:SUPPL. 1

Issue date:June 2011

Publication year:2011

Pages:S10506

Language:English

ISSN:16717694

Document type:Journal article (JA)

Publisher:Science Press, 18,Shuangqing Street,Haidian, Beijing, 100085, China

Abstract:In this letter, we employ terahertz time-domain spectroscopy (THz-TDS) technology to measure the THz absorption spectrum and refractive index of benzoic acid at room temperature. Linearity combination of atomic orbital (LCAO) within the density functional theory (DFT) is also used to compute the vibrational absorption spectra of benzoic acid in monomer and dimer. In addition, based on the results obtained from density functional calculation, the origins of observed intra-molecular and inter-molecular vibrational modes under specific peaks are interpreted. &copy; 2011 Chinese Optics Letters.

Number of references:12

Main heading:Density functional theory

Controlled terms:Absorption - Absorption spectroscopy - Atomic spectroscopy - Carboxylic acids - Dimers - Light absorption - Molecular structure - Quantum chemistry - Reflectometers - Refractive index  - Terahertz spectroscopy - Time domain analysis

Uncontrolled terms:Atomic orbital - Benzoic acid - Density-functional calculations - Room temperature - Terahertz time domain spectroscopy - THz absorption spectra - THz time domain spectroscopy - Vibrational absorption - Vibrational modes

Classification code:931 Classical Physics; Quantum Theory; Relativity - 921 Mathematics - 804.1 Organic Compounds - 941.3 Optical Instruments - 804 Chemical Products Generally - 801 Chemistry - 741.1 Light/Optics - 801.4 Physical Chemistry

DOI:10.3788/COL201109.S10506

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 274>

 

Accession number:20112714115192

Title:RGB high brightness LED modules for projection display application

Authors:Peng, Chenhui (1); Li, Xiaoning (1); Zhang, Pu (1); Xiong, Lingling (1); Liu, Xingsheng (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xian Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xian, Shaanxi, 710119, China; (2) Xian Focuslight Technologies Company, Ltd., Xian, Shaanxi, 710119, China

Corresponding author:Peng, C.(pengchenhui@opt.ac.cn)

Source title:IEEE/OSA Journal of Display Technology

Abbreviated source title:IEEE/OSA J. Disp. Technol.

Volume:7

Issue:8

Issue date:2011

Publication year:2011

Pages:448-453

Article number:5934476

Language:English

ISSN:1551319X

CODEN:IJDTAL

Document type:Journal article (JA)

Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States

Abstract:Light-emitting diodes (LEDs) have numerous advantages, such as long lifetime, large color gamut, small size, and absence of mercury vapor. In recent years, there has been recognition that high brightness LED could be an alternative light source for projection display application. In this work, dielectric compound parabolic concentrators (CPCs) were designed and optimized for multiple-LED array package for projection display application. The performance of rectangular CPC was studied and compared to theoretical simulations. More than 85% light, emitted by multiple-LED arrays, can be collected by the CPC and transmitted within the designed angle. A rectangular CPC was fabricated as the collector and collimator. The CPC was integrated with multiple-LED array package, and RGB high brightness LED modules with rectangular CPCs were fabricated and their performances were characterized. &copy; 2011 IEEE.

Number of references:10

Main heading:Light emitting diodes

Controlled terms:Light emission - Light sources - Luminance - Mercury (metal) - Optical projectors

Uncontrolled terms:Array packages - Color gamuts - Compound parabolic concentrator - Dielectric compounds - High brightness LEDs - light-emitting diodes (LEDs) - Long lifetime - Mercury vapor - Projection displays - Small size  - Theoretical simulation

Classification code:549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals - 741.1 Light/Optics - 741.3 Optical Devices and Systems

DOI:10.1109/JDT.2011.2132693

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 275>

 

Accession number:20112414059988

Title:Cantaliver error analysis and correction for lateral optics system of photoelectric theodolite

Authors:Can, Wang (1); Xiaoxu, Yang (1); Sizhong, Zhou (1); Bo, Jiang (1); Humin, Jin (1)

Author affiliation:(1) Xian Institute of Optics and Precision Mechanics of CAS, Xi'an 710119, China

Corresponding author:Can, W.(Wangcan040514100@163.com)

Source title:2011 International Conference on Consumer Electronics, Communications and Networks, CECNet 2011 - Proceedings

Abbreviated source title:Int. Conf. Consum. Electron., Commun. Networks, CECNet - Proc.

Monograph title:2011 International Conference on Consumer Electronics, Communications and Networks, CECNet 2011 - Proceedings

Issue date:2011

Publication year:2011

Pages:4842-4846

Article number:5768978

Language:Chinese

ISBN-13:9781612844572

Document type:Conference article (CA)

Conference name:2011 International Conference on Consumer Electronics, Communications and Networks, CECNet 2011

Conference date:April 16, 2011 - April 18, 2011

Conference location:XianNing, China

Conference code:85030

Sponsor:IEEE Consumer Electronics Society

Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States

Abstract:After analyzing the reasons and effect of cantaliver deformation of optic measurement system which was on photoelectric theodolite laterals side. Measurement error brought by it was corrected according to reasonable simplification and mathematic model built by a coordinate transformation method. Then date come from ANSYS theoretic analysis and experiment of one of those theodolites were used to simulating the error model based on MATLAB. And the error model was proved by comparing the simulating result with the practical measurement date, which provides reference and theoretic elements for error analysis and correction of this type photoelectric theodolite. &copy; 2011 IEEE.

Number of references:8

Main heading:Photoelectricity

Controlled terms:Consumer electronics - Deformation - Error analysis

Uncontrolled terms:Co-ordinate transformation - Error model - laterals - Mathematic model - Measurement system - Optics systems - Photoelectric theodolite - shafting - shafting error - Theoretic analysis

Classification code:421 Strength of Building Materials; Mechanical Properties - 422 Strength of Building Materials; Test Equipment and Methods - 715 Electronic Equipment, General Purpose and Industrial - 741.1 Light/Optics - 913 Production Planning and Control; Manufacturing - 921.6 Numerical Methods

DOI:10.1109/CECNET.2011.5768978

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 276>

 

Accession number:20113214224536

Title:Aircraft recognition based on multiple classifier fusion with multiple invariants

Authors:Zhu, Xufeng (1); Ma, Caiwen (1)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, CAS, Shaanxi, Xi'an 710119, China; (2) Graduate University of Chinese Academy of Science, Beijing 100049, China

Corresponding author:Zhu, X.(zhuxufeng@126.com)

Source title:Yi Qi Yi Biao Xue Bao/Chinese Journal of Scientific Instrument

Abbreviated source title:Yi Qi Yi Biao Xue Bao

Volume:32

Issue:7

Issue date:July 2011

Publication year:2011

Pages:1621-1627

Language:Chinese

ISSN:02543087

CODEN:YYXUDY

Document type:Journal article (JA)

Publisher:Science Press, 18,Shuangqing Street,Haidian, Beijing, 100085, China

Abstract:The difficulties of aircraft image automatic recognition method are analyzed, and the advantages of using multiple classifier fusion for aircraft recognition are pointed out. Then, four kinds of invariants, which include affine moment, Zernike moment, wavelet moment, gradient module of SIFT feature descriptor, are combined with support vector machine to produce four kinds of classifiers. An adaptive weighted voting method is adopted to carry out multiple classifier fusion for improving aircraft recognition rate. Simulation experiment results show that using the proposed adaptive weighted voting method of multiple classifiers, the aircraft recognition rate is superior to the recognition rates using the classifiers constructed with single invariants, and also superior to those using the multiple classifiers constructed with fixed weighted voting method and majority voting method.

Number of references:16

Main heading:Aircraft

Controlled terms:Information fusion

Uncontrolled terms:Adaptive weights - Automatic recognition method - Invariant - Majority voting - Multiple classifier fusion - Multiple classifiers - Recognition rates - SIFT Feature - Simulation experiments - Wavelet moment  - Weighted voting - Zernike moments

Classification code:652.1 Aircraft, General - 903.1 Information Sources and Analysis

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 277>

 

Accession number:20111013735010

Title:Fabrication and characterization of a water-free mid-infrared fluorotellurite glass

Authors:Lin, Aoxiang (1); Ryasnyanskiy, Aleksandr (1); Toulouse, Jean (1)

Author affiliation:(1) Center for Optical Technologies, Physics Department, Lehigh University, Bethlehem, PA 18015, United States; (2) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics (XIOPM), Chinese Academy of Sciences (CAS), Xi'an 710119, China

Corresponding author:Lin, A.(aoxiang.research@gmail.com)

Source title:Optics Letters

Abbreviated source title:Opt. Lett.

Volume:36

Issue:5

Issue date:March 1, 2011

Publication year:2011

Pages:740-742

Language:English

ISSN:01469592

E-ISSN:15394794

CODEN:OPLEDP

Document type:Journal article (JA)

Publisher:Optical Society of America, 2010 Massachusetts Ave, NW, Washington, DC, DC 20036-1023, United States

Abstract:Using a physical and chemical dehydration technique and a high-pressure, ultradry O<inf>2</inf> atmosphere in a semiclosed steel-chamber furnace, we fabricated a group of fluorotellurite glasses with a composition of (90-x) TeO<inf>2</inf>-xZnF<inf>2</inf>-10Na<inf>2</inf>O (mol.%, x = 0-30). For x = 30, no OH absorption was observed in the range of 0.38-6.1&mu;m. This is the first report of a water-free mid-IR fluorotellurite glass, to our knowledge, offering the common advantages of a robust oxide glass and an IR-transparent fluoride one. Besides optimized linear transmittance and absorption, the nonlinear refractive indices and Raman gain coefficients are reduced. These results are discussed in the context of mid-IR high-power laser generation and transmission. &copy; 2011 Optical Society of America.

Number of references:12

Main heading:Glass

Controlled terms:Absorption - Organic polymers - Refractive index - Sodium

Uncontrolled terms:Chamber furnace - Linear transmittance - Midinfrared - Nonlinear refractive index - OH- absorption - Oxide glass - Raman gain coefficients

Classification code:549.1 Alkali Metals - 741.1 Light/Optics - 812.3 Glass - 815.1.1 Organic Polymers - 931.2 Physical Properties of Gases, Liquids and Solids

DOI:10.1364/OL.36.000740

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 278>

 

Accession number:20114914584067

Title:Two bore-sight stereo mapping with single lens, TDI CCD pushing model imaging and compensations of the speed-to-height rate - Chang'e-2 CCD camera

Authors:Zhao, Baochang (1); Wen, Desheng (1); Yang, Jianfeng (1); Gao, Wei (1); Chang, Lingying (1); Xue, Bin (1); Song, Zongxi (1)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, Shaanxi 710119, China

Corresponding author:Zhao, B.(bczhao@opt.ac.cn)

Source title:Guangxue Xuebao/Acta Optica Sinica

Abbreviated source title:Guangxue Xuebao

Volume:31

Issue:9

Issue date:September 2011

Publication year:2011

Pages:0900115-1-0900115-8

Language:Chinese

ISSN:02532239

CODEN:GUXUDC

Document type:Journal article (JA)

Publisher:Chinese Optical Society, P.O. Box 80, Xi'an, 710068, China

Abstract:The synthetic technical option of two bore-sight stereo mapping with single lens, the time delayed and integration (TDI) CCD pushing model imaging and the compensations technique of the speed-to-height rate of Chang'e-2 satellite TDI CCD stereo camera is proposed. It is the first time to employ two TDI CCD as imaging sensors and obtain clear image with high spatial resolution. In order to keep the synchronism between the optical image motion speed on the focal plane array (FPA) and the electronic latent image motion speed during pushing imaging with TDI CCD camera, two speed-to-height rates compensation methods are used: line frequency injection from the ground station and laser altimeter aided line frequency calculation. The camera's mean modulation transfer function is bigger than 0.4 which is tested before the launch. Because of the optimal design, careful fabrication and precise installation, accuracy requirement of on-orbit speed-to-height rate compensation is relaxed. Because technical measures are synthetically used in TDI CCD camera, clear stereo images of the global lunar surface with resolution of 7 m, the highest spatial resolution global images, and the clear images of Sinus Iridum with about 1.3 m resolution on the near-moon-arc of the 15 km &times; 100 km ellipsoid orbit are both obtained. The capability of obtaining high spatial resolution stereo imaging of lunar surface is achieved.

Number of references:9

Main heading:CCD cameras

Controlled terms:Aneroid altimeters - Geometrical optics - Image resolution - Moon - Orbits - Speed

Uncontrolled terms:Compensation method - Ground stations - High spatial resolution - Image on orbit - Imaging sensors - Laser altimeter - Latent images - Line frequency - Lunar surface - On-orbit  - Optical image - Optimal design - Spatial resolution - Stereo cameras - Stereo imaging - Stereo mapping - Stereo-image - TDI-CCD - Technical measures - Time delayed

Classification code:931.1 Mechanics - 742.2 Photographic Equipment - 742 Cameras and Photography - 944.3 Pressure Measuring Instruments - 741.1 Light/Optics - 657.2 Extraterrestrial Physics and Stellar Phenomena - 655.2 Satellites - 741 Light, Optics and Optical Devices

DOI:10.3788/AOS201131.0900115

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 279>

 

Accession number:20113114203520

Title:Solid waste plasma disposal plant

Authors:Yang, Liqing (1); Wang, Haojing (1); Wang, Hongfei (1); Wang, Dapeng (2); Wang, Yue (3)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xian Institute of Optics and Precision Mechanics of CAS, Xian 710119, China; (2) Beijing Institute of Space Long March Vehicle, Beijing 100048, China; (3) Capital Aerospace Machinery Company, Beijing 100076, China

Corresponding author:Wang, H.(yangliqing@opt.ac.cn)

Source title:Journal of Electrostatics

Abbreviated source title:J. Electrostatics

Volume:69

Issue:5

Issue date:October 2011

Publication year:2011

Pages:411-413

Language:English

ISSN:03043886

Document type:Journal article (JA)

Publisher:Elsevier, P.O. Box 211, Amsterdam, 1000 AE, Netherlands

Abstract:This review describes the current status of waste plasma disposal plant. A comprehensive analysis of the available scientific and technical literature on waste plasma disposal plant, including the actual plant design and configuration, operation principle of core facility, the economic viability and floor area of a plasma plant. The case on the development and large scale commercial applications of the solid waste plasma disposal plant should be further research. &copy; 2011 Elsevier B.V.

Number of references:9

Main heading:Waste disposal

Controlled terms:Economic analysis - Plasmas - Solid wastes

Uncontrolled terms:Commercial applications - Comprehensive analysis - Current status - Economic viability - Floor areas - Operation principles - Plant designs - Plasma plants - Plasma technology - Technical literature

Classification code:452.4 Industrial Wastes Treatment and Disposal - 811 Cellulose, Paper and Wood Products - 911.2 Industrial Economics - 932.3 Plasma Physics

DOI:10.1016/j.elstat.2011.05.007

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 280>

 

Accession number:20114014386473

Title:Holographic interfermetry based on fulgide film

Authors:Ji, Ke (1); Menke, Neimule (1); Yao, Baoli (2); Wang, Yingli (2); Chen, Yi (3)

Author affiliation:(1) School of Physical Science and Technology, Inner Mongolia Universtiy, Huhhot, 010021, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710068, China; (3) Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100101, China

Corresponding author:Menke, N.(py_menkenei@imu.edu.cn)

Source title:ICEOE 2011 - 2011 International Conference on Electronics and Optoelectronics, Proceedings

Abbreviated source title:ICEOE - Int. Conf. Electron. Optoelectron., Proc.

Volume:3

Monograph title:ICEOE 2011 - 2011 International Conference on Electronics and Optoelectronics, Proceedings

Issue date:2011

Publication year:2011

Pages:V3276-V3280

Article number:6013358

Language:English

ISBN-13:9781612842738

Document type:Conference article (CA)

Conference name:2011 International Conference on Electronics and Optoelectronics, ICEOE 2011

Conference date:July 29, 2011 - July 31, 2011

Conference location:Dalian, China

Conference code:86661

Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States

Abstract:Holographic interfermetry was realized in a 3-indoly-benzylfulgimide/ PMMA film by using double exposure method and single exposure method for the first time. The structures of an optical wedge and an optical axicon, the rotation angle of the optical wedge and the movement distance of the optical axicon were successfully measured. It is proved that fulgide films can be used as recording medium in holographic interfermetry. As a recording medium in holographic interfermetry, the 3-indoly-benzylfulgimide/PMMA films have many advantages such as low cost, easy to use, rewritable, long life time, and higher signal to noise ratio (with small particles) and higher sensitivity etc. Then using the photoinduced anisotropy property of the 3-indoly-benzylfulgimide/PMMA film, the polarization multiplexing holographic interfermetry was realized, which can be used in particle field's dynamic measurement. This method is told for the first time, and it is proved that using this method, not only the size but also the directions of the objects' movement velocities can be got. &copy; 2011 IEEE.

Number of references:10

Main heading:Optoelectronic devices

Controlled terms:Multiplexing - Polarization - Signal to noise ratio

Uncontrolled terms:3-indoly-benzylfulgimide - Double exposure - Dynamic measurement - Fulgides - holographic interfermetry - Long life - Low costs - Optical wedges - Photo-induced anisotropy - PMMA films  - polarization multiplexing - Recording medium - Rewritable - Rotation angles - Single exposure - Small particles

Classification code:711.1 Electromagnetic Waves in Different Media - 716 Telecommunication; Radar, Radio and Television - 716.1 Information Theory and Signal Processing - 717 Optical Communication - 717.2 Optical Communication Equipment - 718 Telephone Systems and Related Technologies; Line Communications

DOI:10.1109/ICEOE.2011.6013358

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

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Accession number:20122315082953

Title:An algorithm of decomposing disorder encoding spectrum of HTSI using laser

Authors:Liu, Caifang (1); Hu, Bingliang (1); Yan, Peng (1); Qian, Qingming (1); Liu, Lei (1)

Author affiliation:(1) Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Science, Xi'an, 710119, China; (2) Graduate University, Chinese Academy of Science, Beijing, 100084, China

Corresponding author:Liu, C.(liucaifang206@sina.com)

Source title:Proceedings 2011 International Conference on Transportation, Mechanical, and Electrical Engineering, TMEE 2011

Abbreviated source title:Proc. Int. Conf. Transp., Mech., Electr. Eng., TMEE

Monograph title:Proceedings 2011 International Conference on Transportation, Mechanical, and Electrical Engineering, TMEE 2011

Issue date:2011

Publication year:2011

Pages:1780-1783

Article number:6199558

Language:English

ISBN-13:9781457717017

Document type:Conference article (CA)

Conference name:2011 International Conference on Transportation, Mechanical, and Electrical Engineering, TMEE 2011

Conference date:December 16, 2011 - December 18, 2011

Conference location:Changchun, China

Conference code:89940

Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States

Abstract:In order to improve the accuracy of recovered spectrum of Hadamard Transform Spectral Imager (HTSI), an algorithm of decomposing disorder encoding spectrum of HTSI using laser is proposed. The theory of Hadamard Transform (HT) is introduced. HTSI, which was developed in the Key Laboratory of Spectral Imaging Technique of Xi'an Institute of Optics and Precision Mechanics of Chinese Academy of Science in the world first, is presented. The reason why there existing the phenomenon that some spectra encoded disorderly is analyzed deeply. Experiments have been done in the laboratory according to the algorithm using laser with a wavelength of 632.8 nm. It is proved that the variance of the recovered spectrum can be decreased to approximately 3% compared with traditional spectrum recovering method. It has made great contribution to spectrum recovering in laboratory and projects. &copy; 2011 IEEE.

Number of references:15

Main heading:Mathematical transformations

Controlled terms:Algorithms - Electrical engineering - Encoding (symbols) - Imaging techniques - Laser beams - Recovery

Uncontrolled terms:Chinese Academy of Sciences - Hadamard transforms - Precision mechanics - Spectral imaging - Spectral imaging technique

Classification code:921.3 Mathematical Transformations - 921 Mathematics - 744.8 Laser Beam Interactions - 723.2 Data Processing and Image Processing - 723 Computer Software, Data Handling and Applications - 709 Electrical Engineering, General - 531 Metallurgy and Metallography

DOI:10.1109/TMEE.2011.6199558

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 282>

 

Accession number:20110713664230

Title:Parallel two-step phase-shifting point-diffraction interferometry for microscopy based on a pair of cube beamsplitters

Authors:Gao, Peng (1); Yao, Baoli (1); Min, Junwei (1); Guo, Rongli (1); Zheng, Juanjuan (1); Ye, Tong (1); Harder, Irina (2); Nercissian, Vanusch (3); Mantel, Klaus (2)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (2) Max-Planck-Institute for the Science of Light, Germany; (3) Institute of Optics, Information and Photonics, University of Erlangen, Germany; (4) Graduate School of the Chinese Academy of Sciences, Beijing 100039, China

Corresponding author:Gao, P.

Source title:Optics Express

Abbreviated source title:Opt. Express

Volume:19

Issue:3

Issue date:January 31, 2011

Publication year:2011

Pages:1930-1935

Language:English

E-ISSN:10944087

Document type:Journal article (JA)

Publisher:Optical Society of America, 2010 Massachusetts Ave, NW, Washington, DC, DC 20036-1023, United States

Abstract:Parallel two-step phase-shifting point-diffraction interferometry for microscopy based on a pair of cube beamsplitters is proposed. The first 45&deg;-tilted cube beamsplitter splits object wave into two parallel copies: one copy is filtered by a pinhole in its Fourier plane to behave as reference wave, while the other one remains unchanged as object wave. The second cube beamsplitter combines the object and reference waves, and then split them together into two beams. Along with the two beams, two parallel phase-shifting interferograms are obtained in aid of polarization elements. Based on the proposed configuration, slightly-off-axis interferometry for microscopy is performed, which suppresses dc term by subtracting the two phase-shifting holograms from each other. The setup is highly stable due to its common-path configuration, and has been demonstrated to be suitable for measuring moving objects or dynamic processes. &copy; 2011 Optical Society of America.

Number of references:19

Main heading:Geometry

Controlled terms:Diffraction - Interferometry

Uncontrolled terms:Beamsplitters - Common-path - Dynamic process - Fourier planes - Interferograms - Moving objects - Object waves - Off-axis - Phase-shifting - Point diffraction interferometry  - Polarization elements - Reference waves - Two beams - Two phase

Classification code:711.1 Electromagnetic Waves in Different Media - 921 Mathematics - 941.4 Optical Variables Measurements

DOI:10.1364/OE.19.001930

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 283>

 

Accession number:20113114199159

Title:Research on measurement method of image motion of space camera based on optical correlator

Authors:Fan, Chao (1); Li, Yingcai (2); Fu, Hongliang (1); Liang, Yitao (1)

Author affiliation:(1) College of Information Science and Engineering, Henan University of Technology, Zhengzhou, Henan 450001, China; (2) Xi'an Institute of Optics and Precision Mechanics, Chinese Acad. of Sci., Xi'an, Shaanxi 710119, China

Corresponding author:Fan, C.(anfan2003@gmail.com)

Source title:Guangxue Xuebao/Acta Optica Sinica

Abbreviated source title:Guangxue Xuebao

Volume:31

Issue:7

Issue date:July 2011

Publication year:2011

Article number:0712006

Language:Chinese

ISSN:02532239

CODEN:GUXUDC

Document type:Journal article (JA)

Publisher:Chinese Optical Society, P.O. Box 80, Xi'an, 710068, China

Abstract:To measure the sub-pixel image motion which is caused by satellite attitude instability or vibration, the optical joint transform correlator (JTC) is used, which is based on using the auxiliary plane CCD to record the image motion in the focal plane of the satellite camera. The principle of this method is described, and the experimental platform is built. The measurement performance of the JTC is researched. The results show that the JTC can measure the sub-pixel image motion of the space camera entirely, and the accuracy is not variable with the contents of the input images. The measurement error submits the normal distribution with the mean of zero, and the root mean square (RMS) error is no more than 0.12 pixel under the conspicuous level of 0.05. This can meet the operating requirement of the space camera completely.

Number of references:11

Main heading:Cameras

Controlled terms:Normal distribution - Pixels - Remote sensing

Uncontrolled terms:Auxiliary plane - Experimental platform - Focal Plane - Image motion - Input image - Joint transform correlators - Measurement methods - Operating requirements - Optical correlators - Optical joint transform correlator  - Root-mean-square errors - Satellite attitude - Satellite cameras - Space cameras - Sub pixels

Classification code:731.1 Control Systems - 742.2 Photographic Equipment - 922.1 Probability Theory

DOI:10.3788/AOS201131.0712006

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 284>

 

Accession number:20110613652036

Title:Learning similarity with multikernel method

Authors:Tang, Yi (1); Li, Luoqing (1); Li, Xuelong (2)

Author affiliation:(1) Key Laboratory of Applied Mathematics, Faculty of Mathematics and Computer Science, Hubei University, Wuhan 430062, China; (2) Center for OPTical IMagery Analysis and Learning (OPTIMAL), State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Xi'an 710119, China

Corresponding author:Tang, Y.

Source title:IEEE Transactions on Systems, Man, and Cybernetics, Part B: Cybernetics

Abbreviated source title:IEEE Trans Syst Man Cybern Part B Cybern

Volume:41

Issue:1

Issue date:February 2011

Publication year:2011

Pages:131-138

Article number:5475279

Language:English

ISSN:10834419

CODEN:ITSCFI

Document type:Journal article (JA)

Publisher:Institute of Electrical and Electronics Engineers Inc., 445 Hoes Lane / P.O. Box 1331, Piscataway, NJ 08855-1331, United States

Abstract:In the field of machine learning, it is a key issue to learn and represent similarity. This paper focuses on the problem of learning similarity with a multikernel method. Motivated by geometric intuition and computability, similarity between patterns is proposed to be measured by their included angle in a kernel-induced Hilbert space. Having noticed that the cosine of such an included angle can be represented by a normalized kernel, it can be said that the task of learning similarity is equivalent to learning an appropriate normalized kernel. In addition, an error bound is also established for learning similarity with the multikernel method. Based on this bound, a boosting-style algorithm is developed. The preliminary experiments validate the effectiveness of the algorithm for learning similarity. &copy; 2010 IEEE.

Number of references:40

Main heading:Algorithms

Uncontrolled terms:Boosting - Error bound - Key issues - Learning similarity - Machine-learning - Multi-kernel

Classification code:723 Computer Software, Data Handling and Applications - 921 Mathematics

DOI:10.1109/TSMCB.2010.2048312

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 285>

 

Accession number:20114914584724

Title:Broadband terahertz spectroscopy

Authors:Fan, Wenhui (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China

Corresponding author:Fan, W.(fanwh@opt.ac.cn)

Source title:Chinese Optics Letters

Abbreviated source title:Chin. Opt. Lett.

Volume:9

Issue:11

Issue date:November 2011

Publication year:2011

Article number:110008

Language:English

ISSN:16717694

Document type:Journal article (JA)

Publisher:Science Press, 18,Shuangqing Street,Haidian, Beijing, 100085, China

Abstract:An overview of the major techniques to generate and detect THz radiation so far, especially the major approaches to generate and detect coherent ultra-short THz pulses using ultra-short pulsed laser, has been presented. And also, this paper, in particularly, focuses on broadband THz spectroscopy and addresses on a number of issues relevant to generation and detection of broadband pulsed THz radiation as well as broadband time-domain THz spectroscopy (THz-TDS) with the help of ultra-short pulsed laser. The time-domain waveforms of coherent ultra-short THz pulses from photoconductive antenna excited by femtosecond laser with different pulse durations and their corresponding Fourier-transformed spectra have been obtained via the numerical simulation of ultrafast dynamics between femtosecond laser pulse and photoconductive material. The origins of fringes modulated on the top of broadband amplitude spectrum, which is measured by electric-optic detector based on thin nonlinear crystal and extracted by fast Fourier transformation, have been analyzed and the major solutions to get rid of these fringes are discussed. &copy;2011 Chinese Optics Letters.

Number of references:39

Main heading:Terahertz spectroscopy

Controlled terms:Excitons - Fourier analysis - Fourier transforms - Microwave antennas - Photoconductivity - Pulsed lasers - Terahertz waves - Time domain analysis - Ultrafast lasers - Ultrashort pulses

Uncontrolled terms:Amplitude spectra - Femto-second laser - Femtosecond laser pulse - Nonlinear crystals - Photoconductive antennas - Photoconductive materials - Pulse durations - THz pulse - THz radiation - Thz spectroscopy  - THz-TDS - Time domain - Time-domain waveforms - Ultra-fast dynamics

Classification code:931.1 Mechanics - 921.3 Mathematical Transformations - 921 Mathematics - 752 Sound Devices, Equipment and Systems - 931.3 Atomic and Molecular Physics - 751 Acoustics, Noise. Sound - 741.1 Light/Optics - 716 Telecommunication; Radar, Radio and Television - 711 Electromagnetic Waves - 744.1 Lasers, General

DOI:10.3788/COL201109.110008

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 286>

 

Accession number:20112013977097

Title:All-optical wavelength multicasting exploiting cross-phase modulation in a dispersion-flattened nonlinear photonic crystal fiber

Authors:Hui, Z.Q. (1); Zhang, J.G. (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (2) Xi'an Institute of Posts and Telecommunications, Xi'an 710061, China

Corresponding author:Hui, Z. Q.(zqhui@opt.ac.cn)

Source title:Laser Physics

Abbreviated source title:Laser Phys.

Volume:21

Issue:3

Issue date:March 2011

Publication year:2011

Pages:512-518

Language:English

ISSN:1054660X

E-ISSN:15556611

Document type:Journal article (JA)

Publisher:Maik Nauka-Interperiodica Publishing, Profsoyuznaya Ul 90, Moscow, 117997, Russia

Abstract:An all-optical wavelength multicasting scheme with tunable output wavelength and channel numbers has been proposed and demonstrated based on cross-phase modulation (XPM) in a dispersion-flattened highly nonlinear photonic crystal fiber. We show that the input signal wavelength can be simultaneously converted to four different wavelengths by filtering the broadened sideband of the continuous-wave (CW) probe beams. The experiments are carried out to investigate into the wavelength tunability, and exploit the dynamic characteristics with variable input signal powers, the ability of multicasting channels scalable, and the relationship between the multicasting signal qualities with variable optical band-pass filter (OBPF) bandwidth. The results indicate that the proposed wavelength multicasting scheme has the advantages of simple structure, efficient operation in a wide wavelength range, as well as transparent to bit rates. Moreover, the system can be upgraded to generate more multicasting channels by increasing the number of CW probe beams. &copy; 2011 Pleiades Publishing, Ltd.

Number of references:24

Main heading:Multicasting

Controlled terms:Bandpass filters - Crystal whiskers - Dispersion (waves) - Phase modulation - Photonic crystal fibers - Photonic crystals - Probes - Wavelength

Uncontrolled terms:All-optical - Bit rates - Channel number - Continuous waves - Cross-phase modulations - Dynamic characteristics - Highly nonlinear photonic crystal fiber - Input signal - Nonlinear photonic crystal fiber - Optical bandpass filters  - Output wavelengths - Probe beam - Signal quality - Simple structures - Wavelength multicasting - Wavelength ranges - Wavelength tunability

Classification code:951 Materials Science - 944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments - 943 Mechanical and Miscellaneous Measuring Instruments - 942 Electric and Electronic Measuring Instruments - 941 Acoustical and Optical Measuring Instruments - 933.1 Crystalline Solids - 801.4 Physical Chemistry - 718 Telephone Systems and Related Technologies; Line Communications - 717 Optical Communication - 716 Telecommunication; Radar, Radio and Television - 711.1 Electromagnetic Waves in Different Media - 711 Electromagnetic Waves - 703.2 Electric Filters

DOI:10.1134/S1054660X11050094

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

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Accession number:20112514082817

Title:Multiple incoherent gray photorefractive spatial solitons

Authors:Lu, Keqing (1); Zhang, Yuhong (2); Tian, Ning (1); Li, Kehao (2); Zhang, Yiqi (2); Zhang, Xianfeng (1); Miao, Changyun (1); Zhang, Yanpeng (4); Xu, Jingjun (5)

Author affiliation:(1) School of Information and Communication Engineering, Tianjin Polytechnic University, Tianjin 300160, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academic of Sciences, Xi'an 710119, China; (3) Graduate School of Chinese Academic of Sciences, Beijing 100039, China; (4) Department of Electronic Science and Technology, Xi'an Jiaotong University, Xi'an 710049, China; (5) Department of Physics, Nankai University, Tianjin 300071, China

Corresponding author:Lu, K.(kqlu@opt.cn)

Source title:Optical and Quantum Electronics

Abbreviated source title:Opt Quantum Electron

Volume:42

Issue:5

Issue date:May 2011

Publication year:2011

Pages:277-284

Language:English

ISSN:03068919

E-ISSN:1572817X

CODEN:OQELDI

Document type:Journal article (JA)

Publisher:Springer New York, 233 Springer Street, New York, NY 10013-1578, United States

Abstract:We show that an even-number sequence of multiple incoherent gray photorefractive spatial screening solitons is possible. When the external voltage is small, only an incoherent Y-junction photorefractive spatial screening soliton is generated, corresponding to the lowest order in the even-number incoherent soliton sequence. When the external voltage is increased, the incoherent gray soliton beam splits into an even-number sequence of multiple incoherent gray photorefractive spatial screening solitons. For a given physical system such an even-number sequence of multiple incoherent gray photorefractive spatial screening solitons is obtained by either increasing the external voltage and decreasing the full width half maximum (FWHM) of the beam's intensity or increasing the external voltage and decreasing the beam's grayness. &copy; 2011 Springer Science+Business Media, LLC.

Number of references:22

Main heading:Solitons

Controlled terms:Photoreactivity

Uncontrolled terms:External voltages - Full width half maximum - Gray solitons - Incoherent solitons - Photo-refractive - Photorefractive effect - Physical systems - Spatial screening solitons - Spatial solitons - Y-junctions

Classification code:741.1 Light/Optics - 931.3 Atomic and Molecular Physics

DOI:10.1007/s11082-011-9450-2

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 288>

 

Accession number:20110313592305

Title:General expression of optic path difference of reflecting rotating Fourier transform spectrometer

Authors:Zhou, Jin-Song (1); Xiangli, Bin (1); Wei, Ru-Yi (2); Jing, Juan-Juan (2)

Author affiliation:(1) Academy of Opto-Electronics, Chinese Academy of Sciences, Beijing 100190, China; (2) Key Laboratory of Spectral Imaging Technology, Xi'an Institute of Optics and Precision Mechanics of Chinese Academy of Sciences, Chinese Academy of Sciences, Xi'an 710119, China

Corresponding author:Wei, R.-Y.(weiruyi5@yahoo.com.cn)

Source title:Guang Pu Xue Yu Guang Pu Fen Xi/Spectroscopy and Spectral Analysis

Abbreviated source title:Guang Pu Xue Yu Guang Pu Fen Xi

Volume:31

Issue:1

Issue date:January 2011

Publication year:2011

Pages:263-266

Language:Chinese

ISSN:10000593

CODEN:GYGFED

Document type:Journal article (JA)

Publisher:Science Press, 18,Shuangqing Street,Haidian, Beijing, 100085, China

Abstract:The principle of reflecting rotating Fourier transform spectrometer was introduced in the present paper. Based on the Malus law and reflecting characteristic of cube corner, the optic path difference of reflecting rotating Fourier transform spectrometer was analyzed and calculated by choosing the center of rotating mirror as a reference point of the aplanatic surface of incidence beam and return beam. General expression of optic path difference at any time and maximal optic path difference of reflecting rotating Fourier transform spectrometer was presented. The factors that influence the maximal optic path difference and the period of optic path difference were analyzed. The results provide a theoretical guidance for design and manufacture of reflecting rotating Fourier transform spectrometer.

Number of references:7

Main heading:Fourier transforms

Controlled terms:Bolometers - Mirrors - Rotation - Spacecraft instruments - Spectrometers - Spectrometry

Uncontrolled terms:Fourier transform spectrometers - General expression - Path differences - Reference points - Rotating mirrors

Classification code:601.1 Mechanical Devices - 655.1 Spacecraft, General - 741.3 Optical Devices and Systems - 921.3 Mathematical Transformations - 944.7 Radiation Measuring Instruments

DOI:10.3964/j.issn.1000-0593(2011)01-0263-04

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 289>

 

Accession number:20113714332403

Title:A new adaptive background correction method based on pinhole image analysis in optical system modulation transfer function measurement

Authors:Duan, Yaxuan (1); Chen, Yongquan (1); Zhao, Jianke (1); Li, Kun (1); Long, Jiangbo (1)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, Shaanxi 710119, China

Corresponding author:Duan, Y.(6216366@163.com)

Source title:Guangxue Xuebao/Acta Optica Sinica

Abbreviated source title:Guangxue Xuebao

Volume:31

Issue:8

Issue date:August 2011

Publication year:2011

Article number:0812008

Language:Chinese

ISSN:02532239

CODEN:GUXUDC

Document type:Journal article (JA)

Publisher:Chinese Optical Society, P.O. Box 80, Xi'an, 710068, China

Abstract:A new adaptive background correction method based on pinhole image analysis in optical system modulation transfer function (MTF) measurement is proposed. The pinhole image is got from the CCD, and the line spread function is computed from it. The MTF is got from the adaptive background correction to the line spread function. Compared with the traditional background correction method, it is unrelated to the change of ambience illumination, and the measurement accuracy is improved. Standard lens and aberrated lens are tested to prove the validity of the adaptive background method. The maximum difference between the test results of standard lens and the academic results is 0.01. Compared with Optikos MTF testing results, the maximum difference is 0.015. The maximum difference between test results of aberrated lens and Optikos MTF testing results is 0.013. The test results show that the adaptive background correction method is practical to the MTF tests of most optical lenses.

Number of references:11

Main heading:Optical transfer function

Controlled terms:Electromagnetic wave attenuation - Image analysis - Lenses - Modulation - Optical systems

Uncontrolled terms:Aberrated lens - Background correction - Background correction methods - Line spread functions - Measurement accuracy - Modulation transfer function measurements - MTF test - Optical lens - Test results - Testing results

Classification code:711 Electromagnetic Waves - 716 Telecommunication; Radar, Radio and Television - 717 Optical Communication - 718 Telephone Systems and Related Technologies; Line Communications - 741 Light, Optics and Optical Devices

DOI:10.3788/AOS201131.0812008

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 290>

 

Accession number:20122715188507

Title:Image denoising via weight regression

Authors:Tang, Yi (1); Yuan, Yuan (1); Yan, Pingkun (1); Li, Xuelong (1); Zhou, Hui (2); Li, Luoqing (2)

Author affiliation:(1) Center for OPTical IMagery Analysis and Learning (OPTIMAL), Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, Shaanxi, China; (2) Faculty of Mathematics and Computer Science, Hubei University, Wuhan, Hubei, China

Corresponding author:Tang, Y.

Source title:1st Asian Conference on Pattern Recognition, ACPR 2011

Abbreviated source title:Asian Conf. Pattern Recogn., ACPR

Monograph title:1st Asian Conference on Pattern Recognition, ACPR 2011

Issue date:2011

Publication year:2011

Pages:417-421

Article number:6166565

Language:English

ISBN-13:9781457701221

Document type:Conference article (CA)

Conference name:1st Asian Conference on Pattern Recognition, ACPR 2011

Conference date:November 28, 2011 - November 28, 2011

Conference location:Beijing, China

Conference code:90727

Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States

Abstract:The core of image denoising is making a trade-off between removing noise and preserving details of noised image. To remove noise, the denoising algorithm based on K-SVD is employed in this paper. Though the power of such denoising algorithm has been verified by a mount of experiments, many meaningful details of noised image cannot be well maintained. To preserve details of noised image, therefore, local structure information of noised image which is described by the steering kernel is considered in image denoising. In fact, a weighted regression method where the weights are defined by the steering kernel is used to recover the meaningful details of noised image. Experimental results have shown that more meaningful details of noised image are preserved by the proposed algorithm. &copy; 2011 IEEE.

Number of references:18

Main heading:Image denoising

Controlled terms:Algorithms - Pattern recognition - Regression analysis

Uncontrolled terms:De-noising algorithm - Image de-nosing - K-svd - Local structure - REmove noise - weight regression - Weighted regression

Classification code:716 Telecommunication; Radar, Radio and Television - 716.1 Information Theory and Signal Processing - 723 Computer Software, Data Handling and Applications - 723.2 Data Processing and Image Processing - 921 Mathematics - 922.2 Mathematical Statistics

DOI:10.1109/ACPR.2011.6166565

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

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Accession number:20112013982268

Title:The tempo-spatially modulated polarization atmosphere Michelson interferometer

Authors:Zhang, Chun Min (1); Zhu, Hua Chun (1); Zhao, Baochang (3)

Author affiliation:(1) School of Science, Xi'an Jiaotong University, Xi'an 710049, China; (2) Non-equilibrium Condensed Matter and Quantum Engineering Laboratory, Key Laboratory of Ministry of Education, Xi'an 710049, China; (3) Xi'an Institute of Optics and Precision Mechanics, Academia Sinica, Xi'an 710119, China

Corresponding author:Zhang, C. M.(zcm@mail.xjtu.edu.cn)

Source title:Optics Express

Abbreviated source title:Opt. Express

Volume:19

Issue:10

Issue date:May 9, 2011

Publication year:2011

Pages:9626-9635

Language:English

E-ISSN:10944087

Document type:Journal article (JA)

Publisher:Optical Society of America, 2010 Massachusetts Ave, NW, Washington, DC, DC 20036-1023, United States

Abstract:A space-based tempo-spatially modulated polarization atmosphere Michelson interferometer (TSMPAMI) is described. It uses the relative movement between the TSMPAMI and the measured target to change optical path difference. The acquisition method of interferogram is presented. The atmospheric temperatures and horizontal winds can be derived from the optical observations. The measurement errors of the winds and temperatures are discussed through simulations. In the presence of small-scale structures of the atmospheric fields, the errors are found to be significantly influenced by the mismatch of the scenes observed by the adjacent CCD sub-areas aligned along the orbiter's track during successive measurements due to the orbital velocity and the exposure time. For most realistic conditions of the orbit and atmosphere, however, the instrument is proven suitable for measuring the atmospheric parameters. &copy; 2011 Optical Society of America.

Number of references:17

Main heading:Measurement errors

Controlled terms:Michelson interferometers - Optical instruments - Polarization

Uncontrolled terms:Atmospheric fields - Atmospheric parameters - Exposure-time - Horizontal winds - Interferograms - Optical observations - Optical path difference - Orbital velocities - Realistic conditions - Relative movement  - Small-scale structures - Space-based - Sub-areas

Classification code:711.1 Electromagnetic Waves in Different Media - 922 Statistical Methods - 941.3 Optical Instruments

DOI:10.1364/OE.19.009626

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 292>

 

Accession number:20120314693189

Title:Accurate measuring temperature with infrared thermal imager in the unstable condition of ambient temperature

Authors:Wang, Jing (1); Qu, En-Shi (1); Cao, Jian-Zhong (1)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Science, Xi'an 710119, China

Corresponding author:Wang, J.

Source title:Proceedings of SPIE - The International Society for Optical Engineering

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:8201

Monograph title:2011 International Conference on Optical Instruments and Technology: Optoelectronic Measurement Technology and Systems

Issue date:2011

Publication year:2011

Article number:82011T

Language:English

ISSN:0277786X

CODEN:PSISDG

ISBN-13:9780819488428

Document type:Journal article (JA)

Conference name:2011 International Conference on Optical Instruments and Technology: Optoelectronic Measurement Technology and Systems

Conference date:November 6, 2011 - November 9, 2011

Conference location:Beijing, China

Conference code:88094

Sponsor:China Instrument and Control Society (CIS); Chinese Optical Society (COS); The Society of Photo-Optical Instrumentation Engineers (SPIE)

Publisher:SPIE, P.O. Box 10, Bellingham, WA 98227-0010, United States

Abstract:The infrared thermal imaging systems are widely used for distinguishing target radiation temperature difference and they can also be used to measure the absolute temperature of the target. There may be great difference between the true value and the measurement results in the actual application of the infrared thermal imaging systems, just because of the unstable condition and the lack of compensation of the imager's own heat radiation. In order to obtain the accurate temperature of the target in some special conditions, such as aircraft internal and pilotless platform, we present a stationary infrared thermal imaging system to gather the goal gradation images and a method to compensate the influence of the imager's own heat radiation and the unstable condition. In radiation calibration experiment, we establish corresponding relationships between the gradation difference and the temperature difference by using a goal blackbody and a cooperation calibration blackbody between 0&deg;C and 150&deg;C. We also analysis the relationships mentioned above under the normal temperature and the high temperature separately. The results show that the proposed method may be useful in increasing the temperature measurement precision. &copy; 2011 SPIE.

Number of references:6

Main heading:Technology

Controlled terms:Calibration - Heat radiation - Imaging systems - Infrared imaging - Optical instruments - Temperature measurement

Uncontrolled terms:blackbody - Calibration blackbody - High temperature - Infrared thermal imager - infrared thermal imaging system - Infrared thermal imaging systems - Measurement results - Measuring temperature - Radiation calibration - Radiation temperature  - Temperature differences - unstable condition

Classification code:944.6 Temperature Measurements - 944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments - 943 Mechanical and Miscellaneous Measuring Instruments - 942 Electric and Electronic Measuring Instruments - 941.3 Optical Instruments - 941 Acoustical and Optical Measuring Instruments - 901 Engineering Profession - 746 Imaging Techniques - 741.3 Optical Devices and Systems - 741 Light, Optics and Optical Devices - 641.2 Heat Transfer

DOI:10.1117/12.906280

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 293>

 

Accession number:20111313874968

Title:Athermalization design of wide temperature range for hybrid refractive/diffractive infrared objective

Authors:Chen, Xiao (1); Yang, Jianfeng (1); Ma, Xiaolong (1); Bai, Yu (1); He, Jike (3); He, Jianwei (1)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Science, Xi'an 710119, China; (2) Graduate School of the Chinese Academy of Sciences, Beijing 100039, China; (3) School of Technical Physics, Xidian University, Xi'an 710071, China

Corresponding author:Chen, X.(chenxiao.45678@163.com)

Source title:Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering

Abbreviated source title:Hongwai yu Jiguang Gongcheng Infrared Laser Eng.

Volume:40

Issue:1

Issue date:January 2011

Publication year:2011

Pages:79-82

Language:Chinese

ISSN:10072276

Document type:Journal article (JA)

Publisher:Chinese Society of Astronautics, P.O. Box 225-32, Tianjin, 300192, China

Abstract:Hybrid refractive-diffractive design offers a new approach for athermalization design in wide temperature range. In this paper, the working wavelength was in 8-12 &mu;m; the full field of view was 9.15&deg;; the efficient focal length(EFL) was 100 mm; the relative aperture was 1:1.5; the total optical length was 128 mm and the back focal length(BFL) was 10.5 mm. The system was designed with three lenses and two kinds of material-Ge and ZnSe. It was made simple, low mass and high image quality by introducing diffraction surface and even aspheric surfaces. The evaluation of the system was given in the temperature range -80-160&deg;C. The results show that the modulation transformation function (MTF) is near to 0.6 at the spatial frequency of 12.5 lp/mm which is near to the diffractive limitation. It is compatible with staring focal plane array which has a format of 320 &times; 240 and the pixel pitch of 40 &mu;m.

Number of references:11

Main heading:Surfaces

Controlled terms:Aspherics - Breath controlled devices - Design - Focusing - Germanium - Image quality - Optical systems

Uncontrolled terms:Aspheric surfaces - Athermalization - Back focal length - DOE - Focal lengths - Full-field - High image quality - Infrared objectives - Infrared optical systems - Low mass  - New approaches - Optical length - Pixel pitch - Spatial frequency - Temperature range - Transformation functions

Classification code:408 Structural Design - 461.5 Rehabilitation Engineering and Assistive Technology - 741 Light, Optics and Optical Devices - 804 Chemical Products Generally - 931 Classical Physics; Quantum Theory; Relativity - 951 Materials Science

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 294>

 

Accession number:20114914573652

Title:Collaborative Kalman filters for vehicle tracking

Authors:Cao, Xianbin (1); Shi, Zhengrong (1); Yan, Pingkun (3); Li, Xuelong (3)

Author affiliation:(1) University of Science and Technology of China, Hefei, 230026, China; (2) BeiHang University, Beijing, 100083, China; (3) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, Shanxi, China

Corresponding author:Cao, X.

Source title:IEEE International Workshop on Machine Learning for Signal Processing

Abbreviated source title:IEEE Int. Workshop  Mach. Learn. Signal Proces.

Monograph title:2011 IEEE International Workshop on Machine Learning for Signal Processing - Proceedings of MLSP 2011

Issue date:2011

Publication year:2011

Article number:6064581

Language:English

ISBN-13:9781457716232

Document type:Conference article (CA)

Conference name:21st IEEE International Workshop on Machine Learning for Signal Processing, MLSP 2011

Conference date:September 18, 2011 - September 21, 2011

Conference location:Beijing, China

Conference code:87499

Sponsor:IEEE; IEEE Signal Processing Society

Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States

Abstract:Airborne vehicle tracking system is receiving increasing attention because of its high mobility and large surveillance scope. However, tracking multiple vehicles simultaneously on airborne platform is a challenging problem, owing to uncertain vehicle motion and visible frame-to-frame jitter caused by camera vibration. To address these problems, a new collaborative tracking framework is proposed. The framework consists of two level tracking processes: to track vehicles as groups, the higher level builds the relevance network and divides target vehicles into different groups; the relevance is calculated based on the status information of vehicles obtained by the lower level. This kind of group tracking takes into account the relevance of vehicles and reduces the impact of camera vibration, so the proposed method is applicable for multi-vehicle tracking in airborne videos. Experimental results demonstrate that the proposed method has better performance in terms of the tracking speed and accuracy compared to other existing approaches. &copy; 2011 IEEE.

Number of references:12

Main heading:Target tracking

Controlled terms:Automobile frames - Cameras - Interfaces (computer) - Jitter - Kalman filters - Learning systems - Vehicles

Uncontrolled terms:Airborne platforms - Airborne vehicles - Airborne video - Collaborative tracking - Group tracking - High mobility - Multi-target tracking - Multi-vehicles - Target vehicles - Track vehicles  - Tracking process - Tracking speed - Vehicle motion

Classification code:731.5 Robotics - 722.2 Computer Peripheral Equipment - 718 Telephone Systems and Related Technologies; Line Communications - 742.2 Photographic Equipment - 717 Optical Communication - 663.2 Heavy Duty Motor Vehicle Components - 432 Highway Transportation - 716 Telecommunication; Radar, Radio and Television

DOI:10.1109/MLSP.2011.6064581

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 295>

 

Accession number:20113614302192

Title:High-repetition-frequency high-voltage narrow pulse source achieved by frequency superposition

Authors:Zhang, Wei (1); Liu, Baiyu (2); Ruan, Chi (2); Bai, Yonglin (2); Ouyang, Xian (2); Gou, Yongsheng (1)

Author affiliation:(1) Key Laboratory of Ultra-Fast Photoeletric Diagnostics Technology, Xi'an Institute of Optics and Precision Mechanics, Chinese Acad. of Sci., Xi'an 710119, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Acad. of Sci., Xi'an 710119, China; (3) Graduate University of the Chinese Acad. of Sci., Beijing 100049, China

Corresponding author:Zhang, W.(zhangwei_830517@163.com)

Source title:Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering

Abbreviated source title:Hongwai yu Jiguang Gongcheng Infrared Laser Eng.

Volume:40

Issue:7

Issue date:July 2011

Publication year:2011

Pages:1257-1262

Language:Chinese

ISSN:10072276

Document type:Journal article (JA)

Publisher:Chinese Society of Astronautics, P.O. Box 225-32, Tianjin, 300192, China

Abstract:The traditional method to achieve high-repetition-frequency high-voltage narrow pulsed source is subjected to the device performance, thus the new idea of frequency superposition was put forward. Based on the theories of ultra-fast electronics and frequency superposition, multi-channel high-voltage narrow pulses were produced by MARX circuits. Through the synchronous system, the delay of multi-channel trigger signals were controlled and the multi-channel pulses were coupled into one way to achieve high- repetition-frequency high-voltage narrow pulse output. The two output pulses from the MARX circuits were 2.56 kV in amplitude, 7.13 ns in width and 32 kHz in repetition frequency. While the coupled pulse was 2.46 kV, 7.49 ns and 64 kHz in amplitude, width and repetition frequency, respectively. The idea is confirmed by experimentally superposing frequencies of two pulses with the result of doubled output pulse frequency. This method can be extended to more pulses to obtain higher frequency.

Number of references:9

Main heading:Atmospherics

Uncontrolled terms:Frequency superposition - High-repetition-frequency - MARX circuit - Multi-channel - Synchronization control

Classification code:701.1 Electricity: Basic Concepts and Phenomena

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 296>

 

Accession number:20112714112369

Title:New measurement method of the sub-pixel image motion based on optical correlator

Authors:Yi, Hongwei (1); Li, Yingcai (1); Wen, Desheng (1); Li, Xuyang (1); Ma, Zhen (1)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710068, China; (2) Graduate University of Chinese Academy of Sciences, Beijing 100039, China

Corresponding author:Yi, H.(yi_hongwei@126.com)

Source title:Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering

Abbreviated source title:Hongwai yu Jiguang Gongcheng Infrared Laser Eng.

Volume:40

Issue:4

Issue date:April 2011

Publication year:2011

Pages:718-722

Language:Chinese

ISSN:10072276

Document type:Journal article (JA)

Publisher:Chinese Society of Astronautics, P.O. Box 225-32, Tianjin, 300192, China

Abstract:Joint transform correlator (JTC) is an effective way to measure the sub-pixel image motion which is caused by instability or vibration of satellite camera. The measurement accuracy is the key factor to determine its critical performance index. On the basis of the principle of image motion measurement with JTC, a method using a Fourier optical processor in combination with an electronic system to implement the function of the JTC was proposed. The upsampled version of a small region around cross-correlation peak was computed by digital processing unit, and the measurement accuracy of the cross-correlation peak was improved. The simulation test results show that, when upsampling factor k&ge;10, the measurement accuracy of 0.045 pixel can be achieved for 128 &times; 128 input image with SNR&ge;20 dB. Within 0-60 pixels displacement, the measurement accuracy can be controlled at about 0.05 pixel in different input scenes. The new method can improve the measurement performance effectively and reduce the complexity of the measurement system.

Number of references:8

Main heading:Pixels

Controlled terms:Image coding - Measurements

Uncontrolled terms:Cross correlations - Electronic systems - Fourier optical processors - Image motion - Input image - Joint transform correlators - JTC - Key factors - Measurement accuracy - Measurement system  - New Measurement Method - Optical correlators - Performance indices - Satellite cameras - Simulation tests - Small region - Sub pixels - Upsampling

Classification code:723.5 Computer Applications - 741 Light, Optics and Optical Devices - 941 Acoustical and Optical Measuring Instruments - 942 Electric and Electronic Measuring Instruments - 943 Mechanical and Miscellaneous Measuring Instruments - 944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 297>

 

Accession number:20105013481058

Title:Two synchronized operating modes of femtosecond and picosecond pulses in a dual-wavelength laser

Authors:Zhu, Changjun (1); He, Junfang (2); Zhai, Xuejun (1); Xue, Bing (1); Zhang, Chonghui (1)

Author affiliation:(1) Department of Physics, School of Science, Xi'an Polytechnic University, Xi'an 710048, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China

Corresponding author:Zhu, C.(cjzhu@xpu.edu.cn)

Source title:Materials Science Forum

Abbreviated source title:Mater. Sci. Forum

Volume:663-665

Monograph title:Optoelectronic Materials

Issue date:2011

Publication year:2011

Pages:284-287

Language:English

ISSN:02555476

CODEN:MSFOEP

ISBN-10:0878492119

ISBN-13:9780878492114

Document type:Conference article (CA)

Conference name:2010 International Conference on Optical, Electronic and Electrical Materials, OEEM2010

Conference date:August 1, 2010 - August 4, 2010

Conference location:Kunming, China

Conference code:82669

Sponsor:National Science Foundation of China; Trans Tech Publications

Publisher:Trans Tech Publications Ltd, Laubisrutistr.24, Stafa-Zuerich, CH-8712, Switzerland

Abstract:Two synchronized operating modes of femtosecond and picosecond pulses, cross mode-locking and multi-pulse operating, are presented in a two-beam-pumped dual-wavelength Ti:sapphire laser. For the cross mode-locking mode, synchronized laser pulses of 37.5 fs and 0.891ps, with a timing jitter of 139 fs, are obtained in the femtosecond cavity and picosecond cavity, respectively. For the multi-pulse mode, pulses of 35 fs are obtained in the femtosecond cavity, whereas, multi-pulse mode appears in the picosecond cavity, with a pulse envelope width of 1.06 ps. The two operating modes can be switched from one to the other, dominated mainly by the mutual interaction between cross-phase modulation and self-amplitude modulation. &copy; (2011) Trans Tech Publications.

Number of references:8

Main heading:Laser mode locking

Controlled terms:Mode-locked fiber lasers - Optoelectronic devices - Phase modulation - Pumping (laser) - Synchronization - Timing jitter - Ultrashort pulses

Uncontrolled terms:Cross-phase modulations - Dual wavelength laser - Dual-wavelength - Femtoseconds - Modelocking - Multipulses - Mutual interaction - Operating modes - Pico-second pulse - Picoseconds  - Pulse envelopes - Synchronized laser - Ti: Sapphire laser

Classification code:716 Telecommunication; Radar, Radio and Television - 717 Optical Communication - 717.2 Optical Communication Equipment - 718 Telephone Systems and Related Technologies; Line Communications - 744.1 Lasers, General - 961 Systems Science

DOI:10.4028/www.scientific.net/MSF.663-665.284

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 298>

 

Accession number:20114714545068

Title:Fuzzy logic controller design based on genetic algorithm for DC motor

Authors:Liu, Chun-Juan (1); Li, Bian-Xia (1); Yang, Xiao-Xu (1)

Author affiliation:(1) Photoelectric Measurement and Control Technology Research Department, Xi'An Institute of Optics and Precision Mechanics, Xi'an, China

Corresponding author:Liu, C.-J.(iamafishsi@126.com)

Source title:2011 International Conference on Electronics, Communications and Control, ICECC 2011 - Proceedings

Abbreviated source title:Int. Conf. Electron., Commun. Control, ICECC - Proc.

Monograph title:2011 International Conference on Electronics, Communications and Control, ICECC 2011 - Proceedings

Issue date:2011

Publication year:2011

Pages:2662-2665

Article number:6067555

Language:English

ISBN-13:9781457703218

Document type:Conference article (CA)

Conference name:2011 International Conference on Electronics, Communications and Control, ICECC 2011

Conference date:September 9, 2011 - September 11, 2011

Conference location:Ningbo, China

Conference code:87394

Sponsor:Ningbo University

Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States

Abstract:This paper propose a genetic based fuzzy logic controller to regulate the speed of separately excited DC motor. The fuzzy membership function and rules are optimized based on genetic algorithm. The DC motor speed control system is modeled and simulated in MATLAB/SIMULINK. Simulation results show that the optimized fuzzy logic controller not only has no overshoot, minimum settling times and vibrations, but also demonstrate high performance for real-time control over a wide range of operating conditions. &copy; 2011 IEEE.

Number of references:6

Main heading:Controllers

Controlled terms:Computer control systems - DC motors - Electric drives - Fuzzy logic - Genetic algorithms - Membership functions - Optimization - Real time control

Uncontrolled terms:DC motor drive - Dc motor speed control - Fuzzy logic controller - Fuzzy logic controller design - Fuzzy logic controllers - Fuzzy membership function - Operating condition - Separately excited dc motors - Settling time - Simulation

Classification code:921.5 Optimization Techniques - 921 Mathematics - 732.1 Control Equipment - 732 Control Devices - 731.1 Control Systems - 731 Automatic Control Principles and Applications - 721.1 Computer Theory, Includes Formal Logic, Automata Theory, Switching Theory, Programming Theory - 705.3.2 DC Motors - 705 Electric Generators and Motors

DOI:10.1109/ICECC.2011.6067555

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 299>

 

Accession number:20114814561188

Title:Exploiting local coherent patterns for unsupervised feature ranking

Authors:Huang, Qinghua (1); Tao, Dacheng (2); Li, Xuelong (3); Jin, Lianwen (1); Wei, Gang (1)

Author affiliation:(1) School of Electronic and Information Engineering, South China University of Technology, Guangzhou 510640, China; (2) Centre for Quantum Computation and Intelligent Systems, Faculty of Engineering and Information Technology, University of Technology, Sydney, NSW 2007, Australia; (3) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China

Corresponding author:Huang, Q.(qhhuang@scut.edu.cn)

Source title:IEEE Transactions on Systems, Man, and Cybernetics, Part B: Cybernetics

Abbreviated source title:IEEE Trans Syst Man Cybern Part B Cybern

Volume:41

Issue:6

Issue date:December 2011

Publication year:2011

Pages:1471-1482

Article number:5887432

Language:English

ISSN:10834419

CODEN:ITSCFI

Document type:Journal article (JA)

Publisher:Institute of Electrical and Electronics Engineers Inc., 445 Hoes Lane / P.O. Box 1331, Piscataway, NJ 08855-1331, United States

Abstract:Prior to pattern recognition, feature selection is often used to identify relevant features and discard irrelevant ones for obtaining improved analysis results. In this paper, we aim to develop an unsupervised feature ranking algorithm that evaluates features using discovered local coherent patterns, which are known as biclusters. The biclusters (viewed as submatrices) are discovered from a data matrix. These submatrices are used for scoring relevant features from two aspects, i.e., the interdependence of features and the separability of instances. The features are thereby ranked with respect to their accumulated scores from the total discovered biclusters before the pattern classification. Experimental results show that this proposed method can yield comparable or even better performance in comparison with the well-known Fisher score, Laplacian score, and variance score using three UCI data sets, well improve the results of gene expression data analysis using gene ontology annotation, and finally demonstrate its advantage of unsupervised feature ranking for high-dimensional data. &copy; 2006 IEEE.

Number of references:33

Main heading:Feature extraction

Controlled terms:Gene expression - Matrix algebra - Ontology

Uncontrolled terms:Analysis results - Biclusters - Data matrices - Data sets - Feature ranking - Fisher score - Gene expression data analysis - Gene ontology - High dimensional data - Laplacians  - Sub-matrices

Classification code:461.8.1 Genetic Engineering - 716 Telecommunication; Radar, Radio and Television - 723 Computer Software, Data Handling and Applications - 903 Information Science - 921.1 Algebra

DOI:10.1109/TSMCB.2011.2151256

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 300>

 

Accession number:20115214631759

Title:Extending the depth of field of incoherent imaging system through wave-front coding by using composite phase masks

Authors:Zhao, Hui (1); Yi, Hongwei (1); Li, Yingcai (1)

Author affiliation:(1) Space Optics Lab, Xi'an Institute of Optics and Precision Mechanics, China; (2) State Key Laboratory of Transient Optics and Photonics, No.17, Xinxi Road, Xi'an, 710119, China

Corresponding author:Zhao, H.(zhaohui@opt.ac.cn)

Source title:Proceedings of SPIE - The International Society for Optical Engineering

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:8004

Monograph title:MIPPR 2011: Pattern Recognition and Computer Vision

Issue date:2011

Publication year:2011

Article number:80040F

Language:English

ISSN:0277786X

CODEN:PSISDG

ISBN-13:9780819485786

Document type:Conference article (CA)

Conference name:MIPPR 2011: Pattern Recognition and Computer Vision

Conference date:November 4, 2011 - November 6, 2011

Conference location:Guilin, China

Conference code:87789

Sponsor:Natl. Key Lab. Sci. Technol. Multi-spectral Inf. Process.; Huazhong University of Science and Technology; Guilin University of Electronic Technology

Publisher:SPIE, P.O. Box 10, Bellingham, WA 98227-0010, United States

Abstract:Since 1995 when wave-front coding was first proposed by Dowski and Cathey, this technique has become a powerful tool to extend the DOF (depth of field) of incoherent imaging systems. By introducing a phase mask to the aperture plane, the optical transfer function (OTF) can be made insensitive to defocus and thus the key to this technique lies in the design of suitable phase masks. So far, many phase masks have been proposed to achieve the goal of DOF extension. In this paper, a new kind of phase mask, called composite phase mask, is designed by combining existing phase masks. With the optimized parameters, the composite phase mask can be made even less sensitive to defocus than any single mask. At the same time, as the number of phase masks used to generate one composite phase mask increases, the DOF extension effect can also be changed. Both the simulations and experiments demonstrate the effectiveness of the composite phase masks and the work reported also enriches the phase mask family used to realize the large DOF effect. &copy; 2011 SPIE.

Number of references:10

Main heading:Pattern recognition systems

Controlled terms:Codes (symbols) - Computer vision - Imaging systems - Optical transfer function - Wavefronts

Uncontrolled terms:Aperture plane - Composite phase - Defocus - Depth of field - Incoherent imaging - Optimized parameter - Phase masks - Single-mask - Wave-front coding

Classification code:723.2 Data Processing and Image Processing - 723.5 Computer Applications - 741.1 Light/Optics - 741.2 Vision

DOI:10.1117/12.900250

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 301>

 

Accession number:20114314447210

Title:Supercontinuum generation employing the high-energy wave-breaking-free pulse in a compact all-fiber laser system

Authors:Wang, L.R. (1); Liu, X.M. (1); Gong, Y.K. (1); Mao, D. (1); Duan, L.N. (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xian Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xian 710119, China

Corresponding author:Wang, L.R.

Source title:Laser Physics

Abbreviated source title:Laser Phys.

Volume:21

Issue:10

Issue date:October 2011

Publication year:2011

Pages:1797-1803

Language:English

ISSN:1054660X

E-ISSN:15556611

Document type:Journal article (JA)

Publisher:Maik Nauka-Interperiodica Publishing, Profsoyuznaya Ul 90, Moscow, 117997, Russia

Abstract:Supercontinuum (SC) generation is experimentally achieved in a compact all-fiber laser system by using high-energy wave-breaking-free dissipative soliton (DS) pulses. The pulses exhibit Gaussian (rectangular) shape profiles in spectral (temporal) domain, which is even reversed of the typical rectangular-spectrum DSs. With the increase of pump power the pulse duration enlarges dramatically whereas the bandwidth and peak power of the pulse keep almost constant, which enables the pulse to accumulate much higher energy during the pulse-shaping process. When inputting the amplified pulse into the single-mode fiber, SC with excellent flatness is generated with the spectral range from about 1550 to 1700 nm. Broader SC with the bandwidth of even larger than 1000 nm can also be generated by this kind of pulse in the near-zero-dispersion-flattened photonic-crystal fiber through strong nonlinear effects. &copy; 2011 Pleiades Publishing, Ltd.

Number of references:39

Main heading:Optical pumping

Controlled terms:Bandwidth - Fiber lasers - Fibers - High energy physics - Liquid waves - Nonlinear optics - Single mode fibers - Solitons

Uncontrolled terms:All-fiber lasers - Amplified pulse - Dissipative solitons - Gaussians - High energy - Nonlinear effect - Peak power - Pulse durations - Pulse-shaping - Pump power  - Spectral range - Supercontinuum generations

Classification code:932.1 High Energy Physics - 931.3 Atomic and Molecular Physics - 931.1 Mechanics - 817 Plastics and Other Polymers: Products and Applications - 812 Ceramics, Refractories and Glass - 741 Light, Optics and Optical Devices - 716.1 Information Theory and Signal Processing

DOI:10.1134/S1054660X11170245

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 302>

 

Accession number:20114014404955

Title:Influence of spectral broadening on femtosecond wavelength conversion based on four-wave mixing in silicon waveguides

Authors:Wang, Zhaolu (1); Liu, Hongjun (1); Huang, Nan (1); Sun, Qibing (1); Wen, Jin (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics Technology, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Science (CAS), Xi'an, 710119, China; (2) Graduate University of CAS, Beijing, 100049, China

Corresponding author:Liu, H.(liuhongjun@opt.ac.cn)

Source title:Applied Optics

Abbreviated source title:Appl. Opt.

Volume:50

Issue:28

Issue date:October 1, 2011

Publication year:2011

Pages:5430-5436

Language:English

ISSN:1559128X

E-ISSN:15394522

CODEN:APOPAI

Document type:Journal article (JA)

Publisher:Optical Society of America, 2010 Massachusetts Ave, NW, Washington, DC, DC 20036-1023, United States

Abstract:Femtosecond wavelength conversion in the telecommunication bands via four-wave mixing in a 1:5mm long silicon rib waveguide is theoretically investigated. Compared with picosecond pulses, the spectra are greatly broadened for the femtosecond pulses due to self-phase modulation and cross-phase modulation in the four-wave mixing process, and it is difficult to achieve a wavelength converter when the pump and signal pulse widths are close to or less than 100 fs in the telecommunication bands because of the spectral overlap. The influence of the spectral broadening on the conversion efficiency is also investigated. The conversion bandwidth of 220nm and peak conversion efficiency of -8 dB are demonstrated by using 500 fs pulses with higher efficiency than the picosecond pulse-pumped efficiency when the repetition rate is 100 GHz. &copy; 2011 Optical Society of America.

Number of references:29

Main heading:Four wave mixing

Controlled terms:Conversion efficiency - Efficiency - Electromagnetic pulse - Optical pumping - Phase modulation - Pulse repetition rate - Ultrashort pulses - Waveguides

Uncontrolled terms:100 GHz - Cross-phase modulations - Femtoseconds - Fs pulse - Higher efficiency - Pico-second pulse - Picoseconds - Repetition rate - Signal pulse - Silicon rib waveguides  - Silicon waveguide - Spectral broadening - Spectral overlap - Telecommunication bands - Wavelength converter

Classification code:913.1 Production Engineering - 744.1 Lasers, General - 741.1 Light/Optics - 716 Telecommunication; Radar, Radio and Television - 714.3 Waveguides - 701 Electricity and Magnetism - 525.5 Energy Conversion Issues

DOI:10.1364/AO.50.005430

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 303>

 

Accession number:20105213523200

Title:Polymer-metal complex as gel electrolyte for quasi-solid-state dye-sensitized solar cells

Authors:Xiang, Wanchun (1); Fang, Yanyan (1); Lin, Yuan (1); Fang, Shibi (1)

Author affiliation:(1) Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China; (2) Graduate School of Chinese Academy of Sciences, Beijing 100049, China; (3) Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China

Corresponding author:Fang, S.(Fangsb@iccas.ac.cn)

Source title:Electrochimica Acta

Abbreviated source title:Electrochim Acta

Volume:56

Issue:3

Issue date:January 1, 2011

Publication year:2011

Pages:1605-1610

Language:English

ISSN:00134686

CODEN:ELCAAV

Document type:Journal article (JA)

Publisher:Elsevier Ltd, Langford Lane, Kidlington, Oxford, OX5 1GB, United Kingdom

Abstract:A kind of polymer-metal complex gel electrolyte is successfully prepared and is used in dye-sensitized solar cells. Raman and X-ray photoelectron spectroscopy confirm the structure of this complex and is found that the metal ion reacts with nitrogen in the polymer. This novel electrolyte shows apparent diffusion coefficient of iodide of 8.37 &times; 10^-7 cm² s^-1 and the energy conversion efficiency of 6.10% when the amount of ZnI<inf>2</inf> is 0.04 M. By studying the dissociation active energy of the inorganic salt in electrolytes, we find that the metal salts can dissociate more easily after reacting with polymer and as a result can provide extra free iodide ion. The cell maintains ca. 93% of its initial efficiency after 20 d without further sealing, which shows good long-time stability. &copy; 2010 Elsevier Ltd. All rights reserved.

Number of references:17

Main heading:Solar cells

Controlled terms:Conversion efficiency - Electrolytes - Energy conversion - Gels - Metal complexes - Metal ions - Metals - Photoelectrochemical cells - Polymers - Surface diffusion  - X ray photoelectron spectroscopy

Uncontrolled terms:Active energy - Apparent diffusion coefficient - Dye-Sensitized solar cell - Gel electrolyte - Initial efficiency - Inorganic salts - Iodide ion - Metal salt - Polymer-metal complex - Polymer-metal complexes  - Quasi-solid state - Quasi-Solid-State dye-sensitized solar cells - Time stability

Classification code:815.1 Polymeric Materials - 804.2 Inorganic Compounds - 804 Chemical Products Generally - 803 Chemical Agents and Basic Industrial Chemicals - 801.4.1 Electrochemistry - 933 Solid State Physics - 801 Chemistry - 533 Ore Treatment and Metal Refining - 531.1 Metallurgy - 531 Metallurgy and Metallography - 525.5 Energy Conversion Issues - 702 Electric Batteries and Fuel Cells

DOI:10.1016/j.electacta.2010.10.061

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 304>

 

Accession number:20113214224392

Title:Communication capacity of a free space laser communication system in atmospheric turbulent and disperse channels

Authors:Lu, Hongqiang (1); Zhao, Wei (1); Xie, Xiaoping (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (2) Graduate University of Chinese Academy of Sciences, Beijing 100049, China; (3) Xi'an Communication College, Xi'an 710106, China

Corresponding author:Lu, H.(luhongqiang@opt.ac.cn)

Source title:Chinese Optics Letters

Abbreviated source title:Chin. Opt. Lett.

Volume:9

Issue:SUPPL. 1

Issue date:June 2011

Publication year:2011

Pages:S10603

Language:English

ISSN:16717694

Document type:Journal article (JA)

Publisher:Science Press, 18,Shuangqing Street,Haidian, Beijing, 100085, China

Abstract:The pulse broadening and communication capacity in atmospheric turbulent and disperse channels are investigated. Models on pulse broadening are proposed, and the simulated results for a typical atmospheric condition and configuration are provided. The results show that the capacity of the system is affected mainly by atmospheric dispersion rather than atmospheric turbulence. The received pulse width can be minimized, and the system-achievable capacity can be maximized by selecting the optimum input pulse width. The proposed method can be used to predict the achievable capacity of a free space laser communication system in turbulent and disperse channels. &copy; 2011 Chinese Optics Letters.

Number of references:15

Main heading:Atmospheric thermodynamics

Controlled terms:Atmospheric turbulence - Communication - Computer simulation - Integrated optics - Telecommunication systems

Uncontrolled terms:Atmospheric conditions - Atmospheric dispersion - Communication capacity - Free space laser communication systems - Optimum input - Pulse broadening - Pulse width - Simulated results

Classification code:443.1 Atmospheric Properties - 716 Telecommunication; Radar, Radio and Television - 723.5 Computer Applications - 741.3 Optical Devices and Systems

DOI:10.3788/COL201109.S10603

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 305>

 

Accession number:20120114664558

Title:Strain measurement aided assembly for a CFRP hexapod

Authors:Ren, Guorui (1); Li, Chuang (1); Wang, Wei (1); Fan, Xuewu (1)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, CAS, Xi'an 710119, China

Corresponding author:Ren, G.(renguorui@opt.ac.cn)

Source title:Proceedings of SPIE - The International Society for Optical Engineering

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:8321

Monograph title:Seventh International Symposium on Precision Engineering Measurements and Instrumentation

Issue date:2011

Publication year:2011

Article number:83213O

Language:English

ISSN:0277786X

CODEN:PSISDG

ISBN-13:9780819479402

Document type:Conference article (CA)

Conference name:7th International Symposium on Precision Engineering Measurements and Instrumentation

Conference date:August 7, 2011 - August 11, 2011

Conference location:Lijiang, China

Conference code:87934

Sponsor:International Committee on Measurements and Instrumentation; National Natural Science Foundation of China

Publisher:SPIE, P.O. Box 10, Bellingham, WA 98227-0010, United States

Abstract:In order to mount a space optical telescope with long focal length on a spacecraft for an astronomy observation mission, a carbon fiber reinforced plastic (CFRP) hexapod with titanium alloy brackets was designed and fabricated. Each bracket has a pair of heads and each head has two orthogonal flexures as virtual pivots without clearance to provide flexure mounts. Because of no adjustment parts, slight differences among components and roughly assembly would result in misalignment and asymmetrical stress in the hexapod. The stresses and strains of the CFRP hexapod structure under 1G gravity load were analyzed with finite element method. In order to monitor the assembly stress and provide regulating guidance, strain gauges were stuck centrally on the bottom flexures of each bracket. Comparing the measured strains with the computed values, the low stress assembly of the CFRP hexapod has been accomplished successfully. &copy; 2011 Copyright Society of Photo-Optical Instrumentation Engineers (SPIE).

Number of references:9

Main heading:Strain measurement

Controlled terms:Carbon fibers - Elasticity - Fiber reinforced plastics - Finite element method - Measurements - Mountings - Optical telescopes - Precision engineering - Reinforced plastics - Strain  - Structural design - Titanium - Titanium alloys

Uncontrolled terms:Asymmetrical stress - CFRP (carbon fiber reinforced plastic) - Flexure mounts - Focal lengths - Gravity loads - Hexapod - Low stress

Classification code:817.2 Polymer Applications - 921.6 Numerical Methods - 941 Acoustical and Optical Measuring Instruments - 944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments - 941.3 Optical Instruments - 943 Mechanical and Miscellaneous Measuring Instruments - 943.2 Mechanical Variables Measurements - 942 Electric and Electronic Measuring Instruments - 817.1 Polymer Products - 804 Chemical Products Generally - 408.1 Structural Design, General - 421 Strength of Building Materials; Mechanical Properties - 422 Strength of Building Materials; Test Equipment and Methods - 542.3 Titanium and Alloys - 601.2 Machine Components - 761 Nanotechnology

DOI:10.1117/12.905366

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 306>

 

Accession number:20114714532615

Title:Nonequilibrium plasmas generated by dielectric barrier discharges at atmospheric pressure

Authors:Tang, Jie (1); Zhao, Wei (1); Duan, Jiana (2); Duan, Yixiang (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (2) Department of Chemistry, Georgia Institute of Technology, Atlanta, GA 30332, United States; (3) Research Center of Analytical Instrumentation, Sichuan University, Chengdu 610064, China

Corresponding author:Tang, J.

Source title:IEEE Transactions on Plasma Science

Abbreviated source title:IEEE Trans Plasma Sci

Volume:39

Issue:11 PART 1

Issue date:November 2011

Publication year:2011

Pages:2080-2081

Article number:5934604

Language:English

ISSN:00933813

CODEN:ITPSBD

Document type:Journal article (JA)

Publisher:Institute of Electrical and Electronics Engineers Inc., 445 Hoes Lane / P.O. Box 1331, Piscataway, NJ 08855-1331, United States

Abstract:Both propane plasma and air plasma are successfully generated at atmospheric pressure by using two dielectric barrier discharge reactors with different configurations, in which one is used to activate propane and the other is used to activate air. The plasma pictures show that the microdischarge channels in the plasmas increase and become increasingly more uniform with the deposited power under both activation methods. It is found that the propane plasma is of an ivory white color, while the air plasma is purple, as a result of the different gas components. A 30-W propane or air plasma leads to a significant temperature rise of the main flame, attributed to the production of reactive radicals and fuel fragments in such plasmas. &copy; 2006 IEEE.

Number of references:4

Main heading:Plasmas

Controlled terms:Atmospheric pressure - Atmospherics - Dielectric devices - Electric discharges - Flow control - Plasma applications - Plasma diagnostics - Propane

Uncontrolled terms:Activation method - Air plasmas - Dielectric barrier discharge reactors - Dielectric barrier discharges - Gas component - Microdischarges - Nonequilibrium plasmas - Nonthermal plasma - Reactive radicals - Temperature rise  - White color

Classification code:932.3 Plasma Physics - 714 Electronic Components and Tubes - 704 Electric Components and Equipment - 701.1 Electricity: Basic Concepts and Phenomena - 631.1 Fluid Flow, General - 522 Gas Fuels - 443.1 Atmospheric Properties

DOI:10.1109/TPS.2011.2159126

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 307>

 

Accession number:20111913971850

Title:Synthesis of a side chain conjugated polythiophene copolymer and its photovoltaic property

Authors:Gao, Chao (1); Qu, Bo (3); Jiang, Zhongliang (1); Tian, Di (1); Liu, Hongli (1); Chen, Zhijian (3); Xiao, Lixin (3); Gong, Qihuang (3)

Author affiliation:(1) Xi'An Modern Chemistry Research Institute, Xi'an Shaanxi 710065, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Science (CAS), Xi'an, Shaanxi 710119, China; (3) State Key Laboratory for Artificial Microstructures and Mesoscopic Physics, Department of Physics, Peking University, Beijing 100871, China

Corresponding author:Gao, C.(chaogao74@gmail.com)

Source title:Synthetic Metals

Abbreviated source title:Synth Met

Volume:161

Issue:9-10

Issue date:May 2011

Publication year:2011

Pages:864-868

Language:English

ISSN:03796779

CODEN:SYMEDZ

Document type:Journal article (JA)

Publisher:Elsevier Ltd, Langford Lane, Kidlington, Oxford, OX5 1GB, United Kingdom

Abstract:A new soluble polythiophene copolymer with phenylene-vinylene conjugated side chain (PEHOPVTh-Th) was synthesized. Polymer photovoltaic solar cells using PEHOPVTh-Th as donor and [6,6]-phenyl-C61-butyric acid methyl ester (PC <inf>61</inf>BM) as acceptor was demonstrated. The absorption spectrum of the PEHOPVTh-Th showed strong absorption in the visible region and a 55 nm red-shift in comparison with that of its homopolymer (PEHOPVTh). By adjusting the ratio of PEHOPVTh-Th to PC<inf>61</inf>BM, the polymer solar cells based on PEHOPVTh-Th showed a power conversion efficiency of 0.37% under 100 mW/cm ² AM 1.5G simulated sunlight when the weight ratio of the polymer to PC<inf>61</inf>BM equals to 1:3. &copy; 2011 Elsevier B.V.

Number of references:20

Main heading:Conjugated polymers

Controlled terms:Absorption - Absorption spectroscopy - Butyric acid - Conversion efficiency - Copolymerization - Copolymers - Esters - Heterojunctions - Organic polymers - Photoelectrochemical cells  - Photovoltaic cells - Photovoltaic effects - Solar cells - Solar power generation

Uncontrolled terms:Bulk heterojunction - Homopolymers - Methyl esters - Photovoltaic property - Poly-thiophene - Polymer photovoltaics - Polymer Solar Cells - Polythiophene copolymers - Power conversion efficiencies - Red shift  - Side chain conjugated - Side chains - Simulated sunlight - Visible region - Weight ratios

Classification code:815 Polymers and Polymer Science - 804.1 Organic Compounds - 801.4.1 Electrochemistry - 801 Chemistry - 931.2 Physical Properties of Gases, Liquids and Solids - 741 Light, Optics and Optical Devices - 702.3 Solar Cells - 615.2 Solar Power - 525.5 Energy Conversion Issues - 714.2 Semiconductor Devices and Integrated Circuits

DOI:10.1016/j.synthmet.2011.02.014

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 308>

 

Accession number:20113414251230

Title:Induced transparency in nanoscale plasmonic resonator systems

Authors:Lu, Hua (1); Liu, Xueming (1); Mao, Dong (1); Gong, Yongkang (1); Wang, Guoxi (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China

Corresponding author:Liu, X.(liuxueming72@yahoo.com)

Source title:Optics Letters

Abbreviated source title:Opt. Lett.

Volume:36

Issue:16

Issue date:August 15, 2011

Publication year:2011

Pages:3233-3235

Language:English

ISSN:01469592

E-ISSN:15394794

CODEN:OPLEDP

Document type:Journal article (JA)

Publisher:Optical Society of America, 2010 Massachusetts Ave, NW, Washington, DC, DC 20036-1023, United States

Abstract:An optical effect analogous to electromagnetically induced transparency (EIT) is observed in nanoscale plasmonic resonator systems. The system consists of a slot cavity as well as plasmonic bus and resonant waveguides, where the phase-matching condition of the resonant waveguide is tunable for the generation of an obvious EIT-like coupled resonator-induced transparency effect. A dynamic theory is utilized to exactly analyze the influence of physical parameters on transmission characteristics. The transparency effect induced by coupled resonance may have potential applications for nanoscale optical switching, nanolaser, and slow-light devices in highly integrated optical circuits. &copy; 2011 Optical Society of America.

Number of references:27

Main heading:Transparency

Controlled terms:Coupled circuits - Diagnostic radiography - Nanostructured materials - Nanotechnology - Photonic integration technology - Plasmons - Quantum optics - Resonators - Slow light - Waveguides

Uncontrolled terms:Coupled resonance - Dynamic theory - Electromagnetically-induced transparency - Highly integrated - Induced transparency - Nano scale - Optical effects - Optical switching - Phase-matching condition - Physical parameters  - Plasmonic - Potential applications - Slow-light devices - Transmission characteristics

Classification code:761 Nanotechnology - 746 Imaging Techniques - 741.3 Optical Devices and Systems - 741.1 Light/Optics - 714 Electronic Components and Tubes - 713.5 Electronic Circuits Other Than Amplifiers, Oscillators, Modulators, Limiters, Discriminators or Mixers - 712.1 Semiconducting Materials

DOI:10.1364/OL.36.003233

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 309>

 

Accession number:20114614524960

Title:Spatial domain display for interference image dataset

Authors:Wang, Cai-Ling (1); Li, Yu-Shan (2); Liu, Xue-Bin (1); Hu, Bing-Liang (1); Jing, Juan-Juan (1); Wen, Jia (1)

Author affiliation:(1) Key Lab of Spectral Imaging in Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (2) CAD Lab of Xidian University, Xi'an 710069, China

Corresponding author:Li, Y.-S.(Yushanli@mail.xidian.edu.cn)

Source title:Guang Pu Xue Yu Guang Pu Fen Xi/Spectroscopy and Spectral Analysis

Abbreviated source title:Guang Pu Xue Yu Guang Pu Fen Xi

Volume:31

Issue:11

Issue date:November 2011

Publication year:2011

Pages:3158-3162

Language:Chinese

ISSN:10000593

CODEN:GYGFED

Document type:Journal article (JA)

Publisher:Science Press, 18,Shuangqing Street,Haidian, Beijing, 100085, China

Abstract:The requirements of imaging interferometer visualization is imminent for the user of image interpretation and information extraction. However, the conventional researches on visualization only focus on the spectral image dataset in spectral domain. Hence, the quick show of interference spectral image dataset display is one of the nodes in interference image processing. The conventional visualization of interference dataset chooses classical spectral image dataset display method after Fourier transformation. In the present paper, the problem of quick view of interferometer imager in image domain is addressed and the algorithm is proposed which simplifies the matter. The Fourier transformation is an obstacle since its computation time is very large and the complexion would be even deteriorated with the size of dataset increasing. The algorithm proposed, named interference weighted envelopes, makes the dataset divorced from transformation. The authors choose three interference weighted envelopes respectively based on the Fourier transformation, features of interference data and human visual system. After comparing the proposed with the conventional methods, the results show the huge difference in display time.

Number of references:18

Main heading:Fourier transforms

Controlled terms:Algorithms - Data processing - Flow visualization - Fourier analysis - Image processing - Interferometers - Metadata - Visualization

Uncontrolled terms:Computation time - Conventional methods - Data sets - Dimensionality reduction - Human Visual System - Image domain - Image interpretation - Imaging interferometers - Information Extraction - Interference data  - Interference images - Interference spectral images - Spatial domains - Spectral domains - Spectral images - True-colour show

Classification code:941.3 Optical Instruments - 921.3 Mathematical Transformations - 921 Mathematics - 902.1 Engineering Graphics - 752 Sound Devices, Equipment and Systems - 751 Acoustics, Noise. Sound - 723.2 Data Processing and Image Processing - 723 Computer Software, Data Handling and Applications - 631.1 Fluid Flow, General

DOI:10.3964/j.issn.1000-0593 (2011) 11-3158-05

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 310>

 

Accession number:20113914362056

Title:KLT feature based vehicle detection and tracking in airborne videos

Authors:Cao, Xianbin (1); Lan, Jinhe (1); Yan, Pingkun (2); Li, Xuelong (2)

Author affiliation:(1) Anhui Province Key Laboratory of Software In Computing and Communication, School of Computer Science and Technology, University of Science and Technology of China, Hefei, 230027, Anhui, China; (2) State Key Laboratory of Transient Optics and Photonics, Center for OPTical IMagery Analysis and Learning (OPTIMAL), Xi'an Institute of Optics and Precision Mechanics Chinese Academy of Sciences, Xi'an, 710119, Shaanxi, China

Corresponding author:Cao, X.(xbcao@buaa.edu.cn)

Source title:Proceedings - 6th International Conference on Image and Graphics, ICIG 2011

Abbreviated source title:Proc. - Int. Conf. Image Graph., ICIG

Monograph title:Proceedings - 6th International Conference on Image and Graphics, ICIG 2011

Issue date:2011

Publication year:2011

Pages:673-678

Article number:6005950

Language:English

ISBN-13:9780769545417

Document type:Conference article (CA)

Conference name:6th International Conference on Image and Graphics, ICIG 2011

Conference date:August 12, 2011 - August 15, 2011

Conference location:Hefei, Anhui, China

Conference code:86574

Sponsor:National Natural Science Foundation of China; Chinese Academy of Science; Microsoft Research Asia; Xian Institute of Optics and Precision Mechanics of CAS; Anhui Crearo Technology Co., Ltd

Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States

Abstract:Airborne vehicle detection and tracking systems equipped on unmanned aerial vehicles (UAVs) are difficult to develop because of factors like UAV motion, scene complexity and so on. In this paper, we propose a new framework of multi-motion layer analysis to detect and track moving vehicles in airborne platform. Moving vehicles are firstly detected by registration and temporal differencing to establish motion layers. After motion layers are constructed, they are maintained over time for tracking vehicles. All vehicles are tracked by maintaining their corresponding motion layers. Our experimental results showed that compared with other previous algorithms, our method can achieve better results in terms of detection and tracking performance. &copy; 2011 IEEE.

Number of references:11

Main heading:Tracking (position)

Controlled terms:Principal component analysis - Unmanned aerial vehicles (UAV) - Unmanned vehicles

Uncontrolled terms:Feature-tracking - Frame registration - Motion layers - Temporal differencing - Vehicle detection

Classification code:472 Ocean Engineering - 652 Aircraft and Avionics - 652.1 Aircraft, General - 716.2 Radar Systems and Equipment - 922.2 Mathematical Statistics

DOI:10.1109/ICIG.2011.92

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 311>

 

Accession number:20141617592803

Title:Image denoising via improved sparse coding

Authors:Lu, Xiaoqiang (1); Yuan, Haoliang (2); Yan, Pingkun (1); Yuan, Yuan (1); Li, Luoqing (2); Li, Xuelong (1)

Author affiliation:(1) Center for OPTical IMagery Analysis and Learning (OPTIMAL), State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Xi'an, Shaanxi, 710119, China; (2) Faculty of Mathematics and Computer Science, Hubei University, Wuhan, Hubei, 430062, China

Source title:BMVC 2011 - Proceedings of the British Machine Vision Conference 2011

Abbreviated source title:BMVC - Proc. Br. Mach. Vis. Conf.

Monograph title:BMVC 2011 - Proceedings of the British Machine Vision Conference 2011

Issue date:2011

Publication year:2011

Language:English

Document type:Conference article (CA)

Conference name:2011 22nd British Machine Vision Conference, BMVC 2011

Conference date:August 29, 2011  -  September 2, 2011

Conference location:Dundee, United kingdom

Conference code:104327

Publisher:British Machine Vision Association, BMVA

Abstract:This paper presents a novel dictionary learning method for image denoising, which removes zero-mean independent identically distributed additive noise from a given image. Choosing noisy image itself to train an over-complete dictionary, the dictionary trained by traditional sparse coding methods contains noise information. Through mathematical derivation of equation, we found that a lower bound of dictionary is related with the level of noise in dictionary learning. The proposed idea is to take advantage of the noise information for designing a sparse coding algorithm called improved sparse coding (ISC), which effectively suppresses the noise influence for training a dictionary. This denoising framework utilizes the effective method, which is based on sparse representations over trained dictionaries. Acquiring an over-complete dictionary by ISC mainly includes three stages. Firstly, we utilize K-means method to group the noisy image patches. Secondly, each dictionary is trained by ISC in corresponding class. Finally, an over-complete dictionary is merged by these dictionaries. Theory analysis and experimental results both demonstrate that the proposed method yields excellent performance. &copy; 2011. The copyright of this document resides with its authors.

Number of references:16

Main heading:Image coding

Controlled terms:Computer vision - Image denoising

Uncontrolled terms:Dictionary learning - K-means method - Mathematical derivation - Noise influence - Noise information - Over-complete dictionaries - Sparse coding - Sparse representation

Classification code:716.1 Information Theory and Signal Processing - 741 Light, Optics and Optical Devices - 741.2 Vision

DOI:10.5244/C.110.310

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 312>

 

Accession number:20110613651240

Title:Refluxing of fast electrons in solid targets irradiated by intense, picosecond laser pulses

Authors:Quinn, M.N. (1); Yuan, X.H. (1); Lin, X.X. (2); Carroll, D.C. (1); Tresca, O. (1); Gray, R.J. (1); Coury, M. (1); Li, C. (2); Li, Y.T. (2); Brenner, C.M. (3); Robinson, A.P.L. (3); Neely, D. (3); Zielbauer, B. (4); Aurand, B. (4); Fils, J. (4); Kuehl, T. (4); McKenna, P. (1)

Author affiliation:(1) SUPA, Department of Physics, University of Strathclyde, Glasgow G4 0NG, United Kingdom; (2) Beijing National Laboratory of Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China; (3) Central Laser Facility, STFC Rutherford Appleton Laboratory, Didcot, Oxfordshire OX11 0QX, United Kingdom; (4) PHELIX Department, Gesellschaft f&#252;r Schwerionenforschung mbH, Planckstrasse 1, D-64291, Darmstadt, Germany; (5) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China

Corresponding author:McKenna, P.(p.mckenna@phys.strath.ac.uk)

Source title:Plasma Physics and Controlled Fusion

Abbreviated source title:Plasma Phys Controlled Fusion

Volume:53

Issue:2

Issue date:February 2011

Publication year:2011

Article number:025007

Language:English

ISSN:07413335

E-ISSN:13616587

CODEN:PLPHBZ

Document type:Journal article (JA)

Publisher:Institute of Physics Publishing, Temple Back, Bristol, BS1 6BE, United Kingdom

Abstract:The propagation of fast electrons produced in the interaction of relativistically intense, picosecond laser pulses with solid targets is experimentally investigated using K<inf>&alpha;</inf> emission as a diagnostic. The role of fast electron refluxing within the target, which occurs when the electrons are reflected by the sheath potentials formed at the front and rear surfaces, is elucidated. The targets consist of a Cu fluorescence layer of fixed thickness at the front surface backed with a propagation layer of CH, the thickness of which is varied to control the number of times the refluxing fast electron population transits the Cu fluorescence layer. Enhancements in the K<inf>&alpha;</inf> yield and source size are measured as the thickness of the CH layer is decreased. Comparison with analytical and numerical modelling confirms that significant refluxing occurs and highlights the importance of considering this phenomenon when deriving information on fast electron transport from laser-solid interaction experiments involving relatively thin targets. &copy; 2011 IOP Publishing Ltd.

Number of references:33

Main heading:Electrons

Controlled terms:Fluorescence - Laser pulses - Neutron emission - Population statistics

Uncontrolled terms:Fast electron transport - Fast electrons - Front surfaces - Laser-solid interaction - Numerical modelling - Picosecond laser pulse - Rear surfaces - Refluxing - Solid targets - Source sizes  - Thin target

Classification code:701.1 Electricity: Basic Concepts and Phenomena - 741.1 Light/Optics - 744.1 Lasers, General - 922.2 Mathematical Statistics - 932.1 High Energy Physics

DOI:10.1088/0741-3335/53/2/025007

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 313>

 

Accession number:20110613652027

Title:Biologically inspired features for scene classification in video surveillance

Authors:Huang, Kaiqi (1); Tao, Dacheng (2); Yuan, Yuan (3); Li, Xuelong (4); Tan, Tieniu (1)

Author affiliation:(1) National Laboratory of Pattern Recognition, Institute of Automation, Chinese Academy of Sciences, Beijing 100080, China; (2) School of Computer Engineering, Nanyang Technological University, Singapore 639798, Singapore; (3) School of Engineering and Applied Science, Aston University, Birmingham B4 7ET, United Kingdom; (4) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China

Corresponding author:Huang, K.

Source title:IEEE Transactions on Systems, Man, and Cybernetics, Part B: Cybernetics

Abbreviated source title:IEEE Trans Syst Man Cybern Part B Cybern

Volume:41

Issue:1

Issue date:February 2011

Publication year:2011

Pages:307-313

Article number:5395619

Language:English

ISSN:10834419

CODEN:ITSCFI

Document type:Journal article (JA)

Publisher:Institute of Electrical and Electronics Engineers Inc., 445 Hoes Lane / P.O. Box 1331, Piscataway, NJ 08855-1331, United States

Abstract:Inspired by human visual cognition mechanism, this paper first presents a scene classification method based on an improved standard model feature. Compared with state-of-the-art efforts in scene classification, the newly proposed method is more robust, more selective, and of lower complexity. These advantages are demonstrated by two sets of experiments on both our own database and standard public ones. Furthermore, occlusion and disorder problems in scene classification in video surveillance are also first studied in this paper. &copy; 2010 IEEE.

Number of references:35

Main heading:Security systems

Controlled terms:Monitoring

Uncontrolled terms:Biologically inspired - Human visual - Lower complexity - scene classification - Standard model - video surveillance

Classification code:914.1 Accidents and Accident Prevention - 941 Acoustical and Optical Measuring Instruments - 942 Electric and Electronic Measuring Instruments - 943 Mechanical and Miscellaneous Measuring Instruments - 944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments

DOI:10.1109/TSMCB.2009.2037923

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 314>

 

Accession number:20120514729833

Title:Face sketch-photo synthesis based on support vector regression

Authors:Zhang, Jiewei (1); Wang, Nannan (1); Gao, Xinbo (1); Tao, Dacheng (2); Li, Xuelong (2)

Author affiliation:(1) School of Electronic Engineering, Xidian University, Xi'an 710071, Shaanxi, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, Shaanxi, China

Corresponding author:Zhang, J.

Source title:Proceedings - International Conference on Image Processing, ICIP

Abbreviated source title:Proc. Int. Conf. Image Process. ICIP

Monograph title:ICIP 2011: 2011 18th IEEE International Conference on Image Processing

Issue date:2011

Publication year:2011

Pages:1125-1128

Article number:6115625

Language:English

ISSN:15224880

ISBN-13:9781457713033

Document type:Conference article (CA)

Conference name:2011 18th IEEE International Conference on Image Processing, ICIP 2011

Conference date:September 11, 2011 - September 14, 2011

Conference location:Brussels, Belgium

Conference code:88213

Sponsor:IEEE; IEEE Signal Processing Society

Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States

Abstract:The existing face sketch-photo synthesis methods trend to lose some vital details more or less. In this paper, we propose a novel sketch-photo synthesis approach based on support vector regression (SVR) to handle this difficulty. First, we utilize an existing method to acquire the initial estimate of the synthesized image. Then, the final synthesized image is obtained by combining the initial estimate and the SVR based high frequency information together to further enhance the quality of synthesized image. Experimental results on the benchmark database and our new constructed database demonstrate that the proposed method can achieve significant improvement on perceptual quality. Moreover, the synthesized face images can obtain higher recognition rate when used in retrieval system. &copy; 2011 IEEE.

Number of references:13

Main heading:Face recognition

Controlled terms:Benchmarking - Regression analysis

Uncontrolled terms:Benchmark database - Face images - High frequency - High frequency HF - Initial estimate - Perceptual quality - Recognition rates - Retrieval systems - support vector regression - Support vector regressions  - Synthesis method - Synthesized images

Classification code:716 Telecommunication; Radar, Radio and Television - 912 Industrial Engineering and Management - 913 Production Planning and Control; Manufacturing - 922.2 Mathematical Statistics

DOI:10.1109/ICIP.2011.6115625

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 315>

 

Accession number:20110113548275

Title:Image reconstruction by an alternating minimisation

Authors:Lu, Xiaoqiang (1); Sun, Yi (1); Yuan, Yuan (2)

Author affiliation:(1) Department of electrical engineering, Dalian University of Technology, Dalian, China; (2) Center for OPTical IMagery Analysis and Learning (OPTIMAL), State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, Shaanxi, China

Corresponding author:Yuan, Y.(yuany@opt.ac.cn)

Source title:Neurocomputing

Abbreviated source title:Neurocomputing

Volume:74

Issue:5

Issue date:February 2011

Publication year:2011

Pages:661-670

Language:English

ISSN:09252312

CODEN:NRCGEO

Document type:Journal article (JA)

Publisher:Elsevier, P.O. Box 211, Amsterdam, 1000 AE, Netherlands

Abstract:This paper focuses on the problem of incomplete data in the applications of the circular cone-beam computed tomography. This problem is frequently encountered in medical imaging sciences and some other industrial imaging systems. For example, it is crucial when the high density region of objects can only be penetrated by X-rays in a limited angular range. As the projection data are only available in an angular range, the above mentioned incomplete data problem can be attributed to the limited angle problem, which is an ill-posed inverse problem. This paper reports a modified total variation minimisation method to reduce the data insufficiency in tomographic imaging. This proposed method is robust and efficient in the task of reconstruction by showing the convergence of the alternating minimisation method. The results demonstrate that this new reconstruction method brings reasonable performance. &copy; 2010 Elsevier B.V.

Number of references:35

Main heading:Medical imaging

Controlled terms:Computerized tomography - Image reconstruction - Inverse problems

Uncontrolled terms:Angular range - Circular cones - High density regions - ILL-posed inverse problem - Incomplete data - Limited-angle tomography - Projection data - Reconstruction method - Tomographic imaging - Total variation

Classification code:531 Metallurgy and Metallography - 741 Light, Optics and Optical Devices - 746 Imaging Techniques - 801 Chemistry - 921 Mathematics

DOI:10.1016/j.neucom.2010.08.003

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 316>

 

Accession number:20112013983982

Title:High power all-fiber structured supercontinuum source with variable spectral coverage

Authors:Yang, Z. (1); Hu, X.H. (1); Wang, Y.S. (1); Zhang, W. (1); Zhao, W. (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China

Corresponding author:Yang, Z.(yz2422@163.com)

Source title:Laser Physics

Abbreviated source title:Laser Phys.

Volume:21

Issue:4

Issue date:April 2011

Publication year:2011

Pages:704-707

Language:English

ISSN:1054660X

E-ISSN:15556611

Document type:Journal article (JA)

Publisher:Maik Nauka-Interperiodica Publishing, Profsoyuznaya Ul 90, Moscow, 117997, Russia

Abstract:An all-fiber structured supercontinuum source based on chirped pulse amplification (CPA) technology and the use of nonlinear photonic crystal fiber was constructed. By experimentally varying fiber stretcher length in CPA laser source, we can change the spectral coverage and therefore the percentage of visible light in the produced supercontinuum at output of nonlinear photonic crystal fiber, while the average supercontinuum power always keeps at watts of level. The all-fiber structured feature and the capability of changing supercontinuum spectral coverage make this CPA system a promising implement for different applications that require different broad band spectrum. &copy; 2011 Pleiades Publishing, Ltd.

Number of references:16

Main heading:Photonic crystal fibers

Controlled terms:Crystal whiskers - Fibers - Photonic crystals - Pulse amplifiers

Uncontrolled terms:All fiber - Broad-band spectrum - Chirped pulse amplifications - CPA lasers - High-power - Nonlinear photonic crystal fiber - Spectral coverage - Supercontinuum - Supercontinuum sources - Visible light

Classification code:713.1 Amplifiers - 801.4 Physical Chemistry - 812 Ceramics, Refractories and Glass - 817 Plastics and Other Polymers: Products and Applications - 933.1 Crystalline Solids - 951 Materials Science

DOI:10.1134/S1054660X11070310

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 317>

 

Accession number:20115014594324

Title:Two-dimensional sub-half-wavelength atom localization via controlled spontaneous emission

Authors:Wan, Ren-Gang (1); Zhang, Tong-Yi (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China

Corresponding author:Wan, R.-G.(wrg@opt.ac.cn)

Source title:Optics Express

Abbreviated source title:Opt. Express

Volume:19

Issue:25

Issue date:December 5, 2011

Publication year:2011

Pages:25823-25832

Language:English

E-ISSN:10944087

Document type:Journal article (JA)

Publisher:Optical Society of America, 2010 Massachusetts Ave, NW, Washington, DC, DC 20036-1023, United States

Abstract:We propose a scheme for two-dimensional (2D) atom localization based on the controlled spontaneous emission, in which the atom interacts with two orthogonal standing-wave fields. Due to the spatially dependent atom-field interaction, the position probability distribution of the atom can be directly determined by measuring the resulting spontaneously emission spectrum. The phase sensitive property of the atomic system leads to quenching of the spontaneous emission in some regions of the standing-waves, which significantly reduces the uncertainty in the position measurement of the atom. We find that the frequency measurement of the emitted light localizes the atom in half-wavelength domain. Especially the probability of finding the atom at a particular position can reach 100% when a photon with certain frequency is detected. By increasing the Rabi frequencies of the driving fields, such 2D sub-half-wavelength atom localization can acquire high spatial resolution. &copy; 2011 Optical Society of America.

Number of references:28

Main heading:Atomic spectroscopy

Controlled terms:Atoms - Emission spectroscopy - Probability distributions - Spontaneous emission - Two dimensional - Uncertainty analysis

Uncontrolled terms:Atom localization - Atom-field interaction - Atomic system - Driving field - Emission spectrums - Emitted light - Frequency measurements - High spatial resolution - Phase sensitive - Rabi frequency  - Standing wave - Standing-wave field

Classification code:711 Electromagnetic Waves - 902.1 Engineering Graphics - 922.1 Probability Theory - 931.3 Atomic and Molecular Physics

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 318>

 

Accession number:20114514495620

Title:Video-rate wide-field coherent anti-Stokes Raman scattering microscopy with collinear nonphase-matching illumination

Authors:Lei, Ming (1); Winterhalder, Martin (1); Selm, Romedi (1); Zumbusch, Andreas (1)

Author affiliation:(1) University of Konstanz, Department of Chemistry, D-78457 Konstanz, Germany; (2) Chinese Academy of Sciences, Xi'an Institute of Optics and Precision Mechanics, State Key Laboratory of Transient Optics and Photonics, Xi'an 710119, China

Corresponding author:Zumbusch, A.(andreas.zumbusch@uni-konstanz.de)

Source title:Journal of Biomedical Optics

Abbreviated source title:J Biomed Opt

Volume:16

Issue:2

Issue date:February 2011

Publication year:2011

Article number:021102

Language:English

ISSN:10833668

E-ISSN:15602281

CODEN:JBOPFO

Document type:Journal article (JA)

Publisher:SPIE, P.O. Box 10, Bellingham, WA 98227-0010, United States

Abstract:A simple scheme for video-rate wide-field coherent anti-Stokes Raman scattering (CARS) microscopy is presented. The method is based on collinear nonphase-matching illumination. The mechanisms leading to CARS signal generation are investigated. We find that refraction-mediated phase-matching is the main effect. Video-rate wide-field CARS microscopy of polystyrene beads and CARS wide-field images of C. elegans embryos are shown, and the capabilities and the limitations of the scheme are discussed. &copy; 2011 Society of Photo-Optical Instrumentation Engineers (SPIE).

Number of references:18

Main heading:Raman scattering

Controlled terms:Coherent scattering - Polystyrenes - Raman spectroscopy - Signal generators

Uncontrolled terms:Coherent anti-Stokes Raman scattering microscopy - Elegans - Main effect - Polystyrene beads - Signal generation - Video rates - Video-rate - Wide field

Classification code:711 Electromagnetic Waves - 715 Electronic Equipment, General Purpose and Industrial - 741.1 Light/Optics - 815.1.1 Organic Polymers

DOI:10.1117/1.3533707

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 319>

 

Accession number:20111013735296

Title:Parallel two-step phase-shifting digital holograph microscopy based on a grating pair

Authors:Gao, Peng (1); Yao, Baoli (1); Harder, Irina (2); Min, Junwei (1); Guo, Rongli (1); Zheng, Juanjuan (1); Ye, Tong (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (2) Max Planck Institute for the Science of Light, Erlangen D-91058, Germany; (3) Graduate School of the Chinese Academy of Sciences, Beijing 100039, China

Corresponding author:Yao, B.(yaobl@opt.ac.cn)

Source title:Journal of the Optical Society of America A: Optics and Image Science, and Vision

Abbreviated source title:J Opt Soc Am A

Volume:28

Issue:3

Issue date:March 2011

Publication year:2011

Pages:434-440

Language:English

ISSN:10847529

E-ISSN:15208532

CODEN:JOAOD6

Document type:Journal article (JA)

Publisher:Optical Society of America, 2010 Massachusetts Ave, NW, Washington, DC, DC 20036-1023, United States

Abstract:An optical configuration for parallel two-step phase-shifting digital holographic microscopy (DHM) based on a grating pair is proposed for the purpose of real-time phase microscopy. Orthogonally circularly polarized object and reference waves are diffracted twice by a pair of gratings, and two parallel copies for each beams come into being. Combined with polarization elements, parallel two-step phase-shifting holograms are obtained. Based on the proposed configuration, two schemes of DHM, i.e., slightly off-axis and on-axis DHM, have been implemented. The slightly off-axis DHM suppresses the dc term by subtracting the two phase-shifting holograms from each other, thus the requirement on the off-axis angle and sampling power of the CCD camera is reduced greatly. The on-axis DHM has the least requirement on the resolving power of the CCD camera, while it requires that the reference wave is premeasured and its intensity is no less than 2 times the maximal intensity of the object wave. &copy; 2011 Optical Society of America.

Number of references:41

Main heading:CCD cameras

Controlled terms:Cameras - DC power transmission - Holograms

Uncontrolled terms:Circularly polarized - Digital holographic microscopy - Grating pair - Object waves - Off-axis - Off-axis angles - Optical configurations - Phase-shifting - Polarization elements - Reference waves  - Resolving power - Two phase

Classification code:706.1.1 Electric Power Transmission - 742.2 Photographic Equipment - 743 Holography

DOI:10.1364/JOSAA.28.000434

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 320>

 

Accession number:20113014179399

Title:Comment on "optical Orbital Angular Momentum from the Curl of Polarization"

Authors:Yan, Shaohui (1); Yao, Baoli (1); Lei, Ming (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China

Corresponding author:Yao, B.(yaobl@opt.ac.cn)

Source title:Physical Review Letters

Abbreviated source title:Phys Rev Lett

Volume:106

Issue:18

Issue date:May 4, 2011

Publication year:2011

Article number:189301

Language:English

ISSN:00319007

E-ISSN:10797114

CODEN:PRLTAO

Document type:Journal article (JA)

Publisher:American Physical Society, One Physics Ellipse, College Park, MD 20740-3844, United States

Abstract:A Comment on the Letter by Xi-Lin Wang et al., Phys. Rev. Lett. 105, 253602 (2010)PRLTAO0031-900710.1103/PhysRevLett.105.253602. The authors of the Letter offer a Reply. &copy; 2011 American Physical Society.

Number of references:8

Uncontrolled terms:Orbital angular momentum

DOI:10.1103/PhysRevLett.106.189301

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 321>

 

Accession number:20114714544621

Title:Interferogram spectrum reconstruction using modern spectral estimation

Authors:Han, Gang (1); Liu, Xue-Bin (1); Hu, Bing-Liang (1); Wang, Cai-Ling (1)

Author affiliation:(1) Laboratory of Spectral Imaging Technique, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, Shaanxi 710119, China; (2) Graduate School, Chinese Academy of Science, Xi'an, Shaanxi 710119, China

Corresponding author:Han, G.

Source title:2011 International Conference on Electronics, Communications and Control, ICECC 2011 - Proceedings

Abbreviated source title:Int. Conf. Electron., Commun. Control, ICECC - Proc.

Monograph title:2011 International Conference on Electronics, Communications and Control, ICECC 2011 - Proceedings

Issue date:2011

Publication year:2011

Pages:2112-2115

Article number:6066337

Language:English

ISBN-13:9781457703218

Document type:Conference article (CA)

Conference name:2011 International Conference on Electronics, Communications and Control, ICECC 2011

Conference date:September 9, 2011 - September 11, 2011

Conference location:Ningbo, China

Conference code:87394

Sponsor:Ningbo University

Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States

Abstract:In this paper, we first discussed basic spectral estimation concepts and algorithms, then pointed out that the conventional spectrum reconstruction algorithm is virtually the same with Blackman-Tukey (BT) algorithm in spectral estimation. Then we use two different method (Auto-Regressive parametric model and eigenvector spectral estimation method) to reconstruct light spectrum from interferogram, and compared the results with conventional method for spectrum reconstruction. From the comparison we concluded that the modern spectrum estimation methods can well be adopted in Fourier Transform (FT) spectrum reconstruction and would perform excellent, especially when to get higher spectrum resolution from a short series of data recorded. Later we discussed the disadvantages and restrictions of the two methods used in the simulation. From these results and discussions, we suggested to implement various new spectral estimation method in FT spectrum reconstruction to get better performance. &copy; 2011 IEEE.

Number of references:9

Main heading:Spectrum analysis

Controlled terms:Algorithms - Eigenvalues and eigenfunctions - Estimation - Fourier series - Interferometry

Uncontrolled terms:AR models - Auto-regressive - Conventional methods - FT spectrum - Interferogram spectrum - Interferograms - Light spectrum - Parametric models - Spectral Estimation - Spectral estimation methods  - Spectrum estimation - Spectrum reconstruction - Spectrum resolution

Classification code:921 Mathematics - 941.4 Optical Variables Measurements

DOI:10.1109/ICECC.2011.6066337

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 322>

 

Accession number:20114114415570

Title:Multilevel thresholding based on mean shift mode seeking

Authors:Ma, Junyong (1); Wen, Desheng (1); Yang, Shaodong (1); Yao, Dalei (1)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics of CAS, Xi'an 710119, China; (2) Graduate University of the Chinese Acad. of Sci., Beijing 100039, China

Corresponding author:Ma, J.(majunyongzhangduo@126.com)

Source title:Journal of Computational Information Systems

Abbreviated source title:J. Comput. Inf. Syst.

Volume:7

Issue:10

Issue date:October 2011

Publication year:2011

Pages:3638-3645

Language:English

ISSN:15539105

Document type:Journal article (JA)

Publisher:Binary Information Press, P.O. Box 162, Bethel, CT 06801-0162, United States

Abstract:A novel multilevel thresholding method based on mean shift procedure is proposed to resolve the problem that the optimal number of thresholds for multilevel thresholding can usually not be predetermined. The mean shift procedure is used to seek the minimal potential mode centroids, after which an iterative threshold selection method is employed to automatically determine every threshold between each pair of adjacent two mode centroids. Finally, multilevel thresholding with the multiple thresholds is utilized to segment the image. Excellent results have been obtained, testing the effectiveness of the algorithm. The proposed method can easily be used in bi-level segmentation, multilevel segmentation, lossy compression and so on. &copy; 2011 Binary Information Press.

Number of references:33

Main heading:Image segmentation

Uncontrolled terms:Iterative threshold - Lossy compressions - Mean shift - Mode seeking - Multilevel segmentation - Multilevel thresholding - Multilevel thresholding method - Multiple threshold - Optimal number

Classification code:741.1 Light/Optics

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 323>

 

Accession number:20114114423303

Title:Compound tracking in ATP system for free space optical communication

Authors:Zhang, Min (1); Liang, Yanbing (1)

Author affiliation:(1) Photoelectric Measurement and Control Technology Research Department, Xi'An Institute of Optics and Precision Mechanics of CAS, Xi'an, China

Corresponding author:Zhang, M.(zm_kobe2008@126.com)

Source title:Proceedings 2011 International Conference on Mechatronic Science, Electric Engineering and Computer, MEC 2011

Abbreviated source title:Proc. Int. Conf. Mechatronic Sci., Electr. Eng. Comput., MEC

Monograph title:Proceedings 2011 International Conference on Mechatronic Science, Electric Engineering and Computer, MEC 2011

Issue date:2011

Publication year:2011

Pages:454-456

Article number:6025499

Language:English

ISBN-13:9781612847221

Document type:Conference article (CA)

Conference name:2011 International Conference on Mechatronic Science, Electric Engineering and Computer, MEC 2011

Conference date:August 19, 2011 - August 22, 2011

Conference location:Jilin, China

Conference code:86866

Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States

Abstract:Free space optical (FSO) communication is also called as wireless optical communication. It does not require any wired channel as transmission medium. FSO is a kind of communication technology which transmits information through vacuum or atmosphere. In order to realize point-to-point communication, space optical communication needs to establish a reliable communication link. The traditional coarse tracking technology has been very mature, but low tracking precision is still the main defect, in order to realize high accuracy tracking (arc-second), compound tracking technology is generally adopted. This paper presents the key technology of free space optical communication ATP. The main research is about compound tracking technology, including the design of coarse tracking and fine tracking control system. &copy; 2011 IEEE.

Number of references:4

Main heading:Optical communication

Controlled terms:Adenosinetriphosphate - Communication - Electrical engineering - Technology - Tracking (position)

Uncontrolled terms:Communication technologies - Free Space Optical communication - Key technologies - Point-to-point communication - Reliable communication - Space optical communication - Tracking control systems - Tracking precision - Tracking technology - Transmission medium  - Wired channel - Wireless optical communication

Classification code:709 Electrical Engineering, General - 716 Telecommunication; Radar, Radio and Television - 716.2 Radar Systems and Equipment - 717.1 Optical Communication Systems - 804.1 Organic Compounds - 901 Engineering Profession

DOI:10.1109/MEC.2011.6025499

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 324>

 

Accession number:20114714544773

Title:FPGA-based multi-bit all state Pseudo-random sequences generator

Authors:Duan, Yingni (1); Zhang, Haifeng (2)

Author affiliation:(1) Xi'An University of Arts and Science, Xi'an, Shaanxi, China; (2) Xi'An Institute of Optics and Precision Mechanics of CAS, Xi'an, Shaanxi, China

Corresponding author:Duan, Y.(dyn2008@yeah.net)

Source title:2011 International Conference on Electronics, Communications and Control, ICECC 2011 - Proceedings

Abbreviated source title:Int. Conf. Electron., Commun. Control, ICECC - Proc.

Monograph title:2011 International Conference on Electronics, Communications and Control, ICECC 2011 - Proceedings

Issue date:2011

Publication year:2011

Pages:858-861

Article number:6066489

Language:English

ISBN-13:9781457703218

Document type:Conference article (CA)

Conference name:2011 International Conference on Electronics, Communications and Control, ICECC 2011

Conference date:September 9, 2011 - September 11, 2011

Conference location:Ningbo, China

Conference code:87394

Sponsor:Ningbo University

Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States

Abstract:Aiming at the problems of how to obtain the feedback function of M-sequence (all state sequences) signal and how to generate all the feedback sequence, In this paper we get the nonlinear feedback function by modifing the linear feedback network function of the linear shift register(LFSR) and realize the 12-bit M sequence using FPGA(field programmable gate array). &copy; 2011 IEEE.

Number of references:12

Main heading:Shift registers

Controlled terms:Field programmable gate arrays (FPGA) - Nonlinear feedback - State feedback

Uncontrolled terms:Feedback functions - LFSR - Linear feedback - M sequence - Multi-bits - nonlinear feedback function - Nonlinear feedback functions - Pseudorandom sequences - State sequences

Classification code:721.3 Computer Circuits - 731.1 Control Systems

DOI:10.1109/ICECC.2011.6066489

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 325>

 

Accession number:20111213849913

Title:Supervised Gaussian process latent variable model for dimensionality reduction

Authors:Gao, Xinbo (1); Wang, Xiumei (1); Tao, Dacheng (2); Li, Xuelong (3)

Author affiliation:(1) School of Electronic Engineering, Xidian University, Xi'an 710071, China; (2) School of Computer Engineering, Nanyang Technological University, 639798 Singapore, Singapore; (3) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China

Corresponding author:Gao, X.(xbgao@mail.xidian.edu.cn)

Source title:IEEE Transactions on Systems, Man, and Cybernetics, Part B: Cybernetics

Abbreviated source title:IEEE Trans Syst Man Cybern Part B Cybern

Volume:41

Issue:2

Issue date:April 2011

Publication year:2011

Pages:425-434

Article number:5545418

Language:English

ISSN:10834419

CODEN:ITSCFI

Document type:Journal article (JA)

Publisher:Institute of Electrical and Electronics Engineers Inc., 445 Hoes Lane / P.O. Box 1331, Piscataway, NJ 08855-1331, United States

Abstract:The Gaussian process latent variable model (GP-LVM) has been identified to be an effective probabilistic approach for dimensionality reduction because it can obtain a low-dimensional manifold of a data set in an unsupervised fashion. Consequently, the GP-LVM is insufficient for supervised learning tasks (e.g., classification and regression) because it ignores the class label information for dimensionality reduction. In this paper, a supervised GP-LVM is developed for supervised learning tasks, and the maximum a posteriori algorithm is introduced to estimate positions of all samples in the latent variable space. We present experimental evidences suggesting that the supervised GP-LVM is able to use the class label information effectively, and thus, it outperforms the GP-LVM and the discriminative extension of the GP-LVM consistently. The comparison with some supervised classification methods, such as Gaussian process classification and support vector machines, is also given to illustrate the advantage of the proposed method. &copy; 2006 IEEE.

Number of references:37

Main heading:Principal component analysis

Controlled terms:Discriminant analysis - Gaussian distribution - Gaussian noise (electronic) - Supervised learning

Uncontrolled terms:Class labels - Data sets - Dimensionality reduction - Experimental evidence - Gaussian Processes - Generalized discriminant analysis - Latent variable - Latent variable models - Low-dimensional manifolds - Maximum a posteriori algorithm  - Probabilistic approaches - Probabilistic principal component analysis - Supervised classification

Classification code:713 Electronic Circuits - 716 Telecommunication; Radar, Radio and Television - 731.5 Robotics - 922 Statistical Methods - 922.2 Mathematical Statistics

DOI:10.1109/TSMCB.2010.2057422

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 326>

 

Accession number:20112514083055

Title:The study of combined invariants optimization method on aircraft recognition

Authors:Zhu, Xufeng (1); Ma, Caiwen (1)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Science, Xi'an, China; (2) Graduate University of Chinese Academy of Science, Beijing, China

Corresponding author:Zhu, X.(zhuxufeng@126.com)

Source title:2011 Symposium on Photonics and Optoelectronics, SOPO 2011

Abbreviated source title:Symp. Photonics Optoelectron., SOPO

Monograph title:2011 Symposium on Photonics and Optoelectronics, SOPO 2011

Issue date:2011

Publication year:2011

Article number:5780562

Language:English

ISBN-13:9781424465545

Document type:Conference article (CA)

Conference name:2011 Symposium on Photonics and Optoelectronics, SOPO 2011

Conference date:May 16, 2011 - May 18, 2011

Conference location:Wuhan, China

Conference code:85158

Sponsor:IEEE Photonics Society; IEEE Wuhan Section; Wuhan University; Optics and Photonics Society of Singapore; Shandong University

Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States

Abstract:The method, which is interested in controlling the stability of image invariant features at every stage, is proposed to extract and select new combined invariants for training classifier when aircraft types are recognized. First, a typical aircraft automatic recognition system based on images is analyzed. Second, Hu's moments, Affine moments, Normalized Moment of Inertia and Normalized Fourier Descriptors are introduced. Third, multiple images with different kinds of 3D aircrafts under various small space angles are collected and the above four invariants from these images are extracted. Fourth, the new combined invariants are constructed based on these four kinds of invariants and are sent to support vector machine classifier for recognizing aircraft types. At last, the simulation results are shown that the recognition rate will be improved apparently if the new optimized combined invariants are used to training the support vector machine classifier. &copy; 2011 IEEE.

Number of references:5

Main heading:Aircraft

Controlled terms:Aircraft control - Feature extraction - Image processing - Optimization - Optoelectronic devices - Photonics - Support vector machines - Three dimensional

Uncontrolled terms:Automatic recognition system - Combined invariants - Fourier descriptors - Image invariant - Moment of inertia - Multiple image - Optimization method - Recognition rates - Simulation result - Small space angle  - Support vector

Classification code:744 Lasers - 741.3 Optical Devices and Systems - 741 Light, Optics and Optical Devices - 723.5 Computer Applications - 723 Computer Software, Data Handling and Applications - 921.5 Optimization Techniques - 717.2 Optical Communication Equipment - 716 Telecommunication; Radar, Radio and Television - 712 Electronic and Thermionic Materials - 652.1 Aircraft, General - 652 Aircraft and Avionics - 717 Optical Communication

DOI:10.1109/SOPO.2011.5780562

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 327>

 

Accession number:20112814137357

Title:Study and simulation of the intensity modulation-Fourier transform spectropolarimeter

Authors:Wang, Xin-Quan (1); Xiangli, Bin (2); Huang, Min (2); Hu, Liang (1); Jing, Juan-Juan (1)

Author affiliation:(1) Laboratory of Spectral Imaging Technique, Xi'an Institute of Optics and Precision Mechanics, Chinese Acad. of Sci., Xi'an 710119, China; (2) Academy of Opto-Electronics, Chinese Acad. of Sci., Beijing 100190, China; (3) Graduate University of Chinese Acad. of Sci., Beijing 100049, China

Corresponding author:Hu, L.(huliang@opt.ac.cn)

Source title:Guang Pu Xue Yu Guang Pu Fen Xi/Spectroscopy and Spectral Analysis

Abbreviated source title:Guang Pu Xue Yu Guang Pu Fen Xi

Volume:31

Issue:7

Issue date:July 2011

Publication year:2011

Pages:1980-1984

Language:Chinese

ISSN:10000593

CODEN:GYGFED

Document type:Journal article (JA)

Publisher:Science Press, 18,Shuangqing Street,Haidian, Beijing, 100085, China

Abstract:Intensity modulation-Fourier transform spectropolarimetry (IMFTSP) is a novel technology that combines the intensity modulation spectropolarimetry and Fourier transform spectroscopy. The IMFTSP can obtain full Stokes spectropolarimetric parameters simultaneously, and maintains the throughput (Jacquinot) and multiplex (Fellgett) advantages. Yet aside from this, the IMFTSP has the advantage of reducing the complexity of data processing. The data collecting and spectropolarimetric parameters reconstruction processes were analyzed theoretically in this paper, the theoretical formulas are presented, and a whole process mathematical simulation for the IMFTSP system is introduced. The theory analysis and simulation results proved the feasibility of the IMFTSP.

Number of references:9

Main heading:Fourier transforms

Controlled terms:Data handling - Modulation - Spectroscopy

Uncontrolled terms:Analysis and simulation - Data collecting - Fourier Transform spectroscopy - Intensity modularion - Intensity modulations - Mathematical simulations - Parameters reconstruction - Spectropolarimeters - Spectropolarimetry - Theoretical formula  - Whole process

Classification code:716 Telecommunication; Radar, Radio and Television - 717 Optical Communication - 718 Telephone Systems and Related Technologies; Line Communications - 723.2 Data Processing and Image Processing - 801 Chemistry - 921.3 Mathematical Transformations

DOI:10.3964/j.issn.1000-0593(2011)07-1980-05

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

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Accession number:20112113998893

Title:LUT: A Lunar-based Ultraviolet Telescope

Authors:Cao, Li (1); Ruan, Ping (2); Cai, HongBo (1); Deng, JinSong (1); Hu, JingYao (1); Jiang, XiaoJun (1); Liu, ZhaoHui (2); Qiu, YuLei (1); Wang, Jing (1); Wang, Shen (1); Yang, JianFeng (2); Zhao, Fei (1); Wei, JianYan (1)

Author affiliation:(1) National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China; (2) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China

Corresponding author:Cao, L.(caoli@nao.cas.cn)

Source title:Science China: Physics, Mechanics and Astronomy

Abbreviated source title:SCI. CHINA Phys. Mech. Astron.

Volume:54

Issue:3

Issue date:March 2011

Publication year:2011

Pages:558-562

Language:English

ISSN:16747348

Document type:Journal article (JA)

Publisher:Science in China Press, 16 Donghuangchenggen North Street, Beijing, PR 100717, China

Abstract:The Lunar-based Ultraviolet Telescope (LUT) is a funded lunar-based ultraviolet telescope dedicated to continuously monitoring variable stars for as long as dozens of days and performing low Galactic latitude sky surveys. The slow and smooth spin of the Moon makes its step by step pointing strategy possible. A flat mirror mounted on a gimbal mount is configured to enlarge the sky coverage of the LUT. A Ritchey-Chre&acute;tien telescope with a Nasmyth focus configuration is adopted to reduce the total length of the system. A UV enhanced back illuminated AIMO CCD 47-20 chip together with the low noise electric design will minimize the instrumental influence on the system. The preliminary proposal for astrometric calibration and photometric calibration are also presented. &copy; Science China Press and Springer-Verlag Berlin Heidelberg 2011.

Number of references:16

Main heading:Telescopes

Controlled terms:Calibration - Moon - Optical instruments - Optical telescopes - Photometry - Stars

Uncontrolled terms:Back-illuminated - Flat mirrors - Galactic latitude - Low noise - Lunar probe - Photometric calibration - Photometric instrumentation - Sky coverage - Space-based - Step-by-step  - Total length - Ultraviolet - Ultraviolet telescopes - Variable stars

Classification code:657 Space Physics - 657.2 Extraterrestrial Physics and Stellar Phenomena - 941 Acoustical and Optical Measuring Instruments - 942 Electric and Electronic Measuring Instruments - 943 Mechanical and Miscellaneous Measuring Instruments - 944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments

DOI:10.1007/s11433-011-4255-7

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

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Accession number:20111413897554

Title:Study on scalable Coulombic degradation for estimating the lifetime of organic light-emitting devices

Authors:Zhang, Wenwen (1); Wu, Zhaoxin (2); Liang, Shixiong (2); Jiao, Bo (2); Zhang, Xinwen (2); Wang, Dawei (2); Hou, Xun (1); Chen, Zhijian (3); Gong, Qihuang (3)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (2) Key Laboratory for Physical Electronics and Devices of the Ministry of Education, School of Electronic and Information Engineering, Xi'an Jiaotong University, Xi'an 710049, China; (3) State Key Laboratory for Mesoscopic Physics, Department of Physics, Peking University, Beijing 100871, China

Corresponding author:Zhang, W.

Source title:Journal of Physics D: Applied Physics

Abbreviated source title:J Phys D

Volume:44

Issue:15

Issue date:April 20, 2011

Publication year:2011

Article number:155103

Language:English

ISSN:00223727

E-ISSN:13616463

CODEN:JPAPBE

Document type:Journal article (JA)

Publisher:Institute of Physics Publishing, Temple Back, Bristol, BS1 6BE, United Kingdom

Abstract:The luminance decays of organic light-emitting diodes (OLEDs) are investigated with initial luminance of 1000 to 20 000 cd m^-2 through a scalable Coulombic degradation and a stretched exponential decay. We found that the estimated lifetime by scalable Coulombic degradation deviates from the experimental results when the OLEDs work with high initial luminance. By measuring the temperature of the device during degradation, we found that the higher device temperatures will lead to instabilities of organic materials in devices, which is expected to result in the difference between the experimental results and estimation using the scalable Coulombic degradation. &copy; 2011 IOP Publishing Ltd.

Number of references:14

Main heading:Degradation

Controlled terms:Decay (organic) - Light emission - Light emitting diodes - Organic light emitting diodes (OLED)

Uncontrolled terms:Device temperature - Estimated lifetime - Organic light-emitting devices - Organic materials - Stretched exponential decay

Classification code:741.1 Light/Optics - 802.2 Chemical Reactions

DOI:10.1088/0022-3727/44/15/155103

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 330>

 

Accession number:20114014403656

Title:Research of transparent object by means of LED-based digital holography

Authors:Liu, Xianglian (1); Qin, Yi (3)

Author affiliation:(1) Energy Engineering College, Yulin University, Shanxi, 719000, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi an 710119, China; (3) College of Physics and Electronic Engineering, Nanyang Normal University, Henan, 473061, China

Corresponding author:Liu, X.(xianglian.liu@yahoo.com.en)

Source title:Proceedings of 2011 International Conference on Electronic and Mechanical Engineering and Information Technology, EMEIT 2011

Abbreviated source title:Proc. Int. Conf. Electron. Mech. Eng. Inf. Technol., EMEIT

Volume:6

Monograph title:Proceedings of 2011 International Conference on Electronic and Mechanical Engineering and Information Technology, EMEIT 2011

Issue date:2011

Publication year:2011

Pages:3130-3133

Article number:6023750

Language:English

ISBN-13:9781612840857

Document type:Conference article (CA)

Conference name:2011 International Conference on Electronic and Mechanical Engineering and Information Technology, EMEIT 2011

Conference date:August 12, 2011 - August 14, 2011

Conference location:Harbin, China

Conference code:86793

Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States

Abstract:In this paper, a new interferometer is proposed and employed to investigate transparent object by means of LED(light emitting diode)-based digital holography. The interferometer combines the advantages of Mach-Zehder interferometer and Michelson interferometer, it enable us to adjust the optical path difference of the two beams interference on a Mach-Zehder interferometer. Thus the interference fringe patterns of LED could be observed quickly and conveniently. First the principle of the new interferometer is stated and then it is compared with other interferometers. Secondly, LED-based phase-shifting digital holography is carried out to investigate transparent object. Both theory ant experiment results are presented. &copy; 2011 IEEE.

Number of references:10

Main heading:Light emitting diodes

Controlled terms:Computer generated holography - Holography - Information technology - Mechanical engineering - Michelson interferometers

Uncontrolled terms:Digital holography - Interference fringe pattern - Optical path difference - Phase-shifting digital holography - transparent object - Transparent objects - Two beams

Classification code:941.3 Optical Instruments - 903 Information Science - 746 Imaging Techniques - 743.1 Holographic Techniques - 743 Holography - 741.1 Light/Optics - 608 Mechanical Engineering, General

DOI:10.1109/EMEIT.2011.6023750

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

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Accession number:20110313588927

Title:Enhanced efficiency of multiple four-wave mixing induced by modulation instability in low-birefringence fibers

Authors:Liu, X.M. (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China

Corresponding author:Liu, X. M.(liuxm@opt.ac.cn)

Source title:Journal of Lightwave Technology

Abbreviated source title:J Lightwave Technol

Volume:29

Issue:2

Issue date:2011

Publication year:2011

Pages:179-185

Article number:5658089

Language:English

ISSN:07338724

CODEN:JLTEDG

Document type:Journal article (JA)

Publisher:Institute of Electrical and Electronics Engineers Inc., 445 Hoes Lane / P.O. Box 1331, Piscataway, NJ 08855-1331, United States

Abstract:Modulation instability (MI) induced by two strong beams and a weak beam via cross phase modulation is investigated. Multiple four-wave-mixing (FWM) processes associated with the MI in low-birefringence fibers are studied both theoretically and experimentally. The coupled-mode equations describing the MI-induced FWM nonlinear interactions between pump waves and sideband waves are derived. Theoretical and experimental results show that, on the assistance of MI, new optical frequencies can be generated quite efficiently from multiple FWM processes. More than eleven sidebands are experimentally achieved by the MI-driven multiple FWM processes. The transfer of energy from pumps to sidebands can be dramatically enhanced by the MI-induced parametric process. The experimental observations by using a piece of highly nonlinear dispersion-flattened photonic-crystal fiber confirm our theoretical predictions. &copy; 2011 IEEE.

Number of references:34

Main heading:Four wave mixing

Controlled terms:Birefringence - Fibers - Mixing - Nonlinear equations - Phase modulation - Stability

Uncontrolled terms:Birefringence fibers - Coupled mode equation - Cross phase modulation - Enhanced efficiency - Experimental observation - Four-wave-mixing process - Highly nonlinear - Modulation instabilities - modulation instability - Nonlinear interactions  - Optical frequency - Parametric process - Pump waves - Theoretical prediction - Weak beams

Classification code:951 Materials Science - 931 Classical Physics; Quantum Theory; Relativity - 921.1 Algebra - 817 Plastics and Other Polymers: Products and Applications - 961 Systems Science - 812 Ceramics, Refractories and Glass - 801 Chemistry - 741.1 Light/Optics - 716 Telecommunication; Radar, Radio and Television - 802.3 Chemical Operations

DOI:10.1109/JLT.2010.2097241

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 332>

 

Accession number:20120514730127

Title:Learning shape statistics for hierarchical 3D medical image segmentation

Authors:Zhang, Wuxia (1); Yuan, Yuan (1); Li, Xuelong (1); Yan, Pingkun (1)

Author affiliation:(1) Center for OPTical IMagery Analysis and Learning (OPTIMAL), Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, Shaanxi, China

Corresponding author:Zhang, W.

Source title:Proceedings - International Conference on Image Processing, ICIP

Abbreviated source title:Proc. Int. Conf. Image Process. ICIP

Monograph title:ICIP 2011: 2011 18th IEEE International Conference on Image Processing

Issue date:2011

Publication year:2011

Pages:2189-2192

Article number:6116068

Language:English

ISSN:15224880

ISBN-13:9781457713033

Document type:Conference article (CA)

Conference name:2011 18th IEEE International Conference on Image Processing, ICIP 2011

Conference date:September 11, 2011 - September 14, 2011

Conference location:Brussels, Belgium

Conference code:88213

Sponsor:IEEE; IEEE Signal Processing Society

Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States

Abstract:Accurate image segmentation is important for many medical imaging applications, whereas it remains challenging due to the complexity in medical images, such as the complex shapes and varied neighbor structures. This paper proposes a new hierarchical 3D image segmentation method based on patient-specific shape prior and surface patch shape statistics (SURPASS) model. In the segmentation process, a coarse-to-fine, two-stage strategy is designed, which contains global segmentation and local segmentation. In the global segmentation stage, patient-specific shape prior is estimated by using manifold learning techniques to achieve the overall segmentation. In the second stage, SURPASS is computed to solve the problem of poor segmentation at certain surface patches. The effectiveness of the proposed 3D image segmentation method has been demonstrated by the experiments on segmenting the prostate from a series of MR images. &copy; 2011 IEEE.

Number of references:8

Main heading:Image segmentation

Controlled terms:Medical imaging - Three dimensional

Uncontrolled terms:3D image segmentation - 3D medical image - Coarse-to-fine - Complex shapes - Global segmentation - Imaging applications - manifold learning - Medical images - MR images - Neighbor structures  - Segmentation process - Shape modeling - Shape priors - Shape statistics - surface patch shape statistics - Surface patches - Two stage

Classification code:741 Light, Optics and Optical Devices - 741.1 Light/Optics - 746 Imaging Techniques - 902.1 Engineering Graphics

DOI:10.1109/ICIP.2011.6116068

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 333>

 

Accession number:20110713659835

Title:A fast and low complexity approach for H.264/AVC intra mode decision

Authors:Su, Xiuqin (1); Ji, Lei (1); Li, Xiang (1)

Author affiliation:(1) Key Laboratory of Ultrafast Photoelectric Diagnostics Technology, Xi'An Institute of Optics and Precision Mechanics (IOPM), Chinese Academy of Sciences (CAS), Xi'an, Shaanxi 710119, China

Corresponding author:Su, X.(xqsu@opt.ac.cn)

Source title:Multimedia Tools and Applications

Abbreviated source title:Multimedia Tools Appl

Volume:52

Issue:1

Issue date:March 2011

Publication year:2011

Pages:65-76

Language:English

ISSN:13807501

E-ISSN:15737721

CODEN:MTAPFB

Document type:Conference article (CA)

Publisher:Springer Netherlands, Van Godewijckstraat 30, Dordrecht, 3311 GZ, Netherlands

Abstract:As one of the main features of H.264/AVC, intra prediction coding technique acts as a basis for encoding performance and efficiency. In official reference software Joint Model (JM), it employs the rate distortion optimization (RDO) technique to get to the best encoding performance. By full searching (FS) all of the candidate modes under the rule of RDO, peak-signal-noise-rate (PSNR) decreases to a very low level, but at the same time, the complexity of calculation increases a lot. Many researchers had devoted to searching the fast algorithm which can decrease the complexity, and had designed so many excellent and intelligent fast algorithms. In this paper we introduced a low complexity and fast approach for H.264/AVC intra prediction algorithm. The new approach is based on reducing the number of candidate modes for further RDO calculation, and decreasing the computational complicacy. It can decide the interpolation direction accurately by calculating the directional pixel-value differences (DPD) of target block, and then do statistic with the obtained values to choose the most probable modes. The experimental results demonstrate that the proposed algorithm can achieve more than 70% time saving than JM, but only a tiny degradation of encoding performance is brought in. &copy; 2010 Springer Science+Business Media, LLC.

Number of references:10

Main heading:Algorithms

Controlled terms:Encoding (symbols) - Forecasting - Image coding - Motion Picture Experts Group standards - Signal distortion

Uncontrolled terms:DPD - Encoding performance - Fast algorithms - H.264/AVC - Intra mode decision - Intra Prediction - Intra prediction algorithms - Joint models - Low complexity - Low level  - New approaches - Rate-distortion optimization - Reference software - Time savings

Classification code:716.1 Information Theory and Signal Processing - 723 Computer Software, Data Handling and Applications - 723.2 Data Processing and Image Processing - 921 Mathematics

DOI:10.1007/s11042-009-0452-z

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 334>

 

Accession number:20112114005801

Title:Terahertz-wave parametric oscillator with a misalignment-resistant tuning cavity

Authors:Sun, Bo (1); Li, Sanxing (1); Liu, Jinsong (1); Li, Enbang (3); Yao, Jianquan (1)

Author affiliation:(1) Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, China; (2) Institute of Photonics and Photonic Technology, Northwest University, Xi'an 710069, China; (3) CUDOS School of Physics, University of Sydney, Sydney, NSW 2006, Australia; (4) College of Precision and Instrument and Opto-electronics Engineering, Tianjin University, Tianjin 300072, China

Corresponding author:Sun, B.(sunbo_xt@yahoo.com.cn)

Source title:Optics Letters

Abbreviated source title:Opt. Lett.

Volume:36

Issue:10

Issue date:May 15, 2011

Publication year:2011

Pages:1845-1847

Language:English

ISSN:01469592

E-ISSN:15394794

CODEN:OPLEDP

Document type:Journal article (JA)

Publisher:Optical Society of America, 2010 Massachusetts Ave, NW, Washington, DC, DC 20036-1023, United States

Abstract:We demonstrate a terahertz-wave parametric oscillator (TPO) with a corner-cube resonator consisting of a cornercube prism (CCP) and a flat mirror. By using the cavity configuration proposed in this Letter, the generation of tunable monochromatic terahertz (THz) waves can be achieved just by rotating the flat mirror instead of rotating the TPO cavity relative to the pump beam. The THz-wave output intensity and pulse width can be controlled periodically by rotating the CCP around the cavity axis. The TPO stability against cavity misalignment is significantly improved by at least 1 to 2 orders of magnitude compared with the conventional plane-parallel resonator configuration. &copy; 2011 Optical Society of America.

Number of references:12

Main heading:Terahertz waves

Controlled terms:Alignment - Mirrors - Parametric oscillators - Resonators - Rotation

Uncontrolled terms:Cavity configuration - Corner cubes - Corner-cube resonators - Flat mirrors - Orders of magnitude - Output intensity - Pulse width - Pump beams - Resonator configuration - Terahertz (THz)-wave parametric oscillators  - Terahertz-wave parametric oscillators

Classification code:601.1 Mechanical Devices - 711 Electromagnetic Waves - 713.2 Oscillators - 741.3 Optical Devices and Systems

DOI:10.1364/OL.36.001845

Database:Compendex

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<RECORD 335>

 

Accession number:20114014403824

Title:Design and wavefront sensing for the segmented Spherical Primary Optical Telescope

Authors:Shengzhang, Kai (1); Fan, Xuewu (1); Li, Chuang (1); Liu, Kai (1)

Author affiliation:(1) Xi'An Institute of Optics and Precision Mechanics of CAS, Xi'an, Shanxi 710119, China; (2) Graduate School of CAS, Beijing 100039, China

Corresponding author:Shengzhang, K.(azhen8233@126.com)

Source title:Proceedings of 2011 International Conference on Electronic and Mechanical Engineering and Information Technology, EMEIT 2011

Abbreviated source title:Proc. Int. Conf. Electron. Mech. Eng. Inf. Technol., EMEIT

Volume:7

Monograph title:Proceedings of 2011 International Conference on Electronic and Mechanical Engineering and Information Technology, EMEIT 2011

Issue date:2011

Publication year:2011

Pages:3828-3831

Article number:6023831

Language:English

ISBN-13:9781612840857

Document type:Conference article (CA)

Conference name:2011 International Conference on Electronic and Mechanical Engineering and Information Technology, EMEIT 2011

Conference date:August 12, 2011 - August 14, 2011

Conference location:Harbin, China

Conference code:86793

Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States

Abstract:On account of the tight requirement of the high-resolution, the Segmented Primary Optical Telescope (SPOT) becomes the mainstream. Obviously, the use of a strongly aspheric form creates several intractable problems in manufacturing and subsequent optical testing of aspheric off-axis segments having different forms, the task of controlling a large number of aspheric segments for on-orbit cophasing is formidable, so the prospect of assembling the primary mirror from small, low-cost identical spherical mirror segments is very attractive. This paper will discourse upon the demand of the SPOT and analyze the advantages of segmented spherical primary mirror relative to aspheric. Besides these, the author will design an optical systems under the properties (D=1200mm, MTF &ge; 0.6), the optical designs use a full steerable, quasi-Cassegrain telescope in which the primary mirror uses spherical surface, then we will demonstrate its performance and prove the practicality of Spherical Primary Optical Telescope. Ultimately, we will introduce a multistage wavefront sensing and control strategy briefly for Diffraction-limited phasing. &copy; 2011 IEEE.

Number of references:7

Main heading:Optical telescopes

Controlled terms:Aspherics - Design - Diffraction - Information technology - Mechanical engineering - Mirrors - Optical testing - Orbits - Spheres - Telescopes  - Wavefronts

Uncontrolled terms:Diffraction limited - high-resokition - On-orbit - Primary mirrors - SPOT

Classification code:903 Information Science - 741.3 Optical Devices and Systems - 741.1 Light/Optics - 711.1 Electromagnetic Waves in Different Media - 711 Electromagnetic Waves - 655.2 Satellites - 631 Fluid Flow - 608 Mechanical Engineering, General - 408 Structural Design

DOI:10.1109/EMEIT.2011.6023831

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

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Accession number:20114114420288

Title:Numerical analysis and experimental research on active infrared thermographic NDT in composite materials

Authors:Wu, Cui-Qin (1); Wang, Wei-Ping (1); Yuan, Qi-Gang (1); Li, Yan-Jun (2); Zhang, Wei (3); Zhang, Xiang-Dong (4)

Author affiliation:(1) SICON OPTO-Electonic LTD., Xi'an 710043, China; (2) Northwestern Polytechnical University, Xi'an 710065, China; (3) Xi'an Research Inst. of Hi-Tech, Hongqing Town, Xi'an 710025, China; (4) No.203 Research Institute of China Ordance Industries, Xi'an 710068, China

Corresponding author:Wu, C.-Q.

Source title:Proceedings of SPIE - The International Society for Optical Engineering

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:8193

Monograph title:International Symposium on Photoelectronic Detection and Imaging 2011: Advances in Infrared Imaging and Applications

Issue date:2011

Publication year:2011

Article number:81930L

Language:English

ISSN:0277786X

CODEN:PSISDG

ISBN-13:9780819488343

Document type:Conference article (CA)

Conference name:International Symposium on Photoelectronic Detection and Imaging 2011: Advances in Infrared Imaging and Applications

Conference date:May 24, 2011 - May 24, 2011

Conference location:Beijing, China

Conference code:86819

Sponsor:Chinese Society of Astronautics

Publisher:SPIE, P.O. Box 10, Bellingham, WA 98227-0010, United States

Abstract:To estimate the disbond defects of the glass fiber composite materials applied in the solid rocket motor, active infrared thermographic NDT is researched. Firstly, the numerical analysis of the transient thermal wave distubance under the pulse heating stimulation is carried out using the finite element method. Then, the special experiment is arranged. The specimen including 3 disbond defects with diameter 10mm, 20mm and 30mm is pulse heated using 2 symmetric pulse heating sources, which the stimulation time is 2ms and the pulse energy is 4800J. The surface transient temperature is monitored by the infrared camera system. Finally, The experimental results are compared with the ultrasonic C-scan. Our research shows that the infrared thermography is a fast and effective inspection method for detecting defects of the diameter over 10mm and depth within 5mm in the composite materials. &copy; 2011 Copyright Society of Photo-Optical Instrumentation Engineers (SPIE).

Number of references:5

Main heading:Thermography (imaging)

Controlled terms:Composite materials - Finite element method - Glass fibers - Inspection - Nondestructive examination - Numerical methods - Research - Rocket engines - Rockets - Thermography (temperature measurement)  - Ultrasonic applications

Uncontrolled terms:Active infrared thermography - Disbond - Experimental research - Glass fiber composites - Infra-red cameras - Inspection methods - Pulse energies - Pulse-heating - Solid rocket motors - Surface transients  - Thermal wave - Ultrasonic C-scan

Classification code:951 Materials Science - 944.6 Temperature Measurements - 921.6 Numerical Methods - 913.3.1 Inspection - 901.3 Engineering Research - 811 Cellulose, Paper and Wood Products - 753.3 Ultrasonic Applications - 742.1 Photography - 654.2 Rocket Engines - 654.1 Rockets and Missiles - 421 Strength of Building Materials; Mechanical Properties - 415 Metals, Plastics, Wood and Other Structural Materials - 413 Insulating Materials

DOI:10.1117/12.898947

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

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Accession number:20111613925518

Title:Theoretical modeling and experimental verification for structural response of NOPD based on endochronic theory

Authors:Wang, Wei (1); Li, Yu Yan (2)

Author affiliation:(1) Space Optics Laboratory, Xi'an Institute of Optics and Precision Mechanics, CAS, Xi'an, 710119, China; (2) Department of Mechanical and Electrical Engineering, Xi'an Technological University, Xi'an, 710032, China

Corresponding author:Wang, W.(wangwei@opt.ac.cn)

Source title:Applied Mechanics and Materials

Abbreviated source title:Appl. Mech. Mater.

Volume:52-54

Monograph title:Advances in Mechanical Engineering

Issue date:2011

Publication year:2011

Pages:800-805

Language:English

ISSN:16609336

E-ISSN:16627482

ISBN-13:9783037850770

Document type:Conference article (CA)

Conference name:2011 1st International Conference on Mechanical Engineering, ICME 2011

Conference date:April 3, 2011 - April 4, 2011

Conference location:Phuket, Thailand

Conference code:84572

Sponsor:International Industrial Electronics Center; Shenzhen University; ACM Hong Kong Chapter

Publisher:Trans Tech Publications, P.O. Box 1254, Clausthal-Zellerfeld, D-38670, Germany

Abstract:Non-obstructive particle damping (NOPD) is a new composite damping technology based on traditional partical damping and impacting damping, and it has good vibration-reduced results. Through studying thermodynamics constraint condition for non-inverse variation of inner tissue structure of the material, the endochronic theory obtained variation regularity of inner variable, further gave out evolution path of specific non-inverse thermodynamics variable under specific condition, and thus the constitutive relationship of the material was obtained. Based on endochronic theory, an incremental form of the endochronic constitutive relationship of discrete particle was derived, and then penalty element was introduced to solve the connection problem between structure and discrete particle, lastly finite element dynamics equation of NOPD composite structure was constructed. Based on the model of NOPD composite structure, simulation and experiment for response of NOPD free beam were made. It indicated that applying endochronic theory to analyze the response of NOPD is rational, which supplied an effective method for engineering application of NOPD. &copy; Trans Tech Publications.

Number of references:5

Main heading:Constraint theory

Controlled terms:Algorithms - Composite structures - Computer simulation - Damping - Mechanical engineering - Structure (composition) - Thermodynamics - Tissue

Uncontrolled terms:Endochronic theory - Non-obstructive particle damping - Numerical algorithm - Structural response - Vibration-reduced

Classification code:951 Materials Science - 931.1 Mechanics - 921 Mathematics - 723.5 Computer Applications - 961 Systems Science - 723 Computer Software, Data Handling and Applications - 608 Mechanical Engineering, General - 461.2 Biological Materials and Tissue Engineering - 415 Metals, Plastics, Wood and Other Structural Materials - 641.1 Thermodynamics

DOI:10.4028/www.scientific.net/AMM.52-54.800

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

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Accession number:20112514073743

Title:Fabrication and characterization of Yb³⁺-doped gain-guided index-antiguided fiber with D-shaped inner cladding

Authors:Li, Weinan (1); Lu, Min (1); Yang, Zhi (1); Guo, Haitao (1); Wang, Pengfei (1); Peng, Bo (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Procession Mechanics, Chinese Academy of Sciences, Xi'an 710119, China

Corresponding author:Lu, M.(lumin@opt.ac.cn)

Source title:Journal of the Optical Society of America B: Optical Physics

Abbreviated source title:J Opt Soc Am B

Volume:28

Issue:6

Issue date:June 2011

Publication year:2011

Pages:1498-1501

Language:English

ISSN:07403224

CODEN:JOBPDE

Document type:Journal article (JA)

Publisher:Optical Society of America, 2010 Massachusetts Ave, NW, Washington, DC, DC 20036-1023, United States

Abstract:Yb3doped gain-guided index-antiguided fibers based on phosphate glasses are drawn using the rod-in-tube technique. These fibers have a circular core with 200 &mu;m diameter and a D-shaped inner cladding with a 630=480 &mu;m diameter for the longer/shorter axis. The negative index profile is present in these fibers, in which the core index of refraction is 0.019% lower than that of the inner cladding. Moreover, their laser amplifier characteristics are experimentally demonstrated, and the method of further improvement in laser performance is suggested. &copy; 2011 Optical Society of America.

Number of references:15

Main heading:Fibers

Controlled terms:Refractive index - Ytterbium

Uncontrolled terms:Index of refraction - Inner cladding - Laser amplifiers - Laser performance - Negative index - Phosphate glass

Classification code:547.2 Rare Earth Metals - 741.1 Light/Optics - 812 Ceramics, Refractories and Glass - 817 Plastics and Other Polymers: Products and Applications

DOI:10.1364/JOSAB.28.001498

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 339>

 

Accession number:20111413890987

Title:Alignment of off-axis conic aspheric mirrors in stigmatic null test

Authors:Chen, Qinfang (1); Li, Yingcai (1); Ma, Zhen (1); Li, Xuyang (1); Liang, Shitong (1)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, Shaanxi 710119, China; (2) Graduate University of Chinese Academy of Sciences, Beijing 100049, China

Corresponding author:Chen, Q.(chenqingfang20060718@126.com)

Source title:Guangxue Xuebao/Acta Optica Sinica

Abbreviated source title:Guangxue Xuebao

Volume:31

Issue:2

Issue date:February 2011

Publication year:2011

Pages:0222001

Language:Chinese

ISSN:02532239

CODEN:GUXUDC

Document type:Journal article (JA)

Publisher:Chinese Optical Society, P.O. Box 80, Xi'an, 710068, China

Abstract:During interferometric testing, an accurate evaluation of the surface information is one of the key factors in realizing deterministic manufacturing of off-axis aspheric mirrors. The method used in the analysis of wavefront aberration due to centring error in optical system is valid for test piece misalignment in an interferometric setting as well. The mathematic model of error separation is developed. In experiment, the test result of an off-axis aspheric mirror after alignment is 0.037 &lambda; (RMS, &lambda;=0.6328 mu;m), the test efficiency is improved effectively.

Number of references:11

Main heading:Optical testing

Controlled terms:Alignment - Aspherics - Interferometry - Mirrors - Optical systems - Surface testing

Uncontrolled terms:Alignment error - Aspheric mirrors - Aspheric testing - Error separation - Interferometric testing - Key factors - Mathematic model - Null test - Off-axis - Off-axis aspheric  - Optical fabrication - Surface information - Test efficiency - Test pieces - Test results - Wavefront aberrations

Classification code:423.2 Non Mechanical Properties of Building Materials: Test Methods - 601.1 Mechanical Devices - 741.3 Optical Devices and Systems - 941.4 Optical Variables Measurements

DOI:10.3788/AOS201131.0222001

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

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Accession number:20115214631568

Title:Design of catadioptric infrared optical system with wide field

Authors:Wang, Wen-Fang (1); Yang, Xiao-Xu (1); Zhang, Hen-Jin (1); Li, Gang (1)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Science, Xi'an, 710119, China; (2) Graduate University of Chinese Academy of Science, Beijing, 100039, China

Corresponding author:Wang, W.-F.(s09031@opt.cn)

Source title:Procedia Engineering

Abbreviated source title:Procedia Eng.

Volume:15

Monograph title:2011 International Conference on Advanced in Control Engineering and Information Science, CEIS 2011

Issue date:2011

Publication year:2011

Pages:4568-4573

Language:English

ISSN:18777058

Document type:Conference article (CA)

Conference name:2011 International Conference on Advanced in Control Engineering and Information Science, CEIS 2011

Conference date:August 18, 2011 - August 19, 2011

Conference location:Dali, Yunnam, China

Conference code:87786

Publisher:Elsevier Ltd, Langford Lane, Kidlington, Oxford, OX5 1GB, United Kingdom

Abstract:Many infrared optical systems usually adopt catoptric systems. Because that the system does not have chromatism and restriction of the working wave. But the coma and astigmatism of off-axis point is large, so the field of view that we can use is restricted. In the needs of infrared early warning system for sea-based, a large field of catadioptric infrared optical system is designed. The optical system breaks the limitation of traditional reflective optical system with small field of view. The system adopts two methods to expand the field of view. One is adding the calibration group before the reflecting system. The other one is that the primary and secondary reflective mirror system are used of Mangin mirror. So the optical system avoids any high-order aspheric surface. In order to match the cold aperture exactly, lens group is inserted after the first image plane. The system's field can reach 8 degree, and the ratio of obscuration is less than 0.4, and also optical transfer function achieves diffraction limit. &copy; 2011 Published by Elsevier Ltd.

Number of references:4

Main heading:Optical systems

Controlled terms:Design - Information science - Mirrors - Optical instruments - Optical transfer function

Uncontrolled terms:Aspheric surfaces - Diffraction limits - Early Warning System - Field of views - High-order - Image plane - Infrared optical systems - Large filed - Mangin mirrors - Off-axis  - Reflective mirrors - Reflective optical system - Wide field

Classification code:408 Structural Design - 741.1 Light/Optics - 741.3 Optical Devices and Systems - 903 Information Science

DOI:10.1016/j.proeng.2011.08.858

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

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Accession number:20114114420330

Title:Design of high ratio middle infrared continuous zoom optical system

Authors:Fan, Zheyuan (1); Cao, Jianzhong (2); Yang, Hongtao (1); Qu, Enshi (2); Wu, Dengshan (2)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Science, Xi'an 710119, China; (2) Graduate University, Chinese Academy of Sciences, Beijing 100039, China

Corresponding author:Fan, Z.

Source title:Proceedings of SPIE - The International Society for Optical Engineering

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:8193

Monograph title:International Symposium on Photoelectronic Detection and Imaging 2011: Advances in Infrared Imaging and Applications

Issue date:2011

Publication year:2011

Article number:81931R

Language:English

ISSN:0277786X

CODEN:PSISDG

ISBN-13:9780819488343

Document type:Conference article (CA)

Conference name:International Symposium on Photoelectronic Detection and Imaging 2011: Advances in Infrared Imaging and Applications

Conference date:May 24, 2011 - May 24, 2011

Conference location:Beijing, China

Conference code:86819

Sponsor:Chinese Society of Astronautics

Publisher:SPIE, P.O. Box 10, Bellingham, WA 98227-0010, United States

Abstract:In recent years, the demand for infrared zoom systems is increasing in proportion with the development of infrared technology and its applications. To meet this demand a variety of zoom lenses have been designed. Infrared cameras operating in the 3-5&mu;m spectral band are used in a wide variety of applications such as targeting, rescue, guidance and surveillance systems as well as other equipment. This paper using cool 320x240 detector with staring focal plane array and secondary imaging, a mid-wave optical system using mechanical-compensated with large-aperture and a zoom range of 10:1 is designed. The Pixel Dimensions of the detector is 30&mu;m, and the wavelength between 3.7&mu;m &sim;4.8&mu;m.The system adopts negative group variable times and positive group of compensation which can realize 33mm&sim;330mm continuous zoom and FOV =20.61&deg;&sim;2.08&deg;,it consists of 7 lenses including 3 aspheric surface. The length of the system is 262mm with the reflection mirror multipass optical path. The results show that the modulation transfer function(MTF)are above 0.4 within the whole focal range at spatial frequency of 17 lp/mm, and Root Mean Square (RMS) value of spot diameter were smaller than the Pixel Dimensions. After the image quality being optimized, the narcissus analysis is done and 100% cold shield efficiency is obtained. Finallythe monotonic and smooth Cam curve is given. The curve shows that the imaging plane is stable and the cam is easy to process. The system has advantages of simple structure, high image quality and short zoom path etc. &copy; 2011 Copyright Society of Photo-Optical Instrumentation Engineers (SPIE).

Number of references:7

Main heading:Optical systems

Controlled terms:Cams - Detectors - Image quality - Infrared imaging - Infrared radiation - Optical design - Pixels

Uncontrolled terms:Aspheric surfaces - Cam curve - Cold shield - cold shield efficiency - continuous zoom - High image quality - Imaging plane - Infra-red cameras - Infrared technology - Large aperture  - Middle infrared - Multi-pass - Optical path - Pixel dimension - Reflection mirrors - Root mean square values - Simple structures - Spatial frequency - Spectral band - Spot diameter  - Surveillance systems - Variable time - Zoom lens - Zoom optical system - Zoom systems

Classification code:601.3 Mechanisms - 723.5 Computer Applications - 741 Light, Optics and Optical Devices - 914 Safety Engineering

DOI:10.1117/12.900176

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

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Accession number:20110713659110

Title:Morphology of NaNdF<inf>4</inf> nanocrystals from Nd(C<inf>3</inf>H <inf>7</inf>COO)<inf>3</inf>&middotPhen and Nd(NO<inf>3</inf>) <inf>3</inf>&middotPhen (Phen, 1,10-phenanthroline) as neodymium precursors

Authors:Cui, Kai (1); Gao, Chao (3); Cui, Xiaoxia (1); She, Jiangbo (1); Peng, Bo (4); Wei, Wei (4)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences (CAS), Xi'an 710119, China; (2) Graduate School of the Chinese Academy of Sciences, Beijing 100039, China; (3) Xi'An Modern Chemistry Research Institute, Xi'an 710065, China; (4) Institute of Advanced Materials, Nanjing University of Posts and Telecommunications, Nanjing 210003, China

Corresponding author:Peng, B.(bpeng@opt.ac.cn)

Source title:Journal of Rare Earths

Abbreviated source title:J Rare Earth

Volume:29

Issue:1

Issue date:January 2011

Publication year:2011

Pages:20-23

Language:English

ISSN:10020721

CODEN:JREAE6

Document type:Journal article (JA)

Publisher:Chinese Rare Earth Society, 2 Xinjiekouwai Dajie, Beijing, 100088, China

Abstract:A series of NaNdF<inf>4</inf> nanocrystals was synthesized via a facile hydrothermal route with Nd(C<inf>3</inf>H<inf>7</inf>COO)<inf>3</inf>&middot Phen and Nd(NO<inf>3</inf>)<inf>3</inf>&middotPhen (Phen, 1,10-phenanthroline) as the Nd precursors. Distinct effect of the neutral donor ligand (Phen) on the morphology of NaNdF<inf>4</inf> nanocrystals was demonstrated. When Nd(C <inf>3</inf>H<inf>7</inf>COO)<inf>3</inf>&middotPhen was chosen and the hydrothermal reaction temperature was controlled at 220 &deg;C, the NaNdF <inf>4</inf> nanocrystals with uniform short nanorod shape were obtained. The sizes of the as-prepared nanorods could be tuned by changing the hydrothermal temperatures. This method provided a useful way for the preparation of sodium rare-earth fluoride nanocrystals with controlled shapes and sizes. &copy; 2011 The Chinese Society of Rare Earths.

Number of references:18

Main heading:Neodymium

Controlled terms:Morphology - Nanocrystals - Nanorods - Rare earths - Sodium

Uncontrolled terms:Controlled shape - Fluoride nanocrystals - hydrothermal process - Hydrothermal reaction - Hydrothermal routes - Hydrothermal temperature - NaNdF4 - Neutral donor - Phenanthrolines

Classification code:481.2 Geochemistry - 547.2 Rare Earth Metals - 549.1 Alkali Metals - 761 Nanotechnology - 933 Solid State Physics - 951 Materials Science

DOI:10.1016/S1002-0721(10)60399-7

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 343>

 

Accession number:20114014386518

Title:Optical design of two-step zoom system under visible light for a certain theodolite

Authors:Zhou, Ke (1); Yang, Jianfeng (2)

Author affiliation:(1) Graduate University of Chinese Academy of Science, Beijing, 10039, China; (2) Key Laboratory of Spectrum Imaging Technology, Xi'an Institute of Optics and Precision Mechanics, CAS, Shaanxi Xi'an, 710119, China

Corresponding author:Zhou, K.(deokeap@qq.com)

Source title:ICEOE 2011 - 2011 International Conference on Electronics and Optoelectronics, Proceedings

Abbreviated source title:ICEOE - Int. Conf. Electron. Optoelectron., Proc.

Volume:3

Monograph title:ICEOE 2011 - 2011 International Conference on Electronics and Optoelectronics, Proceedings

Issue date:2011

Publication year:2011

Pages:V3440-V3444

Article number:6013403

Language:English

ISBN-13:9781612842738

Document type:Conference article (CA)

Conference name:2011 International Conference on Electronics and Optoelectronics, ICEOE 2011

Conference date:July 29, 2011 - July 31, 2011

Conference location:Dalian, China

Conference code:86661

Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States

Abstract:Starting from the application background and the detector parameters, this paper computed the optical and structural parameters of the system. The basic design idea is dividing a large-scale and complicated system into several modules and allocating the design requirements to each subsystem reasonably. Every optical subsystem is independent, for all of them have reached almost a high image quality, as well as they can correct the aberration caused by other parts of the system. Connected the subsystems together by using ZEMAX, there formed a practical optical system of photoelectric theodolite. In the visible band of light, the aperture is 450mm, the long focal length is 4000mm with its maximum field 2&omega;=26.0' while the short focal length is 2000mm with its maximum field 2&omega;=51.9'. The value of MTF at 50lp/mm in every field is higher than 0.6. The image quality of the system is close to diffractive limit. &copy; 2011 IEEE.

Number of references:9

Main heading:Optical design

Controlled terms:Image quality - Light - Optical systems - Optoelectronic devices - Photoelectricity

Uncontrolled terms:Complicated systems - Design ideas - Design requirements - Detector parameters - Focal lengths - High image quality - Optical sub-systems - Photoelectric theodolite - Structural parameter - Subsystem  - Theodolite - Visible band - Visible light - Zoom systems

Classification code:741 Light, Optics and Optical Devices

DOI:10.1109/ICEOE.2011.6013403

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

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Accession number:20114014386421

Title:A novel LED lens for rotationally symmetric uniform illumination

Authors:Yan, Xingtao (1); Yang, Jianfeng (1); Bu, Fan (1); Zhang, Guoqi (3)

Author affiliation:(1) Key Laboratory of Spectrum Imaging Technology, Xi'an Institute of Optics and Precision Mechanics, CAS, Shaanxi Xi'an, 710119, China; (2) Graduate School of CAS, Beijing, 10039, China; (3) Xi'an ZKMT Electronic Technology Equipment Co., Ltd., Shaanxi Xi'an 710119, China

Corresponding author:Yan, X.(ytop31@163.com)

Source title:ICEOE 2011 - 2011 International Conference on Electronics and Optoelectronics, Proceedings

Abbreviated source title:ICEOE - Int. Conf. Electron. Optoelectron., Proc.

Volume:3

Monograph title:ICEOE 2011 - 2011 International Conference on Electronics and Optoelectronics, Proceedings

Issue date:2011

Publication year:2011

Pages:V382-V385

Article number:6013306

Language:English

ISBN-13:9781612842738

Document type:Conference article (CA)

Conference name:2011 International Conference on Electronics and Optoelectronics, ICEOE 2011

Conference date:July 29, 2011 - July 31, 2011

Conference location:Dalian, China

Conference code:86661

Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States

Abstract:Traditional LED (light emitting diode) packaging always adopts hemisphere lens, and can ensure high light output efficiency, but its radiation pattern yields Lambert distribution and is non-uniformity. To enable LED light sources be applied in uniform illumination system, a method to obtain freeform LED lens based on energy equipartition and tangent iteration is proposed. Firstly, according to the Lambertian distribution of LED light intensity and its rotationally symmetric peculiarity, the LED emission angle is divided into N parts in Two-dimensional coordinate system, and the energy contained in each part is equal; Secondly, the target plane is divided into N equal areas along its radii, and the discrete points are corresponding to the N parts of emission angle. So that if the energy in each divided solid angle is controlled to illuminate the equal divided area, the illumination of each corresponding micro-belt on the target plane will be uniform; Finally, to avoid the total reflection of large emission angle rays, the designed lens will refract the rays with 0&sim;450 emission angle and reflect the rays with 450&sim;900 emission angle. Choosing an initial point on the freeform generatrix, and using Snell equation and tangent iteration method, the coordinates of all points on the freeform generatrix are obtained, which could be rotated into the freeform surface of the lens. The simulation results using the designed LED lens show that for a rotationally symmetric target plane the illumination uniformity is near to 90% and the energy efficiency is higher than 95%. &copy; 2011 IEEE.

Number of references:11

Main heading:Light emitting diodes

Controlled terms:Energy efficiency - Inertial confinement fusion - Light - Light sources - Optoelectronic devices

Uncontrolled terms:Applied optics - Co-ordinate system - Discrete points - Emission angle - Energy equipartition - Free-form surface - Freeforms - Illumination uniformity - Initial point - Iteration method  - Lambertian - LED light source - LED lights - Light-output efficiency - Nonimaging optics - Nonuniformity - Solid angle - Target plane - Total reflection - Uniform illumination

Classification code:525.2 Energy Conservation - 621.2 Fusion Reactors - 741.1 Light/Optics - 741.3 Optical Devices and Systems

DOI:10.1109/ICEOE.2011.6013306

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

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Accession number:20120514730566

Title:A novel alternative algorithm for limited angle tomography

Authors:Lu, Xiaoqiang (1); Yuan, Yuan (1); Yan, Pingkun (1); Li, Xuelong (1)

Author affiliation:(1) Center for OPTical IMagery Analysis and Learning (OPTIMAL), Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, Shaanxi, China

Corresponding author:Lu, X.

Source title:Proceedings - International Conference on Image Processing, ICIP

Abbreviated source title:Proc. Int. Conf. Image Process. ICIP

Monograph title:ICIP 2011: 2011 18th IEEE International Conference on Image Processing

Issue date:2011

Publication year:2011

Pages:409-412

Article number:6116536

Language:English

ISSN:15224880

ISBN-13:9781457713033

Document type:Conference article (CA)

Conference name:2011 18th IEEE International Conference on Image Processing, ICIP 2011

Conference date:September 11, 2011 - September 14, 2011

Conference location:Brussels, Belgium

Conference code:88213

Sponsor:IEEE; IEEE Signal Processing Society

Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States

Abstract:This paper studies incomplete data problems of circular cone-beam computed tomography, which occur frequently in medical imaging and industrial imaging. The incomplete data problems in which projection data are only available in an angular range can be attributed to the limited angle tomography. Limited angle tomography is a severely ill-posed inverse problem. In recent years, image reconstruction based on total variation (TV) was employed to reduce the problem and gave better performance on edge-preserving reconstruction. However, the artificial parameter can only be determined through considerable experimentation. In this paper, an alternating minimization method based on TV is proposed to reduce the data insufficiency in tomographic imaging. This novel alternating minimization method provides a robust and effective reconstruction without any artificial parameter in the iterative processes, by using the TV as a multiplicative constraint. The results demonstrate that this new reconstruction method brings satisfactory performance. &copy; 2011 IEEE.

Number of references:13

Main heading:Medical imaging

Controlled terms:Computerized tomography - Image reconstruction - Inverse problems - Medical problems - Tomography

Uncontrolled terms:Alternating minimization - Alternative algorithms - Angular range - Artificial parameters - Cone-beam computed tomography - Edge preserving - ILL-posed inverse problem - Incomplete data - Iterative process - Limited-angle tomography  - Projection data - Reconstruction method - Tomographic imaging - Total variation

Classification code:461.7 Health Care - 531 Metallurgy and Metallography - 741 Light, Optics and Optical Devices - 746 Imaging Techniques - 801 Chemistry - 921 Mathematics

DOI:10.1109/ICIP.2011.6116536

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 346>

 

Accession number:20112314032151

Title:Nonlinear frequency conversion in bismuth-doped tellurite suspended core fiber

Authors:Ryasnyanskiy, Aleksandr (1); Lin, Aoxiang (1); Belwalkar, Amit (3); Guintrand, Cyril (1); Biaggio, Ivan (1); Toulouse, Jean (1)

Author affiliation:(1) Center for Optical Technologies and Physics Department, Lehigh University, Bethlehem, PA 18015, United States; (2) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics (XIOPM), Chinese Academy of Sciences (CAS), Xi'an 710119, China; (3) Mechanical Engineering and Mechanics Department, Lehigh University, Bethlehem, PA 18015, United States

Corresponding author:Ryasnyanskiy, A.(ryasn2000@yahoo.com)

Source title:Optics Communications

Abbreviated source title:Opt Commun

Volume:284

Issue:16-17

Issue date:August 1, 2011

Publication year:2011

Pages:3977-3979

Language:English

ISSN:00304018

CODEN:OPCOB8

Document type:Journal article (JA)

Publisher:Elsevier, P.O. Box 211, Amsterdam, 1000 AE, Netherlands

Abstract:We have developed a new kind of tellurite glass with composition 70.5TeO<inf>2</inf>-12ZnO-10Na<inf>2</inf>O-7.5Bi<inf>2</inf>O<inf>3</inf> by conventional melting-quenching techniques. A suspended-core fiber (SCF) with a triangular-shaped core (~ 2.9 &mu;m) has been drawn from an extruded perform. Several nonlinear frequency conversion processes are being demonstrated, which point to the potential of such a fiber. &copy; 2011 Elsevier B.V. All rights reserved.

Number of references:22

Main heading:Fibers

Controlled terms:Bismuth - Glass - Sodium - Tellurium compounds - Zinc oxide

Uncontrolled terms:Bismuth-doped - Melting-quenching techniques - Nonlinear frequency conversion - Parametric generation - Suspended core fiber - Tellurite glass - Third-harmonic generation

Classification code:549.1 Alkali Metals - 549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals - 804.2 Inorganic Compounds - 812 Ceramics, Refractories and Glass - 812.3 Glass - 817 Plastics and Other Polymers: Products and Applications

DOI:10.1016/j.optcom.2011.04.019

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 347>

 

Accession number:20114414470004

Title:Analysis of birefringent and dispersive properties of photonic crystal fibers

Authors:Lu, S. (1); Li, W. (1); Guo, H. (1); Lu, M. (1)

Author affiliation:(1) State Key Laboratory Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics (XIOPM), Chinese Academy of Sciences (CAS), Xi'an 710119, China; (2) Graduate College of Chinese Academy of Science, Beijing 100049, China

Corresponding author:Lu, M.(lumin@opt.ac.cn)

Source title:Applied Optics

Abbreviated source title:Appl. Opt.

Volume:50

Issue:30

Issue date:October 20, 2011

Publication year:2011

Pages:5798-5802

Language:English

ISSN:1559128X

E-ISSN:15394522

CODEN:APOPAI

Document type:Journal article (JA)

Publisher:Optical Society of America, 2010 Massachusetts Ave, NW, Washington, DC, DC 20036-1023, United States

Abstract:Two types of high birefringence photonic crystal fiber (PCF) which import four or six big circular air holes near the elliptical-hole are proposed. Their birefringent and dispersive properties are analyzed by full-vector finite-element method (FEM). Numerical analysis demonstrates that importing the big circular hole near the center of elliptical-hole PCFs can achieve a high birefringence. When the ratio (d= &Lambda;) of diameter to hole spacing is larger than 0.8, the proposed two types of PCF have a larger birefringence than that of sole elliptical air hole ones. When the ratio d=&Lambda; is equal to 0.95, the birefringences of these two types PCF can be as high as 4:27 &times; 10?³ and 5:09 &times; 10?³ at the wavelength of 1:55 &mu; m, respectively. Besides, PCF with the four big circular air holes has a large negative dispersion at the long wavelength in x-polarized mode, which indicates a potential in single-polarized mode dispersion compensation. &copy; 2011 Optical Society of America.

Number of references:30

Main heading:Holey fibers

Controlled terms:Birefringence - Crystal whiskers - Dispersion (waves) - Finite element method - Nonlinear optics - Photonic crystals

Uncontrolled terms:Air holes - Circular air-holes - Circular holes - Dispersive properties - High birefringence - Large negative dispersion - Long wavelength

Classification code:711.1 Electromagnetic Waves in Different Media - 741 Light, Optics and Optical Devices - 801.4 Physical Chemistry - 921.6 Numerical Methods - 951 Materials Science

DOI:10.1364/AO.50.005798

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

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Accession number:20111213782616

Title:A review of super-resolution restoration from image sequences

Authors:Xu, Zhigang (1); Su, Xiuqin (1)

Author affiliation:(1) Key Laboratory of Ultrafast Photoelectric Diagnostics Technology, Xi'An Institute of Optics and Precision Mechanics, CAS, Xi'an 710119, China; (2) Graduate University of Chinese Academy of Sciences, Beijing 100049, China; (3) School of Computer and Communication, Lanzhou University of Technology, Lanzhou 730050, China

Corresponding author:Xu, Z.(yangzij@lut.cn)

Source title:Advanced Materials Research

Abbreviated source title:Adv. Mater. Res.

Volume:204-210

Monograph title:Advanced Research on Industry, Information System and Material Engineering

Issue date:2011

Publication year:2011

Pages:1336-1341

Language:English

ISSN:10226680

ISBN-13:9783037850275

Document type:Conference article (CA)

Conference name:2011 International Conference on Industry, Information System and Material Engineering, IISME2011

Conference date:April 16, 2011 - April 17, 2011

Conference location:Guangzhou, China

Conference code:84263

Sponsor:International Science and Education Researcher Association; Beijing Spon Research Institution; Beijing Gireida Education Co.Ltd.

Publisher:Trans Tech Publications, P.O. Box 1254, Clausthal-Zellerfeld, D-38670, Germany

Abstract:Super-resolution (SR) restoration produces one or a set of high resolution images from low-resolution observations. In particular, SR restoration involves many multidisciplinary studies. A review on recent SR restoration approaches was given in this paper. First, we introduced the characteristics and framework of SR restoration. The state of the art in SR restoration was surveyed by taxonomy. Then we summarized and analyzed the existing algorithms of registration and reconstruction. A comparison of performing differences between these methods would only be valid given. After that we discussed the SR problems of color images and compressed videos. At last, we concluded with some thoughts about future directions.

Number of references:35

Main heading:Restoration

Controlled terms:Color - Image compression - Information systems - Optical resolving power

Uncontrolled terms:Color images - Compressed video - Future directions - High resolution image - Image sequence - Image-restoration - Registration - State of the art - Super resolution - Super-resolution restoration

Classification code:402 Buildings and Towers - 409 Civil Engineering, General - 741 Light, Optics and Optical Devices - 741.1 Light/Optics - 903.2 Information Dissemination

DOI:10.4028/www.scientific.net/AMR.204-210.1336.

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

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Accession number:20114714549392

Title:Image sequence registration based on wavelet transformation and improved multi-restriction criterion

Authors:Xu, Zhigang (1); Su, Xiuqin (1)

Author affiliation:(1) Key Laboratory of Ultrafast Photoelectric Diagnostics Technology, Xi'an Institute of Optics and Precision Mechanics of CAS, Xi'an 710119, China; (2) Graduate University of Chinese Academy of Sciences, Beijing 100049, China; (3) School of Computer and Communication, Lanzhou University of Technology, Lanzhou 730050, China

Corresponding author:Xu, Z.(yangzij@lut.cn)

Source title:Yi Qi Yi Biao Xue Bao/Chinese Journal of Scientific Instrument

Abbreviated source title:Yi Qi Yi Biao Xue Bao

Volume:32

Issue:10

Issue date:October 2011

Publication year:2011

Pages:2261-2266

Language:Chinese

ISSN:02543087

CODEN:YYXUDY

Document type:Journal article (JA)

Publisher:Science Press, 18,Shuangqing Street,Haidian, Beijing, 100085, China

Abstract:Image sequence registration is a key technique for super-resolution reconstruction. To improve the accuracy and speed of image registration, a new method was proposed to register consecutive frames based on wavelet transformation and improved multi-restriction criterion. At first, the wavelet image pyramids of the reference frame and sensed frame are generated to narrow the search space. The feature points are found using Harris detector. Then using the improved multi-restriction criterion, the matching feature points are extracted from the highest level of the image pyramids. Least squares technique is employed to calculate the initial registration parameters. Then the coarse-to-fine hierarchical strategy is applied. The estimates of the mapping function parameters are gradually improved at the following level of the pyramids. Finally, simulated images and actual images were used to carry out test. Experimental results on the image sequences demonstrate that the presented method can quickly obtain registration parameters with high accuracy.

Number of references:18

Main heading:Image registration

Controlled terms:Wavelet transforms

Uncontrolled terms:Coarse-to-fine - Euclidean distance - Gray scale - Gray similarity - Harris detector - Image pyramids - Image sequence - Key techniques - Least squares techniques - Mapping functions  - Multi-resolutions - Reference frame - Search spaces - Simulated images - Super-resolution reconstruction - Wavelet image - Wavelet transformations

Classification code:723.2 Data Processing and Image Processing - 921.3 Mathematical Transformations

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 350>

 

Accession number:20113114199178

Title:Calculations on optical path difference of a high resolution reflecting scanning Fourier transform spectrometry

Authors:Wei, Ruyi (1); Zhang, Xuemin (2); Zhou, Jinsong (4); Zhou, Sizhong (2); Gao, Xiaohui (1); Wei, Junxia (1); Wang, Le (1)

Author affiliation:(1) Key Laboratory of Spectral Imaging Technology, Xi'an, Shaanxi 710119, China; (2) Xi'an Institute of Optics and Precision Mechanics, Chinese Acad. of Sci., Xi'an, Shaanxi 710119, China; (3) Graduate University of Chinese Acad. of Sci., Beijing 100049, China; (4) Academy of Opto-Electronics, Chinese Acad. of Sci., Beijing 100190, China

Corresponding author:Zhou, J.(jszhou@opt.ac.cn)

Source title:Guangxue Xuebao/Acta Optica Sinica

Abbreviated source title:Guangxue Xuebao

Volume:31

Issue:7

Issue date:July 2011

Publication year:2011

Article number:0730001

Language:Chinese

ISSN:02532239

CODEN:GUXUDC

Document type:Journal article (JA)

Publisher:Chinese Optical Society, P.O. Box 80, Xi'an, 710068, China

Abstract:A new high resolution reflecting scanning Fourier transform spectrometry produces nonlinear optical path difference (OPD) by rotating two tilted plane mirrors. OPD plays an important role in evaluating the performance and parameters and designing the spectrometry. Based on analyzing the principle of this reflecting scanning Fourier transform spectrometry, we adopt two methods to study OPD. One method is conventional tracing rays method by tracing rays following the Malus law, the other is novel point-image method by using mirror imaging principle and computer simulation to calculate OPD. The general expression of OPD with time change is deduced by the tracing rays method, and factors associated with the change of OPD are pointed out. Factors and their weights on the maximum OPD are also discussed. The calculation results demonstrate that OPD is closely related to the spatial distance between the primary rotating mirror (PRM) and secondary rotating mirror (SRM), the tilted angle between rotating mirrors' plane and the plane perpendicular to rotational axis, and the incident angle between incident beam split from beam splitter and the rotational axis. Also, it is proved that the tracing rays method and point-image method are both feasible and efficient; and the simulation curves of them agree with each other.

Number of references:12

Main heading:Fourier transforms

Controlled terms:Computer simulation - Mirrors - Rotation - Scanning - Spectrometry

Uncontrolled terms:Fourier transform spectrometry - General expression - High resolution - Incident angles - Incident beams - Mirror-imaging - New high - Non-linear optical - Optical path difference - Point image  - Rotating mirrors - Rotational axis - Simulation curves - Spatial distance - Tilted angle - Tilted planes - Time change - Tracing ray

Classification code:601.1 Mechanical Devices - 723.5 Computer Applications - 741.3 Optical Devices and Systems - 921.3 Mathematical Transformations

DOI:10.3788/AOS201131.0730001

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 351>

 

Accession number:20114014404534

Title:An algorithm of spatial beamforming in far-field using amplitude weighting method

Authors:Zhong, Lanxiang (1); Zhang, Zhiyong (1); Zhang, Wanxu (2)

Author affiliation:(1) Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Science, Xi'an, Shaanxi, 710068, China; (2) School of Information and Technology, Northwest University, Xi'an, Shaanxi, 710069, China

Corresponding author:Zhong, L.(lanx@nwu.edu.cn)

Source title:Proceedings - 2011 7th International Conference on Natural Computation, ICNC 2011

Abbreviated source title:Proc. - Int. Conf. Nat. Comput., ICNC

Volume:3

Monograph title:Proceedings - 2011 7th International Conference on Natural Computation, ICNC 2011

Issue date:2011

Publication year:2011

Pages:1813-1816

Article number:6022340

Language:English

ISBN-13:9781424499533

Document type:Conference article (CA)

Conference name:2011 7th International Conference on Natural Computation, ICNC 2011

Conference date:July 26, 2011 - July 28, 2011

Conference location:Shanghai, China

Conference code:86795

Sponsor:Coll. Inf. Sci. Technol. Donghua Univ.

Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States

Abstract:Using amplitude weighting instead of phase shifting of radiation emitted by planar array, an algorithm for forming a specific radiation pattern in far-field was proposed, and the formula of calculating amplitude value was derived. As an example, in which the radiation energy was strained in a limited solid angle, the beamforming process was numerically analyzed, and it was finally indicated that the total number of elements can be determined by the ratio between the energy of main beam and amount of energy from all elements. &copy; 2011 IEEE.

Number of references:26

Main heading:Beamforming

Controlled terms:Algorithms

Uncontrolled terms:Amplitude weighting - Far-field - Main beams - Phase-shifting - phased array - Planar arrays - Radiation energy - Solid angle - Spatial beamforming

Classification code:713 Electronic Circuits - 723 Computer Software, Data Handling and Applications - 731 Automatic Control Principles and Applications - 732 Control Devices - 921 Mathematics

DOI:10.1109/ICNC.2011.6022340

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 352>

 

Accession number:20113214224376

Title:All-digital pulse generator for gradually modulated semiconductor laser

Authors:Song, Zhiyuan (1); Feng, Li (1); Zhu, Shaolan (1); He, Haodong (1); Gao, Cunxiao (1); Niu, Linquan (1)

Author affiliation:(1) State Key Laboratory of Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China

Corresponding author:Zhu, S.(slzhu@opt.ac.cn)

Source title:Chinese Optics Letters

Abbreviated source title:Chin. Opt. Lett.

Volume:9

Issue:SUPPL. 1

Issue date:June 2011

Publication year:2011

Pages:S10306

Language:English

ISSN:16717694

Document type:Journal article (JA)

Publisher:Science Press, 18,Shuangqing Street,Haidian, Beijing, 100085, China

Abstract:An all-digital design method consisting of a laser drive circuit for gradually modulating the frequency, pulse width, and amplitude of the output of semiconductor laser is demonstrated. Field programmable gate arrays (FPGAs) and accurate delaying chip are used to generate the pulse. The repetition rate and pulse width of the laser pulse gradually adjust from 1 to 10 kHz and 700 ps to 3 ns, respectively. Furthermore, the time of the rising and falling edges for the laser pulse is less than 800 ps. &copy; 2011 Chinese Optics Letters.

Number of references:5

Main heading:Pulse generators

Controlled terms:Field programmable gate arrays (FPGA) - Lasers - Pulse circuits - Pulse repetition rate - Semiconductor lasers - Signal generators

Uncontrolled terms:Design method - Falling edge - Laser drive circuits - Pulse width - Repetition rate

Classification code:713.4 Pulse Circuits - 715 Electronic Equipment, General Purpose and Industrial - 721.3 Computer Circuits - 744.1 Lasers, General - 744.4.1 Semiconductor Lasers

DOI:10.3788/COL201109.S10306

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 353>

 

Accession number:20115214632143

Title:Self-adaptive threshold tracking algorithm of infrared weak-small targets

Authors:Xu, Zhaohui (1); Zhang, Yongkang (1); Tian, Yan (1); Tang, Huijun (1); Wei, Junxia (1)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics of CAS, Xi'an 710068, China

Corresponding author:Xu, Z.

Source title:Proceedings of SPIE - The International Society for Optical Engineering

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:8003

Monograph title:MIPPR 2011: Automatic Target Recognition and Image Analysis

Issue date:2011

Publication year:2011

Article number:80030L

Language:English

ISSN:0277786X

CODEN:PSISDG

ISBN-13:9780819485779

Document type:Conference article (CA)

Conference name:MIPPR 2011: Automatic Target Recognition and Image Analysis

Conference date:November 4, 2011 - November 6, 2011

Conference location:Guilin, China

Conference code:87793

Sponsor:Natl. Key Lab. Sci. Technol. Multi-spectral Inf. Process.; Huazhong University of Science and Technology; Guilin University of Electronic Technology

Publisher:SPIE, P.O. Box 10, Bellingham, WA 98227-0010, United States

Abstract:To detect IWST, foreign and domestic scholars put forward many meaningful detection methods. However, most of the algorithms are too much complex in the calculation to meet real-time and reliability requirements in practical application. A simple self-adaptive threshold algorithm to capture and track the IWST is presented in this paper. Testing results showed that algorithm not only effectively extract IWST and track it through the clouds in the sky background, but also has a strong robustness for the interference of background noises. &copy; 2011 SPIE.

Number of references:5

Main heading:Adaptive algorithms

Controlled terms:Automatic target recognition - Image analysis

Uncontrolled terms:Background noise - Detection methods - Real time - Self-adaptive - Sky background - Testing results - Threshold algorithms - Tracking algorithm - Video tracking

Classification code:716 Telecommunication; Radar, Radio and Television - 723 Computer Software, Data Handling and Applications - 741 Light, Optics and Optical Devices - 921 Mathematics

DOI:10.1117/12.901208

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 354>

 

Accession number:20115014598387

Title:Color image segmentation based on mean shift mode seeking

Authors:Ma, Junyong (1); Wen, Desheng (1); Yang, Shaodong (1); Xu, Zhigang (1)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics of CAS, Xi'an 710119, China; (2) 2Graduate University of the Chinese Academy of Sciences, Beijing 100039, China

Corresponding author:Ma, J.(majunyongzhangduo@126.com)

Source title:Journal of Computational Information Systems

Abbreviated source title:J. Comput. Inf. Syst.

Volume:7

Issue:12

Issue date:December 2011

Publication year:2011

Pages:4193-4200

Language:English

ISSN:15539105

Document type:Journal article (JA)

Publisher:Binary Information Press, P.O. Box 162, Bethel, CT 06801-0162, United States

Abstract:Extracting the salient regions from images plays an important role in image understanding, computer vision, pattern recognition and so on. This paper presents a color image segmentation method based on mean shift clustering to pave the way for identifying the salient objects in an image. As a widely used clustering method for segmentation, mean shift can automatically seek the modes of the underlying probability density function of an image. However, mean shift used in L^*a^*b^* color space often results in over-segmentation. In our segmentation scheme, we choose only color information of L^*a^*b^* color space and employ the mean shift procedures to determine all cluster centroids. Then every pixel is allocated into the cluster whose cluster centroid is closest to that pixel. To demonstrate the effectiveness of the proposed scheme, we apply it to classifying synthetic images and segmenting natural images. Excellent segmentation results have been obtained and it is concluded that the proposed segmentation method can overcome the problem of over-segmentation and make a big step toward the salient regions extraction. Copyright &copy; 2011 Binary Information Press.

Number of references:20

Main heading:Image segmentation

Controlled terms:Color - Color image processing - Computer vision - Pixels - Probability density function - Target tracking

Uncontrolled terms:Cluster centroids - Clustering - Clustering methods - Color image segmentation - Color information - Color space - Mean shift - Mode seeking - Natural images - Over segmentation  - Salient objects - Salient regions - Segmentation methods - Segmentation results - Segmentation scheme - Synthetic images

Classification code:716.2 Radar Systems and Equipment - 723.5 Computer Applications - 741.1 Light/Optics - 741.2 Vision - 921 Mathematics

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 355>

 

Accession number:20114014403729

Title:Synthesis of ZnO nanocrystals with different morphologies by hydrothermal method

Authors:Hang, Lianmao (1); Zhang, Zhiyong (2); Yan, Junfeng (2)

Author affiliation:(1) Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, China; (2) School of Information Science and Technology, Northwest University, Xi'an, China

Corresponding author:Hang, L.(hanglm@163.com)

Source title:Proceedings of 2011 International Conference on Electronic and Mechanical Engineering and Information Technology, EMEIT 2011

Abbreviated source title:Proc. Int. Conf. Electron. Mech. Eng. Inf. Technol., EMEIT

Volume:6

Monograph title:Proceedings of 2011 International Conference on Electronic and Mechanical Engineering and Information Technology, EMEIT 2011

Issue date:2011

Publication year:2011

Pages:2804-2806

Article number:6023685

Language:English

ISBN-13:9781612840857

Document type:Conference article (CA)

Conference name:2011 International Conference on Electronic and Mechanical Engineering and Information Technology, EMEIT 2011

Conference date:August 12, 2011 - August 14, 2011

Conference location:Harbin, China

Conference code:86793

Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States

Abstract:ZnO nanocrystals with different morphologies have been synthesized by hydrothermal method employing zinc acetate dihydrate [Zn(CH<inf>3</inf>COO) <inf>2</inf>2H<inf>2</inf>O] and sodium hydroxide (NaOH) as the starting reactants and characterized by means of X-ray diffraction (XRD) and field-emission scanning electron microscopy (FESEM). The results show that the as-synthesized products are hexagonal wurtzite structure of ZnO and exhibit flake-like, flower-like and rod-like structure, respectively. Their growth mechanisms are also tentatively elucidated. &copy; 2011 IEEE.

Number of references:8

Main heading:Hydrothermal synthesis

Controlled terms:Information technology - Mechanical engineering - Morphology - Nanocrystals - Scanning electron microscopy - Sodium - X ray diffraction - Zinc - Zinc compounds - Zinc oxide  - Zinc sulfide

Uncontrolled terms:Field emission scanning electron microscopy - Flower-like - Growth mechanisms - Hexagonal wurtzite structure - hydrothermal - Hydrothermal methods - Rod-like structures - Sodium hydroxides - Zinc acetate dihydrate - ZnO  - ZnO nanocrystal

Classification code:931.3 Atomic and Molecular Physics - 903 Information Science - 804.2 Inorganic Compounds - 802.2 Chemical Reactions - 951 Materials Science - 761 Nanotechnology - 608 Mechanical Engineering, General - 549.1 Alkali Metals - 546.3 Zinc and Alloys - 741.1 Light/Optics

DOI:10.1109/EMEIT.2011.6023685

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 356>

 

Accession number:20110613655165

Title:3-Dimensional thermal analysis of Yb³⁺-doped gain guided and index-antiguided fiber amplifier

Authors:Kun-Lun, Yan (1); En-Yu, Zhou (4); Wei, Wei (1); Bo, Peng (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, CAS, Xi'an 710119, China; (2) Graduate College of Chinese Academy of Science, Beijing 100049, China; (3) Institute of Advanced Materials, Nanjing University of Posts and Telecommunications, Nanjing 210003, China; (4) Department of Optical Science and Engineering, Fudan University, Shanghai 200433, China

Corresponding author:Kun-Lun, Y.(yklxbgd@126.com)

Source title:Optics Communications

Abbreviated source title:Opt Commun

Volume:284

Issue:6

Issue date:March 15, 2011

Publication year:2011

Pages:1626-1630

Language:English

ISSN:00304018

CODEN:OPCOB8

Document type:Journal article (JA)

Publisher:Elsevier, P.O. Box 211, Amsterdam, 1000 AE, Netherlands

Abstract:In this paper, the thermal characteristics of gain-guided and index-antiguided (GG-IAG) fiber amplifier were investigated with a 3-D heat flow model, based on rate equations. From the simulation results, it is found that the longitudinal heat conduction has a very important influence on the GG-IAG fiber amplifier temperature distribution, and the GG-IAG fiber amplifier would be subjected to a more serious thermal problem. Finally, the influence of different pump directions, cooling methods, cladding radius and negative refractive index step on the temperature distribution has also been studied. &copy; 2010 Elsevier B.V. All rights reserved.

Number of references:12

Main heading:Fibers

Controlled terms:Fiber amplifiers - Pumps - Refractive index - Temperature distribution - Thermoanalysis - Three dimensional - Ytterbium

Uncontrolled terms:3-dimensional - Cooling methods - Doped fiber amplifier - Gain guided - Gain-guided index-antiguided fiber - Heat-flow models - Longitudinal heat conduction - Negative refractive index - Rate equations - Simulation result  - Thermal analysis - Thermal characteristics

Classification code:902.1 Engineering Graphics - 817 Plastics and Other Polymers: Products and Applications - 812 Ceramics, Refractories and Glass - 801 Chemistry - 741.1.2 Fiber Optics - 741.1 Light/Optics - 641.1 Thermodynamics - 618.2 Pumps - 547.2 Rare Earth Metals

DOI:10.1016/j.optcom.2010.11.033

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 357>

 

Accession number:20112414050317

Title:Giant birefringence of periodic dielectric waveguides

Authors:Zhang, Wenfu (1); Liu, Jihong (3); Huang, Wei-Ping (4); Zhao, Wei (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (2) Graduate School, Chinese Academy of Sciences, Beijing 100049, China; (3) Department of Electronic and Information Engineering, Xi'an University of Posts and Telecommunications, Xi'an 710061, China; (4) Department of Electrical and Computer Engineering, McMaster University, Hamilton, ON L8S 4K1, Canada

Corresponding author:Zhang, W.(wfu.zhang@gmail.com)

Source title:IEEE Photonics Journal

Abbreviated source title:IEEE Photon. J.

Volume:3

Issue:3

Issue date:June 2011

Publication year:2011

Pages:512-520

Article number:5766005

Language:English

ISSN:19430655

Document type:Journal article (JA)

Publisher:Institute of Electrical and Electronics Engineers Inc., 445 Hoes Lane / P.O. Box 1331, Piscataway, NJ 08855-1331, United States

Abstract:The giant (&Delta;n &gt; 1.5) and broadband achromatic birefringence is realized by periodic dielectric waveguides (PDWs), which benefit from low loss transmission, compact size, and simple structure. Based on the PDW, ultrabroadband achromatic (&gt; 100 nm), low-order ultracompact (&lt; &lambda;), and ultrahigh-order (500th order) wave plates are designed successfully. &copy; 2009 IEEE.

Number of references:31

Main heading:Periodic structures

Controlled terms:Birefringence - Dielectric waveguides - Photonic crystals - Waveguides

Uncontrolled terms:Compact size - Low loss - Periodic dielectric waveguides - Simple structures - Sub-wavelength structures - Ultra-broadband - waveguide devices - Waveplates

Classification code:714.3 Waveguides - 741.1 Light/Optics - 741.3 Optical Devices and Systems - 933 Solid State Physics - 933.1 Crystalline Solids

DOI:10.1109/JPHOT.2011.2154319

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 358>

 

Accession number:20115214631766

Title:Improved fourier descriptors in model-based pose estimation

Authors:Tang, Hui-Jun (1); Wen, Jia (1); Ma, Cai-Wen (1); Hu, Hai-Bin (3); Zhou, Ren-Kui (1)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, CAS, Xi'an 710119, China; (2) Graduate School, CAS, Beijing 100039, China; (3) Beijing Institute of Tracking and Telecommunications Technology, Beijing 100094, China

Corresponding author:Tang, H.-J.(tanghj@opt.ac.cn)

Source title:Proceedings of SPIE - The International Society for Optical Engineering

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:8004

Monograph title:MIPPR 2011: Pattern Recognition and Computer Vision

Issue date:2011

Publication year:2011

Article number:80040M

Language:English

ISSN:0277786X

CODEN:PSISDG

ISBN-13:9780819485786

Document type:Conference article (CA)

Conference name:MIPPR 2011: Pattern Recognition and Computer Vision

Conference date:November 4, 2011 - November 6, 2011

Conference location:Guilin, China

Conference code:87789

Sponsor:Natl. Key Lab. Sci. Technol. Multi-spectral Inf. Process.; Huazhong University of Science and Technology; Guilin University of Electronic Technology

Publisher:SPIE, P.O. Box 10, Bellingham, WA 98227-0010, United States

Abstract:We use Fourier descriptors (FD's) to represent shape in model-based pose estimation. Specific invariance and normalization requirements for shape descriptors concerning to pose estimation are proposed. FD's are improved to meet such requirements. Common issues and techniques for such application are focused on. Starting point of the shape contour is fixed to the upper left corner point. Distance pairs instead of edge coordinate pairs recast the shape sequence. Moving average filtering is proceeded to remove the noises of the shape sequence. Shape sequence is re-sampled to make it definite length. FD's amplitude is normalized to the range of 0 to 1. Variance of sequences between observed and library FD's is defined as the shape matching objective function. For simulation, we use a missile model of Milkshape3d format. Results show that by adopting the improved FD's, we can arrive at a pose estimation practically by randomly optimal search of library FD's. &copy; 2011 SPIE.

Number of references:6

Main heading:Finite difference method

Controlled terms:Computer simulation - Computer vision - Content based retrieval - Estimation - Fourier transforms - Invariance - Optimization

Uncontrolled terms:Fourier descriptors - Model-based - Normalization - Optimal search - Pose estimation - Shape matching

Classification code:723.5 Computer Applications - 731.1 Control Systems - 741 Light, Optics and Optical Devices - 921 Mathematics

DOI:10.1117/12.901770

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 359>

 

Accession number:20114314447237

Title:All fiber supercontinuum light source using photonic crystal fibers pumped by nanosecond fiber laser pulses

Authors:Zhu, S.L. (1); Gao, C.X. (1); He, H.D. (1); Feng, L. (1); Cao, Z.Y. (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (2) Graduate University, Chinese Academy of Sciences, Beijing 100049, China

Corresponding author:Zhu, S.L.(slzhu@opt.ac.cn)

Source title:Laser Physics

Abbreviated source title:Laser Phys.

Volume:21

Issue:9

Issue date:September 2011

Publication year:2011

Pages:1629-1632

Language:English

ISSN:1054660X

E-ISSN:15556611

Document type:Journal article (JA)

Publisher:Maik Nauka-Interperiodica Publishing, Profsoyuznaya Ul 90, Moscow, 117997, Russia

Abstract:A novel compact supercontinuum (SC) source using the single mode photonic crystal fibers (PCF) pumped with an all fiber MOPA fiber laser is demonstrated experimentally. A bandwidth of 700 nm is achieved by operating the pumping fiber laser at a wavelength of 1064 nm, pulse duration of 10 ns, repetition rate of 50 kHz and peak power of 1 kW. The SC generation is initiated through modulation instability (MI) which breakups the nanosecond pump pulses into picosecond or femtosecond pulses, and further broadened through nonlinear effects of PCF. &copy; 2011 Pleiades Publishing, Ltd.

Number of references:25

Main heading:Photonic crystal fibers

Controlled terms:Crystal whiskers - Electromagnetic pulse - Fiber lasers - Fibers - Light sources - Nonlinear optics - Optical pumping - Photonic crystals - Pulse repetition rate - Single mode fibers

Uncontrolled terms:1064 nm - All fiber - Modulation instabilities - Nonlinear effect - Peak power - Picoseconds - Pulse durations - Pump pulse - Repetition rate - Single mode photonic crystal fiber  - Supercontinuum - Supercontinuum light source

Classification code:701 Electricity and Magnetism - 741 Light, Optics and Optical Devices - 744.1 Lasers, General - 801.4 Physical Chemistry - 812 Ceramics, Refractories and Glass - 817 Plastics and Other Polymers: Products and Applications

DOI:10.1134/S1054660X11150412

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 360>

 

Accession number:20114714541765

Title:Compression of electron pulses in temporal domain

Authors:Tian, Jin-Shou (1); Lei, Xiao-Hong (1); Wen, Wen-Long (1); Xu, Xiang-Yan (1); Wang, Jun-Feng (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Acad. of Sci., Xi'an 710119, China; (2) Graduate University of Chinese Acad. of Sci., Beijing 100049, China

Corresponding author:Lei, X.-H.(lxh2009206@163.com)

Source title:Guangxue Jingmi Gongcheng/Optics and Precision Engineering

Abbreviated source title:Guangxue Jingmi Gongcheng

Volume:19

Issue:10

Issue date:October 2011

Publication year:2011

Pages:2379-2385

Language:Chinese

ISSN:1004924X

CODEN:GJGOF4

Document type:Journal article (JA)

Publisher:Chinese Academy of Sciences, 140 Renmin Street, Changchun, 130022, China

Abstract:The compression of electron pulses in the temporal domain is a core technique to improve the temporal resolution of ultrafast diagnosis instruments, such as streak cameras and ultrafast electron diffraction systems. In this paper, a time focusing technique is adopted to potentially improve the physical temporal resolutions of streak cameras and ultrafast electron diffraction systems. This method uses a time-dependent acceleration field to greatly compensate the temporal dispersion between photocathode and anode to accelerate the slow electrons and decelerate the fast electrons, relatively. As a result, the temperal dispersion due to an initial energy spread can be compensated to a large extent at the output of time focusing region. Tracing and simulating a large number of photoelectrons through Monte-Carlo and finite difference methods shows that the electron pulse with a 300 fs can be compressed to 50 fs, which lays a powerful foundation for developing the streak cameras and ultrafast electron diffraction systems with better than 100 fs temporal resolution.

Number of references:16

Main heading:Electrons

Controlled terms:Dispersions - Electron diffraction - Finite difference method - Focusing - Streak cameras

Uncontrolled terms:Acceleration fields - Electron pulse - Fast electrons - Initial energy - MONTE CARLO - Slow electrons - Temporal dispersion - Temporal domain - Temporal resolution - Time focusing  - Time-dependent - Ultra-fast - Ultrafast electron diffraction

Classification code:701.1 Electricity: Basic Concepts and Phenomena - 711.1 Electromagnetic Waves in Different Media - 742.2 Photographic Equipment - 921.6 Numerical Methods - 932.2 Nuclear Physics - 951 Materials Science

DOI:10.3788/OPE.20111910.2379

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 361>

 

Accession number:20114714544362

Title:Modulation transfer function online compensation of imaging system in remote sensing satellite

Authors:Li, Huijuan (1); Qu, Youshan (1); Cheng, Pan (1)

Author affiliation:(1) Xi'An Institute of Optics and Precise Mechanics of CAS, Xi'an, China

Corresponding author:Li, H.

Source title:2011 International Conference on Electronics, Communications and Control, ICECC 2011 - Proceedings

Abbreviated source title:Int. Conf. Electron., Commun. Control, ICECC - Proc.

Monograph title:2011 International Conference on Electronics, Communications and Control, ICECC 2011 - Proceedings

Issue date:2011

Publication year:2011

Pages:3821-3824

Article number:6066285

Language:English

ISBN-13:9781457703218

Document type:Conference article (CA)

Conference name:2011 International Conference on Electronics, Communications and Control, ICECC 2011

Conference date:September 9, 2011 - September 11, 2011

Conference location:Ningbo, China

Conference code:87394

Sponsor:Ningbo University

Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States

Abstract:According to the theory of Fourier Optics, an optical remote sensing imaging system is an optical diffraction-limited system and a low-pass filter. CCD or CMOS imaging sensors are low-pass filters as well. Thus, when the optical information of an object or a scene with abundant high-frequency components passes through the remote sensing optical imaging system, the profuse middle-frequency information is attenuated and the rich high-frequency information is lost, which will blur the captured remote sensing images. To solve this problem of the imaging system in the remote sensing satellite, an analog on-line compensating method of the Modulation Transfer Function (MTF) in the imaging system is proposed in this paper. The established method was realized by a hardware analog circuit placed before the A/D converter, which is composed of adjustable low-pass filters with a calculated value of quality factor Q. All the theory analysis, experiment results and application in the remote sensing imaging system of the satellite showed that the proposed method and the realized compensating circuit are capable of improving the MTF of imaging systems and enhancing the middle frequency of blurred video images. &copy; 2011 IEEE.

Number of references:8

Main heading:Optical transfer function

Controlled terms:Analog circuits - Analog to digital conversion - Communication satellites - Compensation (personnel) - Electric network analysis - Image enhancement - Image reconstruction - Imaging systems - Low pass filters - Military satellites  - Modulation - Online systems - Quality control - Remote sensing - Signal filtering and prediction

Uncontrolled terms:A/D converter - Calculated values - CMOS imaging sensor - Compensating circuits - Compensating method - Diffraction-limited systems - High frequency components - High frequency HF - MTF - Online  - Online compensation - Optical imaging system - Optical information - Optical remote sensing - Quality factors - Remote sensing images - Remote sensing imaging - Remote sensing satellites - Video image

Classification code:913.3 Quality Assurance and Control - 722.4 Digital Computers and Systems - 731.1 Control Systems - 741 Light, Optics and Optical Devices - 741.1 Light/Optics - 746 Imaging Techniques - 912.4 Personnel - 718 Telephone Systems and Related Technologies; Line Communications - 716 Telecommunication; Radar, Radio and Television - 713 Electronic Circuits - 703.2 Electric Filters - 703.1.1 Electric Network Analysis - 404.1 Military Engineering - 717 Optical Communication

DOI:10.1109/ICECC.2011.6066285

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 362>

 

Accession number:20120814783334

Title:Optical focusing by planar lenses based on nano-scale metallic slits in visible regime

Authors:Feng, Di (1); Zhang, Chunxi (2)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Chinese Academy of Sciences, Xi'an, 710119, China; (2) School of Instrumentation Science and Optoelectronics Engineering, Beihang University, Beijing, 100191, China

Corresponding author:Feng, D.(fengdi@buaa.edu.cn)

Source title:Physics Procedia

Abbreviated source title:Phys. Procedia

Volume:22

Monograph title:2011 International Conference on Physics Science and Technology, ICPST 2011

Issue date:2011

Publication year:2011

Pages:428-434

Language:English

ISSN:18753884

E-ISSN:18753892

Document type:Conference article (CA)

Conference name:2011 1st International Conference on Physics Science and Technology, ICPST 2011

Conference date:December 12, 2011 - December 13, 2011

Conference location:Hong Kong, China

Conference code:88509

Sponsor:Information Engineering Research Institute; IERI Circuit and System Society

Publisher:Elsevier, P.O. Box 211, Amsterdam, 1000 AE, Netherlands

Abstract:A kind of planar metallic lenses is proposed to realize optical focusing in the visible wavelength through a metallic film with nano-scale slit arrays, which have the same depth but tuning widths. Due to the subwavelength and aperiodic nature of planar metallic lenses, we present the rigorous electromagnetic analysis by using two dimensional finite difference time domain method. The electromagnetic wave transports through the tuning slits in the form of surface plasmon polaritons, and gets the required phase retardations to focusing at the focal plane. We analyze the focusing characteristics of planar dielectric lens and metallic lens with tuning widths that are obtained by generalizing the relevant phase delay, for different incidence polarization waves (TM polarized case and TE polarized case). The computational calculation results show that, extraordinary optical transmission of surface plasmon polaritions through non uniform nano-scale metallic slits is observed, and it has contributions to the optical focusing, but cannot increase the focal energy compared with dielectric planar lens with the same profile, and the metallic lenses are more sensitive to the polarization of incidence wave than that of dielectric lenses. The influence of metallic lenses' thickness on the focal characteristics has been analyzed also. &copy; 2011 Published by Elsevier B.V.

Number of references:15

Main heading:Lenses

Controlled terms:Electromagnetic wave polarization - Electromagnetic waves - Finite difference time domain method - Focusing - Nanotechnology - Plasmons - Technology

Uncontrolled terms:Computational calculations - Dielectric lens - Electromagnetic analysis - Extraordinary optical transmission - Focal Plane - Incidence wave - Metallic lens - Metallic slits - Nano scale - Optical focusing  - Phase delay - Phase retardation - Planar lens - Polarization waves - Slit array - Sub-wavelength - Sub-wavelength structures - Surface plasmon polaritons - Surface plasmons - Visible wavelengths

Classification code:901 Engineering Profession - 761 Nanotechnology - 741.3 Optical Devices and Systems - 921 Mathematics - 741.1 Light/Optics - 711.1 Electromagnetic Waves in Different Media - 711 Electromagnetic Waves - 712.1 Semiconducting Materials

DOI:10.1016/j.phpro.2011.11.067

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 363>

 

Accession number:20114014386369

Title:An automatic multi-spectral infrared sea surface temperature radiometer

Authors:Zhang, Jian (1); Qu, Enshi (1); Cao, Jianzhong (1); Fan, Zheyuan (1); Yang, Hongtao (1)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, CAS, Xi'an, China

Corresponding author:Zhang, J.(zj@opt.ac.cn)

Source title:ICEOE 2011 - 2011 International Conference on Electronics and Optoelectronics, Proceedings

Abbreviated source title:ICEOE - Int. Conf. Electron. Optoelectron., Proc.

Volume:2

Monograph title:ICEOE 2011 - 2011 International Conference on Electronics and Optoelectronics, Proceedings

Issue date:2011

Publication year:2011

Pages:V2339-V2343

Article number:6013251

Language:English

ISBN-13:9781612842738

Document type:Conference article (CA)

Conference name:2011 International Conference on Electronics and Optoelectronics, ICEOE 2011

Conference date:July 29, 2011 - July 31, 2011

Conference location:Dalian, China

Conference code:86661

Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States

Abstract:Sea surface temperature (SST) is an important parameter in many operational and research activities, ranging from weather forecasting to climate research. A multi-spectral infrared sea surface temperature radiometer is a self-calibrating instrument capable of measuring in situ sea surface temperature to an accuracy of better than 0.1 K. This paper describes an instrument with special design features that double channel radiometer with four spectral band pass of 3m5m and 8m12m adapts for autonomous use. The entire instrument infrared optical path is calibrated by viewing two blackbody reference cavities at different temperatures. In this case, the high accuracy of an infrared radiometer is maintained although optical components are moderately contaminated by salt deposition. An newly designed protection shutter that is triggered by a sensitive rain gauge automatically seals the instrument from the external environment in foul weather. &copy; 2011 IEEE.

Number of references:6

Main heading:Atmospheric temperature

Controlled terms:Gages - Infrared radiation - Optoelectronic devices - Radiometers - Radiometry - Surface properties - Weather forecasting

Uncontrolled terms:Blackbody reference - Climate research - Design features - Double channel - External environments - In-situ - Infra-red radiometers - infrared radiometer - Multi-spectral - Optical components  - Optical path - Radiation measurements - Rain gauges - Research activities - Salt deposition - Sea surface temperatures - Self-calibrating - Spectral band

Classification code:944.8 Radiation Measurements - 944.7 Radiation Measuring Instruments - 943.3 Special Purpose Instruments - 951 Materials Science - 741.3 Optical Devices and Systems - 443.1 Atmospheric Properties - 443 Meteorology - 741.1 Light/Optics

DOI:10.1109/ICEOE.2011.6013251

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 364>

 

Accession number:20114414481713

Title:Laser protection of optical payload

Authors:Li, Fu (1); Yang, Jianfeng (1); Ruan, Ping (1); Xue, Bin (1)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China

Corresponding author:Li, F.(lifu@opt.ac.cn)

Source title:Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering

Abbreviated source title:Hongwai yu Jiguang Gongcheng Infrared Laser Eng.

Volume:40

Issue:9

Issue date:September 2011

Publication year:2011

Pages:1710-1714

Language:Chinese

ISSN:10072276

Document type:Journal article (JA)

Publisher:Chinese Society of Astronautics, P.O. Box 225-32, Tianjin, 300192, China

Abstract:The optical payload is aircraft's "eye", which is attacked by laser weapons very easily. Now, the ground-based laser weapons have possessed actual combat ability and their performance was influenced by their parameters and atmosphere. The disturbed and destroyed principle of optical payload by laser weapon was introduced. The laser protection technique including passive protection and active protection was analyzed, and the advantage and disadvantage of each protection technique were compared. An example was demonstrated in order to evaluate protection efficiency which the different waveband laser was analyzed within field and outside field. The result shows that the laser within field and waveband is most fatal. The optical payload can be disturbed even when the passive protection technique is adopted. Lastly, the suggestion of laser protection was presented.

Number of references:8

Main heading:Eye protection

Controlled terms:Military equipment

Uncontrolled terms:Active protection - Combat ability - Efficiency evaluation - Ground-based lasers - Laser protection - Laser weapons - Optical payloads - Passive protection - Protection efficiency - Protection techniques  - Wavebands

Classification code:404.1 Military Engineering - 461.4 Ergonomics and Human Factors Engineering

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 365>

 

Accession number:20112214010913

Title:Semisupervised dimensionality reduction and classification through virtual label regression

Authors:Nie, Feiping (1); Xu, Dong (1); Li, Xuelong (2); Xiang, Shiming (3)

Author affiliation:(1) School of Computer Engineering, Nanyang Technological University, Singapore 639798., Singapore; (2) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (3) Institute of Automation, Chinese Academy of Sciences, Beijing 100190, China

Corresponding author:Nie, F.

Source title:IEEE Transactions on Systems, Man, and Cybernetics, Part B: Cybernetics

Abbreviated source title:IEEE Trans Syst Man Cybern Part B Cybern

Volume:41

Issue:3

Issue date:June 2011

Publication year:2011

Pages:675-685

Article number:5645697

Language:English

ISSN:10834419

CODEN:ITSCFI

Document type:Journal article (JA)

Publisher:Institute of Electrical and Electronics Engineers Inc., 445 Hoes Lane / P.O. Box 1331, Piscataway, NJ 08855-1331, United States

Abstract:Semisupervised dimensionality reduction has been attracting much attention as it not only utilizes both labeled and unlabeled data simultaneously, but also works well in the situation of out-of-sample. This paper proposes an effective approach of semisupervised dimensionality reduction through label propagation and label regression. Different from previous efforts, the new approach propagates the label information from labeled to unlabeled data with a well-designed mechanism of random walks, in which outliers are effectively detected and the obtained virtual labels of unlabeled data can be well encoded in a weighted regression model. These virtual labels are thereafter regressed with a linear model to calculate the projection matrix for dimensionality reduction. By this means, when the manifold or the clustering assumption of data is satisfied, the labels of labeled data can be correctly propagated to the unlabeled data; and thus, the proposed approach utilizes the labeled and the unlabeled data more effectively than previous work. Experimental results are carried out upon several databases, and the advantage of the new approach is well demonstrated. &copy; 2010 IEEE.

Number of references:39

Main heading:Data reduction

Controlled terms:Regression analysis

Uncontrolled terms:Dimensionality reduction - Label information - Label propagation - Labeled and unlabeled data - Labeled data - Linear model - Projection matrix - Random Walk - Semi-supervised - Semi-supervised learning  - subspace learning - Unlabeled data - Virtual labels - Weighted regression

Classification code:723.2 Data Processing and Image Processing - 922.2 Mathematical Statistics

DOI:10.1109/TSMCB.2010.2085433

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 366>

 

Accession number:20112013989985

Title:Selection of interpolation methods used to mitigate spectral misregistration of imaging spectrometers

Authors:Chen, Xu (1); Xiang, Yang (1); Feng, Yu-Tao (3)

Author affiliation:(1) State Key Laboratory of Applied Optics, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China; (2) Graduate University of Chinese Academy of Sciences, Beijing 100049, China; (3) Xi'an Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Xi'an 710119, China

Corresponding author:Xiang, Y.(xiangy@sklao.ac.cn)

Source title:Guang Pu Xue Yu Guang Pu Fen Xi/Spectroscopy and Spectral Analysis

Abbreviated source title:Guang Pu Xue Yu Guang Pu Fen Xi

Volume:31

Issue:4

Issue date:April 2011

Publication year:2011

Pages:1147-1150

Language:Chinese

ISSN:10000593

CODEN:GYGFED

Document type:Journal article (JA)

Publisher:Science Press, 18,Shuangqing Street,Haidian, Beijing, 100085, China

Abstract:Spectral curvature destroys the co-registration of the spectra measured by dispersion imaging spectrometer. Using interpolation to re-sample the measured spectra at the non-offset mid-wavelengths can mitigate the spectral misregistration. It is very important to select an optimum interpolation method. The performances of six common interpolation methods are evaluated by comparing the residual errors in the corrected spectral radiance. The results indicate that, four-point cubic Lagrange interpolation and cubic spline interpolation are better than other four interpolation methods (linear Interpolation, three points quadratic polynomial interpolation, five points four-order Lagrange interpolation and cubic Hermite interpolation). For spectral offset of 10% &Delta;&lambda;(&Delta;&lambda;=5 nm), the normalized errors in measured spectral radiance is PV=0.06, that is reduced to PV&lt;0.022 after interpolation with cubic Lagrange interpolation or cubic spline interpolation, but for other four methods they are PV&gt;0.035. Furthermore, for lower spectral resolution (&Delta;&lambda;&gt;5 nm), cubic Lagrange interpolation is a little better than cubic spline interpolation; while for higher spectral resolution (&Delta;&lambda;&lt;5 nm), cubic spline interpolation is a little better.

Number of references:8

Main heading:Interpolation

Controlled terms:Errors - Lagrange multipliers - Polynomials - Spectral resolution - Spectrometers - Spectrometry - Splines

Uncontrolled terms:Coregistration - Cubic Hermite interpolation - Cubic-spline interpolation - Dispersion imaging - Four-order - Four-point - Imaging spectrometers - Interpolation method - Lagrange interpolations - Linear Interpolation  - Misregistration - Optimum interpolation - Quadratic polynomial interpolation - Radiance correction - Residual error - Spectral curvature (smile) - Spectral radiance

Classification code:601.2 Machine Components - 741.1 Light/Optics - 801 Chemistry - 921 Mathematics

DOI:10.3964/j.issn.1000-0593(2011)04-1147-04

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 367>

 

Accession number:20110213561002

Title:Efficient HOG human detection

Authors:Pang, Yanwei (1); Yuan, Yuan (2); Li, Xuelong (2); Pan, Jing (3)

Author affiliation:(1) School of Electronic Information Engineering, Tianjin University, Tianjin 300072, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, Shaanxi, China; (3) School of Electronic Engineering, Tianjin University of Technology and Education, Tianjin 300222, China

Corresponding author:Yuan, Y.(yuany@opt.ac.cn)

Source title:Signal Processing

Abbreviated source title:Signal Process

Volume:91

Issue:4

Issue date:April 2011

Publication year:2011

Pages:773-781

Language:English

ISSN:01651684

CODEN:SPRODR

Document type:Journal article (JA)

Publisher:Elsevier, P.O. Box 211, Amsterdam, 1000 AE, Netherlands

Abstract:While Histograms of Oriented Gradients (HOG) plus Support Vector Machine (SVM) (HOGSVM) is the most successful human detection algorithm, it is time-consuming. This paper proposes two ways to deal with this problem. One way is to reuse the features in blocks to construct the HOG features for intersecting detection windows. Another way is to utilize sub-cell based interpolation to efficiently compute the HOG features for each block. The combination of the two ways results in significant increase in detecting humansmore than five times better. To evaluate the proposed method, we have established a top-view human database. Experimental results on the top-view database and the well-known INRIA data set have demonstrated the effectiveness and efficiency of the proposed method. &copy; 2010 Elsevier B.V. All rights reserved.

Number of references:27

Main heading:Algorithms

Controlled terms:Video signal processing

Uncontrolled terms:Cell-based - Data sets - Detection windows - Fast algorithms - HOG - Human detection - Image and video processing

Classification code:716.4 Television Systems and Equipment - 723 Computer Software, Data Handling and Applications - 921 Mathematics

DOI:10.1016/j.sigpro.2010.08.010

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 368>

 

Accession number:20112514069704

Title:Slightly off-axis interferometry for microscopy with second wavelength assistance

Authors:Han, Junhe (1); Gao, Peng (2); Yao, Baoli (2); Gu, Yuzong (1); Huang, Mingju (1)

Author affiliation:(1) School of Physics and Electronics, Henan University, Kaifeng 475004, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China

Corresponding author:Han, J.(junhh@henu.edu.cn)

Source title:Applied Optics

Abbreviated source title:Appl. Opt.

Volume:50

Issue:17

Issue date:June 10, 2011

Publication year:2011

Pages:2793-2798

Language:English

ISSN:1559128X

E-ISSN:15394522

CODEN:APOPAI

Document type:Journal article (JA)

Publisher:Optical Society of America, 2010 Massachusetts Ave, NW, Washington, DC, DC 20036-1023, United States

Abstract:Slightly off-axis interferometry for microscopy has been performed, where the dc term of the interferogram is suppressed by the object wave in another wavelength. One wavelength of the laser beam (red light) is used to generate the slightly off-axis interferogram, while the second wavelength (blue light) is employed to measure the transmittance of the specimen. Both the red light and blue light are recorded simultaneously by a color CCD camera and can be separated without cross talk via the red-green-blue components. The dc term of the slightly off-axis interferogram of red light is suppressed with the object wave of blue light. As a consequence, the requirement on the off-axis angle between the object and reference waves is relaxed as well as the requirement on the resolving power of CCD camera. &copy; 2011 Optical Society of America.

Number of references:35

Main heading:Interferometry

Controlled terms:CCD cameras - DC power transmission

Uncontrolled terms:Blue light - Interferograms - Object waves - Off-axis - Off-axis angles - Red green blues - Red light - Reference waves

Classification code:706.1.1 Electric Power Transmission - 714.2 Semiconductor Devices and Integrated Circuits - 941.4 Optical Variables Measurements

DOI:10.1364/AO.50.002793

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 369>

 

Accession number:20105113505146

Title:Non-goal scene analysis for soccer video

Authors:Gao, Xinbo (1); Niu, Zhenxing (1); Tao, Dacheng (2); Li, Xuelong (3)

Author affiliation:(1) School of Electronic Engineering, Xidian University, Xi'an 710071, China; (2) Centre for Quantum Computation and Intelligent Systems, Faculty of Engineering and Information Technology, University of Technology, SydneyBroadway NSW 2007, Australia; (3) Center for OPTical IMagery Analysis and Learning (OPTIMAL), State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China

Corresponding author:Tao, D.(dacheng.tao@uts.edu.au)

Source title:Neurocomputing

Abbreviated source title:Neurocomputing

Volume:74

Issue:4

Issue date:January 2011

Publication year:2011

Pages:540-548

Language:English

ISSN:09252312

CODEN:NRCGEO

Document type:Journal article (JA)

Publisher:Elsevier, P.O. Box 211, Amsterdam, 1000 AE, Netherlands

Abstract:The broadcast soccer video is usually recorded by one main camera, which is constantly gazing somewhere of playfield where a highlight event is happening. So the camera parameters and their variety have close relationship with semantic information of soccer video, and much interest has been caught in camera calibration for soccer video. The previous calibration methods either deal with goal scene, or have strict calibration conditions and high complexity. So, it does not properly handle the non-goal scene such as midfield or center-forward scene. In this paper, based on a new soccer field model, a field symbol extraction algorithm is proposed to extract the calibration information. Then a two-stage calibration approach is developed which can calibrate camera not only for goal scene but also for non-goal scene. The preliminary experimental results demonstrate its robustness and accuracy. &copy; 2010 Elsevier B.V.

Number of references:35

Main heading:Calibration

Controlled terms:Cameras - Semantics - Video streaming

Uncontrolled terms:Calibration information - Calibration method - Camera calibration - Camera parameter - Extraction algorithms - Field model - Scene analysis - Semantic analysis - Semantic information - Soccer fields  - Soccer video - Two stage

Classification code:944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments - 943 Mechanical and Miscellaneous Measuring Instruments - 942 Electric and Electronic Measuring Instruments - 941 Acoustical and Optical Measuring Instruments - 903.2 Information Dissemination - 742.2 Photographic Equipment - 716 Telecommunication; Radar, Radio and Television

DOI:10.1016/j.neucom.2010.09.013

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 370>

 

Accession number:20112214015259

Title:Dissipative soliton generation/compression in compact all-fibre laser system

Authors:Wang, L.R. (1); Liu, X.M. (1); Gong, Y.K. (1); Mao, D. (1); Lu, H. (1)

Author affiliation:(1) Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, State Key Laboratory of Transient Optics and Photonics, Xi'an 710119, China

Corresponding author:Wang, L. R.

Source title:Electronics Letters

Abbreviated source title:Electron. Lett.

Volume:47

Issue:6

Issue date:March 17, 2011

Publication year:2011

Pages:392-393

Language:English

ISSN:00135194

CODEN:ELLEAK

Document type:Journal article (JA)

Publisher:Institution of Engineering and Technology, Six Hills Way, Stevenage, SG1 2AY, United Kingdom

Abstract:The generation and compression of dissipative-soliton (DS) pulses in a compact erbium-doped all-fibre laser system is investigated experimentally. The high-energy picosecond DSs can be dechirped to femtosecond pulses by a segment of singlemode fibre with the maximal compression factor of 122. It is found that the necessary dispersion to compress DSs is approximately proportional to their initial pulse durations, and the larger the spectrum width, the less the dispersion needed to dechirp the DSs. &copy; 2011 The Institution of Engineering and Technology.

Number of references:8

Main heading:Solitons

Controlled terms:Dispersions - Electromagnetic pulse - Erbium

Uncontrolled terms:Compression factor - Dechirp - Dissipative solitons - Erbium doped - Femtosecond pulse - High energy - Laser systems - Picoseconds - Pulse durations - Single mode fibres  - Spectrum width

Classification code:547.2 Rare Earth Metals - 701 Electricity and Magnetism - 931.3 Atomic and Molecular Physics - 951 Materials Science

DOI:10.1049/el.2010.3674

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 371>

 

Accession number:20111013714652

Title:A signal to noise ratio measurement for single shot laser pulses by use of an optical Kerr gate

Authors:He, Junfang (1); Zhu, Changjun (2); Wang, Yishan (1); Cheng, Guanghua (1); Zou, Kuaisheng (1); Wu, Dengke (1); Xie, Xudong (3)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (2) Department of Physics, School of Science, Xi'an Polytechnic University, Xi'an 710048, China; (3) National Key Laboratory of Laser Fusion, Research Center of Laser Fusion, CAEP, Mianyang 621900, China

Corresponding author:He, J.(amilyhjf@163.com)

Source title:Optics Express

Abbreviated source title:Opt. Express

Volume:19

Issue:5

Issue date:February 28, 2011

Publication year:2011

Pages:4438-4443

Language:English

E-ISSN:10944087

Document type:Journal article (JA)

Publisher:Optical Society of America, 2010 Massachusetts Ave, NW, Washington, DC, DC 20036-1023, United States

Abstract:A new design of signal to noise ratio (SNR) measurement for single shot laser pulses, based on a stepped grating and an optical Kerr gate (OKG), is presented. A single shot laser pulse was simultaneously divided into multi-pulses in both time and space. Intensity-space distribution of laser multi-pulses, which was recorded with a CCD detector, was transformed into intensity-time distribution. Time resolution of 1.95 ps and detection time range of 42.9 ps were obtained, respectively. Moreover, optical spatial localization attenuators were introduced into optical path to acquire wide dynamic range in the SNR measurement and, as a result, the dynamic range has been extended remarkably. &copy; 2011 Optical Society of America.

Number of references:26

Main heading:Signal to noise ratio

Controlled terms:Laser pulses

Uncontrolled terms:CCD detectors - Detection time - Dynamic range - New design - Optical Kerr gate - Optical path - Single shots - Space distribution - Spatial localization - Time and space  - Time distribution - Time resolution - Wide dynamic range

Classification code:716.1 Information Theory and Signal Processing - 744.1 Lasers, General

DOI:10.1364/OE.19.004438

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 372>

 

Accession number:20122715188505

Title:Single-image super-resolution based on semi-supervised learning

Authors:Tang, Yi (1); Yuan, Yuan (1); Yan, Pingkun (1); Li, Xuelong (1); Pan, Xiaoli (2); Li, Luoqing (2)

Author affiliation:(1) Center for OPTical IMagery Analysis and Learning (OPTIMAL), Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, Shaanxi, China; (2) Faculty of Mathematics and Computer Science, Hubei University, Wuhan 430062, Hubei, China

Corresponding author:Tang, Y.

Source title:1st Asian Conference on Pattern Recognition, ACPR 2011

Abbreviated source title:Asian Conf. Pattern Recogn., ACPR

Monograph title:1st Asian Conference on Pattern Recognition, ACPR 2011

Issue date:2011

Publication year:2011

Pages:52-56

Article number:6166563

Language:English

ISBN-13:9781457701221

Document type:Conference article (CA)

Conference name:1st Asian Conference on Pattern Recognition, ACPR 2011

Conference date:November 28, 2011 - November 28, 2011

Conference location:Beijing, China

Conference code:90727

Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States

Abstract:Supervised learning-based methods are popular in single-image super-resolution (SR), and the underlying idea is to learn a map from input low-resolution (LR) images to target high-resolution (HR) images based on a training set. The generalization of the learned map ensures the well performance of these methods on various test images. However, the universality of these methods weakens their specificity. To enhance the performance of learning-based methods on given test images, a semi-supervised learning-based method is firstly proposed for single-image SR. In particular, test image patches are used to learn a dictionary for defining a test-data-dependent feature space. By using the learned dictionary, all LR training samples can be mapped into the test-data-dependent feature space, which makes the information contained in the training set be understood according to the given SR task. Finally, a regression function defined on the test-data-dependent feature space is learned from the refined training samples for generating SR images. The experimental results show that more details are recovered by the proposed semi-supervised method than its supervised version, which means it is a key to balance the universality and the specificity of a regression function in learning-based SR. &copy; 2011 IEEE.

Number of references:25

Main heading:Supervised learning

Controlled terms:Optical resolving power - Pattern recognition - Regression analysis - Sampling - Testing

Uncontrolled terms:Dictionary learning - Feature space - High resolution image - Learning-based methods - Least square regression - Low resolution images - Regression function - Semi-supervised - Semi-supervised learning - Semi-supervised method  - Single images - Superresolution - Test images - Training sample - Training sets - Well performance

Classification code:423.2 Non Mechanical Properties of Building Materials: Test Methods - 731.5 Robotics - 741.1 Light/Optics - 801 Chemistry - 922.2 Mathematical Statistics

DOI:10.1109/ACPR.2011.6166563

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 373>

 

Accession number:20120514730191

Title:Linear SVM classification using boosting HOG features for vehicle detection in low-altitude airborne videos

Authors:Cao, Xianbin (1); Wu, Changxia (1); Yan, Pingkun (3); Li, Xuelong (3)

Author affiliation:(1) University of Science and Technology of China, Hefei, 230026, China; (2) BeiHang University, Beijing, 100083, China; (3) Center for OPTical Imagery Analysis and Learning (OPTIMIMAL), Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, Shanxi, China

Corresponding author:Cao, X.

Source title:Proceedings - International Conference on Image Processing, ICIP

Abbreviated source title:Proc. Int. Conf. Image Process. ICIP

Monograph title:ICIP 2011: 2011 18th IEEE International Conference on Image Processing

Issue date:2011

Publication year:2011

Pages:2421-2424

Article number:6116132

Language:English

ISSN:15224880

ISBN-13:9781457713033

Document type:Conference article (CA)

Conference name:2011 18th IEEE International Conference on Image Processing, ICIP 2011

Conference date:September 11, 2011 - September 14, 2011

Conference location:Brussels, Belgium

Conference code:88213

Sponsor:IEEE; IEEE Signal Processing Society

Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States

Abstract:Visual surveillance from low-altitude airborne platforms has been widely addressed in recent years. Moving vehicle detection is an important component of such a system, which is a very challenging task due to illumination variance and scene complexity. Therefore, a boosting Histogram Orientation Gradients (boosting HOG) feature is proposed in this paper. This feature is not sensitive to illumination change and shows better performance in characterizing object shape and appearance. Each of the boosting HOG feature is an output of an adaboost classifier, which is trained using all bins upon a cell in traditional HOG features. All boosting HOG features are combined to establish the final feature vector to train a linear SVM classifier for vehicle classification. Compared with classical approaches, the proposed method achieved better performance in higher detection rate, lower false positive rate and faster detection speed. &copy; 2011 IEEE.

Number of references:9

Main heading:Aircraft detection

Controlled terms:Adaptive boosting - Image processing - Security systems - Vehicles

Uncontrolled terms:Airborne platforms - Airborne video - boosting HOG feature - Classical approach - Detection rates - False positive rates - Feature vectors - Illumination changes - Linear SVM - Low-altitude  - Moving vehicles - Object shape - Orientation gradients - Scene complexity - Urban environments - Vehicle classification - Vehicle detection - Visual surveillance

Classification code:432 Highway Transportation - 716.2 Radar Systems and Equipment - 723 Computer Software, Data Handling and Applications - 741 Light, Optics and Optical Devices - 914.1 Accidents and Accident Prevention

DOI:10.1109/ICIP.2011.6116132

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 374>

 

Accession number:20111413890962

Title:Study of the error of the reference lens in absolute spherical testing and the thermal deformation model establishment

Authors:Chen, Xu (1); Yuan, Wenquan (1); Feng, Yutao (3); Wang, Ping (1); Liu, Weiqi (1)

Author affiliation:(1) State Key Laboratory of Applied Optics, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, Jilin 130033, China; (2) Graduate University of Chinese Academy of Sciences, Beijing 100049, China; (3) Key Laboratory of Spectral Imaging Technology of Chinese Academy of Sciences, Xi'an Institute of Optics and Precision Mechanics Physics, Xi'an, Shaanxi 710119, China

Corresponding author:Chen, X.(chxu2009@126.com)

Source title:Guangxue Xuebao/Acta Optica Sinica

Abbreviated source title:Guangxue Xuebao

Volume:31

Issue:2

Issue date:February 2011

Publication year:2011

Pages:0212002

Language:Chinese

ISSN:02532239

CODEN:GUXUDC

Document type:Journal article (JA)

Publisher:Chinese Optical Society, P.O. Box 80, Xi'an, 710068, China

Abstract:Absolute measurement is an important method to improve the accuracy of the Fizeau interferometer. To achieve the high accuracy of the reference wave front in absolute spherical testing, the influence of environmental factors including temperature, gravity and clamping force was studied. The Gram-Schmidt fitting was used to fit the deformation of the reference surface in representation of the Zernike coefficients. The contribution of the thermal deformation by temperature change and the change in Zernike coefficients caused just by temperature change were compared. The model of the thermal deformation was created and the corresponding aberration mode of the reference surface was analyzed which make the separation of the deformation caused by temperature possible so that the test accuracy can be enhanced. The result indicates that the deformation of fused silica is smaller than that of K9 and zerodur on the whole while the deformation of zerodur is smaller than that of K9 and fused silica in just temperature change. When the temperature takes one degree change, the root mean square of the zerodur surface reaches 0.37 nm.

Number of references:25

Main heading:Fused silica

Controlled terms:Deformation - Laser optics - Silica - Spheres

Uncontrolled terms:Absolute measurements - Absolute spherical testing - Clamping Force - Environmental factors - Fizeau interferometers - Gram-schmidt - Reference waves - Root Mean Square - Temperature changes - Test accuracy  - Thermal deformation - Zernike - Zernike coefficient - Zerodur

Classification code:421 Strength of Building Materials; Mechanical Properties - 422 Strength of Building Materials; Test Equipment and Methods - 631 Fluid Flow - 741.1 Light/Optics - 812 Ceramics, Refractories and Glass - 812.3 Glass

DOI:10.3788/AOS201131.0212002

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 375>

 

Accession number:20113914367993

Title:Synthesis and photoluminescence of Cr-doped rod-like ZnO particles by hydrothermal method

Authors:Hang, Lianmao (1); Zhang, Zhiyong (2); Yan, Junfeng (2)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, China; (2) School of Information Science and Technology, Northwest University, Xi'an, China

Corresponding author:Hang, L.(hanglm@163.com)

Source title:Advanced Materials Research

Abbreviated source title:Adv. Mater. Res.

Volume:306-307

Monograph title:Emerging Focus on Advanced Materials

Issue date:2011

Publication year:2011

Pages:176-179

Language:English

ISSN:10226680

ISBN-13:9783037852040

Document type:Conference article (CA)

Conference name:1st International Congress on Advanced Materials 2011, AM2011

Conference date:May 13, 2011 - May 16, 2011

Conference location:Jinan, China

Conference code:86613

Publisher:Trans Tech Publications, P.O. Box 1254, Clausthal-Zellerfeld, D-38670, Germany

Abstract:Cr-doped rod-like ZnO particles with nominal 3 at% doping concentration were synthesized by hydrothermal method. The structural and optical properties of the sample were investigated by X-ray diffraction (XRD), field-emission scanning electron microscopy (FESEM) and photoluminescence (PL). The results show that the as-synthesized product is of hexagonal wurtzite structure without metallic Cr or other secondary phases and the morphology of the ZnO particles is rod shaped. The room-temperature PL spectrum of the Cr-doped rod-like ZnO particles exhibits a strong blue emission at 440nm and two weak emission bands centered at 410nm and 565nm, respectively. &copy; (2011) Trans Tech Publications, Switzerland. &copy; (2011) Trans Tech Publications, Switzerland.

Number of references:10

Main heading:Zinc oxide

Controlled terms:Hydrothermal synthesis - Optical properties - Photoluminescence - Scanning electron microscopy - X ray diffraction - X ray diffraction analysis - Zinc sulfide

Uncontrolled terms:Blue emission - Cr-doped - Doping concentration - Emission bands - Field emission scanning electron microscopy - Hexagonal wurtzite structure - Hydrothermal - Hydrothermal methods - PL spectra - Rod-shaped  - Room temperature - Secondary phasis - Structural and optical properties - ZnO - ZnO particles

Classification code:741.1 Light/Optics - 801 Chemistry - 802.2 Chemical Reactions - 804.2 Inorganic Compounds - 931.3 Atomic and Molecular Physics

DOI:10.4028/www.scientific.net/AMR.306-307.176

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 376>

 

Accession number:20111013718840

Title:Ghosting phenomena in single photon counting imagers with Vernier anode

Authors:Yang, Hao (1); Zhao, Baosheng (1); Qiurong, Yan (1); Liu, Yongan (1); Hu, Huijun (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xian Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xian 710119, China; (2) Graduate University, Chinese Academy of Sciences, Beijing 100049, China

Corresponding author:Yang, H.(yxq8519@tom.com)

Source title:Review of Scientific Instruments

Abbreviated source title:Rev. Sci. Instrum.

Volume:82

Issue:2

Issue date:February 2011

Publication year:2011

Article number:023110

Language:English

ISSN:00346748

CODEN:RSINAK

Document type:Journal article (JA)

Publisher:American Institute of Physics, 2 Huntington Quadrangle, Suite N101, Melville, NY 11747-4502, United States

Abstract:We provide the ghosting theory of two-dimensional Vernier anode based imagers. The single photon counting detection system based on Vernier anode is constructed. The ghosting, which occurs during the decoding of two-dimensional Vernier anode, and its possible solutions are described in detail. On the basis of the discussion of the decoding algorithm, the ghosting theoretical model is established. Phase conditions on which imaging ghosting can be avoided and the probability distribution function are proposed; the root causes of ghosting of two-dimensional Vernier anode are also discussed. &copy; 2011 American Institute of Physics.

Number of references:14

Main heading:Two dimensional

Controlled terms:Decoding - Distribution functions - Particle beams - Photons

Uncontrolled terms:Decoding algorithm - Detection system - Imagers - Phase conditions - Possible solutions - Root cause - Single photon counting - Theoretical models

Classification code:716.1 Information Theory and Signal Processing - 741.1 Light/Optics - 902.1 Engineering Graphics - 922.1 Probability Theory - 932.1 High Energy Physics

DOI:10.1063/1.3544018

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 377>

 

Accession number:20113914365094

Title:A new processing way for helicoid reflective mirror

Authors:Hu, Shaolei (1); Xie, Yongjun (1); Zhao, Xin (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Science (CAS), Xi'an, 710119, China; (2) Graduate University of Chinese Academy of Sciences, Beijing 100049, China

Corresponding author:Hu, S.(hushaolei0301@sina.com)

Source title:Advanced Materials Research

Abbreviated source title:Adv. Mater. Res.

Volume:314-316

Monograph title:Advanced Manufacturing Technology

Issue date:2011

Publication year:2011

Pages:94-97

Language:English

ISSN:10226680

ISBN-13:9783037852156

Document type:Conference article (CA)

Conference name:2011 International Conference on Advanced Design and Manufacturing Engineering, ADME 2011

Conference date:September 16, 2011 - September 18, 2011

Conference location:Guangzhou, China

Conference code:86611

Sponsor:Guangdong University of Technology; Huazhong University of Science and Technology; Hong Kong University of Science and Technology; Hong Kong Polytechnic University; University of Nottingham

Publisher:Trans Tech Publications, P.O. Box 1254, Clausthal-Zellerfeld, D-38670, Germany

Abstract:A novel processing way for the continuous helicoid reflective mirrors is proposed. We use an intelligent oven to accurately control the glass temperature and successfully produce a helicoid reflective mirror in B270 glass. Then we test the shape and optical properties of the helicod reflective mirror via the three-coordinate instrument measuring and interference experiment. &copy; (2011) Trans Tech Publications, Switzerland.

Number of references:9

Main heading:Optical testing

Controlled terms:Design - Glass - Manufacture - Mirrors - Optical properties

Uncontrolled terms:Glass temperatures - Helicoid - Reflective mirror - Reflective mirrors - Three-coordinate measuring machines

Classification code:408 Structural Design - 537.1 Heat Treatment Processes - 741.1 Light/Optics - 741.3 Optical Devices and Systems - 812.3 Glass

DOI:10.4028/www.scientific.net/AMR.314-316.94

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 378>

 

Accession number:20114714544614

Title:Design and implementation of cooling system for focal plane assembly of observation camera in astronomical satellite

Authors:Cheng, Pan (1); Qu, Youshan (1); Li, Huijuan (1); Tan, Jiahai (1)

Author affiliation:(1) Xi'An Institute of Optics and Precision Mechanics, CAS, Xi'an, China; (2) Graduate University, Chinese Academy of Sciences, Beijing, China

Corresponding author:Cheng, P.

Source title:2011 International Conference on Electronics, Communications and Control, ICECC 2011 - Proceedings

Abbreviated source title:Int. Conf. Electron., Commun. Control, ICECC - Proc.

Monograph title:2011 International Conference on Electronics, Communications and Control, ICECC 2011 - Proceedings

Issue date:2011

Publication year:2011

Pages:2615-2619

Article number:6066330

Language:English

ISBN-13:9781457703218

Document type:Conference article (CA)

Conference name:2011 International Conference on Electronics, Communications and Control, ICECC 2011

Conference date:September 9, 2011 - September 11, 2011

Conference location:Ningbo, China

Conference code:87394

Sponsor:Ningbo University

Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States

Abstract:In order to observe dim astronomical objects, the imaging sensor of the Astronomical Observation Camera (AOC) in the satellite needs to work at 65C to suppress its dark current noise. To achieve the low temperature environment, a cooling system on Thermoelectric Cooler (TEC) was designed. The cooling system adopted a Single Chip Microprocessor as its control computing platform and its software used self-adaptive digital PID control algorithm was developed. The data of the real-time temperatures, captured by the acquiring circuits from the temperature sensors which were mounted at the back surface of the imaging sensor, were used to be the input of the self-adaptive digital PID control algorithm, and the output calculated by the algorithm was applied to adjusted the control current of the driver circuit for the TEC, and then the temperature of Focal Plane Assembly (FPA) was cooled down or warmed up to satisfy the working requirements. Experimental results show that the designed system can control the temperature gradient of the FPA less than 1C and reach its normal working temperature 65C quickly. Its control accuracy is 2C. The practical experiment results displayed the imaging performance of the FPA was stable and the designed cooling system suppressed the dark current noise effectively to get high Signal-to-Noise Ratio images, and the designed cooling system worked stable. &copy; 2011 IEEE.

Number of references:11

Main heading:Adaptive control systems

Controlled terms:Algorithms - Astronomical satellites - Cameras - Cooling systems - Digital circuits - Electronic cooling - Fading (radio) - Focusing - Sensors - Signal to noise ratio  - Thermoelectric equipment - Thermoelectric refrigeration - Thermoelectricity - Three term control systems

Uncontrolled terms:Astronomical objects - Astronomical observation - Computing platform - Control accuracy - Control current - Dark current noise - Digital PID - Driver circuit - Focal plane assemblies - High signal-to-noise ratio  - Imaging performance - Imaging sensors - Low temperature environment - Peliter effect - Self-adaptive - Single chip microprocessor - Temperature gradient - Thermoelectric cooler - Working temperatures

Classification code:801 Chemistry - 742.2 Photographic Equipment - 731.1 Control Systems - 723 Computer Software, Data Handling and Applications - 722.4 Digital Computers and Systems - 921 Mathematics - 716.3 Radio Systems and Equipment - 711.1 Electromagnetic Waves in Different Media - 655.2 Satellites - 641.2 Heat Transfer - 615.4 Thermoelectric Energy - 716.1 Information Theory and Signal Processing

DOI:10.1109/ICECC.2011.6066330

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 379>

 

Accession number:20110913706222

Title:Confocal Fabry-Perot interferometer for frequency stabilization of laser

Authors:Pan, H.-J. (1); Ruan, P. (1); Wang, H.-W. (1); Li, F. (1)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710068, China; (2) Graduate School, Chinese Academy of Sciences, Beijing 100039, China

Corresponding author:Pan, H.-J.(dutt386@163.com)

Source title:Laser Physics

Abbreviated source title:Laser Phys.

Volume:21

Issue:2

Issue date:February 2011

Publication year:2011

Pages:336-339

Language:English

ISSN:1054660X

E-ISSN:15556611

Document type:Conference article (CA)

Publisher:Maik Nauka-Interperiodica Publishing, Profsoyuznaya Ul 90, Moscow, 117997, Russia

Abstract:The frequency shift of laser source of Doppler lidar is required in the range of a few megahertzs. To satisfy this demand, a confocal Fabry-Perot (F-P) interferometer was manufactured as the frequency standard for frequency stabilization. After analyzing and contrasting the center frequency shift of confocal Fabry-Perot interferometers that are made of three different types of material with the change of temperature, the zerodur material was selected to fabricate the interferometer, and the cavity mirrors were optically contacted onto the end of spacer. The confocal Fabry-Perot interferometer was situated within a double-walled chamber, and the change of temperature in the chamber was less than 0.01 K. The experimental results indicate that the free spectral range is 500 MHz, the full-width at half maximum is 3.33 MHz, and the finesse is 150. &copy; Pleiades Publishing, Ltd., 2011.

Number of references:20

Main heading:Fabry-Perot interferometers

Controlled terms:Fiber optic sensors - Frequency shift keying - Frequency stability - Frequency standards - Optical instruments - Optical radar - Stabilization

Uncontrolled terms:Cavity mirror - Center frequency - Confocal Fabry Perot interferometer - Doppler lidars - Double-walled - Fabry-Perot - Free spectral range - Frequency shift - Frequency stabilization - Laser sources  - Zerodur

Classification code:961 Systems Science - 951 Materials Science - 941.3 Optical Instruments - 902.2 Codes and Standards - 732.2 Control Instrumentation - 718 Telephone Systems and Related Technologies; Line Communications - 717 Optical Communication - 716.2 Radar Systems and Equipment - 716 Telecommunication; Radar, Radio and Television

DOI:10.1134/S1054660X11030170

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 380>

 

Accession number:20110913700165

Title:Structural characterizations and the third-order nonlinear optical properties of poly(2,5-didecyloxy)phenylene films modified by N⁺ ions implantation

Authors:Gao, Chao (1); Du, Weisong (1); Qiu, Shaojun (1); Lin, Qun (3); Wu, Hongcai (2); Liu, Xiaozeng (2); Guo, Hongyan (1); Liu, Jianqun (1)

Author affiliation:(1) Xi'an Modern Chemistry Research Institute, Xi'an 710065, China; (2) School of Electronics and Information Engineering, Xi'an Jiaotong University, Xi'an 710049, China; (3) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Science (CAS), Xi'an, Shaanxi 710119, China

Corresponding author:Gao, C.(chaogao74@gmail.com)

Source title:Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms

Abbreviated source title:Nucl Instrum Methods Phys Res Sect B

Volume:269

Issue:5

Issue date:March 1, 2011

Publication year:2011

Pages:513-518

Language:English

ISSN:0168583X

CODEN:NIMBEU

Document type:Journal article (JA)

Publisher:Elsevier, P.O. Box 211, Amsterdam, 1000 AE, Netherlands

Abstract:Poly(2,5-didecyloxy)phenylene (PDDOP) films implanted by 30 keV nitrogen ions (N⁺) with the dose rang of 10¹⁵-10¹⁷ ions/cm² were characterized by FTIR-ATR spectra, UV-VIS spectra and X-ray photoelectron spectroscopy, which showed that the C-H bonds of the PDDOP films were largely broken and new bonds like CC, CN and CN were formed as the increasing ion fluence. The third-order nonlinear optical susceptibilities (&chi;⁽³⁾) were measured by degenerate four-wave mixing (DFWM) technique at 532 nm. The results demonstrated that the (&chi;⁽³⁾) value of PDDOP films was maximized to 4.19 &times; 10^-11 esu at an ion dose of 1.15 &times; 10¹⁷ ions/cm², which was 4.4 times larger than that of the pristine film. The enhanced third-order nonlinear properties may attribute to the enlarged expansion coefficient and the enhanced absorption coefficient of the bombarded films at proper N⁺ ions dose. &copy; 2010 Elsevier B.V. All rights reserved.

Number of references:28

Main heading:Optical properties

Controlled terms:Aromatic compounds - Four wave mixing - Ion implantation - X ray photoelectron spectroscopy

Uncontrolled terms:Bombarded films - C-H bond - Degenerate four wave mixing - Enhanced absorption - Expansion coefficients - FTIR-ATR spectra - Ion dose - Ion fluences - Ions implantation - Nitrogen ions  - Non-linear optical properties - Nonlinear properties - Poly(2,5-didecyloxy)phenylene - Pristine films - Structural characterization - Third order nonlinear optical properties - Third order nonlinear optical susceptibility - Third-order - UV-vis spectra

Classification code:741.1 Light/Optics - 801 Chemistry - 804.1 Organic Compounds - 932.1 High Energy Physics

DOI:10.1016/j.nimb.2010.12.040

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 381>

 

Accession number:20112414058020

Title:Cavity dumped laser using fast GaAs photoconductive switch

Authors:Zhu, Shaolan (1); Zhao, Wei (1); Liu, Baiyu (1); Shi, Wei (3); Yang, Yanlong (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Acad. of Sci., Xi'an, Shaanxi 710119, China; (2) Graduate University of Chinese Acad. of Sci., Beijing 100049, China; (3) Department of Applied Physics, Xi'an University of Technology, Xi'an, Shaanxi 710048, China

Corresponding author:Zhu, S.(slzhu@opt.ac.cn)

Source title:Zhongguo Jiguang/Chinese Journal of Lasers

Abbreviated source title:Zhongguo Jiguang

Volume:38

Issue:5

Issue date:May 2011

Publication year:2011

Article number:0502003

Language:Chinese

ISSN:02587025

CODEN:ZHJIDO

Document type:Journal article (JA)

Publisher:Science Press, 18,Shuangqing Street,Haidian, Beijing, 100085, China

Abstract:Cavity dumping is an effective technique for generating Q-switched laser pulses of relatively large energy and extremely short time duration, and the width of Q-switched pulses is primarily a function of the oscillator cavity length. The solid state lateral semi-insulating GaAs photoconductive semiconductor switch (PCSS) has the unique ability to handle high power at very fast response time with very little timing jitter. A novel and effective technique of cavity dumping laser for generating short Q-switched laser pulses with a GaAs PCSS is presented. In a flashlamp pumped Nd:YAG laser with 20 cm long stable resonator, 1.7 ns short laser pulses have been obtained, and the pulse to pulse duration instability is less than 7% and energy instability is less than 3%.

Number of references:14

Main heading:Neodymium lasers

Controlled terms:Electric switchgear - Gallium alloys - Gallium arsenide - Laser pulses - Neodymium - Optical pumping - Photoconducting devices - Photoconductivity - Q switching - Resonators  - Semiconducting gallium - Semiconductor lasers - Semiconductor switches - Timing jitter

Uncontrolled terms:Cavity dumping - Electro-optical - GaAs photoconductive switch - Nd:YAG laser - Stable resonator

Classification code:744 Lasers - 741.1 Light/Optics - 718 Telephone Systems and Related Technologies; Line Communications - 717 Optical Communication - 716 Telecommunication; Radar, Radio and Television - 804 Chemical Products Generally - 714.2 Semiconductor Devices and Integrated Circuits - 712.1.1 Single Element Semiconducting Materials - 706.2 Electric Power Lines and Equipment - 549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals - 547.2 Rare Earth Metals - 714 Electronic Components and Tubes

DOI:10.3788/CJL201138.0502003

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 382>

 

Accession number:20114814567925

Title:Shadow detection in remotely sensed images based on self-adaptive feature selection

Authors:Liu, Jiahang (1); Fang, Tao (1); Li, Deren (3)

Author affiliation:(1) Department of Automation, Ministry of Education, Shanghai Jiao Tong University, Shanghai 200240, China; (2) Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (3) State Key Laboratory of Information Engineering in Surveying, Mapping, and Remote Sensing, Wuhan University, Wuhan 430079, China

Corresponding author:Liu, J.(jhliu003@gmail.com)

Source title:IEEE Transactions on Geoscience and Remote Sensing

Abbreviated source title:IEEE Trans Geosci Remote Sens

Volume:49

Issue:12 PART 2

Issue date:December 2011

Publication year:2011

Pages:5092-5103

Article number:5934408

Language:English

ISSN:01962892

CODEN:IGRSD2

Document type:Journal article (JA)

Publisher:Institute of Electrical and Electronics Engineers Inc., 445 Hoes Lane / P.O. Box 1331, Piscataway, NJ 08855-1331, United States

Abstract:Shadows in remotely sensed images create difficulties in many applications; thus, they should be effectively detected prior to further processing. This paper presents a novel semiautomatic shadow detection method that meets the requirements of both high accuracy and wide practicability in remote sensing applications. The proposed method uses only the properties derived from the shadow samples to dynamically generate a feature space and calculate decision parameters; then, it employs a series of transformations to separate shadow and nonshadow regions. The proposed method can detect shadows from both color and gray images. If the chromatic properties of color images do not agree with the defined rules through the shadow samples, then the shadow detection process will automatically reduce to the process for gray images. As the shadow samples are manually selected from the input image by the user, the derived parameters conform well to the characteristics of the input image. Experiments and comparisons indicate that the proposed self-adaptive feature selection algorithm is accurate, effective, and widely applicable to shadow detection in practical applications. &copy; 2011 IEEE.

Number of references:25

Main heading:Feature extraction

Controlled terms:Adaptive algorithms - Image analysis - Image segmentation - Remote sensing

Uncontrolled terms:Chromatic information - Remotely sensed images - Self-adaptive - Shadow detections - shadow property

Classification code:921 Mathematics - 741.1 Light/Optics - 741 Light, Optics and Optical Devices - 731.1 Control Systems - 723.2 Data Processing and Image Processing - 723 Computer Software, Data Handling and Applications - 716 Telecommunication; Radar, Radio and Television

DOI:10.1109/TGRS.2011.2158221

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 383>

 

Accession number:20114514500340

Title:Phase-shifting Zernike phase contrast microscopy for quantitative phase measurement

Authors:Gao, Peng (1); Yao, Baoli (1); Harder, Irina (1); Lindlein, Norbert (1); Torcal-Milla, Francisco Jose (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, China; (2) Max-Planck-Institute for the Science of Light, Germany; (3) Institute of Optics, Information and Photonics, University of Erlangen, Germany

Corresponding author:Yao, B.(yaobl@opt.ac.cn)

Source title:Optics Letters

Abbreviated source title:Opt. Lett.

Volume:36

Issue:21

Issue date:November 1, 2011

Publication year:2011

Pages:4305-4307

Language:English

ISSN:01469592

E-ISSN:15394794

CODEN:OPLEDP

Document type:Journal article (JA)

Publisher:Optical Society of America, 2010 Massachusetts Ave, NW, Washington, DC, DC 20036-1023, United States

Abstract:Zernike phase contrast microscopy is extended and combined with a phase-shifting mechanism to perform quantitative phase measurements of microscopic objects. Dozens of discrete point light sources on a ring are constructed for illumination. For each point light source, three different levels of point-like phase steps are designed, which are alternatively located along a ring on a silica plate to perform phase retardation on the undiffracted (dc) component of the object waves. These three levels of the phase steps are respectively selected by rotating the silica plate. Thus, quantitative evaluation of phase specimens can be performed via phase-shifting mechanism. The proposed method has low "halo" and "shade-off" effects, low coherent noise level, and high lateral resolution due to the improved illumination scheme. &copy; 2011 Optical Society of America.

Number of references:13

Main heading:Phase measurement

Controlled terms:Light sources - Silica

Uncontrolled terms:Coherent noise - Discrete points - High-lateral resolution - Microscopic objects - Object waves - Phase retardation - Phase steps - Phase-shifting - Point light source - Quantitative evaluation  - Quantitative phase measurement - Zernike phase contrast

Classification code:744 Lasers - 812 Ceramics, Refractories and Glass - 942.2 Electric Variables Measurements

DOI:10.1364/OL.36.004305

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 384>

 

Accession number:20115214631709

Title:Studies on crystal attitude error tolerance in double crystal monochromator

Authors:Yang, Xiao-Xu (1); Jiang, Bo (1); Guo, Zhi-Li (1); Ma, Ming (1); Zhou, Si-Zhong (1); Zhao, Shi-Min (2)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Science, Xi'an, 710119, China; (2) Taiyuan Satellite Launch Center, Taiyuan, 030027, China

Corresponding author:Yang, X.-X.(yxx@opt.ac.cn)

Source title:Procedia Engineering

Abbreviated source title:Procedia Eng.

Volume:15

Monograph title:2011 International Conference on Advanced in Control Engineering and Information Science, CEIS 2011

Issue date:2011

Publication year:2011

Pages:5389-5394

Language:English

ISSN:18777058

Document type:Conference article (CA)

Conference name:2011 International Conference on Advanced in Control Engineering and Information Science, CEIS 2011

Conference date:August 18, 2011 - August 19, 2011

Conference location:Dali, Yunnam, China

Conference code:87786

Publisher:Elsevier Ltd, Langford Lane, Kidlington, Oxford, OX5 1GB, United Kingdom

Abstract:The crystal attitude is necessary to be adjusted with the Bragg angle adjustment process because these crystals are moved to keep a fixed exit beam position and other reasons. The adjustment accuracy of these crystals attitude has some influence for Bragg angle, and the energy accuracy of output beam is affected father. These relationships between Bragg angle accuracy and crystal attitude angle are given. The analyzing results show that yaw angle of the first crystal has no influence over Bragg angle. Roll angle and pitch angle of double crystals have different influence over Bragg angle. &copy; 2011 Published by Elsevier Ltd.

Number of references:6

Main heading:Monochromators

Controlled terms:Crystals - Information science - Synchrotron radiation

Uncontrolled terms:Attitude angle - Attitude error - Beam positions - Bragg angles - Double crystals - Double-crystal monochromators - Output beam - Pitch angle - Roll angle - Yaw angles

Classification code:741.3 Optical Devices and Systems - 903 Information Science - 932.1.1 Particle Accelerators - 933.1 Crystalline Solids

DOI:10.1016/j.proeng.2011.08.999

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 385>

 

Accession number:20111413890950

Title:Spectral discrimination method information divergence combined with gradient angle

Authors:Zhang, Xiu-Bao (1); Yuan, Yan (1); Jing, Juan-Juan (2); Sun, Cheng-Ming (1); Wang, Qian (1)

Author affiliation:(1) Key Laboratory of Precision Opto-Mechatronics Technology, Ministry of Education, Beihang University, Beijing 100191, China; (2) Xi'an Institute of Optics and Precision Mechanics, Chinese Acad. of Sci., Xi'an 710119, China; (3) Graduate University of Chinese Acad. of Sci., Beijing 100049, China

Corresponding author:Zhang, X.-B.(xiubaozhang@yahoo.com.cn)

Source title:Guang Pu Xue Yu Guang Pu Fen Xi/Spectroscopy and Spectral Analysis

Abbreviated source title:Guang Pu Xue Yu Guang Pu Fen Xi

Volume:31

Issue:3

Issue date:March 2011

Publication year:2011

Pages:853-857

Language:Chinese

ISSN:10000593

CODEN:GYGFED

Document type:Journal article (JA)

Publisher:Science Press, 18,Shuangqing Street,Haidian, Beijing, 100085, China

Abstract:The present paper proposes a spectral discrimination method combining spectral information divergence with spectral gradient angle (SID&times;tan(SGA<inf>&pi;/2</inf>)) which overcomes the shortages of the existing methods which can not take the whole spectral shape and local characteristics into account simultaneously. Using the simulation spectra as input data, according to the interferogram acquirement principle and spectrum recovery algorithm of the temporally and spatially modulated Fourier transform imaging spectrometer (TSMFTIS), we simulated the distortion spectra recovery process of the TMSFTIS in different maximum mix ratio and distinguished the difference between the recovered spectra and the true spectrum by different spectral discrimination methods. The experiment results show that the SID&times;tan(SGA<inf>&pi;/2</inf>) can not only identify the similarity of the whole spectral shapes, but also distinguish local differences of the spectral characteristics. A comparative study was conducted among the different discrimination methods. The results have validated that the SID&times;tan(SGA<inf>&pi;/2</inf>) has a significant improvement in the discriminatory ability.

Number of references:18

Main heading:Fourier transforms

Controlled terms:Metadata - Recovery - Spectrometers - Spectrometry - Tanning

Uncontrolled terms:Comparative studies - Existing method - Fourier transform imaging spectrometers - Gradient angle - Information divergence - Input datas - Interferograms - Local characteristics - Recovery algorithms - Recovery process  - Spectral characteristics - Spectral discrimination method - Spectral gradients - Spectral information divergences - Spectral shapes - Temporally and spatially modulated fourier transform imaging spectrometer

Classification code:531 Metallurgy and Metallography - 723 Computer Software, Data Handling and Applications - 801 Chemistry - 802 Chemical Apparatus and Plants; Unit Operations; Unit Processes - 921.3 Mathematical Transformations

DOI:10.3964/j.issn.1000-0593(2011)03-0853-05

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 386>

 

Accession number:20113214224375

Title:Theoretic analysis on mutual injection phase-locking fiber laser array

Authors:Zhou, Liang (1); Duan, Kailiang (1); Zhao, Wei (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 030001, China

Corresponding author:Zhou, L.(zql_zhouliang@126.com)

Source title:Chinese Optics Letters

Abbreviated source title:Chin. Opt. Lett.

Volume:9

Issue:SUPPL. 1

Issue date:June 2011

Publication year:2011

Pages:S10305

Language:English

ISSN:16717694

Document type:Journal article (JA)

Publisher:Science Press, 18,Shuangqing Street,Haidian, Beijing, 100085, China

Abstract:We report on a new technique of mutual injection phase-locking fiber-laser array. This technique uses a 45&deg; beam splitter as coupling device. Injection phase-locking process of the fiber-laser array is simulated and analyzed. Results show that constant values of phase differences are related to initial phases. Reflectivity of the beam splitter and transmissivity of cavity reflectors should be properly optimized in order to make injection phase-locking easier. &copy; 2011 Chinese Optics Letters.

Number of references:12

Main heading:Reflection

Controlled terms:Fiber lasers - Optical instruments - Prisms

Uncontrolled terms:Coupling devices - Fiber laser array - Fiber-laser arrays - Initial phasis - Mutual injection - Phase difference - Phase-locking - Theoretic analysis - Transmissivity

Classification code:711 Electromagnetic Waves - 741.1.2 Fiber Optics - 741.3 Optical Devices and Systems

DOI:10.3788/COL201109.S10305

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 387>

 

Accession number:20114214429351

Title:Compressed hyperspectral image sensing with joint sparsity reconstruction

Authors:Liu, Haiying (1); Li, Yunsong (1); Zhang, Jing (1); Song, Juan (1); Lv, Pei (2)

Author affiliation:(1) State Key Lab. of Integrated Service Networks, Xidian University, Xi'an, 710071, China; (2) Xi'an Institute of Optics and Precision Mechanics of CAS, Xi'an, 710119, China

Corresponding author:Liu, H.(hyliu@mail.xidian.edu.cn)

Source title:Proceedings of SPIE - The International Society for Optical Engineering

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:8157

Monograph title:Satellite Data Compression, Communications, and Processing VII

Issue date:2011

Publication year:2011

Article number:815703

Language:English

ISSN:0277786X

CODEN:PSISDG

ISBN-13:9780819487674

Document type:Conference article (CA)

Conference name:Satellite Data Compression, Communications, and Processing VII

Conference date:August 23, 2011 - August 24, 2011

Conference location:San Diego, CA, United states

Conference code:86903

Sponsor:The Society of Photo-Optical Instrumentation Engineers (SPIE)

Publisher:SPIE, P.O. Box 10, Bellingham, WA 98227-0010, United States

Abstract:Recent compressed sensing (CS) results show that it is possible to accurately reconstruct images from a small number of linear measurements via convex optimization techniques. In this paper, according to the correlation analysis of linear measurements for hyperspectral images, a joint sparsity reconstruction algorithm based on interband prediction and joint optimization is proposed. In the method, linear prediction is first applied to remove the correlations among successive spectral band measurement vectors. The obtained residual measurement vectors are then recovered using the proposed joint optimization based POCS (projections onto convex sets) algorithm with the steepest descent method. In addition, a pixel-guided stopping criterion is introduced to stop the iteration. Experimental results show that the proposed algorithm exhibits its superiority over other known CS reconstruction algorithms in the literature at the same measurement rates, while with a faster convergence speed. &copy; 2011 Copyright Society of Photo-Optical Instrumentation Engineers (SPIE).

Number of references:11

Main heading:Data compression

Controlled terms:Algorithms - Convergence of numerical methods - Convex optimization - Data handling - Forecasting - Independent component analysis - Optimization - Remote sensing - Set theory - Signal reconstruction  - Steepest descent method

Uncontrolled terms:compressive sensing (CS) - Hyperspectral imagery - Linear prediction - Projections onto convex sets - Steepest descent

Classification code:716.1 Information Theory and Signal Processing - 723.2 Data Processing and Image Processing - 723.4 Artificial Intelligence - 731.1 Control Systems - 921 Mathematics

DOI:10.1117/12.895425

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 388>

 

Accession number:20120114659116

Title:Growth of short-period InAs/GaSb superlattices for infrared sensing

Authors:Wang, Tao (1); Yang, Jin (1); Yin, Fei (1); Wang, Jing-Wei (1); Hu, Ya-Nan (1); Zhang, Li-Chen (1); Yin, Jing-Zhi (2)

Author affiliation:(1) State Key Laboratory of Transient Optics and Technology, Xi'an Institute of Optics and Precision Mechanics, Chinese Acad. of Sci., Xi'an 710119, China; (2) State Key Laboratory on Integrated Optoelectronics, Jilin University, Changchun 130012, China; (3) Graduate School of Chinese Acad. of Sci., Beijing 100049, China

Corresponding author:Yang, J.(yjn0131@163.com)

Source title:Hongwai Yu Haomibo Xuebao/Journal of Infrared and Millimeter Waves

Abbreviated source title:Hongwai Yu Haomibo Xuebao

Volume:30

Issue:6

Issue date:December 2011

Publication year:2011

Pages:511-513+550+555

Language:Chinese

ISSN:10019014

CODEN:HHXUEZ

Document type:Journal article (JA)

Publisher:Chinese Optical Society, 420 Zhong Shan Bei Yi Road, Shanghai, 200083, China

Abstract:The InAs/GaSb superlattice were prepared by metal organic chemical vapor deposition (MOCVD) on GaSb substrate. The optimized thickness and the various growth parameters were explored as well as the importance of source flux control. The photoluminescence (PL) spectra, x-ray diffraction data (XRD) and the surface topography map showed that the superlattice can response to incident light with long wavelength of 10 &mu;m, and has good surface morphology and epitaxial layer quality.

Number of references:12

Main heading:Superlattices

Controlled terms:Atomic force microscopy - Energy gap - Gallium alloys - Indium antimonides - Industrial chemicals - Metallorganic chemical vapor deposition - Organic chemicals - Organometallics - Surface topography - Vapor deposition  - X ray diffraction

Uncontrolled terms:Atomic force microscopes - Growth parameters - InAs/GaSb superlattices - Incident light - Infrared sensing - Long wavelength - Metal organic chemical vapor deposition (MOCVD) - Photoluminescence spectrum - PL spectra - Source flux  - X-ray diffraction data - XRD

Classification code:931.3 Atomic and Molecular Physics - 931.2 Physical Properties of Gases, Liquids and Solids - 804.1 Organic Compounds - 804 Chemical Products Generally - 802.2 Chemical Reactions - 549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals - 531 Metallurgy and Metallography

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 389>

 

Accession number:20113614296278

Title:Design and application of TEC controller Using in CCD camera

Authors:Gan, Yu-Quan (1); Ge, Wei (1); Qiao, Wei-Dong (1); Lu, Di (1); Lv, Juan (1)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Science, Xi'an 710119, China

Corresponding author:Gan, Y.-Q.

Source title:Proceedings of SPIE - The International Society for Optical Engineering

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:8196

Monograph title:International Symposium on Photoelectronic Detection and Imaging 2011: Space Exploration Technologies and Applications

Issue date:2011

Publication year:2011

Article number:81961E

Language:English

ISSN:0277786X

CODEN:PSISDG

ISBN-13:9780819488374

Document type:Conference article (CA)

Conference name:International Symposium on Photoelectronic Detection and Imaging 2011: Space Exploration Technologies and Applications

Conference date:May 24, 2011 - May 26, 2011

Conference location:Beijing, China

Conference code:86296

Sponsor:Chinese Society of Astronautics (CAS)

Publisher:SPIE, P.O. Box 10, Bellingham, WA 98227-0010, United States

Abstract:Thermoelectric cooler (TEC) is a kind of solid hot pump performed with Peltier effect. And it is small, light and noiseless. The cooling quantity is proportional to the TEC working current when the temperature difference between the hot side and the cold side keeps stable. The heating quantity and cooling quantity can be controlled by changing the value and direction of current of two sides of TEC. So, thermoelectric cooling technology is the best way to cool CCD device. The E2V's scientific image sensor CCD47-20 integrates TEC and CCD together. This package makes easier of electrical design. Software and hardware system of TEC controller are designed with CCD47-20 which is packaged with integral solid-state Peltier cooler. For hardware system, 80C51 MCU is used as CPU, 8-bit ADC and 8-bit DAC compose of closed-loop controlled system. Controlled quantity can be computed by sampling the temperature from thermistor in CCD. TEC is drove by MOSFET which consists of constant current driving circuit. For software system, advanced controlled precision and convergence speed of TEC system can be gotten by using PID controlled algorithm and tuning proportional, integral and differential coefficient. The result shows: if the heat emission of the hot side of TEC is good enough to keep the temperature stable, and when the sampling frequency is 2 seconds, temperature controlled velocity is 5&deg;C/min. And temperature difference can reach -40&deg;C, controlled precision can achieve 0.3&deg;C. When the hot side temperature is stable at 25&deg;C, CCD temperature can reach -23&deg;C, and thermal noise of CCD is less than 1e-/pix/s. The controlled system restricts the dark-current noise of CCD and increases SNR of the camera system. &copy; 2011 SPIE.

Number of references:4

Main heading:CCD cameras

Controlled terms:Charge coupled devices - Cold working - Convergence of numerical methods - Cooling - Cooling systems - Hot working - Peltier effect - Proportional control systems - Pumps - Space research  - Thermoelectric equipment - Thermoelectric refrigeration - Three term control systems

Uncontrolled terms:Camera systems - CCD device - Closed-loop - Cold side - Constant current - Controlled precision - Controlled system - Convergence speed - Design and application - Differential coefficient  - Electrical design - Hardware system - Heat emission - MOS-FET - Peltier coolers - Sampling frequencies - Scientific images - SNR - Software systems - Temperature differences  - Temperature stable - Thermoelectric cooler - Thermoelectric cooling technology - Working current

Classification code:921.6 Numerical Methods - 731.1 Control Systems - 714.2 Semiconductor Devices and Integrated Circuits - 656.2 Space Research - 643.1 Space Heating - 641.2 Heat Transfer - 618.2 Pumps - 615.4 Thermoelectric Energy - 535.2 Metal Forming

DOI:10.1117/12.900697

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 390>

 

Accession number:20112114000148

Title:Arbitrary ROI-based wavelet video coding

Authors:Lan, Xuguang (1); Zheng, Nanning (1); Ma, Wen (1); Yuan, Yuan (2)

Author affiliation:(1) Institute of Artificial Intelligence and Robotics, Xi'an Jiaotong University, China; (2) Center for OPTical IMagery Analysis and Learning (OPTIMAL), State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, Shaanxi, China

Corresponding author:Yuan, Y.(yuany@opt.ac.cn)

Source title:Neurocomputing

Abbreviated source title:Neurocomputing

Volume:74

Issue:12-13

Issue date:June 2011

Publication year:2011

Pages:2114-2122

Language:English

ISSN:09252312

E-ISSN:18728286

CODEN:NRCGEO

Document type:Journal article (JA)

Publisher:Elsevier, P.O. Box 211, Amsterdam, 1000 AE, Netherlands

Abstract:This paper presents a novel arbitrary shape region of interest (ROI) coding for scalable wavelet video codec. The motion information of the ROIs is estimated by macroblock padding and polygon matching. The derived motion vectors are set as the motion trajectory of the samples to generate a one-dimensional temporal signal. This signal is then filtered to reduce the temporal redundancy using motion compensated temporal filtering for arbitrary shape ROI. Compared to traditional non-ROI coding, the reconstructed quality of the ROI coding can be significantly improved at low bit-rates. The efficiency of motion compensated temporal filtering (MCTF) based on arbitrary ROI is also compared with that of the video object coding in MPEG-4. Based on large number of experiments, the ability of the MCTF to reduce the temporal redundancy is demonstrated as better than (or at least comparable to) that of MPEG-4. &copy; 2011.

Number of references:30

Main heading:Image coding

Controlled terms:Motion estimation - Motion Picture Experts Group standards - Redundancy

Uncontrolled terms:Arbitrary shape - Bitrates - Macro block - Motion information - Motion trajectories - Motion Vectors - Motion-compensated temporal filtering - Region-of-interest coding - ROI - ROI coding  - Scalable video coding - Temporal redundancy - Temporal signals - Video objects - Wavelet - Wavelet video codecs - Wavelet video coding

Classification code:716.1 Information Theory and Signal Processing - 723.2 Data Processing and Image Processing - 741 Light, Optics and Optical Devices - 903 Information Science - 914 Safety Engineering

DOI:10.1016/j.neucom.2011.01.012

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 391>

 

Accession number:20110813694137

Title:Image quality evaluation of light field photography

Authors:Fu, Qiang (1); Zhou, Zhiliang (2); Yuan, Yan (3); Xiangli, Bin (4)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, CAS, 17 Xinxi Road, Xi'an, Shaanxi, 710119, China; (2) Dept. of Precision Machinery and Precision Instrumentation, Univ. of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui, 230026, China; (3) Key Laboratory of Precision Opto-mechatronics Technology, Ministration of Education, Beihang University, 37 Xueyuan Road, Beijing, 100191, China; (4) Academy of Opto-electronics, CAS, 95 Zhongguancun East Road, Beijing, 100190, China

Corresponding author:Fu, Q.

Source title:Proceedings of SPIE - The International Society for Optical Engineering

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:7867

Monograph title:Proceedings of SPIE-IS and T Electronic Imaging - Image Quality and System Performance VIII

Issue date:2011

Publication year:2011

Article number:78670F

Language:English

ISSN:0277786X

CODEN:PSISDG

ISBN-13:9780819484048

Document type:Conference article (CA)

Conference name:Image Quality and System Performance VIII

Conference date:January 24, 2011 - January 26, 2011

Conference location:San Francisco, CA, United states

Conference code:83709

Sponsor:The Society for Imaging Science and Technology (IS and T); The Society of Photo-Optical Instrumentation Engineers (SPIE)

Publisher:SPIE, P.O. Box 10, Bellingham, WA 98227-0010, United States

Abstract:Light field photography captures 4D radiance information of a scene. Digital refocusing and digital correction of aberrations could be done after the photograph is taken. However, capturing 4D light field is costly and tradeoffs between different image quality metrics should be made and evaluated. This paper explores the effects of light field photography on image quality by quantitatively evaluating some basic criteria for an imaging system. A simulation approach was first developed by ray-tracing a designed light field camera. A standard testing chart followed by ISO 12233 was provided as the input scene. A sequence of light field raw images were acquired and processed by light field rendering methods afterwards. Through-focus visual resolution and MTF were calculated and analyzed. As a comparison, the same tests were taken for the same main lens system as the results of conventional photography. An experimental light field system was built up and its performance was tested. This work helps better understanding the pros and cons of light field photography in contrast with conventional imaging methods and perceiving the way to optimize the joint digital-optical design of the system. &copy; 2011 SPIE-IS&amp;T.

Number of references:19

Main heading:Image quality

Controlled terms:Optical design - Optical transfer function - Photography - Quality control

Uncontrolled terms:Depth of field - ISO 12233 - Light field photography - MTF - System performance

Classification code:741 Light, Optics and Optical Devices - 741.1 Light/Optics - 746 Imaging Techniques - 913.3 Quality Assurance and Control

DOI:10.1117/12.872486

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 392>

 

Accession number:20112414066669

Title:Optical bistability in metal-insulator-metal plasmonic Bragg waveguides with Kerr nonlinear defects

Authors:Lu, Hua (1); Liu, Xueming (1); Gong, Yongkang (1); Mao, Dong (1); Wang, Leiran (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China

Corresponding author:Liu, X.(liuxm@opt.ac.cn)

Source title:Applied Optics

Abbreviated source title:Appl. Opt.

Volume:50

Issue:10

Issue date:April 1, 2011

Publication year:2011

Pages:1307-1311

Language:English

ISSN:1559128X

E-ISSN:15394522

CODEN:APOPAI

Document type:Journal article (JA)

Publisher:Optical Society of America, 2010 Massachusetts Ave, NW, Washington, DC, DC 20036-1023, United States

Abstract:We numerically investigate the characteristics of the defect mode and the nonlinear effect of optical bistability in metal-insulator-metal (MIM) plasmonic Bragg grating waveguides with Kerr nonlinear defects. By means of finite-difference time-domain simulations, we find that the defect mode peak exhibits a blueshift and height-rise by enlarging the width of the defect layer, and it has a redshift and height-fall with the increase of the dielectric constant of defect layer. Obvious optical bistability is obtained in our waveguides with a length of less than 2 &mu;m. The results show that our structure could be applied to the design of all-optical switching in highly integrated optical circuits. &copy; 2011 Optical Society of America.

Number of references:26

Main heading:MIM devices

Controlled terms:Defects - Finite difference time domain method - Metal insulator boundaries - Metals - Optical bistability - Optical Kerr effect - Photonic integration technology - Plasmons - Semiconductor insulator boundaries - Waveguides

Uncontrolled terms:All-optical switching - Blue shift - Bragg waveguide - Defect layers - Defect mode - Finite difference time domain simulations - Grating waveguides - Highly integrated - Metal insulator metals - Nonlinear defects  - Nonlinear effect - Plasmonic - Red shift

Classification code:951 Materials Science - 921 Mathematics - 741.1.1 Nonlinear Optics - 741.1 Light/Optics - 714.3 Waveguides - 714.2 Semiconductor Devices and Integrated Circuits - 712.1 Semiconducting Materials - 531 Metallurgy and Metallography - 423 Non Mechanical Properties and Tests of Building Materials

DOI:10.1364/AO.50.001307

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 393>

 

Accession number:20114114413433

Title:Influence of the initial chirp on the supercontinuum generation in silicon-on-insulator waveguide

Authors:Wen, J. (1); Liu, H. (1); Huang, N. (1); Sun, Q. (1); Zhao, W. (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Science (CAS), Xi'an 710119, China

Corresponding author:Wen, J.(liuhongjun@opt.ac.cn)

Source title:Applied Physics B: Lasers and Optics

Abbreviated source title:Appl Phys B

Volume:104

Issue:4

Issue date:September 2011

Publication year:2011

Pages:867-871

Language:English

ISSN:09462171

CODEN:APBOEM

Document type:Journal article (JA)

Publisher:Springer Verlag, Tiergartenstrasse 17, Heidelberg, D-69121, Germany

Abstract:We propose a practical method to broaden the bandwidth of supercontinuum generated in silicon-on-insulator (SOI) waveguide by controlling the initial chirp of inputting femtosecond pulses, which has the main impact on the initial stage of the spectral broadening caused by the self-phase modulation (SPM) effect. The numerical results show that the bandwidth and flatness of the supercontinuum generated in SOI waveguide are sensitive to the initial chirp of inputting femtosecond pulses, the supercontinuum bandwidth can be remarkably enhanced by inputting positive chirp femtosecond pulses with a decreased propagation distance required by soliton fission, and the maximum bandwidth of supercontinuum can be increased to 1500 nm. &copy; 2011 Springer-Verlag.

Number of references:37

Main heading:Chirp modulation

Controlled terms:Bandwidth - Electromagnetic pulse - Self phase modulation - Solitons - Ultrashort pulses - Waveguides

Uncontrolled terms:Initial chirp - Initial stages - Numerical results - Positive chirp - Practical method - Propagation distances - Silicon on insulator waveguide - SOI waveguides - Soliton fission - Spectral broadening  - Supercontinuum - Supercontinuum generations

Classification code:931.3 Atomic and Molecular Physics - 744.1 Lasers, General - 741.1.1 Nonlinear Optics - 716.1 Information Theory and Signal Processing - 716 Telecommunication; Radar, Radio and Television - 714.3 Waveguides - 701 Electricity and Magnetism

DOI:10.1007/s00340-011-4496-1

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 394>

 

Accession number:20114814570319

Title:Optical design of visible/infrared integrative camera

Authors:Yang, Lihua (1); Fan, Xuewu (1); Zou, Gangyi (1); Yu, Shunjing (3)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (2) Graduate University of the Chinese Academy of Sciences, Beijing 100049, China; (3) Shanghai Engineering Centre for Microsatellites, Shanghai 200050, China

Corresponding author:Yang, L.(Lihua519@yahoo.com.cn)

Source title:Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering

Abbreviated source title:Hongwai yu Jiguang Gongcheng Infrared Laser Eng.

Volume:40

Issue:10

Issue date:October 2011

Publication year:2011

Pages:1992-1996

Language:Chinese

ISSN:10072276

Document type:Journal article (JA)

Publisher:Chinese Society of Astronautics, P.O. Box 225-32, Tianjin, 300192, China

Abstract:The optical system design of the visible/infrared integrative camera was introduced. In the system, the primary mirror was used for two wave bands together whose aperture was 1 m. In the visible band of 450-900 nm, the coaxial three-mirror-anastigmat system was chosen with focal length of 12.0 m and field of view of 1.5&deg; &times; 0.5&deg;, and TDICCD was used. In the infrared band of 8-12&mu;m, the prime focus system was chosen with focal length of 2.0 m and field of view of 2.0&deg;, which was composed of the primary mirror and three Ge lenses, and uncooled infrared detector was used. The first lens of the prime focus system was set behind the secondary mirror, the retainer of which can circumrotate 180&deg;. When the secondary mirror was switched into the system, the visible camera was working, and when the secondary mirror was switched out of the system, the infrared camera was working. The optical system combines the two wave bands cameras together, which reduces the quality and volume of the camera, and realize the double uses of one star in its orbit.

Number of references:8

Main heading:Mirrors

Controlled terms:Cameras - Germanium - Light - Optical design - Optical systems - Switches - Systems analysis

Uncontrolled terms:Field of views - Focal lengths - Infra-red cameras - Infrared bands - Infrared light - Primary mirrors - Prime-focus - Secondary mirror - TDI-CCD - Three mirror anastigmats  - Uncooled infrared detectors - Visible band - Visible light - Wavebands

Classification code:741.1 Light/Optics - 741.3 Optical Devices and Systems - 742.2 Photographic Equipment - 804 Chemical Products Generally - 961 Systems Science

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 395>

 

Accession number:20112314036748

Title:All-normal dispersion, figure-eight, tunable passively mode-locked fiber laser with an invisible and changeable intracavity bandpass filter

Authors:Li, X.H. (1); Wang, Y.S. (1); Zhao, W. (1); Zhang, W. (1); Yang, Z. (1); Hu, X.H. (1); Wang, H.S. (1); Wang, X.L. (1); Zhang, Y.N. (1); Gong, Y.K. (1); Li, C. (1); Shen, D.Y. (1)

Author affiliation:(1) State Key Laboratory of Transient Optics, Photonics; xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (2) School of Science, Xi'An Jiaotong University, Xi'an 710049, China

Corresponding author:Li, X. H.

Source title:Laser Physics

Abbreviated source title:Laser Phys.

Volume:21

Issue:5

Issue date:May 2011

Publication year:2011

Pages:940-944

Language:English

ISSN:1054660X

E-ISSN:15556611

Document type:Journal article (JA)

Publisher:Maik Nauka-Interperiodica Publishing, Profsoyuznaya Ul 90, Moscow, 117997, Russia

Abstract:We report dissipative solitons generation in the figure-8 all-normal dispersion fiber ring laser. The steep edge of the output optical spectrum results from the filtering effect of NOLM together with polarization controllers (PCs). No any physical bandpass filters are used in the cavity. Moreover, the output wavelength can be tuned in a wide range of about 20 nm. In the long-wavelength region, the spectral filtering effect of NOLM becomes weaker and output spectrum shows only one steep side. Filtering effect can perform periodically with increasing the pump power. The highly chirped pulse has good potential for application to the chirped pulse amplification (CPA) system. &copy; 2011 Pleiades Publishing, Ltd.

Number of references:31

Main heading:Mode-locked fiber lasers

Controlled terms:Amplification - Bandpass filters - Dispersion (waves) - Fiber lasers - Pulse amplifiers - Ring lasers - Solitons

Uncontrolled terms:Chirped pulse amplification systems - Dissipative solitons - Fiber-ring lasers - Filtering effects - Highly chirped pulse - Intracavities - Long wavelength - Optical spectra - Output spectrum - Output wavelengths  - Polarization controllers - Pump power - Spectral filtering

Classification code:703.2 Electric Filters - 711.1 Electromagnetic Waves in Different Media - 713.1 Amplifiers - 741.1 Light/Optics - 744 Lasers - 931.3 Atomic and Molecular Physics

DOI:10.1134/S1054660X11090143

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 396>

 

Accession number:20141617592823

Title:Medical image segmentation using descriptive image features

Authors:Yang, Meijuan (1); Yuan, Yuan (1); Li, Xuelong (1); Yan, Pingkun (1)

Author affiliation:(1) Center for OPTical IMagery Analysis and Learning (OPTIMAL), State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Xi'an, Shaanxi, 710119, China

Source title:BMVC 2011 - Proceedings of the British Machine Vision Conference 2011

Abbreviated source title:BMVC - Proc. Br. Mach. Vis. Conf.

Monograph title:BMVC 2011 - Proceedings of the British Machine Vision Conference 2011

Issue date:2011

Publication year:2011

Language:English

Document type:Conference article (CA)

Conference name:2011 22nd British Machine Vision Conference, BMVC 2011

Conference date:August 29, 2011  -  September 2, 2011

Conference location:Dundee, United kingdom

Conference code:104327

Publisher:British Machine Vision Association, BMVA

Abstract:Segmentation of medical images is an important component for diagnosis and treatment of diseases using medical imaging technologies. However, automated accurate medical image segmentation is still a challenge due to the difficulties in finding a robust feature descriptor to describe the object boundaries in medical images. In this paper, a new normal vector feature profile (NVFP) is proposed to describe the local image information of a contour point by concatenating a series of local region descriptors along the normal direction at that point. To avoid trapping by false boundaries caused by non-boundary image features, a modified scale invariant feature transform (SIFT) descriptor is developed. The number and locations of sample points for building NVFP are determined for each contour point, which are constrained by the neighboring anatomical structures and the statistical consistency of the training features. NVFP is incorporated into a model based method for image segmentation. The performance of our proposed method was demonstrated by segmenting prostate MR images. The segmentation results indicated that our method can achieve better performance compared with other existing methods. &copy; 2011. The copyright of this document resides with its authors.

Number of references:10

Main heading:Computer vision

Controlled terms:Diagnosis - Image segmentation - Magnetic resonance imaging - Medical image processing

Uncontrolled terms:Anatomical structures - Feature descriptors - Medical imaging technology - Model-based method - Scale invariant feature transforms - Segmentation of medical images - Segmentation results - Statistical consistencies

Classification code:461.6 Medicine and Pharmacology - 723.2 Data Processing and Image Processing - 723.5 Computer Applications - 746 Imaging Techniques

DOI:10.5244/C.25.94

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 397>

 

Accession number:20113714325855

Title:Long focal length large-aperture switch-zoom system design

Authors:Wang, Yan-Bin (1); Duan, Jing (1); Jin, Hu-Min (1); Jiang, Kai (1); Zhang, Heng-Jin (1)

Author affiliation:(1) Photoelectric Measurement and Control Technology Research Department, Xi'an Institute of Optics and Precision Mechanics of CAS, Xi'an 710119, China

Corresponding author:Wang, Y.-B.(wangyanbinhit@163.com)

Source title:Proceedings of SPIE - The International Society for Optical Engineering

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:8194

Monograph title:International Symposium on Photoelectronic Detection and Imaging 2011: Advances in Imaging Detectors and Applications

Issue date:2011

Publication year:2011

Article number:81941O

Language:English

ISSN:0277786X

CODEN:PSISDG

ISBN-13:9780819488350

Document type:Conference article (CA)

Conference name:International Symposium on Photoelectronic Detection and Imaging 2011: Advances in Imaging Detectors and Applications

Conference date:May 24, 2011 - May 26, 2011

Conference location:Beijing, China

Conference code:86450

Sponsor:Chinese Society of Astronautics

Publisher:SPIE, P.O. Box 10, Bellingham, WA 98227-0010, United States

Abstract:Compared with continuous zoom system, switch-zoom system has many advantages, such as simple structure, perfect imaging quality and easy fixing. A set of long focal length large-aperture visible switch-zoom system is designed in this paper. The system is composed of two parts: the front R-C object lens and the back switch-zoom system. When the back system is reversed, 1500&sim;3000mm switch-zoom can be realized. In order to match the front R-C object lens' exit pupil with the back switch-zoom lens' entrance pupil, the front R-C object lens is controlled to be telecentric and the back switch-zoom system is telecentric at both image and object. The back switch-zoom system's object NA at short focal position is controlled to be equal to the front R-C object lens' image NA. Thus, the two parts can match with each other properly and the whole long focal length large-aperture visible switch-zoom system is designed. When the spatial frequency is 50lp/mm, the MTF of the R-C system and the back switch-zoom system are reaching to the diffraction limit to ensure the MTF of the whole system at both long focal position and short focal position. The RMS at each focal position is less than 10um. From the first surface to image plane, the overall length is 1100mm. The designed result shows that this zoom system has the advantages of simple structure, high image quality and easy fixing. &copy; 2011 SPIE.

Number of references:3

Main heading:Optical design

Controlled terms:Detectors - Focusing - Image quality - Systems analysis

Uncontrolled terms:Diffraction limits - Entrance pupil - Exit pupil - Focal lengths - Focal positions - High image quality - Image plane - Imaging quality - Large aperture - Simple structures  - Spatial frequency - Switch-zoom - Whole systems - Zoom systems

Classification code:741 Light, Optics and Optical Devices - 741.1 Light/Optics - 914 Safety Engineering - 961 Systems Science

DOI:10.1117/12.900258J

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 398>

 

Accession number:20114714532614

Title:Low-temperature brush-shaped large-volume plasma generated by direct current discharge at atmospheric pressure

Authors:Sun, Aimin (1); Tang, Jie (2); Cao, Wenqing (2); Zhao, Wei (2); Duan, Yixiang (1)

Author affiliation:(1) Research Center of Analytical Instrumentation, Sichuan University, Chengdu 610064, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710068, China

Corresponding author:Sun, A.

Source title:IEEE Transactions on Plasma Science

Abbreviated source title:IEEE Trans Plasma Sci

Volume:39

Issue:11 PART 1

Issue date:November 2011

Publication year:2011

Pages:2084-2085

Article number:5762384

Language:English

ISSN:00933813

CODEN:ITPSBD

Document type:Journal article (JA)

Publisher:Institute of Electrical and Electronics Engineers Inc., 445 Hoes Lane / P.O. Box 1331, Piscataway, NJ 08855-1331, United States

Abstract:Low-temperature plasma is generated by glow discharge with a high direct current power supply and argon gas. A brush-shaped plasma source with large volume is obtained with a width of 15 mm, a thickness of 1 mm, and a length of about 18 mm. The source design and mechanism of the plasma generation are presented and discussed. The large-volume plasma source provides advantages in surface treatment, such as high working efficiency, sufficient utilization of the plasma gas, and natural cooling down. The characteristics of large volume, high energy density, and low temperature allow this kind of plasma source to be more suitable to practical applications. &copy; 2006 IEEE.

Number of references:7

Main heading:Plasma diagnostics

Controlled terms:Argon - Atmospheric pressure - Atmospheric temperature - Brushes - Glow discharges - Plasma sources - Surface treatment

Uncontrolled terms:Argon gas - Direct current - Direct-current discharge - High direct-current - High energy densities - Low temperature plasmas - Low temperatures - Plasma gas - Plasma generation - Working efficiency

Classification code:931 Classical Physics; Quantum Theory; Relativity - 804 Chemical Products Generally - 802 Chemical Apparatus and Plants; Unit Operations; Unit Processes - 932.3 Plasma Physics - 701.1 Electricity: Basic Concepts and Phenomena - 539 Metals Corrosion and Protection; Metal Plating - 443.1 Atmospheric Properties - 605 Small Tools and Hardware

DOI:10.1109/TPS.2011.2132742

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 399>

 

Accession number:20112314028711

Title:Experimental investigation on vibration-reduced characteristics of non-obstructive particle damping for free beam structure

Authors:Wang, Wei (1); Li, Yuyan (2)

Author affiliation:(1) Space Optics Laboratory, Xi'an Institute of Optics and Precision Mechanics of CAS, Xi'an 10119, China; (2) Department of Mechanical and Electrical Engineering, Xi'an Technological University, Xi'an 710032, China

Corresponding author:Wang, W.(wangwei@opt.ac.cn)

Source title:Advanced Materials Research

Abbreviated source title:Adv. Mater. Res.

Volume:230-232

Monograph title:Frontiers of Manufacturing Science and Measuring Technology

Issue date:2011

Publication year:2011

Pages:867-871

Language:English

ISSN:10226680

ISBN-13:9783037851333

Document type:Conference article (CA)

Conference name:2011 International Conference on Frontiers of Manufacturing Science and Measuring Technology, ICFMM 2011

Conference date:June 23, 2011 - June 24, 2011

Conference location:Chongqing, China

Conference code:85006

Sponsor:Control Engineering and Information Science Research Association; Int. Front. Sci. Technol. Res. Assoc.; Trans Tech Publications; Chongqing Xueya Conferences Catering Co., Ltd

Publisher:Trans Tech Publications, P.O. Box 1254, Clausthal-Zellerfeld, D-38670, Germany

Abstract:Non-obstructive particle damping is a composite damping technology based on traditional particle damping and impact damping. Being Compared with viscous elastic damping structure, advantage of NOPD is damping characteristic of system improved greatly on the basis of specific whole designing structure and whole mass. The technology has good general vibration-reduced outcome. Beam structure is a common structural element form in engineering application. Because of vibration or instability of beam under external excitation, in this paper, free beam is regarded as an object, and many factors affecting damping characteristic of NOPD are studied, which supplies referring results for engineering application of NOPD. &copy; 2011 Trans Tech Publications, Switzerland.

Number of references:4

Main heading:Damping

Controlled terms:Composite structures - Manufacture - Prestressed beams and girders - Technology

Uncontrolled terms:Beam structures - Damping characteristics - Damping structure - Damping technology - Designing structures - Engineering applications - Experimental investigations - External excitation - Free beam - Impact damping  - Non-obstructive particle damping - Particle damping - Structural elements - Vibration-reduced

Classification code:408.2 Structural Members and Shapes - 537.1 Heat Treatment Processes - 901 Engineering Profession - 931.1 Mechanics

DOI:10.4028/www.scientific.net/AMR.230-232.867

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 400>

 

Accession number:20112414064869

Title:Orthogonal matching pursuit signal reconstruction based on improved genetic algorithm

Authors:Wang, Guo-Fu (1); Zhang, Hai-Ru (1); Zhang, Fa-Quan (1); Xu, Ting (1)

Author affiliation:(1) School of Information and Communication Engineering, Guilin University of Electronic Technology, Guilin 541004, China; (2) Xi'an Institute of Optics and Precision Mechanics of Chinese Academy of Sciences, Xi'an 710119, China

Corresponding author:Wang, G.-F.(gfwang@guet.edu.cn)

Source title:Xi Tong Gong Cheng Yu Dian Zi Ji Shu/Systems Engineering and Electronics

Abbreviated source title:Xi Tong Cheng Yu Dian Zi Ji Shu/Syst Eng Electron

Volume:33

Issue:5

Issue date:May 2011

Publication year:2011

Pages:974-977

Language:Chinese

ISSN:1001506X

CODEN:XGYDEM

Document type:Journal article (JA)

Publisher:Chinese Institute of Electronics, P.O. Box 165, Beijing, 100036, China

Abstract:The core problem of compressed sensing theory is how to find an efficient and fast reconstruction algorithm. The existing reconstruction algorithms (such as orthogonal matching pursuit) have some defects: slow reconstruction, the reconstruction algorithm is carried out under a given number of iteration conditions, and the adaptation is reduced by this compulsory stop. An improved genetic algorithm (IGA) combining with orthogonal matching pursuit (OMP) algorithm is carried out to construct the reconstruction matrix. First, an improved genetic algorithm is used to select the current maximum redundancy column vector from the measurement matrix columns with an optimal chromosome method. Then subtract the part of columns with optimal chromosome from the measurement matrix, and repeat iteration until it meets the reconstruction accuracy. Simulation results show that, compared with the existing reconstruction algorithms under the same conditions, time-consuming of the algorithm reduces 5 s and the size of the measurement matrix reduces about 10%. This method can stop iteration adaptively under the condition of reconstruction signal with unknown sparseness.

Number of references:16

Main heading:Genetic algorithms

Controlled terms:Chromosomes - Optimization - Signal reconstruction

Uncontrolled terms:Column vector - Compressed sensing - Core problems - Fast reconstruction algorithms - Improved genetic algorithms - Measurement matrix - Number of iterations - Orthogonal matching pursuit - Reconstruction accuracy - Reconstruction algorithm  - Reconstruction algorithms - Reconstruction matrix - Simulation result

Classification code:461.2 Biological Materials and Tissue Engineering - 716.1 Information Theory and Signal Processing - 723 Computer Software, Data Handling and Applications - 921 Mathematics - 921.5 Optimization Techniques

DOI:10.3969/j.issn.1001-506X.2011.05.02

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 401>

 

Accession number:20140717320841

Title:Enhanced low-index field confinement by radially stratified micro optical fibers

Authors:Zhang, Wenfu (1); Mu, Jian-Wei (3); Huang, Wei-Ping (3); Zhao, Wei (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (2) Graduate School of the Chinese Academy of Sciences, Beijing 100049, China; (3) Department of Electrical and Computer Engineering, McMaster University, Hamilton, ON L8S 4K1, Canada

Corresponding author:Zhang, W.(wfu.zhang@gmail.com)

Source title:Optics InfoBase Conference Papers

Abbreviated source title:Opt.InfoBase Conf. Papers

Monograph title:Access Networks and In-house Communications, ANIC 2011

Issue date:2011

Publication year:2011

Language:English

E-ISSN:21622701

ISBN-13:9781557529138

Document type:Conference article (CA)

Conference name:Access Networks and In-house Communications, ANIC 2011

Conference date:June 12, 2011  -  June 14, 2011

Conference location:Toronto, Canada

Conference code:102599

Publisher:Optical Society of America, 2010 Massachusetts Ave, NW, Washington, DC, DC 20036-1023, United States

Abstract:The ring micro-fiber is studied. The calculating results show that light can be concentrated in nanometer-thin low-index ring regions with very high confinement efficiency. &copy; 2011 OSA.

Number of references:4

Main heading:Optical fibers

Uncontrolled terms:High confinement - Micro-fiber

Classification code:741.1.2 Fiber Optics

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 402>

 

Accession number:20114114410429

Title:Segmenting images by combining selected atlases on manifold

Authors:Cao, Yihui (1); Yuan, Yuan (1); Li, Xuelong (1); Turkbey, Baris (2); Choyke, Peter L. (2); Yan, Pingkun (1)

Author affiliation:(1) Center for OPTical IMagery Analysis and Learning (OPTIMAL), State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Xi'an, Shaanxi 710119, China; (2) National Institutes of Health, National Cancer Institute, Molecular Imaging Program, Bethesda, MD 20892, United States

Corresponding author:Cao, Y.

Source title:Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)

Abbreviated source title:Lect. Notes Comput. Sci.

Volume:6893 LNCS

Issue:PART 3

Monograph title:Medical Image Computing and Computer-Assisted Intervention, MICCAI 2011 - 14th International Conference, Proceedings

Issue date:2011

Publication year:2011

Pages:272-279

Language:English

ISSN:03029743

E-ISSN:16113349

ISBN-13:9783642236259

Document type:Conference article (CA)

Conference name:14th International Conference on Medical Image Computing and Computer Assisted Intervention, MICCAI 2011

Conference date:September 18, 2011 - September 22, 2011

Conference location:Toronto, ON, Canada

Conference code:86806

Publisher:Springer Verlag, Tiergartenstrasse 17, Heidelberg, D-69121, Germany

Abstract:Atlas selection and combination are two critical factors affecting the performance of atlas-based segmentation methods. In the existing works, those tasks are completed in the original image space. However, the intrinsic similarity between the images may not be accurately reflected by the Euclidean distance in this high-dimensional space. Thus, the selected atlases may be away from the input image and the generated template by combining those atlases for segmentation can be misleading. In this paper, we propose to select and combine atlases by projecting the images onto a low-dimensional manifold. With this approach, atlases can be selected according to their intrinsic similarity to the patient image. A novel method is also proposed to compute the weights for more efficiently combining the selected atlases to achieve better segmentation performance. The experimental results demonstrated that our proposed method is robust and accurate, especially when the number of training samples becomes large. &copy; 2011 Springer-Verlag.

Number of references:9

Main heading:Image segmentation

Controlled terms:Medical computing - Medical imaging

Uncontrolled terms:Atlas-based segmentation - Critical factors - Euclidean distance - High dimensional spaces - Input image - Low-dimensional manifolds - Original images - Patient images - Segmentation performance - Training sample

Classification code:723.5 Computer Applications - 741 Light, Optics and Optical Devices - 741.1 Light/Optics - 746 Imaging Techniques

DOI:10.1007/978-3-642-23626-6_34

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 403>

 

Accession number:20114914584087

Title:Passive measurement technology used for upper atmosphere measurement

Authors:Zhang, Chunmin (1); Zhu, Huachun (1); Wang, Dingyi (1); Zhao, Baochang (4); Dai, Haishan (1); Zhang, Lin (1)

Author affiliation:(1) School of Science, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China; (2) Non-Equilibrium Condensed Matter and Quantum Engineering Laboratory, Key Laboratory of Ministry of Education, Xi'an, Shaanxi 710049, China; (3) Physical Department, University of New Brunswick, Fredericton, E3B5A3, Canada; (4) Space Optical Laboratory, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, Shaanxi 710068, China; (5) Physics Department, Free University of Berlin, Berlin 14195, Germany

Corresponding author:Zhang, C.(zcm@mail.xjtu.edu.cn)

Source title:Guangxue Xuebao/Acta Optica Sinica

Abbreviated source title:Guangxue Xuebao

Volume:31

Issue:9

Issue date:September 2011

Publication year:2011

Pages:0900136-1-0900136-11

Language:Chinese

ISSN:02532239

CODEN:GUXUDC

Document type:Journal article (JA)

Publisher:Chinese Optical Society, P.O. Box 80, Xi'an, 710068, China

Abstract:The history, status and the future of the passive measurement technology used for upper atmosphere measurement (UAM) are introduced. The principle and method for UAM are introduced. The emission source, four intensities method, and limb measurement model for UAM are presented. The design and manufacture of field-widened, achromatic, temperature compensation wind imaging interferometer (FATWindII) developed are described emphatically. The laboratory experimental system for simulation measurement of FATWindII is built up. Based on this experimental system, some simulation measurement results of velocity, temperature and pressure of upper atmosphere are presented in this paper. The research has scientific significance and practical value for physical geography, atmospheric science, environment protection, national defense and national economic construction.

Number of references:38

Main heading:Upper atmosphere

Controlled terms:Atmospheric optics - Interferometers - Measurements

Uncontrolled terms:Atmospheric science - Economic constructions - Emission sources - Environment protection - Experimental system - Limb measurements - Measurement results - National defense - Passive measurements - Temperature compensation  - Wind imaging interferometer

Classification code:443.1 Atmospheric Properties - 941 Acoustical and Optical Measuring Instruments - 941.3 Optical Instruments - 942 Electric and Electronic Measuring Instruments - 943 Mechanical and Miscellaneous Measuring Instruments - 944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments

DOI:10.3788/AOS201131.0900136

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 404>

 

Accession number:20113314243886

Title:Evolution of dissipative-soliton laser from molecule to multipulse

Authors:Liu, X.M. (1); Duan, L.N. (1); Mao, D. (1); Wang, L.R. (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Chinese Academy of Sciences, Xi'an Institute of Optics and Precision Mechanics, Xi'an 710119, China

Corresponding author:Liu, X.M.(liuxueming72@yahoo.com)

Source title:Laser Physics

Abbreviated source title:Laser Phys.

Volume:21

Issue:6

Issue date:June 2011

Publication year:2011

Pages:1085-1091

Language:English

ISSN:1054660X

E-ISSN:15556611

Document type:Journal article (JA)

Publisher:Maik Nauka-Interperiodica Publishing, Profsoyuznaya Ul 90, Moscow, 117997, Russia

Abstract:We report on the evolution of dissipative-soliton laser from single pulse to soliton molecule, lastly to multiple pulses. The experimental observations show that the pulse separation of soliton molecules is oscillating stochastically. It is found that the proposed fiber laser delivers pulses from a soliton to a soliton molecule, two solitons, a soliton molecule together with a soliton, and three solitons, respectively, when, the pump strength is enhanced gradually. &copy; Pleiades Publishing, Ltd. 2011.

Number of references:25

Main heading:Solitons

Controlled terms:Fiber lasers - Molecules - Optical pumping

Uncontrolled terms:Experimental observation - Multiple pulse - Multipulses - Pulse separations - Single pulse - Soliton molecules

Classification code:741.1 Light/Optics - 741.1.2 Fiber Optics - 931.3 Atomic and Molecular Physics

DOI:10.1134/S1054660X1111020X

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 405>

 

Accession number:20113714320170

Title:Probability of acquisition of three-dimensional imaging laser radar

Authors:Dong, Li-Jun (1); Zhu, Shao-Lan (1); Sun, Chuan-Dong (1); Gao, Cun-Xiao (1); Song, Zhi-Yuan (1)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (2) Gradute University Chinese Academy of Sciences, Beijing 10039, China

Corresponding author:Dong, L.-J.

Source title:Proceedings of SPIE - The International Society for Optical Engineering

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:8192

Monograph title:International Symposium on Photoelectronic Detection and Imaging 2011: Laser Sensing and Imaging; and Biological and Medical Applications of Photonics Sensing and Imaging

Issue date:2011

Publication year:2011

Article number:81924A

Language:English

ISSN:0277786X

CODEN:PSISDG

ISBN-13:9780819488336

Document type:Conference article (CA)

Conference name:International Symposium on Photoelectronic Detection and Imaging 2011: Laser Sensing and Imaging; and Biological and Medical Applications of Photonics Sensing and Imaging

Conference date:May 24, 2011 - May 26, 2011

Conference location:Beijing, China

Conference code:86437

Sponsor:Chinese Society of Astronautics

Publisher:SPIE, P.O. Box 10, Bellingham, WA 98227-0010, United States

Abstract:Three-dimensional imaging laser radar (3-D ladar) is widely used in area of modern military, scientific research, agriculture and industry. Because of its many features such as angle-angle-range capturing, high resolution, anti-jamming ability and no multipath effect ,but it has to scan for target searching, acquiring and tracking. This paper presents a novel probability model of target acquiring which provides a theoretical basis for optimizing the scanning mechanism. The model combines space and time, target moving velocity and ladar scanning velocity together. Then the optimum scanning mechanism to obtain the maximum probability of acquisition and associated with different targets can be gained. The result shows that this model provides a method to optimize parameter for designing of the scanner. &copy; 2011 SPIE.

Number of references:8

Main heading:Three dimensional

Controlled terms:Imaging systems - Medical applications - Mergers and acquisitions - Optical radar - Optimization - Probability - Radar imaging - Scanning

Uncontrolled terms:Anti-jamming ability - High resolution - Maximum probability - Moving velocity - Multi-path effect - Probability models - Scanning mechanisms - Scanning velocity - Scientific researches - Space and time  - Target searching - Theoretical basis - Three dimensional imaging

Classification code:922.1 Probability Theory - 921.5 Optimization Techniques - 912 Industrial Engineering and Management - 902.1 Engineering Graphics - 746 Imaging Techniques - 741.3 Optical Devices and Systems - 741 Light, Optics and Optical Devices - 716.2 Radar Systems and Equipment - 461.1 Biomedical Engineering

DOI:10.1117/12.901932

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 406>

 

Accession number:20122715188560

Title:Universal no reference image quality assessment metrics based on local dependency

Authors:Gao, Fei (1); Gao, Xinbo (1); Tao, Dacheng (2); Li, Xuelong (3); He, Lihuo (1); Lu, Wen (1)

Author affiliation:(1) School of Electronic Engineering, Xidian University, Xi'an 710071, China; (2) Faculty of Engineering and Information Technology, University of Technology, Sydney, Sydney, NSW, Australia; (3) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China

Corresponding author:Gao, F.(gaofeihifly@gmail.com)

Source title:1st Asian Conference on Pattern Recognition, ACPR 2011

Abbreviated source title:Asian Conf. Pattern Recogn., ACPR

Monograph title:1st Asian Conference on Pattern Recognition, ACPR 2011

Issue date:2011

Publication year:2011

Pages:298-302

Article number:6166657

Language:English

ISBN-13:9781457701221

Document type:Conference article (CA)

Conference name:1st Asian Conference on Pattern Recognition, ACPR 2011

Conference date:November 28, 2011 - November 28, 2011

Conference location:Beijing, China

Conference code:90727

Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States

Abstract:No reference image quality assessment (NR-IQA) is to evaluate image quality blindly without the ground truth. Most of the emerging NR-IQA algorithms are only effective for some specific distortion. Universal metrics that can work for various categories of distortions have hardly been explored, and the algorithms available are not fully adequate in performance. In this paper, we study the local dependency (LD) characteristic of natural images, and propose two universal NR-IQA metrics: LD global scheme (LD-GS) and LD two-step scheme (LD-TS). We claim that the local dependency characteristic among wavelet coefficients is disturbed by various distortion processes, and the disturbances are strongly correlated to image qualities. Experimental results on LIVE database II demonstrate that both the proposed metrics are highly consistent with the human perception and outpace the state-of-the-art NR-IQA indexes and some full reference quality indicators for diverse distortions and across the entire database. &copy; 2011 IEEE.

Number of references:26

Main heading:Image quality

Controlled terms:Algorithms - Pattern recognition - Support vector machines

Uncontrolled terms:global scheme - Ground truth - Human perception - Image quality evaluation - Natural images - No-reference image quality assessments - Quality indicators - two-step scheme - Wavelet coefficients

Classification code:716 Telecommunication; Radar, Radio and Television - 723 Computer Software, Data Handling and Applications - 741 Light, Optics and Optical Devices

DOI:10.1109/ACPR.2011.6166657

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 407>

 

Accession number:20114414464506

Title:A novel de-noising method based on Independent Component Analysis(ICA) for DMD based Hadamard Transform Spectral Imager

Authors:Qian, QingMing (1); Hu, BingLiang (1); Xu, Jun (1); Liu, CaiFang (1); Tan, XiaoBing (1)

Author affiliation:(1) Laboratory of Spectral Imaging Technique, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, Shaanxi, 710119, China; (2) Graduate School, Chinese Academy of Science, France

Corresponding author:Qian, Q.(qianqingming@163.com)

Source title:Proceedings of 2011 Cross Strait Quad-Regional Radio Science and Wireless Technology Conference, CSQRWC 2011

Abbreviated source title:Proc. Cross Strait Quad-Reg. Radio Sci. Wirel. Technol. Conf., CSQRWC

Volume:2

Monograph title:Proceedings of 2011 Cross Strait Quad-Regional Radio Science and Wireless Technology Conference, CSQRWC 2011

Issue date:2011

Publication year:2011

Pages:1437-1441

Article number:6037236

Language:English

ISBN-13:9781424497904

Document type:Conference article (CA)

Conference name:2011 Cross Strait Quad-Regional Radio Science and Wireless Technology Conference, CSQRWC 2011

Conference date:July 27, 2011 - July 30, 2011

Conference location:Harbin, China

Conference code:87055

Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States

Abstract:A new de-noising method based on Independent Component Analysis (ICA) is proposed for imaging characteristics of Digital Micro-mirror Device (DMD) based Hadamard Transform Spectral Imager. As the ubiquitous Gaussian white noises caused by diffractions and other unknown factors in the optical instrument severely confine the usage of the spectral image. ICA is a powerful technique in recovering latent independent sources given only from the mixtures. Based on the fundamental analyzing mode of ICA, the projection of the spectral image is calculated under the transform bases. Then the de-noising processing is carried out by using the soft threshold arithmetic operators. The rebuild spectral image can be acquired by an inverse transform at last. Experiments demonstrate that the proposed ICA algorithm achieves a higher peak signal noise ration (PSNR) and subjective vision effects compared with traditional spectral image de-noising methods. &copy; 2011 IEEE.

Number of references:10

Main heading:Independent component analysis

Controlled terms:Digital radio - Mathematical operators - Mathematical transformations - White noise - Wireless telecommunication systems

Uncontrolled terms:De-noising - Denoising methods - Digital micro-mirror device - DMD - Gaussian white noise - Hadamard transforms - ICA algorithms - Imaging characteristics - Inverse transforms - PSNR  - Signal noise - Soft threshold - Spectral images

Classification code:921.3 Mathematical Transformations - 921 Mathematics - 723.4 Artificial Intelligence - 717 Optical Communication - 716.3 Radio Systems and Equipment - 716 Telecommunication; Radar, Radio and Television - 711 Electromagnetic Waves

DOI:10.1109/CSQRWC.2011.6037236

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 408>

 

Accession number:20113214221937

Title:Effect of platform attitude stability on image quality of spatially modulated imaging fourier transform spectrometer

Authors:Jing, Juanjuan (1); Wei, Ruyi (1); Yuan, Yan (3)

Author affiliation:(1) Key Laboratory of Spectral Imaging Technique, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, China; (2) Graduate School of Chinese Academy of Sciences, Beijing, China; (3) School of Instrumentation Science and Opto-Electronics Engineering, Beijing University of Aeronautics and Astronautics, Beijing, China

Corresponding author:Jing, J.(jingjuanjuan@opt.ac.cn)

Source title:Proceedings - 3rd International Symposium on Information Science and Engineering, ISISE 2010

Abbreviated source title:Proc. - Int. Symp. Inf. Sci. Eng., ISISE

Monograph title:Proceedings - 3rd International Symposium on Information Science and Engineering, ISISE 2010

Issue date:2011

Publication year:2011

Pages:153-156

Article number:5945074

Language:English

ISBN-13:9780769543604

Document type:Conference article (CA)

Conference name:3rd International Symposium on Information Science and Engineering, ISISE 2010

Conference date:December 14, 2010 - December 26, 2010

Conference location:Shanghai, China

Conference code:85924

Sponsor:Shanghai Institute of Electronics; Shanghai Jiaotong University; Fudan University; Peoples' Friendship University of Russia; Feng Chia University

Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States

Abstract:The data acquired by the spatially modulated imaging Fourier Transform spectrometer(SMIFTS) contain one dimensional spatial information, one dimensional interference information, and one dimensional push broom scanning spatial information. This kind of spectrometer theoretically requires that flying platform keeps uniform moving velocity and steady attitude in the imaging mode, as well as the imaging motion in each two neighboring interferograms is one array of pixels. The unsteadiness of platform would not only cause problems such as distortion, mixed pixels and lower signal-noise ratio on acquired spatial images, but also produce deviation and decadence of interferograms away from ideal ones, bringing the distortion of real spectra. The abnormal image motion model between satellite attitude and the data acquired by SMIFTS is built based on the theory that projection center of a sensor, an image point and an object on the ground are in the same line. This paper calculates the image motions between different frames, assuming that the pitch angle and yaw angle are same, And moreover, analyzes the effect of the attitude steadiness on the data quality of SMIFTS. The results show that, pitch angle bringing distortion of neighboring interferograms in along-orbit directions has most serious effect, the image gradient decrease obviouly and the discrepancy between interferogram and spectra is bigger, yaw angle bringing the relative rotation of neighboring interferograms has the less serious effect on images and spectra. To get the real spectra of the object, we should take some measures to correct it. &copy; 2010 IEEE.

Number of references:13

Main heading:Fourier transforms

Controlled terms:Bolometers - Image quality - Information science - Interferometry - Metadata - Pixels - Spacecraft instruments - Spectrometers - Spectrometry

Uncontrolled terms:Attitude stability - Collinearity equations - Data quality - Flying platforms - Image gradients - Image motion - Image points - Imaging modes - Interferograms - Mixed pixel  - Modulated imaging - Moving velocity - Pitch angle - Relative rotation - Satellite attitude - Signal-noise ratio - SMIFTS - Spatial images - Spatial informations - Yaw angles

Classification code:944.7 Radiation Measuring Instruments - 941.4 Optical Variables Measurements - 921.3 Mathematical Transformations - 903 Information Science - 801 Chemistry - 741 Light, Optics and Optical Devices - 723.5 Computer Applications - 723 Computer Software, Data Handling and Applications - 655.1 Spacecraft, General

DOI:10.1109/ISISE.2010.52

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 409>

 

Accession number:20114914584138

Title:Thermal reaction of high power semiconductor laser with voids in solder layer

Authors:Ding, Xiaochen (1); Zhang, Pu (2); Xiong, Lingling (2); Ou, Xiang (1); Li, Xiaoning (2); Xu, Zhongfeng (1); Wang, Jingwei (3); Liu, Xingsheng (2)

Author affiliation:(1) Department of Applied Physics, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, Shaanxi 710119, China; (3) Xi'an Focuslight Optoelectronics Technology Co., Ltd., Xi'an, Shaanxi 710119, China

Corresponding author:Xu, Z.(zhfxu@mail.xjtu.edu.cn)

Source title:Zhongguo Jiguang/Chinese Journal of Lasers

Abbreviated source title:Zhongguo Jiguang

Volume:38

Issue:9

Issue date:September 2011

Publication year:2011

Article number:0902006

Language:Chinese

ISSN:02587025

CODEN:ZHJIDO

Document type:Journal article (JA)

Publisher:Science Press, 18,Shuangqing Street,Haidian, Beijing, 100085, China

Abstract:With the improvement of power, efficiency, reliability, manufacturability, and cost of high power semiconductor laser, many new applications are being enabled. Most of the semiconductor laser bars are packaged with the indium solder. However, some small voids are created during the packaging process, which will be gradually enlarged by the electromigration and electrothermal migration of the indium solder. Voids may cause local overheating near the facets of the laser. Therefore it is necessary to study the thermal behavior of semiconductor laser bars with voids in the solder layer. The thermal behavior of a single-bar CS-packaged 40 W 808 nm semiconductor laser with voids in the solder layer is studied and the relationship between temperature and voids size is analysed. The distribution of voids is predicted according to the space spectrum of a 40 W 808 nm semiconductor laser bar and the simulation results. It is found that the simulation results agree well with the measurement of the scanning acoustic microscope (SAM) image of solder layer.

Number of references:10

Main heading:Semiconductor lasers

Controlled terms:Acoustic microscopes - Behavioral research - Chip scale packages - High power lasers - Indium - Lasers - Power electronics - Semiconducting indium

Uncontrolled terms:High power semiconductor laser - Indium solders - Laser bar/array - Manufacturability - New applications - Packaging process - Scanning acoustic microscopes - Solder layers - Space spectrum - Thermal behaviors  - Thermal reactions

Classification code:971 Social Sciences - 941.1 Acoustical Instruments - 744.1 Lasers, General - 715.2 Industrial Electronic Equipment - 714.2 Semiconductor Devices and Integrated Circuits - 712.1.1 Single Element Semiconducting Materials - 549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals

DOI:10.3788/CJL201138.0902006

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 410>

 

Accession number:20113214224371

Title:Optimal design of temporal resolution of soft X-ray picosecond framing cameras based on micro-channel plate

Authors:Yang, Wenzheng (1); Bai, Yonglin (1); Bai, Xiaohong (1); Qin, Junjun (1); Liu, Baiyu (2); Wang, Bo (1)

Author affiliation:(1) Key Laboratory of Ultra-Fast Photoelectric Diagnostics Technology, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China

Corresponding author:Yang, W.(ywz@opt.ac.cn)

Source title:Chinese Optics Letters

Abbreviated source title:Chin. Opt. Lett.

Volume:9

Issue:SUPPL. 1

Issue date:June 2011

Publication year:2011

Pages:S10301

Language:English

ISSN:16717694

Document type:Journal article (JA)

Publisher:Science Press, 18,Shuangqing Street,Haidian, Beijing, 100085, China

Abstract:The transit characteristics of gain electrons in the dynamic electric field in one micro-channel, the relation of the temporal resolution, and the gating electric pulse are discussed in detail. The simulation analyses provide guidance on how to select parameters of the gating electric pulse for designing the X-ray picosecond framing camera, based on micro-channel plates, especially with regard to the aspect of the temporal resolution of the camera. Certain experimental results are presented. &copy; 2011 Chinese Optics Letters.

Number of references:8

Main heading:Cameras

Controlled terms:Electric fields - Image storage tubes

Uncontrolled terms:Dynamic electric fields - Electric pulse - Framing Camera - Micro channel plate - Optimal design - Picoseconds - Simulation analysis - Soft X-ray - Temporal resolution - Transit characteristics

Classification code:701.1 Electricity: Basic Concepts and Phenomena - 714.1 Electron Tubes - 742.2 Photographic Equipment

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 411>

 

Accession number:20110813678734

Title:Summarizing tourist destinations by mining user-generated travelogues and photos

Authors:Pang, Yanwei (1); Hao, Qiang (1); Yuan, Yuan (2); Hu, Tanji (1); Cai, Rui (3); Zhang, Lei (3)

Author affiliation:(1) School of Electronic Information Engineering, Tianjin University, Tianjin 300072, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xian 710119, Shaanxi, China; (3) Microsoft Research Asia, Beijing 100190, China

Corresponding author:Yuan, Y.(yuany@opt.ac.cn)

Source title:Computer Vision and Image Understanding

Abbreviated source title:Comput Vision Image Understanding

Volume:115

Issue:3

Issue date:March 2011

Publication year:2011

Pages:352-363

Language:English

ISSN:10773142

E-ISSN:1090235X

CODEN:CVIUF4

Document type:Journal article (JA)

Publisher:Academic Press Inc., 6277 Sea Harbor Drive, Orlando, FL 32887-4900, United States

Abstract:Automatically summarizing tourist destinations with both textual and visual descriptions is highly desired for online services such as travel planning, to facilitate users to understand the local characteristics of tourist destinations. Travelers are contributing a great deal of user-generated travelogues and photos on the Web, which contain abundant travel-related information and cover various aspects (e.g., landmarks, styles, activities) of most locations in the world. To leverage the collective knowledge of travelers for destination summarization, in this paper we propose a framework which discovers location-representative tags from travelogues and then select relevant and representative photos to visualize these tags. The learnt tags and selected photos are finally organized appropriately to provide an informative summary which describes a given destination both textually and visually. Experimental results based on a large collection of travelogues and photos show promising results on destination summarization. &copy; 2010 Elsevier Inc. All rights reserved.

Number of references:42

Main heading:Knowledge management

Uncontrolled terms:Destination summarization - Local characteristics - On-line service - Tourist destinations - Travel planning - Travelogue mining - User-generated content - Virtual tour

Classification code:723.5 Computer Applications

DOI:10.1016/j.cviu.2010.10.010

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 412>

 

Accession number:20113814351126

Title:Zernike-moment-based image super resolution

Authors:Gao, Xinbo (1); Wang, Qian (1); Li, Xuelong (2); Tao, Dacheng (3); Zhang, Kaibing (1)

Author affiliation:(1) School of Electronic Engineering, Xidian University, Xi'an 710071, China; (2) Center for OPTical IMagery Analysis and Learning (OPTIMAL), State Key Laboratory of Transient Optics and Photonics, Chinese Academy of Sciences, Xi'an 710119, China; (3) Centre for Quantum Computation and Intelligent Systems, Faculty of Engineering and Information Technology, University of Technology, Sydney, NSW 2007, Australia

Corresponding author:Gao, X.(xbgao@mail.xidian)

Source title:IEEE Transactions on Image Processing

Abbreviated source title:IEEE Trans Image Process

Volume:20

Issue:10

Issue date:October 2011

Publication year:2011

Pages:2738-2747

Article number:5740602

Language:English

ISSN:10577149

CODEN:IIPRE4

Document type:Journal article (JA)

Publisher:Institute of Electrical and Electronics Engineers Inc., 445 Hoes Lane / P.O. Box 1331, Piscataway, NJ 08855-1331, United States

Abstract:Multiframe super-resolution (SR) reconstruction aims to produce a high-resolution (HR) image using a set of low-resolution (LR) images. In the process of reconstruction, fuzzy registration usually plays a critical role. It mainly focuses on the correlation between pixels of the candidate and the reference images to reconstruct each pixel by averaging all its neighboring pixels. Therefore, the fuzzy-registration-based SR performs well and has been widely applied in practice. However, if some objects appear or disappear among LR images or different angle rotations exist among them, the correlation between corresponding pixels becomes weak. Thus, it will be difficult to use LR images effectively in the process of SR reconstruction. Moreover, if the LR images are noised, the reconstruction quality will be affected seriously. To address or at least reduce these problems, this paper presents a novel SR method based on the Zernike moment, to make the most of possible details in each LR image for high-quality SR reconstruction. Experimental results show that the proposed method outperforms existing methods in terms of robustness and visual effects. &copy; 2011 IEEE.

Number of references:30

Main heading:Feature extraction

Controlled terms:Image reconstruction - Motion estimation - Pixels

Uncontrolled terms:High quality - High resolution image - Image super resolutions - Low resolution images - Multi-frame - Reconstruction quality - Reference image - Superresolution - Visual effects - Zernike moments

Classification code:716 Telecommunication; Radar, Radio and Television - 716.1 Information Theory and Signal Processing - 723.5 Computer Applications - 741 Light, Optics and Optical Devices

DOI:10.1109/TIP.2011.2134859

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 413>

 

Accession number:20113714320159

Title:Realtime correction of probe pulse in subpicosecond time-resolved transient absorption spectroscopy

Authors:Zhang, Su-Juan (1); Duan, Cun-Li (2); Feng, Xiao-Qiang (1); He, Jun-Fang (3)

Author affiliation:(1) Institute of Photonics and Photo-Technology, Northwest University, Xi'an Shaanxi, 710069, China; (2) Optics Electricity College of Xi'an Industry University, Xi'an Shaanxi, 71003, China; (3) State Key Laboratory of Transient Op Tics and Technology, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710068, China

Corresponding author:Zhang, S.-J.(sujuan_zhang@yahoo.com.cn)

Source title:Proceedings of SPIE - The International Society for Optical Engineering

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:8192

Monograph title:International Symposium on Photoelectronic Detection and Imaging 2011: Laser Sensing and Imaging; and Biological and Medical Applications of Photonics Sensing and Imaging

Issue date:2011

Publication year:2011

Article number:81923P

Language:English

ISSN:0277786X

CODEN:PSISDG

ISBN-13:9780819488336

Document type:Conference article (CA)

Conference name:International Symposium on Photoelectronic Detection and Imaging 2011: Laser Sensing and Imaging; and Biological and Medical Applications of Photonics Sensing and Imaging

Conference date:May 24, 2011 - May 26, 2011

Conference location:Beijing, China

Conference code:86437

Sponsor:Chinese Society of Astronautics

Publisher:SPIE, P.O. Box 10, Bellingham, WA 98227-0010, United States

Abstract:Due to its breakthrough the electro-optical time response limitation for picosecond dynamics of processes, many research groups around the world operating in different fields from physics and chemistry to biology, medicine and material science, utilize laser setups capable of providing subpicosecond pulses and femtosecond-level time delay lines. However the signal amount of Femto-picosecond Dynamics is about at an altitude of 1%, but the fluctuation of femtosecond probe pulse at its best can only reach about 5%. Real-time correct the probe pulse is the only effective way to realize subpicosecond time-resolved detection precision of transient absorption spectroscopy. So in this paper, reference pulse was drawn into the measurement equipment through different methods to dispel the fluctuation of probe pulse. Firstly, in the case of Subpicosecond time-resolved transient absorption spectroscopy, probe and reference beams have the same spectral distribution and derived from the same source to measure the variation of transmittance in the excited volume. Secondly probe pulse is spatially and temporally overlapped to the excitation pulse, reference pulse spatially overlapped but temporally anticipated in respect to the excitation pulse. Finally reference pulse passes through the sample in a different position. The detector can be a CCD camera or a double photodiode. The results shown that when reference pulse passes through the sample in a different position and detected by CCD, the correction results can reach to 1%. Which meet the femto-picosecond dynamics precise requirement. &copy; 2011 SPIE.

Number of references:9

Main heading:Absorption spectroscopy

Controlled terms:Absorption - CCD cameras - Detectors - Functional groups - Group delay - Medical applications - Medical imaging - Probes

Uncontrolled terms:Probe pulse - Real-time corrections - Reference pulse - Subpicosecond - Time-resolved transient absorption spectroscopy

Classification code:943 Mechanical and Miscellaneous Measuring Instruments - 942 Electric and Electronic Measuring Instruments - 941 Acoustical and Optical Measuring Instruments - 931.2 Physical Properties of Gases, Liquids and Solids - 914 Safety Engineering - 944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments - 804.1 Organic Compounds - 741 Light, Optics and Optical Devices - 714.2 Semiconductor Devices and Integrated Circuits - 703.1 Electric Networks - 461.1 Biomedical Engineering - 801 Chemistry

DOI:10.1117/12.901003

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 414>

 

Accession number:20115214642378

Title:High-precision image motion measurement applied for space camera based on hybrid opto-digital joint transform correlator

Authors:Yi, Hongwei (1); Zhao, Hui (1); Li, Yingcai (1)

Author affiliation:(1) Space Optics Lab, Xi'an Institute of Optics and Precision Mechanics, No. 17 Xinxi Road, Xi'an, 710119, China; (2) State Key Laboratory of Transient Optics and Photonics, No. 17 Xinxi Road, Xi'an, 710119, China

Corresponding author:Zhao, H.(zhaohui@opt.ac.cn)

Source title:Proceedings of SPIE - The International Society for Optical Engineering

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:8006

Monograph title:MIPPR 2011: Remote Sensing Image Processing, Geographic Information Systems, and Other Applications

Issue date:2011

Publication year:2011

Article number:80061X

Language:English

ISSN:0277786X

CODEN:PSISDG

ISBN-13:9780819485809

Document type:Conference article (CA)

Conference name:MIPPR 2011: Remote Sensing Image Processing, Geographic Information Systems, and Other Applications

Conference date:November 4, 2011 - November 6, 2011

Conference location:Guilin, China

Conference code:87860

Sponsor:Natl. Key Lab. Sci. Technol. Multi-spectral Inf. Process.; Huazhong University of Science and Technology; Guilin University of Electronic Technology

Publisher:SPIE, P.O. Box 10, Bellingham, WA 98227-0010, United States

Abstract:Hybrid opto-digital joint transform correlator (HODJTC) is effective for image motion measurement, but it is different from the traditional joint transform correlator (JTC) because it only has one process of optical Fourier transform and the intermediate joint power spectrum (JPS) is directly input to a digital unit to compute the image motion. In original HODJTC, the correlation image is obtained by using a global discrete Fourier transform operator. In fact, the location of cross-correlation peak corresponding to zero image motion is known and the maximum image shift can also be estimated. Thus, the local cross-correlation image can be directly obtained by adopting a local Fourier transform operator instead. With the pixel-level location of cross-correlation peak is obtained, the up-sampling technique is introduced to relocate the peak in even higher accuracy. Both the experiments and simulations demonstrate that the RMS (root-mean-square) error of motion determination can be controlled below 0.05 pixels, which is a very promising result for real application. &copy; 2011 SPIE.

Number of references:13

Main heading:Space optics

Controlled terms:Discrete Fourier transforms - Fourier transforms - Geographic information systems - Image reconstruction - Information systems - Measurements - Optical data processing - Pixels - Remote sensing

Uncontrolled terms:Correlation images - Cross correlations - High-precision - Image motion - Image shifts - Joint power spectrum - Joint transform correlators - Optical Fourier transforms - Real applications - Root mean squares  - Space cameras - Traditional joints - Up-sampling technique

Classification code:943 Mechanical and Miscellaneous Measuring Instruments - 942 Electric and Electronic Measuring Instruments - 941 Acoustical and Optical Measuring Instruments - 921.3 Mathematical Transformations - 944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments - 903.2 Information Dissemination - 731.1 Control Systems - 723.5 Computer Applications - 723.3 Database Systems - 741 Light, Optics and Optical Devices

DOI:10.1117/12.900508

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 415>

 

Accession number:20111513904800

Title:Investigation of energy transfer and upconversion luminescence in Er³⁺/Ho³⁺-codoped GeS<inf>2</inf>-In<inf>2</inf>S<inf>3</inf>-CsI glasses

Authors:Deng, Sheng-Wei (1); Xu, Tie-Feng (1); Dai, Shi-Xun (1); Wang, Xun-Si (1); Nie, Qiu-Hua (1); Shen, Xiang (1); Zhang, Xiang-Hua (1)

Author affiliation:(1) College of Information Science and Engineering, Ningbo University, Ningbo 315211, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Acad. of Sci., Xi'an 710119, China; (3) Laboratoire de Verres et Ceramiques, Universite de Rennes 1, Rennes 35042, France

Corresponding author:Deng, S.-W.

Source title:Gongneng Cailiao/Journal of Functional Materials

Abbreviated source title:Gongneng Cailiao

Volume:42

Issue:2

Issue date:February 2011

Publication year:2011

Pages:279-282

Language:Chinese

ISSN:10019731

CODEN:GOCAEA

Document type:Journal article (JA)

Publisher:Journal of Functional Materials, P.O. Box 1512, Chongqing, 630700, China

Abstract:A serials of chalcohalide glasses based on the composition 80GeS<inf>2</inf>-10In<inf>2</inf>S<inf>3</inf>-10CsI doped with the different Er³⁺/Ho³⁺ ions ratio were synthesized by melt-quenching technique. The state stability, Raman spectra, absorption spectra, upconversion emission spectra of glass samples were measured. Three intense upconversion luminescence emissions are observed at around 526, 549, and 660 nm, which correspond to Er³⁺:²H<inf>11/2</inf> &rarr⁴I<inf>15/2</inf>, Er³⁺:⁴S<inf>3/2</inf> &rarr⁴I<inf>15/2</inf> +Ho³⁺:⁵S<inf>2</inf> (⁵F<inf>4</inf>)&rarr⁵I<inf>8</inf>, and Er³⁺:⁴F<inf>9/2</inf> &rarr⁴I<inf>15/2</inf> + Ho³⁺:⁵F<inf>5</inf> &rarr⁵I<inf>8</inf> transitions, respectively. In 0.6mol% Er<inf>2</inf>S<inf>3</inf>/xHo<inf>2</inf>S<inf>3</inf> codoped glasses, increase of Ho<inf>2</inf>S<inf>3</inf> had positive effect up to the upconversion fluorescences. The upconversion emissions reach the maximum values when Ho<inf>2</inf>S<inf>3</inf> is 0.6 mol%, and the intensities of the green and red light emissions were 4.2 and 10 times stronger than those un-doped Ho<inf>2</inf>S<inf>3</inf>, respectively. The possibie upconversion mechanisms and energy transfer between Er³⁺ and Ho³⁺ were also estimated and evaluated. All the three emissions are based on two photon absorption processes.

Number of references:17

Main heading:Holmium

Controlled terms:Absorption - Doping (additives) - Emission spectroscopy - Energy transfer - Erbium - Glass - Luminescence - Raman spectroscopy - Two photon processes

Uncontrolled terms:Chalcohalide glass - Co-doped - Co-doped glass - Glass samples - Maximum values - Melt quenching techniques - Positive effects - Raman spectra - Red-light emission - State stability  - Two photon absorption - Up-conversion - Up-conversion emission - Up-conversion luminescence - Upconversion fluorescence - Upconversion mechanisms

Classification code:547.2 Rare Earth Metals - 641.2 Heat Transfer - 741.1 Light/Optics - 801 Chemistry - 812.3 Glass - 931.2 Physical Properties of Gases, Liquids and Solids

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 416>

 

Accession number:20120314700443

Title:Dispersion-insensitive low-coherent pulses emerging from nonlinear polarization switching

Authors:Mao, D. (1); Liu, X.M. (1); Lu, H. (1); Wang, L.R. (1); Duan, L.N. (1)

Author affiliation:(1) Slate Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China

Corresponding author:Liu, X.M.(liuxueming72@yahoo.com)

Source title:Laser Physics

Abbreviated source title:Laser Phys.

Volume:21

Issue:11

Issue date:November 2011

Publication year:2011

Pages:1903-1908

Language:English

ISSN:1054660X

E-ISSN:15556611

Document type:Journal article (JA)

Publisher:Maik Nauka-Interperiodica Publishing, Profsoyuznaya Ul 90, Moscow, 117997, Russia

Abstract:We have experimentally investigated low-repetition nanosecond pulses delivered from an erbiumdoped fiber (EDF) laser operating in ultra-large anomalous dispersion regime. The output pulses with rectangular profile and Gaussian spectrum almost keep invariable when they propagate through either normal-or anomalous-dispersion fibers. After nanosecond pulses are amplified via a two-stage EDF amplifier, they are broken up and exhibited as flatly broadened supercontinuum from 1520 to 1700 nm if amplified pulses are launched into a 10-km single-mode fiber, whereas the pulses retain the same duration with a broadband supercontinuum from 1200 to 1750 nm if they are input into a 100-m highly-nonlinear low-dispersion photonic-crystal fiber (PCF). The experimental observations demonstrate that the nanosecond pulses result from nonlinear polarization switching and can be regarded as dispersion-insensitive low-coherent pulses rather than compressible pulses. &copy; Pleiades Publishing, Ltd., 2011.

Number of references:46

Main heading:Dispersions

Controlled terms:Broadband amplifiers - Fibers - Optical switches - Photonic crystal fibers - Polarization - Single mode fibers

Uncontrolled terms:Amplified pulse - Anomalous dispersion - Erbium doped fiber laser - Experimental observation - Gaussian spectra - Nanosecond pulse - Nonlinear polarization switching - Output pulse - Supercontinuum - Two stage

Classification code:713.1 Amplifiers - 741 Light, Optics and Optical Devices - 812 Ceramics, Refractories and Glass - 817 Plastics and Other Polymers: Products and Applications - 951 Materials Science

DOI:10.1134/S1054660X11190236

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 417>

 

Accession number:20112414066675

Title:Experimental investigation of high-energy wave-breaking-free-pulse generation in bidirectional-pumping all-fiber laser

Authors:Liu, Xueming (1); Mao, Dong (1); Wang, Leiran (1); Duan, Lina (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China

Corresponding author:Liu, X.(liuxueming72@yahoo.com)

Source title:Applied Optics

Abbreviated source title:Appl. Opt.

Volume:50

Issue:10

Issue date:April 1, 2011

Publication year:2011

Pages:1465-1468

Language:English

ISSN:1559128X

E-ISSN:15394522

CODEN:APOPAI

Document type:Journal article (JA)

Publisher:Optical Society of America, 2010 Massachusetts Ave, NW, Washington, DC, DC 20036-1023, United States

Abstract:We report a passively mode-locked all-fiber laser with bidirectional pumping, emitting high-energy wavebreaking- free pulses. Experimental investigations show that forward and backward pump powers mainly contribute on the chirp and the nonlinear phase shift of pulses, respectively. Nonlinear chirp pulses with 50 nJ pulse energy, 340 ps duration at a 8:2MHz repetition rate are directly emitted from the all-fiber laser pumped by two 550mW, 977nm laser diodes. The pulses cannot be compressed to near the transform limit, showing that the chirp of pulses is nonlinear. &copy; 2011 Optical Society of America.

Number of references:20

Main heading:Mode-locked fiber lasers

Controlled terms:Fiber lasers - High energy physics - Optical pumping - Phase shift - Pulse generators - Pulse repetition rate - Pumps

Uncontrolled terms:All-fiber lasers - Backward pumps - Bidirectional pumping - Experimental investigations - High energy - Nonlinear chirp - Nonlinear phase shift - Passively mode-locked - Pulse energies - Repetition rate  - Wavebreaking

Classification code:932.1 High Energy Physics - 744.4 Solid State Lasers - 744.1 Lasers, General - 942.2 Electric Variables Measurements - 741.1.2 Fiber Optics - 713.4 Pulse Circuits - 618.2 Pumps - 741.1 Light/Optics

DOI:10.1364/AO.50.001465

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 418>

 

Accession number:20115214631596

Title:The research of attack angle measurement of projectile with CCD vertical target system

Authors:Xu, Wei (1); Wang, Miao (2)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Science, Xi'an, 710119, China; (2) Graduate University of Chinese Academy of Science, Beijing, 100039, China

Corresponding author:Xu, W.(s09034@opt.cn)

Source title:Procedia Engineering

Abbreviated source title:Procedia Eng.

Volume:15

Monograph title:2011 International Conference on Advanced in Control Engineering and Information Science, CEIS 2011

Issue date:2011

Publication year:2011

Pages:4733-4739

Language:English

ISSN:18777058

Document type:Conference article (CA)

Conference name:2011 International Conference on Advanced in Control Engineering and Information Science, CEIS 2011

Conference date:August 18, 2011 - August 19, 2011

Conference location:Dali, Yunnam, China

Conference code:87786

Publisher:Elsevier Ltd, Langford Lane, Kidlington, Oxford, OX5 1GB, United Kingdom

Abstract:Based on the coordinate measurement principle of the CCD vertical target system, a new method is proposed to measure the attack angle of flying projectile. It mainly analyze the coordinate measurement accuracy of the system and derive the formula for measuring the attack angle; In practical test, the attack angle measurement accuracy was proved to meet the request. The experimental results show that the method is feasible, and the CCD vertical target system not only measure the coordinates of flying projectile but also obtain the attack angle simultaneously, so that expand a wider range of applications of CCD vertical target measurement system. &copy; 2011 Published by Elsevier Ltd.

Number of references:3

Main heading:Projectiles

Controlled terms:Angle measurement - Coordinate measuring machines - Information science

Uncontrolled terms:Analysis of accuracy - Attack angle - Coordinate measurements - Measurement accuracy - Practical tests - Vertical targets

Classification code:654 Rockets and Rocket Propulsion - 903 Information Science - 943.2 Mechanical Variables Measurements - 943.3 Special Purpose Instruments

DOI:10.1016/j.proeng.2011.08.886

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 419>

 

Accession number:20112714124022

Title:Optical design of aerial digital camera based on large planar array CCD

Authors:Yan, Aqi (1); Yang, Jianfeng (1); Cao, Jianzhong (1)

Author affiliation:(1) Xi'an Institute Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, Shaanxi 710119, China; (2) Graduate University of Chinese Academy of Sciences, Beijing 100049, China

Corresponding author:Yan, A.(yanaqi@opt.ac.cn)

Source title:Guangxue Xuebao/Acta Optica Sinica

Abbreviated source title:Guangxue Xuebao

Volume:31

Issue:6

Issue date:June 2011

Publication year:2011

Article number:0622003

Language:Chinese

ISSN:02532239

CODEN:GUXUDC

Document type:Journal article (JA)

Publisher:Chinese Optical Society, P.O. Box 80, Xi'an, 710068, China

Abstract:Optical system of an aerial digital camera based on large planar array CCD with 50 million pixels is designed, considering aerospace environment and imaging quality. The focal length of aerial digital camera is 75 mm, F number is 4, and distortion is less than 0.1%. The required working temperature is between -40&deg;C~60&deg;C. After carefully research on the influence of temperature on imaging quality of optical system, a new approach is put forward. Aerial digital camera can reach excellent imaging quality when soaking in a large temperature change by this new technique. This approach can not only eliminate defocusing effect of optical system caused by temperature change, but also make the aerial digital camera be smaller and less weighty.

Number of references:10

Main heading:Digital cameras

Controlled terms:Optical design - Optical systems - Video cameras

Uncontrolled terms:Aerial digital camera - Athermalization - Defocus - Defocusing - F number - Focal lengths - Imaging quality - Planar arrays - Temperature changes - Working temperatures

Classification code:741.1 Light/Optics - 741.3 Optical Devices and Systems - 742.2 Photographic Equipment

DOI:10.3788/AOS201131.0622003

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 420>

 

Accession number:20114914573651

Title:Putting poses on manifold for action recognition

Authors:Cao, Xianbin (1); Ning, Bo (1); Yan, Pingkun (3); Li, Xuelong (3)

Author affiliation:(1) Department of Computer Science and Technology, University of Science and Technology of China, Hefei, 230026, China; (2) BeiHang University, Beijing, 100083, China; (3) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, Shaanxi, China

Corresponding author:Cao, X.

Source title:IEEE International Workshop on Machine Learning for Signal Processing

Abbreviated source title:IEEE Int. Workshop  Mach. Learn. Signal Proces.

Monograph title:2011 IEEE International Workshop on Machine Learning for Signal Processing - Proceedings of MLSP 2011

Issue date:2011

Publication year:2011

Article number:6064580

Language:English

ISBN-13:9781457716232

Document type:Conference article (CA)

Conference name:21st IEEE International Workshop on Machine Learning for Signal Processing, MLSP 2011

Conference date:September 18, 2011 - September 21, 2011

Conference location:Beijing, China

Conference code:87499

Sponsor:IEEE; IEEE Signal Processing Society

Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States

Abstract:In action recognition, bag of words based approaches have been shown to be successful, for which the quality of codebook is critical. This paper proposes a novel approach to select key poses for the codebook, which models the descriptor space utilizing manifold learning to recover the geometric structure of the descriptors on a lower dimensional manifold space. A PageRank based centrality measure is developed to select key poses on the manifold. In each step, a key pose is selected and the remaining model is modified to maximize the discriminative power of selected codebook. In classification, the ambiguity of each action couple is evaluated through cross validation. An additional subdivision will be executed for ambiguous pairs. Experiments on ut-tower dataset showed that our method is able to obtain better performance than the state-of-the-art methods. &copy; 2011 IEEE.

Number of references:15

Main heading:Learning systems

Controlled terms:Signal processing

Uncontrolled terms:Action recognition - Bag of words - Centrality measures - Key pose - Manifold Leaning

Classification code:716.1 Information Theory and Signal Processing - 731.5 Robotics

DOI:10.1109/MLSP.2011.6064580

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 421>

 

Accession number:20140717325460

Title:Enhanced low-index field confinement by radially stratified micro optical fibers

Authors:Zhang, Wenfu (1); Mu, Jian-Wei (3); Huang, Wei-Ping (3); Zhao, Wei (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (2) Graduate School of the Chinese Academy of Sciences, Beijing 100049, China; (3) Department of Electrical and Computer Engineering, McMaster University, Hamilton, ON L8S 4K1, Canada

Corresponding author:Zhang, W.(wfu.zhang@gmail.com)

Source title:Optics InfoBase Conference Papers

Abbreviated source title:Opt.InfoBase Conf. Papers

Monograph title:Integrated Photonics Research, Silicon and Nanophotonics, IPRSN 2011

Issue date:2011

Publication year:2011

Language:English

E-ISSN:21622701

ISBN-13:9781557529138

Document type:Conference article (CA)

Conference name:Integrated Photonics Research, Silicon and Nanophotonics, IPRSN 2011

Conference date:June 12, 2011  -  June 15, 2011

Conference location:Toronto, Canada

Conference code:102618

Publisher:Optical Society of America, 2010 Massachusetts Ave, NW, Washington, DC, DC 20036-1023, United States

Abstract:The ring micro-fiber is studied. The calculating results show that light can be concentrated in nanometer-thin low-index ring regions with very high confinement efficiency. &copy; OSA/ANIC/IPR/Sensors/SL/SOF/SPPCom/2011.

Number of references:4

Main heading:Silicon

Controlled terms:Nanophotonics - Optical fibers - Photonics

Uncontrolled terms:High confinement - Micro-fiber

Classification code:712.1.1 Single Element Semiconducting Materials - 741.1 Light/Optics - 741.1.2 Fiber Optics

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 422>

 

Accession number:20111013735394

Title:Development of Shenguang III facility general diagnostic instrument manipulator

Authors:Yang, Zhenghua (1); Liu, Shenye (1); Cao, Zhurong (1); Jiang, Shaoen (1); Ding, Yongkun (1); He, Junhua (2); Zhang, Min (2); Wei, Mingzhi (2); Wang, Wei (2); Yang, Zhiwen (1)

Author affiliation:(1) Research Center of Laser Fusion, CAEP, P. O. Box 919-986, Mianyang 621900, China; (2) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (3) College of Optoelectronic Engineering, Chongqing University, Chongqing 400030, China

Corresponding author:Yang, Z.(yzh@caep.ac.cn)

Source title:Qiangjiguang Yu Lizishu/High Power Laser and Particle Beams

Abbreviated source title:Qiangjiguang Yu Lizishu

Volume:23

Issue:1

Issue date:January 2011

Publication year:2011

Pages:115-120

Language:Chinese

ISSN:10014322

CODEN:QYLIEL

Document type:Journal article (JA)

Publisher:Editorial Office of High Power Laser and Particle Beams, P.O. Box 919-805, Mianyang, 621900, China

Abstract:The Shenguang III facility general diagnostic instrument manipulator provides a diagnostic platform to insert or retract various diagnostic systems into and out of the target chamber. It provides precision radial positioning and pointing capability, and it can carry diagnostic systems to specific position. It can also ensure the installation, debugging and maintaining of diagnostic system without affecting the vacuum in the target chamber. Installed on the Shenguang III prototype facility, it provides the radial positioning accuracy of 36 &mu;m, and the pointing precision of 13 &mu;m in X direction and 8 &mu;m in Y direction. Full path positioning repeatability is 20 &mu;m in radial direction, 30 &mu;m in X direction and 12 &mu;m in Y direction. Laser shot testing with X-ray framing camera indicates that, pointing accuracies in X and Y directions, radial positioning accuracy, vacuum capability, interface all meet the requirements of physical experiments. The manipulator also has the immunity to electromagnetic interference and radiation.

Number of references:6

Main heading:Program diagnostics

Controlled terms:Electromagnetic pulse - Instruments - Manipulators - Program debugging - Vacuum

Uncontrolled terms:General diagnostic instrument manipulator - Pointing accuracy - Positioning accuracy - Positioning repeatability - Radial positioning accuracy

Classification code:943 Mechanical and Miscellaneous Measuring Instruments - 942 Electric and Electronic Measuring Instruments - 941 Acoustical and Optical Measuring Instruments - 944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments - 731.5 Robotics - 701 Electricity and Magnetism - 633 Vacuum Technology - 723.1 Computer Programming

DOI:10.3788/HPLPB20112301.0115

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 423>

 

Accession number:20114114412956

Title:Wideband ultraflat slow light with large group index in a W1 photonic crystal waveguide

Authors:Liang, Jian (1); Ren, Li-Yong (1); Yun, Mao-Jin (2); Han, Xu (1); Wang, Xing-Jun (3)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (2) College of Physics Science, Qingdao University, Qingdao 266071, China; (3) State Key Laboratory on Advanced Optical Communication Systems and Networks, Peking University, Beijing 100871, China

Corresponding author:Ren, L.-Y.(renliy@opt.ac.cn)

Source title:Journal of Applied Physics

Abbreviated source title:J Appl Phys

Volume:110

Issue:6

Issue date:September 15, 2011

Publication year:2011

Article number:063103

Language:English

ISSN:00218979

CODEN:JAPIAU

Document type:Journal article (JA)

Publisher:American Institute of Physics, 2 Huntington Quadrangle, Suite N101, Melville, NY 11747-4502, United States

Abstract:We demonstrate that slow light with large group-index, wideband, and low dispersion can be realized in a silicon-on-insulator W1-type photonic crystal waveguide by simply shifting the first two rows of air-holes adjacent to the waveguide to specific directions. Keeping the group index at 46, 60, 86, 111, 151, and 233, respectively, while restricting its variation within a 10 range, we accordingly obtain a slow light bandwidth of 9.0 nm, 6.7 nm, 4.6 nm, 3.3 nm, 2.4 nm, and 1.7 nm, respectively. The normalized delay-bandwidth product keeps around 0.25 for all cases. Moreover, we obtain ultraflat slow light with bandwidths over 3.0 nm, 2.4 nm, 1.6 nm, 1.3 nm, 0.93 nm, and 0.6 nm, respectively, where the group index variation is in a range of only 0.8. Numerical simulations are performed, utilizing the 2D plane wave expansion method and the finite-difference time-domain method. &copy; 2011 American Institute of Physics.

Number of references:28

Main heading:Slow light

Controlled terms:Bandwidth - Finite difference time domain method - Numerical methods - Optical waveguides - Photonic crystals - Time domain analysis - Waveguides

Uncontrolled terms:Air holes - Group index - Large groups - Photonic crystal waveguide - Plane wave expansion method - Silicon on insulator - UltraFlat - Wide-band

Classification code:714.3 Waveguides - 716.1 Information Theory and Signal Processing - 741.1 Light/Optics - 741.3 Optical Devices and Systems - 921 Mathematics - 921.6 Numerical Methods

DOI:10.1063/1.3634074

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 424>

 

Accession number:20113114199247

Title:Current characteristic analysis of thermoelectric cooler

Authors:Pan, Haijun (1); Ruan, Ping (2); Li, Fu (2); Wang, Hongwei (1)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710068, China; (2) Graduate University of Chinese Academy of Sciences, Beijing 100039, China

Corresponding author:Pan, H.(dutt386@163.com)

Source title:Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering

Abbreviated source title:Hongwai yu Jiguang Gongcheng Infrared Laser Eng.

Volume:40

Issue:6

Issue date:June 2011

Publication year:2011

Pages:1006-1010

Language:Chinese

ISSN:10072276

Document type:Journal article (JA)

Publisher:Chinese Society of Astronautics, P.O. Box 225-32, Tianjin, 300192, China

Abstract:With the development of high performance cooling CCD imaging module in aerospace imaging detection, thermoelectric refrigeration is widely used for precision temperature control of electronic equipments as an effective active thermal control method. So the working current characteristic of thermoelectric cooler (TEC) was analyzed. Firstly, the operating modes of a TEM (thermoelectric module), such as cooling, heating and thermoelectric generation were introduced based on the analysis of the principle of thermoelectric refrigeration. Then, the temperature distribution in a thermocouple was analyzed under the first boundary condition. Finally, the influence of working current on the performance of thermoelectric refrigerator was analyzed, and the selection range of working current under cooling mode was obtained. The results show that the refrigeration effect can be decreased by too much or too little working current. Therefore these results have great value for the selection of working current of thermoelectric cooler.

Number of references:11

Main heading:Thermoelectric equipment

Controlled terms:Cooling systems - Electronic cooling - Temperature control - Thermocouples - Thermoelectric refrigeration - Thermoelectricity

Uncontrolled terms:Active thermal control - CCD imaging - Cooling mode - Current characteristic - Operating modes - Precision temperature control - Refrigeration effect - TEC - Thermoelectric cooler - Thermoelectric generation  - Thermoelectric modules - Thermoelectric refrigerators - Working current

Classification code:615.4 Thermoelectric Energy - 641.2 Heat Transfer - 731.3 Specific Variables Control - 944.5 Temperature Measuring Instruments

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 425>

 

Accession number:20114814562850

Title:Femtosecond electron pulse compression by using the time focusing technique in ultrafast electron diffraction

Authors:Wen, Wen-Long (1); Lei, Xiao-Hong (1); Hu, Xin (3); Xu, Xiang-Yan (1); Wang, Jun-Feng (1); Cao, Xi-Bin (1); Liu, Hu-Lin (1); Wang, Chao (1); Dang, Li-Hong (4); Tian, Jin-Shou (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (2) Graduate University of the Chinese Academy of Sciences, Beijing 100049, China; (3) Research Centre of Laser Fusion, China Academy of Engineering Physics, Mianyang 621900, China; (4) Xi'An Communications Institution, Xi'an 710106, China

Corresponding author:Wen, W.-L.(romber@opt.ac.cn)

Source title:Chinese Physics B

Abbreviated source title:Chin. Phys.

Volume:20

Issue:11

Issue date:November 2011

Publication year:2011

Article number:114102

Language:English

ISSN:16741056

Document type:Journal article (JA)

Publisher:Institute of Physics Publishing, Temple Circus, Temple Way, Bristol, BS1 6BE, United Kingdom

Abstract:We present a new model of an electron gun for generating subrelativistic femtosecond (fs) electron pulses. The basic idea is to utilize a dc acceleration stage combined with a time focusing region, the time focusing electrode generates an electron energy chirp for bunching at the target. Without considering the space charge effects, simulations of the electron gun were carried out under the conditions of different dc voltages and various slopes of the voltage added on the time focusing electrode. Tracing and simulating large numbers of photoelectrons through Monte - Carlo and finite difference methods, the electron pulses with 1 ps can be compressed to 55 fs, which will allow significant advances in the field of ultrafast diagnosis. &copy; 2011 Chinese Physical Society and IOP Publishing Ltd.

Number of references:16

Main heading:Electrons

Controlled terms:Electric fields - Electron guns - Focusing - Pulse compression

Uncontrolled terms:DC voltage - Electron energies - Electron pulse - Femtosecond electron pulse compression - Femtoseconds - New model - Space charge effects - temporal pulse compressing - Time focusing - Time-dependent electric field  - Ultra-fast - Ultrafast electron diffraction

Classification code:701.1 Electricity: Basic Concepts and Phenomena - 711.1 Electromagnetic Waves in Different Media - 714.1 Electron Tubes

DOI:10.1088/1674-1056/20/11/114102

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 426>

 

Accession number:20113414264253

Title:Soliton formation and evolution in passively-mode-locked lasers with ultralong anomalous-dispersion fibers

Authors:Liu, Xueming (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China

Corresponding author:Liu, X.(liuxueming72@yahoo.com)

Source title:Physical Review A - Atomic, Molecular, and Optical Physics

Abbreviated source title:Phys Rev A

Volume:84

Issue:2

Issue date:August 19, 2011

Publication year:2011

Article number:023835

Language:English

ISSN:10502947

E-ISSN:10941622

CODEN:PLRAAN

Document type:Journal article (JA)

Publisher:American Physical Society, One Physics Ellipse, College Park, MD 20740-3844, United States

Abstract:The soliton formation and evolution are numerically and experimentally investigated in passively-mode-locked lasers where pulses encounter ultralong anomalous-dispersion fibers. The pulse formation and evolution in lasers are determined by two balances, namely, nonlinearity and anomalous-dispersion balance and intracavity filtering and self-amplitude modulation balance. It is numerically found that a higher-energy soliton can be split into identical lower-energy multisolitons with exactly the same physical properties. Simulation results show that the separation of neighboring solitons is variational in the temporal domain. The temporal and spectral characteristics of solitons have large variations throughout the laser cavity, qualitatively distinct from the steady state of conventional solitons. The experimental observations confirm the theoretical predictions. &copy; 2011 American Physical Society.

Number of references:37

Main heading:Mode-locked fiber lasers

Controlled terms:Dispersions - Solitons

Uncontrolled terms:Experimental observation - Intracavities - Laser cavity - Non-Linearity - Pulse formation - Simulation result - Soliton formation - Spectral characteristics - Steady state - Temporal domain  - Theoretical prediction

Classification code:744.1 Lasers, General - 931.3 Atomic and Molecular Physics - 951 Materials Science

DOI:10.1103/PhysRevA.84.023835

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 427>

 

Accession number:20113714332382

Title:Poisson noise removal for X-ray pulsar integrated pulse profile

Authors:Hu, Huijun (1); Zhao, Baosheng (1); Sheng, Lizhi (1); Yan, Qiurong (1); Yang, Hao (1); Chen, Baomei (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, Shaanxi 710119, China; (2) Graduate University of Chinese Academy of Sciences, Beijing 100049, China

Corresponding author:Hu, H.

Source title:Guangxue Xuebao/Acta Optica Sinica

Abbreviated source title:Guangxue Xuebao

Volume:31

Issue:8

Issue date:August 2011

Publication year:2011

Article number:0804002

Language:Chinese

ISSN:02532239

CODEN:GUXUDC

Document type:Journal article (JA)

Publisher:Chinese Optical Society, P.O. Box 80, Xi'an, 710068, China

Abstract:The photon detection model of X-ray pulsar and the construction of pulsar integrated pulse profile are discussed. The characteristics of pulse profile which is reconstructed by the way of photon counting are analyzed. A de-noising algorithm based on non-normalized Haar wavelet is proposed, and the optimal parameters for wavelet threshold function are derived based on Haar wavelet. The experimental study is done in the ground simulated experimental system for X-ray pulsar navigation. Experimental results show that the peak signal-to-noise ratio can be improved by at least 2 dB, and the accuracy of time-of-arrival (TOA) measurement is also improved, which is proved by Monte Carlo simulation.

Number of references:11

Main heading:Electromagnetic wave emission

Controlled terms:Computer simulation - Monte Carlo methods - Navigation - Photons - Poisson distribution - Poisson ratio - Signal to noise ratio - X rays

Uncontrolled terms:De-noising algorithm - Experimental studies - Experimental system - Haar wavelets - Integrated pulse - Monte Carlo Simulation - Optimal parameter - Peak signal-to-noise ratio - Photon counting - Photon detection  - Poisson noise - Pulsar navigation - Pulse profile - Time-of-arrival measurements - Wavelet threshold - X-ray pulsars

Classification code:932.1 High Energy Physics - 922.2 Mathematical Statistics - 922.1 Probability Theory - 741.1 Light/Optics - 951 Materials Science - 723.5 Computer Applications - 716.1 Information Theory and Signal Processing - 711 Electromagnetic Waves - 421 Strength of Building Materials; Mechanical Properties - 716.3 Radio Systems and Equipment

DOI:10.3788/AOS201131.0804002

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 428>

 

Accession number:20113314236919

Title:An adaptive OPD and dislocation prediction used characteristic of interference pattern for interference hyperspectral image compression

Authors:Wen, Jia (1); Ma, Caiwen (2); Shui, Penglang (2)

Author affiliation:(1) School of Electronic and Information Engineering, Xi'An Jiaotong University, Xi'an, Shaanxi, 710049, China; (2) Photoelectric Measurement and Control Technology Research Department, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, Shaanxi, 710119, China

Corresponding author:Wen, J.(b09033@opt.cn)

Source title:Optics Communications

Abbreviated source title:Opt Commun

Volume:284

Issue:20

Issue date:September 15, 2011

Publication year:2011

Pages:4903-4909

Language:English

ISSN:00304018

CODEN:OPCOB8

Document type:Journal article (JA)

Publisher:Elsevier, P.O. Box 211, Amsterdam, 1000 AE, Netherlands

Abstract:According to the imaging principle and characteristic of LASIS (Large Aperture Static Interference Imaging Spectrometer), we discovered that the 3D (three dimensional) image sequences formed by different interference pattern frames, which were formed in the imaging process of LASIS Interference hyperspectral image, had much stronger correlation than the original interference hyperspectral image sequences, either in 2D (two dimensional) spatial domain or in the spectral domain. We put this characteristic into image compression and proposed an adaptive OPD (optical path difference) and dislocation prediction algorithm for interference hyperspectral image compression. Compared the new algorithm proposed in this paper with Dual-Direction Prediction [1] proposed in 2009, lots of experimental results showed that the prediction error entropy of the new algorithm was much smaller. In the prediction step of lifting wavelet transform, this characteristic would also reduce the entropy of coefficients in high frequency significantly, which would be more advantageous for quantification coding [2]. &copy; 2011 Elsevier B.V. All rights reserved.

Number of references:9

Main heading:Three dimensional

Controlled terms:Algorithms - Entropy - Forecasting - Image compression - Wavelet transforms

Uncontrolled terms:Hyper-spectral images - Interference pattern - LASIS - Optical information - Spectrum compression

Classification code:641.1 Thermodynamics - 723 Computer Software, Data Handling and Applications - 723.5 Computer Applications - 741 Light, Optics and Optical Devices - 921 Mathematics - 921.3 Mathematical Transformations

DOI:10.1016/j.optcom.2011.06.061

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 429>

 

Accession number:20120114664493

Title:Precise thermal control of CCD assembly of space optical remote sensor

Authors:Yang, Wengang (1); Li, Yifan (2); He, Tianbing (1); Bai, Zhe (1); Zhang, Xianghui (1); Wang, Yinghao (1); Yu, Lei (2); Fu, Weichun (2); Li, Yingcai (1)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Science, Xi'an, 710119, China; (2) No.5 Academy of Aerospace Science and Technology Group of China, Beijing, 100080, China

Corresponding author:Yang, W.

Source title:Proceedings of SPIE - The International Society for Optical Engineering

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:8321

Monograph title:Seventh International Symposium on Precision Engineering Measurements and Instrumentation

Issue date:2011

Publication year:2011

Article number:83211V

Language:English

ISSN:0277786X

CODEN:PSISDG

ISBN-13:9780819479402

Document type:Conference article (CA)

Conference name:7th International Symposium on Precision Engineering Measurements and Instrumentation

Conference date:August 7, 2011 - August 11, 2011

Conference location:Lijiang, China

Conference code:87934

Sponsor:International Committee on Measurements and Instrumentation; National Natural Science Foundation of China

Publisher:SPIE, P.O. Box 10, Bellingham, WA 98227-0010, United States

Abstract:One of the most significant requirements driving CCD assemblies design is the operating temperature. In order to avoid unaccepted dark current, CCD need operate between 7&deg;C and 15&deg;C and temperature gradient across the focal plane should be not greater than 1.0&deg;C. These requirements must be achieved by combining active and passive measures. This paper focuses on the precise thermal control design, analysis and test. Because CCD assemblies include focal electronics and movable precise focalizing parts, thermal control must utilize the integrated method to achieve compatible design. Largely using standard and well-proven technologies, this paper also points out some special techniques used. Based on finite difference method and transient energy equations, thermal model of CCD assemblies were built utilizing thermal software and solved for extreme cases. To validate the design, thermal balance test has been done. Analysis and test results have shown that CCD temperature can be controlled between 7.2&deg;C and 13.5&deg;C and temperature gradient was less than 0.5&deg;C. These jobs could give some guidance and reference for the precise thermal control of CCD assembly of other space optical remote-sensor. &copy; 2011 Copyright Society of Photo-Optical Instrumentation Engineers (SPIE).

Number of references:5

Main heading:Precision engineering

Controlled terms:Charge coupled devices - Design - Measurements - Motion compensation - Remote sensing - Temperature control - Thermal gradients - Thermoanalysis

Uncontrolled terms:Compatible design - Focal Plane - Integrated method - Operating temperature - space optical remote sensor - Techniques used - Temperature gradient - Thermal balance test - Thermal control - Thermal model  - Thermal software - Transient energy equation

Classification code:944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments - 943 Mechanical and Miscellaneous Measuring Instruments - 942 Electric and Electronic Measuring Instruments - 941 Acoustical and Optical Measuring Instruments - 801 Chemistry - 741 Light, Optics and Optical Devices - 731.3 Specific Variables Control - 731.1 Control Systems - 714.2 Semiconductor Devices and Integrated Circuits - 641.1 Thermodynamics - 408 Structural Design

DOI:10.1117/12.904832

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 430>

 

Accession number:20113714320176

Title:An improved, real-time method for removing the cyclic error of a homodyne interferometer

Authors:Zhao, Suwen (1); Wen, Desheng (1); Zhu, Shaolan (1); Liang, Shitong (1)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Science, Xi'an, Shaanxi 710119, China; (2) Graduate School of the Chinese Academy of Sciences, Beijing 100039, China

Corresponding author:Zhao, S.(zhaosuwen@opt.ac.cn;)

Source title:Proceedings of SPIE - The International Society for Optical Engineering

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:8192

Monograph title:International Symposium on Photoelectronic Detection and Imaging 2011: Laser Sensing and Imaging; and Biological and Medical Applications of Photonics Sensing and Imaging

Issue date:2011

Publication year:2011

Article number:81924G

Language:English

ISSN:0277786X

CODEN:PSISDG

ISBN-13:9780819488336

Document type:Conference article (CA)

Conference name:International Symposium on Photoelectronic Detection and Imaging 2011: Laser Sensing and Imaging; and Biological and Medical Applications of Photonics Sensing and Imaging

Conference date:May 24, 2011 - May 26, 2011

Conference location:Beijing, China

Conference code:86437

Sponsor:Chinese Society of Astronautics

Publisher:SPIE, P.O. Box 10, Bellingham, WA 98227-0010, United States

Abstract:The nonlinear error of a homodyne interferometer is presented: the amplitudes, the phase and the offsets. An improved compensation method is introduced since the conventional Heydeman modal' calculation is very time-consuming. First, the "zero drift" problem is solved with the polarization phase-shifting technology; second, a fast algorithm based on the Heydeman method is introduced to calculate the errors; and third, electronic circuit is used to remove the nonlinear errors timely. The test result shows that the nonlinearity of the homodyne interferometer could be reduced to subnanometer over the measuring range of 20cm, and the accuracy can be improved more than tenfold by the dynamic compensation method. &copy; 2011 SPIE.

Number of references:8

Main heading:Interferometers

Controlled terms:Error detection - Laser interferometry - Medical applications - Medical imaging

Uncontrolled terms:Compensation method - Cyclic errors - Dynamic compensation - Fast algorithms - Homodyne interferometers - Lissajous figures - Non-linear error - Non-Linearity - Phase-shifting technology - Real-time compensation  - Single frequency laser - Subnanometers - Test results - Zero drift

Classification code:461.1 Biomedical Engineering - 721.1 Computer Theory, Includes Formal Logic, Automata Theory, Switching Theory, Programming Theory - 941.3 Optical Instruments - 941.4 Optical Variables Measurements

DOI:10.1117/12.902439

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 431>

 

Accession number:20112013983318

Title:Spatial diagnostics of 532-nm laser-induced aluminum plasma

Authors:Luo, W.F. (1); Zhao, X.X. (2); Sun, Q.B. (1); Gao, C.X. (1); Tang, J. (1); Zhao, W. (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (2) Physics Department, Xi'An University of Arts and Science, Xi'an, 710065, China

Corresponding author:Luo, W. F.(luowf@opt.ac.cn)

Source title:Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

Abbreviated source title:Nucl Instrum Methods Phys Res Sect A

Volume:637

Issue:1 SUPPL.

Issue date:May 1, 2011

Publication year:2011

Pages:S158-S160

Language:English

ISSN:01689002

CODEN:NIMAER

Document type:Conference article (CA)

Publisher:Elsevier, P.O. Box 211, Amsterdam, 1000 AE, Netherlands

Abstract:Spatial characteristics of the plasma generated by 532-nm Nd:YAG laser irradiation of aluminum alloy in air were studied. The electron density inferred by measuring the Stark broadened line profile of Al II at 281.62 nm decreases with increasing distance from the target surface. The electron temperature was determined by using the Boltzmann plot method. Due to thermal conduction towards the solid target and radiative cooling of the plasma, as well as conversion of thermal energy to kinetic energy, the electron temperature decreases both at the plasma edge and close to the target surface. &copy; 2010 Elsevier B.V. All rights reserved.

Number of references:13

Main heading:Plasmas

Controlled terms:Aluminum - Electron temperature - Emission spectroscopy - Laser diagnostics - Neodymium lasers - Plasma turbulence

Uncontrolled terms:Aluminum plasmas - Boltzmann plot - Electron densities - Laser induced - LIBS - Line profiles - ND : YAG lasers - Plasma edges - Radiative cooling - Solid targets  - Spatial characteristics - Target surface - Temperature decrease - Thermal conduction

Classification code:541.1 Aluminum - 744.4 Solid State Lasers - 744.9 Laser Applications - 801 Chemistry - 932.1 High Energy Physics - 932.3 Plasma Physics

DOI:10.1016/j.nima.2010.02.046

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 432>

 

Accession number:20114114423988

Title:Spectrum reshaping of amplified pulse in silicon nanowaveguide

Authors:Wu, Jian-Wei (1); Sarma, Amarendra K. (4); Zhang, Xu-Ping (1)

Author affiliation:(1) Institute of Optical Communication Engineering Research, Nanjing University, Nanjing 210093, China; (2) State Key Laboratory of Transient Optics and Photonics, Chinese Academy of Sciences, Xi'an 710119, China; (3) State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing 100876, China; (4) Indian Institute of Technology Guwahati, Guwahati-781039, Assam, India

Corresponding author:Zhang, X.-P.(xpzhang@nju.edu.cn)

Source title:Optics Communications

Abbreviated source title:Opt Commun

Volume:284

Issue:24

Issue date:December 1, 2011

Publication year:2011

Pages:5641-5644

Language:English

ISSN:00304018

CODEN:OPCOB8

Document type:Journal article (JA)

Publisher:Elsevier, P.O. Box 211, Amsterdam, 1000 AE, Netherlands

Abstract:A device consisting of a cascaded semiconductor optical amplifier (SOA) and silicon on insulator (SOI) optical waveguide is presented to amplify and reshape the frequency spectrum of optical pulses in the picoseconds time duration. Numerical simulations show that the output spectrum of the amplified pulse by SOA can be effectively reshaped by utilizing the SOI waveguide. The length of the SOI waveguide may be judiciously adjusted to significantly reduce the frequency chirp of the output pulse from the SOA resulting in reshaping of the output spectrum. We find that the property of pulse spectrum is sensitive to the input pulse power and its temporal width. &copy; 2011 Elsevier B.V. All rights reserved. &copy; 2011 Elsevier B.V. All rights reserved.

Number of references:20

Main heading:Semiconducting silicon

Controlled terms:Integrated optics - Laser pulses - Light amplifiers - Light pulse generators - Semiconducting silicon compounds - Spectroscopy - Waveguides

Uncontrolled terms:Amplified pulse - Frequency chirp - Frequency spectra - Input pulse - Nonlinear waveguides - Optical pulse generation - Output pulse - Output spectrum - Picoseconds - Pulse spectrum  - Silicon-on-insulators - SOI waveguides - Temporal width - Time duration - Ultrafast process

Classification code:712.1.1 Single Element Semiconducting Materials - 712.1.2 Compound Semiconducting Materials - 714.3 Waveguides - 741.3 Optical Devices and Systems - 744.1 Lasers, General - 801 Chemistry

DOI:10.1016/j.optcom.2011.08.010

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 433>

 

Accession number:20112314032177

Title:All-optical 40 Gb/s wavelength conversion using hybrid SOI-based MZI and SOAs configuration

Authors:Wu, Jian-Wei (1); Lee, Hyun-Shik (2); Lee, El-Hang (2)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Chinese Academy of Sciences, Xi'an 710119, China; (2) MicroPhotonics Advanced Research Center, School of Information and Communication Engineering, INHA University, 253 Yonghyun-Dong, Nam-Gu, Incheon 402-751, Korea, Republic of; (3) Key Laboratory of Information Photonics and Optical Communications, Ministry of Education, Beijing University of Posts and Telecommunications, Beijing 100876, China

Corresponding author:Wu, J.-W.(jwwu05@gmail.com)

Source title:Optics Communications

Abbreviated source title:Opt Commun

Volume:284

Issue:16-17

Issue date:August 1, 2011

Publication year:2011

Pages:4000-4006

Language:English

ISSN:00304018

CODEN:OPCOB8

Document type:Journal article (JA)

Publisher:Elsevier, P.O. Box 211, Amsterdam, 1000 AE, Netherlands

Abstract:In this paper, we present a compact combination of silicon-based Mach-Zehnder interferometer (MZI) and semiconductor optical amplifiers (SOAs) to perform all-optical return to zero (RZ)-to-RZ and non-return to zero (NRZ) wavelength conversions at a bit rate of 40 Gb/s. Using the proposed theoretical project, the attractive issue is that converted signals with inverted and noninverted formats can be simultaneously achieved at the same target wavelength. Moreover, both extinction ratio and eye-opening ratio of the converted RZ and NRZ signals can be significantly optimized by judiciously adjusting the system parameters and initial conditions. &copy; 2011 Elsevier B.V. All rights reserved.

Number of references:32

Main heading:Optical frequency conversion

Controlled terms:Optical switches - Photonics - Semiconducting silicon - Semiconducting silicon compounds - Semiconductor optical amplifiers

Uncontrolled terms:40 Gb/s - All-optical - Bit rates - Extinction ratios - Initial conditions - Non-return to zeros - NRZ signals - Return-to-zero - Silicon-based - Wavelength conversion

Classification code:712.1.1 Single Element Semiconducting Materials - 712.1.2 Compound Semiconducting Materials - 741.1.1 Nonlinear Optics - 741.3 Optical Devices and Systems

DOI:10.1016/j.optcom.2011.04.045

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 434>

 

Accession number:20113314229596

Title:Error-free OTDM demultiplexer using the supercontinuum spectrum-slicing induced clock signal

Authors:Feng, Huan (1); Zhao, Wei (1); Yan, Shuangyi (1); Xie, Xiaoping (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China

Corresponding author:Feng, H.(hfengoptics@gmail.com)

Source title:Optics Communications

Abbreviated source title:Opt Commun

Volume:284

Issue:19

Issue date:September 1, 2011

Publication year:2011

Pages:4327-4330

Language:English

ISSN:00304018

CODEN:OPCOB8

Document type:Journal article (JA)

Publisher:Elsevier, P.O. Box 211, Amsterdam, 1000 AE, Netherlands

Abstract:We experimentally demonstrate an 80-Gb/s optical time-division multiplexing (OTDM) demultiplexing system based on the cross-phase modulation (XPM) effect in high-nonlinearity fibers. The message carried by OTDM signal is loaded onto the probe signal by sampling the OTDM packet with a 10-GHz stable and controllable clock pulse train. The clock signal with ~ 11 ps pulse width is achieved by employing supercontinuum spectrum-slicing technique, which is distinct from that based on mode-locked lasers. The demultiplexed signal is obtained by filtering out the XPM-induced spectral sidebands of the probe signal. The OTDM demultiplexer based on this novel technique shows excellent performances and contributes to a bit error rate of as low as 10^-9. &copy; 2011 Elsevier B.V.

Number of references:24

Main heading:Bit error rate

Controlled terms:Demultiplexing - Electric clocks - Mode-locked fiber lasers - Optical communication - Phase modulation - Probes - Q switched lasers - Time division multiple access - Time division multiplexing

Uncontrolled terms:Clock pulse trains - Clock signal - Cross-phase modulations - Excellent performance - Mode-locked laser - Novel techniques - Optical time division multiplexing - OTDM Demultiplexer - OTDM demultiplexing - OTDM signals  - Probe signals - Pulse width - Spectral sidebands - Spectrum slicing - Super-continuum spectrum - Supercontinuum - System-based

Classification code:943.3 Special Purpose Instruments - 943 Mechanical and Miscellaneous Measuring Instruments - 942 Electric and Electronic Measuring Instruments - 941 Acoustical and Optical Measuring Instruments - 744.1 Lasers, General - 944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments - 723.1 Computer Programming - 718 Telephone Systems and Related Technologies; Line Communications - 717.1 Optical Communication Systems - 717 Optical Communication - 716 Telecommunication; Radar, Radio and Television - 723 Computer Software, Data Handling and Applications

DOI:10.1016/j.optcom.2011.05.027

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 435>

 

Accession number:20112814130573

Title:Analysis of nanoplasmonic wavelength demultiplexing based on metal-insulator-metal waveguides

Authors:Lu, Hua (1); Liu, Xueming (1); Gong, Yongkang (1); Mao, Dong (1); Wang, Guoxi (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China

Corresponding author:Liu, X.(liuxueming72@yahoo.com)

Source title:Journal of the Optical Society of America B: Optical Physics

Abbreviated source title:J Opt Soc Am B

Volume:28

Issue:7

Issue date:July 1, 2011

Publication year:2011

Pages:1616-1621

Language:English

ISSN:07403224

CODEN:JOBPDE

Document type:Journal article (JA)

Publisher:Optical Society of America, 2010 Massachusetts Ave, NW, Washington, DC, DC 20036-1023, United States

Abstract:Nanoplasmonic wavelength demultiplexing (WDM) structures based on metal-insulator-metal waveguides are designed and investigated numerically. The WDM structures possess a series of resonator-based channel drop filters near a bus waveguide. The demultiplexing wavelength of each channel can be tuned by adjusting the geometrical parameters and refractive index of the resonator. The numerical results based on the finite-difference time-domain method can be accurately explained by the resonant theory. Meanwhile, the transmission characteristics of the drop waveguide are influenced by the coupling distance between the resonator and drop/bus waveguides, which can be exactly analyzed by the temporal coupled-mode theory. Additionally, it is found that the drop efficiencies can be improved by a factor of more than 1.8 when a reflection feedback is introduced in the bus waveguide. &copy; 2011 Optical Society of America.

Number of references:43

Main heading:Time domain analysis

Controlled terms:Demultiplexing - Drops - Finite difference time domain method - Metal insulator boundaries - Metals - MIM devices - Numerical methods - Refractive index - Resonators - Semiconductor insulator boundaries  - Waveguides

Uncontrolled terms:Bus waveguides - Channel drop filters - Coupled-mode theory - Drop efficiency - Drop waveguides - Geometrical parameters - Metal insulator metals - Numerical results - Transmission characteristics - Wavelength demultiplexing

Classification code:921.6 Numerical Methods - 921 Mathematics - 741.1 Light/Optics - 718 Telephone Systems and Related Technologies; Line Communications - 717 Optical Communication - 716 Telecommunication; Radar, Radio and Television - 714 Electronic Components and Tubes - 531 Metallurgy and Metallography - 443.1 Atmospheric Properties

DOI:10.1364/JOSAB.28.001616

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 436>

 

Accession number:20110613653583

Title:Optimized synthesis of fiber Bragg gratings with triangular spectrum for wavelength-interrogation application

Authors:Gong, Yongkang (1); Liu, Xueming (1); Wang, Leiran (1)

Author affiliation:(1) Chinese Academy of Sciences, State Key Laboratory of Transient Optics and Photonics, Xian Institute of Optics and Precision Mechanics, Xian 710119, China

Corresponding author:Gong, Y.

Source title:Optical Engineering

Abbreviated source title:Opt Eng

Volume:50

Issue:2

Issue date:February 2011

Publication year:2011

Article number:024401

Language:English

ISSN:00913286

E-ISSN:15602303

CODEN:OPEGAR

Document type:Journal article (JA)

Publisher:SPIE, P.O. Box 10, Bellingham, WA 98227-0010, United States

Abstract:A novel method for synthesizing arbitrary-shape triangular-spectrum fiber Bragg gratings (TS-FBGs) is proposed. It involves the use of a discrete layer peeling method for exploiting initial guess and a simulated annealing method for optimizing the desired grating parameter. By comparing it to the reported TS-FBGs synthesis methods, the proposed method has advantages of reducing the maximum index modulation and smoothing index modulation profile simultaneously. We employ the proposed method to synthesize FBGs with symmetric, asymmetric, and right-angled triangular spectrum, all of which have the low and smooth index modulation profiles. The synthesized gratings can act simple and cost-effective wavelength-interrogation devices in optical sensor systems. &copy; 2011 Society of Photo-Optical Instrumentation Engineers (SPIE).

Number of references:24

Main heading:Fiber Bragg gratings

Controlled terms:Fiber optic components - Fiber optic sensors - Fibers - Modulation - Simulated annealing

Uncontrolled terms:Discrete layers - Effective wavelength - Grating parameter - Index modulation - Initial guess - Novel methods - Optimized synthesis - sensing - Simulated annealing method - synthesis method

Classification code:817 Plastics and Other Polymers: Products and Applications - 812 Ceramics, Refractories and Glass - 741.3 Optical Devices and Systems - 921 Mathematics - 741.1.2 Fiber Optics - 717 Optical Communication - 716 Telecommunication; Radar, Radio and Television - 718 Telephone Systems and Related Technologies; Line Communications

DOI:10.1117/1.3533030

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.