当前位置: <RECORD 1>
Accession number:20103213143004
Title:Color to gray: Visual cue preservation
Authors:Song, Mingli (1); Tao, Dacheng (2); Chen, Chun (1); Li, Xuelong (3); Chen, Chang Wen (4)
Author affiliation:(1) College of Computer Science, Zhejiang University, Hangzhou 310027, 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; (4) Department of Computer Science and Engineering, University at Buffalo, State University of New York, Buffalo, NY 14260-2000, United States
Corresponding author:Song, M.(brooksong@zju.edu.cn)
Source title:IEEE Transactions on Pattern Analysis and Machine Intelligence
Abbreviated source title:IEEE Trans Pattern Anal Mach Intell
Volume:32
Issue:9
Issue date:2010
Publication year:2010
Pages:1537-1552
Article number:5530074
Language:English
ISSN:01628828
CODEN:ITPIDJ
Document type:Journal article (JA)
Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States
Abstract:Both commercial and scientific applications often need to transform color images into gray-scale images, e.g., to reduce the publication cost in printing color images or to help color blind people see visual cues of color images. However, conventional color to gray algorithms are not ready for practical applications because they encounter the following problems: 1) Visual cues are not well defined so it is unclear how to preserve important cues in the transformed gray-scale images; 2) some algorithms have extremely high time cost for computation; and 3) some require human-computer interactions to have a reasonable transformation. To solve or at least reduce these problems, we propose a new algorithm based on a probabilistic graphical model with the assumption that the image is defined over a Markov random field. Thus, color to gray procedure can be regarded as a labeling process to preserve the newly well-defined visual cues of a color image in the transformed gray-scale image. Visual cues are measurements that can be extracted from a color image by a perceiver. They indicate the state of some properties of the image that the perceiver is interested in perceiving. Different people may perceive different cues from the same color image and three cues are defined in this paper, namely, color spatial consistency, image structure information, and color channel perception priority. We cast color to gray as a visual cue preservation procedure based on a probabilistic graphical model and optimize the model based on an integral minimization problem. We apply the new algorithm to both natural color images and artificial pictures, and demonstrate that the proposed approach outperforms representative conventional algorithms in terms of effectiveness and efficiency. In addition, it requires no human-computer interactions. © 2010 IEEE.
Number of references:32
Main heading:Color
Controlled terms:Algorithms - Cost reduction - Graphic methods - Human computer interaction - Image analysis - Knowledge management - Optimization - Wavelet transforms
Uncontrolled terms:Color channels - Color images - Color-blind people - Conventional algorithms - Following problem - Gray-scale images - Image structure information - Markov Random Fields - Minimization problems - Model-based - Natural color images - probabilistic graphical model - Probabilistic graphical models - Scientific applications - Spatial consistency - Time cost - Visual cues
Classification code:921.5 Optimization Techniques - 902.1 Engineering Graphics - 903.3 Information Retrieval and Use - 911.2 Industrial Economics - 912.2 Management - 921 Mathematics - 921.3 Mathematical Transformations - 741.1 Light/Optics - 723.5 Computer Applications - 723.2 Data Processing and Image Processing - 723 Computer Software, Data Handling and Applications - 722.2 Computer Peripheral Equipment - 461.4 Ergonomics and Human Factors Engineering - 741 Light, Optics and Optical Devices
DOI:10.1109/TPAMI.2009.74
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 2>
Accession number:20100612690658
Title:High-channel-count plasmonic filter with the metal-insulator-metal Fibonacci-sequence gratings
Authors:Gong, Yongkang (1); Liu, Xueming (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:Optics Letters
Abbreviated source title:Opt. Lett.
Volume:35
Issue:3
Issue date:February 1, 2010
Publication year:2010
Pages:285-287
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:Fibonacci-sequence gratings based on metal-insulator-metal waveguides are proposed. The spectrum properties of this structure are numerically investigated by using the transfer matrix method. Numerical results demonstrate that the proposed structure can generate high-channel-count plasmonic stop bands and can find significant applications in highly integrated dense wavelength division multiplexing networks. © 2010 Optical Society of America.
Number of references:23
Main heading:Transfer matrix method
Controlled terms:Dense wavelength division multiplexing - Metal insulator boundaries - Metals - MIM devices - Multiplexing - Multiplexing equipment - Numerical analysis - Optical devices - Plasmons - Semiconductor insulator boundaries
Uncontrolled terms:Highly integrated - Metal insulator metals - Numerical results - Spectrum properties - Stop-bands
Classification code:932.3 Plasma Physics - 931.3 Atomic and Molecular Physics - 921.6 Numerical Methods - 921 Mathematics - 741.3 Optical Devices and Systems - 718 Telephone Systems and Related Technologies; Line Communications - 717 Optical Communication - 716 Telecommunication; Radar, Radio and Television - 714.2 Semiconductor Devices and Integrated Circuits - 712.1 Semiconducting Materials - 531 Metallurgy and Metallography
DOI:10.1364/OL.35.000285
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 3>
Accession number:20105213525756
Title:The analyze of the interference hyper-spectral image features and compression
Authors:Zhang, Lei (1); Zhang, Shancong (2); Bin, Xiangli (2); Quan, Shengxue (2)
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, China; (2) Academy of Opto-Electronics, Chinese Academy of Sciences, Beijing, China; (3) Shenyang Institute of Aeronautical Engineering, Shenyang, China
Corresponding author:Zhang, L.(zhangl_72@yahoo.com.cn)
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:7658
Monograph title:5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optoelectronic Materials and Devices for Detector, Imager, Display, and Energy Conversion Technology
Issue date:2010
Publication year:2010
Article number:765839
Language:English
ISSN:0277786X
CODEN:PSISDG
ISBN-13:9780819480880
Document type:Conference article (CA)
Conference name:5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optoelectronic Materials and Devices for Detector, Imager, Display, and Energy Conversion Technology
Conference date:April 26, 2010 - April 29, 2010
Conference location:Dalian, China
Conference code:82920
Sponsor:The Chinese Optical Society (COS); CAS, The Institute of Optics and Electronics (IOE); The Society of Photo-Optical Instrumentation Engineers (SPIE)
Publisher:SPIE, P.O. Box 10, Bellingham, WA 98227-0010, United States
Abstract:Interference hyper spectral image and the images contain some interference information which are collected by the LASIS are only middle results of the spectrometer, is a three-dimensional image. The amount of the data is large size, and need to be compressed. For testing the actual interference hyper spectral image, use different composed way, to compose of LAMIS and LADIS image, the LASIS image has different target with different spectral band, LAMIS has the same target with different spectrum, LADIS has the same spectrum with different target. The spatial correlation and spectral correlation are analyzed. The self-coefficient and cross-coefficient are also calculated. The method that LASIS extract into LADIS is proposed, which separate interference information form spatial image, and it is a new foundation for interference information protection of LASIS image. The feather of LASIS image is revealed, the results obtained can be use LASIS image processing and compressing. © 2010 Copyright SPIE - The International Society for Optical Engineering.
Number of references:8
Main heading:Three dimensional
Controlled terms:Display devices - Energy conversion - Image compression - Imaging systems - Manufacture - Materials testing - Optical data processing - Optoelectronic devices - Technology - Testing
Uncontrolled terms:Hyper-spectral images - Information protection - Interference - Large sizes - LASIS - Spatial correlations - Spatial images - Spectral band - Spectral correlation - Three dimensional images
Classification code:951 Materials Science - 902.1 Engineering Graphics - 901 Engineering Profession - 746 Imaging Techniques - 741.3 Optical Devices and Systems - 741 Light, Optics and Optical Devices - 722.2 Computer Peripheral Equipment - 537.1 Heat Treatment Processes - 525.5 Energy Conversion Issues - 423.2 Non Mechanical Properties of Building Materials: Test Methods - 423 Non Mechanical Properties and Tests of Building Materials - 422.2 Strength of Building Materials : Test Methods - 422 Strength of Building Materials; Test Equipment and Methods
DOI:10.1117/12.867626
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 4>
Accession number:20102813064316
Title:Three operating modes of femtosecond and picosecond pulses in a Ti: sapphire laser
Authors:Zhu, Chang-Jun (1); He, Jun-Fang (2); Zhai, Xue-Jun (1); Xue, Bing (1); Zhang, Ying-Tang (1); Zhang, Chong-Hui (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.-J.(cjzhu@xpu.edu.cn)
Source title:Guangdianzi Jiguang/Journal of Optoelectronics Laser
Abbreviated source title:Guangdianzi Jiguang
Volume:21
Issue:6
Issue date:June 2010
Publication year:2010
Pages:837-840
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:Three operating modes of femtosecond and picosecond pulses, which are independent self mode-locking, cross mode-locking and multi-pulse operating, are presented in a two-beam-pumped Ti: sapphire laser. Group velocity dispersion, self-phase modulation, cross-phase modulation, gain competition and self-amplitude modulation in the femtosecond and picosecond cavities are analyzed. The results show that, in the independent self mode-locking mode, group velocity dispersion and self-phase modulation largely determine the properties of the self mode-locked pulses, and in the cross mode-locking mode, the femtosecond and picosecond pulses are highly synchronized with a timing jitter of 517 fs and wavelength tuning ranges of 36 and 22 nm in the femtosecond and picosecond cavities, respectively. In the multi-pulse mode, the femtosecond pulse is still a single pulse, while the picosecond pulse splits into three sub-pulses, which is separated in time by 426 fs.
Number of references:12
Main heading:Pulsed laser applications
Controlled terms:Electromagnetic pulse - Fiber lasers - Group velocity dispersion - Laser mode locking - Light velocity - Modulation - Pumping (laser) - Sapphire - Self phase modulation - Timing jitter - Ultrashort pulses
Uncontrolled terms:Cross-phase modulations - Femtosecond pulse - Femtoseconds - Gain competition - Modelocking - Multipulses - Operating modes - Pico-second pulse - Picoseconds - Self mode locking - Self mode-locked - Single pulse - Ti: Sapphire laser - Wavelength-tuning range
Classification code:741.1.1 Nonlinear Optics - 741.1.2 Fiber Optics - 744.1 Lasers, General - 741.1 Light/Optics - 744.4 Solid State Lasers - 751 Acoustics, Noise. Sound - 752.1 Acoustic Devices - 744.9 Laser Applications - 741 Light, Optics and Optical Devices - 482.2.1 Gems - 701 Electricity and Magnetism - 711 Electromagnetic Waves - 471.4 Seawater, Tides and Waves - 716 Telecommunication; Radar, Radio and Television - 718 Telephone Systems and Related Technologies; Line Communications - 722.3 Data Communication, Equipment and Techniques - 717 Optical Communication
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 5>
Accession number:20103413182086
Title:Analysis of one-end-pumped Yb<sup>3+</sup>-doped gain guided and index antiguided fiber laser
Authors:Zhou, E. (1); Zhao, B. (2); Wang, X. (3); Wang, Y. (2); Wei, W. (1); Peng, B. (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 Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (3) School of Physical Electronics, University of Electronic Science and Technology of China, Sichuan 610054, China; (4) Institute of Advanced Materials, Nanjing University of Posts and Telecommunications, Nanjing 210003, China
Corresponding author:Wei, W.(iamww@fudan.edu.cn)
Source title:Applied Physics B: Lasers and Optics
Abbreviated source title:Appl Phys B
Volume:99
Issue:4
Issue date:June 2010
Publication year:2010
Pages:747-751
Language:English
ISSN:09462171
CODEN:APBOEM
Document type:Journal article (JA)
Publisher:Springer Verlag, Tiergartenstrasse 17, Heidelberg, D-69121, Germany
Abstract:The one-end-pumped Yb<sup>3+</sup>-doped gain guided and index antiguided (GG+IAG) fiber laser is analyzed with a rate equation model. By solving propagation rate equations, the pump and signal, the gain coefficients and other characteristics are obtained. Computation results show that a properly designed Yb<sup>3+</sup>-doped GG+IAG fiber laser can provide a large-mode laser with a short length. The most important issue addressed is the way of controlling the fiber laser length. © Springer-Verlag 2010.
Number of references:11
Main heading:Fibers
Controlled terms:Fiber lasers - Ytterbium
Uncontrolled terms:End-pumped - Gain coefficients - Gain guided - Index antiguided - Propagation rate - Rate-equation models - Short lengths
Classification code:547.2 Rare Earth Metals - 741.1.2 Fiber Optics - 812 Ceramics, Refractories and Glass - 817 Plastics and Other Polymers: Products and Applications
DOI:10.1007/s00340-010-3919-8
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 6>
Accession number:20102513020632
Title:Investigation of soliton pairs in an erbium-doped fiber laser with large normal dispersion
Authors:Mao, D. (1); Liu, X.M. (1); Wang, L.R. (1); Lu, H. (1); Hu, X.H. (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:Optics Communications
Abbreviated source title:Opt Commun
Volume:283
Issue:18
Issue date:September 15, 2010
Publication year:2010
Pages:3492-3496
Language:English
ISSN:00304018
CODEN:OPCOB8
Document type:Journal article (JA)
Publisher:Elsevier, P.O. Box 211, Amsterdam, 1000 AE, Netherlands
Abstract:We experimentally investigate the soliton pairs in a passively mode-locked erbium-doped fiber laser with large normal cavity dispersion. By adjusting the polarization state, four different kinds of soliton pairs are achieved. The pulses in soliton pairs exhibit different temporal separations, and show randomly distributed spikes on the top-flat of spectra. The pulse-pulse interactions in the soliton pairs are investigated, and it is suggested that the pulse separation, pulse duration, and their relative intensities all determine the strength of pulse interactions. © 2010 Elsevier B.V. All rights reserved.
Number of references:20
Main heading:Mode-locked fiber lasers
Controlled terms:Dispersions - Erbium - Fiber lasers - Fibers - Pulsed laser applications - Solitons
Uncontrolled terms:Erbium doped fiber laser - Normal dispersion - Passively mode-locked - Polarization state - Pulse durations - Pulse interaction - Pulse separations - Randomly distributed - Relative intensity - Soliton pairs - Temporal separation
Classification code:931.3 Atomic and Molecular Physics - 921.1 Algebra - 819.4 Fiber Products - 817 Plastics and Other Polymers: Products and Applications - 812 Ceramics, Refractories and Glass - 951 Materials Science - 801.3 Colloid Chemistry - 744.4 Solid State Lasers - 744.1 Lasers, General - 741.1.2 Fiber Optics - 547.2 Rare Earth Metals - 744.9 Laser Applications
DOI:10.1016/j.optcom.2010.04.107
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 7>
Accession number:20103513189027
Title:Transitional and steady mode-locking evolution of dissipative solitons
Authors:Wang, Leiran (1); Liu, Xueming (1); Gong, Yongkang (1); Mao, Dong (1); Li, Xiaohui (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:49
Issue:14
Issue date:May 10, 2010
Publication year:2010
Pages:2665-2669
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 have experimentally observed the transitional and steady mode-locking (ML) evolution of dissipative solitons (DSs). It is found that pulses with different energies can coexist in the cavity during the evolution. When an additional pulse is generated from the laser, it initially exhibits weak intensity, and then gradually develops into the fully grown pulse with the increase of pump power. Meanwhile, the spectral profile of pulses is modulated at its top. The dynamic processes occur stage by stage, and can be regarded as the transitional states between the two nearby steady ML states. To our best knowledge, this is the first report on experimental observations for the detailed dynamic evolutions of pulse shaping in a DS laser. © 2010 Optical Society of America.
Number of references:18
Main heading:Pulsed laser applications
Controlled terms:Biology - Pumping (laser) - Solitons
Uncontrolled terms:Dissipative solitons - Dynamic evolution - Dynamic process - Experimental observation - Pulse-shaping - Pump power - Spectral profile - Steady modes - Transitional state - Weak intensity
Classification code:461.9 Biology - 744.1 Lasers, General - 744.9 Laser Applications - 931.3 Atomic and Molecular Physics
DOI:10.1364/AO.49.002665
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 8>
Accession number:20102012937752
Title:Evolution of dual-wavelength solitons in an erbium-doped fiber laser
Authors:Mao, D. (1); Liu, X.M. (1); Wang, L.R. (1); Li, X.H. (1); Lu, H. (1); Sun, H.B. (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:Laser Physics
Abbreviated source title:Laser Phys.
Volume:20
Issue:4
Issue date:April 2010
Publication year:2010
Pages:847-854
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 experimental observations of dual-wavelength solitons in a passively mode-locked erbium-doped fiber laser. Two kinds of dual-wavelength solitons with different spectrum shapes are achieved. One is exhibited to have spectrum sidebands and the other one is shown to have the smooth profile without any sideband. The mode-locking mechanism at different central wavelengths is analyzed. Experimental results suggest that the pump level together with the cavity filtering effect play key roles in the generation of the dual-wavelength solitons. © 2010 Pleiades Publishing, Ltd.
Number of references:18
Main heading:Mode-locked fiber lasers
Controlled terms:Erbium - Fiber lasers - Solitons
Uncontrolled terms:Central wavelength - Dual-wavelength - Erbium doped fiber laser - Experimental observation - Filtering effects - Modelocking - Passively mode-locked - Spectrum shape
Classification code:547.2 Rare Earth Metals - 741.1.2 Fiber Optics - 744.1 Lasers, General - 744.4 Solid State Lasers - 921.1 Algebra - 931.3 Atomic and Molecular Physics
DOI:10.1134/S1054660X10070236
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 9>
Accession number:20110113551045
Title:Comprehensive performance analysis of popular odd-symmetric phase masks used for wave-front coded imaging system
Authors:Zhao, Hui (1); Li, Yingcai (1)
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Science, No. 17 Xinxi Road, Xi'an, 710119, China
Corresponding author:Zhao, H.(zhaohui1981.zju@gmail.com)
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:7849
Monograph title:Optical Design and Testing IV
Issue date:2010
Publication year:2010
Article number:78491B
Language:English
ISSN:0277786X
CODEN:PSISDG
ISBN-13:9780819483799
Document type:Conference article (CA)
Conference name:Optical Design and Testing IV
Conference date:October 18, 2010 - October 20, 2010
Conference location:Beijing, China
Conference code:83316
Sponsor:The Society of Photo-Optical Instrumentation Engineers (SPIE); Chinese Optical Society (COS)
Publisher:SPIE, P.O. Box 10, Bellingham, WA 98227-0010, United States
Abstract:Wave-front coding was proposed in 1995 and is a powerful system-level technique used to extend the depth of field (DOF) of incoherent imaging system. The key to wave-front coding lies in the design of suitable phase masks which make the imaging system insensitive to defocus and defocus-related aberrations. Among all phase masks used for wave-front coding, odd-symmetric types are dominant and can provide larger extended DOF. With the acceptable degradation of MTF (Modulation Transfer Function) taken as a criterion, optimization procedure is used to obtain the optimum parameters for popular odd-symmetric phase masks and then a comprehensive analysis is carried out by considering four factors: DOF extension capability, sensitiveness to elementary aberrations, PSF (Point Spread Function) shifting effect and restorability of intermediate blurred images. To the best of our knowledge, the comprehensive analysis on performance of popular odd-symmetric phase masks, as done in this manuscript, has not been made before. So, the work reported here could be considered as a complementary part to the field of wave-front coding. © 2010 Copyright SPIE - The International Society for Optical Engineering.
Number of references:10
Main heading:Wavefronts
Controlled terms:Imaging systems - Optical design - Optical transfer function
Uncontrolled terms:All phase - Blurred image - Comprehensive analysis - Comprehensive performance - Defocus - Depth of field - Extension capabilities - Incoherent imaging - Modulation transfer function - Optimization procedures - Optimum parameters - Phase masks - Point-Spread function - Powerful systems - Restorability - Symmetric phase
Classification code:741 Light, Optics and Optical Devices - 741.1 Light/Optics - 746 Imaging Techniques
DOI:10.1117/12.868287
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 10>
Accession number:20103013104363
Title:High-speed data acquisition and processing system for multi-spectral imagery system
Authors:Wang, Cailing (1); Liu, Xuebin (2); Chen, Xiaolai (2); Hu, Bingliang (2); Li, Yun (2)
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics of CAS, Graduate School of the Chinese Academy of Science, Xi'an, China; (2) Xi'an Institute of Optics and Precision Mechanics of CAS, Xi'an, China
Corresponding author:Wang, C.(azering@opt.ac.c)
Source title:2010 Symposium on Photonics and Optoelectronic, SOPO 2010 - Proceedings
Abbreviated source title:Symp. Photonics Optoelectron., SOPO - Proc.
Monograph title:2010 Symposium on Photonics and Optoelectronic, SOPO 2010 - Proceedings
Issue date:2010
Publication year:2010
Article number:5504471
Language:English
ISBN-13:9781424449644
Document type:Conference article (CA)
Conference name:International Symposium on Photonics and Optoelectronics, SOPO 2010
Conference date:June 19, 2010 - June 21, 2010
Conference location:Chengdu, China
Conference code:81219
Sponsor:IEEE Photonics Society; Sichuan University; Chongqing University; University of Electronic Science and Technology of China; Chinese Quantum Electronics and Optoelectronics Society (CQOES)
Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States
Abstract:This paper describes a high-speed data acquisition and processing system which has been successfully operated on the multi-spectral imagery system. The system, which is based on PCI-E interface, can collect data as 280MBps and store over 60 minutes per times without losing frames. This study discusses several main problems during hardware design and software design. ©2010 IEEE.
Number of references:3
Main heading:Data processing
Controlled terms:Partial discharges - Remote sensing - Software design - Speed
Uncontrolled terms:Hardware design - High speed acquisition - High speed data acquisition - Multi-spectral imagery - Real time acquisition
Classification code:701.1 Electricity: Basic Concepts and Phenomena - 723.1 Computer Programming - 723.2 Data Processing and Image Processing - 723.5 Computer Applications - 731.1 Control Systems - 931.1 Mechanics
DOI:10.1109/SOPO.2010.5504471
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 11>
Accession number:20111213768122
Title:Study of the radiation calibration of TDI-CCD spatial stereo camera
Authors:Ren, Huanhuan (1); Ruan, Ping (1); He, Jianwei (1); Xue, Bin (1); Qiao, Weidong (1); Liang, Shitong (1); Wang, Hongwei (1)
Author affiliation:(1) Space Optics Laboratory, 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:Ren, H.(rhh198513@163.com)
Source title:Guangxue Xuebao/Acta Optica Sinica
Abbreviated source title:Guangxue Xuebao
Volume:30
Issue:12
Issue date:December 2010
Publication year:2010
Pages:3476-3480
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 principle of the radiation calibration of TDI-CCD spatial stereo camera is introduced in detail in three aspects of dark current data, relative calibration and absolute calibration. Then the process of the radiation calibration is briefly described. Finally the data measured during the calibration is disposed and analyzed. How the dark current is eliminated effectively and the method of the relative calibration in each condition is mainly illustrated. In order to effectively eliminate the dark current, a part of the direct current, two methods are compared. In the process of relative calibration, the calibration matrices are calculated after analyzing a huge number of data. And in the tolerance of the system, the most suitable matrix to any condition is optimized among many matrices. It is proved that the average deviation of any calibrated image is usually between 0.08 and 1.5 in gray value, and the maximum error is 2.80%. So the complexity of the calibrating process is decreased in the practical application, and the image processing in the later stage of the work is also simplified.
Number of references:10
Main heading:Calibration
Controlled terms:Cameras - CCD cameras - Dark currents - Digital image storage - Image processing - Imaging systems - Matrix algebra
Uncontrolled terms:Absolute calibration - Average deviation - Calibrating process - Direct current - Gray value - matrix - Maximum error - Number of datum - Radiation calibration - Relative calibration - Relative calibrations - Spatial stereo camera - Stereo cameras - TDI-CCD
Classification code:943 Mechanical and Miscellaneous Measuring Instruments - 942 Electric and Electronic Measuring Instruments - 941 Acoustical and Optical Measuring Instruments - 921.1 Algebra - 944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments - 746 Imaging Techniques - 741.3 Optical Devices and Systems - 741 Light, Optics and Optical Devices - 701.1 Electricity: Basic Concepts and Phenomena - 742.2 Photographic Equipment
DOI:10.3788/AOS20103012.3476
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 12>
Accession number:20100712719513
Title:Hysteresis phenomena and multipulse formation of a dissipative system in a passively mode-locked fiber laser
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.
Source title:Physical Review A - Atomic, Molecular, and Optical Physics
Abbreviated source title:Phys Rev A
Volume:81
Issue:2
Issue date:February 12, 2010
Publication year:2010
Article number:023811
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:A model describing the dissipative soliton evolution in a passively mode-locked fiber laser is proposed by using the nonlinear polarization rotation technique and the spectral filtering effect. It is numerically found that the laser alternately evolves on the stable and unstable mode-locking states as a function of the pump strength. Numerical simulations show that the passively mode-locked fiber lasers with large net normal dispersion can operate on multiple pulse behavior and hysteresis phenomena. The experimental observations confirm the theoretical predictions. The theoretical and experimental results achieved are qualitatively distinct from those observed in net-anomalous- dispersion conventional-soliton fiber lasers. © 2010 The American Physical Society.
Number of references:28
Main heading:Mode-locked fiber lasers
Controlled terms:Computer simulation - Dispersions - Fiber lasers - Fibers - Hysteresis - Laser mode locking - Pumping (laser) - Solitons
Uncontrolled terms:Dissipative solitons - Dissipative systems - Experimental observation - Hysteresis phenomenon - Multiple pulse behavior - Multipulses - Nonlinear polarization rotation - Normal dispersion - Numerical simulation - Passively mode-locked - Spectral filtering - Theoretical prediction - Unstable modes
Classification code:961 Systems Science - 817 Plastics and Other Polymers: Products and Applications - 819.4 Fiber Products - 921.1 Algebra - 931.2 Physical Properties of Gases, Liquids and Solids - 931.3 Atomic and Molecular Physics - 951 Materials Science - 812 Ceramics, Refractories and Glass - 744.4 Solid State Lasers - 744.1 Lasers, General - 741.1.2 Fiber Optics - 723.5 Computer Applications - 701.2 Magnetism: Basic Concepts and Phenomena - 801.3 Colloid Chemistry
DOI:10.1103/PhysRevA.81.023811
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 13>
Accession number:20105013489841
Title:Design of stray light test facility based on optical system of star-simulator
Authors:Feng, Guangjun (1); Ma, Zhen (1); Li, Yingcai (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:Feng, G.(Feng520_jj@126.com)
Source title:Zhongguo Jiguang/Chinese Journal of Lasers
Abbreviated source title:Zhongguo Jiguang
Volume:37
Issue:SUPPL. 1
Issue date:November 2010
Publication year:2010
Pages:105-109
Language:Chinese
ISSN:02587025
CODEN:ZHJIDO
Document type:Journal article (JA)
Publisher:Science Press, 18,Shuangqing Street,Haidian, Beijing, 100085, China
Abstract:The detection ability of high resolution photoelectric detection system, to a great extent, is limited by the stray light. Since various factors influence stray light of optical system, its stray light must be tested in order to control the final indicators, such as point source transmittance (PST). On the base of star-simulator with huge dynamic range, the stray light test facility is designed, and the problem that dynamic range of single detector cannot cover 10<sup>8</sup> is solved. Under a reasonable signal-to-noise ratio, the test range of stray light PST with electron-multiplying CCD (EMCCD) is analyzed. Through analysis, the range of the stray light PST can reach 10<sup>-2</sup>-10<sup>-8</sup>, and meet the requirement for testing high resolution photoelectric detection system's PST.
Number of references:10
Main heading:Stray light
Controlled terms:Detectors - Optical devices - Optical instruments - Optical systems - Photoelectricity - Signal to noise ratio - Simulators - Test facilities - Testing
Uncontrolled terms:Detection ability - Dynamic range - Electron-multiplying CCD - High resolution - Photoelectric detection - Point sources - Star simulator - Test range
Classification code:741.3 Optical Devices and Systems - 741.1 Light/Optics - 716.1 Information Theory and Signal Processing - 914 Safety Engineering - 671 Naval Architecture - 423.2 Non Mechanical Properties of Building Materials: Test Methods - 402.1 Industrial and Agricultural Buildings - 621 Nuclear Reactors
DOI:10.3788/CJL20103701.0105
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 14>
Accession number:20104613383180
Title:Second-harmonic generation from a periodic array of noncentrosymmetric nanoholes
Authors:Zhou, Renlong (1); Lu, Hua (2); Liu, Xueming (2); Gong, Yongkang (2); Mao, Dong (2)
Author affiliation:(1) College of Physics, Hunan University of Science and Technology, Xiangtan 411201, 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:Liu, X.(liuxm@opt.ac.cn)
Source title:Journal of the Optical Society of America B: Optical Physics
Abbreviated source title:J Opt Soc Am B
Volume:27
Issue:11
Issue date:November 2010
Publication year:2010
Pages:2405-2409
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:Second-harmonic generation (SHG) through a proposed thin gold film with a periodic array of subwavelength nanoholes is numerically investigated. By using a recently developed microscopic classical theory and a fullvectorial three-dimensional finite-difference time-domain method, we demonstrate that the mirror symmetry of nanoholes in one direction restricts the polarization state of second-harmonic emission in the same direction. Numerical results show that the second-order nonlinear susceptibility x<sup>(2)</sup><inf>yyy</inf> dominates in the process of SHG when the nanoholes possess mirror symmetry in the x-axis direction. It is also found that the surface plasmon resonance can result in the enhancement of SHG from metallic nanoholes. © 2010 Optical Society of America.
Number of references:37
Main heading:Harmonic analysis
Controlled terms:Finite difference time domain method - Harmonic generation - Mirrors - Surface plasmon resonance
Uncontrolled terms:Classical theory - Mirror symmetry - Nanoholes - Non-centrosymmetric - Numerical results - Periodic arrays - Polarization state - Second harmonic generation - Second-harmonic emission - Second-order nonlinear susceptibility - Sub-wavelength - Thin gold film
Classification code:711 Electromagnetic Waves - 741.3 Optical Devices and Systems - 751.1 Acoustic Waves - 921 Mathematics - 921.6 Numerical Methods
DOI:10.1364/JOSAB.27.002405
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 15>
Accession number:20104613374233
Title:A trace acquisition method of small moving target
Authors:Ma, Junyong (1); Wen, Desheng (1); Yang, Shaodong (1)
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, China
Corresponding author:Ma, J.
Source title:ICACTE 2010 - 2010 3rd International Conference on Advanced Computer Theory and Engineering, Proceedings
Abbreviated source title:ICACTE - Int. Conf. Adv. Comput. Theory Eng., Proc.
Volume:5
Monograph title:ICACTE 2010 - 2010 3rd International Conference on Advanced Computer Theory and Engineering, Proceedings
Issue date:2010
Publication year:2010
Pages:V5450-V5454
Article number:5579516
Language:English
ISBN-13:9781424465408
Document type:Conference article (CA)
Conference name:2010 3rd International Conference on Advanced Computer Theory and Engineering, ICACTE 2010
Conference date:August 20, 2010 - August 22, 2010
Conference location:Chengdu, China
Conference code:82180
Sponsor:Int. Assoc. Comput. Sci. Inf. Technol. (IACSIT)
Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States
Abstract:This paper presents a new method for detecting small moving targets from consecutive image sequences. Image sequences are processed to detect targets, assuming that the data samples have been spatially registered. Firstly, Maximum Value Projection and normalization are utilized to reduce the data samples and reject the background clutter. Then, targets are detected using connected component analysis. At last, the velocities of the targets are estimated by centroid localization and least-square regression. A sliding neighborhood operation is performed before target detection. It can greatly reduce the computation while preserving as much target information as possible. The experimental results indicate that this method can efficiently detect the small moving targets and accurately track their traces. Both centroid locating precision and tracking accuracy are within a pixel. © 2010 IEEE.
Number of references:16
Main heading:Image processing
Controlled terms:Target tracking
Uncontrolled terms:Background clutter - Centroid localization - Connected component analysis - Consecutive images - Data sample - Detection - Image sequence - Least square regression - Maximum value projections - Small moving target - Target detection - Target information - Trace acquisition - Tracking accuracy
Classification code:716.2 Radar Systems and Equipment - 741 Light, Optics and Optical Devices
DOI:10.1109/ICACTE.2010.5579516
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 16>
Accession number:20100312640933
Title:Spectrum recovery method for interferometric data
Authors:Lü, Qun-Bo (1); Yao, Tao (1); Xiangli, Bin (1); Huang, Min (1)
Author affiliation:(1) 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, Chinese Academy of Sciences, Beijing 100039, China
Corresponding author:Yao, T.(bhtyao@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:30
Issue:1
Issue date:January 2010
Publication year:2010
Pages:114-117
Language:Chinese
ISSN:10000593
CODEN:GYGFED
Document type:Journal article (JA)
Publisher:Science Press, 18,Shuangqing Street,Haidian, Beijing, 100085, China
Abstract:The interferometric data acquired by Fourier transform spectrometer was a betweenness which couldn't be used directly. For the successful application of the interferometric data, spectrum recovery processing must be adopted. The conventional method based on inverse Fourier transform was frequently used for spectrum recovery. According to the principle analysis of the interferometric data, the mixing model was induced, and the spectrum recovery method based on the mixing model of the interferometric data was presented. Finally, the computer simulation for these two methods mentioned above was implemented, and the recovered spectra were compared with the standard spectrum. The simulation results indicated that the spectral precision of the new method was better than the conventional method, which provided a new scheme for spectrum recovery.
Number of references:21
Main heading:Recovery
Controlled terms:Computer simulation - Fourier transforms - Interferometry - Mixing
Uncontrolled terms:Betweenness - Conventional methods - Fourier transform spectrometers - Interferometric data - Inverse Fourier transforms - Mixing model - Mixing models - Principle analysis - Simulation result
Classification code:531 Metallurgy and Metallography - 622.5 Radioactive Wastes - 723.5 Computer Applications - 802.3 Chemical Operations - 921.3 Mathematical Transformations - 941.4 Optical Variables Measurements
DOI:10.3964/j.issn.1000-0593(2010)01-0114-04
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 17>
Accession number:20102112958592
Title:Growth and properties of conductive substrates of ultraviolet photocathode with high resistance
Authors:Zhao, Feifei (1); Zhao, Baosheng (1); Wei, Yonglin (1); Zhang, Xinghua (1); Sai, Xiaofeng (1); Zou, 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, Shaanxi 710119, China; (2) Graduate University, Chinese Academy of Sciences, Beijing 100049, China
Corresponding author:Zhao, F.(feifei@opt.ac.cn)
Source title:Guangxue Xuebao/Acta Optica Sinica
Abbreviated source title:Guangxue Xuebao
Volume:30
Issue:4
Issue date:April 2010
Publication year:2010
Pages:1211-1216
Language:Chinese
ISSN:02532239
CODEN:GUXUDC
Document type:Journal article (JA)
Publisher:Chinese Optical Society, P.O. Box 80, Xi'an, 710068, China
Abstract:Tin-doped indium oxide (ITO) conductive thin film is prepared on MgF<inf>2</inf> substrate by electron beam evaporation. The effect of oxygen and annealing on the sheet resistance and ultraviolet (UV) transmittance of ITO film is investigated. Furthermore, the properties of ITO film are compared with conventional conductive film substrates Au and Cr. The surface morphological image, sheet resistance, microstructure and transmittance curves in the wave band of 190~800 nm are investigated by optical microscope (OM), four-probe method, high resistance meter, X-ray diffractomer (XRD) and spectrophotometer. Variation range of transmittance is acquired in the wave band of 200~400 nm when the sheet resistance reaches 10<sup>7</sup> Ω. The results indicate that the sheet resistance of thin film prepared with oxygen is higher than that without oxygen; after annealing the sheet resistance of thin film decreases and the microstructure changes from amorphous to polycrystalline. Compared to Au and Cr, the average transmittance of ITO film with the same sheet resistance of 10<sup>7</sup> Ω or so, which is prepared with oxygen and annealing, is 10% higher in the wave band of 200~400 nm.
Number of references:15
Main heading:ITO glass
Controlled terms:Amorphous films - Annealing - Chromium - Conductive films - Deposition - Electric properties - Electric resistance - Electron beams - Film preparation - Gold - Image intensifiers (electron tube) - Image intensifiers (solid state) - Imaging systems - Indium - Indium compounds - Microstructure - Optical properties - Oxygen - Sheet resistance - Substrates - Thin films - Tin - Titanium compounds - Vacuum - Vacuum deposition
Uncontrolled terms:Conductive substrates - Effect of oxygen - Electron beam evaporation - Four-probe methods - High resistance - Image intensifiers - ITO films - Microstructure changes - Morphological images - Optical and electrical properties - Optical microscopes - Polycrystalline - Thin films optics - Tin doped indium oxide - Transmittance curves - Ultra-violet - Wavebands - XRD
Classification code:804.1 Organic Compounds - 804 Chemical Products Generally - 802.3 Chemical Operations - 804.2 Inorganic Compounds - 801.4 Physical Chemistry - 746 Imaging Techniques - 741.1 Light/Optics - 801 Chemistry - 812.3 Glass - 942.2 Electric Variables Measurements - 933.2 Amorphous Solids - 933 Solid State Physics - 951 Materials Science - 932 High Energy Physics; Nuclear Physics; Plasma Physics - 931.2 Physical Properties of Gases, Liquids and Solids - 813.1 Coating Techniques - 931.3 Atomic and Molecular Physics - 741 Light, Optics and Optical Devices - 546.2 Tin and Alloys - 543.1 Chromium and Alloys - 539.3 Metal Plating - 547.1 Precious Metals - 537.1 Heat Treatment Processes - 461 Bioengineering and Biology - 423 Non Mechanical Properties and Tests of Building Materials - 531.2 Metallography - 549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals - 714.2 Semiconductor Devices and Integrated Circuits - 714.1 Electron Tubes - 712.1 Semiconducting Materials - 723.2 Data Processing and Image Processing - 708.2 Conducting Materials - 633.1 Vacuum Applications - 633 Vacuum Technology - 701.1 Electricity: Basic Concepts and Phenomena
DOI:10.3788/AOS20103004.1211
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 18>
Accession number:20102513031005
Title:Techniques for pixel response nonuniformity correction of CCD in interferential imaging spectrometer
Authors:Yao, Tao (1); Yin, Shi-Min (2); Xiangli, Bin (3); Lü, Qun-Bo (4)
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710068, China; (2) First Field of Trial and Training Air Base of the Chinese People's Liberation Army, Jiuquan 735018, China; (3) Academy of Optoelectronics, Chinese Academy of Sciences, Beijing 100190, China; (4) Graduate University, Chinese Academy of Sciences, Beijing 100049, China
Corresponding author:Yin, S.-M.(yinshimin@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:30
Issue:6
Issue date:June 2010
Publication year:2010
Pages:1712-1716
Language:Chinese
ISSN:10000593
CODEN:GYGFED
Document type:Journal article (JA)
Publisher:Science Press, 18,Shuangqing Street,Haidian, Beijing, 100085, China
Abstract:Based on in-depth analysis of the relative radiation scaling theorem and acquired scaling data of pixel response nonuniformity correction of CCD (charge-coupled device) in spaceborne visible interferential imaging spectrometer, a pixel response nonuniformity correction method of CCD adapted to visible and infrared interferential imaging spectrometer system was studied out, and it availably resolved the engineering technical problem of nonuniformity correction in detector arrays for interferential imaging spectrometer system. The quantitative impact of CCD nonuniformity on interferogram correction and recovery spectrum accuracy was given simultaneously. Furthermore, an improved method with calibration and nonuniformity correction done after the instrument is successfully assembled was proposed. The method can save time and manpower. It can correct nonuniformity caused by other reasons in spectrometer system besides CCD itself's nonuniformity, can acquire recalibration data when working environment is changed, and can also more effectively improve the nonuniformity calibration accuracy of interferential imaging spectrometer system.
Number of references:20
Main heading:Spectrometry
Controlled terms:Calibration - Pixels - Spectrometers
Uncontrolled terms:Detector arrays - Imaging spectrometers - Improved methods - In-depth analysis - Interferograms - Nonuniformity - Nonuniformity calibration - Nonuniformity Correction - Recalibrations - Scaling theorem - Space-borne - Technical problem - Two-point calibration - Working environment
Classification code:943 Mechanical and Miscellaneous Measuring Instruments - 942 Electric and Electronic Measuring Instruments - 941.4 Optical Variables Measurements - 941.3 Optical Instruments - 941 Acoustical and Optical Measuring Instruments - 944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments - 902.2 Codes and Standards - 742.2 Photographic Equipment - 741.3 Optical Devices and Systems - 723.5 Computer Applications - 722.2 Computer Peripheral Equipment - 801 Chemistry
DOI:10.3964/j.issn.1000-0593(2010)06-1712-05
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 19>
Accession number:20104713405328
Title:Linear and nonlinear optical properties of the PbSe quantum dots doped germano-silica glass optical fiber
Authors:Watekar, Pramod R. (1); Ju, Seongmin (2); Lin, Aoxiang (3); Kim, Myoung Jin (1); Lee, Byeong Ha (1); Han, Won-Taek (1)
Author affiliation:(1) Department of Information and Communications, Gwangju Institute of Science and Technology Oryong-Dong, Buk-Gu, Gwangju, 500-712, Korea, Republic of; (2) Graduate Program of Photon Science and Technology, Gwangju Institute of Science and Technology Oryong-Dong, Buk-Gu, Gwangju, 500-712, Korea, Republic of; (3) Lehigh University, Bethlehem, PA 18015, United States; (4) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Xi'an, China
Corresponding author:Han, W.-T.(wthan@gist.ac.kr)
Source title:Journal of Non-Crystalline Solids
Abbreviated source title:J Non Cryst Solids
Volume:356
Issue:44-49
Issue date:October 1, 2010
Publication year:2010
Pages:2384-2388
Language:English
ISSN:00223093
CODEN:JNCSBJ
Document type:Conference article (CA)
Publisher:Elsevier, P.O. Box 211, Amsterdam, 1000 AE, Netherlands
Abstract:We report development of a new fiber doped with PbSe quantum dots for nonlinear optical applications. PbSe quantum dots related absorption peaks were obtained at 1021, 1093 and 1351 nm. The resonant optical nonlinearity and attenuation at 1500 nm were measured to be 9.4 × 10<sup>-</sup> <sup>16</sup> m<sup>2</sup>/W and 0.01 dB/m, respectively. The emission around 1540 nm was observed upon near resonant pumping at 1064 nm. © 2010 Elsevier B.V. All rights reserved.
Number of references:17
Main heading:Optical properties
Controlled terms:Fiber optics - Fibers - Nonlinear optics - Optical fibers - Semiconductor quantum dots - Silica
Uncontrolled terms:1064 nm - Absorption peaks - Non-linear optical properties - Nonlinear optical applications - Optical nonlinearity - Quantum Dot - Quantum dots - Resonant pumping - Silica glass
Classification code:714.2 Semiconductor Devices and Integrated Circuits - 741 Light, Optics and Optical Devices - 812 Ceramics, Refractories and Glass - 817 Plastics and Other Polymers: Products and Applications
DOI:10.1016/j.jnoncrysol.2010.02.012
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 20>
Accession number:20104513370072
Title:Long-cavity passively mode-locked fiber ring laser with high-energy rectangular-shape pulses in anomalous dispersion regime
Authors:Li, Xiaohui (1); Liu, Xueming (1); Hu, Xiaohong (1); Wang, Leirang (1); Lu, Hua (1); Wang, Yishan (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
Corresponding author:Liu, X.(liuxm@opt.ac.cn)
Source title:Optics Letters
Abbreviated source title:Opt. Lett.
Volume:35
Issue:19
Issue date:October 1, 2010
Publication year:2010
Pages:3249-3251
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 report on a long-cavity passively mode-locked fiber laser in the anomalous dispersion regime. The nonlinear polarization rotation technique is employed to achieve mode locking. The output pulse from the fiber laser has a rectangular shape and a corresponding Gaussian-shape spectral profile. Stable mode-locked pulses at a repetition rate of 278 kHz with single pulse energy as high as 715 nJ are obtained under equal bidirectional pumping power of 500 mW in cavity. The experimental results demonstrate that the passively mode-locked fiber laser operating in the anomalous regime can also realize a high-energy pulse, which is different from the conventional low-energy soliton pulse. © 2010 Optical Society of America.
Number of references:19
Main heading:Mode-locked fiber lasers
Controlled terms:Dispersions - Fiber lasers - Fibers - High energy physics - Pulse repetition rate - Q switched lasers - Ring lasers - Solitons
Uncontrolled terms:Anomalous dispersion - Anomalous regimes - Bidirectional pumping - Fiber-ring lasers - Gaussians - High energy - High energy pulse - Low energies - Modelocking - Nonlinear polarization rotation - Output pulse - Passively mode-locked - Rectangular shapes - Repetition rate - Single pulse energy - Soliton pulse - Spectral profile - Stable modes
Classification code:744 Lasers - 812 Ceramics, Refractories and Glass - 817 Plastics and Other Polymers: Products and Applications - 931.3 Atomic and Molecular Physics - 932.1 High Energy Physics - 951 Materials Science
DOI:10.1364/OL.35.003249
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 21>
Accession number:20104113286209
Title:Measurement of ultralow loss in antireflection mirror
Authors:Chen, Xinwei (1); Qiu, Fusheng (3); Zhang, Hongxia (1); Jia, Dagong (1); Liu, Tiegen (1); Zhang, Yimo (1)
Author affiliation:(1) College of Precision Instrument and Opto-electronics Engineering, Tianjin University, Tianjin 300072, China; (2) Key Laboratory of Optoelectronics Information Technical Science, EMC, Tianjin 300072, China; (3) Department of Applied Physics, Xi'An Jiaotong University, Xi'an 710049, China
Corresponding author:Chen, X.(cxw553@tju.edu.cn)
Source title:Review of Scientific Instruments
Abbreviated source title:Rev. Sci. Instrum.
Volume:81
Issue:9
Issue date:September 2010
Publication year:2010
Article number:093104
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:A new method based on the double-beam polarization balance bridge technique for measuring the ultralow total loss, including absorption, scattering, and reflection in ultrahigh antireflection mirror is presented. By rotating the polarizer before and after the insertion of a mirror into one beam out of the Wollaston prism to adjust the intensities of the two beams to be equal, the total loss can be obtained by recording the angle variation of the polarizer. The factors affecting the measurement precision of the technique and the main sources of errors are investigated in detail. The total loss measurement precision of the mirror is 10 ppm and the zero drift is 10 ppm at 632.8 nm. © 2010 American Institute of Physics.
Number of references:9
Main heading:Mirrors
Controlled terms:Measurement errors - Optical instruments
Uncontrolled terms:Angle variation - Anti-reflection - Before and after - Double-beam - Measurement precision - Total loss - Two beams - Wollaston prism - Zero drift
Classification code:741.3 Optical Devices and Systems - 922 Statistical Methods
DOI:10.1063/1.3484189
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 22>
Accession number:20102513030955
Title:Mid-infrared emission and multiphonon relaxation in Tm<sup>3+</sup>-doped Ge-Ga-Se glasses
Authors:Zhang, Peng-Jun (1); Dai, Shi-Xun (1); Le, Fang-Da (1); Peng, Bo (2); Xu, Tie-Feng (1); Nie, Qiu-Hua (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 Academy of Sciences, Xi'an 710119, China; (3) Laboratoire de Verres et Ceramiques, Université de Rennes I, Rennes 35042, France
Corresponding author:Dai, S.-X.(daishixun@nbu.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:30
Issue:6
Issue date:June 2010
Publication year:2010
Pages:1464-1468
Language:Chinese
ISSN:10000593
CODEN:GYGFED
Document type:Journal article (JA)
Publisher:Science Press, 18,Shuangqing Street,Haidian, Beijing, 100085, China
Abstract:A series of chalcogenide glasses based on the composition Ge<inf>30</inf>Ga<inf>5</inf>Se<inf>65</inf> (at.%) doped with the different Tm<sup>3+</sup> ions were synthesized by melt-quenching technique. The refractive indexes, Raman spectra, absorption spectra, near-and mid-infrared fluorescence, and lifetimes of glass samples under 800 nm laser excitation were measured. The intensity parameters Ω<inf>i</inf>(i=2, 4, 6), transition probabilities, branching ratios and radiative lifetimes have been predicted for Tm<sup>3+</sup> ions in samples by using the Judd-Ofelt theory. The near-infrared emission spectra at 1.23, 1.48 and 1.8 μm were observed and their quantum efficiencies were evaluated respectively in glass doped with 1 Wt% Tm<sup>3+</sup>-ions under 800 nm excitation. The mid-infrared fluorescence spectra were investigated with the different Tm<sup>3+</sup> ion concentration under 800 nm excitation. The multiphonon relaxation rate of Tm<sup>3+</sup>: <sup>3</sup>H<inf>5</inf> &rarr <sup>3</sup>F<inf>4</inf> by the measured and calculated lifetimes, and the relative parameters of W(0) and α in Ge<inf>30</inf>Ga<inf>5</inf>Se<inf>65</inf> glass were evaluated. Results show that the multiphonon relaxation rates were significantly lower than other glasses due to the lower maximum phonon energy, so the selenide glasses are promising as host materials for doping by rare earth ions and for preparation of mid-infrared optical elements.
Number of references:20
Main heading:Infrared spectroscopy
Controlled terms:Doping (additives) - Emission spectroscopy - Fluorescence - Germanium - Glass - Glass lasers - Infrared devices - Infrared lasers - Laser excitation - Metal ions - Raman spectroscopy - Refractive index
Uncontrolled terms:Branching ratio - Chalcogenide glass - Glass samples - Host materials - Intensity parameters - Ion concentrations - Judd Ofelt theory - Melt quenching techniques - Mid-infrared emission - Midinfrared - Multiphonon relaxations - Near-infrared emissions - Optical elements - Phonon energies - Radiative lifetime - Raman spectra - Rare earth ions - Selenide glass - Transition probabilities
Classification code:744.9 Laser Applications - 801 Chemistry - 801.4 Physical Chemistry - 941.4 Optical Variables Measurements - 804 Chemical Products Generally - 931.2 Physical Properties of Gases, Liquids and Solids - 931.3 Atomic and Molecular Physics - 812.3 Glass - 744.1 Lasers, General - 741.3 Optical Devices and Systems - 531.1 Metallurgy - 533 Ore Treatment and Metal Refining - 549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals - 712.1 Semiconducting Materials - 714.2 Semiconductor Devices and Integrated Circuits - 741.1 Light/Optics
DOI:10.3964/j.issn.1000-0593(2010)06-1464-05
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 23>
Accession number:20111813958808
Title:Design and optimization of low-dispersion high-nonlinear photonic crystal fiber for four-wave mixing
Authors:Zhang, Yani (1)
Author affiliation:(1) Department of Physics and Information Technology, Baoji College of Arts and Science, Baoji, Shaanxi 721007, 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
Corresponding author:Zhang, Y.(zhangyn@opt.ac.cn)
Source title:Guangxue Xuebao/Acta Optica Sinica
Abbreviated source title:Guangxue Xuebao
Volume:30
Issue:SUPPL.
Issue date:December 2010
Publication year:2010
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:A novel type of photonic crystal fiber (PCF) with low dispersion and high nonlinearity for four-wave mixing is proposed. This kind of fiber is composed of a solid silica core and a cladding with squeezed-hexagonal-lattice elliptical air-hole along the fiber length. Its dispersion and nonlinearity coefficient are investigated simultaneously by using full vectorial finite element method. Numerical results show that proposed highly-nonlinear low-dispersion fiber has the total dispersion as low as ±2.5 ps/(nm·km) over ultra-broad wavelength range from 1.43 μm to 1.8 μm by adjusting the structure parameters of photonic crystal fiber, such as the hexagonal squeezing ratio, the relative air hole size and the air hole ellipticity, and the corresponding nonlinearity coefficient is about 150 (W·km)<sup>-1</sup> at 1.55 μm. The proposed PCF with low ultra-flattened dispersion, high nonlinearity and high birefringence can have important applications on the four-wave mixing.
Number of references:28
Main heading:Holey fibers
Controlled terms:Crystal structure - Crystal whiskers - Design - Dispersion (waves) - Dispersions - Fibers - Finite element method - Four wave mixing - Laser pulses - Mixing - Optical fiber fabrication - Photonic crystals - Silica
Uncontrolled terms:Air holes - Design and optimization - Fiber characterizations - Fiber design and fabrication - Fiber length - Flattened dispersion - High birefringence - High nonlinearity - Nonlinear photonic crystal fiber - Nonlinearity coefficient - Numerical results - Solid silica - Squeezing ratio - Structure parameter - Vectorial finite element methods - Wavelength ranges
Classification code:951 Materials Science - 933.1 Crystalline Solids - 921.6 Numerical Methods - 817 Plastics and Other Polymers: Products and Applications - 812.3 Glass - 812 Ceramics, Refractories and Glass - 802.3 Chemical Operations - 801.4 Physical Chemistry - 744.1 Lasers, General - 711.1 Electromagnetic Waves in Different Media - 408 Structural Design
DOI:10.3788/AOS201030.s100203
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 24>
Accession number:20104713417592
Title:An optimization detection angle for polarization measurement
Authors:Jian, Xiaohua (1); Zhang, Chunmin (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, 710068, China
Corresponding author:Jian, X.(zcm@mail.xjtu.edu.cn)
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:7807
Monograph title:Earth Observing Systems XV
Issue date:2010
Publication year:2010
Article number:780717
Language:English
ISSN:0277786X
CODEN:PSISDG
ISBN-13:9780819483034
Document type:Conference article (CA)
Conference name:Earth Observing Systems XV
Conference date:August 3, 2010 - August 5, 2010
Conference location:San Diego, CA, United states
Conference code:82476
Sponsor:The Society of Photo-Optical Instrumentation Engineers (SPIE)
Publisher:SPIE, P.O. Box 10, Bellingham, WA 98227-0010, United States
Abstract:Based on the basic theory of polarization measurement, this paper compares the differences between two detection angles: 45° and 60°, which are generally used in rotating polarization elements method for polarization measurement. Sequentially, an optimization detection angle is present, and it provides a better angle choice for polarization measurements which could obviously improve the polarization measurement accuracy and effectively reduce the influence of rotation errors to the degree of polarization. © 2010 Copyright SPIE - The International Society for Optical Engineering.
Number of references:12
Main heading:Polarization
Controlled terms:Measurement errors - Measurements - Optimization - Remote sensing - Rotation
Uncontrolled terms:Basic theory - Degree of polarization - Detection angle - Polarization elements - polarization measurement - Polarization measurements
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 - 921.5 Optimization Techniques - 731.1 Control Systems - 711.1 Electromagnetic Waves in Different Media - 601.1 Mechanical Devices
DOI:10.1117/12.859422
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 25>
Accession number:20110213569321
Title:Mechanism of high-energy pulse generation without wave breaking in 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:82
Issue:5
Issue date:November 10, 2010
Publication year:2010
Article number:053808
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 mechanism and intrinsic conditions of high-energy wave-breaking-free pulse generation in fiber lasers mode-locked by a nonlinear polarization rotation technique are investigated numerically and experimentally. Both numerical and experimental results show that the pulses along the two orthogonal polarization axes of the fiber have a large difference in pulse energy. The numerical simulations show that the ratio of the energy of two components is limited and ranges from about 8 to about 65. The slope of the instantaneous frequency at the central position of the pulse decreases rapidly with the increase of the pulse duration and energy, whereas the slope at the pulse edge changes slightly. The accumulation of instantaneous frequency throughout the pulse width approaches a constant in a higher pulse energy regime. Understanding the mechanism and intrinsic conditions of the wave-breaking-free pulse generation could be useful in generating high-energy pulses delivered from fiber lasers. © 2010 The American Physical Society.
Number of references:26
Main heading:Pulse generators
Controlled terms:Fiber lasers - Fibers - High energy lasers - High energy physics - Liquid waves - Mode-locked fiber lasers - Polarization
Uncontrolled terms:High energy - High energy pulse - Instantaneous frequency - Mode-locked - Nonlinear polarization rotation - Numerical simulation - Orthogonal polarizations - Pulse durations - Pulse energies - Pulse generation - Pulse width - Two-component - Wavebreaking
Classification code:931.1 Mechanics - 817 Plastics and Other Polymers: Products and Applications - 812 Ceramics, Refractories and Glass - 932.1 High Energy Physics - 744.4 Solid State Lasers - 713.4 Pulse Circuits - 711.1 Electromagnetic Waves in Different Media - 744.1 Lasers, General
DOI:10.1103/PhysRevA.82.053808
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 26>
Accession number:20105013489531
Title:Structural investigation of GeS<inf>2</inf>-Sb<inf>2</inf>S<inf>3</inf>-CdS chalcogenide glass by using Raman spectroscopy
Authors:Guo, Haitao (1); Chen, Hongyan (2); Lu, Min (1); Peng, Bo (1); Lin, Aoxiang (1); Wang, Yongqian (1)
Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Insitute of Optics and Precision Mechanics, Chinese Academy of Science, Xi'an 710119, China; (2) School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China
Corresponding author:Guo, H.(guoht_001@opt.ac.cn)
Source title:Kuei Suan Jen Hsueh Pao/Journal of the Chinese Ceramic Society
Abbreviated source title:Kuei Suan Jen Hsueh Pao
Volume:38
Issue:11
Issue date:November 2010
Publication year:2010
Pages:2110-2115
Language:Chinese
ISSN:04545648
CODEN:KSYHA5
Document type:Journal article (JA)
Publisher:Chinese Ceramic Society, Baiwanzhuang, Beijing, 100831, China
Abstract:The structure of GeS<inf>2</inf>-Sb<inf>2</inf>S<inf>3</inf>-CdS pseudo-ternary system glass was investigated by using Raman spectroscopy. The results show that the basic structure units forming the glass network are quasi-three-dimensional (3D) [GeS<inf>4</inf>] tetrahedra and quasi-two-dimensional (2D) [SbS<inf>3</inf>] pyramids. With the increase of Sb<inf>2</inf>S<inf>3</inf> content, the structure of glass transfers from the 3D structure to the [GeS<inf>4</inf>]<inf>m</inf>, [SbS<inf>3</inf>]<inf>n</inf> formed layer or chain structure, which is interconnected by Ge-S-Sb bridging sulfurs and Sb-Sb, Ge-Sb, Ge-Ge metallic bonds. CdS can bring some non-bridge sulfurs and decrease the degree of polymerization. Because of the additions of Sb<inf>2</inf>S<inf>3</inf> and CdS, large amount of metallic and dangling bonds are formed; therefore, the number of defects of glass is increased.
Number of references:14
Main heading:Glass
Controlled terms:Cadmium compounds - Cadmium sulfide - Dangling bonds - Germanium - Raman scattering - Raman spectroscopy - Sulfur - Ternary systems - Three dimensional
Uncontrolled terms:3D Structure - Basic structure - CdS - Chain structure - Chalcogenide glass - Degree of polymerization - Glass network - Metallic bonds - Pseudoternary system - Structural investigation - Structure - Three-dimensional (3D)
Classification code:531.1 Metallurgy - 741.1 Light/Optics - 804 Chemical Products Generally - 812.3 Glass - 902.1 Engineering Graphics - 933 Solid State Physics
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 27>
Accession number:20102713051239
Title:Influence of deflector on streak tube's character
Authors:Li, Lizhou (1); Chen, Zhengwu (1); Hu, Xin (2); Zhang, Xiaoli (1); Chen, Zhengkai (3); Tian, Jinshou (3); Liu, Hulin (3)
Author affiliation:(1) Department of Physics and Water and Electricity Engineering, Gansu Normal University for Nationalities, Hezuo 747000, China; (2) Research Center of Laser Fusion, CAEP, P. O. Box 919-986, Mianyang 621900, China; (3) State Key Laboratory of Transient Optics and Photonic Technology, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (4) Graduate University, Chinese Academy of Sciences, Beijing 100039, China
Corresponding author:Li, L.(llix1@163.com)
Source title:Qiangjiguang Yu Lizishu/High Power Laser and Particle Beams
Abbreviated source title:Qiangjiguang Yu Lizishu
Volume:22
Issue:6
Issue date:June 2010
Publication year:2010
Pages:1219-1222
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 influence of deflector position on characters of the streak tube is discussed. A large amount of electron trajectories are figured out by statistical simulation method, and the modulation transfer function(MTF) used to evaluate temporal and spatial resolution is calculated. The conclusions are as follows: the streak tube has obtained the optimal temporal resolution when the deflection plate is set to the aperture of anode, and the optimal spatial resolution is obtained when deflection plate is set to the point with minimum electron beam diameter. In addition, any perpendicular deviation of deflection plate from the axis of streak tube can worsen both temporal and spatial resolution worse, thus axis of the deflection plate should strictly overlap with the center axis of the streak tube.
Number of references:10
Main heading:Transfer functions
Controlled terms:Deflection (structures) - Electron beams - Image resolution - Modulation - Optimization - Streak cameras - Tubes (components)
Uncontrolled terms:Electron trajectories - Modulation transfer function - Spatial resolution - Statistical simulation - Streak tubes - Temporal resolution
Classification code:723.2 Data Processing and Image Processing - 731.1 Control Systems - 741 Light, Optics and Optical Devices - 741.1 Light/Optics - 932 High Energy Physics; Nuclear Physics; Plasma Physics - 742 Cameras and Photography - 921 Mathematics - 921.5 Optimization Techniques - 931.3 Atomic and Molecular Physics - 742.2 Photographic Equipment - 718 Telephone Systems and Related Technologies; Line Communications - 717 Optical Communication - 408.2 Structural Members and Shapes - 421 Strength of Building Materials; Mechanical Properties - 511.2 Oil Field Equipment - 616.1 Heat Exchange Equipment and Components - 619.1 Pipe, Piping and Pipelines - 703.1 Electric Networks - 716 Telecommunication; Radar, Radio and Television - 716.4 Television Systems and Equipment
DOI:10.3788/HPLPB20102206.1219
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 28>
Accession number:20110413608677
Title:Spatio-temporal salience based video quality assessment
Authors:Gao, Xinbo (1); Liu, Ni (1); Lu, Wen (1); Tao, Dacheng (2); Li, Xuelong (3)
Author affiliation:(1) VIPS Lab. and Key Lab. of Intelligent Percept. and Image Understanding of Min. of Education of China, School of Electronic Engineering, Xidian University, Xi'an 710071, China; (2) School of Computer Engineering, Nanyang Technological University, Singapore 639798, 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
Corresponding author:Gao, X.(xbgao@mail.xidian.edu.cn)
Source title:Conference Proceedings - IEEE International Conference on Systems, Man and Cybernetics
Abbreviated source title:Conf. Proc. IEEE Int. Conf. Syst. Man Cybern.
Monograph title:2010 IEEE International Conference on Systems, Man and Cybernetics, SMC 2010
Issue date:2010
Publication year:2010
Pages:1501-1505
Article number:5642429
Language:English
ISSN:1062922X
CODEN:PICYE3
ISBN-13:9781424465880
Document type:Conference article (CA)
Conference name:2010 IEEE International Conference on Systems, Man and Cybernetics, SMC 2010
Conference date:October 10, 2010 - October 13, 2010
Conference location:Istanbul, Turkey
Conference code:83423
Publisher:Institute of Electrical and Electronics Engineers Inc., 3 Park Avenue, 17th Floor, New York, NY 10016-5997, United States
Abstract:It is important to design an effective and efficient objective metric of the video quality in video processing areas. The most reliable way is subjective evaluation, thus the most reasonable objective metric should adequately consider characteristics of the human visual system (HVS). Visual attention (VA) is one of the essential visual phenomena of HVS, the realization of which relies on the saliency of visual field. Moreover, the saliency of visual field has a great influence on recognition, memorization and subjective evaluation of the image. This paper explores the saliency of visual field for objective quality assessment of videos. The proposed method first uses the VA model to obtain visual saliency map of the distorted video, including color, intensity and motion. Then the salient map is used to weight a structural similarity map between the original and distorted videos to get the final value of the video quality. Experimental results prove that the proposed method achieves a good correlation with subjective valuation. ©2010 IEEE.
Number of references:16
Main heading:Video signal processing
Controlled terms:Cybernetics - Image processing - Rating - Vision - Visualization
Uncontrolled terms:Human Visual System - Motion - Spatio-temporal - Video quality assessment - Visual Attention
Classification code:716.4 Television Systems and Equipment - 731.1 Control Systems - 741 Light, Optics and Optical Devices - 741.2 Vision - 902.1 Engineering Graphics - 902.2 Codes and Standards
DOI:10.1109/ICSMC.2010.5642429
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 29>
Accession number:20103613222085
Title:Analysis of stray light caused by thermal radiation of infrared detection system
Authors:Niu, Jinxing (1); Zhou, Renkui (1); Liu, Zhaohui (1); Yang, Jianguo (1); Cai, Zhan'en (1); Lin, Futiao (1)
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, Shaanxi 710119, China; (2) School of Mechanics, North China Institute of Water Conservancy and Hydroelectric Power, Zhengzhou, Henan 450011, China; (3) Graduate University of Chinese Academy of Sciences, Beijing 100049, China
Corresponding author:Niu, J.(njx.mail@163.com)
Source title:Guangxue Xuebao/Acta Optica Sinica
Abbreviated source title:Guangxue Xuebao
Volume:30
Issue:8
Issue date:August 2010
Publication year:2010
Pages:2267-2271
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 typical infrared detection system [Ritchey-Chretien (R-C) system] and its baffles are designed. Its structure model is established with the TracePro software. Stray lights caused by thermal radiation of critical inner surface are analyzed by a ray tracing program. The relation of photons of stray lights and temperature which varies from 250 K to 320 K is given. The stray light caused by sky background is calculated. The curve of increasing rate of photon number of stray lights received by single pixel versus temperature is given. The results show that an open telescope without main tube cannot do well obviously in reducing stray lights. The temperature of the inner baffle of main mirror should be less than 230 K in order to detect the background-limited target.
Number of references:16
Main heading:Stray light
Controlled terms:Headlights - Heat radiation - Infrared detectors - Photons
Uncontrolled terms:Infrared detection - Infrared detection systems - Inner surfaces - Main mirror - Photon numbers - Ritchey-Chretien(R-C) system - Single pixel - Sky background - Structure models - Thermal radiations - TracePro
Classification code:641.2 Heat Transfer - 707.2 Electric Lamps - 741.1 Light/Optics - 741.3 Optical Devices and Systems
DOI:10.3788/AOS20103008.2267
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 30>
Accession number:20095012539462
Title:Effect of vectorial nature on spectral anomalies of ultrashort pulsed beams from a hard-edged aperture
Authors:Yang, Y. (1); Duan, K. (2); Jiang, D. (1); Zhang, J. (1); Chen, Y. (1)
Author affiliation:(1) Institute of Astronautics and Aeronautics, University of Electronic Science and Technology of China, Chengdu 610054, 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:Yang, Y.(dr.yang2003@yahoo.com.cn)
Source title:Applied Physics B: Lasers and Optics
Abbreviated source title:Appl Phys B
Volume:98
Issue:1
Issue date:January 2010
Publication year:2010
Pages:125-131
Language:English
ISSN:09462171
CODEN:APBOEM
Document type:Journal article (JA)
Publisher:Springer Verlag, Tiergartenstrasse 17, Heidelberg, D-69121, Germany
Abstract:Based on the vectorial Rayleigh-Sommerfeld diffraction integrals, the analytical expression for the spectral intensity of a vectorial nonparaxial ultrashort pulsed Gaussian beam diffracted at a rectangular hard-aperture is derived. The results of the far-field and paraxial cases can be regarded as special cases of the general expression. Effect of vectorial nature on spectral anomalies of ultrashort pulsed beams passing through a hard-edged aperture is analyzed in detail. It is shown that the spectral switch near the phase singularity, which is predicated under the condition of the scalar paraxial theory, disappears with the increasing effect of the vectorial and nonparaxial nature. © 2009 Springer-Verlag.
Number of references:25
Main heading:Gaussian beams
Controlled terms:Diffraction - Ultrashort pulses
Uncontrolled terms:Analytical expressions - Far-field - General expression - Hard-edged aperture - Increasing effect - Nonparaxial - Paraxial - Paraxial theory - Phase singularities - Rayleigh-Sommerfeld diffraction integral - Spectral anomalies - Spectral intensity - Spectral switches - Ultrashort pulsed beams - Ultrashort pulsed Gaussian beam
Classification code:711 Electromagnetic Waves - 711.1 Electromagnetic Waves in Different Media - 741.1 Light/Optics - 744.1 Lasers, General
DOI:10.1007/s00340-009-3730-6
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 31>
Accession number:20104613389158
Title:High birefringent rhombic-hole photonic crystal fibers
Authors:Hu, Bin (1); Lu, Min (1); Li, Weinan (1); Zou, Kuaisheng (1); Zhou, Zhiguang (1); Lin, Aoxiang (1); Li, Ning (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, 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:49
Issue:31
Issue date:November 1, 2010
Publication year:2010
Pages:6098-6101
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:High birefringence induced by rhombic air-hole photonic crystal fibers (PCFs) is numerically analyzed by using the finite-element method. The birefringence of a few kinds of PCFs was investigated with different parameters related to rhombic holes, including the rhombic-hole shape, size, and spacing. It was found that the birefringence of the proposed rhombic-hole PCF in this study is relatively larger than that of an elliptical-hole PCF with the same air-filling fraction (f = 0.0375) when the ratio of the rhombic-hole diagonal length is equal to the elliptical-hole ellipticity. © 2010 Optical Society of America.
Number of references:22
Main heading:Holey fibers
Controlled terms:Birefringence - Crystal whiskers - Finite element method - Photonic crystals
Uncontrolled terms:Air-filling fraction - High birefringence
Classification code:741.1 Light/Optics - 741.3 Optical Devices and Systems - 801.4 Physical Chemistry - 921.6 Numerical Methods - 951 Materials Science
DOI:10.1364/AO.49.006098
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 32>
Accession number:20104313324462
Title:Developments and trends of the computed tomography imaging spectrometers
Authors:Wei, Ru-Yi (1); Zhou, Jin-Song (3); Jing, Juan-Juan (1); Wang, Xin-Quan (1); Gao, Xiao-Hui (1); Wang, Le (1)
Author affiliation:(1) Key Laboratory of Spectral Imaging Technology, Xi'an Institute of Optics and Precision Mechanics of Chinese Academy of Sciences, Chinese Academy of Science, Xi'an 710119, China; (2) Graduate University of Chinese Academy of Sciences, Beijing 100049, China; (3) Academy of Opto-Electronics, Chinese Academy of Sciences, Beijing 100190, China
Corresponding author:Zhou, J.-S.(jszhou@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:30
Issue:10
Issue date:October 2010
Publication year:2010
Pages:2866-2873
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 reviews the computed tomography imaging spectrometer (CTIS) measurement systems at home and abroad from the aspects of technological characterizations and research focuses. The developments of computed tomography imaging spectrometers are described, involving the adding new abilities by improving systematic structure and by incorporating other elements or systems, the study and applications of novel grating elements, detectors or apparatus, the optimizations and improvements of the system calibration methods and reconstruction algorithms. In addition, based on the classification of application scope, the extension status of probing spectral bands and application fields towards computed tomography imaging spectrometers and related systems are summarized. The principles of non-scanning computed tomography imaging spectrometer and high-throughput computed tomography imaging spectrometer are introduced. Moreover, the trends of computed tomography imaging spectrometers are discussed too.
Number of references:67
Main heading:Computerized tomography
Controlled terms:Prisms - Spectrometers - Spectrometry
Uncontrolled terms:Central-slice theorems - Computed Tomography - Direct vision prism - Grating - Imaging spectrometers
Classification code:531 Metallurgy and Metallography - 741.3 Optical Devices and Systems - 801 Chemistry
DOI:10.3964/j.issn.1000-0593(2010)10-2866-08
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 33>
Accession number:20100312640970
Title:Spatially modulated fourier transform imaging spectrometer data compression research
Authors:Huang, Min (1); Xiangli, Bin (1); Yuan, Yan (4); Shen, Zhong (5); Lü, Qun-Bo (1); Wang, Zhong-Hou (1); Liu, Xue-Bin (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) Graduate University, Chinese Academy of Sciences, Beijing 100049, China; (3) Academy of Opto-Electronics, Chinese Academy of Sciences, Beijing 100190, China; (4) Beihang University, Beijing 100083, China; (5) Dong Fang Hong Satellite Co. Ltd., Beijing 100094, China
Corresponding author:Huang, M.(huangmin@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:30
Issue:1
Issue date:January 2010
Publication year:2010
Pages:278-282
Language:Chinese
ISSN:10000593
CODEN:GYGFED
Document type:Journal article (JA)
Publisher:Science Press, 18,Shuangqing Street,Haidian, Beijing, 100085, China
Abstract:Fourier transform imaging spectrometer is a new technic, and has been developed very fast in recent ten years. When it is used in satellite, because of the limit by the data transmission, the authors need to compress the original data obtained by the Fourier transform imaging spectrometer, then, the data can be transmitted, and can be incepted on the earth and decompressed. Then the authors can do data process to get spectrum data which can be used by user. Data compression technic used in Fourier transform imaging spectrometer is a new technic, and few papers introduce it at home and abroad. In this paper the authors will give a data compression method, which has been used in EDIS, and achieved a good result.
Number of references:7
Main heading:Fourier transforms
Controlled terms:Data compression - Spectrometers - Spectrometry
Uncontrolled terms:Data process - Data transmission - Fourier transform imaging spectrometers - Spatial modulation - Spatial modulations
Classification code:941.3 Optical Instruments - 921.3 Mathematical Transformations - 801 Chemistry - 941.4 Optical Variables Measurements - 741.3 Optical Devices and Systems - 722.3 Data Communication, Equipment and Techniques - 716.1 Information Theory and Signal Processing - 723.2 Data Processing and Image Processing
DOI:10.3964/j.issn.1000-0593(2010)01-0278-05
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 34>
Accession number:20103313147371
Title:Simple approach to picosecond pulse generation based on semiconductor optical amplifier
Authors:Yan, S.Y. (1); Zhao, W. (1); Xie, X.P. (1); Lu, H.Q. (1)
Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, New Industrial Park, CAS, No.17 Xinxi Road, Xi'an, Shaanxi, China
Corresponding author:Yan, S. Y.(yan@opt.ac.cn)
Source title:Electronics Letters
Abbreviated source title:Electron. Lett.
Volume:46
Issue:10
Issue date:May 13, 2010
Publication year:2010
Pages:703-704
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:A simple optical pulse generator based on a semiconductor optical amplifier (SOA) is demonstrated with an easy-generated external optical pulse sequence. Using the cross-gain modulation and self-phase modulation effects inside an SOA, the simple optical pulse generator generates a 10GHz 3.8ps optical pulse train with an extremely low timing jitter of 60fs. © 2010 The Institution of Engineering and Technology.
Number of references:6
Main heading:Pulse generators
Controlled terms:Light pulse generators - Optical switches - Semiconductor optical amplifiers - Signal generators - Timing jitter
Uncontrolled terms:Cross gain modulation - Optical pulse - Optical pulse sequences - Optical pulse train - Pico-second pulse - Simple approach
Classification code:744.4 Solid State Lasers - 741.3 Optical Devices and Systems - 741.1 Light/Optics - 722.3 Data Communication, Equipment and Techniques - 718 Telephone Systems and Related Technologies; Line Communications - 717 Optical Communication - 716 Telecommunication; Radar, Radio and Television - 715 Electronic Equipment, General Purpose and Industrial - 714.2 Semiconductor Devices and Integrated Circuits - 713.5 Electronic Circuits Other Than Amplifiers, Oscillators, Modulators, Limiters, Discriminators or Mixers - 713.4 Pulse Circuits
DOI:10.1049/el.2010.0313
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 35>
Accession number:IP51135820
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, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Science (CAS), No. 17 Xinxi Road, New Industrial Park, Xi'an Hi-Tech Industrial Development Zone, Xi'an, Shaanxi 710119, China
Corresponding author:Liu, H.(liuhongjun@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
Publication year:2010
Language:English
ISSN:01689002
CODEN:NIMAER
Document type:Article in Press
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 mJ with the output stability of better than 4.5% rms at 3.467 μm is obtained at the repetition rate of 10 Hz and pulse width of 2 ns, and the 11.7 mJ of 1.535 μm radiation is obtained simultaneously. This extracavity NCPM KTA OPO is very useful when high energy, high beam quality and smooth time domain are needed. © 2010 Elsevier B.V. All rights reserved.
Main heading:Parametric oscillators
Controlled terms:High energy physics - Neodymium lasers - Optical parametric oscillators - Pulse repetition rate - Pumping (laser)
Uncontrolled terms:Dual-wavelength - High beam quality - High energy - Midinfrared - ND : YAG lasers - Noncritical phase matching - Output stability - Pulse energies - Pulse width - Q-switched - Repetition rate - Single longitudinal mode - Time domain - Type II
Classification code:713.2 Oscillators - 744.1 Lasers, General - 744.4 Solid State Lasers - 932.1 High Energy Physics
DOI:10.1016/j.nima.2010.10.035
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 36>
Accession number:20103313154180
Title:Electronic structure and magnetism of Fe-doped SiC nanotubes
Authors:Zhang, Weihu (1); Zhang, Fuchun (3); Zhang, Zhiyong (4); Lu, Shuyuan (5); Yang, Yanning (3)
Author affiliation:(1) Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710068, China; (2) Graduate University, Chinese Academy of Sciences, Beijing 100049, China; (3) College of Physics and Electronic Information, Yan'An University, Yan'an 716000, China; (4) Information Science and Technology Institution, Northwest University, Xi'an 710127, China; (5) Department of Telecommunications, Xi'An Institute of Posts and Telecommunications, Xi'an 710121, China
Corresponding author:Zhang, Z.(zhangzy@nwu.edu.cn)
Source title:Science China: Physics, Mechanics and Astronomy
Abbreviated source title:SCI. CHINA Phys. Mech. Astron.
Volume:53
Issue:9
Issue date:September 2010
Publication year:2010
Pages:1582-1589
Language:English
ISSN:16747348
Document type:Journal article (JA)
Publisher:Science in China Press, 16 Donghuangchenggen North Street, Beijing, PR 100717, China
Abstract:The electronic structure and magnetic properties of Fe-doped SiC nanotubes are investigated by using the first-principles method based on density functional theory (DFT) in the local spin density approximation (LSDA). The calculation results indicate that the SiC nanotube of Fe substitution for C exhibits antiferromagnetism while ferromagnetism features prominently when Fe substitutes Si. This is a kind of half-metal magnetic material. The formation energy calculation results show that the formation energy of ferromagnetic structure is 3.2 eV lower than that of antiferromagnetic structure. Fe atoms are more likely to replace Si atoms. Spin-orbit coupling induces electron spin polarization in the ground state. Also, the doping Fe atoms make relaxation towards the outside of the tube to some extent and larger geometric distortion occurs when Fe substitutes C, but the whole geometric structure of SiC nanotubes is not damaged due to the doping. It is revealed in the calculation of energy band structure and density of states that more dispersed distribution of energy levels is produced near the Fermi level. For Fe substitution for Si, obviously there are spin-split and intense p-d hybrid effects by Si 3p electron spins and Fe 3d electron spins localized at the exchanging interactions between magnetic transitional metal (TM) impurities. Spin electronic density results indicate that system magnetic moments are mainly generated by the unpaired 3d electrons of Fe atoms. All these results show that the transition metal doping SiC nanotube could be a potential route to fabricating the promising magnetic materials. © 2010 Science China Press and Springer-Verlag Berlin Heidelberg.
Number of references:22
Main heading:Crystal atomic structure
Controlled terms:Antiferromagnetic materials - Antiferromagnetism - Atoms - Band structure - Density functional theory - Doping (additives) - Electron tubes - Electronic properties - Electronic structure - Electrons - Ferromagnetic materials - Ferromagnetism - Magnetic devices - Magnetic moments - Magnetic properties - Nanotubes - Silicon - Silicon carbide - Spin dynamics - Transition metals
Uncontrolled terms:3d electron - Antiferromagnetic structures - Density of state - doped - Electron spin polarization - Electron spins - Energy band structure - Energy level - Fe atoms - Fe-doped - Ferromagnetic structures - First principles method - First-principles - Formation energies - Geometric distortion - Geometric structure - Half metals - Local spin density approximation - Si atoms - SiC nanotubes - Spin electronic - Spin-orbit couplings - Transition metal doping - Transitional metals
Classification code:933.3 Electronic Structure of Solids - 801.4 Physical Chemistry - 804.2 Inorganic Compounds - 812.2 Refractories - 922.1 Probability Theory - 931.1 Mechanics - 931.2 Physical Properties of Gases, Liquids and Solids - 931.3 Atomic and Molecular Physics - 931.4 Quantum Theory; Quantum Mechanics - 932.1 High Energy Physics - 933 Solid State Physics - 933.1 Crystalline Solids - 933.1.1 Crystal Lattice - 801 Chemistry - 531 Metallurgy and Metallography - 549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals - 701.1 Electricity: Basic Concepts and Phenomena - 701.2 Magnetism: Basic Concepts and Phenomena - 704 Electric Components and Equipment - 761 Nanotechnology - 708.4 Magnetic Materials - 712.1.1 Single Element Semiconducting Materials - 714 Electronic Components and Tubes - 714.1 Electron Tubes - 714.2 Semiconductor Devices and Integrated Circuits - 712.1 Semiconducting Materials
DOI:10.1007/s11433-010-4089-8
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 37>
Accession number:20100912737263
Title:A review of active appearance models
Authors:Gao, Xinbo (1); Su, Ya (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, China; (3) School of Computer Engineering, Nanyang Technological University, Singapore 639798, Singapore
Corresponding author:Gao, X.(xbgao@mail.xidian.edu.cn)
Source title:IEEE Transactions on Systems, Man and Cybernetics Part C: Applications and Reviews
Abbreviated source title:IEEE Trans Syst Man Cybern Pt C Appl Rev
Volume:40
Issue:2
Issue date:March 2010
Publication year:2010
Pages:145-158
Article number:5373937
Language:English
ISSN:10946977
CODEN:ITCRFH
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:Active appearance model (AAM) is a powerful generative method for modeling deformable objects. The model decouples the shape and the texture variations of objects, which is followed by an efficient gradient-based model fitting method. Due to the flexible and simple framework, AAM has been widely applied in the fields of computer vision. However, difficulties are met when it is applied to various practical issues, which lead to a lot of prominent improvements to the model. Nevertheless, these difficulties and improvements have not been studied systematically. This motivates us to review the recent advances of AAM. This paper focuses on the improvements in the literature in turns of the problems suffered by AAM in practical applications. Therefore, these algorithms are summarized from three aspects, i.e., efficiency, discrimination, and robustness. Additionally, some applications and implementations of AAM are also enumerated. The main purpose of this paper is to serve as a guide for further research. © 2009 IEEE.
Number of references:109
Main heading:Face recognition
Controlled terms:Computer vision - Deformation - Feature extraction
Uncontrolled terms:Active appearance model (AAM) - Active appearance models - Deformable object - Gradient based - Model fitting method - Practical issues - Texture variation
Classification code:741.2 Vision - 741.1 Light/Optics - 731.6 Robot Applications - 751.1 Acoustic Waves - 723.5 Computer 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/TSMCC.2009.2035631
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 38>
Accession number:20100312647618
Title:Footwear for gender recognition
Authors:Yuan, Yuan (1); Pang, Yanwei (2); Li, Xuelong (3)
Author affiliation:(1) School of Engineering and Applied Science, Aston University, Birmingham B4 7ET, United Kingdom; (2) School of Electronic Information Engineering, Tianjin University, Tianjin 300072, 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:Yuan, Y.(y.yuan1@aston.ac.uk)
Source title:IEEE Transactions on Circuits and Systems for Video Technology
Abbreviated source title:IEEE Trans Circuits Syst Video Technol
Volume:20
Issue:1
Issue date:January 2010
Publication year:2010
Pages:131-135
Article number:4914855
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:Conventionally, biometrics resources, such as face, gait silhouette, footprint, and pressure, have been utilized in gender recognition systems. However, the acquisition and processing time of these biometrics data makes the analysis difficult. This letter demonstrates for the first time how effective the footwear appearance is for gender recognition as a biometrics resource. A footwear database is also established with reprehensive shoes (footwears). Preliminary experimental results suggest that footwear appearance is a promising resource for gender recognition. Moreover, it also has the potential to be used jointly with other developed biometrics resources to boost performance. © 2010 IEEE.
Number of references:18
Main heading:Face recognition
Controlled terms:Biometrics
Uncontrolled terms:Footwear - Gender recognition - Processing Time
Classification code:461 Bioengineering and Biology - 716 Telecommunication; Radar, Radio and Television - 723 Computer Software, Data Handling and Applications - 723.5 Computer Applications - 732 Control Devices - 741.1 Light/Optics
DOI:10.1109/TCSVT.2009.2022795
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 39>
Accession number:IP50836450
Title:Subspace learning
Authors:Li, Xuelong (1); Tao, Dacheng (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, PR China; (2) School of Computer Engineering, Nanyang Technological University, 639798, Singapore
Corresponding author:Li, X.(xuelong_li@opt.ac.cn)
Source title:Neurocomputing
Abbreviated source title:Neurocomputing
Publication year:2010
Language:English
ISSN:09252312
CODEN:NRCGEO
Document type:Article in Press
Uncontrolled terms:Subspace learning
DOI:10.1016/j.neucom.2010.02.012
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 40>
Accession number:20102713051246
Title:Effect of screen-electrode structures on MCP imager vacuum-gap discharge
Authors:Cao, Zhurong (1); Yang, Zhenghua (1); Bai, Xiaohong (2); Zhang, Haiying (1); Liu, Shenye (1); Ding, Yongkun (1)
Author affiliation:(1) Research Center of Laser Fusion, CAEP, P. O. Box 919-987, Mianyang 621900, China; (2) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710068, China
Corresponding author:Cao, Z.(cao33jin@yahoo.com.cn)
Source title:Qiangjiguang Yu Lizishu/High Power Laser and Particle Beams
Abbreviated source title:Qiangjiguang Yu Lizishu
Volume:22
Issue:6
Issue date:June 2010
Publication year:2010
Pages:1251-1254
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 vacuum-gap discharge damage of micro-channel plate(MCP) imagers based on two screen-electrode structures, with Al-screen and indium-tin-oxide(ITO) screen respectively, is investigated after first arcing. The results show that the erosion pattern of Al-screen MCP imager appears as crater, and the electric insulating strength is less than 3 kV/mm under 10 μs-wide screen voltage, independent of MCP. The erosion of ITO-screen mostly appears as phosphor transporting to MCP, which drives field emission to steady state, and the electric insulating strength can reach 9 kV/mm at 10 μs-wide voltage. Thus, the discharge of MCP imagers depends mostly on screen-electrode structure, and ITO-screen MCP imagers can obtain higher electric insulating strength.
Number of references:9
Main heading:Image storage tubes
Controlled terms:Aluminum - Electric drives - Field emission - Partial discharges - Plates (structural components) - Tin - Tin plate - Titanium compounds - Vacuum
Uncontrolled terms:Electrode structure - Erosion patterns - Imagers - Indium tin oxide - Insulating strength - Micro channel plate - Steady state - Vacuum discharge - Wide screen
Classification code:712.1 Semiconducting Materials - 714.1 Electron Tubes - 714.2 Semiconductor Devices and Integrated Circuits - 804.1 Organic Compounds - 804.2 Inorganic Compounds - 931.4 Quantum Theory; Quantum Mechanics - 932 High Energy Physics; Nuclear Physics; Plasma Physics - 705 Electric Generators and Motors - 408.2 Structural Members and Shapes - 539.3 Metal Plating - 541.1 Aluminum - 545.3 Steel - 546.2 Tin and Alloys - 633 Vacuum Technology - 701.1 Electricity: Basic Concepts and Phenomena
DOI:10.3788/HPLPB20102206.1251
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 41>
Accession number:20104813435464
Title:Wavelength dependence four-wave mixing spectroscopy in a micrometric atomic vapour
Authors:Yuan-Yuan, Li (1); Li, Li (1); Yan-Peng, Zhang (3); Si-Wen, Bi (2)
Author affiliation:(1) Institute of Optics and Electronics, Department of Physics, Xi'an University of Arts and Science, Xi'an 710065, China; (2) State Key Laboratory of Transient Optics and Technology, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710068, China; (3) Key Laboratory for Physical Electronics and Devices, Ministry of Education, Xi'an Jiaotong University, Xi'an 710049, China
Corresponding author:Yuan-Yuan, L.(liyynxcn@yahoo.com.cn)
Source title:Chinese Physics B
Abbreviated source title:Chin. Phys.
Volume:19
Issue:9
Issue date:September 2010
Publication year:2010
Article number:090702
Language:English
ISSN:16741056
Document type:Journal article (JA)
Publisher:Institute of Physics Publishing, Temple Back, Bristol, BS1 6BE, United Kingdom
Abstract:This paper presents a theoretical study of wavelength dependence four-wave-mixing (FWM) spectroscopy in a micrometric thin atomic vapour. It compares three cases termed as mismatched case I, matched case and mismatched case II for the probe wavelength less, equal and greater than the pump wavelength respectively. It finds that Dickenarrowing can overcome width broadening induced by Doppler effects and polarisation interference of thermal atoms, and high resolution FWM spectra can be achieved both in matched and mismatched wavelength for many cases. It also finds that the magnitude of the FWM signal can be dramatically modified to be suppressed or to be enhanced in comparison with that of matched wavelength in mismatched case I or II. The width narrowing and the magnitude suppression or enhancement can be demonstrated by considering enhanced contribution of slow atoms induced by atom-wall collision and transient effect of atom-light interaction in a micrometric thin vapour. © 2010 Chinese Physical Society and IOP Publishing Ltd.
Number of references:14
Main heading:Four wave mixing
Controlled terms:Atomic spectroscopy - Atoms - Doppler effect - Mixing - Polarization - Slow light - Wavelength
Uncontrolled terms:Atom-light interactions - Atomic vapour - Case II - Dicke-narrowing - Four-wave mixing spectroscopy - FWM signal - High resolution - Polarisation - Probe wavelength - Pump wavelength - Theoretical study - Transient effect - Wall collision - Wavelength dependence - Width narrowing
Classification code:741.1 Light/Optics - 802.3 Chemical Operations - 931.3 Atomic and Molecular Physics
DOI:10.1088/1674-1056/19/9/090702
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 42>
Accession number:20110113551061
Title:The analysis of the wavefront aberration caused by the gravity of the tunable-focus liquid-filled membrane lens
Authors:Zhang, Wei (1); Liu, Pengfei (1); Wei, Xiaona (1); Zhuang, Songlin (1); Yang, Bo (1)
Author affiliation:(1) Shanghai Key Laboratory of Contemporary Optical System, Optical and Electronic Information Engineering College, University of Shanghai for Science and Technology, Shanghai 200093, China; (2) Xi'an Institute of Optical and Precision Mechanics of CAS, Xi'an 710119, China
Corresponding author:Zhang, W.(wei_zhang@usst.edu.cn)
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:7849
Monograph title:Optical Design and Testing IV
Issue date:2010
Publication year:2010
Article number:78491W
Language:English
ISSN:0277786X
CODEN:PSISDG
ISBN-13:9780819483799
Document type:Conference article (CA)
Conference name:Optical Design and Testing IV
Conference date:October 18, 2010 - October 20, 2010
Conference location:Beijing, China
Conference code:83316
Sponsor:The Society of Photo-Optical Instrumentation Engineers (SPIE); Chinese Optical Society (COS)
Publisher:SPIE, P.O. Box 10, Bellingham, WA 98227-0010, United States
Abstract:Liquid lens is a novel optical device which can implement active zooming. With liquid lens, zoom camera can be designed with more miniature size and simpler structure than before. It is thought that the micro zoom system with liquid lens has a very wide potential applications in many fields, in which the volume and weight of the system are critically limited, such as endoscope, mobile, PDA and so on. There are mainly three types of tunable-focus liquid lens: liquid crystal lens, electrowetting effect based liquid lens and liquid-filled membrane lens. Comparing with the other two kinds of liquid lens, the liquid-filled membrane lens has the advantages of simple structure, flexible aperture and high zooming efficiency. But its membrane surface will have an initial shape deformation caused by the gravity when the aperture of the lens is at large size, which will lead to the wave front aberration and the imaging quality impairing. In this paper, the initial deformation of the lens caused by the gravity was simulated based on the theory of Elastic Mechanics, which was calculated by the Finite Element Analysis method. The relationship between the diameter of the lens and the wave front aberration caused by the gravity was studied. And the Optical path difference produced by different liquid density was also analyzed. © 2010 Copyright SPIE - The International Society for Optical Engineering.
Number of references:12
Main heading:Optical instruments
Controlled terms:Deformation - Finite element method - Lenses - Liquid crystals - Membranes - Optical design - Wavefronts
Uncontrolled terms:Elastic mechanics - Electro wetting - Finite Element Analysis - Finite element analysis method - gravity - Imaging quality - Initial shape - Large sizes - Liquid crystal lens - Liquid density - Liquid lens - Membrane surface - Optical path difference - Potential applications - Simple structures - wave front aberration - Wavefront aberrations - Zoom camera - Zoom systems
Classification code:951 Materials Science - 921.6 Numerical Methods - 804 Chemical Products Generally - 741.3 Optical Devices and Systems - 741.1 Light/Optics - 422 Strength of Building Materials; Test Equipment and Methods - 421 Strength of Building Materials; Mechanical Properties
DOI:10.1117/12.869866
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 43>
Accession number:20101612868541
Title:Research on the half-wave voltage stability of Y waveguide in FOG
Authors:Liu, Ying (1); Li, Yan (1); Ji, Zhongxiao (2); Xu, Jintao (2)
Author affiliation:(1) Faculty of Mechanical and Precision Instrument Engineering, Xi'an University of Technology, Xi'an 710048, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, CAS, Xi'an 710119, China
Corresponding author:Liu, Y.(ly676@163.com)
Source title:Yi Qi Yi Biao Xue Bao/Chinese Journal of Scientific Instrument
Abbreviated source title:Yi Qi Yi Biao Xue Bao
Volume:31
Issue:2
Issue date:February 2010
Publication year:2010
Pages:449-453
Language:Chinese
ISSN:02543087
CODEN:YYXUDY
Document type:Journal article (JA)
Publisher:Science Press, 18,Shuangqing Street,Haidian, Beijing, 100085, China
Abstract:Y waveguide is a key component of digital closed-loop fiber optic gyroscope, and the stability of its half-wave voltage directly affects the scale factor stability of FOG. Working temperature is the main factor that influences on the stability of Y waveguide half-wave voltage. Theoretical deduction of Y waveguide physical properties and ex-periment of half-wave voltage changing along with temperature indicate that the relationship between half-wave voltage and temperature is nearly linear. The non-linear errors are induced by Y waveguide electric field and mechanical stress. Through calibrating the Y waveguide half-wave voltage and making compensation, the optimal modulation state of FOG can be achieved and highly stable FOG scale factor can be obtained.
Number of references:15
Main heading:Waveguides
Controlled terms:Electric fields - Fiber optics - Fog - Gyroscopes - Optical materials - Stability - Stresses
Uncontrolled terms:Closed-loop - Fiber optic gyro - Fiber optic gyroscopes - Half-wave voltage - Key component - Mechanical stress - Non-linear error - Scale Factor - Scale factor stability - Working temperatures - Y waveguide
Classification code:961 Systems Science - 951 Materials Science - 943.1 Mechanical Instruments - 931 Classical Physics; Quantum Theory; Relativity - 801 Chemistry - 741.3 Optical Devices and Systems - 741.1.2 Fiber Optics - 731.4 System Stability - 714.3 Waveguides - 701.1 Electricity: Basic Concepts and Phenomena - 443.1 Atmospheric Properties - 421 Strength of Building Materials; Mechanical Properties - 408.1 Structural Design, General
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 44>
Accession number:20101212800234
Title:On combining morphological component analysis and concentric morphology model for mammographic mass detection
Authors:Gao, Xinbo (1); Wang, Ying (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, China; (3) School of Computer Engineering, Nanyang Technological University, Singapore 639798, Singapore
Corresponding author:Gao, X.(xbgao@mail.xidian.edu.cn)
Source title:IEEE Transactions on Information Technology in Biomedicine
Abbreviated source title:IEEE Trans Inf Technol Biomed
Volume:14
Issue:2
Issue date:March 2010
Publication year:2010
Pages:266-273
Article number:5325906
Language:English
ISSN:10897771
CODEN:ITIBFX
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:Mammographic mass detection is an important task for the early diagnosis of breast cancer. However, it is difficult to distinguish masses from normal regions because of their abundant morphological characteristics and ambiguous margins. To improve the mass detection performance, it is essential to effectively preprocess mammogram to preserve both the intensity distribution and morphological characteristics of regions. In this paper, morphological component analysis is first introduced to decompose a mammogram into a piecewise-smooth component and a texture component. The former is utilized in our detection scheme as it effectively suppresses both structural noises and effects of blood vessels. Then, we propose two novel concentric layer criteria to detect different types of suspicious regions in a mammogram. The combination is evaluated based on the Digital Database for Screening Mammography, where 100 malignant cases and 50 benign cases are utilized. The sensitivity of the proposed scheme is 99% in malignant, 88% in benign, and 95.3% in all types of cases. The results show that the proposed detection scheme achieves satisfactory detection performance and preferable compromises between sensitivity and false positive rates. © 2009 IEEE.
Number of references:21
Main heading:Mammography
Controlled terms:Blood vessels - Computer aided analysis - Diagnosis - Magnetic logic devices - Morphology - X ray screens
Uncontrolled terms:Breast Cancer - Component analysis - Computer-aided detection - Mass detection - Morphological component analysis (MCA)
Classification code:951 Materials Science - 931.2 Physical Properties of Gases, Liquids and Solids - 746 Imaging Techniques - 723.5 Computer Applications - 721.2 Logic Elements - 708.4 Magnetic Materials - 462.1 Biomedical Equipment, General - 461.7 Health Care - 461.6 Medicine and Pharmacology - 461.2 Biological Materials and Tissue Engineering - 422.1 Strength of Building Materials : Test Equipment
DOI:10.1109/TITB.2009.2036167
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 45>
Accession number:20101012754263
Title:Broadly tunable dual-wavelength erbium-doped ring fiber laser based on a high-birefringence fiber loop mirror
Authors:Sun, H.B. (1); Liu, X.M. (1); Gong, Y.K. (1); Li, X.H. (1); Wang, L.R. (1)
Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Science, Xi'an 710119, China
Corresponding author:Liu, X. M.(liuxm@opt.ac.cn)
Source title:Laser Physics
Abbreviated source title:Laser Phys.
Volume:20
Issue:2
Issue date:February 2010
Publication year:2010
Pages:522-527
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 broadly tunable dual-wavelength erbium-doped ring fiber laser based on a high-birefringence fiber loop mirror (HiBi-FLM) and a polarization controller is demonstrated experimentally. The measured transmission spectrum of HiBi-FLM covers a wide range from 1525 to 1575 nm. The wavelength of proposed laser can be flexibly tunable during this range of ∼50 nm by adjusting the polarization controller. In addition, the spacing of two wavelengths is adjustable by changing the length of HiBi fiber. The dual-wavelength lasers with the HiBi fiber length of 1 and 2 m are experimentally demonstrated and compared. The experimental results show that the proposed laser can stably operate on two wavelengths simultaneously at room temperature, and the output peak power variation is about 0.5 dB during 40 min. © 2010 Pleiades Publishing, Ltd.
Number of references:19
Main heading:Mirrors
Controlled terms:Birefringence - Erbium - Fiber lasers - Fibers - Optical resonators - Optical sensors - Polarization - Wavelength
Uncontrolled terms:Dual wavelength laser - Dual-wavelength - Erbium doped - Fiber length - High birefringence fiber loop mirror - Output peak power - Polarization controllers - Ring fiber lasers - Room temperature - Transmission spectrums - Two wavelength
Classification code:744.4 Solid State Lasers - 751.1 Acoustic Waves - 753.1 Ultrasonic Waves - 801 Chemistry - 812 Ceramics, Refractories and Glass - 817 Plastics and Other Polymers: Products and Applications - 819.4 Fiber Products - 741.3 Optical Devices and Systems - 547.2 Rare Earth Metals - 701.1 Electricity: Basic Concepts and Phenomena - 711 Electromagnetic Waves - 711.1 Electromagnetic Waves in Different Media - 732.2 Control Instrumentation - 741.1 Light/Optics - 741.1.2 Fiber Optics
DOI:10.1134/S1054660X10030175
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 46>
Accession number:20104513370099
Title:Carbon dioxide gas sensor derived from a 547-hole microstructured polymer optical fiber preform
Authors:Wang, Jian (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
Corresponding author:Wang, L.(liliwang@opt.ac.cn)
Source title:Optics Letters
Abbreviated source title:Opt. Lett.
Volume:35
Issue:19
Issue date:October 1, 2010
Publication year:2010
Pages:3270-3272
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:In this Letter, we report a carbon dioxide gas sensor having 547 pieces of thin-film modified capillaries, which are derived from a microstructured polymer optical fiber preform. Compared with the conventional absorption-based sensor, the monolithic polymer capillary waveguide arrays have better sensitivity, because the huge sensing surfaces, composed of 547 pieces of dye-indicator-doped porous ethyl cellulose layers, interact directly with the gas molecules. As far as we know, a gas sensor based on multichannel capillary waveguide arrays has not been reported before. © 2010 Optical Society of America.
Number of references:10
Main heading:Chemical sensors
Controlled terms:Blood vessels - Carbon dioxide - Carbon fibers - Gas detectors - Optical fibers - Polymers - Preforming - Waveguides
Uncontrolled terms:A-carbon - Capillary waveguides - Carbon dioxide gas sensor - Conventional absorption - Ethyl cellulose - Gas molecules - Gas sensors - Microstructured polymer optical fibers - Monolithic polymers - Multi-channel - Sensing surface
Classification code:804.2 Inorganic Compounds - 804 Chemical Products Generally - 801 Chemistry - 815.1 Polymeric Materials - 741.1.2 Fiber Optics - 535.2.2 Metal Forming Practice - 461.2 Biological Materials and Tissue Engineering - 714.3 Waveguides
DOI:10.1364/OL.35.003270
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 47>
Accession number:20105213529091
Title:Affine-invariant SIFT descriptor with global context
Authors:Cao, Bei (1); Ma, CaiWen (1); Liu, ZhenTao (2)
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, CAS, Xi'an, China; (2) Xi'an University of Post and Telecommunications, Xi'an, China
Corresponding author:Cao, B.
Source title:Proceedings - 2010 3rd International Congress on Image and Signal Processing, CISP 2010
Abbreviated source title:Proc. - Int. Congr. Image Signal Process., CISP
Volume:1
Monograph title:Proceedings - 2010 3rd International Congress on Image and Signal Processing, CISP 2010
Issue date:2010
Publication year:2010
Pages:68-71
Article number:5647071
Language:English
ISBN-13:9781424465149
Document type:Conference article (CA)
Conference name:2010 3rd International Congress on Image and Signal Processing, CISP 2010
Conference date:October 16, 2010 - October 18, 2010
Conference location:Yantai, China
Conference code:83091
Sponsor:Yantai University
Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States
Abstract:The paper proposed a new image matching method combining affine-invariant SIFT feature descriptor with global context. Affine-SIFT (ASIFT) can find large numbers of correct matches even with great variation of camera axis orientation, however when there are several similar regions or objects between the query and search images, it may also produce many mismatches. Therefore, we intend to introduce global context to resolve ambiguities that can occur locally when an image has multiple similar regions. A global context vector that adds curvilinear shape information from a much larger neighborhood, thus reducing mismatches when multiple local descriptors are similar. We have tested our method on various images and compare matching accuracy between the ASIFT descriptor with global context to that without. ©2010 IEEE.
Number of references:16
Main heading:Image matching
Controlled terms:Signal processing
Uncontrolled terms:Affine invariance - Axis orientation - Descriptors - Global context - Local ambiguity - Local descriptors - Matching methods - Query and search - Shape information - SIFT Feature
Classification code:716.1 Information Theory and Signal Processing - 741 Light, Optics and Optical Devices
DOI:10.1109/CISP.2010.5647071
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 48>
Accession number:20102513018259
Title:Effect of self-generated magnetic fields on fast-electron beam divergence in solid targets
Authors:Yuan, X.H. (1); Robinson, A.P.L. (2); Quinn, M.N. (1); Carroll, D.C. (1); Borghesi, M. (3); Clarke, R.J. (2); Evans, R.G. (2); Fuchs, J. (5); Gallegos, P. (1); Lancia, L. (5); Neely, D. (2); Quinn, K. (3); Romagnani, L. (3); Sarri, G. (3); Wilson, P.A. (3); McKenna, P. (1)
Author affiliation:(1) SUPA Department of Physics, University of Strathclyde, Glasgow G4 0NG, United Kingdom; (2) Central Laser Facility, STFC Rutherford Appleton Laboratory, Didcot, Oxfordshire OX11 0QX, United Kingdom; (3) School of Mathematics and Physics, Queen's University Belfast, Belfast BT7 1NN, United Kingdom; (4) Blackett Laboratory, Imperial College London, London SW7 2AZ, United Kingdom; (5) Laboratoire Pour l'Utilisation des Lasers Intenses, Ecole Polytechnique, 91128 Palaiseau, France; (6) 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:New Journal of Physics
Abbreviated source title:New J. Phys.
Volume:12
Issue date:June 11, 2010
Publication year:2010
Article number:063018
Language:English
ISSN:13672630
Document type:Journal article (JA)
Publisher:Institute of Physics Publishing, Temple Back, Bristol, BS1 6BE, United Kingdom
Abstract:The collimating effect of self-generated magnetic fields on fast-electron transport in solid aluminium targets irradiated by ultra-intense, picosecond laser pulses is investigated in this study. As the target thickness is varied in the range of 25 μm to 1.4 mm, the maximum energies of protons accelerated from the rear surface are measured to infer changes in the fast-electron density and therefore the divergence of the fast-electron beam transported through the target. Purely ballistic spreading of the fast-electrons would result in a much faster decrease in the maximum proton energy with increasing target thickness than that measured. This implies that some degree of 'global' magnetic pinching of the fast-electrons occurs, particularly for thick (>400 μm) targets. Numerical simulations of electron transport are in good agreement with the experimental data and show that the pinching effect of the magnetic field in thin targets is significantly reduced due to disruption of the field growth by refluxing fast-electrons. © IOP Publishing Ltd and Deutsche Physikalische Gesellschaft.
Number of references:26
Main heading:Targets
Controlled terms:Computer simulation - Electron beams - Electron transitions - Electron transport properties - Magnetic fields - Magnetic materials - Protons - Pulsed laser applications
Uncontrolled terms:Electron densities - Electron transport - Experimental data - Fast electron beam - Numerical simulation - Picosecond laser pulse - Proton energy - Rear surfaces - Refluxing - Solid targets - Thin target
Classification code:932.1.1 Particle Accelerators - 932.1 High Energy Physics - 932 High Energy Physics; Nuclear Physics; Plasma Physics - 931.3 Atomic and Molecular Physics - 744.9 Laser Applications - 723.5 Computer Applications - 711.1 Electromagnetic Waves in Different Media - 708.4 Magnetic Materials - 701.2 Magnetism: Basic Concepts and Phenomena
DOI:10.1088/1367-2630/12/6/063018
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 49>
Accession number:20105013482887
Title:Analysis of bonding stress with high strength adhesive between the reflector and the mounts in space camera
Authors:Li, Yan (1); Hu, YongMing (1); Li, YingCai (1); Qu, YouShan (1); Ding, JiaoTeng (1)
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics of CAS, No.17 Xinxi Rd., Xi'an Hi-Tech Industrial Development Zone, Xi'an, China
Corresponding author:Li, Y.
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:7654
Monograph title:5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes
Issue date:2010
Publication year:2010
Article number:76541F
Language:English
ISSN:0277786X
CODEN:PSISDG
ISBN-13:9780819480842
Document type:Conference article (CA)
Conference name:5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes
Conference date:April 26, 2010 - April 29, 2010
Conference location:Dalian, China
Conference code:82770
Sponsor:The Chinese Optical Society (COS); CAS, The Institute of Optics and Electronics (IOE); The Society of Photo-Optical Instrumentation Engineers (SPIE)
Publisher:SPIE, P.O. Box 10, Bellingham, WA 98227-0010, United States
Abstract:The bond stress is analyzed when the optics were attached to their mounts with high strength adhesive in space camera. The model was founded that a circular planar reflector supported by one, three, six or twelve adhesive points, which evenly distributed on different circles. The surface deformation of reflector is mainly caused by the shrinkage after solidity. The functional relation was deduced between the bonding force of the reflector and the characteristic dimension of the adhesive spot using piecewise function, and then analyzing the RMS error of no gravity assuming that the adhesive spot is fixed connect to the reflector using Nastran. The analytical RMS error was the aberration which added by solidification of adhesive. The calculation result is in good agreement with the experiment results. This analyzing method will be useful for the microstress clamping of high performance reflector system for application in space optical systems. © 2010 Copyright SPIE - The International Society for Optical Engineering.
Number of references:4
Main heading:Reflection
Controlled terms:Cameras - Manufacture - Mirrors - Optical telescopes - Optical testing - Shrinkage
Uncontrolled terms:Bond stress - Bonding forces - Bonding stress - Functional relation - High strength - Microstresses - NASTRAN - Piecewise functions - Planar reflectors - Reflector system - RMS errors - Space cameras - Space optical system - Surface deformation
Classification code:537.1 Heat Treatment Processes - 711 Electromagnetic Waves - 741.3 Optical Devices and Systems - 742.2 Photographic Equipment - 951 Materials Science
DOI:10.1117/12.867760
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 50>
Accession number:IP51149356
Title:Photon counting imaging UV detector based on Vernier anode
Authors:Yan, Qiurong (1); Zhao, Baosheng (1); Liu, Yong'an (1); Yang, Hao (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 100039, China
Corresponding author:Yan, Q.(yanqiurong@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
Publication year:2010
Language:English
ISSN:01689002
CODEN:NIMAER
Document type:Article in Press
Abstract:The long slit spectrograph is one of the instruments onboard WSO-UV, a multi-national space astronomy project led by Russia. According to the report, both the FUV and the NUV channels of LSS choose the MCP detector in the focal plane and the detector will be read out using the charge induction technique. According to the desired performance, Vernier anode will be one of the optimum readout schemes. In this paper, the structure and parameters of FUV and NUV detectors have been basically determined. The decode principle and design of Vernier anode are introduced in detail. Preliminary experimental results show that decoding algorithm and design of Vernier anode are correct and reveal a spatial resolution superior to 100 μm according to the resolution test results. Ways to improve the imaging performance were proposed. © 2010 Elsevier B.V. All rights reserved.
Main heading:Detectors
Uncontrolled terms:Decoding algorithm - Focal Plane - Imaging performance - Photon counting - Resolution tests - Space astronomy - Spatial resolution - UV detector
Classification code:914 Safety Engineering
DOI:10.1016/j.nima.2010.10.082
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 51>
Accession number:20105213529849
Title:A novel and robust axis extraction method
Authors:Cao, Bei (1); Ma, CaiWen (1); Liu, ZhenTao (2)
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, CAS, Xi'an, China; (2) Xi'an University of Post and Telecommunications, Xi'an, China
Corresponding author:Cao, B.
Source title:Proceedings - 2010 3rd International Congress on Image and Signal Processing, CISP 2010
Abbreviated source title:Proc. - Int. Congr. Image Signal Process., CISP
Volume:2
Monograph title:Proceedings - 2010 3rd International Congress on Image and Signal Processing, CISP 2010
Issue date:2010
Publication year:2010
Pages:875-879
Article number:5646878
Language:English
ISBN-13:9781424465149
Document type:Conference article (CA)
Conference name:2010 3rd International Congress on Image and Signal Processing, CISP 2010
Conference date:October 16, 2010 - October 18, 2010
Conference location:Yantai, China
Conference code:83091
Sponsor:Yantai University
Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States
Abstract:This paper presents a novel and robust method for accurately extracting axis equation from axis symmetry objects. Our method combines Hough transform with centroid analysis technique to output sub-pixel axis equation. It is robust even in imperfect image qualities for fully use of regional grayscale pixel values while not relying on edges of objects. The whole process requires no information other than the input grayscale images. The results illustrate that our method is capable of extracting accurate axis while achieving near real-time performance. ©2010 IEEE.
Number of references:8
Main heading:Feature extraction
Controlled terms:Hough transforms - Image quality - Mathematical transformations - Pixels - Signal processing
Uncontrolled terms:Axis feature - Centroid analysis - Extraction method - Gray scale - Gray-scale images - Pixel values - Real time performance - Robust methods - Sub pixels - Whole process
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 - 921.3 Mathematical Transformations
DOI:10.1109/CISP.2010.5646878
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 52>
Accession number:20104113287814
Title:Vectorial structure of a hard-edged-diffracted four-petal Gaussian beam 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:Optics Communications
Abbreviated source title:Opt Commun
Volume:283
Issue:23
Issue date:December 1, 2010
Publication year:2010
Pages:4586-4593
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 vector angular spectrum method and the stationary phase method and the fact that a circular aperture function can be expanded into a finite sum of complex Gaussian functions, the analytical vectorial structure of a four-petal Gaussian beam (FPGB) diffracted by a circular aperture is derived in the far field. The energy flux distributions and the diffraction effect introduced by the aperture are studied and illustrated graphically. Moreover, the influence of the f-parameter and the truncation parameter on the non-paraxiality is demonstrated in detail. In addition, the approximate formulas obtained in this paper can degenerate into un-apertured case when the truncation parameter tends to infinity. This work is beneficial to strengthen the understanding of vectorial properties of the FPGB diffracted by a circular aperture. © 2010 Elsevier B.V. All rights reserved.
Number of references:26
Main heading:Gaussian beams
Controlled terms:Approximation algorithms - Gaussian distribution - Gaussian noise (electronic) - Spectrum analysis
Uncontrolled terms:Angular spectrum method - Approximate formulas - Circular aperture - Complex Gaussian functions - Diffraction effects - Energy fluxes - Far field - Four-petal Gaussian beam - Stationary phase methods - Truncation parameter - Vectorial structure
Classification code:711 Electromagnetic Waves - 713 Electronic Circuits - 716 Telecommunication; Radar, Radio and Television - 921 Mathematics - 922.1 Probability Theory
DOI:10.1016/j.optcom.2010.06.097
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 53>
Accession number:20105113512505
Title:Properties of photo-thermal-refractive glass
Authors:Ren, Qing (1); Lu, Min (1); Zou, Kuai-Sheng (1); Li, Wei-Nan (1); Zhang, Xiao-Liang (2); Yu, Feng-Xia (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) Shool of Materials Science and Engineering, Changchun University of Science and Technology, Changchun 130022, China
Corresponding author:Ren, Q.(rengqing-06@163.com)
Source title:Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering
Abbreviated source title:Hongwai yu Jiguang Gongcheng Infrared Laser Eng.
Volume:39
Issue:5
Issue date:October 2010
Publication year:2010
Pages:857-861
Language:Chinese
ISSN:10072276
Document type:Journal article (JA)
Publisher:Chinese Society of Astronautics, P.O. Box 225-32, Tianjin, 300192, China
Abstract:Photo-thermal-refractive(PTR) glass is fabricated by high temperature melt process. PTR glass, a kind of sodium- zinc-aluminum-silicate glass doped with silver, cerium and fluorine, possesses both photosensitive and heat-sensitive characters. In the study, PTR glass was firstly exposed by ultraviolet light, and then after the heat treatment of the sample, the measurement of ultraviolet-visible-near infrared transmissivity spectrum and the X-ray diffraction of exposure part was performed. According to the results, the working window of PTR glass is between 400 nm and 2800 nm. The best exposure wavelength of PTR glass is 305 nm. The micro-crystallization of PTR glass can be controlled by exposure dose and conditions of two stepped heat treatment. During the treatment processes mentioned above, NaF crystal was precipitated. Because crystal particles are very tiny, visible light is not scattered in the glass.
Number of references:14
Main heading:Photosensitive glass
Controlled terms:Cerium - Fluorine - Heat treatment - Organic polymers - Silicates - Sodium - Ultraviolet radiation - X ray diffraction
Uncontrolled terms:Crystal particles - Exposure - Exposure dose - High temperature melts - Near Infrared - Photo-thermal - Refractive glass - Transmissivity - Treatment process - Ultra-violet light - Visible light - Zinc-aluminum
Classification code:931.3 Atomic and Molecular Physics - 815.1.1 Organic Polymers - 812 Ceramics, Refractories and Glass - 804 Chemical Products Generally - 741.1 Light/Optics - 549.1 Alkali Metals - 547.2 Rare Earth Metals - 537.1 Heat Treatment Processes - 414 Masonry Materials
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 54>
Accession number:20102112950554
Title:Subspace Learning
Authors:Li, Xuelong (1); Tao, Dacheng (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) School of Computer Engineering, Nanyang Technological University, 639798, Singapore
Corresponding author:Li, X.(xuelong_li@opt.ac.cn)
Source title:Neurocomputing
Abbreviated source title:Neurocomputing
Volume:73
Issue:10-12
Issue date:June 2010
Publication year:2010
Pages:1539-1540
Language:English
ISSN:09252312
CODEN:NRCGEO
Document type:Journal article (JA)
Publisher:Elsevier, P.O. Box 211, Amsterdam, 1000 AE, Netherlands
DOI:10.1016/j.neucom.2010.02.012
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 55>
Accession number:20095112559604
Title:SOA-based actively mode-locked fiber ring laser by forward injecting an external pulse train
Authors:Yan, Shuangyi (1); Zhang, Jian-Guo (2); 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) Department of Electrical, Computer and Communications Engineering, London South Bank University, 103 Borough Road, London, SE1 0AA, United Kingdom
Corresponding author:Yan, S.(nechoyan@gmail.com)
Source title:Optics Communications
Abbreviated source title:Opt Commun
Volume:283
Issue:1
Issue date:January 1, 2010
Publication year:2010
Pages:87-92
Language:English
ISSN:00304018
CODEN:OPCOB8
Document type:Journal article (JA)
Publisher:Elsevier, P.O. Box 211, Amsterdam, 1000 AE, Netherlands
Abstract:An actively mode-locked fiber ring laser based on cross-gain modulation (XGM) in a semiconductor optical amplifier (SOA) is demonstrated to operate stably with a simple configuration. By forward injecting an easily-generated external pulse train, the mode-locked fiber laser can generate an optical-pulse sequence with pulsewidth about 6 ps and average output power about 7.9 mW. The output pulses show an ultra-low RMS jitter about 70.7 fs measured by a RF spectrum analyzer. The use of the proposed forward-injection configuration can realize the repetition-rate tunability from 1 to 15 GHz for the generated optical-pulse sequences. By employing a wavelength-tunable optical band-pass filter in the laser cavity, the operation wavelength of the designed SOA-based actively mode-locked fiber laser can be tuned continuously in a wide span between 1528 and 1565 nm. The parameters of external-injection optical pulses are studied experimentally to optimize the mode-locked fiber laser. © 2009 Elsevier B.V.
Number of references:25
Main heading:Pulse generators
Controlled terms:Bandpass filters - Fiber lasers - Fibers - Jitter - Light amplifiers - Optoelectronic devices - Pulsed laser applications - Ring lasers - Semiconductor lasers - Spectrum analyzers
Uncontrolled terms:Cross gain modulation - Fiber-ring lasers - Laser cavity - Mode locked fiber laser - Mode-locked - Operation wavelength - Optical bandpass filters - Optical pulse - Output power - Output pulse - Pulse sequence - Pulse train - Pulsewidths - RF-spectrum - Tunabilities - Wavelength tunable
Classification code:744.1 Lasers, General - 744.4 Solid State Lasers - 744.4.1 Semiconductor Lasers - 744.9 Laser Applications - 812 Ceramics, Refractories and Glass - 817 Plastics and Other Polymers: Products and Applications - 819.4 Fiber Products - 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 - 744 Lasers - 703.2 Electric Filters - 712.1 Semiconducting Materials - 713.4 Pulse Circuits - 714.2 Semiconductor Devices and Integrated Circuits - 716 Telecommunication; Radar, Radio and Television - 717 Optical Communication - 717.2 Optical Communication Equipment - 718 Telephone Systems and Related Technologies; Line Communications - 722.3 Data Communication, Equipment and Techniques - 741.1.2 Fiber Optics - 741.3 Optical Devices and Systems
DOI:10.1016/j.optcom.2009.09.032
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 56>
Accession number:20103513202122
Title:Blind image restoration based on automatic blur identify and total variation minimization
Authors:Su, Xiuqin (1); Li, Xiang (1); Ji, Lei (1)
Author affiliation:(1) Key Laboratory of Ultrafast Photoelectric Diagnostics Technology, Xi'an Institute of Optics and Precision Mechanics, Xi'an, Shaanxi, 710119, China; (2) Graduate College of Chinese Academy of Science, Beijing, 100039, China
Corresponding author:Su, X.(xqsu@opt.ac.cn)
Source title:2010 International Conference on Mechanic Automation and Control Engineering, MACE2010
Abbreviated source title:Int. Conf. Mech. Autom. Control Eng., MACE
Monograph title:2010 International Conference on Mechanic Automation and Control Engineering, MACE2010
Issue date:2010
Publication year:2010
Pages:2943-2946
Article number:5536517
Language:English
ISBN-13:9781424477388
Document type:Conference article (CA)
Conference name:2010 International Conference on Mechanic Automation and Control Engineering, MACE2010
Conference date:June 26, 2010 - June 28, 2010
Conference location:Wuhan, China
Conference code:81484
Sponsor:IEEE Beijing Section CSS Chapter; Huazhong University of Science and Technology; Wuhan University of Science and Technology
Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States
Abstract:In this paper, an adaptive blind image restoration algorithm is proposed. According to the feature that the certain blur may lead to the specific component distortion in the cepstral domain, we develop an automatic algorithm using Fourier-Mellin transform to classify and identify the point spread function (PSF) with cepstrum: for the usual types of blur, such as linear motion blur and defocus blur, we restore it with Wiener filter; while for others, we propose an improved total variation (TV) blind restoration algorithm. The algorithm combines the typical methods and blind methods of image restoration, achieving the adaptive blind image restoration. Experimental results show that it is effective in restoring degraded images under different environments, and it improves the restoring performance significantly under the presence of high noise level. ©2010 IEEE.
Number of references:7
Main heading:Fourier transforms
Controlled terms:Algorithms - Identification (control systems) - Image reconstruction - Mechanics - Optical transfer function - Restoration
Uncontrolled terms:Blind image restoration - Blur identification - Cepstrum - Fourier - Total variation
Classification code:931.1 Mechanics - 921.3 Mathematical Transformations - 921 Mathematics - 741.1 Light/Optics - 741 Light, Optics and Optical Devices - 731.1 Control Systems - 723 Computer Software, Data Handling and Applications - 409 Civil Engineering, General - 402 Buildings and Towers
DOI:10.1109/MACE.2010.5536517
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 57>
Accession number:20113714314742
Title:A sub-pixel centroid algorithm for star image based on gaussian distribution
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:53
Issue:182
Issue date:2010
Publication year:2010
Pages:307-310
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 centroid algorithm is proposed to acquire better centroid performance in a star image. Since photons incident on pixels of stars present a Gaussian point spread function (PSF), so, the centroid locations on the x and y-axis are calculated using the pixel intensity ratio and expand the Gaussian PSF to polynomials with respect to the centroid location. The angular separation error between star pairs is used to verify the proposed algorithm indirectly. The result clearly shows that the centroid accuracy achieves 1/33 of a pixel and is about two times better than the moment method, indicating the new algorithm is effective. © 2011 The Japan Society for Aeronautical and Space Sciences.
Number of references:9
Main heading:Pixels
Controlled terms:Algorithms - CCD cameras - Gaussian distribution - Image processing - Optical transfer function - Stars
Uncontrolled terms:Angular separation - Centroid algorithm - Gaussian point - Gaussians - Pixel intensities - Star images - Sub-pixel centroids
Classification code:921 Mathematics - 741.1 Light/Optics - 741 Light, Optics and Optical Devices - 922.1 Probability Theory - 723.5 Computer Applications - 714.2 Semiconductor Devices and Integrated Circuits - 657.2 Extraterrestrial Physics and Stellar Phenomena - 723 Computer Software, Data Handling and Applications
DOI:10.2322/tjsass.53.307
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 58>
Accession number:20104413336408
Title:Plasma properties of 532 nm laser-ablated aluminum E414d target with different power densities
Authors:Luo, Wenfeng (1); Sun, Qibing (1); Gao, Cunxiao (1); Tang, Jie (1); Wang, Haojing (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
Corresponding author:Luo, W.(luowf@opt.ac.cn)
Source title:Plasma Science and Technology
Abbreviated source title:Plasma Sci. Technol.
Volume:12
Issue:4
Issue date:August 2010
Publication year:2010
Pages:385-390
Language:English
ISSN:10090630
Document type:Journal article (JA)
Publisher:Institute of Physics Publishing, Temple Back, Bristol, BS1 6BE, United Kingdom
Abstract:Optical emission spectra of the plasma generated by a 532 nm Nd:YAG laser irradiation onto a standard aluminum alloy (E414d) was recorded and analyzed. The electron temperature was determined using the Boltzmann plot method with three aluminum spectral lines at 236.71 nm, 257.509 nm and 308.215 nm, whereas the electron density was inferred by measuring the Stark broadening line profile of Al(II) 281.619 nm. The experimental results confirmed that the local thermodynamic equilibrium was valid and the plasma was optically thin. The spectral line intensity increased initially with the increase in laser irradiance and saturated at higher irradiance levels. Results showed that the energy losses due to the reflection of laser beam from the plasma itself were insignificant. The absorption in the plasma through inverse bremsstrahlung and two-photon ionization were studied. At the same time, the variation of transition probability ratio of Al(I) 309.28 nm to Al(I) 308.21 nm with laser power density was also studied.
Number of references:23
Main heading:Neodymium lasers
Controlled terms:Aluminum - Electron energy loss spectroscopy - Emission spectroscopy - Energy dissipation - Multiphoton processes - Photoionization - Plasmas
Uncontrolled terms:532 nm laser - Boltzmann plot - Electron densities - Energy loss - Inverse bremsstrahlungs - Irradiance level - Laser irradiance - Laser power density - LIBS - Line profiles - Local thermodynamic equilibrium - Nd: YAG laser irradiation - Optical emission spectra - Plasma properties - Power densities - Spectral line - Spectral line intensities - Stark broadenings - Transition probabilities - Two photon ionization
Classification code:932.3 Plasma Physics - 801 Chemistry - 744.4 Solid State Lasers - 744.1 Lasers, General - 741.1 Light/Optics - 541.1 Aluminum - 525.4 Energy Losses (industrial and residential)
DOI:10.1088/1009-0630/12/4/01
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 59>
Accession number:20101812912718
Title:Ultracompact wave plates by air holes 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 Institute of Post and Telecommunications, Xi'an 710061, China; (4) Department of Electrical and Computer Engineering, McMaster University, ON, Canada
Corresponding author:Zhang, W.(wfu.zhang@gmail.com)
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:7609
Monograph title:Photonic and Phononic Crystal Materials and Devices X
Issue date:2010
Publication year:2010
Article number:76091H
Language:English
ISSN:0277786X
CODEN:PSISDG
ISBN-13:9780819480057
Document type:Conference article (CA)
Conference name:Photonic and Phononic Crystal Materials and Devices X
Conference date:January 26, 2010 - January 28, 2010
Conference location:San Francisco, CA, United states
Conference code:80108
Sponsor:The Society of Photo-Optical Instrumentation Engineers (SPIE)
Publisher:SPIE, P.O. Box 10, Bellingham, WA 98227-0010, United States
Abstract:Ultracompact wave plate (UWP) will be one of the key elements in future all-optical photonic integrated circuits (PICs). In this paper, we propose UWPs based on periodic dielectric waveguides (PDWs) with air holes in conventional dielectric waveguides. The mode characteristics (for both TE and TM) and birefringence of PDWs are calculated by plane wave method (PWM). The transmission efficiencies and phase changing of TE and TM waves in PDW are obtained by finite-difference time-domain (FDTD) scheme. Based on the PDWs, the quarter-wave plates (QWPs) and half-wave plates (HWPs) are designed. Calculating results show that the proposed PDW has large birefringence (Δn>1) and can introduce 2π phase difference with a short length being less than λ. The size of low order UWPs are compact. The transmission efficiency of PDW is improved by taper structure. Based on the taper PDW, ultra-wide band (>100 nm) achromatic QWP is designed. Profiting from the waveguide guiding, the UWPs have low beam divergence and can be easily integrated with other photonic components. The UWPs have many potential applications in future PIC systems such as optical communications, optical measurements and sensors. © 2010 Copyright SPIE - The International Society for Optical Engineering.
Number of references:40
Main heading:Photonic devices
Controlled terms:Birefringence - Dielectric waveguides - Finite difference time domain method - Optical communication - Optical data processing - Phonons - Photonic crystals - Plates (structural components)
Uncontrolled terms:Air holes - All-optical - Finite-Difference Time-Domain schemes - Half waveplate - Key elements - Large birefringence - Low order - Low-beam divergence - Mode characteristics - Optical measurement - Periodic dielectric waveguides - Periodic dielectric waveguides (PDWs) - Phase difference - Photonic components - Photonic integrated circuits - Plane wave methods - Potential applications - Quarter wave-plate - Taper structure - TE and TM waves - Transmission efficiency - Waveplates
Classification code:933.1 Crystalline Solids - 931.3 Atomic and Molecular Physics - 921 Mathematics - 751.1 Acoustic Waves - 744 Lasers - 741.3 Optical Devices and Systems - 741.1 Light/Optics - 723.2 Data Processing and Image Processing - 717.1 Optical Communication Systems - 717 Optical Communication - 714.3 Waveguides - 701.1 Electricity: Basic Concepts and Phenomena - 408.2 Structural Members and Shapes
DOI:10.1117/12.845956
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 60>
Accession number:20100312639786
Title:Double differential cross sections of light charged particle emission in neutron induced reactions on <sup>54,56,57,58</sup>Fe
Authors:Zhang, Zhengjun (1); Han, Yinlu (3); Cai, Chonghai (4)
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, 710119, China; (2) Department of Physics, Northwest University, Xi'an, 710069, China; (3) China Institute of Atomic Energy, P.O. Box 275(41), Beijing, 102413, China; (4) Department of Physics, Nankai University, Tianjin, 300071, China
Corresponding author:Han, Y.(hanyl@ciae.ac.cn)
Source title:Annals of Nuclear Energy
Abbreviated source title:Ann Nucl Energy
Volume:37
Issue:2
Issue date:February 2010
Publication year:2010
Pages:130-143
Language:English
ISSN:03064549
CODEN:ANENDJ
Document type:Journal article (JA)
Publisher:Elsevier Ltd, Langford Lane, Kidlington, Oxford, OX5 1GB, United Kingdom
Abstract:The energy spectra and double differential cross sections of the light composite particle (deuteron, triton, helium and alpha-particle) emissions for n +<sup> 54,56,57,58</sup>Fe reaction are studied by integrating the optical model, the intra-nuclear cascade model, direct reaction theories, equilibrium reaction theory and the exciton model which included the improved Iwamoto-Harada model. Theoretical calculated results are compared with existing experimental data. © 2009 Elsevier Ltd. All rights reserved.
Number of references:43
Main heading:Spectroscopy
Controlled terms:Deuterium - Helium
Uncontrolled terms:CASCADE model - Direct reactions - Double differential cross sections - Energy spectra - Equilibrium reactions - Experimental data - Light charged particles - Light composites - Neutron-induced reactions - Optical models
Classification code:801 Chemistry - 801.4.2 Radiation Chemistry - 803 Chemical Agents and Basic Industrial Chemicals - 804 Chemical Products Generally - 931.3 Atomic and Molecular Physics - 932.2 Nuclear Physics
DOI:10.1016/j.anucene.2009.11.013
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 61>
Accession number:20104113280444
Title:Determination of dispersion and nonlinear coefficients of photonic crystal fibers by degenerated FWM method
Authors:Ge, Wenping (1); Lin, Aoxiang (1); Guintrand, Cyril (1); Toulouse, Jean (1)
Author affiliation:(1) Center for Optical Technologies and Physics Department, Lehigh University, Bethlehem, PA 18015, United States; (2) College of Information Science and Engineering, Xinjiang University, Urumqi, Xinjiang, 830046, China; (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
Corresponding author:Ge, W.(wenpingge@yahoo.com)
Source title:Lasers and Electro-Optics/Quantum Electronics and Laser Science Conference: 2010 Laser Science to Photonic Applications, CLEO/QELS 2010
Abbreviated source title:Lasers and Electro-Optics/Quantum Electron. Laser Sci. Conf.: Laser Sci. Photonic Appl., CLEO/QELS
Monograph title:Lasers and Electro-Optics/Quantum Electronics and Laser Science Conference: 2010 Laser Science to Photonic Applications, CLEO/QELS 2010
Issue date:2010
Publication year:2010
Article number:5500405
Language:English
ISBN-13:9781557528902
Document type:Conference article (CA)
Conference name:Lasers and Electro-Optics/Quantum Electronics and Laser Science Conference: 2010 Laser Science to Photonic Applications, CLEO/QELS 2010
Conference date:May 16, 2010 - May 21, 2010
Conference location:San Jose, CA, United states
Conference code:81787
Publisher:Association for Computing Machinery, 1515 Broadway, 17th Floor, New York, NY 10036-5701, United States
Abstract:By using degenerated four wave mixing (FWM) method and counting the efficiency of the newly created frequency, we easily obtained dispersion, dispersion slope and nonlinear coefficients by fitting the experimental data with several well-known functions. © 2010 Optical Society of America.
Number of references:9
Main heading:Dispersion (waves)
Controlled terms:Four wave mixing - Photonic crystal fibers - Photonic crystals
Uncontrolled terms:Degenerated four-wave mixing - Dispersion slopes - Experimental data - Nonlinear coefficient
Classification code:711.1 Electromagnetic Waves in Different Media - 933.1 Crystalline Solids - 951 Materials Science
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 62>
Accession number:20103113111312
Title:Optical system design of space camera with large F number and long focal length
Authors:Li, Xuyang (1); Li, Yingcai (1); Ma, Zhen (1); Yi, Hongwei (1); Feng, Guangjun (1)
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Science, Xi'an, Shaanxi 710119, China; (2) Graduate University of Chinese Academy of Science, Beijing 100039, China
Corresponding author:Li, X.(lixuyang2004@126.com)
Source title:Guangxue Xuebao/Acta Optica Sinica
Abbreviated source title:Guangxue Xuebao
Volume:30
Issue:7
Issue date:July 2010
Publication year:2010
Pages:2093-2097
Language:Chinese
ISSN:02532239
CODEN:GUXUDC
Document type:Journal article (JA)
Publisher:Chinese Optical Society, P.O. Box 80, Xi'an, 710068, China
Abstract:With the development of space technology, the optical system design must be satisfied with the lastest demand due to the ground sample distance (GSD) steadily improving. The issues of the optical system design is discussed, the space optical system design principle with large F number, long focal length is analyzed and a reflective optical system which is characterized by the spectrum band 500~800 nm, focal length of 7200 mm and F number of 14.4 is designed. The result indicates that the field angle reaches 1.6°, the ground width reaches 12.5 km and the graund sample distance (GSD) reaches 0.62 m at 450 km orbit, the quality of image approaches the diffraction limited, modulation transfer function (MTF) reaches 0.38 at the Nyquist frequency of 50 lp/mm with 6% central obscure, and optical system distortion is less than 0.5%. So this kind of optical system can meet the demand for the use of high resolution space cameras. At the same time, the large F number, long focal length design principle are approved.
Number of references:16
Main heading:Optical systems
Controlled terms:Cameras - Focusing - Optical design
Uncontrolled terms:Design Principles - Diffraction limited - F number - Field angle - Focal lengths - Ground sample distances - High resolution - Long focal length - Modulation transfer function - Nyquist frequency - Optical system designs - Reflective optical system - Space cameras - Space optical system - Space technologies - Spectrum bands
Classification code:711.1 Electromagnetic Waves in Different Media - 741.1 Light/Optics - 741.3 Optical Devices and Systems - 742.2 Photographic Equipment - 751.1 Acoustic Waves
DOI:10.3788/AOS20103007.2093
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 63>
Accession number:20103013104212
Title:The effect of the laser interference lithography patterns when substrate tilted
Authors:Zhao, Xiaoxia (1); Wang, Hongying (1); Xie, Yongjun (2); Fan, Wenhui (2)
Author affiliation:(1) Physical Department, Xi'an University of Arts and Science, Xi'an, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, CAS, Xi'an, China
Corresponding author:Zhao, X.(zxxljw@opt.ac.cn)
Source title:2010 Symposium on Photonics and Optoelectronic, SOPO 2010 - Proceedings
Abbreviated source title:Symp. Photonics Optoelectron., SOPO - Proc.
Monograph title:2010 Symposium on Photonics and Optoelectronic, SOPO 2010 - Proceedings
Issue date:2010
Publication year:2010
Article number:5504313
Language:English
ISBN-13:9781424449644
Document type:Conference article (CA)
Conference name:International Symposium on Photonics and Optoelectronics, SOPO 2010
Conference date:June 19, 2010 - June 21, 2010
Conference location:Chengdu, China
Conference code:81219
Sponsor:IEEE Photonics Society; Sichuan University; Chongqing University; University of Electronic Science and Technology of China; Chinese Quantum Electronics and Optoelectronics Society (CQOES)
Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States
Abstract:The effect of the tilted substrate on the lithography patterns in maskless Laser Interference Lithography (MLIL) was numerically and experimentally studied. The experiments showed that the period of interference patterns becomes larger with increasing tilt angles of the substrate, as is in good agreement with theoretical analysis. It was also shown that there is no evident change when the rotational angle was less than 3<sup>0</sup> in our experiment. The significance of our analytical results for MLIL and the fabrication of integrated circuit was discussed. ©2010 IEEE.
Number of references:8
Main heading:Substrates
Controlled terms:Photolithography
Uncontrolled terms:Analytical results - Dual-beam - Interference patterns - Laser interference lithography - Mask less - Rotational angle - Tilt angle - Tilted substrate
Classification code:461 Bioengineering and Biology - 712.1 Semiconducting Materials - 714.2 Semiconductor Devices and Integrated Circuits - 745.1 Printing - 801 Chemistry - 813.1 Coating Techniques
DOI:10.1109/SOPO.2010.5504313
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 64>
Accession number:20103413187327
Title:Moving corner-cube mirror interferometer and reflection characteristic of corner-cube mirror
Authors:Yang, Qinghua (1)
Author affiliation:(1) Key Laboratory of Spectral Imaging Technology, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China
Corresponding author:Yang, Q.(y00102@gmail.com)
Source title:Applied Optics
Abbreviated source title:Appl. Opt.
Volume:49
Issue:21
Issue date:July 20, 2010
Publication year:2010
Pages:4088-4095
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 novel moving corner-cube mirror interferometer (MCCMI) is presented. It has neither tilt nor shearing problems. It consists of one moving corner-cube mirror (MCCM), one fixed double-sided mirror (FDSM), one fixed plane mirror, and one beam splitter. The FDSM is a plane-parallel glass plate with both faces coated with high-reflectivity films. The effect of a FDSM tilt is analyzed. The optical path difference (OPD) is created by the straight reciprocating motion of the MCCM, and the OPD value is four times the displacement of the MCCM. The reflection characteristic of the corner-cube mirror (CCM) is analyzed by means of the vector expression, and the formulas of deviation angle of a CCM are derived. The effect of a MCCM deviation angle is analyzed. The new MCCMI is very suitable for high-resolution Fourier-transform infrared spectrometers used for atmospheric sounding. © 2010 Optical Society of America.
Number of references:31
Main heading:Mirrors
Controlled terms:Angle measurement - Geometry - Interferometers
Uncontrolled terms:A-plane - Atmospheric sounding - Beam splitters - Corner cubes - Deviation angles - Fixed planes - Glass plate - High reflectivity - High resolution - Optical path difference - Reciprocating motion - Reflection characteristics
Classification code:741.3 Optical Devices and Systems - 921 Mathematics - 941.3 Optical Instruments - 943.2 Mechanical Variables Measurements
DOI:10.1364/AO.49.004088
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 65>
Accession number:20111013721889
Title:Multifocus noisy image fusion algorithm using the contourlet transform
Authors:Cao, Jian-Zhong (1); Zhou, Zuo-Feng (1); Wang, Hao (1); Liu, Wei-Hua (2)
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, 710119, China; (2) School of Electronics and Information, Northwestern Polytechnical University, Xi'an, China
Corresponding author:Cao, J.-Z.
Source title:2010 International Conference on Multimedia Technology, ICMT 2010
Abbreviated source title:Int. Conf. Multimedia Technol., ICMT
Monograph title:2010 International Conference on Multimedia Technology, ICMT 2010
Issue date:2010
Publication year:2010
Article number:5631461
Language:English
ISBN-13:9781424478743
Document type:Conference article (CA)
Conference name:2010 International Conference on Multimedia Technology, ICMT 2010
Conference date:October 29, 2010 - October 31, 2010
Conference location:Ningbo, China
Conference code:83981
Sponsor:IEEE Nanjing Section GRSS Chapter; Southwest Petroleum University of China; College of Computer and Information of Hohai University
Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States
Abstract:Multifocus image fusion deals with a stack of images that were acquired with a different focus point to get an image with all the objects in the scene full focused. Considered the noise effect, in this paper, we proposed a multifocus noisy image fusion algorithm using the contourlet transform. Utilizing the captured directional information by the contourlet transform, the directional windows are used to determine the fusion weight. The experiment results demonstrate the higher performance of the proposed multifocus noisy image fusion algorithm compared to the wavelet-based multifocus noisy image fusion method. ©2010 IEEE.
Number of references:14
Main heading:Image fusion
Controlled terms:Algorithms
Uncontrolled terms:Contourlet transform - Contourlets - Directional information - Directional windows - Focus points - Multi-focus - Multifocus image fusion - Noise effects - Noisy image
Classification code:723 Computer Software, Data Handling and Applications - 723.2 Data Processing and Image Processing - 921 Mathematics
DOI:10.1109/ICMULT.2010.5631461
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 66>
Accession number:20110813673686
Title:Multispectral images compression based on JPEG2000
Authors:Wei, Junxia (1); Wei, Ruyi (1); Gao, Xiaohui (1); Duan, Xiaofeng (1)
Author affiliation:(1) Key Laboratory of Spectral Imaging Technology, 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:Wei, J.
Source title:2nd International Conference on Information Engineering and Computer Science - Proceedings, ICIECS 2010
Abbreviated source title:Int. Conf. Inf. Eng. Comput. Sci. - Proc., ICIECS
Monograph title:2nd International Conference on Information Engineering and Computer Science - Proceedings, ICIECS 2010
Issue date:2010
Publication year:2010
Article number:5677876
Language:English
ISBN-13:9781424479412
Document type:Conference article (CA)
Conference name:2nd International Conference on Information Engineering and Computer Science, ICIECS 2010
Conference date:December 25, 2010 - December 26, 2010
Conference location:Wuhan, China
Conference code:83781
Sponsor:Res. Assoc. Mod. Educ. Comput. Sci. (RAMECS); Wuhan University; Wuhan University and Technology; National Technology University of Ukraine; Columbia University; Hubei University of Technology
Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States
Abstract:Multispectral image compression which are based on the one-, two- and three-dimensional wavelet transforms has been existed in many papers. Existing image compression algorithms have proved to be very efficient in compressing these kinds of images. We adopted the principal component analysis , clustering and spectral angle cosine to classify and compress in spectral dimension. In this article, we present lossy compression based wavelet; the information loss is measured by Peak-Signal-to-Noise Ratio (PSNR). We introduce the spatial compression based on JPEG2000 and improved embedded zerotree (EZW) encoding. We use the different compression rate to compress image, when the compression rate is 10:1, subjective value and object value is optimal. Not only the single band, but also the composing image, the spectral curve is nearly same. ©2010 IEEE.
Number of references:5
Main heading:Data compression
Controlled terms:Computer science - Digital image storage - Image coding - Image compression - Principal component analysis - Signal to noise ratio - Three dimensional - Wavelet transforms
Uncontrolled terms:Compression rates - Dimensional wavelet transforms - EZW - Image compression algorithms - Information loss - JPEG2000 - Lossy compressions - Multispectral images - Multispectral-image compression - Peak signal-to-noise ratio - PSNR - Single band - Spatial compression - Spectral angles - Spectral curves - Spectral dimensions - Wavelt compression - Zerotrees
Classification code:922.2 Mathematical Statistics - 921.3 Mathematical Transformations - 741.3 Optical Devices and Systems - 741 Light, Optics and Optical Devices - 723.5 Computer Applications - 723 Computer Software, Data Handling and Applications - 722 Computer Systems and Equipment - 721 Computer Circuits and Logic Elements - 716.1 Information Theory and Signal Processing
DOI:10.1109/ICIECS.2010.5677876
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 67>
Accession number:20104913451818
Title:Global motion compensation for image sequences and motion object detection
Authors:Zhang, Shun (1); Su, Xiuqin (1); Xie, Liyin (1)
Author affiliation:(1) Key Laboratory of Ultrafast Photoelectric Diagnostics Technology, China; (2) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of sciences, Xi'an, Shaanxi, 710119, China; (3) Graduate College, Chinese Academy of sciences, Beijing 100039, China
Corresponding author:Zhang, S.(xqsu@opt.ac.cn)
Source title:ICCASM 2010 - 2010 International Conference on Computer Application and System Modeling, Proceedings
Abbreviated source title:ICCASM - Int. Conf. Comput. Appl. Syst. Model., Proc.
Volume:1
Monograph title:ICCASM 2010 - 2010 International Conference on Computer Application and System Modeling, Proceedings
Issue date:2010
Publication year:2010
Pages:V1406-V1409
Article number:5620430
Language:English
ISBN-13:9781424472369
Document type:Conference article (CA)
Conference name:2010 International Conference on Computer Application and System Modeling, ICCASM 2010
Conference date:October 22, 2010 - October 24, 2010
Conference location:Shanxi, Taiyuan, China
Conference code:82681
Sponsor:Shanxi University; Taiyuan University of Technology; Taiyuan University of Science and Technology; Shanxi Normal University
Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States
Abstract:A effective approach to global motion compensation and moving object extraction is proposed. Firstly, feature-block detection and search-matching algorithm are used to attain background motion vectors of global image. Then, once the global motion vectors are robustly estimated, relatively stationary background can be almost completely eliminated through the registration difference algorithm. Finally, higher-order statistics is used to attain the motion target exactly. The experimental results validate that the proposed algorithm improves the performance of detection moving targets and effectively restrains the noise disturbance. © 2010 IEEE.
Number of references:17
Main heading:Computer applications
Controlled terms:Algorithms - Alpha particles - Motion compensation - Object recognition
Uncontrolled terms:Background compensation - Background motion - Block detection - Block Matching - Difference algorithms - Global motion - Global motion compensation - Higher order statistics - Image sequence - Matching algorithm - Motion object detection - Motion target - Moving object extraction - Moving targets - Noise disturbance - Object Detection
Classification code:723 Computer Software, Data Handling and Applications - 723.5 Computer Applications - 741 Light, Optics and Optical Devices - 921 Mathematics - 932.2 Nuclear Physics
DOI:10.1109/ICCASM.2010.5620430
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 68>
Accession number:20111413890818
Title:Invariants combination and optimization on aircraft recognition
Authors:Zhu, Xufeng (1); Ma, Caiwen (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.(zhuxufeng@126.com)
Source title:Journal of Information and Computational Science
Abbreviated source title:J. Inf. Comput. Sci.
Volume:7
Issue:14
Issue date:December 2010
Publication year:2010
Pages:3267-3274
Language:English
ISSN:15487741
Document type:Journal article (JA)
Publisher:Binary Information Press, P.O. Box 162, Bethel, CT 06801-0162, United States
Abstract:Controlling the stability of image invariants at every stage is proposed for extracting and selecting combined invariants. First, four stages on aircraft image recognition is discussed. Second, the benefits and shortages of four kinds of invariants, which include Hu's moments, Affine moments, Normalized Moment of Inertia and Normalized Fourier Descriptors, are analyzed. Third, multiple images for different aircraft types under various small space angles are collected and the above four invariants from these images are extracted. Fourth, the invariants are combined based on these four kinds of invariants and are optimized a new combined-invariants, which are sent to support vector machine classifier for identifying aircraft types. At last, the experiment results are shown that the recognition rate will be improved more apparently by using the optimized combined-invariants than by using the direct combined-invariants or single kind of invariants. Copyright © 2010 Binary Information Press.
Number of references:12
Main heading:Feature extraction
Controlled terms:Aircraft - Image processing - Image recognition - Optimization
Uncontrolled terms:Combination and optimization - Combined invariants - Feature selection - Fourier descriptors - Image invariant - Moment of inertia - Multiple image - Recognition rates - SVM
Classification code:652.1 Aircraft, General - 716 Telecommunication; Radar, Radio and Television - 741 Light, Optics and Optical Devices - 921.5 Optimization Techniques
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 69>
Accession number:20103113111445
Title:Experimental studies of controlling hydrofoil stall by electromagnetic force
Authors:Liu, Peng (1); Li, Yan-Xia (1); Zhou, Ben-Mou (2)
Author affiliation:(1) Avionics Equipment Flight Test Institute of Technology, China Flight Test Establishment, Xi'an 710089, China; (2) Key Lab. of Transient Physics, Nanjing University of Science and Technology, Nanjing 210094, China
Corresponding author:Liu, P.(lpeng0913@163.com)
Source title:Shiyan Liuti Lixue/Journal of Experiments in Fluid Mechanics
Abbreviated source title:Shiyan Liuti Lixue
Volume:24
Issue:3
Issue date:June 2010
Publication year:2010
Pages:29-33
Language:Chinese
ISSN:16729897
CODEN:SLLHAD
Document type:Journal article (JA)
Publisher:Zhongguo Kongqi Dongli Yanjiu yu Fazhan Zhongxin, P.O. Box 211, Mianyang, 621000, China
Abstract:By means of electromagnetic forces (Lorentz force), the structure of the flow boundary layer may be modified, which is one of the active methods for flow controlling. With the forces generated by electromagnetic fields and localized around the electrolyte liquid boundary layers, the structure of the flow boundary layer may be modified and the flow separation from the surface may be controlled effectively. The electromagnetic force provides with the effective affects of increasing the lift forces of the hydrofoil and reducing drag and controlling the hydrofoil stall. This paper is concerned about the basic theory of weakly conducting fluid boundary layer control by electromagnetic body forces, and the hydrofoil covered with electromagnetic actuators was put into electrolyte liquid. The experimental control system based on DSP chip TMS320F2812 was used to change expediently the angle of attack and speed, and measure the lift and drag of the hydrofoil. The experimental results show that positive electromagnetic force can restrain and stave off hydrofoil stall availably.
Number of references:12
Main heading:Magnetic field effects
Controlled terms:Boundary layers - Control theory - Digital signal processors - Drag - Electrolytes - Electromagnetic fields - Hydrofoils - Liquids - Lorentz force - Magnetic materials - Pneumatic control equipment
Uncontrolled terms:Active method - Basic theory - Body forces - Conducting fluid - DSP chip - Electromagnetic actuators - Electromagnetic force - Electromagnetic forces - Experimental control - Experimental studies - Flow boundaries - Lift and drag - Lift force - Liquid boundary layers - System-based - TMS320F2812
Classification code:708.4 Magnetic Materials - 716.1 Information Theory and Signal Processing - 722.4 Digital Computers and Systems - 723.2 Data Processing and Image Processing - 931.2 Physical Properties of Gases, Liquids and Solids - 731.1 Control Systems - 803 Chemical Agents and Basic Industrial Chemicals - 804 Chemical Products Generally - 931.1 Mechanics - 732.1 Control Equipment - 702 Electric Batteries and Fuel Cells - 701.2 Magnetism: Basic Concepts and Phenomena - 631.1 Fluid Flow, General - 631.1.1 Liquid Dynamics - 632.4 Pneumatic Equipment and Machinery - 641.2 Heat Transfer - 651.1 Aerodynamics, General - 671.1 Ship Design - 674.1 Small Marine Craft - 701 Electricity and Magnetism
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 70>
Accession number:20103113111311
Title:Athermalization design of wide temperature range for hybrid refractive-diffractive objective in 8~12 μm
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, Shaanxi 710119, China; (2) Graduate University of Chinese Academy of Sciences, Beijing 100049, China; (3) School of Technical Physics, Xidian University, Xi'an, Shaanxi 710071, China
Corresponding author:Yang, J.(yangjf@opt.ac.cn)
Source title:Guangxue Xuebao/Acta Optica Sinica
Abbreviated source title:Guangxue Xuebao
Volume:30
Issue:7
Issue date:July 2010
Publication year:2010
Pages:2089-2092
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 large relative aperture athermalized infrared optical system with wide field of view is introduced. The working wavelength is 8~12 μm; the full field of view is 40°; the effective focal length is 6 mm; the relative aperture is 1.25; the total optical length is 50 mm; and the back focal length (BFL) is 15 mm. It consists of a diffraction surface and two aspheric surfaces with a triplet structure, only using germanium and ZnSe. The system is simple, low mass and high image quality. The evaluation of the system is given in the temperature range of -80°C~200°C. The results show that the modulation transformation function (MTF) is near to 0.7 at the spatial frequency of 16 lp/mm and also near to the diffraction limit.
Number of references:12
Main heading:Optical systems
Controlled terms:Aspherics - Density (optical) - Diffractive optical elements - Germanium - Image quality
Uncontrolled terms:Aspheric surfaces - Athermalization - Back focal length - Diffraction limits - Effective focal lengths - Full-field - High image quality - Hybrid refractive-diffractive objective - Infrared optical systems - Low mass - Optical length - Spatial frequency - Temperature range - Transformation functions - Triplet structures - Wide field of view
Classification code:549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals - 741 Light, Optics and Optical Devices - 741.1 Light/Optics - 741.3 Optical Devices and Systems - 804 Chemical Products Generally
DOI:10.3788/AOS20103007.2089
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 71>
Accession number:20104013272225
Title:Generation of multiple spherical spots with a radially polarized beam in a 4 focusing system
Authors:Yan, Shaohui (1); Yao, Baoli (1); Zhao, Wei (1); Lei, Ming (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) College of Life Science, Shaanxi Key Laboratory of Molecular Biology for Agriculture, Northwest A and F University, Yangling 712100, 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:27
Issue:9
Issue date:September 1, 2010
Publication year:2010
Pages:2033-2037
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:We demonstrate the possibility of creating multiple spherical spots in a 4-π- focusing system with a radially polarized beam. Using spherical waves to expand the plane wave factor in the Richards-Wolf integral, it is found that a proper spatial modulation in the amplitude of the input field with radial polarization can form multiple spherical spots with a focusing system satisfying the Herschel condition. These spots are distributed symmetrically about the focus on the optical axis with variable positions and intensities. Although we consider only the case of three spherical spots in this paper, generalization to the multiple-spots case will present no difficulty. © 2010 Optical Society of America.
Number of references:14
Main heading:Spheres
Controlled terms:Focusing
Uncontrolled terms:Focusing system - HERSCHEL - Input field - Optical axis - Plane wave - Radial polarization - Radially polarized beam - Spatial modulations - Spherical waves
Classification code:631 Fluid Flow - 711.1 Electromagnetic Waves in Different Media
DOI:10.1364/JOSAA.27.002033
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 72>
Accession number:20103413166184
Title:Optimization of supercontinuum generation in air-silica nanowires
Authors:Lu, Hua (1); Liu, Xueming (1); Gong, Yongkang (1); Hu, Xiaohong (1); Li, Xiaohui (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:Journal of the Optical Society of America B: Optical Physics
Abbreviated source title:J Opt Soc Am B
Volume:27
Issue:5
Issue date:May 1, 2010
Publication year:2010
Pages:904-908
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:An effective hybrid genetic algorithm (GA) for optimizing air-silica nanowires, the incident pulse, and supercontinuum (SC) generation, is proposed in this paper. Based on the proposed algorithm, the dispersion and nonlinearity of air-silica nanowires, as well as the duration and chirp of incident pulses, are optimized to achieve SC generation with a broader, smoother, and more intense spectrum. It is found that the optimized spectrum becomes smoother from 740 to 1500 nm and is broadened by 300 nm. Meanwhile, the spectral intensity in the range of 450-945 nm is significantly increased by a factor of 10. © 2010 Optical Society of America.
Number of references:34
Main heading:Genetic algorithms
Controlled terms:Nanowires - Optimization - Silica
Uncontrolled terms:Hybrid genetic algorithms - Incident pulse - Non-Linearity - Silica nano wires - Spectral intensity - Supercontinuum generations
Classification code:723 Computer Software, Data Handling and Applications - 761 Nanotechnology - 812 Ceramics, Refractories and Glass - 921 Mathematics - 921.5 Optimization Techniques - 933 Solid State Physics
DOI:10.1364/JOSAB.27.000904
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 73>
Accession number:20101212786712
Title:Measurement of optical trapping force and stiffness of micro-particles with the drag-force method
Authors:Peng, Fei (1); Yao, Bao-Li (1); Lei, Ming (1); Yan, Shao-Hui (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 School of the Chinese Academy of Sciences, Beijing 100039, China
Corresponding author:Yao, B.-L.(yaobl@opt.ac.cn)
Source title:Guangdianzi Jiguang/Journal of Optoelectronics Laser
Abbreviated source title:Guangdianzi Jiguang
Volume:21
Issue:1
Issue date:January 2010
Publication year:2010
Pages:78-82
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:By using the hydrodynamic method, maximal transverse trapping forces on three kinds of micro-particles with radii ranging from 0.5 μm to 22 μm were measured by dragging these transparent dielectric beads suspended in water with the focused laser beam. The magnitude of trapping forces obtained from the experiment was of the order of pico-Newton. For PMMA particles of large size, the offset Δx of the particle from the optical trapping center was measured with different dragging velocities, and the trap stiffness was calculated according to the experimental result. In addition, at the edge of optical trap, where Δx is larger than the radius of the micro-particle, the optical trapping force was also measured to obtain the domain of trapping force and the relationship between the force and Δx. Comparison of measured trapping forces and stiffness on yeast cells with different radii under the same condition shows that the critical velocity decreases, the maximal trapping force rises and the stiffness reduces with increase of the radius of the yeast cell.
Number of references:16
Main heading:Optical tweezers
Controlled terms:Drag - Fluid dynamics - Hydrodynamics - Optical instruments - Stiffness - Yeast
Uncontrolled terms:Critical velocities - Drag-force method - Focused laser beams - Large sizes - Micro-particles - Optical trap - Optical trap stiffness - Optical trapping force - Opticaltrapping - PMMA particle - Trap stiffness - Trapping forces - Yeast cell
Classification code:951 Materials Science - 741.3 Optical Devices and Systems - 744.9 Laser Applications - 801.2 Biochemistry - 822.3 Food Products - 931.1 Mechanics - 941.3 Optical Instruments - 671.1 Ship Design - 631.2 Hydrodynamics - 631.1.1 Liquid Dynamics - 631.1 Fluid Flow, General - 422 Strength of Building Materials; Test Equipment and Methods - 421 Strength of Building Materials; Mechanical Properties - 651.1 Aerodynamics, General
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 74>
Accession number:20110113554963
Title:Total-internal-reflection fluorescence microscopy with W-shaped axicon mirrors
Authors:Lei, Ming (1); Zumbusch, Andreas (1)
Author affiliation:(1) Department of Chemistry, Center for Applied Photonics, University of Konstanz, D-78457 Konstanz, Germany; (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:Zumbusch, A.(andreas.zumbusch@uni-konstanz.de)
Source title:Optics Letters
Abbreviated source title:Opt. Lett.
Volume:35
Issue:23
Issue date:December 1, 2010
Publication year:2010
Pages:4057-4059
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 scheme based on a W-shaped axicon mirror device for total-internal- reflection fluorescence microscopy (TIRFM) is presented. This approach combines the advantages of higher efficiency compared with traditional TIRFM, adjustable illumination area, and simple switching between wide-field and TIRF imaging modes. TIRF images obtained with this approach are free of shadow artifacts and of interference fringes. Example micrographs of fluorescently labeled polystyrene beads, of Convallaria majalis tissue, and of Propidium-iodide- labeled Chinese hamster ovary cells are shown, and the capabilities of the scheme are discussed. © 2010 Optical Society of America.
Number of references:11
Main heading:Geometrical optics
Controlled terms:Fluorescence - Fluorescence microscopy - Mirrors - Polystyrenes
Uncontrolled terms:Chinese Hamster ovary cells - Higher efficiency - Interference fringe - Mirror devices - Polystyrene beads - Propidium - TIRF imaging - Total internal reflections - Wide-field
Classification code:461.9.1 Immunology - 741.1 Light/Optics - 741.3 Optical Devices and Systems - 815.1.1 Organic Polymers
DOI:10.1364/OL.35.004057
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 75>
Accession number:20101912922259
Title:Efficiency of pump absorption in gain-guided and index-antiguided (GG-IAG) fiber
Authors:Yan, Kun-Lun (1); Zhou, En-Yu (3); Wei, Wei (1); Peng, Bo (1)
Author affiliation:(1) State Key Laboratory Transient Optics and Photonics, Xi'an Institute of Optics, Precision Mechanics of CAS, Xi'an 710119, China; (2) Graduate College, Chinese Academy of Science, Beijing 100049, China; (3) Department of Optical Science and Engineering, Fudan University, Shanghai 200433, China
Corresponding author:Peng, B.(bpeng@opt.ac.cn)
Source title:Journal of Modern Optics
Abbreviated source title:J. Mod. Opt.
Volume:57
Issue:6
Issue date:March 2010
Publication year:2010
Pages:480-484
Language:English
ISSN:09500340
E-ISSN:13623044
CODEN:JMOPEW
Document type:Journal article (JA)
Publisher:Taylor and Francis Ltd., 4 Park Square, Milton Park, Abingdon, Oxfordshire, OX14 4RN, United Kingdom
Abstract:In this paper, the absorption characteristics of a novel double-clad gain-guided and index-antiguided (GG-IAG) fiber are investigated with 3D ray-trace method. Additionally, the simulated correctness compared with real data was carried out by measuring the GG-IAG fiber. Analysis and experimental results show that the absorption characteristics of GG-IAG fibers are different from conventional fibersthe total absorption efficiency of a GG-IAG fiber is large, while the effective absorption length is very short, and the negative refractive index step has significant influence on the total absorption efficiency. © 2010 Taylor & Francis.
Number of references:7
Main heading:Absorption
Controlled terms:Fibers - Refractive index - Three dimensional
Uncontrolled terms:Absorption characteristics - Absorption efficiency - Double-clad - Effective absorption - Negative refractive index - Pump absorption - Ray-trace
Classification code:902.1 Engineering Graphics - 819.4 Fiber Products - 817 Plastics and Other Polymers: Products and Applications - 931.2 Physical Properties of Gases, Liquids and Solids - 812 Ceramics, Refractories and Glass - 741.1 Light/Optics - 723.5 Computer Applications - 802.3 Chemical Operations
DOI:10.1080/09500341003695610
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 76>
Accession number:20102312980970
Title:Characterization and mechanism studies of dielectric barrier discharges generated at atmospheric pressure
Authors:Tang, Jie (1); Duan, Yixiang (1); Zhao, Wei (1)
Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics of CAS, Xi'an, Shaanxi 710119, China
Corresponding author:Duan, Y.(yxd@opt.ac.cn)
Source title:Applied Physics Letters
Abbreviated source title:Appl Phys Lett
Volume:96
Issue:19
Issue date:2010
Publication year:2010
Article number:191503
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:A dielectric barrier discharge (DBD) device operated at ambient air with an ac power supply was designed and examined. The discharge power and active current of DBD were characterized. Experimental results show that the discharge power does not proportionally increase all along with voltage. Through in-depth analysis of typical waveforms of instantaneous applied voltage and discharge current, and images of microdischarges in the gas gap, it is inferred that considerable reduction in charges transferred through discharge channels is most likely due to recombination and attachment to electronegative molecules, nonuniform highly distorted electric fields, and repulse of more homogeneous electric charges. © 2010 American Institute of Physics.
Number of references:15
Main heading:Electric discharges
Controlled terms:Atmospheric pressure - Dielectric devices - Electric fields - Electric network analysis - Electric power systems - Plasma applications - Plasmas
Uncontrolled terms:AC power supplies - Active current - Ambient air - Applied voltages - Dielectric barrier discharges - Discharge channel - Discharge currents - Discharge power - Electronegative molecules - Gas gaps - In-depth analysis - Microdischarges - Nonuniform - Wave forms
Classification code:714 Electronic Components and Tubes - 708.1 Dielectric Materials - 706.1 Electric Power Systems - 932.3 Plasma Physics - 704 Electric Components and Equipment - 701.1 Electricity: Basic Concepts and Phenomena - 443.1 Atmospheric Properties - 703.1.1 Electric Network Analysis
DOI:10.1063/1.3430008
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 77>
Accession number:20101412826745
Title:Near- and mid-infrared spectroscopic properties of Tm<sup>3+</sup>-doped Ge-Ga-S-CsI glasses
Authors:Zhang, Pengjun (1); Dai, Shixun (1); Peng, Bo (2); Xu, Tiefeng (1); Nie, Qiuhua (1); Zhang, Xianghua (1); Wang, Xunsi (1)
Author affiliation:(1) College of Information Science and Engineering, Ningbo University, Ningbo, Zhejiang 315211, 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) Laboratoire de Verres et Ceramiques, Université de Rennes I, Rennes 35042, France
Corresponding author:Dai, S.(daishixun@nbu.edu.cn)
Source title:Zhongguo Jiguang/Chinese Journal of Lasers
Abbreviated source title:Zhongguo Jiguang
Volume:37
Issue:2
Issue date:February 2010
Publication year:2010
Pages:554-559
Language:Chinese
ISSN:02587025
CODEN:ZHJIDO
Document type:Journal article (JA)
Publisher:Science Press, 18,Shuangqing Street,Haidian, Beijing, 100085, China
Abstract:Tm<sup>3+</sup>-doped chalcogenide glasses in Ge-Ga-S-CsI system were prepared and the properties of glasses including density, absorption spectrum, emission spectra and fluorescence life in the near- and mid-infrared spectral region under 800 nm excitation were measured. The optical parameters such as intensity parameter Ωi (i=2, 4, 6), predicted spontaneous A, radiative transition rate β and lifetime τrad of Tm<sup>3+</sup> in Ge-Ga-S-CsI glasses and so on by means of Judd-Ofelt theory according to absorption spectrum were calculated. The fluorescence spectra were investigated with the different Tm<sup>3+</sup> ion concentration under 800 nm excitation. Also, the emission cross-section at 1.8 μm and 3.8 μm was found using the theory of McCumber and the Futchbauer- Ladenburg equation respectively.
Number of references:23
Main heading:Infrared spectroscopy
Controlled terms:Absorption - Absorption spectroscopy - Emission spectroscopy - Fluorescence - Germanium - Glass - Infrared devices - Light absorption - Metal ions - Rare earths
Uncontrolled terms:c-Si systems - Chalcogenide glass - Emission cross-section - Emission spectrums - Fluorescence spectra - Intensity parameters - Ion concentrations - Judd Ofelt theory - Mid-infrared luminescence - Mid-infrared spectral regions - Midinfrared - Optical parameter - Radiative transition rate - Rare earth ions
Classification code:802.3 Chemical Operations - 804 Chemical Products Generally - 804.2 Inorganic Compounds - 941.4 Optical Variables Measurements - 812.3 Glass - 931.3 Atomic and Molecular Physics - 941.3 Optical Instruments - 931.2 Physical Properties of Gases, Liquids and Solids - 801 Chemistry - 741.3 Optical Devices and Systems - 481.2 Geochemistry - 531.1 Metallurgy - 533 Ore Treatment and Metal Refining - 549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals - 741 Light, Optics and Optical Devices - 741.1 Light/Optics
DOI:10.3788/CJL20103702.0554
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 78>
Accession number:20104913467549
Title:Image quality assessment and human visual system
Authors:Gao, Xinbo (1); Lu, Wen (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, 50 Nanyang Avenue, Blk N4, 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, Shaanxi, China
Corresponding author:Gao, X.
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:7744
Monograph title:Visual Communications and Image Processing 2010
Issue date:2010
Publication year:2010
Article number:77440Z
Language:English
ISSN:0277786X
CODEN:PSISDG
ISBN-13:9780819482341
Document type:Conference article (CA)
Conference name:Visual Communications and Image Processing 2010
Conference date:July 11, 2010 - July 14, 2010
Conference location:Huangshan, China
Conference code:81851
Sponsor:National Natural Science Foundation of China (NSFC); Chinese Academy of Sciences; Huawei Technologies Company, Ltd.; Microsoft Research Asia
Publisher:SPIE, P.O. Box 10, Bellingham, WA 98227-0010, United States
Abstract:This paper summaries the state-of-the-art of image quality assessment (IQA) and human visual system (HVS). IQA provides an objective index or real value to measure the quality of the specified image. Since human beings are the ultimate receivers of visual information in practical applications, the most reliable IQA is to build a computational model to mimic the HVS. According to the properties and cognitive mechanism of the HVS, the available HVS-based IQA methods can be divided into two categories, i.e., bionics methods and engineering methods. This paper briefly introduces the basic theories and development histories of the above two kinds of HVS-based IQA methods. Finally, some promising research issues are pointed out in the end of the paper. © 2010 SPIE.
Number of references:98
Main heading:Image quality
Controlled terms:Bionics - Biophysics - Communication - Image communication systems - Imaging systems - Motion compensation - Psychophysiology - Rating - Visual communication
Uncontrolled terms:Engineering methods - Human Visual System - Image quality assessment - Visual physiology - Visual psychophysics
Classification code:902.2 Codes and Standards - 741 Light, Optics and Optical Devices - 716.4 Television Systems and Equipment - 931 Classical Physics; Quantum Theory; Relativity - 716 Telecommunication; Radar, Radio and Television - 461.4 Ergonomics and Human Factors Engineering - 461.1 Biomedical Engineering - 701 Electricity and Magnetism
DOI:10.1117/12.862431
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 79>
Accession number:20105213522320
Title:Parallel phase-shifting interferometry based on michelson-like architecture
Authors:Min, Junwei (1); Yao, Baoli (1); Gao, Peng (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 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:49
Issue:34
Issue date:December 1, 2010
Publication year:2010
Pages:6612-6616
Language:English
ISSN:00036935
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:In this paper, we present a new scheme for parallel phase-shifting interferometry that employs a Michelson-like architecture and a simple polarization unit to generate two phase-shifting interferograms with phase shift of π/2 at a single camera exposure. The parallel phase-shifting unit is built with simple optical components, and the distance between the parallel interferograms can be adjusted conveniently. Phase reconstruction is performed by using an algorithm developed for two-step phase-shifting interferometry. The practicability of the proposed configuration and the reconstruction method is demonstrated by experiments. © 2010 Optical Society of America.
Number of references:22
Main heading:Interferometry
Uncontrolled terms:Interferograms - Michelson - Optical components - Phase reconstruction - Phase shifting Interferometry - Phase-shifting - Reconstruction method - Single cameras - Two phase - Two-step phase-shifting
Classification code:941.4 Optical Variables Measurements
DOI:10.1364/AO.49.006612
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 80>
Accession number:20100712706611
Title:Ultra-dry oxygen atmosphere to protect tellurite glass fiber from surface crystallization
Authors:Zhang, Aidong (1); Lin, Aoxiang (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:Journal of Non-Crystalline Solids
Abbreviated source title:J Non Cryst Solids
Volume:356
Issue:9-10
Issue date:March 15, 2010
Publication year:2010
Pages:525-528
Language:English
ISSN:00223093
CODEN:JNCSBJ
Document type:Journal article (JA)
Publisher:Elsevier, P.O. Box 211, Amsterdam, 1000 AE, Netherlands
Abstract:In this study we report on surface crystallization phenomena and propose a solution for the fabrication of long and robust tellurite glass fibers. The bulk tellurite glasses of interest were prepared by melting and quenching techniques. Tellurite glass preforms and fibers were fabricated by suction casting and rod-in-tube drawing methods, respectively. The surfaces of the tellurite bulk glass samples and of the drawn fibers prepared under different controlled atmospheres were examined by X-ray diffraction. When the tellurite glass fibers were drawn in ambient air containing water vapor, four primary kinds of small crystals were found to appear on the fiber surface, α-TeO<inf>2</inf>, γ-TeO<inf>2</inf>, Zn<inf>2</inf>Te<inf>3</inf>O<inf>8</inf> and Na<inf>2</inf>Zn<inf>3</inf>(CO<inf>3</inf>)<inf>4</inf>·3H<inf>2</inf>O. A mechanism for this surface crystallization is proposed and a solution described, using an ultra-dry oxygen gas atmosphere to effectively prevent surface crystallization during fiber drawing. © 2010 Elsevier B.V. All rights reserved.
Number of references:16
Main heading:Fibers
Controlled terms:Crystallization - Glass fibers - Light - Optical fiber fabrication - Optical fibers - Optical materials - Oxygen - Sodium - Tellurium compounds - Water vapor - Zinc
Uncontrolled terms:Ambient air - Bulk glass - Controlled atmosphere - Dry oxygen - Fiber drawing - Fiber surface - Small crystals - Suction casting - Surface crystallization - Tellurite glass - Tellurite glass fiber - Tube drawing
Classification code:804 Chemical Products Generally - 804.1 Organic Compounds - 804.2 Inorganic Compounds - 812 Ceramics, Refractories and Glass - 812.3 Glass - 817 Plastics and Other Polymers: Products and Applications - 819.2 Synthetic Fibers - 819.4 Fiber Products - 933.1 Crystalline Solids - 802.3 Chemical Operations - 413 Insulating Materials - 443.1 Atmospheric Properties - 546.3 Zinc and Alloys - 549.1 Alkali Metals - 641 Heat and Mass Transfer; Thermodynamics - 741.1 Light/Optics - 741.1.2 Fiber Optics - 741.3 Optical Devices and Systems - 801.4 Physical Chemistry
DOI:10.1016/j.jnoncrysol.2010.01.001
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 81>
Accession number:20103413165681
Title:Second-harmonic generation from metal-film nanohole arrays
Authors:Lu, Hua (1); Liu, Xueming (1); Zhou, Renlong (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:Liu, X.(liuxm@opt.ac.cn)
Source title:Applied Optics
Abbreviated source title:Appl. Opt.
Volume:49
Issue:12
Issue date:April 20, 2010
Publication year:2010
Pages:2347-2351
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:The roles of surface plasmon resonance and localized resonances in second-harmonic generation are investigated in a noncentrosymmetrical metallic film with a periodic subwavelength nanohole array. By using a recently developed microscopic classical theory and a three-dimensional finite-difference timedomain algorithm, numerical results show that the second-harmonic intensity is a function of the polarization and wavelength of incident waves. A peak of the second-harmonic intensity is achieved when the incident wave is along the direction perpendicular to the x-axis of nanoholes, which corresponds to the maximal extraordinary optical transmission. Meanwhile, the second harmonic is found to correlate with the group delay of incident waves. © 2010 Optical Society of America.
Number of references:29
Main heading:Harmonic functions
Controlled terms:Finite difference time domain method - Group delay - Harmonic analysis - Harmonic generation - Light transmission - Numerical analysis - Surface plasmon resonance
Uncontrolled terms:Classical theory - Extraordinary optical transmission - Finite difference - Incident waves - Nanohole arrays - Nanoholes - Numerical results - Second harmonic generation - Second harmonics - Second-harmonic - Sub-wavelength - Time-domain algorithm
Classification code:703.1 Electric Networks - 741.1 Light/Optics - 751.1 Acoustic Waves - 921 Mathematics - 921.6 Numerical Methods
DOI:10.1364/AO.49.002347
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 82>
Accession number:20104213309880
Title:Compact tunable 10 w picosecond source based on yb-doped fiber amplification of gain switch laser diode
Authors:Liu, Hongjun (1); Gao, Cunxiao (1); Tao, Jintao (1); Zhao, Wei (1); Wang, Yishan (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:64
Issue date:2010
Publication year:2010
Pages:379-382
Language:English
ISSN:2010376X
E-ISSN:20103778
Document type:Journal article (JA)
Publisher:WASET - World Academy of Science, Engineering and Technology, United States
Abstract:A compact tunable 10 W picosecond source based on Yb-doped fiber amplification of gain switch laser diode has been demonstrated. A gain switch semiconductor laser diode was used 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 tunable pulses with high stability and excellent beam quality (M<sup>2</sup><1.2) of 10 W average power 150 ps pulse duration at 1 MHz repetition rate were obtained. The central wavelength with the line width of 2.5-3 nm was tunable from 1053 nm to 1073 nm.
Number of references:19
Main heading:Semiconductor lasers
Controlled terms:Amplification - Amplifiers (electronic) - Diode amplifiers - Fiber amplifiers - Fibers - High power lasers - Lasers - Pulse repetition rate - Semiconductor diodes - Ytterbium
Uncontrolled terms:Average power - Central wavelength - Double-clad - Gain switch - High stability - High-power - Large mode area - Main amplifiers - Multi-stage - Picosecond laser - Picoseconds - Pulse durations - Repetition rate - Seed source - Semiconductor laser diodes - Single mode - Yb-doped fibers
Classification code:817 Plastics and Other Polymers: Products and Applications - 812 Ceramics, Refractories and Glass - 744.4 Solid State Lasers - 744.1 Lasers, General - 714.2 Semiconductor Devices and Integrated Circuits - 713.1 Amplifiers - 547.2 Rare Earth Metals
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 83>
Accession number:20104313323776
Title:Performance analysis of semiconductor optical amplifier under double assist light injection near transparency wavelength
Authors:Hui, Zhan-Qiang (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 Institutes of Posts and Telecommunications, Xi'an 710061, China
Corresponding author:Hui, Z.-Q.(zqhui@opt.ac.cn)
Source title:Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering
Abbreviated source title:Hongwai yu Jiguang Gongcheng Infrared Laser Eng.
Volume:39
Issue:4
Issue date:August 2010
Publication year:2010
Pages:664-670
Language:English
ISSN:10072276
Document type:Journal article (JA)
Publisher:Chinese Society of Astronautics, P.O. Box 225-32, Tianjin, 300192, China
Abstract:A theory model was presented, which account for the impacts of amplified spontaneous emission and double continuous-wave assist light beams on the carrier dynamics in a semiconductor optical amplifier(SOA), and was used to numerically simulate transparency wavelength shift, gain saturation and effective carrier lifetime variation. Firstly, as a verification of the model, the dependence of transparency wavelength on both probe wavelength and probe power was provided. This numerical result was in agreement with the previous experiment. Secondly, based on this temporal gain dynamics model, the SOA behaviors of gain saturation and effective carrier lifetime under double assist light beams separately near material and device transparency wavelengths were investigated. It is demonstrated that the saturation output power and the gain recovery time can be greatly improved by using double assist light injection without sacrificing the available SOA gain compared with the scheme of single assist light injection. These simulation results suggest that using double assist light beams near transparency wavelength are useful for improving SOA performance in ultrafast photonic networks.
Number of references:18
Main heading:Carrier lifetime
Controlled terms:Computer simulation - Fiber lasers - Materials properties - Optical switches - Probes - Semiconductor devices - Semiconductor optical amplifiers - Transparency - Wavelength
Uncontrolled terms:Amplified spontaneous emissions - Assist light - Carrier dynamics - Continuous waves - Effective carrier lifetime - Gain dynamics - Gain recovery time - Gain saturation - Numerical results - Performance analysis - Probe wavelength - Saturation output power - Semiconductor optical amplifier(SOA) - Simulation result - SOA performance - Theory model - Transparency wavelength - Ultra-fast photonics
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 - 741 Light, Optics and Optical Devices - 723.5 Computer Applications - 714.2 Semiconductor Devices and Integrated Circuits - 423 Non Mechanical Properties and Tests of Building Materials - 421 Strength of Building Materials; Mechanical Properties
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 84>
Accession number:20105213529816
Title:Design of a color image fusion system based on DSP and FPGA
Authors:Liu, Zhaohui (1); Wang, Yubing (1); Liu, Wen (1)
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences (CAS), Xi'an,710119, China; (2) Graduate University, Chinese Academy of Sciences (CAS), China
Corresponding author:Liu, Z.
Source title:Proceedings - 2010 3rd International Congress on Image and Signal Processing, CISP 2010
Abbreviated source title:Proc. - Int. Congr. Image Signal Process., CISP
Volume:2
Monograph title:Proceedings - 2010 3rd International Congress on Image and Signal Processing, CISP 2010
Issue date:2010
Publication year:2010
Pages:797-800
Article number:5646714
Language:English
ISBN-13:9781424465149
Document type:Conference article (CA)
Conference name:2010 3rd International Congress on Image and Signal Processing, CISP 2010
Conference date:October 16, 2010 - October 18, 2010
Conference location:Yantai, China
Conference code:83091
Sponsor:Yantai University
Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States
Abstract:In this paper, a color image fusion system based on DSP and FPGA is introduced .In the system, TMS320DM642 is used as the kernel processor to finish the image's fusion arithmetic, storage and display. FPGA, which has the ability to control the logic of image capturing, is used as the assistive processor. The experiment shows that this technology can obtain color fusion image. ©2010 IEEE.
Number of references:5
Main heading:Image fusion
Controlled terms:Color - Signal processing
Uncontrolled terms:Assistive - Color fusion - Color image fusions - DSP and FPGA - Fusion arithmetic - Image capturing - Panchromatic image
Classification code:716.1 Information Theory and Signal Processing - 723.2 Data Processing and Image Processing - 741.1 Light/Optics
DOI:10.1109/CISP.2010.5646714
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 85>
Accession number:20104313323592
Title:Optical system design of space camera with long focal length and correction of image distortion
Authors:Li, Xuyang (1); Li, Yingcai (1); Ma, Zhen (1); Yi, Hongwei (1); He, Tianbing (1)
Author affiliation:(1) Xi'an Institute of Optics and Precision Machanicas, Chinese Academy of Sciences, Xi'an, Shaanxi 710119, China; (2) Graduate University of Chinese Academy of Sciences, Beijing 100049, China
Corresponding author:Li, X.(lixuyang2008@126.com)
Source title:Guangxue Xuebao/Acta Optica Sinica
Abbreviated source title:Guangxue Xuebao
Volume:30
Issue:9
Issue date:September 2010
Publication year:2010
Pages:2657-2661
Language:Chinese
ISSN:02532239
CODEN:GUXUDC
Document type:Journal article (JA)
Publisher:Chinese Optical Society, P.O. Box 80, Xi'an, 710068, China
Abstract:With the development of space optical technology, time delay and integration charge coupled device (TDI-CCD) space camera has been widely applied. TDI-CCD image sensor not only improves signal-noise-ratio(SNR) of the optical system but also makes the opto-mechanical structure of the camera more compact, but the optical system distortion will affecte image quality, so the optical system design must satisfy the new demand. The optical system distortion which affects TDI-CCD integral is analyzed. The method of image distortion elimination of space camera optical system is researched. An optical system is designed with distortion correction lens which is characterized by the spectral band of 450~900 nm, focal length of 6000 mm, and F number of 10. The result indicates that the view field angle reaches 1.6°, optical system distortion is less than 0.01%. modulation transfer function reaches 0.50 at 50 lp/mm Nyquist frequency with 0.06 central obscure, and the quality of image reaches the diffraction limit. The designed optical system can meet the demand for the use of high resolution space cameras, and is suitable for multi-spectrum, stereo imaging, and stereo mapping camera system which has little distortion.
Number of references:12
Main heading:Optical systems
Controlled terms:Cameras - CCD cameras - Charge coupled devices - Focusing - Image quality - Mirrors - Optical design
Uncontrolled terms:Diffraction limits - Distortion correction - F number - Focal lengths - High resolution - Image distortions - Long focal lengths - Method of images - Modulation transfer function - Multi-spectrum - Nyquist frequency - Optical system designs - Optical technology - Optomechanical - Space cameras - Spectral band - Stereo imaging - Stereo mapping - TDI-CCD - Three-mirror, anastigmatic optical system - Time-delay and integrations - View field
Classification code:714.2 Semiconductor Devices and Integrated Circuits - 741 Light, Optics and Optical Devices - 742.2 Photographic Equipment
DOI:10.3788/AOS20103009.2657
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 86>
Accession number:20101612868308
Title:Paraxial propagation properties of waveguide modes in single-mode fiber
Authors:Chen, Youjie (1); Duan, Kailiang (2); Lü, Baida (1); Zhao, Wei (2)
Author affiliation:(1) Institute of Laser Physics and Chemistry, 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 030001, China
Corresponding author:Duan, K.(baidalu0@tom.com)
Source title:Qiangjiguang Yu Lizishu/High Power Laser and Particle Beams
Abbreviated source title:Qiangjiguang Yu Lizishu
Volume:22
Issue:2
Issue date:February 2010
Publication year:2010
Pages:257-260
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:By expanding the LP01 mode into a linear superposition of Laguerre-Gaussian modes and using Collins formula, the analytical propagation equation of wave-guide modes in a single-mode fiber through paraxial ABCD optical systems is derived. The free-space propagation and focusing properties of the LP01 mode are studied and compared with those of the fundamental Gaussian mode. It is shown that the Gaussian mode in place of the LP01 mode may introduce some errors. In the focused field of the LP01 mode there exists the focal shift which increases with decreasing Fresnel number. By a suitable choice of the Fresnel number, a long focusing depth may appear for the LP01 mode which is quite different from that of the focused Gaussian mode.
Number of references:12
Main heading:Fibers
Controlled terms:Fiber lasers - Focusing - Waveguides
Uncontrolled terms:ABCD optical systems - Analytical propagation equation - Collins formula - Focal shifts - Focused fields - Focusing properties - Free space propagation - Fresnel number - Gaussian modes - Guide modes - Laguerre-Gaussian modes - Linear superpositions - Paraxial - Paraxial propagation - Propagation properties - Waveguide mode
Classification code:819.4 Fiber Products - 817 Plastics and Other Polymers: Products and Applications - 812 Ceramics, Refractories and Glass - 751.1 Acoustic Waves - 744.4 Solid State Lasers - 741.1.2 Fiber Optics - 741.1 Light/Optics - 714.3 Waveguides - 711.1 Electromagnetic Waves in Different Media
DOI:10.3788/HPLPB20102202.0257
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 87>
Accession number:20102312999903
Title:Spectroscopic analysis of element concentrations in aluminum alloy using nanosecond laser-induced breakdown spectroscopy
Authors:Luo, Wenfeng (1); Tang, Jie (1); Gao, Cunxiao (1); Wang, Haojing (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
Corresponding author:Luo, W.(luowf@opt.ac.cn)
Source title:Physica Scripta
Abbreviated source title:Phys Scr
Volume:81
Issue:6
Issue date:2010
Publication year:2010
Article number:065302
Language:English
ISSN:00318949
E-ISSN:14024896
CODEN:PHSTBO
Document type:Journal article (JA)
Publisher:Institute of Physics Publishing, Temple Back, Bristol, BS1 6BE, United Kingdom
Abstract:A plasma generated by 1064 nm Nd:YAG laser irradiation of aluminum alloy in air at atmospheric pressure was studied spectroscopically. The electron density was inferred by measuring the Stark broadened line profile of Cu(I) 324.75 nm, while the electron temperature was determined using the Boltzmann plot method with ten neutral iron lines. Based on the results, local thermodynamic equilibrium was studied. Moreover, calibration curves were presented for samples containing Si, Fe, Cu, Mn, Mg, Ni, Zn and Ti, and the limit of detection of trace elements was calculated based on experimental results. © 2010 The Royal Swedish Academy of Sciences.
Number of references:26
Main heading:Neodymium lasers
Controlled terms:Aluminum - Aluminum alloys - Atmospheric pressure - Copper alloys - Manganese - Manganese compounds - Spectroscopic analysis - Trace elements - Zinc
Uncontrolled terms:1064 nm - Boltzmann plot - Calibration curves - Electron densities - Element concentrations - Limit of detection - Line profiles - Local thermodynamic equilibrium - Nanosecond lasers - Nd: YAG laser irradiation
Classification code:804.1 Organic Compounds - 804 Chemical Products Generally - 801 Chemistry - 744.4 Solid State Lasers - 546.3 Zinc and Alloys - 804.2 Inorganic Compounds - 544.2 Copper Alloys - 541.2 Aluminum Alloys - 541.1 Aluminum - 481.2 Geochemistry - 443.1 Atmospheric Properties - 543.2 Manganese and Alloys
DOI:10.1088/0031-8949/81/06/065302
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 88>
Accession number:20104113282393
Title:Nonlinear chirped-pulse propagation and supercontinuum generation in photonic crystal fibers
Authors:Hu, Xiaohong (1); Wang, Yishan (1); Zhao, Wei (1); Yang, Zhi (1); Zhang, Wei (1); Li, Cheng (1); Wang, Hushan (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:Applied Optics
Abbreviated source title:Appl. Opt.
Volume:49
Issue:26
Issue date:September 10, 2010
Publication year:2010
Pages:4984-4989
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:Based on the generalized nonlinear Schro¨dinger equation and waveguiding properties typical of the photonic crystal fiber structure, nonlinear chirped-pulse propagation and supercontinua generation in the femtosecond and picosecond regimes are investigated numerically. The simulation results indicate that an input chirp parameter mainly affects the initial stage of spectral broadening caused by the self-phase modulation (SPM) effect. In the femtosecond regime where the SPM effect plays an important role in the process of spectral broadening, an input positive chirp can enhance the supercontinuum bandwidth through a modified pulse compression phase and a decreased propagation distance required by soliton fission. In the picosecond regime, where the SPM effect contributes less to the continuum bandwidth and four-wave mixing process or modulational instability dominates the initial stage of spectral and temporal evolution, the output spectral shape and bandwidths are less sensitive to the input chirp parameters. © 2010 Optical Society of America.
Number of references:19
Main heading:Pulse generators
Controlled terms:Bandwidth - Bandwidth compression - Chirp modulation - Crystal structure - Crystal whiskers - Four wave mixing - Laser pulses - Nonlinear equations - Photonic crystal fibers - Photonic crystals - Self phase modulation - Solitons
Uncontrolled terms:Chirp parameter - Chirped-pulse - Crystal fiber - Dinger equation - Femtoseconds - Initial stages - Modulational instability - Output spectral - Picosecond regime - Positive chirp - Propagation distances - Simulation result - Soliton fission - Spectral broadening - Supercontinua - Supercontinuum - Supercontinuum generations - Temporal evolution - Waveguiding properties
Classification code:921.1 Algebra - 801.4 Physical Chemistry - 744.1 Lasers, General - 951 Materials Science - 741 Light, Optics and Optical Devices - 716 Telecommunication; Radar, Radio and Television - 713.4 Pulse Circuits - 716.1 Information Theory and Signal Processing
DOI:10.1364/AO.49.004984
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 89>
Accession number:20102212974714
Title:Comparison of two types of fourier transform imaging spectrometry
Authors:Xiangli, Bin (1); Lü, Qun-Bo (1); Huang, Min (1); Yao, Tao (2)
Author affiliation:(1) Academy of Opto-Electronics, Chinese Academy of Sciences, Beijing 100080, 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 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:30
Issue:5
Issue date:May 2010
Publication year:2010
Pages:1422-1426
Language:Chinese
ISSN:10000593
CODEN:GYGFED
Document type:Journal article (JA)
Publisher:Science Press, 18,Shuangqing Street,Haidian, Beijing, 100085, China
Abstract:The comparison between "large aperture static imaging spectrometry (LASIS)" designed by author and "method for simultaneously measuring the spectral intensity as a function of wavelength of all the pixels of a two dimensional scene" (MSMSI) designed by Israeli researchers is given. The difference of the interferometers and imaging systems in LASIS and MSMSI is discussed. The nonlinear curve of optical path difference of MSMSI is simulated. Inspired by the operation of MSMSI, the time modulated Fourier transform imaging spectrometry based on lateral shearing interferometer was presented. The optical path differences of different field of view were given under the condition of regularly rotating the lateral shearing interferometer.
Number of references:12
Main heading:Fourier transforms
Controlled terms:Fiber optic sensors - Interferometers - Optoelectronic devices - Shearing - Spectrometers - Spectrometry
Uncontrolled terms:Field of views - Fourier transform imaging spectrometers - Fourier-transform imaging - Large aperture - Lateral shearing interferometer - Nonlinear curves - Optical path difference - Sagnac interferometer - Spectral intensity - Static imaging
Classification code:941.4 Optical Variables Measurements - 941.3 Optical Instruments - 921.3 Mathematical Transformations - 801 Chemistry - 741.3 Optical Devices and Systems - 741.1.2 Fiber Optics - 732.2 Control Instrumentation - 717.2 Optical Communication Equipment - 714.2 Semiconductor Devices and Integrated Circuits - 604.1 Metal Cutting - 535.1 Metal Rolling
DOI:10.3964/j.issn.1000-0593(2010)05-1422-05
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 90>
Accession number:20103213144003
Title:Local histogram based geometric invariant image watermarking
Authors:Deng, Cheng (1); Gao, Xinbo (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, Blk N4, 639798 Singapore, Singapore
Corresponding author:Li, X.(xuelong_li@opt.ac.cn)
Source title:Signal Processing
Abbreviated source title:Signal Process
Volume:90
Issue:12
Issue date:December 2010
Publication year:2010
Pages:3256-3264
Language:English
ISSN:01651684
CODEN:SPRODR
Document type:Journal article (JA)
Publisher:Elsevier, P.O. Box 211, Amsterdam, 1000 AE, Netherlands
Abstract:Compared with other existing methods, the feature point-based image watermarking schemes can resist to global geometric attacks and local geometric attacks, especially cropping and random bending attacks (RBAs), by binding watermark synchronization with salient image characteristics. However, the watermark detection rate remains low in the current feature point-based watermarking schemes. The main reason is that both of feature point extraction and watermark embedding are more or less related to the pixel position, which is seriously distorted by the interpolation error and the shift problem during geometric attacks. In view of these facts, this paper proposes a geometrically robust image watermarking scheme based on local histogram. Our scheme mainly consists of three components: (1) feature points extraction and local circular regions (LCRs) construction are conducted by using Harris-Laplace detector; (2) a mechanism of grapy theoretical clustering-based feature selection is used to choose a set of non-overlapped LCRs, then geometrically invariant LCRs are completely formed through dominant orientation normalization; and (3) the histogram and mean statistically independent of the pixel position are calculated over the selected LCRs and utilized to embed watermarks. Experimental results demonstrate that the proposed scheme can provide sufficient robustness against geometric attacks as well as common image processing operations. © 2010 Elsevier B.V. All rights reserved.
Number of references:35
Main heading:Watermarking
Controlled terms:Detectors - Feature extraction - Geometry - Graphic methods - Image processing - Pixels
Uncontrolled terms:Feature detector - Geometric attacks - Histogram modification - Image Watermarking - Local region - Scale spaces
Classification code:914 Safety Engineering - 902.1 Engineering Graphics - 811.1.1 Papermaking Processes - 751.1 Acoustic Waves - 742.2 Photographic Equipment - 921 Mathematics - 741.1 Light/Optics - 723.5 Computer Applications - 723.2 Data Processing and Image Processing - 722.2 Computer Peripheral Equipment - 716 Telecommunication; Radar, Radio and Television - 741 Light, Optics and Optical Devices
DOI:10.1016/j.sigpro.2010.05.032
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 91>
Accession number:20103413174859
Title:Transmission characteristics of two-cavity Fabry-Perot structure
Authors:Chen, Mingrui (1); Bi, Siwen (1); Dou, Xibo (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:Bi, S.(bisw@opt.ac.cn)
Source title:Qiangjiguang Yu Lizishu/High Power Laser and Particle Beams
Abbreviated source title:Qiangjiguang Yu Lizishu
Volume:22
Issue:8
Issue date:August 2010
Publication year:2010
Pages:1870-1874
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:A two-cavity Fabry-Perot(F-P) structure is compared to the conventional F-P structure. The characteristics of transmission spectra for the conventional and the two-cavity F-P structures are theoretically analyzed. Based on the theoretical analysis, the transmission spectra of conventional, symmetric and asymmetric two-cavity F-P structures are simulated, and the results are discussed. The results show that, while the increase of the cavity length of a conventional F-P structure results in multiple resonant peaks on both sides of the main peak, the two-cavity F-P structures of the same total length can improve spectral range effectively and keep the main peak without degrading the performance through proper design of the mirror reflectivity and cavity lengths. The mirror reflectivity also decides the full width at half maximum(FWHM) of the peaks at the central wavelength for both conventional and two-cavity F-P structures. The influences of cavity lengths and their ratio, and mirror reflectivity on transmissivity, FWHM and spectral range of the two-cavity F-P structure have been discussed.
Number of references:15
Main heading:Full width at half maximum
Controlled terms:Cavity resonators - Fabry-Perot interferometers - Mirrors - Reflection
Uncontrolled terms:Cavity length - Central wavelength - Fabry-Perot - Fabry-Perot cavity - Fabry-Perot structure - Free spectral range - Mirror reflectivity - P-structures - Proper design - Resonant peaks - Spectral range - Total length - Transmission characteristics - Transmission spectrums - Transmissivity - Two-cavity
Classification code:711 Electromagnetic Waves - 714.3 Waveguides - 741.3 Optical Devices and Systems - 921 Mathematics - 941.3 Optical Instruments
DOI:10.3788/HPLPB20102208.1870
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 92>
Accession number:20141117446841
Title:Azimuthons in weakly nonlinear waveguides
Authors:Zhang, Yiqi (1); Skupin, Stefan (1); Lu, Keqing (2); Królikowski, Wieslaw (4)
Author affiliation:(1) Max Planck Institute for the Physics of Complex Systems, 01187 Dresden, Germany; (2) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics of Chinese Academy of Sciences, 710119 Xi'an, China; (3) Friedrich Schiller University, Institute of Condensed Matter Theory and Optics, 07742 Jena, Germany; (4) Laser Physics Centre, Research School of Physics and Engineering, Australian National University, Canberra, ACT 0200, Australia
Source title:Optics InfoBase Conference Papers
Abbreviated source title:Opt.InfoBase Conf. Papers
Monograph title:Nonlinear Photonics, NP 2010
Issue date:2010
Publication year:2010
Language:English
E-ISSN:21622701
ISBN-13:9781557528964
Document type:Conference article (CA)
Conference name:Nonlinear Photonics, NP 2010
Conference date:June 21, 2010 - June 24, 2010
Conference location:Karlsruhe, Germany
Conference code:103092
Publisher:Optical Society of America
Abstract:We show that a weakly guiding nonlinear waveguide supports propagation of stable rotating solitons, azimuthons. We calculate analytically the rotation frequency of these solitons and find it to be in agreement with numerical simulations. © 2010 Optical Society of America.
Number of references:8
Main heading:Waveguides
Controlled terms:Solitons
Uncontrolled terms:Azimuthons - Nonlinear waveguides - Rotation frequencies - Weakly non-linear
Classification code:714.3 Waveguides - 931.3 Atomic and Molecular Physics
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 93>
Accession number:20101912923172
Title:Dispersion measurement of Yb-doped fiber by a spectral interferometric technique
Authors:Zhang, Ting (1); Yang, Zhi (1); Zhao, Wei (1); Wang, Yishan (1); Fang, Ping (1); Li, Cheng (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:Zhang, T.(020131116@163.com)
Source title:Chinese Optics Letters
Abbreviated source title:Chin. Opt. Lett.
Volume:8
Issue:3
Issue date:March 2010
Publication year:2010
Pages:262-265
Language:English
ISSN:16717694
Document type:Journal article (JA)
Publisher:Science Press, 18,Shuangqing Street,Haidian, Beijing, 100085, China
Abstract:The dispersion of Yb-doped fiber is measured by a spectral interferometric technique. The experimental verification is achieved by comparing the measured data with published data of the Nufern 1060xp fiber and the measurement relative error is 1.36%. The parameters of the experimental system, such as minimum required source bandwidth and minimum fiber length, are introduced and analyzed in the measurement. The minimum required source bandwidth predicted through theoretical calculation at the center wavelength of 1070 nm is 19.3 nm, which perfectly agrees with the experimental value. © 2010 Chinese Optics Latters.
Number of references:18
Main heading:Fibers
Controlled terms:Interferometers - Interferometry - Ytterbium
Uncontrolled terms:Center wavelength - Dispersion measurements - Experimental system - Experimental values - Experimental verification - Fiber length - Measured data - Relative errors - Source bandwidth - Spectral interferometric - Theoretical calculations - Yb-doped fibers
Classification code:547.2 Rare Earth Metals - 812 Ceramics, Refractories and Glass - 817 Plastics and Other Polymers: Products and Applications - 819.4 Fiber Products - 941.3 Optical Instruments - 941.4 Optical Variables Measurements
DOI:10.3788/COL20100803.0262
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 94>
Accession number:20105113512274
Title:Study on spectral broadened characterization of cross phase modulation in photonic crystal fiber
Authors:Hui, Zhan-Qiang (1); Zhang, Jian-Guo (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:Guang Pu Xue Yu Guang Pu Fen Xi/Spectroscopy and Spectral Analysis
Abbreviated source title:Guang Pu Xue Yu Guang Pu Fen Xi
Volume:30
Issue:12
Issue date:December 2010
Publication year:2010
Pages:3295-3301
Language:Chinese
ISSN:10000593
CODEN:GYGFED
Document type:Journal article (JA)
Publisher:Science Press, 18,Shuangqing Street,Haidian, Beijing, 100085, China
Abstract:Spectrum broadening induced by cross phase modulation (XPM) was investigated by exploiting the optical time-division multiplexing (OTDM) data signal and continue wave probe light co-propagation in dispersion flattened high nonlinear photonic crystal fiber (PCF). The effects of wavelength drift of probe lights, polarization mismatch, total power and power ration of pump and probe light on the spectrum broadening were analyzed. The results show that good XPM effects can be obtained in 36 nm wavelength range when the total power is higher than 23 dB, power ration of pump and probe light is appropriate and with identical polarization. Furthermore, polarization independent XPM effect can be achieved by using the remainder birefringence of the PCF with the pump state of polarization (SOP) aligned at 45° to the PCF principal axes. The obtained results in this paper would be helpful for research on ultrahigh-speed all optical signal processing devices exploiting the XPM in PCF for future photonics network.
Number of references:23
Main heading:Photonic crystal fibers
Controlled terms:Crystal whiskers - Fibers - Industrial research - Nonlinear optics - Optical signal processing - Phase modulation - Photonic crystals - Polarization - Probes - Signal processing - Time division multiple access
Uncontrolled terms:All-optical signal processing - Cross phase modulation - Data signals - Nonlinear photonic crystal fiber - Optical spectra - Optical time division multiplexing - Photonic crystal fiber (PCF) - Photonics network - Polarization independent - Principal axes - Probe light - Pump-and-probe - Spectrum broadening - State of polarization - Total power - Ultra high speed - Wavelength drift - Wavelength ranges
Classification code:817 Plastics and Other Polymers: Products and Applications - 901.3 Engineering Research - 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 - 951 Materials Science - 812 Ceramics, Refractories and Glass - 716 Telecommunication; Radar, Radio and Television - 716.1 Information Theory and Signal Processing - 717 Optical Communication - 718 Telephone Systems and Related Technologies; Line Communications - 723 Computer Software, Data Handling and Applications - 741 Light, Optics and Optical Devices - 801.4 Physical Chemistry
DOI:10.3964/j.issn.1000-0593(2010)12-3295-07
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 95>
Accession number:20110413620061
Title:Cellulose acetate polymer film modified microstructured polymer optical fiber towards a nitrite optical probe
Authors:Li, Dongdong (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, Chinese Academy of Science, Beijing 100039, China
Corresponding author:Wang, L.(wangll@opt.ac.cn)
Source title:Optics Communications
Abbreviated source title:Opt Commun
Volume:283
Issue:14
Issue date:July 15, 2010
Publication year:2010
Pages:2841-2844
Language:English
ISSN:00304018
CODEN:OPCOB8
Document type:Journal article (JA)
Publisher:Elsevier, P.O. Box 211, Amsterdam, 1000 AE, Netherlands
Abstract:A novel microstructured polymer optical fiber (MPOF) probe for nitrites (NO<inf>2</inf><sup>-</sup>) detection was made by forming rhodamine 6G (Rh 6G)-doped cellulose acetate (CA) on the side wall of array holes in a MPOF. It was found that the MPOF probe only have a response to nitrites in a certain concentration of sulfuric acid solution. The calibration graph of fluorescence intensity versus nitrites concentration was linear in the range of 2.0 ×10<sup>-4</sup> g/ml-5.0×10<sup>-3</sup> g/ml. The method possesses ease of chemical modification, low cost design, and potential for direct integration with existing instrumentation, and has been applied to the determination of nitrites in real samples with satisfactory results. © 2010 Elsevier B.V. All rights reserved.
Number of references:16
Main heading:Nitrogen compounds
Controlled terms:Cellulose - Chemical modification - Fiber optics - Fibers - Fluorescence - Optical fibers - Polymer films - Polymers - Probes - Rhodium - Sulfuric acid - Walls (structural partitions)
Uncontrolled terms:Calibration graphs - Cellulose acetates - Direct integration - Fluorescence intensities - Low-cost design - Microstructured polymer optical fibers - Microstructured polymer optical fibers (mPOF) - Nitrites - Optical probe - Optical sensing - Real samples - Rhodamine 6G - Side walls - Sulfuric acid solution
Classification code:944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments - 815.1 Polymeric Materials - 815.1.1 Organic Polymers - 817 Plastics and Other Polymers: Products and Applications - 941 Acoustical and Optical Measuring Instruments - 942 Electric and Electronic Measuring Instruments - 943 Mechanical and Miscellaneous Measuring Instruments - 812 Ceramics, Refractories and Glass - 802.2 Chemical Reactions - 741.1.2 Fiber Optics - 741.1 Light/Optics - 547.1 Precious Metals - 402 Buildings and Towers - 804.2 Inorganic Compounds
DOI:10.1016/j.optcom.2010.04.005
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 96>
Accession number:20112013988468
Title:Spectral property of two-photon flux generated by four-photon scattering in photonic-crystal fibers
Authors:Sun, Hongbo (1); Liu, Xueming (1); Hu, Xiaohong (1); Li, Xiaohui (1)
Author affiliation:(1) Xian Institute of Optics and Precision Mechanics, Chinese Academy of Science, State Key Laboratory of Transient Optics and Photonics, Xian 710119, China
Corresponding author:Sun, H.
Source title:Optical Engineering
Abbreviated source title:Opt Eng
Volume:49
Issue:12
Issue date:December 2010
Publication year:2010
Article number:125001
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 scalar four-photon scattering process, the quantum state of a lightwave at the output of fiber is derived by solving the nonlinear Schrdinger equation with a perturbation theory. The joint spectral function of two photons is achieved from the derived quantum state. The dispersion operator involves the third-order dispersion term in the case that the pump wavelength is close to the zero dispersion wavelength. Simulation results show the first-order approximation of our joint spectral function is in excellent agreement with the complicated exact solution. By analyzing the spectral property of the two-photon flux generated by four-photon scattering in photonic-crystal fibers, it is found that the sign of dispersion has very little influence on the spectrum except the slight modulation instability in the anomalous dispersion domain. © 2010 Society of Photo-Optical Instrumentation Engineers.
Number of references:35
Main heading:Multiphoton processes
Controlled terms:Crystal whiskers - Dispersion (waves) - Dispersions - Electromagnetic wave scattering - Fibers - Mathematical operators - Nonlinear equations - Perturbation techniques - Photons - Quantum theory - Spectroscopy
Uncontrolled terms:Anomalous dispersion - Exact solution - First-order approximations - Four-photon scattering - Joint spectral functions - Modulation instabilities - Perturbation theory - Pump wavelength - Quantum state - Schrdinger equations - Simulation result - Spectral properties - Third order dispersion - Two photon - two-photon flux - Zero-dispersion wavelength
Classification code:931.4 Quantum Theory; Quantum Mechanics - 931.3 Atomic and Molecular Physics - 921.1 Algebra - 921 Mathematics - 817 Plastics and Other Polymers: Products and Applications - 951 Materials Science - 812 Ceramics, Refractories and Glass - 801 Chemistry - 741.1 Light/Optics - 711.1 Electromagnetic Waves in Different Media - 711 Electromagnetic Waves - 801.4 Physical Chemistry
DOI:10.1117/1.3516732
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 97>
Accession number:20103713225929
Title:Energy transfer and mid-infrared luminescence properties of Tm<sup>3+</sup>/Dy<sup>3+</sup> codoped chalcohalide glasses
Authors:Zhang, Peng-Jun (1); Dai, Shi-Xun (1); Cao, Ying (1); Peng, Bo (2); Xu, Tie-Feng (1); Nie, Qiu-Hua (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 Academy of Sciences, Xi'an 710119, China; (3) Laboratoire de Verres et Ceramiques, Université de Rennes I, Rennes 35042, France
Corresponding author:Dai, S.-X.(daishixun@nbu.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:30
Issue:9
Issue date:September 2010
Publication year:2010
Pages:2321-2325
Language:Chinese
ISSN:10000593
CODEN:GYGFED
Document type:Journal article (JA)
Publisher:Science Press, 18,Shuangqing Street,Haidian, Beijing, 100085, China
Abstract:A series of chalcohalide glasses based on the composition 0.9(Ge<inf>25</inf>Ga<inf>5</inf>S<inf>70</inf>)-0.1CsI doped with the different Tm<sup>3+</sup>/Dy<sup>3+</sup> ions ratio were synthesized by melt-quenching technique. The absorption spectra, and mid-infrared fluorescence of different glass samples under 800 nm laser excitation were measured. The results prove that, Tm<sup>3+</sup> is an efficient sensitizer, which can enhance the Dy<sup>3+</sup>: 2.9 μm fluorescence intensity significantly. A decrease in the intensity of 1.8 μm fluorescence and lifetimes of the Tm<sup>3+</sup>: <sup>3</sup>F<inf>4</inf> level occurred with increasing the concentration of Dy<sup>3+</sup> ions from 0 to 1 Wt% where Tm<sup>3+</sup> concentration was fixed to 0.5 Wt%. Also a wide spectral overlap between Tm<sup>3+</sup>: 1.8 μm emission and the absorption of Dy<sup>3+</sup>: <sup>6</sup>H<inf>15/2</inf> &rarr <sup>6</sup>H<inf>11/2</inf> showed that the effective energy transfer between the two rare-earth ions was mainly attributed to the resonance energy from Tm<sup>3+</sup>: <sup>3</sup>F<inf>4</inf> to Dy<sup>3+</sup>: <sup>6</sup>H<inf>11/2</inf> level.
Number of references:19
Main heading:Glass lasers
Controlled terms:Absorption - Doping (additives) - Energy transfer - Fluorescence - Germanium - Glass - Infrared devices - Infrared lasers - Ions - Laser excitation
Uncontrolled terms:Chalcohalide glass - Co-doped - Effective energy - Fluorescence intensities - Glass samples - Melt quenching techniques - Mid-infrared emission - Mid-infrared luminescences - Midinfrared - Rare earth ions - Resonance energies - Spectral overlap
Classification code:812.3 Glass - 804 Chemical Products Generally - 801.4 Physical Chemistry - 801 Chemistry - 931.2 Physical Properties of Gases, Liquids and Solids - 744.9 Laser Applications - 741.3 Optical Devices and Systems - 741.1 Light/Optics - 641.2 Heat Transfer - 744.1 Lasers, General
DOI:10.3964/j.issn.1000-0593(2010)09-2321-05
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 98>
Accession number:20101412826687
Title:Generation of synchronized femtosecond and picosecond laser pulses in a two-beam-pumped Ti:sapphire 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 Acad. of Sci., Xi'an 710119, China
Corresponding author:Zhu, C.(cjzhu@xpu.edu.cn)
Source title:Chinese Optics Letters
Abbreviated source title:Chin. Opt. Lett.
Volume:8
Issue:2
Issue date:February 2010
Publication year:2010
Pages:194-196
Language:English
ISSN:16717694
Document type:Journal article (JA)
Publisher:Science Press, 18,Shuangqing Street,Haidian, Beijing, 100085, China
Abstract:Two operating modes, independent self-mode-locking and cross-mode-locking, are presented in a two-beam-pumped double-cavity dual-wavelength femtosecond Ti:sapphire laser. Synchronization of femtosecond and picosecond laser pulses is achieved by properly adjusting the cavity length matching and distributing the pump laser powers in the two laser cavities, and moreover, a timing jitter of 517 fs between femtosecond and picosecond pulses is obtained, with wavelength tuning ranges around 36 and 22 nm in the femtosecond and picosecond cavities, respectively. © 2010 Chinese Optics Letters.
Number of references:20
Main heading:Laser mode locking
Controlled terms:Laser pulses - Pulsed laser applications - Pumping (laser) - Sapphire - Timing jitter
Uncontrolled terms:Cavity length - Dual-wavelength - Femtoseconds - Laser cavity - Modelocking - Operating modes - Pico-second pulse - Picosecond laser pulse - Picoseconds - Pump laser - Self mode locking - Ti: Sapphire laser - Wavelength-tuning range
Classification code:744.9 Laser Applications - 744.1 Lasers, General - 722.3 Data Communication, Equipment and Techniques - 718 Telephone Systems and Related Technologies; Line Communications - 717 Optical Communication - 716 Telecommunication; Radar, Radio and Television - 482.2.1 Gems
DOI:10.3788/COL20100802.0194
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 99>
Accession number:20101912923492
Title:Study of dielectric barrier discharge nonequilibrium plasma-assisted combustion for more efficient engine
Authors:Tang, Jie (1); Duan, Yi-Xiang (1); Zhao, Wei (1); Luo, Wen-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
Corresponding author:Tang, J.(tangjie1979@opt.ac.cn)
Source title:Gaodianya Jishu/High Voltage Engineering
Abbreviated source title:Gaodianya Jishu
Volume:36
Issue:3
Issue date:March 2010
Publication year:2010
Pages:733-738
Language:Chinese
ISSN:10036520
CODEN:GAJIE5
Document type:Journal article (JA)
Publisher:Science Press, 18,Shuangqing Street,Haidian, Beijing, 100085, China
Abstract:The principle of activation of fuel or air by nonequilibrium plasmas is presented, and the probable process of formation of excited components that support the chain propagation reactions is discussed. The main body frame of nonequilibrium plasma reactor is put forward based on characters of the dielectric barrier discharge equipment with tube-tube configurations, and the feasibility of the design scheme is theoretically elucidated. Experiments on propane combustion were carried out using the nonequilibrium plasma reactor we designed. The experimental results show that nonequilibrium plasma can improve hydrocarbon combustion, and make it to be burnt more completely. The technology of nonequilibrium plasma-assisted combustion for more efficient engine is validated effectively.
Number of references:17
Main heading:Plasmas
Controlled terms:Combustion - Dielectric devices - Electric discharges - Flow control - Fuels - Hydrocarbons - Plasma applications - Propane
Uncontrolled terms:Dielectric barrier discharges - Fuel activation - Lean burn - Nonequilibrium plasmas - Plasma reactors
Classification code:932.3 Plasma Physics - 804.1 Organic Compounds - 803 Chemical Agents and Basic Industrial Chemicals - 731.3 Specific Variables Control - 714 Electronic Components and Tubes - 708.1 Dielectric Materials - 704 Electric Components and Equipment - 701.1 Electricity: Basic Concepts and Phenomena - 631.1 Fluid Flow, General - 524 Solid Fuels - 523 Liquid Fuels - 522 Gas Fuels - 521.1 Fuel Combustion
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 100>
Accession number:20100512680892
Title:Performance of an improved logarithmic phase mask with optimized parameters in a wavefront-coding system
Authors:Zhao, Hui (1); Li, Yingcai (1)
Author affiliation:(1) Space Optics Lab., Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Science, China
Corresponding author:Zhao, H.(zhaohui1981.zju@gmail.com)
Source title:Applied Optics
Abbreviated source title:Appl. Opt.
Volume:49
Issue:2
Issue date:January 10, 2010
Publication year:2010
Pages:229-238
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:In two papers [Proc. SPIE 4471, 272-280 (2001) and Appl. Opt. 43, 2709-2721 (2004)], a logarithmic phase mask was proposed and proved to be effective in extending the depth of field; however, according to our research, this mask is not that perfect because the corresponding defocused modulation transfer function has large oscillations in the low-frequency region, even when the mask is optimized. So, in a previously published paper [Opt. Lett. 33, 1171-1173 (2008)], we proposed an improved logarithmic phase mask by making a small modification. The new mask can not only eliminate the drawbacks to a certain extent but can also be even less sensitive to focus errors according to Fisher information criteria. However, the performance comparison was carried out with the modified mask not being optimized, which was not reasonable. In this manuscript, we optimize the modified logarithmic phase mask first before analyzing its performance and more convincing results have been obtained based on the analysis of several frequently used metrics. © 2010 Optical Society of America.
Number of references:12
Main heading:Optimization
Controlled terms:Fisher information matrix - Spacecraft
Uncontrolled terms:Coding system - Depth of field - Fisher information - Low frequency regions - Modulation transfer function - Optimized parameter - Performance comparison - Phase masks
Classification code:655.1 Spacecraft, General - 921.5 Optimization Techniques - 922 Statistical Methods
DOI:10.1364/AO.49.000229
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 101>
Accession number:20100112606902
Title:Deterministic column-based matrix decomposition
Authors:Li, Xuelong (1); Pang, Yawei (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) School of Electronic Information Engineering, Tianjin University, Tianjin 300072, China
Corresponding author:Li, X.(xuelong_li@opt.ac.cn)
Source title:IEEE Transactions on Knowledge and Data Engineering
Abbreviated source title:IEEE Trans Knowl Data Eng
Volume:22
Issue:1
Issue date:January 2010
Publication year:2010
Pages:145-149
Article number:4798166
Language:English
ISSN:10414347
CODEN:ITKEEH
Document type:Journal article (JA)
Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States
Abstract:In this paper, we propose a deterministic column-based matrix decomposition method. Conventional column-based matrix decomposition (CX) computes the columns by randomly sampling columns of the data matrix. Instead, the newly proposed method (termed as CX-D) selects columns in a deterministic manner, which well approximates singular value decomposition. The experimental results well demonstrate the power and the advantages of the proposed method upon three real-world data sets. © 2006 IEEE.
Number of references:26
Main heading:Singular value decomposition
Controlled terms:Feature extraction - Learning systems
Uncontrolled terms:Conventional columns - Data matrices - Dimensionality reduction. - Incremental learning - Matrix decomposition - Real world data
Classification code:751.1 Acoustic Waves - 741.1 Light/Optics - 731.5 Robotics - 921 Mathematics - 723.5 Computer Applications - 716 Telecommunication; Radar, Radio and Television - 461.4 Ergonomics and Human Factors Engineering - 723.4 Artificial Intelligence
DOI:10.1109/TKDE.2009.64
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 102>
Accession number:20100912741452
Title:Research on the correlation between the optical gap and chemical bond in sulphur and selenium co-doped chalco-halide glasses
Authors:Zhu, Mingxing (1); Nie, Qiuhua (1); Wang, Xunsi (1); Dai, Shixun (1); Zhang, Xianghua (1); Shen, Xiang (1); Wang, Guoxiang (1); Lv, Xin (1)
Author affiliation:(1) Faculty of Information Science and Engineering, Ningbo University, Zhejiang 315211, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Acadamy of Science, Xi'an, 710119, China; (3) Institute de Chimie de Rennes, Université de Rennes, Rennes Cedex 135042, France
Corresponding author:Zhu, M.(karyke@163.com)
Source title:Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy
Abbreviated source title:Spectrochim. Acta Part A Mol. Biomol. Spectrosc.
Volume:75
Issue:4
Issue date:April 2010
Publication year:2010
Pages:1275-1279
Language:English
ISSN:13861425
CODEN:SAMCAS
Document type:Journal article (JA)
Publisher:Elsevier, P.O. Box 211, Amsterdam, 1000 AE, Netherlands
Abstract:The Ge-Ga-Se-S-CsCl glasses were prepared by the melting-quenching method. The absorption and transmission spectrum were measured under room temperature. It is found that these glasses have high broad spectral range of transparency from visible to far-infrared region (0.4-12 μm). The relationship between the optical gap and chemical composition in terms of novel chalco-halide glasses is discussed based on the Pauling's theory model, which is using the modified heats of atomization and the coordination number of the elements, to explain this phenomena for the first time. © 2009 Elsevier B.V. All rights reserved.
Number of references:28
Main heading:Glass
Controlled terms:Absorption spectroscopy - Chemical bonds - Chemical elements - Gallium - Germanium - Optical correlation - Optically pumped lasers - Selenium - Sulfur
Uncontrolled terms:Broad spectral - Chemical compositions - Co-doped - Coordination number - Far-infrared regions - IR spectrum - Optical gap - Room temperature - Theory model - Transmission spectrums
Classification code:941.4 Optical Variables Measurements - 941.3 Optical Instruments - 812.3 Glass - 804 Chemical Products Generally - 801.4 Physical Chemistry - 801 Chemistry - 744.1 Lasers, General - 741.1 Light/Optics - 741 Light, Optics and Optical Devices - 712.1.1 Single Element Semiconducting Materials - 549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals
DOI:10.1016/j.saa.2009.12.054
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 103>
Accession number:20104713408869
Title:Improved digital processing method used for image motion measurement based on hybrid opto-digital joint transform correlator
Authors:Yi, Hongwei (1); Zhao, Hui (1); Li, Yingcai (1); Wen, Desheng (1)
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China
Corresponding author:Zhao, H.(zhaohui@opt.ac.cn)
Source title:Chinese Optics Letters
Abbreviated source title:Chin. Opt. Lett.
Volume:8
Issue:10
Issue date:October 2010
Publication year:2010
Pages:989-992
Language:English
ISSN:16717694
Document type:Journal article (JA)
Publisher:Science Press, 18,Shuangqing Street,Haidian, Beijing, 100085, China
Abstract:Hybrid opto-digital joint transform correlator (HODJTC) is effective for image motion measurement, but it is different from the traditional joint transform correlator because it only has one optical transform and the joint power spectrum is directly input into a digital processing unit to compute the image shift. The local cross-correlation image can be directly obtained by adopting a local Fourier transform operator. After the pixel-level location of cross-correlation peak is initially obtained, the up-sampling technique is introduced to relocate the peak in even higher accuracy. With signal-to-noise ratio ≥ 20 dB, up-sampling factor k ≥ 10 and the maximum image shift &le 60 pixels, the root-mean-square error of motion measurement accuracy can be controlled below 0.05 pixels. © 2010 Chinese Optics Letters.
Number of references:17
Main heading:Pixels
Controlled terms:Fourier transforms - Measurements - Optical correlation - Processing - Signal to noise ratio
Uncontrolled terms:Cross correlations - Digital processing - Image motion - Image shifts - Joint power spectrum - Joint transform correlators - Level location - Motion measurements - Optical transform - Root-mean square errors - Sampling factor - Sampling technique - Traditional joints
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 - 921.3 Mathematical Transformations - 913.4 Manufacturing - 741.1 Light/Optics - 723.5 Computer Applications - 716.1 Information Theory and Signal Processing
DOI:10.3788/COL20100810.0989
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 104>
Accession number:20110113546715
Title:The Influence of SiO<inf>2</inf> shell on fluorescent properties of LaF<inf>3</inf>:Nd<sup>3+</sup>/SiO<inf>2</inf> core/shell nanoparticles
Authors:Bo, Peng (1); Kai, Cui (1); Chao, Gao (1); Wei, Wei (3)
Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Science (CAS), Xian 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:Bo, P.(bpeng@opt.ac.cn)
Source title:Journal of Nanomaterials
Abbreviated source title:J. Nanomater.
Volume:2010
Issue date:2010
Publication year:2010
Article number:238792
Language:English
ISSN:16874110
E-ISSN:16874129
Document type:Journal article (JA)
Publisher:Hindawi Publishing Corporation, 410 Park Avenue, 15th Floor, 287 pmb, New York, NY 10022, United States
Abstract:Distinct effects of the Si O 2 shell on fluorescence properties of LaF <inf>3</inf>:Nd<sup>3+</sup>/SiO<inf>2</inf> core/shell nanoparticles were demonstrated by annealling the nanoparticles at different temperatures. Emission spectra, excitation spectra, and decay curves of the nanoparticles were measured. A significant improvement of fluorescence intensity was observed for LaF<inf>3</inf>:Nd<sup>3+</sup>/SiO<inf>2</inf>core/shell nanoparticles annealed at 900 °C. The phenomenon is ascribed to the change of environment of LaF<inf>3</inf>:Nd<sup>3+</sup> core which is imposed by SiO<inf>2</inf> shell. And the change is confirmed by the excitation spectra. It provides a useful way to improve fluorescent intensity of the Si O 2-coated La F 3:N d 3+ nanoparticles. The lifetime for nanoparticles annealed at 900 °C shows a slight decrease contrast with nanoparticles annealed at 400 and 600 °C. This is caused by the higher phonon energy of SiO<inf>2</inf> than that of La F <inf>3</inf>. Copyright © 2010 Cui Kai et al.
Number of references:17
Main heading:Nanoparticles
Controlled terms:Annealing - Emission spectroscopy - Excited states - Fluorescence - Neodymium - Silicon compounds
Uncontrolled terms:Change of environment - Core/shell nanoparticles - Decay curves - Emission spectrums - Excitation spectrum - Fluorescence intensities - Fluorescence properties - Fluorescent intensity - Fluorescent property - Phonon energies
Classification code:931.3 Atomic and Molecular Physics - 804.1 Organic Compounds - 761 Nanotechnology - 933 Solid State Physics - 741.1 Light/Optics - 547.2 Rare Earth Metals - 537.1 Heat Treatment Processes - 708 Electric and Magnetic Materials
DOI:10.1155/2010/238792
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 105>
Accession number:20100612700646
Title:Influence of the time modulation of the pump laser caused by mode beating on optical parametric process
Authors:Sun, Qibing (1); Liu, Hongjun (1); Huang, Nan (1); Long, Hanbo (1); Wen, Jin (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:Sun, Q.
Source title:Optics Express
Abbreviated source title:Opt. Express
Volume:18
Issue:3
Issue date:February 1, 2010
Publication year:2010
Pages:3101-3108
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:Numerical simulation and analysis about the influence of the time modulation of the pump laser caused by mode beating on optical parametric process are presented with OPA and OPG as examples. It is shown that the output power of the generated beams from optical parametric process is modulated in the time domain and exhibits large power fluctuations, when a Q-switched laser oscillating on several random longitudinal modes is used as the pump laser. Irregular spike sequences of the generated beams are observed. We also find that the output power of the light from optical parametric process becomes more stable and exhibits a less fluctuation, when the number of the longitudinal modes (n) increases. © 2010 Optical Society of America.
Number of references:29
Main heading:Pumping (laser)
Controlled terms:Computer simulation - Pumps - Q switching
Uncontrolled terms:Large power - Longitudinal modes - Mode beating - Numerical simulation - Optical parametric process - Output power - Pump laser - Time domain - Time modulation
Classification code:618.2 Pumps - 723.5 Computer Applications - 744.1 Lasers, General - 744.8 Laser Beam Interactions
DOI:10.1364/OE.18.003101
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 106>
Accession number:20104913463928
Title:Efficient green-light generation by frequency doubling of a picosecond all-fiber ytterbium-doped fiber amplifier in PPKTP waveguide inscribed by femtosecond laser direct writing
Authors:Tu, Chenghou (1); Huang, Zhangchao (1); Lou, Kai (1); Liu, Hongjun (2); Wang, Yishan (2); Li, Yongnan (1); Lu, Fuyun (1); Wang, Hui-Tian (1)
Author affiliation:(1) School of Physics, Nankai University, Tianjin 300071, China; (2) State Key Laboratory of Transient Optics and Photonics Technology, Xi'an Institute of Optics and PrecisionMechanics, Chinese Academy of Sciences, Xi'an, 710119, China; (3) National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, China
Corresponding author:Tu, C.(htwang@nankai.edu.cn)
Source title:Optics Express
Abbreviated source title:Opt. Express
Volume:18
Issue:24
Issue date:November 22, 2010
Publication year:2010
Pages:25183-25191
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 have demonstrated an ultrashort, compact green light radiation by frequency doubling of an all-fiber ytterbium-doped fiber laser source in a PPKTP waveguide fabricated by femtosecond laser pulses. Using the fabricated PPKTP waveguide crystal containing a 10 mm single grating with a period of 9.0 μm, we generate 310 mW of picosecond radiation at 532 nm for a fundamental power of 1.6W, corresponding to a conversion efficiency of 19.3%. The temperature tuning range of 8°C is achieved for a fixed fundamental wavelength of 1064 nm, the FWHM of the wavelength tuning curve is 4.2 nm at room temperature. The generated ultrashort pulses at 532 nm are of great importance and have comprehensive applications in photobiology research and high-resolution spectroscopy. © 2010 Optical Society of America.
Number of references:30
Main heading:Ultrashort pulses
Controlled terms:Conversion efficiency - Fiber amplifiers - Fibers - Frequency doublers - Light - Pulsed laser applications - Spectroscopic analysis - Tuning - Ultrafast lasers - Waveguides - Ytterbium
Uncontrolled terms:1064 nm - All fiber - Femto-second laser - Femtosecond laser pulse - Frequency-doubling - Fundamental wavelength - Green light - Green-light generations - High-resolution spectroscopy - Photobiology - Picosecond radiation - Picoseconds - Room temperature - Single grating - Temperature tuning range - Waveguide crystals - Wavelength tuning - Ytterbium doped fibers - Ytterbium-doped fiber lasers
Classification code:812 Ceramics, Refractories and Glass - 801 Chemistry - 744 Lasers - 741.1.2 Fiber Optics - 817 Plastics and Other Polymers: Products and Applications - 741.1 Light/Optics - 713.5 Electronic Circuits Other Than Amplifiers, Oscillators, Modulators, Limiters, Discriminators or Mixers - 547.2 Rare Earth Metals - 525.5 Energy Conversion Issues - 714.3 Waveguides
DOI:10.1364/OE.18.025183
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 107>
Accession number:20104113284185
Title:Experimental investigation of square dissipative soliton generation and propagation
Authors:Mao, Dong (1); Liu, Xueming (1); Wang, Leiran (1); Lu, Hua (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:49
Issue:25
Issue date:September 1, 2010
Publication year:2010
Pages:4751-4755
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 have experimentally investigated the generation and propagation of square dissipative solitons emitted from an erbium-doped fiber laser with large normal cavity dispersion. The square pulse exhibits an approximately Gaussian spectral profile and large frequency chirp on its edges. When the square pulse propagates through a segment of single-mode fiber (SMF), it can be shaped to a Gaussian pulse and the corresponding spectrum will have a redshift with a prolonged wing on the longer wavelength. Our experiments show that the pulse evolution in the SMF is determined by the combined effects of the fiber dispersion, intrapulse Raman scattering, and the pulse initial chirps. © 2010 Optical Society of America.
Number of references:23
Main heading:Dispersion (waves)
Controlled terms:Erbium - Fiber lasers - Solitons
Uncontrolled terms:Combined effect - Dissipative solitons - Erbium doped fiber laser - Experimental investigations - Fiber dispersion - Frequency chirp - Gaussian pulse - Gaussians - Initial chirp - Intrapulse Raman scattering - Pulse evolution - Red shift - Spectral profile - Square pulse
Classification code:547.2 Rare Earth Metals - 711.1 Electromagnetic Waves in Different Media - 741.1.2 Fiber Optics - 931.3 Atomic and Molecular Physics
DOI:10.1364/AO.49.004751
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 108>
Accession number:20110813673605
Title:The design and control of fine tracking loop of ATP system for free space laser communication
Authors:Xing, Wei (1); Liang, Yanbing (1); Liu, Shuang (1)
Author affiliation:(1) Photoelectric Measurement and Control Technology Research Department, Xi'an Institute of Optics and Precision Mechanics of Chinese Academy of Sciences, Xi'an, China
Corresponding author:Xing, W.
Source title:2nd International Conference on Information Engineering and Computer Science - Proceedings, ICIECS 2010
Abbreviated source title:Int. Conf. Inf. Eng. Comput. Sci. - Proc., ICIECS
Monograph title:2nd International Conference on Information Engineering and Computer Science - Proceedings, ICIECS 2010
Issue date:2010
Publication year:2010
Article number:5677752
Language:English
ISBN-13:9781424479412
Document type:Conference article (CA)
Conference name:2nd International Conference on Information Engineering and Computer Science, ICIECS 2010
Conference date:December 25, 2010 - December 26, 2010
Conference location:Wuhan, China
Conference code:83781
Sponsor:Res. Assoc. Mod. Educ. Comput. Sci. (RAMECS); Wuhan University; Wuhan University and Technology; National Technology University of Ukraine; Columbia University; Hubei University of Technology
Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States
Abstract:High accuracy of laser-beam pointing is crucial for reliable operation of Free Space Laser Communication. The tracking accuracy and bandwidth of rejection frequency response are directly determined by the performance of the fine tracking loop of Acquisition, Tracking and Pointing (ATP) system. In this paper, the architecture of the fine tracking system for the designing optical communication terminal is described. And each component's unique function, hardware choice and operating principle will be discussed. Furthermore, in order to track with the beacon real time and high precisely, a novel control algorithm is presented in this paper - dynamic matrix control (DMC), which performs well in tracking system and compared with traditional PID control it has many advantages such as better Robust, less demanding on the system model and better control effect. ©2010 IEEE.
Number of references:8
Main heading:Tracking (position)
Controlled terms:Algorithms - Computer science - Frequency response - Navigation - Optical communication - Proportional control systems - Three term control systems - Two term control systems
Uncontrolled terms:APT - Beam pointing - Control algorithms - Design and control - DMC - Dynamic matrix control - Fine tracking - Free space laser communications - Operating principles - Optical communication terminals - PID control - Real time - Reliable operation - System models - Tracking accuracy - Tracking loop - Tracking system
Classification code:731.1 Control Systems - 723 Computer Software, Data Handling and Applications - 722 Computer Systems and Equipment - 921 Mathematics - 721 Computer Circuits and Logic Elements - 716.3 Radio Systems and Equipment - 716.2 Radar Systems and Equipment - 717.1 Optical Communication Systems
DOI:10.1109/ICIECS.2010.5677752
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 109>
Accession number:20105013487554
Title:New scheme of Sagnac interferometric fiber-optic current sensor insensible to mechanical vibration
Authors:Mu, Jie (1); Zhao, Wei (1); Wang, Jia (1); Xu, Jin-Tao (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 Academy of Science, Beijing, 100049, China
Corresponding author:Mu, J.(mujie0328@gmail.com)
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:7656
Issue:PART 1
Monograph title:5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment
Issue date:2010
Publication year:2010
Article number:76563W
Language:English
ISSN:0277786X
CODEN:PSISDG
ISBN-13:9780819480866
Document type:Conference article (CA)
Conference name:5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment
Conference date:April 26, 2010 - April 29, 2010
Conference location:Dalian, China
Conference code:82772
Sponsor:The Chinese Optical Society (COS); CAS, The Institute of Optics and Electronics (IOE); The Society of Photo-Optical Instrumentation Engineers (SPIE)
Publisher:SPIE, P.O. Box 10, Bellingham, WA 98227-0010, United States
Abstract:A new scheme of Sagnac interferometer fiber-optic current sensor insensible to mechanical vibration is presented. This scheme eliminates the Sagnac effect, which is responsible for the sensitivity to vibration according to theoretical analysis with Jones matrix. The improvement to the conventional Sagnac interferometer fiber-optic current sensor is achieved by changing the structure of sensing fiber coil. This coil is fabricated by the bifilar winding technique, and it consists of one half-wave plate embedded in the middle of sensing optical fiber and one quarter-wave plate rotated by 90 degrees in its lower input port. Experimental results suggest that, compared to the conventional design, this new-structured Sagnac interferometer fiber-optic current sensor has much better performance against strong mechanical vibration at accelerations up to 20 g and frequencies from 10 to 400 Hz. Furthermore, the current measurement accuracy of the improved fiber-optic current sensor achieves the 0.2-level at an acceleration of 20 g and a frequency of 150 Hz. © 2010 Copyright SPIE - The International Society for Optical Engineering.
Number of references:15
Main heading:Vibration analysis
Controlled terms:Acceleration - Fiber optic sensors - Fiber optics - Fibers - Interferometers - Manufacture - Measurement theory - Optical fiber fabrication - Optical fibers - Optical testing - Plates (structural components) - Sensors - Technology
Uncontrolled terms:Current sensors - Jones matrix - Sagnac effect - vibration - wave plate
Classification code:943.2 Mechanical Variables Measurements - 941.4 Optical Variables Measurements - 941.3 Optical Instruments - 931.1 Mechanics - 922 Statistical Methods - 901 Engineering Profession - 817 Plastics and Other Polymers: Products and Applications - 812 Ceramics, Refractories and Glass - 801 Chemistry - 741.3 Optical Devices and Systems - 741.1.2 Fiber Optics - 537.1 Heat Treatment Processes - 408.2 Structural Members and Shapes
DOI:10.1117/12.863862
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 110>
Accession number:20105013487050
Title:An open-loop sin microstepping driver based on FPGA and the co-simulation of modelsim and simulink
Authors:Li, Yan (1); Huo, Jing (1); Li, Xin (1); Wen, Jin (1); Wang, Yaohui (1); Shan, Bin (1)
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics of CAS, Xi'an Shanxi Province 710119, China
Corresponding author:Li, Y.(huojing@opt.ac.cn)
Source title:2010 International Conference on Computer, Mechatronics, Control and Electronic Engineering, CMCE 2010
Abbreviated source title:Int. Conf. Comput., Mechatronics, Control Electron. Eng., CMCE
Volume:6
Monograph title:2010 International Conference on Computer, Mechatronics, Control and Electronic Engineering, CMCE 2010
Issue date:2010
Publication year:2010
Pages:223-227
Article number:5609859
Language:English
ISBN-13:9781424479566
Document type:Conference article (CA)
Conference name:2010 International Conference on Computer, Mechatronics, Control and Electronic Engineering, CMCE 2010
Conference date:August 24, 2010 - August 26, 2010
Conference location:Changchun, China
Conference code:82724
Sponsor:IEEE Industrial Electronics Society Beijing (Shenzhen) Chapter; Changchun University of Technology; Intelligent Inf. Technol. Appl. Res. Assoc. (IITA Assoc.)
Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States
Abstract:This paper presents a Sin microstepping method which can achieve constant torque, accurate position control and eliminate low frequency oscillation. The driver adopts FPGA as core, achieving 256 subdividing and PID control algorithm. This paper uses EDA Simulator Link as a co-simulation tool, which provides an interface between Modelsim and Simulink accelerating the function verification. The co-simulation result verifies the performance of the control driver algorithm. © 2010 IEEE.
Number of references:6
Main heading:Algorithms
Controlled terms:Mechatronics - Three term control systems
Uncontrolled terms:Cosimulation - FPGA - Micro-stepping - Modelsim - Simulink
Classification code:608 Mechanical Engineering, General - 723 Computer Software, Data Handling and Applications - 731.1 Control Systems - 921 Mathematics
DOI:10.1109/CMCE.2010.5609859
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 111>
Accession number:20104213306296
Title:Theodolite self-stabilization tracking servo system based on mobile platform
Authors:Wang, Chen (1); Ma, Caiwen (1); Hao, Wei (1); Tian, Guangyuan (1)
Author affiliation:(1) Graduate School of Chinese Academy of Science, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Science, Xi'an,Shaanxi,710119, China
Corresponding author:Wang, C.(wangchen@opt.ac.cn)
Source title:Proceedings - 2nd IEEE International Conference on Advanced Computer Control, ICACC 2010
Abbreviated source title:Proc. - IEEE Int. Conf. Adv. Comput. Control, ICACC
Volume:1
Monograph title:Proceedings - 2nd IEEE International Conference on Advanced Computer Control, ICACC 2010
Issue date:2010
Publication year:2010
Pages:98-102
Article number:5487052
Language:English
ISBN-13:9781424458462
Document type:Conference article (CA)
Conference name:2010 IEEE International Conference on Advanced Computer Control, ICACC 2010
Conference date:March 27, 2010 - March 29, 2010
Conference code:81866
Sponsor:Int. Assoc. Comput. Sci. Inf. Technol. (IACSIT); Institute of Electrical and Electronics Engineers (IEEE)
Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States
Abstract:In order to improve the tracking and positioning accuracy of theodolite self-stabilization tracking based on mobile platform, the position of object is transformed from platform coordinate system to earth coordinate system by using coordinate axis circumrotation. A method of forecast tracking technique based on mobile platform is presented. The former compound angle is transform from platform coordinate to earth coordinate. The next compound angle is forecasted in earth coordinate, finally the forecast result is transform to the platform coordinate. The stable tracking technique based on mobile platform is realized. This forecast result is compared with direct forecast in platform coordinate. Tracking and positioning accuracy can be enhanced from 5′ to 1.5′,which fully prove that this forecast technique is more accurate and propitious to realize stable tracking on mobile platform. © 2010 IEEE.
Number of references:8
Main heading:Mobile phones
Controlled terms:Forecasting - Stabilization
Uncontrolled terms:Co-ordinate system - Co-ordinate transformation - Compound angle - Mobile platform - Positioning accuracy - Self-stabilization - Theodolite - Tracking servo systems - Tracking techniques
Classification code:718.1 Telephone Systems and Equipment - 921 Mathematics - 951 Materials Science
DOI:10.1109/ICACC.2010.5487052
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 112>
Accession number:20110413608161
Title:Chinese text detection and location for images in multimedia messaging service
Authors:Yan, Jianqiang (1); Tao, Dacheng (2); Tian, Chunna (1); Gao, Xinbo (1); Li, Xuelong (3)
Author affiliation:(1) VIPS Lab., School of Electronic Engineering, Xidian University, Xi'an 710071, China; (2) School of Computer Engineering, Nanyang Technological University, Singapore 639798, 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, Shaanxi, China
Corresponding author:Yan, J.(yanjianqiang@gmail.com)
Source title:Conference Proceedings - IEEE International Conference on Systems, Man and Cybernetics
Abbreviated source title:Conf. Proc. IEEE Int. Conf. Syst. Man Cybern.
Monograph title:2010 IEEE International Conference on Systems, Man and Cybernetics, SMC 2010
Issue date:2010
Publication year:2010
Pages:3896-3901
Article number:5641748
Language:English
ISSN:1062922X
CODEN:PICYE3
ISBN-13:9781424465880
Document type:Conference article (CA)
Conference name:2010 IEEE International Conference on Systems, Man and Cybernetics, SMC 2010
Conference date:October 10, 2010 - October 13, 2010
Conference location:Istanbul, Turkey
Conference code:83423
Publisher:Institute of Electrical and Electronics Engineers Inc., 3 Park Avenue, 17th Floor, New York, NY 10016-5997, United States
Abstract:Text detection and recognition for images in multimedia messaging service is a very important task. Since Chinese characters are composed of four kinds of strokes, i.e., horizontal line, top-down vertical line, left-downward slope line and short pausing stroke, we present Gabor filters with scale and direction varied to describe the strokes of Chinese characters for candidate text area extraction. By establishing four sub-neural networks to learn the texture of text area, the learnt classifiers are used to detect candidate text areas. Experimental results show that the proposed approach can improve the accuracy of text detection and the recognition rate of images in multimedia messaging service. ©2010 IEEE.
Number of references:18
Main heading:Character recognition
Controlled terms:Cybernetics - Message passing - Neural networks
Uncontrolled terms:Chinese characters - Chinese text - Gabor - Gabor filter - Multimedia messaging service - OCR - Recognition rates - Text areas - Text detection - Topdown - Vertical lines
Classification code:723 Computer Software, Data Handling and Applications
DOI:10.1109/ICSMC.2010.5641748
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 113>
Accession number:20103713224690
Title:Tunable band-pass plasmonic waveguide filters with nanodisk resonators
Authors:Lu, Hua (1); Liu, Xueming (1); Mao, Dong (1); Wang, Leiran (1); Gong, Yongkang (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 Express
Abbreviated source title:Opt. Express
Volume:18
Issue:17
Issue date:August 16, 2010
Publication year:2010
Pages:17922-17927
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 and simple plasmonic filter based on metal-insulatormetal plasmonic waveguides with a nanodisk resonator is proposed and investigated numerically. By the resonant theory of disk-shaped nanocavity, we find that the resonance wavelengths can be easily manipulated by adjusting the radius and refractive index of the nanocavity, which is in good agreement with the results obtained by finite-difference time-domain (FDTD) simulations. In addition, the bandwidths of resonance spectra are tunable by changing the coupling distance between the nanocavity and waveguides. This result achieved by FDTD simulations can be accurately analyzed by temporal coupled mode theory. Our filters have important potential applications in high-density plasmonic integration circuits. © 2010 Optical Society of America.
Number of references:26
Main heading:Plasmons
Controlled terms:Bandpass filters - Finite difference time domain method - Refractive index - Resonance - Resonators - Waveguide components
Uncontrolled terms:Band pass - Coupled mode theory - FDTD simulations - Filter-based - Finite-difference time-domain simulation - High-density - Nano-cavities - Nanodisks - Plasmonic - Plasmonic waveguides - Potential applications - Resonance spectrum - Resonance wavelengths
Classification code:921 Mathematics - 741.1 Light/Optics - 714.3 Waveguides - 714 Electronic Components and Tubes - 712.1 Semiconducting Materials - 703.2 Electric Filters - 701 Electricity and Magnetism
DOI:10.1364/OE.18.017922
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 114>
Accession number:20100112614124
Title:Cubic sinusoidal phase mask: Another choice to extend the depth of field of incoherent imaging system
Authors:Zhao, Hui (1); Li, Yingcai (1); Feng, Huajun (2); Xu, Zhihai (2); Li, Qi (2)
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Science, Xi'an, 710119, China; (2) Zhejiang University, State Key Laboratory of Modern Optical Instrumentation, Department of Optical Engineering, Hangzhou, 310027, China
Corresponding author:Zhao, H.(zhaohui1981.zju@gmail.com)
Source title:Optics and Laser Technology
Abbreviated source title:Opt Laser Technol
Volume:42
Issue:4
Issue date:June 2010
Publication year:2010
Pages:561-569
Language:English
ISSN:00303992
CODEN:OLTCAS
Document type:Journal article (JA)
Publisher:Elsevier Ltd, Langford Lane, Kidlington, Oxford, OX5 1GB, United Kingdom
Abstract:Wave-front coding is a well known technique used to extend the depth of field of incoherent imaging system. The core of this technique lies in the design of suitable phase masks, among which the most important one is the cubic phase mask suggested by Dowski and Cathey (1995) [1]. In this paper, we propose a new type called cubic sinusoidal phase mask which is generated by combing the cubic one and another component having the sinusoidal form. Numerical evaluations and real experimental results demonstrate that the composite phase mask is superior to the original cubic phase mask with parameters optimized and provides another choice to achieve the goal of depth extension. © 2009 Elsevier Ltd. All rights reserved.
Number of references:9
Main heading:Wavefronts
Controlled terms:Imaging systems - Optoelectronic devices
Uncontrolled terms:Composite phase - Cubic phase mask - Depth of field - Incoherent imaging - Numerical evaluations - Phase masks - Sinusoidal component - Sinusoidal components
Classification code:751.1 Acoustic Waves - 746 Imaging Techniques - 741.3 Optical Devices and Systems - 741.1 Light/Optics - 741 Light, Optics and Optical Devices - 723.2 Data Processing and Image Processing - 717.2 Optical Communication Equipment - 714.2 Semiconductor Devices and Integrated Circuits - 711 Electromagnetic Waves
DOI:10.1016/j.optlastec.2009.10.004
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 115>
Accession number:20110113551000
Title:Eight-channel Fourier transform computer generated holograms
Authors:Guo, Rongli (1); Yao, Baoli (2); Han, Jun (1); Lu, Shaojun (1); Duan, Cunli (1); Wang, Fan (4)
Author affiliation:(1) School of Optoelectronic Engineering, Xi'an Technological University, Xi'an 710032, 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 School, Chinese Academy of Sciences, Beijing 100049, China; (4) School of Optoelectronic, Beijing Institute of Technology, Beijing 100081, China
Corresponding author:Guo, R.
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:7848
Monograph title:Holography, Diffractive Optics, and Applications IV
Issue date:2010
Publication year:2010
Article number:784839
Language:English
ISSN:0277786X
CODEN:PSISDG
ISBN-13:9780819483782
Document type:Conference article (CA)
Conference name:Holography, Diffractive Optics, and Applications IV
Conference date:October 18, 2010 - October 20, 2010
Conference location:Beijing, China
Conference code:83315
Sponsor:The Society of Photo-Optical Instrumentation Engineers (SPIE); Chinese Optical Society (COS)
Publisher:SPIE, P.O. Box 10, Bellingham, WA 98227-0010, United States
Abstract:A method of encoding eight objects simultaneously in a detour computer generated hologram(CGH) is proposed. In the method, we divide eight objects into two groups and multiple objects are encoded through synthesized spectrum. The simulation demonstrated the effectiveness of the method. In the reconstruction two groups of objects were reconstructed around the same diffraction order along x, y directions, respectively. The result showed that the method can improve the information capacity in a CGH efficiently. © 2010 Copyright SPIE - The International Society for Optical Engineering.
Number of references:12
Main heading:Computer generated holography
Controlled terms:Electron holography - Fourier transforms - Holograms - Lithography - Multiplexing
Uncontrolled terms:Computer generated holograms - Detour phase - Diffraction orders - Fourier - Information capacities - Multiple objects - Multiplexed holograms
Classification code:921.3 Mathematical Transformations - 743.1 Holographic Techniques - 743 Holography - 932 High Energy Physics; Nuclear Physics; Plasma Physics - 718 Telephone Systems and Related Technologies; Line Communications - 716 Telecommunication; Radar, Radio and Television - 714.2 Semiconductor Devices and Integrated Circuits - 717 Optical Communication
DOI:10.1117/12.871674
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 116>
Accession number:20110813677344
Title:Fuzzy adaptive control of free-floating space robot based on dead-zone compensator
Authors:Liu, Shuang (1); Ma, Caiwen (1); Xing, Wei (1); Luo, Cuihua (1)
Author affiliation:(1) Photoelectric Measurement and Control Technology Research Department, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, China
Corresponding author:Liu, S.(shuang8494@126.com)
Source title:Proceedings - 2010 International Symposium on Computational Intelligence and Design, ISCID 2010
Abbreviated source title:Proc. - Int. Symp. Comput. Intell. Des., ISCID
Volume:2
Monograph title:Proceedings - 2010 International Symposium on Computational Intelligence and Design, ISCID 2010
Issue date:2010
Publication year:2010
Pages:47-51
Article number:5692730
Language:English
ISBN-13:9780769541983
Document type:Conference article (CA)
Conference name:3rd International Symposium on Computational Intelligence and Design, ISCID 2010
Conference date:October 29, 2010 - October 31, 2010
Conference location:Hangzhou, China
Conference code:83812
Sponsor:IEEE (Hong Kong) Computational Intelligence Chapter; Bristol University; Zhejiang University; Tsinghua University
Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States
Abstract:This paper proposes a fuzzy adaptive controller based on dead-zone compensator for a free-floating space robot (FFSR) in the presence of the unmodeled nonlinear dynamics and additional disturbances. In the micro-gravity space environment, the FFSR lacks a fixed base. As a result, there is high dynamic coupling between the manipulators and the free-floating base, which leads to two inherent difficulties, which are non-linear parameterization of the dynamic equation and both kinematic and dynamic parameter uncertainties. These uncertainties make the dynamic equation of FFSR more complicated than that of the fix-based comparisons. And the control method for fixbased robot can not be applied directly for the FFSR system. In order to overcome these obstacles, we use the dead-zone compensator including a fuzzy control system to approximate the nonlinear dynamic function. The proposed controller could not only overcome the uncertainty but also efficiently track the desired trajectory of the manipulator joints in a finite time. The stability of the whole system is analyzed and then the structure of the controller is given. Through numerical simulations, the validity of the proposed scheme is also demonstrated. © 2010 IEEE.
Number of references:12
Main heading:Controllers
Controlled terms:Adaptive control systems - Fuzzy control - Manipulators - Robots
Uncontrolled terms:Control methods - Dead-zone - Dynamic equations - Dynamic parameters - Finite time - Fixed base - Floating base - Free-floating space robot - Fuzzy adaptive control - Fuzzy adaptive controller - High dynamic - Manipulator joints - Non-linear - Non-linear dynamics - Nonlinear dynamic functions - Numerical simulation - Space environment - Whole systems
Classification code:731 Automatic Control Principles and Applications - 732.1 Control Equipment - 921 Mathematics
DOI:10.1109/ISCID.2010.100
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 117>
Accession number:20103513195201
Title:Improvement of thermal indium sealing by metal layer growth
Authors:Zhao, Feifei (1); Zhao, Baosheng (1); Li, Wei (3); Sai, Xiaofeng (1); Wei, Yonglin (1); Zou, 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 Chinese Academy of Sciences, Beijing 100039, China; (3) School of Information Engineering, Chang'an University, Xi'an 710064, China
Corresponding author:Zhao, B.(open@opt.ac.cn)
Source title:Zhenkong Kexue yu Jishu Xuebao/Journal of Vacuum Science and Technology
Abbreviated source title:Zhenkong Kexue yu Jishu Xuebao
Volume:30
Issue:4
Issue date:August 2010
Publication year:2010
Pages:351-354
Language:Chinese
ISSN:16727126
CODEN:CKKSDV
Document type:Journal article (JA)
Publisher:Science Press, 18,Shuangqing Street,Haidian, Beijing, 100085, China
Abstract:The paper addressed the enhancement of wettibility of In-Sn alloy on the glass surface, modified with the different multi-layers of Cr, Ni, Cu and Ag, grown by electron beam evaporation. The interfacial microstructures and the wettibility of In-Sn alloy on the glass were characterized with scanning electron microscopy. The results show that the microstructures of the multi-layer improve the we ttibility and spreadability of In-Sn alloy on glass to a varying degree. We suggest that the glass covered with Cr/Ni/Cu/Ag multilayered films outperform that modified with other 4 types of multilayers in thermal indium sealing-better air-tightness and higher rate of the finished products.
Number of references:11
Main heading:Indium
Controlled terms:Alloys - Chromium - Deposition - Electron beams - Film preparation - Glass - Image intensifiers (electron tube) - Image intensifiers (solid state) - Imaging systems - Microstructure - Scanning electron microscopy - Silver - Thin films - Tin - Tin alloys - Vacuum - Vacuum deposition
Uncontrolled terms:Airtightness - Electron beam evaporation - Finished products - Gastightness - Glass surfaces - Image intensifiers - In-Sn alloys - Interfacial microstructure - Metal layer - Multi-layered films - Spreadability - Thermal indium seal
Classification code:951 Materials Science - 714.2 Semiconductor Devices and Integrated Circuits - 741 Light, Optics and Optical Devices - 741.1 Light/Optics - 746 Imaging Techniques - 812.3 Glass - 813.1 Coating Techniques - 932 High Energy Physics; Nuclear Physics; Plasma Physics - 933 Solid State Physics - 714.1 Electron Tubes - 531.1 Metallurgy - 543.1 Chromium and Alloys - 546.2 Tin and Alloys - 712.1 Semiconducting Materials - 547.1 Precious Metals - 633 Vacuum Technology - 633.1 Vacuum Applications - 549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 118>
Accession number:20104613380490
Title:Third-order nonlinear optical properties of GeS<inf>2</inf>-Sb <inf>2</inf>S<inf>3</inf>-CdS chalcogenide glasses
Authors:Guo, Haitao (1); Hou, Chaoqi (1); Gao, Fei (1); Lin, Aoxiang (1); Wang, Pengfei (1); Zhou, Zhiguang (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 Science (CAS), Xi'an, Shanxi 710119, China
Corresponding author:Peng, B.(bpeng@opt.ac.cn)
Source title:Optics Express
Abbreviated source title:Opt. Express
Volume:18
Issue:22
Issue date:October 25, 2010
Publication year:2010
Pages:23275-23284
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 third-order nonlinear optical properties of GeS<inf>2</inf>-Sb <inf>2</inf>S<inf>3</inf>-CdS chalcogenide glasses were investigated utilizing the Z-scan and femtosecond time-resolved optical Kerr effect (OKE) methods at the wavelength of 800nm, respectively. The compositional dependences were analyzed and the influencing factors including the linear refractive index, the concentration of lone electron pairs, the optical bandgap and the amount of weak covalent/ homopolar bonds were discussed. A glass, i.e. 76GeS <inf>2</inf>·19Sb<inf>2</inf>S<inf>3</inf>·5CdS, with large nonlinear refrative index (n<inf>2</inf> = 5.63 ′ 10<sup>-14</sup> cm <sup>2</sup>/W), low nonlinear absorption coefficient (β = 0.88 cm/GW) and minimum figure of merit (FOM = 2 βλ/n<inf>2</inf> = 2.51)was finally prepared. The electronic contribution in weak heterpolar covalent and homopolar bonds are responsible for large n<inf>2</inf> in chalcogenide glass, and the Sheik-Bahae rule combining the Moss rule are proved to be an effective guidance for estimating the third-order nonlinearities and further optimizing the compositions in chalcogenide glasses. © 2010 Optical Society of America.
Number of references:23
Main heading:Optical Kerr effect
Controlled terms:Cadmium compounds - Cadmium sulfide - Glass - Kerr magnetooptical effect - Magnetic field effects - Nonlinear optics - Refractive index
Uncontrolled terms:CdS - Chalcogenide glass - Compositional dependence - Electronic contributions - Femtosecond time-resolved - Figure of merit - Homopolar bonds - Influencing factor - Large N - Lone electron pair - Nonlinear absorption coefficient - Third order nonlinear optical properties - Third-order non-linearity
Classification code:701.2 Magnetism: Basic Concepts and Phenomena - 741.1 Light/Optics - 741.1.1 Nonlinear Optics - 804 Chemical Products Generally - 812.3 Glass
DOI:10.1364/OE.18.023275
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 119>
Accession number:20093912346575
Title:A multi-frame image super-resolution method
Authors:Li, Xuelong (1); Hu, Yanting (2); Gao, Xinbo (3); Tao, Dacheng (4); Ning, Beijia (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 Shaanxi, China; (2) School of Medical Technology and Engineering, Xinjiang Medical University, Xinjiang 830001, China; (3) School of Electronic Engineering, Xidian University, Xi'an, 710071, China; (4) School of Computer Engineering, Nanyang Technological University, 50 Nanyang Avenue, Blk N4, 639798, Singapore
Corresponding author:Li, X.L.(xuelong_li@opt.ac.cn)
Source title:Signal Processing
Abbreviated source title:Signal Process
Volume:90
Issue:2
Issue date:February 2010
Publication year:2010
Pages:405-414
Language:English
ISSN:01651684
CODEN:SPRODR
Document type:Journal article (JA)
Publisher:Elsevier, P.O. Box 211, Amsterdam, 1000 AE, Netherlands
Abstract:Multi-frame image super-resolution (SR) aims to utilize information from a set of low-resolution (LR) images to compose a high-resolution (HR) one. As it is desirable or essential in many real applications, recent years have witnessed the growing interest in the problem of multi-frame SR reconstruction. This set of algorithms commonly utilizes a linear observation model to construct the relationship between the recorded LR images to the unknown reconstructed HR image estimates. Recently, regularization-based schemes have been demonstrated to be effective because SR reconstruction is actually an ill-posed problem. Working within this promising framework, this paper first proposes two new regularization items, termed as locally adaptive bilateral total variation and consistency of gradients, to keep edges and flat regions, which are implicitly described in LR images, sharp and smooth, respectively. Thereafter, the combination of the proposed regularization items is superior to existing regularization items because it considers both edges and flat regions while existing ones consider only edges. Thorough experimental results show the effectiveness of the new algorithm for SR reconstruction. © 2009 Elsevier B.V. All rights reserved.
Number of references:23
Main heading:Image reconstruction
Controlled terms:Computer vision - Edge detection - Electric reactors - Optical resolving power - Repair - Robot learning
Uncontrolled terms:Fuzzy entropy - High resolution - Ill posed problem - Image super-resolution - Linear observations - Low resolution images - Machine learning - Multi-frame - Real applications - Regularization - Super-resolution - Total variation
Classification code:913.5 Maintenance - 751.1 Acoustic Waves - 741.2 Vision - 741.1 Light/Optics - 741 Light, Optics and Optical Devices - 731.6 Robot Applications - 731.5 Robotics - 723.5 Computer Applications - 723.2 Data Processing and Image Processing - 716 Telecommunication; Radar, Radio and Television - 704.1 Electric Components
DOI:10.1016/j.sigpro.2009.05.028
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 120>
Accession number:20110813689225
Title:Extraction of water bodies from remotely sensed images
Authors:Liu, Jiahang (1); Currit, Nate (3); Meng, Xuelian (3)
Author affiliation:(1) Jiao Tong University, Shanghai, China; (2) Xi'an Institute of Optics and Precise Machines, CAS, Shannxi, China; (3) Texas State University, San Marcos, TX, United States
Corresponding author:Liu, J.
Source title:ISPACS 2010 - 2010 International Symposium on Intelligent Signal Processing and Communication Systems, Proceedings
Abbreviated source title:ISPACS - Int. Symp. Intelligent Signal Process. Commun. Syst., Proc.
Monograph title:ISPACS 2010 - 2010 International Symposium on Intelligent Signal Processing and Communication Systems, Proceedings
Issue date:2010
Publication year:2010
Article number:5704742
Language:English
ISBN-13:9781424473717
Document type:Conference article (CA)
Conference name:18th International Symposium on Intelligent Signal Processing and Communication Systems, ISPACS 2010
Conference date:December 6, 2010 - December 8, 2010
Conference location:Chengdu, China
Conference code:83870
Sponsor:IEEE; IEEE Cheng Du Section; National Natural Science Foundation of China
Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States
Abstract:Extracting water bodies from remotely sensed imagery is an important procedure for many water related studies. It is considered as a challenging problem of automatically and effectively extracting water bodies from remotely sensed images, and many researchers rely on existing Geoinformation System (GIS) data or manual digitizing to obtain water body boundaries. This work firstly generalizes several water body characteristics in optical remotely sensed images and then proposes a segmentation-based water body extraction method. The proposed algorithm exploits several features and uses a perception machine (PM) of neural network (NN) to build a classifier. An overall classification accuracy of 96% indicates that this method holds promise for extracting water bodies from optical remotely sensed images. © 2010 IEEE.
Number of references:14
Main heading:Solvent extraction
Controlled terms:Algorithms - Communication systems - Geographic information systems - Image segmentation - Neural networks - Remote sensing - Signal processing
Uncontrolled terms:Classification accuracy - Extracting water - Extraction method - Geo-information - Perception machine - Remotely sensed imagery - Remotely sensed images - Waterbodies
Classification code:716 Telecommunication; Radar, Radio and Television - 716.1 Information Theory and Signal Processing - 723 Computer Software, Data Handling and Applications - 731.1 Control Systems - 802.3 Chemical Operations - 921 Mathematics
DOI:10.1109/ISPACS.2010.5704742
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 121>
Accession number:20101412827149
Title:Research on spatially modulated Fourier transform imaging spectrometer data processing method
Authors:Huang, Min (1); Xiangli, Bin (1); Lü, Qun-Bo (1); Zhou, Jin-Song (1); Jing, Juan-Juan (1); Cui, Yan (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) Graduate University of Chinese Academy of Sciences, Beijing 100049, China; (3) Academy of Opto-Electronics, Chinese Acad. of Sci., Beijing 100190, 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:30
Issue:3
Issue date:March 2010
Publication year:2010
Pages:855-858
Language:Chinese
ISSN:10000593
CODEN:GYGFED
Document type:Journal article (JA)
Publisher:Science Press, 18,Shuangqing Street,Haidian, Beijing, 100085, China
Abstract:Fourier transform imaging spectrometer is a new technic, and has been developed very rapidly in nearly ten years. The data catched by Fourier transform imaging spectrometer is indirect data, can not be used by user, and need to be processed by various approaches, including data pretreatment, apodization, phase correction, FFT, and spectral radicalization calibration. No paper so far has been found roundly to introduce this method. In the present paper, the author will give an effective method to process the interfering data to spectral data, and with this method we can obtain good result.
Number of references:8
Main heading:Data processing
Controlled terms:Industrial research - Processing - Spectrometers - Spectrometry
Uncontrolled terms:Apodizations - Data processing methods - Fourier transform imaging spectrometers - Phase corrections - Pre-Treatment - Spatial modulation - Spatial modulations - Spectral data
Classification code:941.3 Optical Instruments - 913.4 Manufacturing - 912.1 Industrial Engineering - 941.4 Optical Variables Measurements - 901.3 Engineering Research - 741.3 Optical Devices and Systems - 723.2 Data Processing and Image Processing - 801 Chemistry
DOI:10.3964/j.issn.1000-0593(2010)03-0855-04
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 122>
Accession number:20104713402263
Title:Passive harmonic mode-locking of a fiber laser at controllable repetition rates from fundamental to eighth-order harmonic operation
Authors:Liu, Xueming (1); Wang, Leiran (1); Mao, Dong (1); Li, Xiaohui (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:Journal of Modern Optics
Abbreviated source title:J. Mod. Opt.
Volume:57
Issue:17
Issue date:October 10, 2010
Publication year:2010
Pages:1635-1639
Language:English
ISSN:09500340
E-ISSN:13623044
CODEN:JMOPEW
Document type:Journal article (JA)
Publisher:Taylor and Francis Ltd., 4 Park Square, Milton Park, Abingdon, Oxfordshire, OX14 4RN, United Kingdom
Abstract:We have experimentally reported a passively harmonic mode-locked fiber laser at controllable repetition rates. The pulse train is continuously tunable and controllable from the fundamental cavity frequency to the eighth-order harmonic frequency. The pulses in the proposed laser disappear one by one when the pump power is decreased and, at the same time, the remaining pulses self-organize into a new, stable, uniform distribution in the cavity at each state. The experimental results indicate a supermode suppression of more than 40 dB. By appropriately increasing the coupler output ratio and lengthening the laser cavity, the enhanced mutual influence of the global and local soliton interactions induced by the CW components and the dispersive waves plays the key role in separating pulses stably and uniformly in the cavity. Our laser has the potential to generate chirp-free pulses at even higher rates and shorter pulses for use in future time-division multiplexing systems. © 2010 Taylor & Francis.
Number of references:17
Main heading:Mode-locked fiber lasers
Controlled terms:Fiber lasers - Fibers - Harmonic analysis - Laser mode locking - Multiplexing equipment - Pulse generators - Pumping (laser) - Q switched lasers - Solitons - Time division multiple access
Uncontrolled terms:Cavity frequency - Controllable repetition rate - Dispersive waves - Harmonic frequency - Harmonic operations - Laser cavity - Modelocking - Passive harmonic mode-locking - Pulse train - Pump power - Self-organize - Soliton interactions - Supermode suppression - Uniform distribution
Classification code:921.6 Numerical Methods - 921.1 Algebra - 817 Plastics and Other Polymers: Products and Applications - 812 Ceramics, Refractories and Glass - 744.4 Solid State Lasers - 744.1 Lasers, General - 723 Computer Software, Data Handling and Applications - 718 Telephone Systems and Related Technologies; Line Communications - 717 Optical Communication - 716 Telecommunication; Radar, Radio and Television - 713.4 Pulse Circuits
DOI:10.1080/09500340.2010.514364
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 123>
Accession number:20102212974279
Title:Influence of annealing temperature on the performance of Ge film and photon-counting imaging system
Authors:Zhao, Feifei (1); Zhao, Baosheng (1); Sai, Xiaofeng (1); Zhang, Xinghua (1); Wei, Yonglin (1); Zou, 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, F.(free.ff@163.com)
Source title:Chinese Optics Letters
Abbreviated source title:Chin. Opt. Lett.
Volume:8
Issue:4
Issue date:April 2010
Publication year:2010
Pages:361-364
Language:English
ISSN:16717694
Document type:Journal article (JA)
Publisher:Science Press, 18,Shuangqing Street,Haidian, Beijing, 100085, China
Abstract:Compared with the traditional image intensifier with phosphor screen readout, the photon-counting imaging detector with charge induction readout is more beneficial in several aspects (e.g., good imaging properties and time resolution) to astronomy, reconnaissance, bioluminescence, and materials research. However, the annealing temperature during the tube-making process can affect the properties of the Ge film, and consequently impair the performance of the detector. Therefore, the influence of annealing temperature on Ge film and on the detector is studied in order to determine the crucial parameters. The Ge films are prepared on ceramic and quartz glass by the use of an electron gun. They are analyzed by scanning electron microscope (SEM), high-resistance meter, and X-ray diffraction (XRD). The results show that the optimum substrate and annealing temperature are ceramic plate and 250°C, respectively. © 2010 Chinese Optics Letters.
Number of references:16
Main heading:Annealing
Controlled terms:Ceramic materials - Detectors - Electron beams - Electron guns - Germanium - Imaging systems - Optoelectronic devices - Oxide minerals - Photons - Quartz - Scanning electron microscopy - X ray diffraction
Uncontrolled terms:Annealing temperatures - Ceramic plates - Crucial parameters - Ge films - Image intensifiers - Imaging detector - Imaging properties - Making process - Materials research - Phosphor screens - Photon counting - Quartz glass - Scanning electron microscopes - Time resolution
Classification code:746 Imaging Techniques - 804 Chemical Products Generally - 804.2 Inorganic Compounds - 812.1 Ceramics - 914 Safety Engineering - 931.2 Physical Properties of Gases, Liquids and Solids - 931.3 Atomic and Molecular Physics - 932 High Energy Physics; Nuclear Physics; Plasma Physics - 933.1.1 Crystal Lattice - 741.3 Optical Devices and Systems - 482.2 Minerals - 537.1 Heat Treatment Processes - 549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals - 714.1 Electron Tubes - 714.2 Semiconductor Devices and Integrated Circuits - 717.2 Optical Communication Equipment - 723.2 Data Processing and Image Processing - 741 Light, Optics and Optical Devices - 741.1 Light/Optics
DOI:10.3788/COL20100804.0361
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 124>
Accession number:20104013269193
Title:Multistage etching process for microscopically smooth tellurite glass surfaces in optical fibers
Authors:Zhang, Aidong (1); Lin, Aoxiang (1); Wang, Jau-Sheng (1); Toulouse, Jean (1)
Author affiliation:(1) Department of Physics, Center for Optical Technologies, 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:Zhang, A.
Source title:Journal of Vacuum Science and Technology B: Microelectronics and Nanometer Structures
Abbreviated source title:J Vac Sci Technol B Microelectron Nanometer Struct
Volume:28
Issue:4
Issue date:July-August 2010
Publication year:2010
Pages:682-686
Language:English
ISSN:10711023
CODEN:JVTBD9
Document type:Conference article (CA)
Publisher:AVS Science and Technology Society, 120 Wall Street, 32nd Floor, New York, NY 10005-3993, United States
Abstract:Bulk samples of tellurite glass with composition 75 TeO<inf>2</inf> -20ZnO-5 Na<inf>2</inf>O (TZN) were fabricated by melting and quenching techniques. In order to improve the surface quality of optical fiber preform made with this tellurite glass, the authors developed a multistage etching process. The relationship between successive etching treatments and roughness of the TZN glass surface was probed by using an atomic force microscope. The results demonstrate that this multistage etching method effectively improves this tellurite glass surface smoothness to a level comparable with that of a reference silica glass slide, and the corresponding chemical micromechanisms and fundamentals are discussed and confirmed by atomic force microscopy, potentially contributing to the development of multicomponent soft glass fibers and devices. © 2010 American Vacuum Society.
Number of references:18
Main heading:Etching
Controlled terms:Atomic force microscopy - Glass fibers - Optical fiber fabrication - Optical fibers - Silica - Sodium - Tellurium compounds - Zinc oxide
Uncontrolled terms:Atomic force microscopes - Bulk samples - Etching method - Etching process - Etching treatment - Glass surfaces - Micromechanisms - Multicomponents - Silica glass - Surface qualities - Tellurite glass - ZnO
Classification code:531 Metallurgy and Metallography - 549.1 Alkali Metals - 741.1.2 Fiber Optics - 741.3 Optical Devices and Systems - 804.2 Inorganic Compounds
DOI:10.1116/1.3437017
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 125>
Accession number:20110113551015
Title:Separating misalignment from misfigure in stigmatic null tests of conic mirrors
Authors:Chen, Qinfang (1); Ma, Zhen (1); Li, Yingcai (1); Li, Xuyang (1)
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (2) Graduate School of Chinese Academy of Science, Beijing 100039, China
Corresponding author:Chen, Q.(cqf2009@opt.ac.cn)
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:7849
Monograph title:Optical Design and Testing IV
Issue date:2010
Publication year:2010
Article number:784909
Language:English
ISSN:0277786X
CODEN:PSISDG
ISBN-13:9780819483799
Document type:Conference article (CA)
Conference name:Optical Design and Testing IV
Conference date:October 18, 2010 - October 20, 2010
Conference location:Beijing, China
Conference code:83316
Sponsor:The Society of Photo-Optical Instrumentation Engineers (SPIE); Chinese Optical Society (COS)
Publisher:SPIE, P.O. Box 10, Bellingham, WA 98227-0010, United States
Abstract:Null testing of off-axis conic surface at the pair of conjugate foci can add sensitivity resulting from double pass off the test piece. However, the alignment procedure of the test is difficult. The main reason is that the return wavefront from off-axis aspheric surface is not rotationally symmetric so that the observer cannot tell if the wavefront asymmetries are due to surface or misalignment errors. In this paper, we analyze the effect of misalignments on test results with the optical path method, and derive an equation for misalignment-induced aberrations. Next we present an optimum method for the removal of alignment errors. As an example the method is applied to the alignment of an off-axis mirror. After several alignments, a misaligned test system giving 0.093λ rms wavefront error can be adjusted to 0.024λ, at 0.6328 microns. © 2010 Copyright SPIE - The International Society for Optical Engineering.
Number of references:6
Main heading:Optical testing
Controlled terms:Alignment - Errors - Geometrical optics - Mirrors - Optical design - Surface testing - Wavefronts
Uncontrolled terms:Alignment error - Asphere testing - Conic mirror - Conic surfaces - Double pass - misalignment - Misalignment errors - Null test - Off-axis - Off-axis aspheric - Off-axis mirrors - Optical path - Optimum method - RMS wavefront error - Test pieces - Test results - Test systems
Classification code:423.2 Non Mechanical Properties of Building Materials: Test Methods - 601.1 Mechanical Devices - 731 Automatic Control Principles and Applications - 741.1 Light/Optics - 741.3 Optical Devices and Systems - 921 Mathematics
DOI:10.1117/12.869784
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 126>
Accession number:20102112958553
Title:A new phase diversity wave-front error sensing method based on genetic algorithm
Authors:Liang, Shitong (1); Yang, Jianfeng (1); Xue, Bin (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:Liang, S.(liangshitong@yahoo.cn)
Source title:Guangxue Xuebao/Acta Optica Sinica
Abbreviated source title:Guangxue Xuebao
Volume:30
Issue:4
Issue date:April 2010
Publication year:2010
Pages:1015-1019
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 basic principles of wave-front sensing based on phase diversity (PD) are expatiated. An improved PD based on genetic algorithm (GA) is proposed for the highly nonlinear character of PD's objective function. The parallel and global search features of GA are suitable for the global optimization of PD by analyzing the characters of GA. A sparse-aperture system composed by three sub-apertures with different piston errors is established. The changes of the optimization objective function are analyzed and the new PD based on GA is used to find the global optimal value of the system. The results of many experimental simulations show that: GA can find the global optimum value of the sparse-aperture system, and the root mean square (RMS) between estimated piston error found by GA and the true piston error is 0.04λ. The new PD has a high accuracy.
Number of references:15
Main heading:Genetic algorithms
Controlled terms:Global optimization - Imaging systems - Optimization - Optoelectronic devices - Wavefronts
Uncontrolled terms:Basic principles - Experimental simulations - Global optimum - Global search feature - Highly nonlinear - Objective functions - Optimal values - Optimization objective function - Phase diversity - Root Mean Square - Sparse-aperture - Sub-apertures - Wave-front sensing - Wavefront errors
Classification code:921 Mathematics - 751.1 Acoustic Waves - 746 Imaging Techniques - 741.3 Optical Devices and Systems - 741.1 Light/Optics - 921.5 Optimization Techniques - 741 Light, Optics and Optical Devices - 723 Computer Software, Data Handling and Applications - 717.2 Optical Communication Equipment - 714.2 Semiconductor Devices and Integrated Circuits - 711 Electromagnetic Waves - 723.2 Data Processing and Image Processing
DOI:10.3788/AOS20103004.1015
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 127>
Accession number:20103413175008
Title:Hybrid finite difference method and its application in micro-strip circuit analysis
Authors:Wang, Shengyuan (1); Li, Yushan (2); Cao, Jianzhong (1)
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Acad. of Sci., Xi'an 710119, China; (2) Inst. of Electronic Engineering, Xidian Univ., Xi'an 710071, China; (3) Graduate University of Chinese Acad. of Sci., Beijing 100039, China
Corresponding author:Wang, S.(winsymbol@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:31
Issue:7
Issue date:July 2010
Publication year:2010
Pages:1552-1557
Language:Chinese
ISSN:02543087
CODEN:YYXUDY
Document type:Journal article (JA)
Publisher:Science Press, 18,Shuangqing Street,Haidian, Beijing, 100085, China
Abstract:In this paper, the hybrid finite difference method is used in the analysis and design of micro-strip circuit. This method can deal with the issue that the difference between the spatial resolution and structure size of monolithic microwave integrated circuits (MMIC) needs to be considered. For the geometrical details, such as the edges of micro-strip line planar metal, the quasi-static field simulation is used to estimate the field and current distribution. Then the result is incorporated into the dynamic part of the hybrid method. This will maintain the accuracy of general finite difference method while reducing computational complexity. This method is applied to extract the effective dielectric constant of MMIC. The results of this method are compared with those of conventional finite-difference (FD) method. The two results agree well, which shows the efficiency of HFDM. This method is used to analyze actual micro-strip divider. Numerical results and measurement results demonstrate the accuracy of the proposed method.
Number of references:15
Main heading:Monolithic microwave integrated circuits
Controlled terms:Computational complexity - Electric network analysis - Finite difference method - Microstrip lines - Microwave integrated circuits - Strip metal
Uncontrolled terms:Analysis and design - Circuit analysis - Coarse meshes - Current distribution - Effective dielectric constants - Fine mesh - Finite difference - Hybrid method - Measurement results - Microstripes - Numerical results - Planar metal - Quasistatic field - Spatial resolution - Structure sizes
Classification code:535.1 Metal Rolling - 703.1.1 Electric Network Analysis - 714.2 Semiconductor Devices and Integrated Circuits - 716 Telecommunication; Radar, Radio and Television - 721.1 Computer Theory, Includes Formal Logic, Automata Theory, Switching Theory, Programming Theory - 921.6 Numerical Methods
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 128>
Accession number:20104913457850
Title:Mechanism of high-energy pulse generation without wave breaking in 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:82
Issue:5
Issue date:2010
Publication year:2010
Article number:053808
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 mechanism and intrinsic conditions of high-energy wave-breaking-free pulse generation in fiber lasers mode-locked by a nonlinear polarization rotation technique are investigated numerically and experimentally. Both numerical and experimental results show that the pulses along the two orthogonal polarization axes of the fiber have a large difference in pulse energy. The numerical simulations show that the ratio of the energy of two components is limited and ranges from about 8 to about 65. The slope of the instantaneous frequency at the central position of the pulse decreases rapidly with the increase of the pulse duration and energy, whereas the slope at the pulse edge changes slightly. The accumulation of instantaneous frequency throughout the pulse width approaches a constant in a higher pulse energy regime. Understanding the mechanism and intrinsic conditions of the wave-breaking-free pulse generation could be useful in generating high-energy pulses delivered from fiber lasers. © 2010 The American Physical Society.
Number of references:26
Main heading:Pulse generators
Controlled terms:Electric frequency measurement - Fiber lasers - Fibers - High energy lasers - High energy physics - Liquid waves - Mode-locked fiber lasers - Polarization
Uncontrolled terms:High energy - High energy pulse - Instantaneous frequency - Mode-locked - Nonlinear polarization rotation - Numerical simulation - Orthogonal polarizations - Pulse durations - Pulse energies - Pulse generation - Pulse width - Two-component - Wavebreaking
Classification code:942.2 Electric Variables Measurements - 932.1 High Energy Physics - 931.1 Mechanics - 817 Plastics and Other Polymers: Products and Applications - 812 Ceramics, Refractories and Glass - 744.4 Solid State Lasers - 744.1 Lasers, General - 713.4 Pulse Circuits - 711.1 Electromagnetic Waves in Different Media
DOI:10.1103/PhysRevA.82.053808
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 129>
Accession number:20104913467611
Title:An image quality assessment metric with no reference using hidden Markov tree model
Authors:Gao, Fei (1); Gao, Xinbo (1); Lu, Wen (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, 50 Nanyang Avenue, Blk N4, 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, Shaanxi, China
Corresponding author:Gao, F.
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:7744
Monograph title:Visual Communications and Image Processing 2010
Issue date:2010
Publication year:2010
Article number:774410
Language:English
ISSN:0277786X
CODEN:PSISDG
ISBN-13:9780819482341
Document type:Conference article (CA)
Conference name:Visual Communications and Image Processing 2010
Conference date:July 11, 2010 - July 14, 2010
Conference location:Huangshan, China
Conference code:81851
Sponsor:National Natural Science Foundation of China (NSFC); Chinese Academy of Sciences; Huawei Technologies Company, Ltd.; Microsoft Research Asia
Publisher:SPIE, P.O. Box 10, Bellingham, WA 98227-0010, United States
Abstract:No reference (NR) method is the most difficult issue of image quality assessment (IQA), which does not need the original image or its features as reference and only depends on the statistical law of the natural images. So, the NR-IQA is a high-level evaluation for image quality and simulates the complicated subjective process of human beings. This paper presents a NR-IQA metric based on Hidden Markov Tree (HMT) model. First, the HMT is utilized to model natural images, and the statistical properties of the model parameters are analyzed to mimic variation of image degradation. Then, by estimating the deviation degree of the parameters from the statistical law the distortion metric is constructed. Experimental results show that the proposed image quality assessment model is consistent well with the subjective evaluation results, and outperforms the existing models on difference distortions. © 2010 SPIE.
Number of references:25
Main heading:Image quality
Controlled terms:Communication - Discrete cosine transforms - Image communication systems - Imaging systems - Motion compensation - Quality control - Rating - Statistics - Visual communication
Uncontrolled terms:Deviation degree - Distortion metrics - Hidden Markov tree - Hidden Markov tree model - Human being - Image degradation - Image quality assessment - Model parameters - Natural image statistics - Natural images - No references - Original images - Statistical properties - Subjective evaluations
Classification code:922.2 Mathematical Statistics - 921.3 Mathematical Transformations - 913.3 Quality Assurance and Control - 902.2 Codes and Standards - 741 Light, Optics and Optical Devices - 716.4 Television Systems and Equipment - 716 Telecommunication; Radar, Radio and Television
DOI:10.1117/12.862433
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 130>
Accession number:20125115827571
Title:Compact tunable 10 W picosecond source based on Yb-doped fiber amplification of gain switch laser diode
Authors:Liu, Hongjun (1); Gao, Cunxiao (1); Tao, Jintao (1); Zhao, Wei (1); Wang, Yishan (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:40
Issue date:2010
Publication year:2010
Pages:379-382
Language:English
ISSN:2010376X
E-ISSN:20103778
Document type:Journal article (JA)
Publisher:WASET - World Academy of Science, Engineering and Technology, No: 235 Eski Edirne Asfalti, Istanbul, 34045, Turkey
Abstract:A compact tunable 10 W picosecond source based on Yb-doped fiber amplification of gain switch laser diode has been demonstrated. A gain switch semiconductor laser diode was used 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 tunable pulses with high stability and excellent beam quality (M<sup>2</sup><1. 2) of 10 W average power 150 ps pulse duration at 1 MHz repetition rate were obtained. The central wavelength with the line width of 2. 5-3 nm was tunable from 1053 nm to 1073 nm.
Number of references:19
Main heading:Amplification
Controlled terms:Fiber amplifiers - Fiber lasers - Fibers - High power lasers - Semiconductor lasers - Ytterbium
Uncontrolled terms:Average power - Central wavelength - Double-clad - Gain switch - High stability - Large mode area - Main amplifiers - Multi-stage - Picosecond laser - Picoseconds - Pulse durations - Repetition rate - Seed source - Single mode - Yb-doped fibers
Classification code:547.2 Rare Earth Metals - 741.1 Light/Optics - 744 Lasers - 812 Ceramics, Refractories and Glass - 817 Plastics and Other Polymers: Products and Applications
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 131>
Accession number:20110313596136
Title:Scale transformation for detecting weak periodic signal of stochastic resonance
Authors:Wang, Guo-Fu (1); Zhang, Hai-Ru (1); Zhang, Fa-Quan (1); Ye, Jin-Cai (1); Wei, Li (1)
Author affiliation:(1) Department of Information and Communication, Gui Lin University of Electronic Technology, Guilin, China; (2) Xi'an Institute Optics and Precision Mechanics, CAS, Xi'an, China
Corresponding author:Wang, G.-F.(gfwang@guet.edu.cn)
Source title:Proceedings - 2010 International Conference on Intelligent Computing and Integrated Systems, ICISS2010
Abbreviated source title:Proc. - Int. Conf. Intelligent Comput. Integr. Syst., ICISS
Monograph title:Proceedings - 2010 International Conference on Intelligent Computing and Integrated Systems, ICISS2010
Issue date:2010
Publication year:2010
Pages:441-444
Article number:5656058
Language:English
ISBN-13:9781424468355
Document type:Conference article (CA)
Conference name:2010 IEEE International Conference on Intelligent Computing and Integrated Systems, ICISS2010
Conference date:October 22, 2010 - October 24, 2010
Conference location:Guilin, China
Conference code:83352
Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States
Abstract:Aiming at the issue of the traditional stochastic resonance only applicable to deal with low-frequency signals, a high-frequency weak signal detection method based on scale transformation is proposed in this paper. The high-frequency weak signal mixed with noise is scaled to a low frequency signal. The signal conforms to the adiabatic elimination theory. So when it acts on stochastic resonance systems, the stochastic resonance can arise. The original high frequency weak signal mixed with noise can be retrieved by scaled up by the same ratio. To deal with the unknown frequency mixed with noise, the high frequency mixed signal is scaled down continuously to achieve a suitable matching parameters for the stochastic system. According to the change of resonance spectral peak value, the unknown frequency can be found from the mixed signal. This method is effective for future application. © 2010 IEEE.
Number of references:8
Main heading:Signal detection
Controlled terms:Circuit resonance - Integrated control - Intelligent computing - Magnetic resonance - Stochastic systems
Uncontrolled terms:Adiabatic elimination - Future applications - High frequency - High frequency HF - Low-frequency signals - Matching parameters - Mixed signal - Periodic signal - Scale transformation - Spectral peak - Stochastic resonances - Weak signal detection - Weak signals
Classification code:701.2 Magnetism: Basic Concepts and Phenomena - 703.1.1 Electric Network Analysis - 716.1 Information Theory and Signal Processing - 723.4 Artificial Intelligence - 731.1 Control Systems
DOI:10.1109/ICISS.2010.5656058
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 132>
Accession number:20104813445440
Title:Incremental pairwise discriminant analysis based visual tracking
Authors:Wen, Jing (1); Gao, Xinbo (1); Li, Xuelong (2); Tao, Dacheng (3); Li, Jie (1)
Author affiliation:(1) School of Electronic Engineering, Xidian University, No.2 South Taibai Road, Xi'an 710071, Shaanxi, 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) School of Computer Engineering, Nanyang Technological University, Singapore
Corresponding author:Li, X.(xuelong_li@opt.ac.cn)
Source title:Neurocomputing
Abbreviated source title:Neurocomputing
Volume:74
Issue:1-3
Issue date:December 2010
Publication year:2010
Pages:428-438
Language:English
ISSN:09252312
CODEN:NRCGEO
Document type:Journal article (JA)
Publisher:Elsevier, P.O. Box 211, Amsterdam, 1000 AE, Netherlands
Abstract:The distinguishment between the object appearance and the background is the useful cues available for visual tracking, in which the discriminant analysis is widely applied. However, due to the diversity of the background observation, there are not adequate negative samples from the background, which usually lead the discriminant method to tracking failure. Thus, a natural solution is to construct an object-background pair, constrained by the spatial structure, which could not only reduce the neg-sample number, but also make full use of the background information surrounding the object. However, this idea is threatened by the variant of both the object appearance and the spatial-constrained background observation, especially when the background shifts as the moving of the object. Thus, an incremental pairwise discriminant subspace is constructed in this paper to delineate the variant of the distinguishment. In order to maintain the correct the ability of correctly describing the subspace, we enforce two novel constraints for the optimal adaptation: (1) pairwise data discriminant constraint and (2) subspace smoothness. The experimental results demonstrate that the proposed approach can alleviate adaptation drift and achieve better visual tracking results for a large variety of nonstationary scenes. © 2010 Elsevier B.V.
Number of references:52
Main heading:Discriminant analysis
Controlled terms:Image segmentation
Uncontrolled terms:Background information - Incremental learning - Log-Euclidean - Nonstationary - Object appearance - Optimal adaptation - Pairwise discriminant analysis - Sample number - Spatial structure - Tracking failure - Visual tracking
Classification code:741.1 Light/Optics - 922 Statistical Methods
DOI:10.1016/j.neucom.2010.07.014
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 133>
Accession number:20103213122687
Title:Theoretical analysis of the heat dissipation mechanism in high power photonic crystal fiber lasers
Authors:Li, Jianfeng (1); Duan, Kailiang (2); Dai, Zhiyong (1); Ou, Zhonghua (1); Liu, Yong (1); Liu, Yongzhi (1)
Author affiliation:(1) School of Optoelectronic Information, University of Electronic Science and Technology of China, Chengdu 610054, 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, J.(lijianfeng3000@sina.com.cn)
Source title:Separation and Purification Technology
Abbreviated source title:Sep. Purif. Technol.
Volume:74
Issue:1
Issue date:July 30, 2010
Publication year:2010
Pages:1243-1250
Language:English
ISSN:13835866
CODEN:SPUTFP
Document type:Journal article (JA)
Publisher:Elsevier, P.O. Box 211, Amsterdam, 1000 AE, Netherlands
Abstract:Starting from the special structure of photonic crystal fiber (PCF), the heat dissipation model of a PCF laser is constructed. Based on the heat dissipation model, the temperature distributions along the radial and axial directions of the PCF (DC-Yb-17040) for forward pump of 200W and two-end pump of 100W each side are calculated numerically by using the finite element method (FEM). The results show that the temperature distribution for two-end pump mode is more even than that for forward pump mode and the maximum temperature in the fiber decreases by 178.16 °. With the thermal power in fiber core being assumed to be fixed, the effects of the core radius, outer cladding radius, and air-clad width on the temperature distribution along the fiber are analyzed numerically. The results show that the changing of core radius only affects the temperature in core region slightly and the decreasing of air-clad width decreases the temperature in inner cladding and core regions effectively. Meanwhile, the temperature of the whole fiber can be decreased by increasing the cladding radius. © 2009 Elsevier GmbH. All rights reserved.
Number of references:13
Main heading:Photonic crystal fibers
Controlled terms:Crystal structure - Crystal whiskers - DC power transmission - Fiber lasers - Fibers - Finite element method - Glass industry - Nonlinear optics - Photonic crystals - Pumps - Temperature distribution - Thermoanalysis - Ytterbium
Uncontrolled terms:Air-clad - Axial direction - Core radius - Core region - End-pump - Heat dissipation - Heat dissipation mechanism - Heat equation - High power fiber lasers - High-power - In-core - In-fiber - Inner cladding - Maximum temperature - Special structure - Thermal power
Classification code:812.3 Glass - 817 Plastics and Other Polymers: Products and Applications - 819.4 Fiber Products - 912 Industrial Engineering and Management - 812 Ceramics, Refractories and Glass - 913 Production Planning and Control; Manufacturing - 933.1 Crystalline Solids - 933.1.1 Crystal Lattice - 951 Materials Science - 921.6 Numerical Methods - 801.4 Physical Chemistry - 547.2 Rare Earth Metals - 618.2 Pumps - 641.1 Thermodynamics - 706.1.1 Electric Power Transmission - 531.2 Metallography - 741.1.1 Nonlinear Optics - 741.3 Optical Devices and Systems - 744.4 Solid State Lasers - 801 Chemistry - 741.1.2 Fiber Optics
DOI:10.1016/j.ijleo.2009.01.015
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 134>
Accession number:20102413005451
Title:Multi-carbazole derivatives for two-photon absorption data storage: Synthesis, optical properties and theoretical calculation
Authors:Li, Lin (1); Yang, Jia Xiang (1); Wang, Cai Xia (1); Hu, Zhang Jun (1); Tian, Yu Peng (1); Li, Jing (3); Wang, Chuan Kui (3); Li, Ming (4); Cheng, Guang Hua (4); Tang, Huo Hong (5); Huang, Wen Hao (2); Tao, Xu Tang (2); Jiang, Min Hua (2)
Author affiliation:(1) Department of Chemistry, Anhui University, Hefei 230039, China; (2) State Key Laboratory of Crystal Materials, Institute of Crystal Materials, Shandong University, Jinan 250100, China; (3) Department of Physics, Shandong Normal University, Jinan 250014, China; (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; (5) Department of Precision Machinery and Precision Instrumentation, University of Science and Technology of China, Hefei 230026, China
Corresponding author:Jiang, M. H.(jxyang@ahu.edu.cn)
Source title:Science China Chemistry
Abbreviated source title:Sci. China Chem.
Volume:53
Issue:4
Issue date:April 2010
Publication year:2010
Pages:884-890
Language:English
ISSN:16747291
Document type:Journal article (JA)
Publisher:Science in China Press, 16 Donghuangchenggen North Street, Beijing, PR 100717, China
Abstract:Two novel quadrupolar organic compounds, 3-(4-((E)-2-(9-butyl-9H-carbazol- 6-yl) vinyl)styryl)-9-propyl-9H-carbazole (BCSPC) and 3-(3-(3-((1E)-2-(4-((E)-2- (3-(3,5-bis(9-butyl-9H-carbazol-6-yl)phenyl)-9-butyl-9H-carbazol-6-yl)vinyl) phenyl) vinyl)-9-butyl-9H-carbazol-6-yl)-5-(9-butyl-9H-carbazol-6-yl)phenyl)-9- butyl-9H-carbazole (BCPBC), with different conjugated arms, have been designed and synthesized. Their one-and two-photon absorption (TPA) and excited fluorescence properties have been experimentally investigated. The two-photon absorption cross-sections of two compounds were estimated by two-photon excited fluorescence technique using 200 fs, 76 MHz, Ti:sapphire laser, which are 22 and 154 GM for BCSPC and BCPBC, respectively. The optimal excitation wavelengths are 780 nm for both BCSPC and BCPBC. A data recording experiment proved the potential application of the materials. © Science China Press and Springer-Verlag Berlin Heidelberg 2010.
Number of references:39
Main heading:Optical data storage
Controlled terms:Absorption - Fluorescence - Light absorption - Luminescence of organic solids - Optical data processing - Optical properties - Photons - Two photon processes
Uncontrolled terms:Carbazol - Carbazole Derivatives - Data storage - Excited fluorescence - Optimal excitation - Potential applications - Theoretical calculation - Theoretical calculations - Ti: Sapphire laser - Two-photon absorptions - Two-photon excited fluorescence
Classification code:931.3 Atomic and Molecular Physics - 931.2 Physical Properties of Gases, Liquids and Solids - 804.1 Organic Compounds - 802.3 Chemical Operations - 744.1 Lasers, General - 741.3 Optical Devices and Systems - 741.1 Light/Optics - 723.2 Data Processing and Image Processing - 722.1 Data Storage, Equipment and Techniques
DOI:10.1007/s11426-010-0125-9
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 135>
Accession number:20104713410199
Title:A new continuous wave 2500W semiconductor laser vertical stack
Authors:Li, Xiaoning (1); Peng, Chenhui (1); Zhang, Yanxin (1); Wang, Jingwei (1); Xiong, Lgling (1); Zhang, Pu (1); Liu, Xingsheng (1)
Author affiliation:(1) 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, Shaanxi 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, No.28, Xianning West Road, Xi'an, Shaanxi 710049, China; (3) Xi'An Focuslight Technologies Co. LTD, No. 60 Xibu Road, Xi'an, Shaanxi 710119, China
Corresponding author:Li, X.(smto@opt.ac.cn)
Source title:Proceedings - 2010 11th International Conference on Electronic Packaging Technology and High Density Packaging, ICEPT-HDP 2010
Abbreviated source title:Proc. - Int. Conf. Electron. Packag. Technol. High Density Packag., ICEPT-HDP
Monograph title:Proceedings - 2010 11th International Conference on Electronic Packaging Technology and High Density Packaging, ICEPT-HDP 2010
Issue date:2010
Publication year:2010
Pages:1350-1354
Article number:5582810
Language:English
ISBN-13:9781424481422
Document type:Conference article (CA)
Conference name:2010 11th International Conference on Electronic Packaging Technology and High Density Packaging, ICEPT-HDP 2010
Conference date:August 16, 2010 - August 19, 2010
Conference location:Xi'an, China
Conference code:82121
Sponsor:Electron. Manuf. Packag. Technol. Soc. Chin. Inst. Electron.; IEEE Compon., Packag., Manuf. Technol. Soc. (IEEE-CPMT); Xidian University
Publisher:Association for Computing Machinery, 1515 Broadway, 17th Floor, New York, NY 10036-5701, United States
Abstract:With the increasing applications of high power semiconductor lasers in industrial, advanced manufacturing, military, aerospace, medical systems, display, entertainment. etc., semiconductor lasers with high power and high performances are required. The performance of semiconductor lasers is greatly affected by packaging structure, packaging process and beam shaping. In this work, a high power semiconductor laser vertical stack was successfully fabricated. A series of techniques such as spectrum control and beam control were used to achieve marrow spectrum and high beam quality. The performances of the semiconductor laser vertical stack were characterized. A high power of 2500 W, a narrow spectrum of 3.11 nm and an excellent rectangular beam shape were obtained. The lifetime of the vertical stack laser was tested as well. © 2010 IEEE.
Number of references:7
Main heading:Semiconductor lasers
Controlled terms:Chip scale packages - High power lasers - Lasers - Military applications - Packaging - Power electronics
Uncontrolled terms:Advanced manufacturing - Beam control - Beam-shaping - Continuous Wave - High beam quality - High power semiconductor laser - High-power - Medical systems - Packaging process - Packaging structure - Rectangular beams - Spectrum control - Vertical stacks
Classification code:404.1 Military Engineering - 694.1 Packaging, General - 714.2 Semiconductor Devices and Integrated Circuits - 715.2 Industrial Electronic Equipment - 744.1 Lasers, General
DOI:10.1109/ICEPT.2010.5582810
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 136>
Accession number:20101412822803
Title:Effects of gain saturation on terahertz radiation via optical difference frequency generation
Authors:Huang, Nan (1); Li, Xuefeng (2); Liu, Hongjun (1); Xia, Caipeng (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 Applied Mathematics and Physics, Xi'an Institute of Post and Telecom, Xi'an, 710121, China; (3) Graduate School, Chinese Academy of Sciences, China
Corresponding author:Huang, N.(huangnan@opt.ac.cn)
Source title:Optics Communications
Abbreviated source title:Opt Commun
Volume:283
Issue:11
Issue date:June 1, 2010
Publication year:2010
Pages:2442-2445
Language:English
ISSN:00304018
CODEN:OPCOB8
Document type:Journal article (JA)
Publisher:Elsevier, P.O. Box 211, Amsterdam, 1000 AE, Netherlands
Abstract:Numerical studies on stability of terahertz (THz) radiation generation based on difference frequency generation in nonlinear crystals are reported. When the gain saturation is achieved at a wavelength that corresponds to an optimal crystal length, the maximal output of THz radiation could be obtained. As a result of crystal absorption, the gain saturation region of THz radiation is unstable region for output. The stability of THz radiation is determined by the stability of pump in the stable region where behind of the gain saturation. © 2010 Elsevier B.V. All rights reserved.
Number of references:19
Main heading:Terahertz waves
Controlled terms:Convergence of numerical methods - Optical frequency conversion - Radiation effects - Stability
Uncontrolled terms:Crystal absorption - Crystal length - Difference-frequency generation - Gain saturation - Nonlinear crystals - Numerical studies - Optical difference frequency generation - Stable region - Terahertz - Terahertz radiation - THz radiation - Unstable regions
Classification code:951 Materials Science - 931 Classical Physics; Quantum Theory; Relativity - 921.6 Numerical Methods - 801 Chemistry - 961 Systems Science - 744 Lasers - 731.4 System Stability - 711 Electromagnetic Waves - 622.2 Radiation Effects - 741.1.1 Nonlinear Optics
DOI:10.1016/j.optcom.2010.01.072
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 137>
Accession number:20110213562261
Title:Electron spin dynamics in heavily Mn-doped (Ga,Mn)As
Authors:Zhu, Yonggang (1); Han, Lifen (1); Chen, Lin (1); Zhang, Xinhui (1); Zhao, Jianhua (1)
Author affiliation:(1) State Key Laboratory for Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences, P.O. Box 912, 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
Corresponding author:Zhu, Y.
Source title:Applied Physics Letters
Abbreviated source title:Appl Phys Lett
Volume:97
Issue:26
Issue date:December 27, 2010
Publication year:2010
Article number:262109
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:Electron spin relaxation and related mechanisms in heavily Mn-doped (Ga,Mn)As are studied by performing time-resolved magneto-optical Kerr effect measurements. At low temperature, s-d exchange scattering dominates electron spin relaxation, whereas the Bir-Aronov-Pikus mechanism and Mn impurity scattering play important roles at high temperature. The temperature-dependent spin relaxation time exhibits an anomaly around the Curie temperature (T <inf>c</inf>) that implies that thermal fluctuation is suppressed by short-range correlated spin fluctuation above T<inf>c</inf>. © 2010 American Institute of Physics.
Number of references:26
Main heading:Optical Kerr effect
Controlled terms:Electrons - Gallium - Kerr magnetooptical effect - Magnetic field effects - Manganese - Spin fluctuations
Uncontrolled terms:Electron spin dynamics - Electron-spin relaxation - High temperature - Low temperatures - Magneto-optical Kerr effects - Mn impurity - Mn-doped - Spin relaxation time - Temperature dependent - Thermal fluctuations - Time-resolved
Classification code:543.2 Manganese and Alloys - 549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals - 701.1 Electricity: Basic Concepts and Phenomena - 701.2 Magnetism: Basic Concepts and Phenomena - 741.1 Light/Optics - 932.1 High Energy Physics
DOI:10.1063/1.3531754
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 138>
Accession number:20104613380488
Title:Generation and amplification of high-energy nanosecond pulses in a compact all-fiber laser
Authors:Mao, Dong (1); Liu, Xueming (1); Wang, Leiran (1); Lu, Hua (1); Feng, Huan (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:18
Issue:22
Issue date:October 25, 2010
Publication year:2010
Pages:23024-23029
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 have experimentally investigated high-energy rectangular pulses delivering from an erbium-doped fiber laser operating in ultra-large net-negative-dispersion regime. The laser oscillator emits rectangular pulses with approximately Gaussian spectral profiles, adjustable nanoseconds durations, and multi-ten nanojoule energies. The outputted pulses can be further amplified to over 2 μJ without distortion by a two-stage erbium-doped fiber amplifier. Thus, rectangular pulses with controllable durations and energies can be achieved from the compact all-fiber fiber laser system. © 2010 Optical Society of America.
Number of references:24
Main heading:Fibers
Controlled terms:Erbium - Fiber amplifiers - High energy physics
Uncontrolled terms:All fiber - All-fiber lasers - Erbium doped fiber laser - Gaussians - High energy - Laser oscillators - Laser systems - Nanosecond pulse - Rectangular pulse - Spectral profile - Two stage
Classification code:547.2 Rare Earth Metals - 741.1.2 Fiber Optics - 812 Ceramics, Refractories and Glass - 817 Plastics and Other Polymers: Products and Applications - 932.1 High Energy Physics
DOI:10.1364/OE.18.023024
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 139>
Accession number:20103213134243
Title:The global image of the Moon obtained by the Chang'E-1: Data processing and lunar cartography
Authors:Li, Chun Lai (1); Liu, Jian Jun (1); Ren, Xin (1); Mou, Ling Li (1); Zou, Yong Liao (1); Zhang, Hong Bo (1); Lü, Chang (1); Liu, Jian Zhong (1); Zuo, Wei (1); Su, Yan (1); Wen, Wei Bin (1); Bian, Wei (1); Zhao, Bao Chang (2); Yang, Jian Feng (2); Zou, Xiao Duan (1); Wang, Min (1); Xu, Chun (1); Kong, De Qing (1); Wang, Xiao Qian (1); Wang, Fang (1); Geng, Liang (1); Zhang, Zhou Bin (1); Zheng, Lei (1); Zhu, Xin Ying (1); Li, Jun Duo (1); Ouyang, Zi Yuan (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:Li, C. L.(licl@nao.cas.cn)
Source title:Science China Earth Sciences
Abbreviated source title:Sci. China Earth Sci.
Volume:53
Issue:8
Issue date:2010
Publication year:2010
Pages:1091-1102
Language:English
ISSN:16747313
Document type:Journal article (JA)
Publisher:Science in China Press, 16 Donghuangchenggen North Street, Beijing, PR 100717, China
Abstract:The global lunar image of the first phase of Chinese Lunar Exploration Program is the first image that covered all over the surface of the Moon. It will serve as a critical foundation for succeeding exploration and scientific research. In this paper, the acquisition, characteristics, and data quality of Chang'E-1 CCD image data are described in detail. Also described are the methodology and procedure of data processing. According to rule of planetary cartography, the image data have been processed, geometrically corrected, and then mosaicked and merged in a scale of 1:2.5 million. The results of data processing and charting show that the image data of Chang'E-1 CCD and their geometric precision meet the demand of charting a map in the scale of 1:2.5 million. The relative geometric positioning precision of the global image is better than 240 m, and the absolute geometric positioning precision is slightly better than that of the ULCN2005 and Clementine lunar basemap (V2.0). The plane positioning precision is approximately 100-1500 m. This global image proves to be the best global image of the Moon so far in terms of space coverage, image quality, and positioning precision. © 2010 Science China Press and Springer-Verlag Berlin Heidelberg.
Number of references:23
Main heading:Data processing
Controlled terms:Geometry - Image quality - Lunar missions - Mapping - Maps
Uncontrolled terms:CCD images - Clementine - Data quality - Geometric precision - Image data - Image position - lunar CCD data processing - Lunar explorations - Positioning precision - Scientific researches - Space coverage
Classification code:902.1 Engineering Graphics - 741 Light, Optics and Optical Devices - 723.2 Data Processing and Image Processing - 921 Mathematics - 657.2 Extraterrestrial Physics and Stellar Phenomena - 655.1 Spacecraft, General - 405.3 Surveying - 656.1 Space Flight
DOI:10.1007/s11430-010-4016-x
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 140>
Accession number:20114714538274
Title:Approximate analytical optical transfer function for a wavefront-coded imaging system with two-dimensional rectangularly separable phase masks
Authors:Zhao, Hui (1); Li, Yingcai (1)
Author affiliation:(1) Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Science, Space Optics Lab, Number 17 Xinxi Road, Xi'an, Shannxi 710119, China
Corresponding author:Zhao, H.(zhaohui1981.zju@gmail.com)
Source title:Optical Engineering
Abbreviated source title:Opt Eng
Volume:49
Issue:9
Issue date:September 2010
Publication year:2010
Article number:093201
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:Wavefront coding can be used to extend the depth of field of incoherent imaging systems and is a powerful system-level technique. In order to assess the performance of a wavefront-coded imaging system, defocused optical transfer function (OTF) is the metric frequently used. Unfortunately, to the best of our knowledge, among all types of phase masks, it is usually difficult to obtain the analytical OTF except the cubic one. Although numerical computation seems good enough for performance evaluation, the approximate analytical OTF is still indispensable because it can reflect the relationship between mask parameters and system frequency response in a clearer way. Thus, a method is proposed to derive the approximate analytical OTF for two-dimensional rectangularly separable phase masks. The analytical results are well consistent with the direct numerical computations, but the proposed method can be accepted only from engineering point of view and needs rigorous proof in future. © 2010 SPIE.
Number of references:24
Main heading:Optical transfer function
Controlled terms:Frequency response - Imaging systems - Numerical methods - Two dimensional - Wavefronts
Uncontrolled terms:Analytical results - Depth of field - Incoherent imaging - Numerical computations - Performance evaluation - Phase masks - System levels - Wavefront coding
Classification code:731.1 Control Systems - 741 Light, Optics and Optical Devices - 741.1 Light/Optics - 746 Imaging Techniques - 902.1 Engineering Graphics - 921.6 Numerical Methods
DOI:10.1117/1.3485759
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 141>
Accession number:20105113507911
Title:In-depth study on propane-air combustion enhancement with dielectric barrier discharge
Authors:Tang, Jie (1); Zhao, Wei (1); Duan, Yixiang (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) Research Center of Analytical Instrumentation, Center of Analytical and Testing, Sichuan University, Chengdu, China
Corresponding author:Tang, J.
Source title:IEEE Transactions on Plasma Science
Abbreviated source title:IEEE Trans Plasma Sci
Volume:38
Issue:12 PART 1
Issue date:December 2010
Publication year:2010
Pages:3272-3281
Article number:5628277
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 plasmas generated from dielectric barrier discharges (DBDs) play an important role in hydrocarbon combustion reactions. In this paper, two different arrangements of coaxial cylindrical DBD reactors are designed to investigate the enhancement processes of plasma-assisted propane combustion through activating propane and air, respectively. Each reactor corresponds to one kind of activation method. With plasma being on and off, the physical appearances of the propane combustion flame are observed and compared, and the spatial distributions of the flame temperature are measured and comparatively investigated under each activation approach. In addition, some major components such as OH, CH, and $\hbox{C}-{2}$ in the combustion flame are identified using flame/plasma emission spectroscopy. The relationship of OH radical concentration with flame position is studied when plasma is on and off, and concentration profiles as well as densities of these major components in the main combustion zone are qualitatively measured and analyzed. Possible physical and chemical reaction mechanisms in the plasma and flame zones are discussed in detail under both activation ways. Experimental results suggest that propane combustion be enhanced with plasma applied on either propane or air stream. A temperature rise of about 30° C is achieved for the activation of propane, but about 50 °C is achieved for the activation of air with a 30-W plasma being applied. It denotes that some active species like O-atoms, N-atoms, and excited molecular oxygen and nitrogen produced by activating air components play a greater role than those smaller fragments and radicals generated by cracking propane in plasma-assisted combustion in our experimental conditions. © 2006 IEEE.
Number of references:27
Main heading:Combustion
Controlled terms:Chemical activation - Dielectric devices - Electric discharges - Electric reactors - Emission spectroscopy - Flow control - Free radicals - Hydrocarbons - Molecular oxygen - Nitrogen plasma - Plasma diagnostics - Propane
Uncontrolled terms:Activation method - Active species - Air combustion - Air components - Air streams - Combustion flames - Combustion zones - Concentration profiles - Dielectric barrier discharges - Excited molecular oxygen - Experimental conditions - Flame temperatures - Flame zones - Hydrocarbon combustion - In-depth study - Low temperature plasmas - OH radical - Propane combustion - Reaction mechanism - Spatial distribution - Temperature rise
Classification code:932.3 Plasma Physics - 804.2 Inorganic Compounds - 804 Chemical Products Generally - 803 Chemical Agents and Basic Industrial Chemicals - 801.4 Physical Chemistry - 801 Chemistry - 714 Electronic Components and Tubes - 704.1 Electric Components - 704 Electric Components and Equipment - 701.1 Electricity: Basic Concepts and Phenomena - 631.1 Fluid Flow, General - 522 Gas Fuels - 521.1 Fuel Combustion
DOI:10.1109/TPS.2010.2084597
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 142>
Accession number:20103713225867
Title:A Bezier curve based contour mapping algorithm for wireless sensor networks
Authors:An, Yuan (1); Ma, Caiwen (1); Sun, Limin (3); Zhang, Chenwei (4); Fang, Weiwei (5)
Author affiliation:(1) Optical Directional and Pointing Technique Research Center, Xi'an Institute of Optics Precision Mechanics of Chinese Acad. of Sci., Xi'an 710068, China; (2) Graduate School of Chinese Acad. of Sci., Beijing 100190, China; (3) Institute of Software of Chinese Acad. of Sci., Beijing 100190, China; (4) Beijing Institute of Technology, Beijing 100081, China; (5) Sino-German Joint Software Institute, Beihang University, Beijing 100083, China
Corresponding author:Sun, L.(sunlimin@is.iscas.ac.cn)
Source title:Gaojishu Tongxin/Chinese High Technology Letters
Abbreviated source title:Gaojishu Tongxin
Volume:20
Issue:8
Issue date:August 2010
Publication year:2010
Pages:792-797
Language:Chinese
ISSN:10020470
Document type:Journal article (JA)
Publisher:Inst. of Scientific and Technical Information of China, 15 Fu-Xing Lu - P.O. Box 3829, Beijing, 100038, China
Abstract:From the perspective of actual environmental monitoring demand in wireless sensor networks (WSNs), the paper puts forward an algorithm for contour mapping based on Bezier curves (CMBC) in these scenarios. The CMBC algorithm is based on the theory of Bezier curves and is widely used in computer graphics. It selects part of nodes to send contour mapping information to sink. In monitoring scenarios, the CMBC algorithm effectively solves the conflicts between demand of precision and transmission restraint, high energy consumption caused by nodes increasing. The comprehensive simulation results show that the CMBC algorithm achieves a high fidelity of contour mapping by using much fewer nodes as data sources than existing works, so the algorithm can save the limited energy of nodes and extend network life.
Number of references:10
Main heading:Wireless sensor networks
Controlled terms:Algorithms - Computer graphics - Computer simulation - Conformal mapping - Energy conservation - Energy utilization - Environmental engineering - Sensor networks
Uncontrolled terms:Bezier curve - Contour mapping - Energy saving - Environmental Monitoring - Wireless sensor
Classification code:454 Environmental Engineering - 525.2 Energy Conservation - 525.3 Energy Utilization - 723.5 Computer Applications - 732 Control Devices - 921 Mathematics
DOI:10.3772/j.issn.1002-0470.2010.08.004
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 143>
Accession number:20103213121714
Title:Theoretical analysis of the heat dissipation mechanism in high power photonic crystal fiber lasers
Authors:Li, Jianfeng (1); Duan, Kailiang (2); Dai, Zhiyong (1); Ou, Zhonghua (1); Liu, Yong (1); Liu, Yongzhi (1)
Author affiliation:(1) School of Optoelectronic Information, University of Electronic Science and Technology of China, Chengdu 610054, 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, J.(lijianfeng3000@sina.com.cn)
Source title:Optik
Abbreviated source title:Optik
Volume:121
Issue:13
Issue date:2010
Publication year:2010
Pages:1243-1250
Language:English
ISSN:00304026
Document type:Journal article (JA)
Publisher:Urban und Fischer Verlag Jena, P.O. Box 100537, Jena, 07705, Germany
Abstract:Starting from the special structure of photonic crystal fiber (PCF), the heat dissipation model of a PCF laser is constructed. Based on the heat dissipation model, the temperature distributions along the radial and axial directions of the PCF (DC-Yb-17040) for forward pump of 200W and two-end pump of 100W each side are calculated numerically by using the finite element method (FEM). The results show that the temperature distribution for two-end pump mode is more even than that for forward pump mode and the maximum temperature in the fiber decreases by 178.16 °C. With the thermal power in fiber core being assumed to be fixed, the effects of the core radius, outer cladding radius, and air-clad width on the temperature distribution along the fiber are analyzed numerically. The results show that the changing of core radius only affects the temperature in core region slightly and the decreasing of air-clad width decreases the temperature in inner cladding and core regions effectively. Meanwhile, the temperature of the whole fiber can be decreased by increasing the cladding radius. © 2009 Elsevier GmbH. All rights reserved.
Number of references:13
Main heading:Photonic crystal fibers
Controlled terms:Crystal structure - Crystal whiskers - DC power transmission - Fiber lasers - Fibers - Finite element method - Glass industry - Nonlinear optics - Photonic crystals - Pumps - Temperature distribution - Thermoanalysis - Ytterbium
Uncontrolled terms:Air-clad - Axial direction - Core radius - Core region - End-pump - Heat dissipation - Heat dissipation mechanism - Heat equation - High power fiber lasers - High-power - In-core - In-fiber - Inner cladding - Maximum temperature - Special structure - Thermal power
Classification code:812.3 Glass - 817 Plastics and Other Polymers: Products and Applications - 819.4 Fiber Products - 912 Industrial Engineering and Management - 812 Ceramics, Refractories and Glass - 913 Production Planning and Control; Manufacturing - 933.1 Crystalline Solids - 933.1.1 Crystal Lattice - 951 Materials Science - 921.6 Numerical Methods - 801.4 Physical Chemistry - 547.2 Rare Earth Metals - 618.2 Pumps - 641.1 Thermodynamics - 706.1.1 Electric Power Transmission - 531.2 Metallography - 741.1.1 Nonlinear Optics - 741.3 Optical Devices and Systems - 744.4 Solid State Lasers - 801 Chemistry - 741.1.2 Fiber Optics
DOI:10.1016/j.ijleo.2009.01.015
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 144>
Accession number:20104813423707
Title:Testing & simulation of disturbance torque caused by cables in acquisition, tracking & pointing system
Authors:Xu, Feng (1); Li, Zhi-Guo (2)
Author affiliation:(1) Institute of Modern Technologies, Key Lab. of Modern Optical Technologies of Jiang Su Province, Soochow University, No. 1, Shizi Street, Suzhou City,Jiangsu, China; (2) Xi'an Institute of Optics and Precision Mechanics of CAS, New Industrial Park, Xi'an Hi-Tech. Industrial Development Zone, NO.17 Xinxi Road, Xi'an,Shaanxi, China
Corresponding author:Xu, F.(xf750617@suda.edu.cn)
Source title:2010 IEEE International Conference on Mechatronics and Automation, ICMA 2010
Abbreviated source title:IEEE Int. Conf. Mechatronics Autom., ICMA
Monograph title:2010 IEEE International Conference on Mechatronics and Automation, ICMA 2010
Issue date:2010
Publication year:2010
Pages:49-52
Article number:5588754
Language:English
ISBN-13:9781424451418
Document type:Conference article (CA)
Conference name:2010 IEEE International Conference on Mechatronics and Automation, ICMA 2010
Conference date:August 4, 2010 - August 7, 2010
Conference location:Xi'an, China
Conference code:82380
Sponsor:IEEE Robotics and Automaton Society; Xidian University; University of Alberta; Kagawa University
Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States
Abstract:In an acquisition, tracking & pointing system (ATPS), there are many cables as usual. The torque caused by cables (TC) is so powerful that it may influent on the control accuracy of the system. In this paper, a way of how to test TC was put forward. And the model of TC was made via the experiment results. It includes two parts. One is elastic force, the other is damp. Next, the influence on ATPS was simulated. The simulation results show that the influence of TC is very limit on closed loop system and is considerable on open loop system. So it should be thought much in the process of design. © 2010 IEEE.
Number of references:4
Main heading:Torque
Controlled terms:Cables - Closed loop systems - Mechatronics - Wire
Uncontrolled terms:ATPS - Control accuracy - Disturbance torque - Elastic force - Open loop systems - Pointing systems - Simulation result - TC
Classification code:421 Strength of Building Materials; Mechanical Properties - 535 Rolling, Forging and Forming - 535.2 Metal Forming - 608 Mechanical Engineering, General - 961 Systems Science
DOI:10.1109/ICMA.2010.5588754
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 145>
Accession number:20104113283127
Title:Design of instantaneous measurement system based on optical transition radiation
Authors:Jiang, Xiaoguo (1); Dong, Xiaona (2); Wang, Yuan (1); Chen, Liangyi (2); Zhang, Kaizhi (1); Shi, Jinshui (1); Deng, Jianjun (1)
Author affiliation:(1) Institute of Fluid Physics, CAEP, P. O. Box 919-106, Mianyang 621900, China; (2) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710068, China
Corresponding author:Jiang, X.(j_xg_caep@sina.com)
Source title:Qiangjiguang Yu Lizishu/High Power Laser and Particle Beams
Abbreviated source title:Qiangjiguang Yu Lizishu
Volume:22
Issue:9
Issue date:September 2010
Publication year:2010
Pages:2147-2150
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:An optical transition radiation(OTR)-based measurement system has been designed to obtain the instantaneous beam divergence and spot size of Dragon-I linear induction accelerator(LIA) simultaneously. It can achieve instantaneous mea-surement within about 10 ns, and provides an on-line instantaneous beam diagnostic method for a 18.5 MeV, 2 kA, 90 ns electron pulse. The typical results of beam spot and beam divergence are about 9 mm and 10.5 mrad. This system lays a foundation for the study of time-resolved beam diagnostic technique which will be adopted in Dragon-I LIA.
Number of references:7
Main heading:Computer graphics
Controlled terms:High energy physics - Measurements - Optical transitions
Uncontrolled terms:Beam diagnosis - Beam diagnostics - Beam divergence - Beam spot - Dragon-I linear induction accelerator - Electron pulse - Instantaneous measurement - Linear induction accelerator - Measurement system - Optical transition radiation - Spot sizes - Time-resolved
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 - 932.1 High Energy Physics - 723.5 Computer Applications - 717 Optical Communication - 741 Light, Optics and Optical Devices
DOI:10.3788/HPLPB20102209.2147
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 146>
Accession number:20102312987657
Title:Full-wave analysis and rigorous design of new annular branch hybrid
Authors:Wang, Sheng-Yuan (1); Li, Yu-Shan (3); Cao, Jian-Zhong (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 100039, China; (3) Institute of Electronic Engineering, Xidian University, Xi'an 710071, China
Corresponding author:Wang, S.-Y.(winsymbol@126.com)
Source title:Jilin Daxue Xuebao (Gongxueban)/Journal of Jilin University (Engineering and Technology Edition)
Abbreviated source title:Jilin Daxue Xuebao (Gongxueban)
Volume:40
Issue:3
Issue date:May 2010
Publication year:2010
Pages:821-825
Language:Chinese
ISSN:16715497
CODEN:JDXGAH
Document type:Journal article (JA)
Publisher:Editorial Board of Jilin University, 5988 Renmin Street, Changchun, 130022, China
Abstract:A new design method is proposed and used to analyze the characteristics of micro-strip discontinuities of a new type of annular branch hybrid. First, the even-and odd-mode theory is employed to analyze the ideally simplified circuit model and to obtain the preliminary circuit dimensions. Then, based on these dimensions, the Method of Moments (MoM) to the electric field integral equation together with the full space-domain Green's function is used to find the currents in the micro-strip circuits and the junction scattering parameters. All the physical effects are taken into consideration in this proposed approach. Numerical and experimental results of the new type of annular branch hybrid demonstrated the accuracy and efficiency of the proposed method.
Number of references:10
Main heading:Electric network analysis
Controlled terms:Data processing - Electric fields - Green's function - Method of moments - Scattering parameters
Uncontrolled terms:Annular branch hybrid - Circuit dimensions - Circuit models - Electric field integral equation - Even- and odd-mode - Full wave analysis - Information processing technology - Microstripes - New design - Physical effects
Classification code:701.1 Electricity: Basic Concepts and Phenomena - 703.1 Electric Networks - 703.1.1 Electric Network Analysis - 723.2 Data Processing and Image Processing - 921 Mathematics
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 147>
Accession number:20110413608170
Title:Identifying camera and processing from cropped JPEG photos via tensor analysis
Authors:Li, Weihai (1); Yu, Nenghai (1); Yuan, Yuan (2)
Author affiliation:(1) School of Information Science and Technology, University of Science and Technology of China, Hefei 230027, Anhui, 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, Shaanxi, China
Corresponding author:Li, W.(whli@ustc.edu.cn)
Source title:Conference Proceedings - IEEE International Conference on Systems, Man and Cybernetics
Abbreviated source title:Conf. Proc. IEEE Int. Conf. Syst. Man Cybern.
Monograph title:2010 IEEE International Conference on Systems, Man and Cybernetics, SMC 2010
Issue date:2010
Publication year:2010
Pages:3889-3895
Article number:5641757
Language:English
ISSN:1062922X
CODEN:PICYE3
ISBN-13:9781424465880
Document type:Conference article (CA)
Conference name:2010 IEEE International Conference on Systems, Man and Cybernetics, SMC 2010
Conference date:October 10, 2010 - October 13, 2010
Conference location:Istanbul, Turkey
Conference code:83423
Publisher:Institute of Electrical and Electronics Engineers Inc., 3 Park Avenue, 17th Floor, New York, NY 10016-5997, United States
Abstract:Digital image and video forensics is to detect the authenticity of digital images/videos. So far, existing algorithms are designed by exploring one or several special features, which usually result in limited performance and applicability. With the perspective of entire procedure including image acquisition and image processing, a theory of general blind image forensics is proposed in this paper. Then a new blind image forensic method is designed based on this theory to identify camera source and processing history of cropped compressed digital images. In this method, tensor decomposition analysis is applied to extract features of nonlinear operations, which come from both algorithms embedded within camera and operations done by post-software. Then, the Support Vector Machine is utilized to classify whether the target image is captured by the claimed camera and underwent the declared processing history. Experimental results show that this method has high detection accuracy, which demonstrated that our theory is correct. ©2010 IEEE.
Number of references:21
Main heading:Image processing
Controlled terms:Algorithms - Cameras - Computer crime - Computer graphics - Cybernetics - Embedded software - Feature extraction - Tensors
Uncontrolled terms:Detection accuracy - Digital image - Image forensics - Nonlinear operation - Target images - Tensor analysis - Tensor decomposition
Classification code:716 Telecommunication; Radar, Radio and Television - 723 Computer Software, Data Handling and Applications - 741 Light, Optics and Optical Devices - 742.2 Photographic Equipment - 921.1 Algebra - 921.4 Combinatorial Mathematics, Includes Graph Theory, Set Theory
DOI:10.1109/ICSMC.2010.5641757
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 148>
Accession number:20103713230143
Title:Detection efficiency for an ultraviolet photon counting imaging system based on the Ge induction readout
Authors:Zhang, Xinghua (1); Zhao, Baosheng (2); Liu, Yong'An (2); Zhao, Feifei (2); Yan, Qiurong (2)
Author affiliation:(1) School of Material Science and Engineering, Hebei University of Technology, Tianjin 300130, 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:Zhang, X.(xinghua146@yahoo.com.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:622
Issue:1
Issue date:October 1, 2010
Publication year:2010
Pages:311-315
Language:English
ISSN:01689002
CODEN:NIMAER
Document type:Journal article (JA)
Publisher:Elsevier, P.O. Box 211, Amsterdam, 1000 AE, Netherlands
Abstract:The detection efficiency, assumed proportional to the count rate, of an ultraviolet photon counting imaging system based on the Ge induction readout is studied. For the Ge induction readout, the system count rate with different Ge layer resistances, Ge layer thicknesses and ceramic thicknesses are tested under different light intensities. The test results show that the system count rate with a high resistance in the Ge layer is lower than that with a low resistance in the Ge layer; further, the imaging area decreases as the Ge layer resistance increases under high photon flux. Moreover the system count rate with a thick Ge layer is lower than that with a thin Ge layer. In addition, the system count rate with 2-mm ceramic is higher than that with 1.5- and 3-mm ceramic. The above observation should be considered when designing an ultraviolet photon counting imaging detector based on the Ge induction readout. © 2010 Elsevier B.V.
Number of references:14
Main heading:Germanium
Controlled terms:Ceramic materials - Detectors - Imaging systems - Optical cables - Photons
Uncontrolled terms:Count rates - Detection efficiency - High resistance - Imaging detector - Induction readout - Layer resistance - Light intensity - Low resistance - Photon counting imaging - Photon flux - Test results - Ultraviolet photon - Wedge and strip anode
Classification code:741 Light, Optics and Optical Devices - 746 Imaging Techniques - 804 Chemical Products Generally - 812.1 Ceramics - 914 Safety Engineering
DOI:10.1016/j.nima.2010.03.140
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 149>
Accession number:20103313154123
Title:A first-principles study of the size-dependent electronic properties of SiC nanotubes
Authors:Zhang, Weihu (1); Zhang, Fuchun (3); Zhang, Zhiyong (4); Lu, Shuyuan (5); Yang, Yanning (3)
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 100049, China; (3) College of Physics and Electronic Information, Yan'An University, Yan'an 716000, China; (4) College of Information Science and Technology, Northwest University, Xi'an 710127, China; (5) Department of Telecommunications, Xi'An Institute of Posts and Telecommunications, Xi'an 710121, China
Corresponding author:Zhang, Z.(zhangzy@nwu.edu.cn)
Source title:Science China: Physics, Mechanics and Astronomy
Abbreviated source title:SCI. CHINA Phys. Mech. Astron.
Volume:53
Issue:7
Issue date:July 2010
Publication year:2010
Pages:1333-1338
Language:English
ISSN:16747348
Document type:Journal article (JA)
Publisher:Science in China Press, 16 Donghuangchenggen North Street, Beijing, PR 100717, China
Abstract:We investigate the structural and electronic properties of SiC nanotubes (NTs) with hexagonal cross sections by a first-principles calculation using plane-wave ultra-soft pseudo-potential technology based on the density-functional theory. Our results reveal that surface-layer C and Si atoms relax significantly upon decreasing the tube-wall thickness because of surface-size and quantum-size effects. We also find that all relaxed SiC NTs stay stably on the nanoscale because of an admixture of sp<sup>2</sup> and sp<sup>3</sup> hybridization between C and Si atoms and a strong covalent, and that the band gap tends to decrease with increasing tube-wall thickness. Our calculations further indicate that both C and Si atoms on the inner and outer surface of SiC NTs contribute to defect states at the top of the valence band and at the bottom of the conduction band. These results provide reference information for a thorough understanding of the properties of SiC nanostructures and also enable more precise monitoring and control of the growth of SiC nanostructures. © 2010 Science China Press and Springer-Verlag Berlin Heidelberg.
Number of references:22
Main heading:Silicon carbide
Controlled terms:Atoms - Density functional theory - Electron mobility - Electronic properties - Nanotubes - Silicon - Size determination - Walls (structural partitions)
Uncontrolled terms:Band gaps - Defect state - density function theory - First-principles calculation - First-principles study - Hexagonal cross-sections - Nano scale - Outer surface - Plane wave - Potential technologies - Precise monitoring - Quantum size effects - Si atoms - SiC nanotubes - Wall thickness
Classification code:931.2 Physical Properties of Gases, Liquids and Solids - 931.3 Atomic and Molecular Physics - 931.4 Quantum Theory; Quantum Mechanics - 922.1 Probability Theory - 933 Solid State Physics - 933.3 Electronic Structure of Solids - 943.3 Special Purpose Instruments - 933.1 Crystalline Solids - 812.2 Refractories - 408.2 Structural Members and Shapes - 549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals - 701.1 Electricity: Basic Concepts and Phenomena - 402 Buildings and Towers - 712.1 Semiconducting Materials - 761 Nanotechnology - 804.2 Inorganic Compounds - 712.1.1 Single Element Semiconducting Materials
DOI:10.1007/s11433-010-4029-7
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 150>
Accession number:20102112958578
Title:Design of new-style unobscured three-mirror optical system
Authors:Guo, Yongxiang (1); Li, Yingcai (1); Lü, Baobin (1); Bai, Yu (1); Sun, Qibing (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:Guo, Y.(gyxllr605@163.com)
Source title:Guangxue Xuebao/Acta Optica Sinica
Abbreviated source title:Guangxue Xuebao
Volume:30
Issue:4
Issue date:April 2010
Publication year:2010
Pages:1144-1147
Language:Chinese
ISSN:02532239
CODEN:GUXUDC
Document type:Journal article (JA)
Publisher:Chinese Optical Society, P.O. Box 80, Xi'an, 710068, China
Abstract:One new-style unobscured three-mirror optical system was designed, which was based on the Gregorian system. The design step of this special three-mirror optical system was analyzed, and then a system with effective focal length of 900 mm, field of view of 0.8°×0.8° and F-number of 9 was designed. Its total length is 330 mm. The image qualities of the example are near diffraction limit. The system has advantages of shorter physical size and better ability in restraining stray lights. Compare with other three-mirror optical systems, the most prominent advantage of this special three-mirror optical system is that it just uses two aspheric mirrors and one spherical, thus reducing the cost and the manufacturing difficulties a lot.
Number of references:15
Main heading:Optical systems
Controlled terms:Cost reduction - Image quality - Mirrors - Optical design
Uncontrolled terms:Aspheric mirrors - Design steps - Diffraction limits - Effective focal lengths - Field of views - Folded-axis three-mirror - Off-axis - Off-axis three-mirror - Reflective systems - Total length
Classification code:741 Light, Optics and Optical Devices - 741.1 Light/Optics - 741.3 Optical Devices and Systems - 911.2 Industrial Economics - 912.2 Management
DOI:10.3788/AOS20103004.1144
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 151>
Accession number:20100212634113
Title:Yb<sup>3+</sup>-doped 200 μm diameter core, gain guided index-antiguided fiber
Authors:Lu, M. (1); Li, W. (1); Zou, K. (1); Dai, S. (1); Wei, W. (1); Peng, B. (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; (2) Optical Science and Engineering Department, Fudan University, Shanghai 200433, China
Corresponding author:Peng, B.(bpeng@opt.ac.cn)
Source title:Applied Physics B: Lasers and Optics
Abbreviated source title:Appl Phys B
Volume:98
Issue:2-3
Issue date:February 2010
Publication year:2010
Pages:301-304
Language:English
ISSN:09462171
CODEN:APBOEM
Document type:Journal article (JA)
Publisher:Springer Verlag, Tiergartenstrasse 17, Heidelberg, D-69121, Germany
Abstract:The lasing in an end-pumped gain guided index-antiguided (GG-IAG) Yb <sup>3+</sup>-doped silicate glass fiber with a 200 μm diameter core is demonstrated. Laser beams with similar beam propagation factors M <sup>2</sup> and mode field diameters W <inf>0</inf> (>160 μm) were observed at the output end of the GG-IAG fibers under different pump powers, which indicated that single mode behavior and excellent beam quality were achieved during propagation. Furthermore, the laser amplifier characteristics in the present Yb<sup>3+</sup>-doped GG-IAG fiber were also evaluated. © 2009 Springer-Verlag.
Number of references:8
Main heading:Fibers
Controlled terms:Glass fibers - Silicates - Ytterbium
Uncontrolled terms:Beam propagation factor - End-pumped - Gain guided - Laser amplifiers - Mode field diameter - Pump power - Silicate glass fibers - Single mode
Classification code:819.2 Synthetic Fibers - 817 Plastics and Other Polymers: Products and Applications - 812.3 Glass - 812 Ceramics, Refractories and Glass - 819.4 Fiber Products - 741.1.2 Fiber Optics - 482.2 Minerals - 414 Masonry Materials - 413 Insulating Materials - 547.2 Rare Earth Metals
DOI:10.1007/s00340-009-3737-z
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 152>
Accession number:20104813423652
Title:Image denoising via doubly Wiener filtering with adaptive directional windows and mean shift algorithm in wavelet domain
Authors:Li, Xiang (1); Su, Xiuqin (1); Ji, Lei (1)
Author affiliation:(1) Key Laboratory of Ultrafast Photoelectric Diagnostics Technology, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Science, Xi'an, Shaanxi, 710119, China; (2) Graduate College of Chinese Academy of Science, Beijing 100039, China
Corresponding author:Li, X.(xqsu@opt.ac.cn)
Source title:2010 IEEE International Conference on Mechatronics and Automation, ICMA 2010
Abbreviated source title:IEEE Int. Conf. Mechatronics Autom., ICMA
Monograph title:2010 IEEE International Conference on Mechatronics and Automation, ICMA 2010
Issue date:2010
Publication year:2010
Pages:114-118
Article number:5588478
Language:English
ISBN-13:9781424451418
Document type:Conference article (CA)
Conference name:2010 IEEE International Conference on Mechatronics and Automation, ICMA 2010
Conference date:August 4, 2010 - August 7, 2010
Conference location:Xi'an, China
Conference code:82380
Sponsor:IEEE Robotics and Automaton Society; Xidian University; University of Alberta; Kagawa University
Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States
Abstract:An image is often corrupted by noise in its acquisition or transmission. The goal of denoising is to remove the noise while retaining as much as possible the important signal features. In this paper, we propose a doubly local Wiener filtering method using adaptive directional windows and Mean Shift algorithm, in which the Mean Shift algorithm is first used to naturally segment the image into regions of similar content, and then the adaptive directional windows which can change shape according to the different regions, are used to estimate the signal variances of noisy wavelet, finally the doubly local Wiener filtering is used to denoise the observed image. Simulations demonstrate this method substantially outperforms the original algorithm. © 2010 IEEE.
Number of references:14
Main heading:Image segmentation
Controlled terms:Adaptive filtering - Algorithms - Mechatronics - Noise pollution control - Vector quantization
Uncontrolled terms:De-Noise - De-noising - Image de-noising - Mean shift algorithm - Original algorithms - Signal features - Signal variance - Wavelet domain - Wiener filtering
Classification code:741.1 Light/Optics - 741 Light, Optics and Optical Devices - 731.1 Control Systems - 921 Mathematics - 723.2 Data Processing and Image Processing - 608 Mechanical Engineering, General - 461.7 Health Care - 723 Computer Software, Data Handling and Applications
DOI:10.1109/ICMA.2010.5588478
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 153>
Accession number:20104713405302
Title:The near- and mid-infrared emission properties of Tm<sup>3+</sup>-doped GeGaS-CsI chalcogenide glasses
Authors:Shixun, Dai (1); Bo, Peng (2); Pengjun, Zhang (1); Tiefeng, Xu (1); Wang, Xunsi (1); Qiuhua, Nie (1); Xianghua, Zhang (1)
Author affiliation:(1) College of Information Science and Engineering, Ningbo University, Zhejiang Ningbo 315211, China; (2) Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Science, Shanxi Xian 710119, China; (3) Laboratoire des Verres et Céramiques, Université de RennesI, Rennes, 35042, France
Corresponding author:Shixun, D.(daishixun@nbu.edu.cn)
Source title:Journal of Non-Crystalline Solids
Abbreviated source title:J Non Cryst Solids
Volume:356
Issue:44-49
Issue date:October 1, 2010
Publication year:2010
Pages:2424-2428
Language:English
ISSN:00223093
CODEN:JNCSBJ
Document type:Conference article (CA)
Publisher:Elsevier, P.O. Box 211, Amsterdam, 1000 AE, Netherlands
Abstract:Serials of chalcogenide glasses based on composition of 72GeS <inf>2</inf>-18Ga<inf>2</inf>S<inf>3</inf>-10CsI (in mol%) and doped with high Tm<sup>3+</sup> content (up to 10,000 ppm) were prepared, and their luminescence properties were investigated under excitation with 800 nm laser. The influences of doping concentration on Judd-Ofelt intensity parameter Ω<inf>i</inf>, spontaneous transition probability A, fluorescence branching ratio β, and radiative lifetime τ<inf>rad</inf> of Tm<sup>3+</sup> in the samples were studied. Four infrared emission bands observed were centered at 1.48, 1.8, 2.3, and 3.8 μm, corresponding to optical transitions <sup>3</sup>H<inf>4</inf> → <sup>3</sup>F<inf>4</inf>, <sup>3</sup>F<inf>4</inf> → <sup>3</sup>H<inf>6</inf>, <sup>3</sup>H<inf>4</inf> → <sup>3</sup>H <inf>5</inf> and <sup>3</sup>H<inf>5</inf> → <sup>3</sup>F<inf>4</inf>, respectively. For 1.0 wt.% Tm<sup>3+</sup>: doped sample, no concentration quenching was observed and its emission cross-sections at 2.3 and 3.8 μm calculated by using Fu¨chtbauer-Ladenburg equation were 6.85 × 10 <sup>-21</sup> and 7.66 × 10<sup>-21</sup> cm <sup>-2</sup>, respectively. © 2010 Elsevier B.V. All rights reserved.
Number of references:23
Main heading:Doping (additives)
Controlled terms:Glass - Infrared devices - Laser excitation - Luminescence - Metal ions - Rare earths - Thulium
Uncontrolled terms:Chalcogenide glass - Doped sample - Doping concentration - Emission cross section - Fluorescence branching ratio - Infrared emissions - Judd-Ofelt intensity parameters - Luminescence properties - Mid-infrared emission - Midinfrared - NO concentration - Radiative lifetime - Rare earth ions - Spontaneous transition probabilities - Thulium ions
Classification code:801.4 Physical Chemistry - 801 Chemistry - 741.3 Optical Devices and Systems - 812.3 Glass - 741.1 Light/Optics - 533 Ore Treatment and Metal Refining - 481.2 Geochemistry - 547.2 Rare Earth Metals
DOI:10.1016/j.jnoncrysol.2010.03.020
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 154>
Accession number:20102012937743
Title:Continuous-wave passively mode-locked Nd:YVO<inf>4</inf>/KTP green laser with a semiconductor saturable absorber mirror
Authors:Wang, X. (1); Li, M. (2)
Author affiliation:(1) Shandong Provincial Hospital, Shandong University, Shangdong, 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, X.(antwxm@163.com)
Source title:Laser Physics
Abbreviated source title:Laser Phys.
Volume:20
Issue:4
Issue date:April 2010
Publication year:2010
Pages:733-736
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 diode-pumped passively mode-locked low-doped Nd:YVO<inf>4</inf> green laser with a semiconductor saturable absorber mirror (SESAM) and an intracavity frequency-doubling KTP crystal is demonstrated. In order to efficiently release the thermal effect, a low-doped Nd:YVO<inf>4</inf> crystal with the Nd <sup>3+</sup> concentration of 0.1 at % is employed as the gain medium. The maximum average output power of 3.1 W at 532 nm with a repetition rate of 102 MHz is obtained under the pump power of 25 W, corresponding to an optical conversion efficiency of 12.4%. The 532 nm mode locked pulse width is estimated to be approximately 6.1 ps. © 2010 Pleiades Publishing, Ltd.
Number of references:17
Main heading:Mirrors
Controlled terms:Conversion efficiency - Fiber lasers - Neodymium - Semiconductor lasers
Uncontrolled terms:Concentration of - Continuous waves - Diode-pumped - Gain medium - Green laser - Intra cavity frequency doubling - KTP crystals - Mode-locked pulse - Optical conversion efficiency - Output power - Passively mode-locked - Pump power - Repetition rate - Semiconductor saturable absorber mirrors
Classification code:744.4 Solid State Lasers - 741.3 Optical Devices and Systems - 741.1.2 Fiber Optics - 744.4.1 Semiconductor Lasers - 714.2 Semiconductor Devices and Integrated Circuits - 547.2 Rare Earth Metals - 525.5 Energy Conversion Issues - 712.1 Semiconducting Materials
DOI:10.1134/S1054660X10070297
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 155>
Accession number:20110813690182
Title:Real-time compression system research based on DMD hadamard transform spectrometer
Authors:Fan, Xianyun (1); Hu, Bingliang (2); Li, Zitian (2); Chen, Xiaolai (2); Han, Yajuan (1)
Author affiliation:(1) Xi'An Institute of Optics and Precision Mechanics, CAS, Xi'an 710119, China; (2) Graduate School of Chinese Academy of Sciences, Beijing 100039, China
Corresponding author:Hu, B.(fanfan@opt.ac.cn)
Source title:Procedia Engineering
Abbreviated source title:Procedia Eng.
Volume:7
Monograph title:2010 Symposium on Security Detection and Information Processing
Issue date:2010
Publication year:2010
Pages:297-303
Language:English
E-ISSN:18777058
Document type:Conference article (CA)
Conference name:2010 Symposium on Security Detection and Information Processing
Conference code:83467
Publisher:Elsevier Ltd, Langford Lane, Kidlington, Oxford, OX5 1GB, United Kingdom
Abstract:We propose a new lossy compression approach for hyperspectral images which comes from hadamard transform (HT) spectral imager for space-based surveillance that uses the Digital Micro-mirror Device (DMD) as the programmable mask other than the conventional mechanical mask. This paper firstly introduces that the DMD Hadamard spectrometer described in this paper is good at obtaining multi-channel high-energy high-SNR spectral data, which is superior to traditional ones. And then,based on the hardware platform composed of Xilinx FPGA and ADV212 (a codec chip for special JPEG2000), the sampled image data was then compressed with high SNR,high-resolution compression ratio. Last, we show the experimental results which demonstrate that the PSNR is up to 47.3dB and make no significant distortion for vision. Obviously, this approach takes distinguished advantages on real-time ability, image distortion and the practical value. The design can be utilized in national defense, earth resource survey aerospace, environmental disaster monitoring and other fields. © 2010 Published by Elsevier Ltd.
Number of references:12
Main heading:Data compression
Controlled terms:Compression ratio (machinery) - Data compression ratio - Data processing - Digital image storage - Field programmable gate arrays (FPGA) - Image compression - Security of data - Spectrometers - Spectrometry
Uncontrolled terms:ADV212 - Compression ratios - Digital micro-mirror device - DMD - Environmental disasters - Hadamard - Hadamard transform spectrometers - Hadamard transforms - Hardware platform - High energy - High resolution - High SNR - Hyper-spectral images - Image data - Image distortions - JPEG 2000 - Lossy compressions - Mechanical masks - Multi-channel - National defense - Real-time compression - Space-based - Spectral data - Xilinx FPGA
Classification code:618.1 Compressors - 721.3 Computer Circuits - 722.4 Digital Computers and Systems - 723.2 Data Processing and Image Processing - 801 Chemistry
DOI:10.1016/j.proeng.2010.11.048
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 156>
Accession number:20102012937754
Title:Broad and tunable multiwavelength fiber laser at the assistance of modulation-instability-assisted four-wave mixing
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.(liuxueming72@yahoo.com)
Source title:Laser Physics
Abbreviated source title:Laser Phys.
Volume:20
Issue:4
Issue date:April 2010
Publication year:2010
Pages:842-846
Language:English
ISSN:1054660X
E-ISSN:15556611
Document type:Journal article (JA)
Publisher:Maik Nauka-Interperiodica Publishing, Profsoyuznaya Ul 90, Moscow, 117997, Russia
Abstract:Based on a piece of highly-nonlinear near-zero-dispersion-flattened photonic crystal fiber (PCF), a broadly tunable multiwavelength erbium-doped fiber laser is proposed by using a bi-directionally pumping scheme. This kind of PCF induces the modulation-instability-assisted four-wave mixing to generate new wavelengths. The proposed laser with excellent stability is tunable and switchable by adjusting the fiber Bragg gratings and the variable optical attenuators. The outstanding merits of the proposed multiwavelength laser are the flexible tuning and the ultrabroad spectral range over 150 nm. Especially, the proposed laser source can work at the wavelength of less than 1460 nm, overcoming the limit of gain bandwidth of erbium-doped fiber. © 2010 Pleiades Publishing, Ltd.
Number of references:26
Main heading:Photonic crystal fibers
Controlled terms:Electromagnetic wave attenuation - Erbium - Fiber Bragg gratings - Fiber lasers - Fibers - Four wave mixing - Photonic crystals - Ring lasers
Uncontrolled terms:Erbium doped fibers - Gain bandwidth - Laser sources - Multi wavelength fiber laser - Multiwavelength erbium-doped fiber lasers - Multiwavelength laser - Pumping schemes - Spectral range - Switchable - Variable optical attenuators
Classification code:951 Materials Science - 933.1 Crystalline Solids - 819.4 Fiber Products - 817 Plastics and Other Polymers: Products and Applications - 812 Ceramics, Refractories and Glass - 744.4 Solid State Lasers - 744 Lasers - 741.3 Optical Devices and Systems - 741.1.2 Fiber Optics - 741.1 Light/Optics - 711.1 Electromagnetic Waves in Different Media - 711 Electromagnetic Waves - 547.2 Rare Earth Metals
DOI:10.1134/S1054660X10070194
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 157>
Accession number:20102813067797
Title:Refinement of microstructure and enhancement of absorption for ultra-strength constructional steel
Authors:Zhang, Wei-Hu (1); Lu, Shu-Yuan (2); Zhang, Fu-Chun (3); Zhang, Zhi-Yong (1)
Author affiliation:(1) Xi'an Institute of Optical and Precision Mechanics of CAS, Xi'an 710068, China; (2) Dept. of Telecommunication, Xi'an Institute of Post and Telecommunication, Xi'an 710121, China; (3) School of Physics and Information, Yanan University, Yanan 716000, China
Corresponding author:Zhang, W.-H.(zwh@yau.edu.cn)
Source title:Cailiao Kexue yu Gongyi/Material Science and Technology
Abbreviated source title:Cailiao Kexue yu Gongyi
Volume:18
Issue:3
Issue date:June 2010
Publication year:2010
Pages:442-444
Language:Chinese
ISSN:10050299
CODEN:CKGOEY
Document type:Journal article (JA)
Publisher:Harbin Institute of Technology, P.O. Box 136, Harbin, 150001, China
Abstract:A series of bainitic structural steels with excellent combination of plasticity and toughness was developed by the reasonable design of chemical composition and effective optimization of heat treatment process. On condition that the ultimate tensile strength is over 1470 MPa, the impact energy absorption of V-type notch ( A <inf>KV</inf>≥132 J) has been doubled compared with that of the previously advanced martensitic steel with same strength level ( σ <inf>b</inf>>1560 MPa). Based on the results of microstructure analysis, the physical mechanism on the improvement of toughness was deeply discussed.
Number of references:8
Main heading:Tensile strength
Controlled terms:Absorption - Building materials - Energy absorption - Fatigue crack propagation - Ferrite - Martensitic steel - Microstructure
Uncontrolled terms:Chemical compositions - Ferrite laths - Heat treatment process - Impact energy absorption - Microstructure analysis - Physical mechanism - Structural steels - Sub-structure - Sub-structures - Ultimate tensile strength
Classification code:545.3 Steel - 801.4 Physical Chemistry - 802.3 Chemical Operations - 931.2 Physical Properties of Gases, Liquids and Solids - 931.3 Atomic and Molecular Physics - 933 Solid State Physics - 951 Materials Science - 531.2 Metallography - 411 Bituminous Materials - 412 Concrete - 413 Insulating Materials - 414 Masonry 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
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 158>
Accession number:20101912924786
Title:Compact all-fiber high-energy fiber laser with sub-300-fs duration
Authors:Liu, X.M. (1); Mao, D. (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:Optics Express
Abbreviated source title:Opt. Express
Volume:18
Issue:9
Issue date:April 26, 2010
Publication year:2010
Pages:8847-8852
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 a compact all-fiber high-energy fiber laser that consists of a laser oscillator and a compression section. The laser oscillator generates the pulses with high energy and large chirp. The compression section is made of a piece of standard single-mode fiber that dechirps the chirped pulses. The compact all-fiber fiber laser produces pulses with 8 nJ of the pulse energy and 290 fs of the pulse duration. © 2010 Optical Society of America.
Number of references:23
Main heading:Pulse generators
Controlled terms:Fiber lasers - Fibers - High energy physics - Pulsed laser applications
Uncontrolled terms:All fiber - Chirped pulse - High energy - Laser oscillators - Pulse durations - Pulse energies - Standard single mode fibers
Classification code:819.4 Fiber Products - 817 Plastics and Other Polymers: Products and Applications - 812 Ceramics, Refractories and Glass - 932.1 High Energy Physics - 744.9 Laser Applications - 741.1.2 Fiber Optics - 713.4 Pulse Circuits - 744.4 Solid State Lasers
DOI:10.1364/OE.18.008847
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 159>
Accession number:20105013489847
Title:Optical system design of visible camera for space target detection
Authors:Chang, Lingying (1); Zhao, Baochang (1); Wen, Desheng (1); Chen, Rongli (1); Ma, Zhen (1); Yao, Dawei (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:Chang, L.(lychang@opt.ac.cn)
Source title:Zhongguo Jiguang/Chinese Journal of Lasers
Abbreviated source title:Zhongguo Jiguang
Volume:37
Issue:SUPPL. 1
Issue date:November 2010
Publication year:2010
Pages:136-140
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 realize the detection of dark and weak target in space, the optical system of visible light detection camera with a large aperture is designed. Its effective focal length is 350 mm, F-number is 1/1.6, field of view is 3.2°, and working wavelength ranges from 450 to 950 nm. The structure of the visible light detection camera is described, and the structure form is determined to be Maksutov's two reflection system whose primary and secondary mirrors are spherical. CODE-V optical design software was used to iptimize the optical system. The image quality evaluation and thermal analysis result are presented. The result shows that each field spot diagram is nearly circular, 80% energy encircled is within the spot diameter of 26 μm, maximum distortion is less than 0.05% and lateral color is less than 5 μm, which meet the requirement of detection.
Number of references:8
Main heading:Optical systems
Controlled terms:Cameras - Image quality - Ion beams - Light - Light reflection - Optical design - Quality control - Software design - Systems analysis - Thermoanalysis
Uncontrolled terms:Detection camera - Effective focal lengths - Field of views - Image quality evaluation - Large aperture - Optical system designs - Optical-design software - Optics design - Secondary mirror - Space targets - Spot diagram - Spot diameter - Thermal analysis - Visible light - Wavelength ranges - Weak targets
Classification code:961 Systems Science - 932.1 High Energy Physics - 913.3 Quality Assurance and Control - 801 Chemistry - 742.2 Photographic Equipment - 741 Light, Optics and Optical Devices - 723.1 Computer Programming
DOI:10.3788/CJL20103701.0136
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 160>
Accession number:20104013270873
Title:Gaussian Sum Particle Filter for spacecraft attitude estimation
Authors:Yang, Shaodong (1); Wen, Desheng (1); Sun, Jing (1); Ma, Junyong (1)
Author affiliation:(1) Space Optical Technology Research Department, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, China
Corresponding author:Yang, S.
Source title:ICSPS 2010 - Proceedings of the 2010 2nd International Conference on Signal Processing Systems
Abbreviated source title:ICSPS - Proc. Int. Conf. Signal Process. Syst.
Volume:3
Monograph title:ICSPS 2010 - Proceedings of the 2010 2nd International Conference on Signal Processing Systems
Issue date:2010
Publication year:2010
Pages:V3566-V3570
Article number:5555680
Language:English
ISBN-13:9781424468911
Document type:Conference article (CA)
Conference name:2010 2nd International Conference on Signal Processing Systems, ICSPS 2010
Conference date:July 5, 2010 - July 7, 2010
Conference location:Dalian, China
Conference code:81758
Sponsor:Dalian University of Technology; Int. Assoc. Comput. Sci. Inf. Technol. (IACSIT); IEEE Nanjing Section
Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States
Abstract:A novel and efficient spacecraft attitude estimation method using Gaussian Sum Particle Filter is proposed based on vector observations. The attitude is represented by quaternion, and the local error is represented by the modified Rodrigues parameters. Gaussian mixture model is used to approximate the posterior density of the state, and the state update is carried out by sampling based methods. Meanwhile Expectation Maximization algorithm is introduced to avoid the collapsing of Gaussian mixture terms. The efficiency of Gaussian sum particle filter estimator for spacecraft attitude is validated by numerical simulation. The simulation results show that Gaussian mixture particle filter is superior to Particle Filter and Unscented Kalman Filter for spacecraft attitude estimation. © 2010 IEEE.
Number of references:12
Main heading:Gaussian distribution
Controlled terms:Adaptive systems - Algorithms - Computer simulation - Estimation - Image segmentation - Nonlinear filtering - Signal processing - Spacecraft
Uncontrolled terms:Attitude - Expectation-maximization algorithms - Gaussian Mixture Model - Gaussian mixtures - Gaussian sum - Gaussian sum particle filter - Local error - Modified rodrigues parameter - Numerical simulation - Particle filter - Quaternion - Sampling-based method - Simulation result - Spacecraft attitude - Spacecraft attitude estimation - Unscented Kalman Filter - Vector observations
Classification code:655.1 Spacecraft, General - 716.1 Information Theory and Signal Processing - 723 Computer Software, Data Handling and Applications - 921 Mathematics - 922.1 Probability Theory
DOI:10.1109/ICSPS.2010.5555680
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 161>
Accession number:20104213306917
Title:A digital pulse drive circuit for continuously modulated semiconductor laser
Authors:Song, Zhi-Yuan (1); Feng, Li (1); Zhu, Shao-Lan (1); Niu, Lin-Quan (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 10039, China
Corresponding author:Song, Z.-Y.(zhiyuan_song@opt.ac.cn)
Source title:Proceedings - 2nd International Conference on Information Technology and Computer Science, ITCS 2010
Abbreviated source title:Proc. - Int. Conf. Inf. Technol. Comput. Sci., ITCS
Monograph title:Proceedings - 2nd International Conference on Information Technology and Computer Science, ITCS 2010
Issue date:2010
Publication year:2010
Pages:244-246
Article number:5557141
Language:English
ISBN-13:9780769540740
Document type:Conference article (CA)
Conference name:2nd International Conference on Information Technology and Computer Science, ITCS2010
Conference date:July 24, 2010 - July 25, 2010
Conference location:Kiev, Ukraine
Conference code:81868
Sponsor:National Technical University of Ukraine "KPI"; Ternopil National Economic University; Huazhong University of Science and Technology; Harbin Institute of Technology; Hubei University of Technology
Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States
Abstract:A digital designing way of laser drive circuit for continuously modulate the frequency, pulse width and amplitude of the output of semiconductor laser has been demonstrated. Complex programmable logic device (CPLD) was utilized to generate square waves with tunable frequency, the accurate delaying chip and logic circuit which are digital controlled were used to generate electrical pulses with adjustable pulse width. The pulses were amplified by the laser diode driver. The maximum output current of the driver can be up to 600 mA. When the signal was used to drive the semiconductor laser, the shape of the pulses generated by the laser is identical with the electrical pulses. The repetition rate and pulse width of the laser pulse can be continuously adjustable from 1 to 10 kHz and 3 to 20 ns, respectively. Furthermore, the time of rising and falling edges for the laser pulse were less than 2 ns. © 2010 IEEE.
Number of references:9
Main heading:Pulse generators
Controlled terms:Computer science - Electric generators - Information technology - Lasers - Logic circuits - Logic devices - Photolithography - Pulse repetition rate - Semiconductor lasers - Switching circuits
Uncontrolled terms:Adjustable amplitude - Adjustable frequency - Digital - Drive circuit - Pulse width
Classification code:744.4.1 Semiconductor Lasers - 744.1 Lasers, General - 723 Computer Software, Data Handling and Applications - 722 Computer Systems and Equipment - 903 Information Science - 721.2 Logic Elements - 714.2 Semiconductor Devices and Integrated Circuits - 713.4 Pulse Circuits - 705.2 Electric Generators - 721 Computer Circuits and Logic Elements
DOI:10.1109/ITCS.2010.66
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 162>
Accession number:20102413003969
Title:Fabrication of micro devices by use of optical tweezers
Authors:Peng, Fei (1); Yao, Baoli (1); Lei, Ming (1); Yan, Shaohui (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, Shaanxi 710119, China; (2) Graduate University, Chinese Academy of Sciences, Beijing 100049, China
Corresponding author:Yao, B.(yaobl@opt.ac.cn)
Source title:Zhongguo Jiguang/Chinese Journal of Lasers
Abbreviated source title:Zhongguo Jiguang
Volume:37
Issue:5
Issue date:May 2010
Publication year:2010
Pages:1245-1252
Language:Chinese
ISSN:02587025
CODEN:ZHJIDO
Document type:Journal article (JA)
Publisher:Science Press, 18,Shuangqing Street,Haidian, Beijing, 100085, China
Abstract:Optical tweezers, as a powerful tool of manipulation of micro-objects, is commonly used for trapping micro-objects and controlling their movement. Making use of the highly focused heat energy at the laser focus and the transportation ability of the optical tweezers, the process of crystallization, the shape of crystal separating out from solution, and the arrangement mode of the deposition from precipitation reaction can be controlled precisely, which may be used as a means of making micro devices. The laser-induced crystallization method and the laser-assisted precipitation method are used to make micro devices with the copper sulfate and the calcium carbonate as the based materials, respectively. Different factors influencing grow speed of crystals are investigated. The condition of precipitation reaction fitting to the laser-assisted precipitation method is discussed. By comparing, the method of laser-induced crystallization works more efficiently, while the method of laser-assisted precipitation can produce more stable devices. The experimental equipment and the proposed methods not only spread the application domain of optical tweezers but also provide a new way for fabrication of micro devices.
Number of references:14
Main heading:Precipitation (chemical)
Controlled terms:Calcium - Calcium carbonate - Crystallization - Fabrication - Optical instruments - Optical tweezers
Uncontrolled terms:Application domains - Copper sulfate - Experimental equipments - Heat energy - Laser focus - Laser-assisted - Laser-induced crystallization - Micro devices - Micro-objects - Optical fabrication - Precipitation methods - Precipitation reaction
Classification code:933.1 Crystalline Solids - 913.4 Manufacturing - 804 Chemical Products Generally - 941.3 Optical Instruments - 802.3 Chemical Operations - 741.3 Optical Devices and Systems - 549.2 Alkaline Earth Metals - 744.9 Laser Applications
DOI:10.3788/CJL20103705.1245
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 163>
Accession number:20103513193253
Title:Design and optimization of highly nonlinear low-dispersion crystal fiber with high birefringence for four-wave mixing
Authors:Zhang, Ya-Ni (1); Ren, Li-Yong (1); Gong, Yong-Kang (1); Li, Xiao-Hui (1); Wang, Lei-Ran (1); Sun, Chuan-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) Department of Physics and Information Technology, Baoji College of Arts and Science, Baoji 721007, China
Corresponding author:Zhang, Y.-N.(Zhangyn@opt.ac.cn)
Source title:Applied Optics
Abbreviated source title:Appl. Opt.
Volume:49
Issue:16
Issue date:June 1, 2010
Publication year:2010
Pages:3208-3214
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 have proposed a novel type of photonic crystal fiber (PCF) with low dispersion and high nonlinearity for four-wave mixing. This type of fiber is composed of a solid silica core and a cladding with a squeezed hexagonal lattice elliptical airhole along the fiber length. Its dispersion and nonlinearity coefficient are investigated simultaneously by using the full vectorial finite element method. Numerical results show that the proposed highly nonlinear low-dispersion fiber has a total dispersion as low as ±2:5 ps nm <sup>-1</sup> km<sup>-1</sup> over an ultrabroad wavelength range from 1.43 to 1:8 μm, and the corresponding nonlinearity coefficient and birefringence are about 150 W<sup>-1</sup> km<sup>-1</sup> and 2:5 × 10<sup>-3</sup> at 1:55 μm, respectively. The proposed PCF with low ultraflattened dispersion, high nonlinearity, and high birefringence can have important application in four-wave mixing. © 2010 Optical Society of America.
Number of references:28
Main heading:Photonic crystal fibers
Controlled terms:Birefringence - Crystal whiskers - Dispersion (waves) - Dispersions - Fibers - Finite element method - Four wave mixing - Photonic crystals - Silica
Uncontrolled terms:Crystal fiber - Design and optimization - Fiber length - Hexagonal lattice - High birefringence - High nonlinearity - Highly nonlinear - Nonlinearity coefficient - Numerical results - Solid silica - Ultraflattened dispersion - Vectorial finite element methods - Wavelength ranges
Classification code:921.6 Numerical Methods - 817 Plastics and Other Polymers: Products and Applications - 812 Ceramics, Refractories and Glass - 951 Materials Science - 801.4 Physical Chemistry - 741.1 Light/Optics - 711.1 Electromagnetic Waves in Different Media - 741.3 Optical Devices and Systems
DOI:10.1364/AO.49.003208
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 164>
Accession number:20102212962495
Title:Fluorescence hydrogen peroxide probe based on a microstructured polymer optical fiber modified with a titanium dioxide film
Authors:Li, Dongdong (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, Chinese Academy of Science, Beijing 100039, China
Corresponding author:Wang, L.(wangll@opt.ac.cn)
Source title:Applied Spectroscopy
Abbreviated source title:Appl Spectrosc
Volume:64
Issue:5
Issue date:May 2010
Publication year:2010
Pages:514-519
Language:English
ISSN:00037028
CODEN:APSPA4
Document type:Journal article (JA)
Publisher:Society for Applied Spectroscopy, 201B Broadway Street, Frederick, MD 21702-6501, United States
Abstract:A highly sensitive microstructured polymer optical fiber (MPOF) probe for hydrogen peroxide was made by forming a rhodamine 6G-doped titanium dioxide film on the side walls of array holes in an MPOF. It was found that hydrogen peroxide only has a response to the MPOF probe in a certain concentration of potassium iodide in sulfuric acid solution. The calibration graph of fluorescence intensity versus hydrogen peroxide concentration is linear in the range of 1.6 × 10<sup>-7</sup> mol/L to 9.6 × 10<sup>-5</sup> mol/L. The method, with high sensitivity and a wide linear range, has been applied to the determination of trace amounts of hydrogen peroxide in a few real samples, such as rain water and contact lens disinfectant, with satisfactory results. © 2010 Society for Applied Spectroscopy.
Number of references:28
Main heading:Hydrogen peroxide
Controlled terms:Fiber optics - Fibers - Fluorescence - Hydrogen - Optical fibers - Optical materials - Oxidation - Oxide films - Polymers - Potassium - Potassium iodide - Probes - Sulfuric acid - Titanium - Titanium dioxide - Titanium oxides - Trace analysis
Uncontrolled terms:Calibration graphs - Concentration of - Fluorescence intensities - Fluorescence probe - Fluorescence probes - High sensitivity - Highly sensitive - Hydrogen peroxide concentration - Microstructured polymer optical fiber - Microstructured polymer optical fibers - Microstructured polymer optical fibers (mPOF) - Probe-based - Rain water - Real samples - Rhodamine 6G - Side walls - Sulfuric acid solution - Titanium dioxide films - Trace amounts - Wide-linear range
Classification code:944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments - 804.2 Inorganic Compounds - 812 Ceramics, Refractories and Glass - 815.1 Polymeric Materials - 817 Plastics and Other Polymers: Products and Applications - 819.4 Fiber Products - 941 Acoustical and Optical Measuring Instruments - 942 Electric and Electronic Measuring Instruments - 943 Mechanical and Miscellaneous Measuring Instruments - 804 Chemical Products Generally - 542.3 Titanium and Alloys - 549.1 Alkali Metals - 712.1.2 Compound Semiconducting Materials - 802.2 Chemical Reactions - 741.1 Light/Optics - 741.3 Optical Devices and Systems - 801 Chemistry - 741.1.2 Fiber Optics
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 165>
Accession number:20104913451952
Title:A review of motion estimation algorithms for video compression
Authors:Xie, Liyin (1); Su, Xiuqin (1); Zhang, Shun (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 College, Chinese Academy of Science, Beijing 100039, China
Corresponding author:Xie, L.(xqsu@opt.ac.cn)
Source title:ICCASM 2010 - 2010 International Conference on Computer Application and System Modeling, Proceedings
Abbreviated source title:ICCASM - Int. Conf. Comput. Appl. Syst. Model., Proc.
Volume:2
Monograph title:ICCASM 2010 - 2010 International Conference on Computer Application and System Modeling, Proceedings
Issue date:2010
Publication year:2010
Pages:V2446-V2450
Article number:5620542
Language:English
ISBN-13:9781424472369
Document type:Conference article (CA)
Conference name:2010 International Conference on Computer Application and System Modeling, ICCASM 2010
Conference date:October 22, 2010 - October 24, 2010
Conference location:Shanxi, Taiyuan, China
Conference code:82681
Sponsor:Shanxi University; Taiyuan University of Technology; Taiyuan University of Science and Technology; Shanxi Normal University
Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States
Abstract:The key to high performance of video compression lies in an efficient reduction of the temporal redundancy. For this purpose, the block-based motion estimation (BBME) technique has been successfully applied in the video compression standards from H.261 to H.264. The most straightforward BBME method must be full search algorithm (FSA) that searches every candidate position within the search range. Since FS consumes extremely high computational cost, development and refinement on ME algorithms have been fueled to archive better tradeoff between the computational cost and the ME speed. In this paper, we study the low complexity ME algorithms and classify them into three categories, namely modeling the matching error surface, fast full search and reduction of searching candidate points. In the following sections, we will have a brief review across all these categories. The aim of this review is to provide the succeeding researchers with some constructive information in design of the fast ME algorithms. © 2010 IEEE.
Number of references:20
Main heading:Motion estimation
Controlled terms:Algorithms - Computer applications - Estimation - Image compression - Motion Picture Experts Group standards
Uncontrolled terms:Block-based motion estimation - Candidate positions - Computational costs - Fast algorithms - Fast full search - Full search algorithm - H.264/AVC - Low complexity - Matching error - Motion estimation algorithm - Search range - Temporal redundancy - Video compression - Video compression standards
Classification code:716.1 Information Theory and Signal Processing - 723.2 Data Processing and Image Processing - 723.5 Computer Applications - 741 Light, Optics and Optical Devices - 921 Mathematics
DOI:10.1109/ICCASM.2010.5620542
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 166>
Accession number:20101912918466
Title:Analysis and calculation of space-based infrared detecting system
Authors:Niu, Jinxing (1); Zhou, Renkui (1); Liu, Zhaohui (1); Cai, Zhan'en (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 100039, China
Corresponding author:Niu, J.(niujinxing@opt.ac.cn)
Source title:Guangxue Xuebao/Acta Optica Sinica
Abbreviated source title:Guangxue Xuebao
Volume:30
Issue:3
Issue date:March 2010
Publication year:2010
Pages:768-771
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 sources of stray sight of space-based infrared detecting system are studied. They are analyzed and calcuated by use of blackboby radiation. The irradiance of the focal plane which arises from earth and atmosphere is analyzed by model established in TracePro. The projected solid angle subtended by the surface of earth and atmosphere to the camera can be known by the method of ray-tracing. The method makes the complex calculation become easy. Then the noises of detecting system are analyzed. The noise-equivalent-irradiance (NEI) of a certain Sofradir infrared-focal-plane-array is calculated and compared with irradiance induced by other stray lights. The result proved that the irradiance of the focal plane which arises from stray light is far bigger than the NEI of the infrared-focal-plane-array. Methods should be adopted to suppress stray light. The demand of rejection of the stray light from earth and atmosphere and the demand of the temperature of optical system are given. This result can be a reference for system design.
Number of references:16
Main heading:Earth atmosphere
Controlled terms:Computer software - Focusing - Headlights - Infrared detectors - Optical systems - Stray light
Uncontrolled terms:Detecting systems - Focal Plane - Focal planes - Infrared detecting - Infrared detection - SOFRADIR - Solid angle - Space-based - System design - TracePro
Classification code:944.7 Radiation Measuring Instruments - 914.1 Accidents and Accident Prevention - 751.1 Acoustic Waves - 741.3 Optical Devices and Systems - 741.1 Light/Optics - 723 Computer Software, Data Handling and Applications - 711.1 Electromagnetic Waves in Different Media - 707.2 Electric Lamps - 662.4 Automobile and Smaller Vehicle Components - 481.3 Geophysics - 443.1 Atmospheric Properties
DOI:10.3788/AOS20103003.0768
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 167>
Accession number:20101912920833
Title:A technology to generate fast-edge pulses using step recovery diode
Authors:Gou, Yongsheng (1); Liu, Baiyu (1); Bai, Yonglin (1); Ouyang, Xian (1); Zhang, Wei (1); Li, Yan (1); Xue, Yingdong (1)
Author affiliation:(1) Xi'an Institute of Optics and Precision Machanics, Chinise Academy of Sciences, Xi'an 710119, China
Corresponding author:Gou, Y.(yshgou@163.com)
Source title:Chinese Journal of Electronics
Abbreviated source title:Chin J Electron
Volume:19
Issue:2
Issue date:April 2010
Publication year:2010
Pages:378-380
Language:English
ISSN:10224653
CODEN:CHJEEW
Document type:Journal article (JA)
Publisher:Chinese Institute of Electronics, P.O. Box 165, Beijing, 100036, China
Abstract:A rectangular pulse generator circuit with fast rising and falling edge will be presented in this paper. The generator circuit was designed by controlling the quantity of carriers in the middle layer from regulating forward current of the SRD (Step recovery diode), and then indirectly controlling the pulse width. It is based on the principle that large reverse current will flow through the diode and last for a relatively long time when it is reverse biased. Experimental results have been analyzed in physical level. They are tallied with theoretical results. The circuit can generate rectangular pulses with rise time about 150ps, fall time about 250ps, amplitude about 10V and pulse width adjustable from Ins to 10ns in 50ω load. The trig jitter is less than 5ps and the amplitude jitter is better than 4%.
Number of references:11
Main heading:Pulse generators
Controlled terms:Diodes - Jitter - Radar tracking - Signal generators
Uncontrolled terms:Fall time - Falling edge - Flowthrough - Forward currents - Generator circuits - Middle layer - Physical level - Pulse width - Rectangular pulse - Reverse currents - Risetimes - Step recovery diodes - Theoretical result
Classification code:718 Telephone Systems and Related Technologies; Line Communications - 717 Optical Communication - 716.2 Radar Systems and Equipment - 716 Telecommunication; Radar, Radio and Television - 722.3 Data Communication, Equipment and Techniques - 715 Electronic Equipment, General Purpose and Industrial - 714.1 Electron Tubes - 713.5 Electronic Circuits Other Than Amplifiers, Oscillators, Modulators, Limiters, Discriminators or Mixers - 713.4 Pulse Circuits - 714.2 Semiconductor Devices and Integrated Circuits
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 168>
Accession number:20101912913824
Title:Effect of structural modifications on the switching voltage of a holographic polymer-dispersed liquid crystal lattice
Authors:Milavec, J. (1); Devetak, M. (1); Li, J. (2); Rupp, R.A. (2); Yao, B. (4); Drevenek-Olenik, I. (1)
Author affiliation:(1) Department of Complex Matter, J Stefan Institute, Ljubljana, Slovenia; (2) TEDA Applied Physics School, School of Physics, Nankai University, Tianjin 300457, China; (3) Nonlinear Physics Group, Faculty of Physics, University of Vienna, Boltzmanngasse 5, A-1090 Vienna, Austria; (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; (5) Faculty of Mathematics and Physics, University of Ljubljana, Ljubljana, Slovenia
Corresponding author:Milavec, J.
Source title:Journal of Optics
Abbreviated source title:J. Opt.
Volume:12
Issue:1
Issue date:2010
Publication year:2010
Article number:015106
Language:English
ISSN:20408978
E-ISSN:20408986
Document type:Journal article (JA)
Publisher:Institute of Physics Publishing, Temple Back, Bristol, BS1 6BE, United Kingdom
Abstract:The effect of temperature-induced variations of the nematic director field on the switching voltage of a 2D square holographic polymer-dispersed liquid crystal (HPDLC) lattice was investigated for a mixture prepared from UV-curable commercially available constituents. At temperatures far below the nematic-isotropic phase transition, the switching voltage is governed by the domain structure of the director field, while at temperatures close to the phase transition it is governed by elastic and dielectric properties of the liquid crystal (LC) material. The crossover occurs at the temperature at which a thin interface region between the LC domains and the polymer pilasters is melted into the isotropic phase. We also performed a comparative study of the square lattices recorded with the use of four and three coherent beams and resolved numerous differences in their structural and switching properties that arise from different spatial profiles of the associated interference fields. © 2010 IOP Publishing Ltd.
Number of references:39
Main heading:Phase transitions
Controlled terms:Crystal lattices - Curing - Dielectric properties - Liquid crystal polymers - Liquid crystals - Liquids - Lithography - Phase interfaces - Photonic crystals - Polymers - Switching
Uncontrolled terms:Coherent beams - Comparative studies - Director fields - Domain structure - Effect of temperature - Holographic lithography - Holographic polymer dispersed liquid crystal - Interface regions - Interference field - Isotropic phase - Nematic director - Nematic isotropic phase transition - Polymer dispersed liquid crystals - Spatial profiles - Square lattices - Structural modifications - Switching properties - Switching voltages - UV curable
Classification code:804 Chemical Products Generally - 815.1 Polymeric Materials - 815.1.1 Organic Polymers - 802.2 Chemical Reactions - 818.3 Rubber and Elastomer Processing - 933.1 Crystalline Solids - 933.1.1 Crystal Lattice - 931.2 Physical Properties of Gases, Liquids and Solids - 801.4 Physical Chemistry - 641.1 Thermodynamics - 701 Electricity and Magnetism - 708.1 Dielectric Materials - 531.2 Metallography - 714.2 Semiconductor Devices and Integrated Circuits - 741.3 Optical Devices and Systems - 745.1 Printing - 721.1 Computer Theory, Includes Formal Logic, Automata Theory, Switching Theory, Programming Theory
DOI:10.1088/2040-8978/12/1/015106
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 169>
Accession number:20104813423741
Title:On the transformation from automata into Petri nets in FMS
Authors:Zhang, Jian (1); Cao, Jianzhong (1); Wu, Dengshan (1)
Author affiliation:(1) Department of Flight Vehicle Optical Measurement and Technology Research, Xi'an Institute of Optics and Precision Mechanics, CAS, Xi'an 710119, China
Corresponding author:Zhang, J.(zj@opt.ac.cn)
Source title:2010 IEEE International Conference on Mechatronics and Automation, ICMA 2010
Abbreviated source title:IEEE Int. Conf. Mechatronics Autom., ICMA
Monograph title:2010 IEEE International Conference on Mechatronics and Automation, ICMA 2010
Issue date:2010
Publication year:2010
Pages:1647-1651
Article number:5588899
Language:English
ISBN-13:9781424451418
Document type:Conference article (CA)
Conference name:2010 IEEE International Conference on Mechatronics and Automation, ICMA 2010
Conference date:August 4, 2010 - August 7, 2010
Conference location:Xi'an, China
Conference code:82380
Sponsor:IEEE Robotics and Automaton Society; Xidian University; University of Alberta; Kagawa University
Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States
Abstract:Automata and Petri nets are both used in research of discrete event systems (DES). Based on supervisory control theory, this paper provides an algorithm to convert automata into Petri nets in flexible manufacturing systems (FMS). The automaton to be transformed should satisfy three conditions: (1) it contains no self-loop, (2) its initial state is also the marker state, and (3) it is nonblocking. The automaton is first divided into several sub-automata by projecting it onto some groups of events. Second the redundant automata are deleted. Then the sub-automata remained are changed separately into places with transitions and arcs in Petri nets formalism. In Petri nets formalism of FMS, places are distinguished by idle, operation, and resource places. We set the initial tokens of idle and resource places to be n - 1 (n is the number of states corresponding to the automaton) and set the initial tokens of the operation places to be zero. Then the places and transitions are connected together to form a complete Petri net. © 2010 IEEE.
Number of references:18
Main heading:Automata theory
Controlled terms:Flexible manufacturing systems - Graph theory - Mechatronics - Petri nets - Translation (languages)
Uncontrolled terms:Discrete event systems - Initial state - Non-blocking - Number of state - Supervisory control theory
Classification code:608 Mechanical Engineering, General - 723 Computer Software, Data Handling and Applications - 723.5 Computer Applications - 913.4.1 Flexible Manufacturing Systems - 921.4 Combinatorial Mathematics, Includes Graph Theory, Set Theory
DOI:10.1109/ICMA.2010.5588899
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 170>
Accession number:20100912743874
Title:One-dimensional steady-state bright photovoltaic solitons in LiNbO<inf>3</inf>:Fe crystal with background illumination
Authors:Zhang, Meizhi (1); Lu, Keqing (1); Cheng, Guanghua (1); Zhang, Yiqi (1); Li, Kehao (1); Zhang, Lei (1); Zhang, Yanpeng (3)
Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academic of Sciences, Xi'an, 710119, China; (2) Graduate school of Chinese Academic of Science, Beijing, 100039, China; (3) Key Laboratory for Physical Electronics and Devices, the Ministry of Education, Xi'an Jiaotong University, Xi'an, 710049, China
Corresponding author:Zhang, M.(Meizhi_zhang@126.com)
Source title:Optik
Abbreviated source title:Optik
Volume:121
Issue:6
Issue date:March 2010
Publication year:2010
Pages:575-580
Language:English
ISSN:00304026
Document type:Journal article (JA)
Publisher:Urban und Fischer Verlag Jena, P.O. Box 100537, Jena, 07705, Germany
Abstract:We investigate theoretically and experimentally one-dimensional bright photovoltaic solitons in LiNbO<inf>3</inf>:Fe crystal by use of the background illumination. We find that, in LiNbO<inf>3</inf>:Fe crystal, bright photovoltaic solitons can be obtained with background illumination for κ>1, where κ is the ratio of the background illumination photovoltaic constant to the soliton optical beam's photovoltaic constant. For κ<1, dark photovoltaic solitons are generated. On the other hand, our experiments show good agreement with theoretical prediction for the soliton existence curve in a special intensity ratio. Crown Copyright © 2008.
Number of references:22
Main heading:Solitons
Controlled terms:Light refraction - Nonlinear optics - Photoreactivity - Photorefractive materials
Uncontrolled terms:Background illumination - Fe crystals - Intensity ratio - Optical beams - Photorefractive effects - Photovoltaic soliton - Self-defocusing - Self-focusing - Theoretical prediction
Classification code:741.1 Light/Optics - 741.1.1 Nonlinear Optics - 741.3 Optical Devices and Systems - 921.1 Algebra - 931.3 Atomic and Molecular Physics
DOI:10.1016/j.ijleo.2008.09.020
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 171>
Accession number:20101712883042
Title:Geometric distortion insensitive image watermarking in affine covariant regions
Authors:Gao, Xinbo (1); Deng, Cheng (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, China; (3) School of Computer Engineering, Nanyang Technological University, Singapore 639798, Singapore
Corresponding author:Gao, X.(xbgao@mail.xidian.edu.cn)
Source title:IEEE Transactions on Systems, Man and Cybernetics Part C: Applications and Reviews
Abbreviated source title:IEEE Trans Syst Man Cybern Pt C Appl Rev
Volume:40
Issue:3
Issue date:May 2010
Publication year:2010
Pages:278-286
Article number:5378648
Language:English
ISSN:10946977
CODEN:ITCRFH
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:Feature-based image watermarking schemes, which aim to survive various geometric distortions, have attracted great attention in recent years. Existing schemes have shown robustness against rotation, scaling, and translation, but few are resistant to cropping, nonisotropic scaling, random bending attacks (RBAs), and affine transformations. Seo and Yoo present a geometrically invariant image watermarking based on affine covariant regions (ACRs) that provide a certain degree of robustness. To further enhance the robustness, we propose a new image watermarking scheme on the basis of Seos work, which is insensitive to geometric distortions as well as common image processing operations. Our scheme is mainly composed of three components: 1) feature selection procedure based on graph theoretical clustering algorithm is applied to obtain a set of stable and nonoverlapped ACRs; 2) for each chosen ACR, local normalization, and orientation alignment are performed to generate a geometrically invariant region, which can obviously improve the robustness of the proposed watermarking scheme; and 3) in order to prevent the degradation in image quality caused by the normalization and inverse normalization, indirect inverse normalization is adopted to achieve a good compromise between the imperceptibility and robustness. Experiments are carried out on an image set of 100 images collected from Internet, and the preliminary results demonstrate that the developed method improves the performance over some representative image watermarking approaches in terms of robustness. © 2006 IEEE.
Number of references:27
Main heading:Watermarking
Controlled terms:Alignment - Clustering algorithms - Feature extraction - Geometry - Image quality
Uncontrolled terms:Affine transformations - Degree of robustness - Dominant gradient - Feature selection - Feature-based - Geometric distortion - Gradient images - Image sets - Image Watermarking - Invariant regions - Random bending attacks - Rotation , scaling , and translations - Three component - Watermarking schemes
Classification code:921 Mathematics - 903.1 Information Sources and Analysis - 811.1.1 Papermaking Processes - 751.1 Acoustic Waves - 741.1 Light/Optics - 741 Light, Optics and Optical Devices - 723.5 Computer Applications - 721 Computer Circuits and Logic Elements - 716 Telecommunication; Radar, Radio and Television - 603.1 Machine Tools, General - 601.1 Mechanical Devices
DOI:10.1109/TSMCC.2009.2037512
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 172>
Accession number:20105213531508
Title:Azimuthons in weakly nonlinear waveguides of different symmetries
Authors:Zhang, Yiqi (1); Skupin, Stefan (1); Maucher, Fabian (1); Galestian Pour, Arpa (3); Lu, Keqing (2); Krolikowski, Wieslaw (4)
Author affiliation:(1) Max Planck Institute for the Physics of Complex Systems, Nöthnitzer Strae 38, 01187 Dresden, Germany; (2) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics of Chinese Academy of Sciences, 710119 Xian, China; (3) Institute of Condensed Matter Theory and Solid State Optics, Friedrich Schiller University, Max-Wien-Platz 1, 07743 Jena, Germany; (4) Laser Physics Center, Research School of Physics and Engineering, Australian National University, Canberra, ACT 0200, Australia
Corresponding author:Zhang, Y.
Source title:Optics Express
Abbreviated source title:Opt. Express
Volume:18
Issue:26
Issue date:December 20, 2010
Publication year:2010
Pages:27846-27857
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 show that weakly guiding nonlinear waveguides support stable propagation of rotating spatial solitons (azimuthons). We investigate the role of waveguide symmetry on the soliton rotation. We find that azimuthons in circular waveguides always rotate rigidly during propagation and the analytically predicted rotation frequency is in excellent agreementwith numerical simulations. On the other hand, azimuthons in square waveguides may experience spatial deformation during propagation. Moreover, we show that there is a critical value for the modulation depth of azimuthons above which solitons just wobble back and forth, and below which they rotate continuously. We explain these dynamics using the concept of energy difference between different orientations of the azimuthon. © 2010 Optical Society of America.
Number of references:31
Main heading:Waveguides
Controlled terms:Rotation - Solitons
Uncontrolled terms:Azimuthons - Critical value - Energy differences - Modulation depth - Nonlinear waveguides - Numerical simulation - Rotation frequencies - Spatial deformation - Spatial solitons - Square waveguide
Classification code:601.1 Mechanical Devices - 714.3 Waveguides - 931.3 Atomic and Molecular Physics
DOI:10.1364/OE.18.027846
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 173>
Accession number:20102413003779
Title:Mid-infrared emission properties of Ho<sup>3+</sup>-doped Ge-Ga-S-CsI glasses
Authors:Zhu, Jun (1); Dai, Shi-Xun (1); Peng, Bo (2); Xu, Tie-Feng (1); Wang, Xun-Si (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 Academy of Science, Xi'an 710119, China; (3) Laboratoire de Verres et Ceramiques, Université de Rennes I, Rennes, France 35042, France
Corresponding author:Zhu, J.(zhujun0807@hotmail.com)
Source title:Wuji Cailiao Xuebao/Journal of Inorganic Materials
Abbreviated source title:Wuji Cailiao Xuebao
Volume:25
Issue:5
Issue date:May 2010
Publication year:2010
Pages:546-550
Language:Chinese
ISSN:1000324X
CODEN:WCXUET
Document type:Journal article (JA)
Publisher:Science Press, 18,Shuangqing Street,Haidian, Beijing, 100085, China
Abstract:A serial of chalcogenide glasses based on Ge-Ga-S-CsI system doped with the different Ho<sup>3+</sup> ions were synthesized by melt-quenching technique. The properties of glasses including refractive indexes, absorption spectra, mid-infrared emission spectra and lifetimes of <sup>5</sup>I<inf>6</inf> level of Ho<sup>3+</sup>ions were measured. The Judd-Ofelt intensity parameters Ω<inf>i</inf> (i=2,4,6), oscillator strength f<inf>cal</inf>, spontaneous transition probabilities A<inf>rad</inf> for Ho<sup>3+</sup>ion were calculated by Judd-Ofelt theory. Multiphonon relaxation rates of the Ho<sup>3+</sup>:<sup>5</sup>I<inf>5</inf> &rarr<sup>5</sup>I<inf>6</inf> and <sup>5</sup>I<inf>6</inf>&rarr<sup>5</sup>I<inf>7</inf> in Ge-Ga-S-CsI glasses were evaluated. Effect of Ho<sup>3+</sup>ion concentration on the fluorescence spectra was investigated. The results indicate that the fluorescence under 900 nm excitation with peak wavelength at 2.81μm and 3.86μm are due to the Ho<sup>3+</sup>:<sup>5</sup>I<inf>5</inf> &rarr<sup>5</sup>I<inf>6</inf> and <sup>5</sup>I<inf>6</inf>&rarr<sup>5</sup>I<inf>7</inf> transition, respectively. The intensity of the mid-infrared fluorescence are enhanced with the Ho<sup>3+</sup> ion concentration increasing from 0.5wt% to 1.0wt%. Multiphonon relaxation rates are 29 s<sup>-1</sup> and 34 s<sup>-1</sup> for the Ho<sup>3+</sup>:<sup>5</sup>I<inf>5</inf> &rarr<sup>5</sup>I<inf>6</inf> and <sup>5</sup>I<inf>6</inf>&rarr<sup>5</sup>I<inf>7</inf> transition, respectively.
Number of references:23
Main heading:Holmium
Controlled terms:Emission spectroscopy - Fluorescence - Germanium - Glass - Infrared devices - Infrared spectroscopy - Ions - Refractive index - Relaxation oscillators
Uncontrolled terms:c-Si systems - Chalcogenide glass - Fluorescence spectra - Ion concentrations - Judd Ofelt theory - Judd-Ofelt intensity parameters - Melt quenching techniques - Mid-infrared emission - Midinfrared - Multiphonon relaxations - Oscillator strengths - Peak wavelength - Spontaneous transition probabilities
Classification code:931.3 Atomic and Molecular Physics - 931.2 Physical Properties of Gases, Liquids and Solids - 812.3 Glass - 804 Chemical Products Generally - 801 Chemistry - 941.4 Optical Variables Measurements - 741.3 Optical Devices and Systems - 713.2 Oscillators - 701.1 Electricity: Basic Concepts and Phenomena - 549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals - 547.2 Rare Earth Metals - 741.1 Light/Optics
DOI:10.3724/SP.J.1077.2010.00546
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 174>
Accession number:20104313334155
Title:An integrated aurora image retrieval system: AuroraEye
Authors:Fu, Rong (1); Gao, Xinbo (1); Li, Xuelong (2); Tao, Dacheng (3); Jian, Yongjun (1); Li, Jie (1); Hu, Hongqiao (4); Yang, Huigen (4)
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; (3) School of Computer Engineering, Nanyang Technological University, 50 Nanyang Avenue, Blk N4, Singapore 639798, Singapore; (4) SOA Key Laboratory for Polar Science, Polar Research Institute of China, Shanghai 200136, China
Corresponding author:Tao, D.(dacheng.tao@ieee.org)
Source title:Journal of Visual Communication and Image Representation
Abbreviated source title:J Visual Commun Image Represent
Volume:21
Issue:8
Issue date:November 2010
Publication year:2010
Pages:787-797
Language:English
ISSN:10473203
E-ISSN:10959076
CODEN:JVCRE7
Document type:Journal article (JA)
Publisher:Academic Press Inc., 6277 Sea Harbor Drive, Orlando, FL 32887-4900, United States
Abstract:With the digital all-sky imager (ASI) emergence in aurora research, millions of images are captured annually. However, only a fraction of which can be actually used. To address the problem incurred by low efficient manual processing, an integrated image analysis and retrieval system is developed. For precisely representing aurora image, macroscopic and microscopic features are combined to describe aurora texture. To reduce the feature dimensionality of the huge dataset, a modified local binary pattern (LBP) called ALBP is proposed to depict the microscopic texture, and scale-invariant Gabor and orientation-invariant Gabor are employed to extract the macroscopic texture. A physical property of aurora is inducted as region features to bridge the gap between the low-level visual features and high-level semantic description. The experiments results demonstrate that the ALBP method achieves high classification rate and low computational complexity. The retrieval simulation results show that the developed retrieval system is efficient for huge dataset. © 2010 Elsevier Inc. All rights reserved.
Number of references:34
Main heading:Feature extraction
Controlled terms:Computational complexity - Content based retrieval - Image analysis - Information retrieval - Textures
Uncontrolled terms:Adaptive LBP - Aurora - Content based image retrieval - Database - Gabor - Image texture analysis - Local binary patterns
Classification code:716 Telecommunication; Radar, Radio and Television - 721.1 Computer Theory, Includes Formal Logic, Automata Theory, Switching Theory, Programming Theory - 723.5 Computer Applications - 741 Light, Optics and Optical Devices - 933 Solid State Physics
DOI:10.1016/j.jvcir.2010.06.002
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 175>
Accession number:20104713405551
Title:Low-timing-jitter, stretched-pulse passively mode-locked fiber laser with tunable repetition rate and high operation stability
Authors:Liu, Yuanshan (1); Zhang, Jian-Guo (1); Chen, Guofu (1); Zhao, Wei (1); Bai, Jing (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 Engineering and Design, London South Bank University, London SE1 0AA, United Kingdom
Corresponding author:Liu, Y.(yuanshanliu@gmail.com)
Source title:Journal of Optics
Abbreviated source title:J. Opt.
Volume:12
Issue:9
Issue date:September 2010
Publication year:2010
Article number:095204
Language:English
ISSN:20408978
E-ISSN:20408986
Document type:Journal article (JA)
Publisher:Institute of Physics Publishing, Temple Back, Bristol, BS1 6BE, United Kingdom
Abstract:We design a low-timing-jitter, repetition-rate-tunable, stretched-pulse passively mode-locked fiber laser by using a nonlinear amplifying loop mirror (NALM), a semiconductor saturable absorber mirror (SESAM), and a tunable optical delay line in the laser configuration. Low-timing-jitter optical pulses are stably produced when a SESAM and a 0.16 m dispersion compensation fiber are employed in the laser cavity. By inserting a tunable optical delay line between NALM and SESAM, the variable repetition-rate operation of a self-starting, passively mode-locked fiber laser is successfully demonstrated over a range from 49.65 to 50.47 MHz. The experimental results show that the newly designed fiber laser can maintain the mode locking at the pumping power of 160 mW to stably generate periodic optical pulses with width less than 170 fs and timing jitter lower than 75 fs in the 1.55 μm wavelength region, when the fundamental repetition rate of the laser is continuously tuned between 49.65 and 50.47 MHz. Moreover, this fiber laser has a feature of turn-key operation with high repeatability of its fundamental repetition rate in practice. © 2010 IOP Publishing Ltd Printed in the UK & the USA.
Number of references:25
Main heading:Mode-locked fiber lasers
Controlled terms:Electric delay lines - Fiber lasers - Fibers - Laser mode locking - Laser tuning - Lasers - Light pulse generators - Mirrors - Optical signal processing - Pulse generators - Pulse repetition rate - Pumping (laser) - Semiconductor lasers - Stabilization - Time measurement - Timing jitter - Ultrashort pulses - Waves
Uncontrolled terms:Dispersion-compensation fibers - Laser cavity - Laser configuration - Laser stabilization - Mode-locked laser - Modelocking - Nonlinear amplifying loop mirrors - Operation stability - Optical pulse - Periodic optical pulse - Pulse generation - Pumping power - Repetition rate - Repetition-rate operation - Self-starting - Semiconductor saturable absorber mirrors - Tunable lasers - Tunable optical delay line - Turn-key - Wavelength regions
Classification code:951 Materials Science - 741.1.2 Fiber Optics - 741.3 Optical Devices and Systems - 744 Lasers - 812 Ceramics, Refractories and Glass - 817 Plastics and Other Polymers: Products and Applications - 943.3 Special Purpose Instruments - 718 Telephone Systems and Related Technologies; Line Communications - 716 Telecommunication; Radar, Radio and Television - 713.5 Electronic Circuits Other Than Amplifiers, Oscillators, Modulators, Limiters, Discriminators or Mixers - 713.4 Pulse Circuits - 711 Electromagnetic Waves - 703 Electric Circuits - 717 Optical Communication
DOI:10.1088/2040-8978/12/9/095204
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 176>
Accession number:20101412822804
Title:Experimental study on phase-locking of two high-power all-fiber lasers
Authors:Zhao, Baoyin (1); Duan, Kailang (1); Liu, Yang (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 University, Chinese Academy of Sciences, Beijing, 100049, China; (3) Wuhan Ordnance Noncommissioned Officers Academy, Wuhan, 430075, China
Corresponding author:Duan, K.(kl.duan@tom.com)
Source title:Optics Communications
Abbreviated source title:Opt Commun
Volume:283
Issue:11
Issue date:June 1, 2010
Publication year:2010
Pages:2390-2393
Language:English
ISSN:00304018
CODEN:OPCOB8
Document type:Journal article (JA)
Publisher:Elsevier, P.O. Box 211, Amsterdam, 1000 AE, Netherlands
Abstract:By using a novel mutual injection technique, phase-locking and coherent combining of two high-power all-fiber lasers are realized and experimentally demonstrated. Steady interference strips with high visibility of 46% are observed. The coherent combined 407 W CW output power with a power-combining efficiency of up to 98% is obtained. The laser array works well with excellent stability. In the long time of high-power operation no thermal distortions or damages are observed. The proposed technique can be used to further scale up the coherent combined output power of high-power fiber lasers. © 2010 Elsevier B.V. All rights reserved.
Number of references:23
Main heading:Fiber lasers
Controlled terms:Fibers
Uncontrolled terms:All-fiber lasers - Coherent combining - High-power - Mutual injection - Phase-locking
Classification code:741.1.2 Fiber Optics - 744.4 Solid State Lasers - 812 Ceramics, Refractories and Glass - 817 Plastics and Other Polymers: Products and Applications - 819.4 Fiber Products
DOI:10.1016/j.optcom.2010.02.004
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 177>
Accession number:20113014173340
Title:A single-channel fiber optic rotary joint on the basis of TEC fiber collimators
Authors:Mi, Lei (1); Yao, Sheng-Li (1); Sun, Chuan-Dong (1); Sun, Bo (3); Zhang, Hong-Ju (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 Science, Beijing 100039, China; (3) Femto Technology (Xi'an) Co. LTO, Xi'an 710119, China
Corresponding author:Mi, L.
Source title:IET Conference Publications
Abbreviated source title:IET Conf Publ
Volume:2010
Issue:574 CP
Monograph title:9th International Conference on Optical Communications and Networks, ICOCN 2010
Issue date:2010
Publication year:2010
Pages:437-440
Language:English
ISBN-13:9781849193146
Document type:Conference article (CA)
Conference name:9th International Conference on Optical Communications and Networks, ICOCN 2010
Conference date:October 24, 2010 - October 27, 2010
Conference location:Nanjing, China
Conference code:84932
Publisher:Institution of Engineering and Technology, Six Hills Way, Stevenage, SG1 2AY, United Kingdom
Abstract:This article describes a single-channel single-mode fiber optic rotary joint for optical data transmission based on well designed TEC fiber collimator. The insertion loss of a fiber optic rotary joint depends on the mechanical misalignments of the fiber collimator. Analysis of the characteristics of TEC fiber and TEC fiber collimator coupling characteristics. Using TEC fiber collimator can reduce the loss of angle tilt misalignment. We fabricated single-channel fiber optic rotary joint which insert loss below 1.27dB. We tested fiber-optic rotary joint by temperature shock from range of - 40 °C up to + 85 °C, our products the average variation of insertion loss is 0.22dB.
Number of references:8
Main heading:Fiber optic networks
Controlled terms:Alignment - Fiber optics - Fibers - Light transmission - Optical collimators - Optical communication - Photonics - Single mode fibers
Uncontrolled terms:Coupling characteristic - Fiber collimators - Fiber optic rotary joints - Fiber optical rotary joint - Insert loss - Optical data transmission - Rotary joint - Single-channel - Single-mode fiber optics - TEC fiber - TEC fiber collimator
Classification code:601.1 Mechanical Devices - 717.1 Optical Communication Systems - 741 Light, Optics and Optical Devices - 812 Ceramics, Refractories and Glass - 817 Plastics and Other Polymers: Products and Applications
DOI:10.1049/cp.2010.1245
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 178>
Accession number:20103113113361
Title:Discriminative orthogonal neighborhood-preserving projections for classification
Authors:Zhang, Tianhao (1); Huang, Kaiqi (2); Li, Xuelong (3); Yang, Jie (1); Tao, Dacheng (4)
Author affiliation:(1) Institute of Image Processing and Pattern Recognition, Shanghai Jiao Tong University, Shanghai 200240, China; (2) National Laboratory of Pattern Recognition, Chinese Academy of Sciences, Beijing 100080, 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; (4) School of Computer Engineering, Nanyang Technological University, Singapore 639798, Singapore; (5) University of London, WC1E 7HX London, United Kingdom; (6) Xidian University, Xi'an 710071, China; (7) Wuhan University, Wuhan 430070, China
Corresponding author:Zhang, T.(z.tianhao@gmail.com)
Source title:IEEE Transactions on Systems, Man, and Cybernetics, Part B: Cybernetics
Abbreviated source title:IEEE Trans Syst Man Cybern Part B Cybern
Volume:40
Issue:1
Issue date:February 2010
Publication year:2010
Pages:253-263
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:Orthogonal neighborhood-preserving projection (ONPP) is a recently developed orthogonal linear algorithm for overcoming the out-of-sample problem existing in the well-known manifold learning algorithm, i.e., locally linear embedding. It has been shown that ONPP is a strong analyzer of high-dimensional data. However, when applied to classification problems in a supervised setting, ONPP only focuses on the intraclass geometrical information while ignores the interaction of samples from different classes. To enhance the performance of ONPP in classification, a new algorithm termed discriminative ONPP (DONPP) is proposed in this paper. DONPP 1) takes into account both intraclass and interclass geometries; 2) considers the neighborhood information of interclass relationships; and 3) follows the orthogonality property of ONPP. Furthermore, DONPP is extended to the semisupervised case, i.e., semisupervised DONPP (SDONPP). This uses unlabeled samples to improve the classification accuracy of the original DONPP. Empirical studies demonstrate the effectiveness of both DONPP and SDONPP. © 2009 IEEE.
Number of references:35
Main heading:Learning algorithms
Controlled terms:Alignment
Uncontrolled terms:Classification - Classification accuracy - Dimensionality reduction - Empirical studies - Geometrical informations - High dimensional data - Linear algorithms - Locally linear embedding - Manifold learning algorithm - Neighborhood information - Orthogonality properties - Semi-supervised - Unlabeled samples
Classification code:601.1 Mechanical Devices - 603.1 Machine Tools, General - 723 Computer Software, Data Handling and Applications
DOI:10.1109/TSMCB.2009.2027473
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 179>
Accession number:20110213560531
Title:An analytical investigation of excitonic absorption in terahertz-driven quantum wells
Authors:Zhang, Tong-Yi (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, No. 17 Xinxi Road, Xi'an, China
Corresponding author:Zhang, T.-Y.(tyzhang@opt.ac.cn)
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:7854
Monograph title:Infrared, Millimeter Wave, and Terahertz Technologies
Issue date:2010
Publication year:2010
Article number:78540I
Language:English
ISSN:0277786X
CODEN:PSISDG
ISBN-13:9780819483843
Document type:Conference article (CA)
Conference name:Infrared, Millimeter Wave, and Terahertz Technologies
Conference date:October 18, 2010 - October 20, 2010
Conference location:Beijing, China
Conference code:83318
Sponsor:The Society of Photo-Optical Instrumentation Engineers (SPIE); Chinese Optical Society (COS)
Publisher:SPIE, P.O. Box 10, Bellingham, WA 98227-0010, United States
Abstract:An analytical solution of the optical susceptibility of quantum wells driven by a terahertz (THz) field is achieved based on the density-matrix formalism. A simplified three-level model is adopted for the quantum well structures, with the levels coupled by a near-infrared (NIR) and a THz field. The equation of motion for the polarization is derived from Liouville's equation for the density matrix. Using Floquet's theorem, and under the rotating-wave approximation with respect to the NIR probe field, analytical expression for the optical susceptibility of the driven quantum wells is obtained. Different features rising induced by the driving THz field in the absorption spectrum of the NIR probe are discussed for the THz field near resonance and out of resonance of the intraexcitonic transition. This analytical investigation of the susceptibility of the THz-field-driven quantum wells is much useful for clearly identifying the physical principles obscured in the full numerical calculations. © 2010 Copyright SPIE - The International Society for Optical Engineering.
Number of references:28
Main heading:Terahertz waves
Controlled terms:Absorption - Absorption spectroscopy - Equations of motion - Infrared devices - Matrix algebra - Millimeter wave devices - Millimeter waves - Probes - Resonance - Semiconductor device structures - Semiconductor quantum wells - Stark effect
Uncontrolled terms:AC Stark effect - Analytical expressions - Analytical investigations - Analytical solutions - Density matrix - Equation of motion - Excitonic absorption - Floquet's theorem - Liouville's equation - Near infra red - Numerical calculation - Optical susceptibility - Physical principles - Probe field - Quantum well - Quantum well structures - Rotating wave approximations - Tera Hertz - Three-level models - THz fields - THz-driven
Classification code:801 Chemistry - 921.1 Algebra - 921.2 Calculus - 944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments - 931.2 Physical Properties of Gases, Liquids and Solids - 942 Electric and Electronic Measuring Instruments - 943 Mechanical and Miscellaneous Measuring Instruments - 941 Acoustical and Optical Measuring Instruments - 741.3 Optical Devices and Systems - 741 Light, Optics and Optical Devices - 701 Electricity and Magnetism - 701.1 Electricity: Basic Concepts and Phenomena - 711 Electromagnetic Waves - 714 Electronic Components and Tubes - 714.2 Semiconductor Devices and Integrated Circuits - 715 Electronic Equipment, General Purpose and Industrial
DOI:10.1117/12.868775
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 180>
Accession number:20104713408860
Title:Simulation and optimization of spatial light modulation of twisted-nematic liquid crystal display
Authors:Ma, Baiheng (1); Yao, Baoli (1); Yan, Shaohui (1); Peng, Fei (1); Min, Junwei (1); Lei, Ming (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 the 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:8
Issue:10
Issue date:October 2010
Publication year:2010
Pages:960-963
Language:English
ISSN:16717694
Document type:Journal article (JA)
Publisher:Science Press, 18,Shuangqing Street,Haidian, Beijing, 100085, China
Abstract:The approaches to obtaining desired intensity or phase modulation by twisted-nematic liquid crystal dis- play (TN-LCD) have been extensively studied based on the knowledge of the LCD's internal structure parameters. Generally, the TN-LCD placed between two linear polarizers (P) produces coupled inten- sity and phase modulation. To obtain the commonly used phase-only modulation, quarter wave plates (QWPs) are often used in front of and/or behind the LCD. Here we present a method to optimize the optical modulation properties of the TN-LCD to obtain phase-only modulation in the configuration of P-QWP-LCD-QWP-P each with proper orientation. Our method is based on the macroscopical Jones matrix descriptions for the LCD, the QWPs, and the linear polarizers. Through Jones matrix calculations, the orientations of the polarizers and QWPs can be optimized to satisfy differently desired modulation demands. In contrast to the traditional method, which requires knowledge of the LCD's internal structure parameters, our method simplified the complicated theory analysis and can work in the absence of infor- mation on the LCD's internal structure parameters, which are usually not available for the commercial products. © 2010 Chinese Optics Letters.
Number of references:20
Main heading:Liquid crystal displays
Controlled terms:Crystal structure - Light modulation - Liquid crystals - Liquids - Nematic liquid crystals - Optical instruments - Optical properties - Optimization - Phase modulation
Uncontrolled terms:Commercial products - Commonly used - Internal structure - Jones matrix - Linear polarizer - Optical modulation - Phase-only modulation - Quarter wave-plate - Simulation and optimization - Spatial light modulation - Twisted nematic
Classification code:716 Telecommunication; Radar, Radio and Television - 741.1 Light/Optics - 741.3 Optical Devices and Systems - 801.4 Physical Chemistry - 921.5 Optimization Techniques - 931.2 Physical Properties of Gases, Liquids and Solids
DOI:10.3788/COL20100810.0960
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 181>
Accession number:20110113550845
Title:Narrow linewidth and widely tunable operation of Tm-doped fiber laser with volume Bragg gratings
Authors:Shen, Deyuan (1); Wang, Yishan (1); Zhao, Wei (1); Long, Jingyu (1); Li, Cheng (1); Duan, Kailiang (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:Zhao, W.
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:7843
Monograph title:High-Power Lasers and Applications V
Issue date:2010
Publication year:2010
Article number:784302
Language:English
ISSN:0277786X
CODEN:PSISDG
ISBN-13:9780819483737
Document type:Conference article (CA)
Conference name:High-Power Lasers and Applications V
Conference date:October 18, 2010 - October 19, 2010
Conference location:Beijing, China
Conference code:83313
Sponsor:The Society of Photo-Optical Instrumentation Engineers (SPIE); Chinese Optical Society (COS)
Publisher:SPIE, P.O. Box 10, Bellingham, WA 98227-0010, United States
Abstract:High power and widely tunable operation of Tm-doped silica fiber laser around 2 μm has been demonstrated using volume Bragg grating as the wavelength selection and spectrum narrowing element. The operating wavelength was continuously tunable from 1930 to 1821 nm, with > 52 W output power over a tuning range of 104 nm and a relatively narrow spectra width of < 15 pm. Over 60.8 W of diffraction limited (M<sup>2</sup> ∼ 1.5) CW output power was generated for 137 W of launched pump power, corresponding to a slope efficiency with respect to launched pump power of 46%. Output characteristics with a conventional replica diffraction grating for wavelength selection were also investigated as a comparison with that of using a volume Bragg grating. A maximum output power of 30.6 W at 1963 nm was generated for 79 W of launched pump power and the lasing wavelength could be tuned over 196 nm from 1859 to 2055 nm at output power levels in excess of 20 W. The bandwidth of the laser output was ∼ 0.8 nm. © 2010 Copyright SPIE - The International Society for Optical Engineering.
Number of references:14
Main heading:Fiber lasers
Controlled terms:Diffraction - Fiber Bragg gratings - Fibers - Linewidth - Pumping (laser) - Pumps - Silica
Uncontrolled terms:Diffraction limited - High-power - Laser output - Lasing wavelength - Launched pump power - Maximum output power - Narrow-line width - Operating wavelength - Output characteristics - Output power - Output power levels - Silica fiber lasers - Slope efficiencies - Tm-doped - Tm-doped fiber - Tm-doped fiber laser - Tunable operations - Tuning ranges - Volume Bragg gratings - Wavelength selection - Widely tunable
Classification code:931.3 Atomic and Molecular Physics - 817 Plastics and Other Polymers: Products and Applications - 812 Ceramics, Refractories and Glass - 744.4 Solid State Lasers - 744.1 Lasers, General - 741 Light, Optics and Optical Devices - 618.2 Pumps
DOI:10.1117/12.870061
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 182>
Accession number:20104913463904
Title:Nanosize structural modifications with polarization functions in ultrafast laser irradiated bulk fused silica
Authors:Mishchik, K. (1); Cheng, G. (1); Huo, G. (2); Burakov, I.M. (1); Mauclair, C. (1); Mermillod-Blondin, A. (3); Rosenfeld, A. (3); Ouerdane, Y. (1); Boukenter, A. (1); Parriaux, O. (1); Stoian, R. (1)
Author affiliation:(1) Laboratoire Hubert Curien, Université de Lyon, Université Jean Monnet, 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 für Nichtlineare Optik und Kurzzeitspektroskopie, 12489 Berlin, Germany
Corresponding author:Mishchik, K.(razvan.stoian@univ-st-etienne.fr)
Source title:Optics Express
Abbreviated source title:Opt. Express
Volume:18
Issue:24
Issue date:November 22, 2010
Publication year:2010
Pages:24809-24824
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:Laser-induced self-organization of regular nanoscale layered patterns in fused silica is investigated using spectroscopy and microscopy methods, revealing a high presence of stable broken oxygen bonds. Longitudinal traces are then generated by replicating static irradiation structures where the nanoscale modulation can cover partially or completely the photoinscribed traces. The resulting birefringence, the observed anisotropic light scattering properties, and the capacity to write and erase modulated patterns can be used in designing bulk polarization sensitive devices. Various laser-induced structures with optical properties combining guiding, scattering, and polarization sensitivity are reported. The attached polarization functions were evaluated as a function of the fill factor of the nanostructured domains. The polarization sensitivity allows particular light propagation and confinement properties in three dimensional structures. © 2010 Optical Society of America.
Number of references:43
Main heading:Fused silica
Controlled terms:Nanostructured materials - Optical properties - Oxygen - Polarization - Silica - Ultrafast lasers
Uncontrolled terms:Confinement properties - Fill factor - Laser induced - Laser-induced structures - Nano scale - Nano-size - Nano-structured - Oxygen bonds - Polarization functions - Polarization sensitivity - Polarization-sensitive devices - Scattering property - Self-organizations - Structural modifications - Three-dimensional structure - Ultrafast laser
Classification code:741.1 Light/Optics - 744.1 Lasers, General - 761 Nanotechnology - 804 Chemical Products Generally - 812 Ceramics, Refractories and Glass - 812.3 Glass
DOI:10.1364/OE.18.024809
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 183>
Accession number:20111213848030
Title:Light collection systems for multiple LED arrays
Authors:Peng, Chenhui (1); Li, Xiaoning (1); Xiong, Lingling (1); Zhang, Pu (1); Liu, Xingsheng (1); Wang, Jingwei (2)
Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, CAS, Xi'an, China; (2) Xi'an Focuslight Technologies Co., Ltd., Xi'an, China
Corresponding author:Peng, C.(pengchenhui@opt.ac.cn)
Source title:2010 OSA-IEEE-COS Advances in Optoelectronics and Micro/Nano-Optics, AOM 2010
Abbreviated source title:OSA-IEEE-COS Adv. Optoelectron. Micro/Nano-Opt., AOM
Monograph title:2010 OSA-IEEE-COS Advances in Optoelectronics and Micro/Nano-Optics, AOM 2010
Issue date:2010
Publication year:2010
Article number:5713510
Language:English
ISBN-13:9781424483938
Document type:Conference article (CA)
Conference name:2010 OSA-IEEE-COS Advances in Optoelectronics and Micro/Nano-Optics, AOM 2010
Conference date:December 3, 2010 - December 6, 2010
Conference location:Guangzhou, China
Conference code:84215
Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States
Abstract:Light emitting diode (LED) has numerous advantages such as long lifetime, large color gamut, small size and the absence of mercury vapor and thus there has been recognition that LED could be an alternative light source for projection display application. Due to its compact size, LED is a very attractive RGB light source for portable projectors. To improve the brightness of the projector, it is very critical to improve the light collection efficiency of the RGB LED light sources. In this work, traditional compound parabolic concentrator (CPC) was designed and its performance was studied. The CPC has a high collection efficiency, but its size is too bulky to be used in the portable projectors. Hence, a freeform collection system was designed and optimized to gain a compact size which can be used in the portable projectors. After optimization, it has a collection efficiency of 85%, slightly lower than that of the traditional CPC. But its diameter of the output aperture is 13.4 mm, 36% smaller than that of the traditional CPC and its length is 25 mm, 58% shorter than that of the traditional CPC. Meanwhile, the divergence angle of the freeform collection system is ±10 ° , which is smaller than that of the designed traditional CPC. Hence, the freeform collection system may be used as the collimator in the portable projection display application.
Number of references:10
Main heading:Light emitting diodes
Controlled terms:Concentration (process) - Display devices - Light - Mercury (metal) - Optical projectors - Optimization
Uncontrolled terms:Collection efficiency - Collection systems - Color gamuts - Compact size - Compound parabolic concentrator - Divergence angle - Freeforms - High collection efficiency - LED - LED arrays - Light collection - Light collection efficiency - Long lifetime - Mercury vapor - Projection display application - Projection displays - RGB LED - Small size
Classification code:549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals - 722.2 Computer Peripheral Equipment - 741.1 Light/Optics - 741.3 Optical Devices and Systems - 802.3 Chemical Operations - 921.5 Optimization Techniques
DOI:10.1109/AOM.2010.5713510
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 184>
Accession number:20101012758912
Title:Study of the mechanisms of spectral broadening in high power
Authors:Wang, Jingwei (1); Yuan, Zhenbang (2); Zhang, Yanxin (1); Wu, Di (3); Chen, Xu (2); Liu, Xingsheng (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) School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China; (3) Xi'an Focuslight Technologies Co., LTD, Xi'an, Shaanxi 710119, China
Corresponding author:Liu, X.(liuxs@opt.ac.cn)
Source title:Zhongguo Jiguang/Chinese Journal of Lasers
Abbreviated source title:Zhongguo Jiguang
Volume:37
Issue:1
Issue date:January 2010
Publication year:2010
Pages:92-99
Language:Chinese
ISSN:02587025
CODEN:ZHJIDO
Document type:Journal article (JA)
Publisher:Science Press, 18,Shuangqing Street,Haidian, Beijing, 100085, China
Abstract:High power semiconductor laser arrays have found increasing applications in pumping of solid state laser systems. Spectral width is one of the key factors of laser array products. Increasing the spectral accuracy by reducing the spectral width of the pump diode can improve the laser system compactness, efficiency, power, and beam quality while reducing thermal management cost in the system. The mechanisms of spectral broadening in high power semiconductor laser arrays are studied for the first time by numerical simulation and by means of spatial spectral mapping and scan acoustic microscope(SAM). The broadening of a laser spectrum is often the result of the appearance of a shoulder/tail on either or both sides of the spectrum or sometimes a double-peak or even multiple peaks occurs. It is concluded that the shoulder/tail appeared on the longer-wavelength side of the spectrum is normally caused by thermal effect while the shoulder/tail on the shorter-wavelength side of the spectrum is usually the result of thermal-stress built in the laser array. Based on the mechanism of spectral broadening in high power semiconductor laser arrays, the strategy of controlling spectral broadening is presented in this paper.
Number of references:6
Main heading:Semiconductor lasers
Controlled terms:Chip scale packages - Computer simulation - Cost reduction - High power lasers - Intermetallics - Lasers - Photomapping - Power electronics - Pumping (laser) - Pumps - Solid state lasers
Uncontrolled terms:Double peak - High power semiconductor laser - High-power - Key factors - Laser arrays - Laser spectra - Laser systems - Multiple-peak - Numerical simulation - Pump diodes - Solid-state laser systems - Spectral accuracy - Spectral broadening - Spectral mappings - Spectral widths - Thermal management
Classification code:912.2 Management - 723.5 Computer Applications - 742.1 Photography - 744.1 Lasers, General - 744.4 Solid State Lasers - 744.4.1 Semiconductor Lasers - 911.2 Industrial Economics - 715.2 Industrial Electronic Equipment - 713.5 Electronic Circuits Other Than Amplifiers, Oscillators, Modulators, Limiters, Discriminators or Mixers - 712.1 Semiconducting Materials - 618.2 Pumps - 531.1 Metallurgy - 405.3 Surveying - 714.2 Semiconductor Devices and Integrated Circuits
DOI:10.3788/CJL20103701.0092
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 185>
Accession number:20111013721392
Title:Terahertz rate pulse train generation using nonlinear effects in nanoscale silicon waveguides
Authors:Wu, Jian-Wei (1); Lee, Hyun-Shik (2); Lee, El-Hang (2)
Author affiliation:(1) College of Science, Hohai University, Nanjing 210098, 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) State Key Laboratory of Transient Optics and Photonics, Chinese Academy of Sciences, Xi'an 710119, China
Corresponding author:Wu, J.-W.(jwwu@hhu.edu.cn)
Source title:2010 International Conference on Multimedia Technology, ICMT 2010
Abbreviated source title:Int. Conf. Multimedia Technol., ICMT
Monograph title:2010 International Conference on Multimedia Technology, ICMT 2010
Issue date:2010
Publication year:2010
Article number:5629793
Language:English
ISBN-13:9781424478743
Document type:Conference article (CA)
Conference name:2010 International Conference on Multimedia Technology, ICMT 2010
Conference date:October 29, 2010 - October 31, 2010
Conference location:Ningbo, China
Conference code:83981
Sponsor:IEEE Nanjing Section GRSS Chapter; Southwest Petroleum University of China; College of Computer and Information of Hohai University
Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States
Abstract:We report on the new method of generating an ultra-high rate pulse train at a repetition rate of 2-THz by utilizing the combined effects of nonlinear frequency chirp and group velocity dispersion in nanoscale silicon on insulator (SOI) optical waveguides. As two optical beams modulated by the initial sinusoidal modulation elements propagate through the SOI, they are reshaped into a pulse train, in which the repetition rate can be predetermined by the modulation frequency. At the end of a 2-mm long silicon waveguide, the full width of half maximum (FWHM) of the output pulse can be compressed to about 62-fs, leading to THz pulse repetition rate. ©2010 IEEE.
Number of references:7
Main heading:Pulse generators
Controlled terms:Nanostructured materials - Nonlinear analysis - Optical devices - Optical instruments - Photonic integration technology - Pulse repetition rate - Q switched lasers - Silicon on insulator technology - Technology - Waveguides
Uncontrolled terms:Combined effect - Full width of half maximum - Integrated optical devices - Modulation frequencies - Nano scale - Nonlinear effect - Nonlinear frequency - Nonlinear interactions - Optical beams - Output pulse - Pulse train - Pulse-train generation - Repetition rate - Silicon waveguide - Silicon-on-insulators - Sinusoidal modulation - Tera Hertz - THz pulse - Ultra-high
Classification code:901 Engineering Profession - 761 Nanotechnology - 744.1 Lasers, General - 921 Mathematics - 741.3 Optical Devices and Systems - 714.2 Semiconductor Devices and Integrated Circuits - 713.4 Pulse Circuits - 714.3 Waveguides
DOI:10.1109/ICMULT.2010.5629793
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 186>
Accession number:20102913089354
Title:L1-norm-based 2DPCA
Authors:Li, Xuelong (1); Pang, Yanwei (2); Yuan, Yuan (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 Electronic Information Engineering, Tianjin University, Tianjin 300072, China; (3) School of Engineering and Applied Science, Aston University, Birmingham B4 7ET, United Kingdom
Corresponding author:Li, X.(xuelong_li@opt.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:40
Issue:4
Issue date:August 2010
Publication year:2010
Pages:1170-1175
Article number:5382548
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 this paper, we first present a simple but effective L1-norm-based two-dimensional principal component analysis (2DPCA). Traditional L2-norm-based least squares criterion is sensitive to outliers, while the newly proposed L1-norm 2DPCA is robust. Experimental results demonstrate its advantages. © 2006 IEEE.
Number of references:25
Main heading:Principal component analysis
Controlled terms:Two dimensional
Uncontrolled terms:L1 norm - L2-norm - Least squares criterion - Two dimensional principal component analysis (2DPCA)
Classification code:723.5 Computer Applications - 902.1 Engineering Graphics - 922.2 Mathematical Statistics
DOI:10.1109/TSMCB.2009.2035629
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 187>
Accession number:20102212974504
Title:Vibration and temperature insensitive fiber-optic current transducer
Authors:Mu, Jie (1); Wang, Jia (1); Zhao, Wei (1); Xu, Jin-Tao (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:Mu, J.(mujie0328@gmail.com)
Source title:Gaodianya Jishu/High Voltage Engineering
Abbreviated source title:Gaodianya Jishu
Volume:36
Issue:4
Issue date:April 2010
Publication year:2010
Pages:980-986
Language:Chinese
ISSN:10036520
CODEN:GAJIE5
Document type:Journal article (JA)
Publisher:Science Press, 18,Shuangqing Street,Haidian, Beijing, 100085, China
Abstract:The insensitivity to vibration and the temperature drift are two defects of the fiber-optic current transducer based on the Faraday effect, which restrict its harsh environment engineering applications. Therefore, a new scheme of fiber-optic current transducer insensible to vibration and temperature is designed and verified. Its sensing fiber coil is fabricated by the bifilar winding technique, which consists of one half-wave plate embedded in the middle of the sensing optical fiber and one quarter-wave plate rotated by 90 degrees in its input port. Theoretical analysis with Jones matrix shows that the new transducer is insensitive to vibration and temperature. Experimental results using low-frequency vibration test table and low/high temperature chamber suggest that, this new transducer can steadily measure the current from 100 to 1000 A under strong mechanical vibration at accelerations up to 20 g and frequencies from 10 to 400 Hz, with good linearity and a relative deviation of no higher than ± 0.2%. Furthermore, its temperature drift is eliminated in the temperature range of -50°C~50°C. This configuration, with simple structure, high accuracy and immunity to circumstance, is a new technique for fiber-optic current transducers design.
Number of references:20
Main heading:Vibration analysis
Controlled terms:Faraday effect - Fiber optics - Fibers - Light measurement - Magnetic field effects - Optical fiber fabrication - Optical fibers - Plates (structural components) - Transducers - Winding
Uncontrolled terms:Bifilar winding - Jones matrix - Sagnac effect - Vibration sensitivity - Waveplates
Classification code:943.2 Mechanical Variables Measurements - 752.1 Acoustic Devices - 812 Ceramics, Refractories and Glass - 812.3 Glass - 816.1 Processing of Plastics and Other Polymers - 817 Plastics and Other Polymers: Products and Applications - 819.3 Fiber Chemistry and Processing - 819.4 Fiber Products - 941.4 Optical Variables Measurements - 751.2 Acoustic Properties of Materials - 408.2 Structural Members and Shapes - 691.2 Materials Handling Methods - 701.1 Electricity: Basic Concepts and Phenomena - 741.1.2 Fiber Optics - 701.2 Magnetism: Basic Concepts and Phenomena - 715 Electronic Equipment, General Purpose and Industrial - 732.2 Control Instrumentation - 704 Electric Components and Equipment
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 188>
Accession number:20103513189041
Title:One-spot and multispot processing for supermode stabilization
Authors:Cai, Ran (1); Xue, Cai (3); Zeng, Lan (3); Chen, Jianguo (2); Cai, Guishun (3); Hu, Shijie (4); Cao, Jie (5); Rong, Jian (1); Dong, Jihui (6)
Author affiliation:(1) Institute of Applied Physics, University of Electronic Science and Technology of China, Chengdu 610054, China; (2) Department of Optoelectronics, Sichuan University, Chengdu 610064, China; (3) Institute of Electronic Engineering, China Academy of Engineering Physics, Mianyang 621900, China; (4) Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu 610209, China; (5) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (6) Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
Corresponding author:Cai, R.(rcemailbox@gmail.com)
Source title:Applied Optics
Abbreviated source title:Appl. Opt.
Volume:49
Issue:14
Issue date:May 10, 2010
Publication year:2010
Pages:2703-2711
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:Through employing an external mirror that is tilted by an angle β = λ/2d in the external cavity, whose round-trip cavity length is one-half a Talbot distance, a laser diode array (LDA) is made to oscillate with only an in-phase supermode. This makes the far-field distribution of the LDA have a central-single-lobe far-field pattern, and it also makes the output from the LDA be nearly diffraction limited. However, if the phase-locked output energy from the LDA is extremely high, then the thermal radiation from the output deforms the external mirror stochastically. This makes the tilt angle (β) mismatched to the in-phase supermode, which results in undesirable supermode oscillations; so the far-field distribution of the LDA is no longer a central-single-lobe far-field pattern. Naturally, the intensity of the output from the LDA is attenuated, and the divergence loss is worsened. Therefore, suitable measures must be taken to guarantee the quality of the phase-locked output from the LDA. Accordingly, after analysis of the deformation of the external mirror, a novel one-spot and multispot processing (OMP) technology is developed. With special sensors, deformation of the external mirror is ascertained as a function of time. Then the deformation is compensated by appropriate equipment, which counteracts any bad influence on the angle β. The experiment significantly demonstrates that only the in-phase supermode oscillated in an extremely high-energy LDA after the implementation of OMP, allowing such lasers to satisfy the requirements of high-quality laser applications. © 2010 Optical Society of America.
Number of references:24
Main heading:Mirrors
Controlled terms:Deformation - High energy lasers - Laser applications
Uncontrolled terms:Cavity length - Diffraction limited - External cavity - External mirrors - Far field distribution - Far-field patterns - Function of time - High energy - High quality - In-phase supermode - Laser diode arrays - Output energy - Supermodes - Talbot distance - Thermal radiations - Tilt angle
Classification code:421 Strength of Building Materials; Mechanical Properties - 422 Strength of Building Materials; Test Equipment and Methods - 741.3 Optical Devices and Systems - 744.1 Lasers, General - 744.9 Laser Applications
DOI:10.1364/AO.49.002703
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 189>
Accession number:20101312808471
Title:An energy-efficient environment monitoring scheme for wireless sensor networks based on contour mapping
Authors:An, Yuan (1); Sun, Limin (3); Ma, Caiwen (1); Zhu, Hongsong (3); Fang, Weiwei (4)
Author affiliation:(1) Optical Directional and Pointing Technique Research Center, Xi'an Institute of Optics Precision Mechanics of Chinese Academy of Sciences, Xi'an 710068, China; (2) School of Graduate, Chinese Academy of Sciences, Beijing 100190, China; (3) State Key Laboratory of Information Security, Institute of Software of Chinese Academy of Sciences, Beijing 100190, China; (4) Sino-German Joint Software Institute, Beihang University, Beijing 100083, China
Corresponding author:Sun, L.
Source title:Hsi-An Chiao Tung Ta Hsueh/Journal of Xi'an Jiaotong University
Abbreviated source title:Hsi An Chiao Tung Ta Hsueh
Volume:44
Issue:2
Issue date:February 2010
Publication year:2010
Pages:56-60+66
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 contour mapping scheme based on Bezier curves for wireless sensor networks, SENS-T, is presented to solve the problem of energy limits in using wireless sensor networks to monitor environments. The scheme uses contours to represent the distribution of environment attribute value, that is, the contour is divided into pieces of Bezier curves, the shape and the position information of each Bezier curve is collected to one deputy node and is reported to the sink; and the sink uses the nodes coordinates and the received curve information to rebuild the contour curve. The number of report nodes is determined by the number of Bezier curve segments so that the traditional method that reports the information of all nodes on the contour is reformed. Simulation results show that the energy and bandwidth of network are saved efficiently by SENS-T, and a comparison with the traditional method at the same accuracy of counter mapping shows that the SENS-T saves approximately 45% network energy.
Number of references:6
Main heading:Wireless sensor networks
Controlled terms:Computer simulation - Energy conservation - Mapping - Sensor networks
Uncontrolled terms:Attribute values - Bezier curve - Contour mapping - Energy efficient - Energy limit - Energy saving - Environment monitoring - Position information - Simulation result
Classification code:902.1 Engineering Graphics - 732 Control Devices - 731.1 Control Systems - 723.5 Computer Applications - 722.4 Digital Computers and Systems - 722.3 Data Communication, Equipment and Techniques - 716.3 Radio Systems and Equipment - 525.2 Energy Conservation - 405.3 Surveying
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 190>
Accession number:20102413003957
Title:A new package structure for high power single emitter semiconductor laser and performance analysis
Authors:Zhang, Yanxin (1); Wang, Jingwei (1); Wu, Di (2); Yang, Kai (2); Ma, Youlong (3); Liu, Xingsheng (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) Xi'an Focuslight Optoelectronics Technology Co., Ltd., Xi'an, Shaanxi 710119, China; (3) Department of Physics, Shanghai Jiaotong University, Shanghai 200240, China
Corresponding author:Liu, X.(liuxs@opt.ac.cn)
Source title:Zhongguo Jiguang/Chinese Journal of Lasers
Abbreviated source title:Zhongguo Jiguang
Volume:37
Issue:5
Issue date:May 2010
Publication year:2010
Pages:1186-1191
Language:Chinese
ISSN:02587025
CODEN:ZHJIDO
Document type:Journal article (JA)
Publisher:Science Press, 18,Shuangqing Street,Haidian, Beijing, 100085, China
Abstract:A new high power single emitter laser (F-mount) is reported. This package structure is different from the commercial products structure with C-mount, and it has an advantage of higher thermal conduction. The maximum output optical power of 13.3 W through this package structure is obtained under the testing condition of continuous waves (CW) at 20°C and the laser can still work well. There was no catastrophic mirror-damage (COMD) occurred on it. The maximum output optical power of 30.8 W is obtained under the testing condition of quasi-continuous wave (QCW). Moreover, the following parameters are calculated with coefficient of wavelength-shift versus temperature of 0.278 nm/°C, thermal resistance of 3.18 K/W, the characteristic temperature of 135 K at the threshold current at room temperature, the characteristic temperature of 743 K for the differential efficiency at room temperature. It has lower thermal resistance and better heat sink capability and higher output power than commercial single emitter laser packaged with C-mount structure.
Number of references:10
Main heading:Semiconductor lasers
Controlled terms:Heat resistance - Lasers - Mountings
Uncontrolled terms:Characteristic temperature - Commercial products - Continuous Wave - Continuous waves - Differential efficiency - Heat sink capability - High power - Maximum output - New high - Optical power - Output power - Package structure - Performance analysis - Room temperature - Single emitter - Single emitter lasers - Testing conditions - Thermal conduction - Thermal resistance - Threshold currents
Classification code:601.2 Machine Components - 712.1 Semiconducting Materials - 714.2 Semiconductor Devices and Integrated Circuits - 744.1 Lasers, General - 744.4.1 Semiconductor Lasers - 931.2 Physical Properties of Gases, Liquids and Solids
DOI:10.3788/CJL20103705.1186
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 191>
Accession number:20100612685755
Title:Optimized sinusoidal phase mask to extend the depth of field of an incoherent imaging system
Authors:Zhao, Hui (1); Li, Yingcai (1)
Author affiliation:(1) Space Optics Lab., Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, 17 Xinxi Road, Xi'an 710119, China
Corresponding author:Zhao, H.(zhaohui1981.zju@gmail.com)
Source title:Optics Letters
Abbreviated source title:Opt. Lett.
Volume:35
Issue:2
Issue date:January 15, 2010
Publication year:2010
Pages:267-269
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:Wavefront coding is a powerful technique that can be used to extend the depth of field of an incoherent imaging system. By adding a suitable phase mask to the aperture plane, the optical transfer function of a conventional imaging system can be made defocus invariant. Since 1995, when a cubic phase mask was first suggested, many kinds of phase masks have been proposed to achieve the goal of depth extension. In this Letter, a phase mask based on sinusoidal function is designed to enrich the family of phase masks. Numerical evaluation demonstrates that the proposed mask is not only less sensitive to focus errors than cubic, exponential, and modified logarithmic masks are, but it also has a smaller point-spread-function shifting effect. © 2010 Optical Society of America.
Number of references:13
Main heading:Optical design
Controlled terms:Exponential functions - Imaging systems - Optical transfer function - Optoelectronic devices
Uncontrolled terms:Aperture plane - Conventional imaging - Cubic phase mask - Defocus - Depth of field - Incoherent imaging - Numerical evaluations - Phase masks - Sinusoidal functions - Wavefront coding
Classification code:746 Imaging Techniques - 741.3 Optical Devices and Systems - 741.1 Light/Optics - 921 Mathematics - 741 Light, Optics and Optical Devices - 717.2 Optical Communication Equipment - 714.2 Semiconductor Devices and Integrated Circuits - 723.2 Data Processing and Image Processing
DOI:10.1364/OL.35.000267
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 192>
Accession number:20102713063577
Title:An all fiber laser for distributed optical fiber sensor
Authors:Gao, Cunxiao (1); Zhu, Shaolan (1); Feng, Li (1); Song, Zhiyuan (1); Cao, Zongying (1); He, Haodong (1); Niu, Linquan (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:Gao, C.(cxgao@opt.ac.cn)
Source title:Zhongguo Jiguang/Chinese Journal of Lasers
Abbreviated source title:Zhongguo Jiguang
Volume:37
Issue:6
Issue date:June 2010
Publication year:2010
Pages:1501-1504
Language:Chinese
ISSN:02587025
CODEN:ZHJIDO
Document type:Journal article (JA)
Publisher:Science Press, 18,Shuangqing Street,Haidian, Beijing, 100085, China
Abstract:An all fiber laser which is suitable for distributed optical fiber sensor is reported. The laser is based on the technique of master-oscillator-power-amplifier (MOPA), whose seed laser is a laser diode and amplifier is Er<sup>3+</sup> doped fiber amplifier. The laser operates in wavelength of 1550 nm with the tunable repetition rate and the pulsewdith, and the 3 dB width is less than 0.2 nm. The maximum peak power 1.1 kW of laser pulse is obtained, and the power of amplified spontaneous emission (ASE) in the output pulse is less than 10% in all condition.
Number of references:16
Main heading:Pulsed laser applications
Controlled terms:Erbium - Fiber amplifiers - Fiber optics - Fibers - Optical fibers - Sensors
Uncontrolled terms:1550 nm - All-fiber lasers - Amplified spontaneous emissions - Distributed optical fiber sensors - Doped fiber amplifier - Er<sup>3+</sup> doped fiber amplifier - Laser diodes - Output pulse - Peak power - Repetition rate
Classification code:819.4 Fiber Products - 817 Plastics and Other Polymers: Products and Applications - 812 Ceramics, Refractories and Glass - 801 Chemistry - 744.9 Laser Applications - 744.4 Solid State Lasers - 741.1.2 Fiber Optics - 732.2 Control Instrumentation - 547.2 Rare Earth Metals
DOI:10.3788/CJL20103706.1501
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 193>
Accession number:20104313323596
Title:Optical design of the uncoaxial three-mirror system with wide field of view
Authors:Guo, Yongxiang (1); Li, Yingcai (1); Liang, Tianmei (3); Chen, Qinfang (1)
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Science, Xi'an, Shaanxi 710119, China; (2) Graduate University of Chinese Academy of Sciences, Beijing 100049, China; (3) School of Politics and Administration, Chang'an University, Xi'an, Shaanxi 710054, China
Corresponding author:Guo, Y.(gyxllr605@163.com)
Source title:Guangxue Xuebao/Acta Optica Sinica
Abbreviated source title:Guangxue Xuebao
Volume:30
Issue:9
Issue date:September 2010
Publication year:2010
Pages:2680-2683
Language:Chinese
ISSN:02532239
CODEN:GUXUDC
Document type:Journal article (JA)
Publisher:Chinese Optical Society, P.O. Box 80, Xi'an, 710068, China
Abstract:Based on the theory of off-axis three-mirror ststem, an optical system with effective focal length of 5000 mm and field of view of 5° is designed. The image qualities of this system are near diffraction limit. Some factors in practical engineering application are taken into account in course of design, so that this system is very useful in the field of space optical remote sensing.
Number of references:9
Main heading:Mirrors
Controlled terms:Curricula - Image quality - Optical design - Optical systems - Remote sensing
Uncontrolled terms:Diffraction limits - Effective focal lengths - Field of views - Mirror systems - Off-axis - Optical remote sensing - Practical engineering applications - Reflective systems - Three-mirror system - Wide field of view
Classification code:731.1 Control Systems - 741 Light, Optics and Optical Devices - 901.2 Education
DOI:10.3788/AOS20103009.2680
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 194>
Accession number:20105013489884
Title:Effects of fabrication methods on structure of porous anodic aluminum oxide films
Authors:Li, Zhanwang (1); Xia, Zhilin (1); Xue, Yiyu (3); Guo, Peitao (3); Zhao, Lixin (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, Shaanxi 710119, China; (2) School of Material Science and Engineering, Wuhan University of Technology, Wuhan, Hubei 430070, China; (3) School of Automobile Engineering, Wuhan University of Technology, Wuhan, Hubei 430070, China
Corresponding author:Li, Z.(hardyli4852@sina.com)
Source title:Zhongguo Jiguang/Chinese Journal of Lasers
Abbreviated source title:Zhongguo Jiguang
Volume:37
Issue:SUPPL. 1
Issue date:November 2010
Publication year:2010
Pages:324-329
Language:Chinese
ISSN:02587025
CODEN:ZHJIDO
Document type:Journal article (JA)
Publisher:Science Press, 18,Shuangqing Street,Haidian, Beijing, 100085, China
Abstract:Highly ordered porous anodic alumina(PAA) films are fabricated with the sulfuric and oxalic acid as electrolyte and by the two-step anodization method. The crystal structure of aluminum foil before and after annealing process is examined with X-ray diffraction(XRD). Field-emission scanning electron microscope(FE-SEM) and atom force microscope(AFM) are used to observe the surface and cross morphology of PAA films. The pore diameters(20-100 nm), pore distances (50-150 nm), depths(0.2-70 μm) and densities 10<sup>9</sup>-10<sup>12</sup> /cm<sup>2</sup> can be well controlled. The forming process and mechanism of PAA film are discussed. The effects of aluminium pre-treatments, the electrolytes type, anodizing voltages and electrolyte concentrations on PAA film's stractures are analyzed.
Number of references:21
Main heading:Oxide films
Controlled terms:Alumina - Aluminum - Aluminum foil - Anodic oxidation - Crystal structure - Electrolytes - Laser damage - Organic acids - Scanning electron microscopy - Sulfuric acid - Thin films - X ray diffraction
Uncontrolled terms:AFM - Annealing process - Anodization method - Anodizing voltage - Before and after - Electrolyte concentration - Fabrication method - Field emission scanning electron microscopes - Forming process - Oxalic Acid - Pore diameters - Porous anodic alumina films - Porous anodic aluminum oxide films - Pre-treatments - Self-organize - Two-step oxidation
Classification code:931.3 Atomic and Molecular Physics - 804 Chemical Products Generally - 803 Chemical Agents and Basic Industrial Chemicals - 802.2 Chemical Reactions - 801.4 Physical Chemistry - 741.1 Light/Optics - 714.2 Semiconductor Devices and Integrated Circuits - 712.1.2 Compound Semiconducting Materials - 702 Electric Batteries and Fuel Cells - 541.1 Aluminum - 461.2 Biological Materials and Tissue Engineering
DOI:10.3788/CJL201037s1.0324
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 195>
Accession number:20105113512309
Title:Design of VISAR optical system for Shen-Guang-III prototype
Authors:Yan, Ya-Dong (1); Zhang, Fa-Quan (2); He, Jun-Hua (1); Qi, Wen-Bo (1)
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (2) College of Information and Communication Engineering, Guilin Institute of Electronic Technology, Guilin 541004, China
Corresponding author:Yan, Y.-D.(yyd@opt.ac.cn)
Source title:Guangxue Jingmi Gongcheng/Optics and Precision Engineering
Abbreviated source title:Guangxue Jingmi Gongcheng
Volume:18
Issue:11
Issue date:November 2010
Publication year:2010
Pages:2355-2361
Language:Chinese
ISSN:1004924X
CODEN:GJGOF4
Document type:Journal article (JA)
Publisher:Chinese Academy of Sciences, 140 Renmin Street, Changchun, 130022, China
Abstract:To establish a Velocity Interferometer System for Any Reflector(VISAR) for the shock velocity measurement based on a laser Doppler shift effect, an optical system with a bandwidth of 0.2 nm was designed by using the 532 nm laser illumination. By choosing advisable materials, the fused silica was used in the optical system to improve the radiation resistance. Then, the second harmonics of the drive lasers and other stray lights are filtered by band-pass filters and laser line filters. To simplify the system assembly, the modularized design method and a optical gemel hinge were taken to compose models. Furthermore, the 532 nm laser was used for initially adjustment and the white light was used for accurately adjustment to implement the optical path difference to the zero. The proposed system show its total path length is 6.3 m, field of view is φ1.0 mm, and magnifications are 5× and 10×. A static experiment was undertaken, which can offer straight fringes and can give a static contrast above 0.67 and a resolution of 5.3 um. Moreover, a dynamic experiment of the system was carried out on the Shen-Guang laser-III facility successfully.
Number of references:13
Main heading:Optical systems
Controlled terms:Bandpass filters - Design - Doppler effect - Fused silica - Interferometers - Reflection - Silica - Systems analysis - Velocity - Velocity measurement
Uncontrolled terms:532 nm laser - Doppler shifts - Dynamic experiment - Field of views - Laser doppler - Laser-line filters - Modularized design - Optical path difference - Optical system design - Radiation resistance - Second harmonics - Static experiments - System assembly - Total path length - Velocity Interferometer System for Any Reflector(VISAR) - Velocity interferometer system for any reflectors - White light
Classification code:943.3 Special Purpose Instruments - 941.3 Optical Instruments - 931.1 Mechanics - 812.3 Glass - 812 Ceramics, Refractories and Glass - 961 Systems Science - 741.3 Optical Devices and Systems - 711.1 Electromagnetic Waves in Different Media - 711 Electromagnetic Waves - 703.2 Electric Filters - 408 Structural Design - 741.1 Light/Optics
DOI:10.3788/OPE.20101811.2355
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 196>
Accession number:20102112958549
Title:Reserch on the automatic stitching of panorama camera image based on system similarity matching principle
Authors:He, Jianwei (1); Yang, Jianfeng (1); Xue, Bin (1); Chen, Xiao (1); Yan, Peipei (1)
Author affiliation:(1) Space Optical Technology Research Department, 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:He, J.(Jewell.he@googlemail.com)
Source title:Guangxue Xuebao/Acta Optica Sinica
Abbreviated source title:Guangxue Xuebao
Volume:30
Issue:4
Issue date:April 2010
Publication year:2010
Pages:989-993
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 image stitching based on feature point is not only invulnerable to the light, rotation and other factors, but also helpful to increase efficiency. It has become one of the most attended methods. Scale invariant feature transform (SIFT) is a better coner extraction algorithm, but there are still some problems in the matching step. A new matching principle based on system similarity theory was proposed, and then it was compared with the traditional matching principle. The problems with tradtional matching principle was pointed out, and also the precision and speed of the new principle was tested , and the reason why the new principle get higher precision was analysed. By the new principle the matching features were detected successfully. And then, the transform matrix was calculated by the progressive sample consistency algorithm. Further more, it was optimized by the Levenberg-Marquardt (L-M) algorithm, and finally automatic image stitching was realized. At last, the stiching result of panorama camera image was given, further discussion about the new matching principle was also given in the end of the paper.
Number of references:18
Main heading:Image matching
Controlled terms:Algorithms - Cameras - Feature extraction - Image processing - Imaging systems
Uncontrolled terms:Camera images - Consistency algorithms - Extraction algorithms - Feature point - Image stitching - Levenberg-Marquardt algorithm - Matching principle - Scale invariant feature transform (SIFT) - Scale invariant feature transforms - Similarity-matching - Stiching - System similarity theory - Transform matrices
Classification code:751.1 Acoustic Waves - 746 Imaging Techniques - 742.2 Photographic Equipment - 741.1 Light/Optics - 921 Mathematics - 741 Light, Optics and Optical Devices - 723.2 Data Processing and Image Processing - 723 Computer Software, Data Handling and Applications - 716 Telecommunication; Radar, Radio and Television - 723.5 Computer Applications
DOI:10.3788/AOS20103004.0989
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 197>
Accession number:20110713663516
Title:Silver nanocrystals incorporated tellurite glass for highly nonlinear fiber development
Authors:Zhou, Zhiguang (1); He, Jianli (1); Lin, Aoxiang (1); Guo, Haitao (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 (XIOPM), Chinese Academy of Sciences (CAS), Xi'an 710119, China; (2) Center for Optical Technologies, Physics Department, Lehigh University, Bethlehem, PA 18015, United States; (3) Graduate School of Chinese Academy of Sciences, Beijing 100049, China
Corresponding author:Zhou, Z.
Source title:2010 Asia Communications and Photonics Conference and Exhibition, ACP 2010
Abbreviated source title:Asia Commun. Photonics Conf. Exhib., ACP
Monograph title:2010 Asia Communications and Photonics Conference and Exhibition, ACP 2010
Issue date:2010
Publication year:2010
Pages:423-424
Article number:5682559
Language:English
ISBN-13:9781424471119
Document type:Conference article (CA)
Conference name:Asia Communications and Photonics Conference and Exhibition, ACP 2010
Conference date:December 8, 2010 - December 12, 2010
Conference location:Shanghai, China
Conference code:83769
Sponsor:Ethernet Alliance
Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States
Abstract:7.5wt% silver nanocrystals were successfully incorporated into an easily-fiberized tellurite glass with composition of 75TeO<inf>2</inf>-20ZnO- 5Na<inf>2</inf>O (mol%). Surface Plasmon resonance absorption peak was found to be centered at around 552nm as the indirect evidence of silver nanocrystals with an average radius of 2.18nm. ©2010 IEEE.
Number of references:6
Main heading:Silver
Controlled terms:Glass - Nanocrystals - Photonics - Sodium - Surface plasmon resonance - Tellurium compounds - Zinc oxide
Uncontrolled terms:Highly nonlinear fibers - Silver nanocrystals - Surface plasmon resonance absorption - Tellurite glass - ZnO
Classification code:812.3 Glass - 804.2 Inorganic Compounds - 761 Nanotechnology - 744 Lasers - 717 Optical Communication - 712 Electronic and Thermionic Materials - 711 Electromagnetic Waves - 549.1 Alkali Metals - 547.1 Precious Metals
DOI:10.1109/ACP.2010.5682559
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 198>
Accession number:20105213525831
Title:Spectrum acquisition of detonation based on CMOS
Authors:Li, Yan (1); Bai, Yonglin (3); Wang, Bo (3); Liu, Baiyu (3); Xue, Yingdong (1); Zhang, Wei (1); Gou, Yongsheng (1); Bai, Xiaohong (3); Qin, Junjun (3); Xian, Ouyang (3)
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) Graduate School, Chinese Academy of Sciences, Beijing 100039, 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:Bai, Y.(baiyonglin@opt.ac.cn)
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:7658
Monograph title:5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optoelectronic Materials and Devices for Detector, Imager, Display, and Energy Conversion Technology
Issue date:2010
Publication year:2010
Article number:76585C
Language:English
ISSN:0277786X
CODEN:PSISDG
ISBN-13:9780819480880
Document type:Conference article (CA)
Conference name:5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optoelectronic Materials and Devices for Detector, Imager, Display, and Energy Conversion Technology
Conference date:April 26, 2010 - April 29, 2010
Conference location:Dalian, China
Conference code:82920
Sponsor:The Chinese Optical Society (COS); CAS, The Institute of Optics and Electronics (IOE); The Society of Photo-Optical Instrumentation Engineers (SPIE)
Publisher:SPIE, P.O. Box 10, Bellingham, WA 98227-0010, United States
Abstract:The detection of high-speed dynamic spectrum is the main method to acquire transient information. In order to obtain the large amount spectral data in real-time during the process of detonation, a CMOS-based system with high-speed spectrum data acquisition is designed. The hardware platform of the system is based on FPGA, and the unique characteristic of CMOS image sensors in the rolling shutter model is used simultaneously. Using FPGA as the master control chip of the system, not only provides the time sequence for CIS, but also controls the storage and transmission of the spectral data. In the experiment of spectral data acquisition, the acquired information is transmitted to the host computer through the CameraLink bus. The dynamic spectral curve is obtained after the subsequent processing. The experimental results demonstrate that this system is feasible in the acquisition and storage of high-speed dynamic spectrum information during the process of detonation. © 2010 Copyright SPIE - The International Society for Optical Engineering.
Number of references:9
Main heading:Storage (materials)
Controlled terms:Detonation - Digital cameras - Energy conversion - Field programmable gate arrays (FPGA) - Flight dynamics - Image sensors - Manufacture - Materials testing - Optoelectronic devices - Pixels - Speed - Technology - Testing
Uncontrolled terms:CMOS image sensor - Control chips - FPGA - Hardware platform - High-speed - Host computers - Spectral curves - Spectral data - Time sequences - Transient information
Classification code:951 Materials Science - 694.4 Storage - 721.3 Computer Circuits - 741.3 Optical Devices and Systems - 742.2 Photographic Equipment - 901 Engineering Profession - 931.1 Mechanics - 537.1 Heat Treatment Processes - 521 Fuel Combustion and Flame Research - 423.2 Non Mechanical Properties of Building Materials: Test Methods - 423 Non Mechanical Properties and Tests of Building Materials - 422.2 Strength of Building Materials : Test Methods - 422 Strength of Building Materials; Test Equipment and Methods - 525.5 Energy Conversion Issues
DOI:10.1117/12.865534
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 199>
Accession number:20105013487623
Title:High-precision digital synchronous system in the physical diagnosis of multi-beam laser target system
Authors:Xue, Yingdong (1); Bai, Yonglin (3); Liu, Baiyu (3); Wang, Bo (3); Li, Yan (1); Ouyang, Xian (3); Gou, Yongsheng (1); Zhang, Wei (1)
Author affiliation:(1) Key Laboraty of Ultra-fast Photoeletric Diagnostics 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 100039, 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:Xue, Y.
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:7656
Issue:PART 1
Monograph title:5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment
Issue date:2010
Publication year:2010
Article number:76565T
Language:English
ISSN:0277786X
CODEN:PSISDG
ISBN-13:9780819480866
Document type:Conference article (CA)
Conference name:5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment
Conference date:April 26, 2010 - April 29, 2010
Conference location:Dalian, China
Conference code:82772
Sponsor:The Chinese Optical Society (COS); CAS, The Institute of Optics and Electronics (IOE); The Society of Photo-Optical Instrumentation Engineers (SPIE)
Publisher:SPIE, P.O. Box 10, Bellingham, WA 98227-0010, United States
Abstract:A high-precision synchronous system has been developed to control the diagnostic equipments in the multi-beam laser target experiment. In the system, both digital delay and analog delay techniques are used simultaneously to realize the high-precision time delay. By adopting the embedded intelligent chip FPGA, the resource consumption of the system is obviously reduced; the performance of the digital delay part is improved. In the analog delay part, the capacitor charging and discharging techniques are used to realize the delay resolution of 5 ps. To reduce the impact of the random trigger signals, the jitter compensation circuit is also used in the design. The high-precision time delay and strong antiinterference ability of the system are proved by the experimental results. © 2010 Copyright SPIE - The International Society for Optical Engineering.
Number of references:10
Main heading:Jitter
Controlled terms:Delay circuits - Delay control systems - Diagnosis - Equipment - Inertial confinement fusion - Manufacture - Measurement theory - Optical testing - Technology - Time delay
Uncontrolled terms:Anti-interference - Capacitor charging - Diagnostic equipment - Digital delays - Digital synchronous systems - FPGA - High-precision - jitter compensation - Multi-beam lasers - Program control - Resource consumption - Synchronous system
Classification code:922 Statistical Methods - 901 Engineering Profession - 741.3 Optical Devices and Systems - 731.1 Control Systems - 731 Automatic Control Principles and Applications - 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 - 621.2 Fusion Reactors - 537.1 Heat Treatment Processes - 461.6 Medicine and Pharmacology
DOI:10.1117/12.864668
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 200>
Accession number:20104713410198
Title:A new package structure for high power single emitter semiconductor lasers
Authors:Zhang, Yanxin (1); Wang, Jingwei (1); Peng, Chenhui (1); Li, Xiaoning (1); Xiong, Lingling (1); Liu, Xingsheng (1)
Author affiliation:(1) 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, Shaanxi 710119, China; (2) Xi'An Focuslight Technologies Co., Ltd., No. 60 Xibu Road, Xi'an, Shaanxi 710119, China
Corresponding author:Zhang, Y.(zhangyanxin@opt.ac.cn)
Source title:Proceedings - 2010 11th International Conference on Electronic Packaging Technology and High Density Packaging, ICEPT-HDP 2010
Abbreviated source title:Proc. - Int. Conf. Electron. Packag. Technol. High Density Packag., ICEPT-HDP
Monograph title:Proceedings - 2010 11th International Conference on Electronic Packaging Technology and High Density Packaging, ICEPT-HDP 2010
Issue date:2010
Publication year:2010
Pages:1346-1349
Article number:5582809
Language:English
ISBN-13:9781424481422
Document type:Conference article (CA)
Conference name:2010 11th International Conference on Electronic Packaging Technology and High Density Packaging, ICEPT-HDP 2010
Conference date:August 16, 2010 - August 19, 2010
Conference location:Xi'an, China
Conference code:82121
Sponsor:Electron. Manuf. Packag. Technol. Soc. Chin. Inst. Electron.; IEEE Compon., Packag., Manuf. Technol. Soc. (IEEE-CPMT); Xidian University
Publisher:Association for Computing Machinery, 1515 Broadway, 17th Floor, New York, NY 10036-5701, United States
Abstract:High power semiconductor lasers have found increased applications in pumping solid state or fiber laser systems for industrial, military and medical applications as well as direct material processing applications. The reliability requirement for high power semiconductor lasers has been increased in recent years and it has been proven that indium-free packaging is one of the most effective ways in improving lifetime. The performance including reliability of high power semiconductor lasers is highly depended on the package structure. We have designed a new package structure for high power single emitter semiconductor lasers which is called F-mount. In contrast to traditional single emitter package structures, the F-mount offers indium-free packaging while improving or at least not sacrificing the thermal management. The heat sink of this new structure is insulated and easy for system integration. Finite element numerical analysis was used to compare the thermal resistance between F-mount structure and traditional structure. It was found that F-mount has high power and high electrical-to-output efficiency than the traditional structure. Lifetime testing was conducted on the F-mount devices and it was found that there was no obvious degradation in power over 7000 hours. © 2010 IEEE.
Number of references:11
Main heading:Semiconductor lasers
Controlled terms:Chip scale packages - Fiber lasers - Finite element method - High power lasers - Lasers - Medical applications - Military applications - Mountings - Packaging - Power electronics - Pumping (laser) - Semiconducting indium - Solid state lasers
Uncontrolled terms:Finite element numerical analysis - High power semiconductor laser - High-power - Indium-free - Laser systems - Lifetime testing - Material processing applications - New structures - Package structure - Single emitter - System integration - Thermal management - Thermal resistance
Classification code:744.4 Solid State Lasers - 744.1 Lasers, General - 715.2 Industrial Electronic Equipment - 714.2 Semiconductor Devices and Integrated Circuits - 921.6 Numerical Methods - 712.1.1 Single Element Semiconducting Materials - 601.2 Machine Components - 461.1 Biomedical Engineering - 404.1 Military Engineering - 694.1 Packaging, General
DOI:10.1109/ICEPT.2010.5582809
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 201>
Accession number:20104713408269
Title:Tb<sup>3+</sup>/Yb<sup>3+</sup> heavily-doped tellurite glasses with efficient green light emission
Authors:Zhou, Zhiguang (1); Lin, Aoxiang (1); Guo, Haitao (1); Liu, Xueming (1); Hou, Chaoqi (1); Lu, Min (1); Wei, Wei (1); Peng, Bo (1); Zhao, Wei (1); Toulouse, Jean (2)
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) Center for Optical Technologies and Physics Department, Lehigh University, Bethlehem, PA 18015, United States; (3) Graduate School, Chinese Academy of Sciences (CAS), Beijing 100049, China
Corresponding author:Lin, A.(aoxiang.research@gmail.com)
Source title:Journal of Non-Crystalline Solids
Abbreviated source title:J Non Cryst Solids
Volume:356
Issue:50-51
Issue date:November 2010
Publication year:2010
Pages:2896-2899
Language:English
ISSN:00223093
CODEN:JNCSBJ
Document type:Journal article (JA)
Publisher:Elsevier, P.O. Box 211, Amsterdam, 1000 AE, Netherlands
Abstract:Without introducing concentration quenching phenomenon, a few wt.% of Tb<sup>3+</sup> and Yb<sup>3+</sup> ions were doped into a group of easily-fiberized tellurite glasses characterized by loose polyhedron structures and rich interstitial positions. Intense green upconversion emission from Tb<sup>3+</sup> ions centered at 539 nm due to transition <sup>5</sup>D <inf>4</inf> → <sup>7</sup>F<inf>5</inf> was observed by direct excitation of Yb<sup>3+</sup> ions with a laser diode at 976 nm. Optimizing the concentration ratio of Tb<sup>3+</sup>/Yb<sup>3+</sup>, a tellurite glass with a composition of 80TeO<inf>2</inf>-10ZnO-10Na<inf>2</inf>O (mol%) + 1.0 wt.% Tb<inf>2</inf>O<inf>3</inf> + 3.0 wt.% Yb<inf>2</inf>O<inf>3</inf> was found to present the highest green light intensity and therefore is especially suitable for efficient green fiber laser development. © 2010 Elsevier B.V. All rights reserved.
Number of references:28
Main heading:Tellurium compounds
Controlled terms:Fiber lasers - Glass - Ions - Ytterbium - Zinc oxide
Uncontrolled terms:Concentration quenching - Concentration ratio - Direct excitation - Fiber materials - Green light - Green light emission - Interstitial positions - Laser diodes - Tellurite glass - Tellurites - Up-conversion emission - Visible lasers - ZnO
Classification code:547.2 Rare Earth Metals - 741.1.2 Fiber Optics - 801 Chemistry - 804.2 Inorganic Compounds - 812.3 Glass
DOI:10.1016/j.jnoncrysol.2010.09.010
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 202>
Accession number:20103113111303
Title:Optic effect of KCl on GeS<inf>2</inf>G-Ga<inf>2</inf>S<inf>3</inf> chalcogenide glasses
Authors:Wang, Xunsi (1); Liang, Xiaowei (2); Zhu, Mingxing (1); Dai, Shixun (1); Xu, Tiefeng (1); Nie, Qiuhua (1); Shen, Xiang (1); Dong, Furong (1); Huang, Yi (1)
Author affiliation:(1) Faculty of Information Science and Engineering, Ningbo University, Ningbo, Zhejiang 315211, China; (2) Faculty of Electronics, College of Public Safety and Sea Police, Ningbo, Zhejiang 315801, China; (3) 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
Corresponding author:Wang, X.(xunsiwang@siom.ac.cn)
Source title:Guangxue Xuebao/Acta Optica Sinica
Abbreviated source title:Guangxue Xuebao
Volume:30
Issue:7
Issue date:July 2010
Publication year:2010
Pages:2047-2052
Language:Chinese
ISSN:02532239
CODEN:GUXUDC
Document type:Journal article (JA)
Publisher:Chinese Optical Society, P.O. Box 80, Xi'an, 710068, China
Abstract:Series of GeS<inf>2</inf>-Ga<inf>2</inf>S<inf>3</inf>-KCl chalcohalide glasses were prepared by traditional melt-quenching method. Thickness, density, refractive index, visible/near-infrared absorption and infrared transmission spectra were adopted to the analysis of the allowed direct interband optical transitions of optic gap with Tauc equation. The results show a good physical performance as it possesses a wide glass-forming regions of GeS<inf>2</inf>-Ga<inf>2</inf>S<inf>3</inf>-KCl pseudo-ternary glass system. With the increasing of KCl content, there were significant decreases in glass density and refractive index, but there is a significant augmentation of optic band gap. Others, some corresponding changes of glass host structure were deduced from FTIR and Raman spectra, as that the IR optic spectra was improved, just like the Raman spectrum changed by steps, IR absorption cutting-off edge red-shifted with regular. Based on the analysis of KCl adding in the glass host, a quantitative description was given about the correlations between IR multi-phonon absorption and fundamental phonon-vibration, as it shows a deterministic dependence of the optic optical properties of chalco-halide glasses on glass host.
Number of references:9
Main heading:Absorption spectroscopy
Controlled terms:Absorption - Energy gap - Gallium - Glass - Infrared absorption - Infrared spectroscopy - Light refraction - Light transmission - Phonons - Raman scattering - Raman spectroscopy - Refractive index - Refractometers - Spectrum analysis - Vibration analysis
Uncontrolled terms:Chalcogenide glass - Chalcohalide glass - Cutting-off - FTIR - Glass density - Glass hosts - Glass-forming - Infrared transmission spectra - Interband - IR absorption - Melt quenching method - Multi-phonon absorption - Optic band gap - Physical performance - Quantitative description - Raman spectra - Raman Spectrum - Red-shifted - Ternary glass
Classification code:931.2 Physical Properties of Gases, Liquids and Solids - 931.3 Atomic and Molecular Physics - 941 Acoustical and Optical Measuring Instruments - 941.3 Optical Instruments - 922.2 Mathematical Statistics - 941.4 Optical Variables Measurements - 943 Mechanical and Miscellaneous Measuring Instruments - 943.2 Mechanical Variables Measurements - 944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments - 942 Electric and Electronic Measuring Instruments - 921 Mathematics - 711 Electromagnetic Waves - 712.1 Semiconducting Materials - 741 Light, Optics and Optical Devices - 741.1 Light/Optics - 549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals - 751.1 Acoustic Waves - 801 Chemistry - 802.3 Chemical Operations - 812.3 Glass - 751.2 Acoustic Properties of Materials
DOI:10.3788/AOS20103007.2047
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 203>
Accession number:20105013492644
Title:The effect of added O<inf>2</inf> on the transmittance and radiation resistance of radiation resistant glasses
Authors:Li, Weinan (1); Lu, Min (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), Xian, Shanxi 710119, China
Corresponding author:Lu, M.(lumin@opt.ac.cn)
Source title:Optics Express
Abbreviated source title:Opt. Express
Volume:18
Issue:25
Issue date:December 6, 2010
Publication year:2010
Pages:26307-26312
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:One method of hardening optical glasses against radiation-induced darkening has been to add CeO<inf>2</inf> to the batch composition. In the present investigation we prepared a series of lanthanum crown glasses with varying degrees of CeO<inf>2</inf> additions and melted them at 1, 400°C with and without bubbling oxygen gas. We examined the influence of added oxygen on the optical transmissions of these glasses in the spectral range 460 to 760 nm following gamma irradiations ranging from 10 to 250 krad. The results showed that dose-for-dose the radiation-induced optical attenuations of the oxidized glasses were greater than for the glasses without added O<inf>2</inf>. © 2010 Optical Society of America.
Number of references:14
Main heading:Radiation hardening
Controlled terms:Light transmission - Optical glass - Oxygen
Uncontrolled terms:Batch composition - Gamma irradiation - Optical attenuation - Optical transmissions - Oxygen gas - Radiation resistance - Radiation-induced - Radiation-resistant glass - Spectral range
Classification code:622.2 Radiation Effects - 741.1 Light/Optics - 741.3 Optical Devices and Systems - 804 Chemical Products Generally
DOI:10.1364/OE.18.026307
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 204>
Accession number:20110413608725
Title:A novel image quality metric based on morphological component analysis
Authors:Li, Xuelong (1); He, Lihuo (2); Lu, Wen (2); Gao, Xinbo (2); Tao, Dacheng (3)
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) VIPS Lab. and Key Laboratory of Intelligent Perception and Image Understanding, School of Electronic Engineering, Xidian University, Xi'an 710071, China; (3) School of Computer Engineering, Nanyang Technological University, Singapore 639798, Singapore
Corresponding author:Li, X.(xuelong_li@opt.ac.cn)
Source title:Conference Proceedings - IEEE International Conference on Systems, Man and Cybernetics
Abbreviated source title:Conf. Proc. IEEE Int. Conf. Syst. Man Cybern.
Monograph title:2010 IEEE International Conference on Systems, Man and Cybernetics, SMC 2010
Issue date:2010
Publication year:2010
Pages:1449-1454
Article number:5642482
Language:English
ISSN:1062922X
CODEN:PICYE3
ISBN-13:9781424465880
Document type:Conference article (CA)
Conference name:2010 IEEE International Conference on Systems, Man and Cybernetics, SMC 2010
Conference date:October 10, 2010 - October 13, 2010
Conference location:Istanbul, Turkey
Conference code:83423
Publisher:Institute of Electrical and Electronics Engineers Inc., 3 Park Avenue, 17th Floor, New York, NY 10016-5997, United States
Abstract:Due to that human eye has different perceptual characteristics for different morphological components, so a novel image quality metric is proposed by incorporating morphological component analysis (MCA) and human visual system (HVS), which is capable of assessing the image with different types of distortion. Firstly, reference and distorted images are decomposed into texture and cartoon components by MCA respectively. Then these components are changed into perceptual features by just noticeable difference (JND) which integrates masking features, luminance adaptation and contrast sensitive function (CSF). Finally, the difference between reference and distorted images' perceptual features is quantified using a pooling strategy, and then the final result of the image quality is obtained. Experimental results demonstrate that the performance of the metric prevail over some existing methods on LIVE database II. ©2010 IEEE.
Number of references:13
Main heading:Image quality
Controlled terms:Cybernetics - Textures
Uncontrolled terms:Cartoon component - Contrast sensitive function - Distorted images - Existing method - Human eye - Human visual systems - Image quality measurement - Image quality metrics - JND - Just-noticeable difference - Morphological component analysis - Perceptual feature
Classification code:731.1 Control Systems - 741 Light, Optics and Optical Devices - 933 Solid State Physics
DOI:10.1109/ICSMC.2010.5642482
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 205>
Accession number:20101212786739
Title:Fluoride sensitive optical probe of microstructured polymer optical fiber modified with sol-gel thin film
Authors:Yang, Xing-Hua (1); Peng, Li-Rong (1); Teng, Ping-Ping (2); Yuan, Li-Bo (1); Wang, Li-Li (3)
Author affiliation:(1) College of Science, Harbin Engineering University, Harbin 150001, China; (2) Institute of Harbin North Special Vehicle Research, Harbin 150056, 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:Yang, X.-H.(yangxh@hrbeu.edu.cn)
Source title:Guangxue Jingmi Gongcheng/Optics and Precision Engineering
Abbreviated source title:Guangxue Jingmi Gongcheng
Volume:18
Issue:1
Issue date:January 2010
Publication year:2010
Pages:83-87
Language:Chinese
ISSN:1004924X
CODEN:GJGOF4
Document type:Journal article (JA)
Publisher:Chinese Academy of Sciences, 140 Renmin Street, Changchun, 130022, China
Abstract:An optical fluoride probe was fabricated based on Microstructured Polymer Optical Fibers (MPOFs) modified by morin-Al complex doped silica gel films. The structure of this probe was based on microstructured polymer optical fibers with microholes and these microholes could be used as the substrate of sensing materials and minor reaction pools. The deposition of sensing layer was realized by a sol-gel process. When the sol doped with morin-Al was inhaled into the optical fiber, the sensing layer was formed on the inner wall. Furthermore, the trace liquid could be hold in the MPOF, and the process of sensing were carried out in the microholes of MPOF. The sensing process was undertaken based on fluorescence process, and the sensing probe shows different fluorescence intensities to different fluoride ion concentrations in the aqueous solution, for the fluoride ion has a stronger quenching effect to the morin-Al in gel matrix. Experimental results show that the range of response is 5-50 mmol/L under the condition of pH in 4.6.
Number of references:11
Main heading:Sol-gel process
Controlled terms:Aluminum - Antibodies - Doping (additives) - Fiber optics - Fibers - Fluorescence - Optical fiber fabrication - Optical fibers - Optical materials - Polymer films - Polymers - Probes - Silica - Silica gel - Sol-gels - Sols
Uncontrolled terms:Al complex - Aqueous solutions - Fluorescence intensities - Fluorescence process - Fluoride ion - Gel matrix - Inner walls - Micro holes - Microstructured polymer optical fiber (MPOF) - Microstructured polymer optical fibers - Microstructured polymer optical fibers (mPOF) - Optical probe - Optical sensing - Quenching effect - Sensing layers - Sensing material - Sensing probe - Sensing process - Silica gel films - Sol-gel thin films
Classification code:804.2 Inorganic Compounds - 812 Ceramics, Refractories and Glass - 812.3 Glass - 813.1 Coating Techniques - 815.1 Polymeric Materials - 817 Plastics and Other Polymers: Products and Applications - 819.4 Fiber Products - 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 - 804 Chemical Products Generally - 461.9.1 Immunology - 482.2 Minerals - 541.1 Aluminum - 712.1 Semiconducting Materials - 712.1.2 Compound Semiconducting Materials - 714.2 Semiconductor Devices and Integrated Circuits - 741.1 Light/Optics - 741.1.2 Fiber Optics - 741.3 Optical Devices and Systems - 801 Chemistry - 801.3 Colloid Chemistry
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 206>
Accession number:20104713409445
Title:Primary scientific results of Chang'E-1 lunar mission
Authors:Ouyang, Zi Yuan (1); Li, ChunLai (1); Zou, YongLiao (1); Zhang, HongBo (1); Lü, Chang (1); Liu, JianZhong (1); Liu, JianJun (1); Zuo, Wei (1); Su, Yan (1); Wen, WeiBin (1); Bian, Wei (1); Zhao, BaoChang (3); Wang, JianYu (4); Yang, JianFeng (3); Chang, Jin (5); Wang, HuanYu (6); Zhang, XiaoHui (7); Wang, ShiJin (7); Wang, Min (1); Ren, Xin (1); Mu, LingLi (1); Kong, DeQing (1); Wang, XiaoQian (1); Wang, Fang (1); Geng, Liang (1); Zhang, ZhouBin (1); Zheng, Lei (1); Zhu, XinYing (1); Zheng, YongChun (1); Li, JunDuo (1); Zou, XiaoDuan (1); Xu, Chun (1); Shi, ShuoBiao (1); Gao, YiFei (1); Gao, GuanNan (1)
Author affiliation:(1) National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China; (2) Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, China; (3) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (4) Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, China; (5) Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210008, China; (6) Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China; (7) Center for Space Science and Applied Research, Chinese Academy of Sciences, Beijing 100190, China
Corresponding author:Ouyang, Z. Y.(ouyangzy@nao.cas.cn)
Source title:Science China Earth Sciences
Abbreviated source title:Sci. China Earth Sci.
Volume:53
Issue:11
Issue date:November 2010
Publication year:2010
Pages:1565-1581
Language:English
ISSN:16747313
Document type:Journal article (JA)
Publisher:Science in China Press, 16 Donghuangchenggen North Street, Beijing, PR 100717, China
Abstract:The strategic plan for the development of the unmanned Chinese Lunar Exploration Program is characterized by three distinct stages: "orbiting around", "landing on" and "returning from" the Moon. The first Chinese lunar probe, Chang'E-1, which was successfully launched on October 24th, 2007 at Xichang Satellite Launch Center, and guided to crash on the Moon on March 1st, 2009, at 52.36°E, 1.50°S, in the north of Mare Fecunditatis, is the first step towards the "orbiting around" stage. The Chang'E-1 mission lasted 495 days, exceeding the expected life-span by about four months. A total of 1.37 TB raw data was received from Chang'E-1. It was then processed into 4 TB scientific data products at various levels. Many scientific results have been obtained by analyzing these data, including especially the "global lunar image from the first Chinese lunar exploration mission". All scientific goals of Chang'E-1 have been achieved. It provides much useful materials for further advances of lunar sciences and planetary chemistry. Meanwhile, these results will serve as a firm basis for future Chinese lunar missions. © 2010 Science China Press and Springer-Verlag Berlin Heidelberg.
Number of references:11
Main heading:Lunar missions
Controlled terms:Lunar landing
Uncontrolled terms:Chang'E-1 - Expected life - Lunar explorations - Lunar orbiter - Lunar probe - results - Satellite launches - Scientific data - Scientific results - Strategic plan
Classification code:656.1 Space Flight
DOI:10.1007/s11430-010-4056-2
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 207>
Accession number:20104213301710
Title:Design of Topas photonic bandgap fiber with high birefringence and low confinement loss
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: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:621
Issue:1-3
Issue date:2010
Publication year:2010
Pages:548-551
Language:English
ISSN:01689002
CODEN:NIMAER
Document type:Journal article (JA)
Publisher:Elsevier, P.O. Box 211, Amsterdam, 1000 AE, Netherlands
Abstract:A highly birefringent hollow-core photonic bandgap fiber based on Topas cyclic olefin copolymer is designed. The rhombic hollow-core with rounded corners is formed by omitting four central air holes of the cladding structure. The guided modes, birefringence and confinement loss of the fiber are investigated by using the full-vector finite element method. A high phase birefringence of the order of 10<sup>-3</sup>, a group birefringence of the order of 10<sup>-2</sup> and confinement loss less than 0.1 dB/km are obtained at the central wavelength (1.55 μm) range of the bandgap for fiber with seven rings of air holes in the cladding region. © 2010 Elsevier B.V. All rights reserved.
Number of references:23
Main heading:Photonic bandgap fibers
Controlled terms:Birefringence - Energy gap - Fiber optic components - Fibers - Finite element method - Olefins - Optical fibers - Spontaneous emission
Uncontrolled terms:Air holes - Band gaps - Central wavelength - Cladding structures - Confinement loss - Cyclic Olefin Copolymers - Finite Element - Group birefringence - Guided modes - High birefringence - Hollow-core - Phase birefringence - Polymer optical fiber - Rounded corners - Topas COC - Vector finite element methods
Classification code:921.6 Numerical Methods - 817 Plastics and Other Polymers: Products and Applications - 812 Ceramics, Refractories and Glass - 931.3 Atomic and Molecular Physics - 804.1 Organic Compounds - 741.1 Light/Optics - 711 Electromagnetic Waves - 741.1.2 Fiber Optics
DOI:10.1016/j.nima.2010.05.045
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 208>
Accession number:20103213126328
Title:Optimized logarithmic phase masks used to generate defocus invariant modulation transfer function for wavefront coding system
Authors:Zhao, Hui (1); Li, Yingcai (1)
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Science, Xi'an Hi-Tech Industrial Development Zone, 17 Xinxi Road, Xi'an, Shaanxi 710119, China
Corresponding author:Zhao, H.(zhaohui1981.zju@gmail.com)
Source title:Optics Letters
Abbreviated source title:Opt. Lett.
Volume:35
Issue:15
Issue date:August 1, 2010
Publication year:2010
Pages:2630-2632
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:In a previous Letter [Opt. Lett. 33, 1171 (2008)], we proposed an improved logarithmic phase mask by making modifications to the original one designed by Sherif. However, further studies in another paper [Appl. Opt. 49, 229 (2010)] show that even when the Sherif mask and the improved one are optimized, their corresponding defocused modulation transfer functions (MTFs) are still not stable with respect to focus errors. So, by further modifying their phase profiles, we design another two logarithmic phase masks that exhibit more stable defocused MTF. However, with the defocus-induced phase effect considered, we find that the performance of the two masks proposed in this Letter is better than the Sherif mask, but worse than our previously proposed phase mask, according to the Hubert space angle. © 2010 Optical Society of America.
Number of references:15
Main heading:Transfer functions
Controlled terms:Mammography - Optical design - Optimization
Uncontrolled terms:Defocus - Hubert space - Modulation transfer function - Phase effects - Phase masks - Phase profile - Wavefront coding
Classification code:921.5 Optimization Techniques - 921 Mathematics - 746 Imaging Techniques - 741.1 Light/Optics - 731.1 Control Systems - 703.1 Electric Networks - 461.7 Health Care
DOI:10.1364/OL.35.002630
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 209>
Accession number:20105013487346
Title:Fabrication and characteristics of near elliptical core squeezed hexangular lattice photonic crystal fibers based on polymer
Authors:Zhang, Yani (1)
Author affiliation:(1) Department of Physics and Information Technology, Baoji College of Arts and Science, Baoji, 721007, 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:Zhang, Y.
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:7655
Issue:PART 1
Monograph title:5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies
Issue date:2010
Publication year:2010
Article number:76551N
Language:English
ISSN:0277786X
CODEN:PSISDG
ISBN-13:9780819480859
Document type:Conference article (CA)
Conference name:5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies
Conference date:April 26, 2010 - April 29, 2010
Conference location:Dalian, China
Conference code:82771
Sponsor:The Chinese Optical Society (COS); CAS, The Institute of Optics and Electronics (IOE); The Society of Photo-Optical Instrumentation Engineers (SPIE)
Publisher:SPIE, P.O. Box 10, Bellingham, WA 98227-0010, United States
Abstract:The polarization properties of a new structure of high birefringence polarization maintaining photonic crystal fibers with elliptical-core triangle lattice of squeezed hexangular structure were explored. The modal birefringence and the first order polarization mode dispersion were analyzed by adopting a full-vector localized basis function method. The numerical results show that the polarization properties are strongly dependent on structural parameters of the PCF. Furthermore, the proposed fiber was fabricated based on MMA monomer polymerization method in situ. The optical properties were measured and modal birefringence was well consistent with numerical calculation. © 2010 Copyright SPIE - The International Society for Optical Engineering.
Number of references:11
Main heading:Optical fiber fabrication
Controlled terms:Birefringence - Crystal structure - Crystal whiskers - Fibers - Laser pulses - Manufacture - Nonlinear optics - Optical materials - Photonic crystal fibers - Photonic crystals - Polarization - Structural design - Technology - Testing
Uncontrolled terms:Basis functions - Fiber design and fabrication - First order - High birefringence - In-situ - Lattice photonic crystals - Modal birefringence - Monomer polymerization methods - Near elliptical cores - New structures - Numerical calculation - Numerical results - Polarization properties - Polarization-maintaining photonic crystal fiber - Structural parameter - Triangle lattice
Classification code:951 Materials Science - 901 Engineering Profession - 817 Plastics and Other Polymers: Products and Applications - 812.3 Glass - 812 Ceramics, Refractories and Glass - 801.4 Physical Chemistry - 744.1 Lasers, General - 741 Light, Optics and Optical Devices - 537.1 Heat Treatment Processes - 423.2 Non Mechanical Properties of Building Materials: Test Methods - 408.1 Structural Design, General
DOI:10.1117/12.866764
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 210>
Accession number:20103713225081
Title:Structured light sheet fluorescence microscopy based on four beam interference
Authors:Lei, Ming (1); Zumbusch, Andreas (1)
Author affiliation:(1) Department of Chemie, University of Konstanz, D-78457 Konstanz, Germany; (2) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xian 710119, China
Corresponding author:Lei, M.
Source title:Optics Express
Abbreviated source title:Opt. Express
Volume:18
Issue:18
Issue date:August 30, 2010
Publication year:2010
Pages:19232-19241
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 3D structured light sheet microscope using a four-faceted symmetric pyramid is presented. The sample is illuminated by the resulting four beam interference field. This approach combines advantages of standing wave and structured illumination microscopy. Examples of micrographs of fluorescently labeled Chinese hamster ovary (CHO) cells as well as of the compound eyes of drosophila are shown and the optical sectioning ability of our system is demonstrated. The capabilities and the limitations of the scheme are discussed. © 2010 Optical Society of America.
Number of references:26
Main heading:Fluorescence microscopy
Uncontrolled terms:Chinese Hamster ovary cells - Compound eye - Four-beam interference - Optical sectioning - Standing wave - Structured illumination microscopy - Structured Light
Classification code:461.9.1 Immunology
DOI:10.1364/OE.18.019232
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 211>
Accession number:20100112616297
Title:Simultaneous otdm demultiplexing and data format conversion using a D flip-flop
Authors:Xie, Yiyuan (1); Zhang, Jianguo (2); Xu, Jiang (4)
Author affiliation:(1) College of Optoelectronic Engineering, Chongqing University, Chongqing 400044, 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) Department of Electrical, Computer and Communications Engineering, London South Bank University, 103 Borough Road, London SE1 0AA, United Kingdom; (4) Department of Electrical, Computer and Communications Engineering, Hong Kong University of Science and Technology, Hong Kong, Hong Kong
Corresponding author:Xie, Y.(xieyiyuan1000@hotmail.com)
Source title:Microwave and Optical Technology Letters
Abbreviated source title:Microwave Opt Technol Lett
Volume:52
Issue:2
Issue date:February 2010
Publication year:2010
Pages:398-400
Language:English
ISSN:08952477
CODEN:MOTLEO
Document type:Journal article (JA)
Publisher:John Wiley and Sons Inc., P.O.Box 18667, Newark, NJ 07191-8667, United States
Abstract:A D flip-flop is used to simultaneously demultiplex and data format conversion a single 10 Gbits/s channel from a 20 Gbits/s optical time-division multiplexed data stream. Error-free demultiplexing was achieved at very low optical signal power: -14 dBm (20 Gbits/s). The proposed demultiplexer has a simple structure and achieves return-to-zero (RZ) to nonreturn-to-zero (NRZ) data format conversion. The demultiplexer allows monolithic integration. The proposed demultiplexer will become an important interface technology in future for connecting the ultra-fast optical time division multiplexing (OTDM) long haul networks to the wavelength division multiplexing (WDM) access and metro networks. © 2009 Wiley Periodicals, Inc.
Number of references:7
Main heading:Optical frequency conversion
Controlled terms:Demultiplexing - Flip flop circuits - Monolithic integrated circuits - Multiplexing equipment - Time division multiple access - Time division multiplexing - Wavelength division multiplexing
Uncontrolled terms:Data format conversion - Data stream - Demultiplexers - Interface technology - Long-haul networks - Metro networks - Monolithic integration - Non-return-to-zero - Non-return-to-zero datum - Optical signals - Optical time division multiplexing - Optical time-division multiplexed - Return-to-zero - Simple structures - Ultra-fast
Classification code:741.1.1 Nonlinear Optics - 723 Computer Software, Data Handling and Applications - 718 Telephone Systems and Related Technologies; Line Communications - 717 Optical Communication - 716 Telecommunication; Radar, Radio and Television - 714.2 Semiconductor Devices and Integrated Circuits - 713.4 Pulse Circuits
DOI:10.1002/mop.24955
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 212>
Accession number:20101912916463
Title:Faraday glasses with a large size and high performance
Authors:Li, Weinan (1); Zou, Kuaisheng (1); Lu, Min (1); Peng, Bo (1); Zhao, Wei (1)
Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Procession Mechanics, Chinese Academy of Sciences, Xian, China
Corresponding author:Li, W.(liweinan@opt.ac.cn)
Source title:International Journal of Applied Ceramic Technology
Abbreviated source title:Int. J. Appl. Ceram. Technol.
Volume:7
Issue:3
Issue date:May-June 2010
Publication year:2010
Pages:369-374
Language:English
ISSN:1546542X
E-ISSN:17447402
Document type:Journal article (JA)
Publisher:Blackwell Publishing Ltd, 9600 Garsington Road, Oxford, OX4 2XG, United Kingdom
Abstract:A kind of Faraday glass with a size of Φ40 mm × 14 mm and Φ100-300 mm × 25 mm, respectively, was prepared by the melting and casting process, which had neither a Pt particulate nor a bubble or striation. The measurement results showed that the surface homogeneity of the samples was up to ± 1 × 10<sup>-6</sup>, the laser threshold reached 10 J/cm<sup>2</sup> (1ω, 3 ns), and the Verdet constants of the glasses were -0.273 min/Oe/cm at 632.8 nm and -0.076 min/Oe/cm at 1064 nm, respectively. © 2009 The American Ceramic Society.
Number of references:21
Main heading:Glass
Controlled terms:Platinum
Uncontrolled terms:1064 nm - Casting process - Large sizes - Laser threshold - Measurement results - Surface homogeneity - Verdet constant
Classification code:547.1 Precious Metals - 812.3 Glass
DOI:10.1111/j.1744-7402.2008.02344.x
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 213>
Accession number:20102112951935
Title:A unified tensor level set for image segmentation
Authors:Wang, Bin (1); Gao, Xinbo (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, Singapore 639798, 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:Wang, B.(bwang.xd@gmail.com)
Source title:IEEE Transactions on Systems, Man, and Cybernetics, Part B: Cybernetics
Abbreviated source title:IEEE Trans Syst Man Cybern Part B Cybern
Volume:40
Issue:3
Issue date:June 2010
Publication year:2010
Pages:857-867
Article number:5308251
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 region-based unified tensor level set model for image segmentation. This model introduces a three-order tensor to comprehensively depict features of pixels, e.g., gray value and the local geometrical features, such as orientation and gradient, and then, by defining a weighted distance, we generalized the representative region-based level set method from scalar to tensor. The proposed model has four main advantages compared with the traditional representative method as follows. First, involving the Gaussian filter bank, the model is robust against noise, particularly the salt- and pepper-type noise. Second, considering the local geometrical features, e.g., orientation and gradient, the model pays more attention to boundaries and makes the evolving curve stop more easily at the boundary location. Third, due to the unified tensor pixel representation representing the pixels, the model segments images more accurately and naturally. Fourth, based on a weighted distance definition, the model possesses the capacity to cope with data varying from scalar to vector, then to high-order tensor. We apply the proposed method to synthetic, medical, and natural images, and the result suggests that the proposed method is superior to the available representative region-based level set method. © 2006 IEEE.
Number of references:39
Main heading:Image segmentation
Controlled terms:Aircraft engines - Computational fluid dynamics - Digital image storage - Drop breakup - Filter banks - Level measurement - Partial differential equations - Pixels - Tensors
Uncontrolled terms:Gabor filter banks - Gaussian filters - Geometric active contours - Geometrical features - Gray value - High-order - Level Set - Level Set method - Level-set model - Model segment - Natural images - Pixel representation - Region-based - Segmentation levels - Tensor fields - Weighted distance
Classification code:723.5 Computer Applications - 741.1 Light/Optics - 741.3 Optical Devices and Systems - 742.2 Photographic Equipment - 943.2 Mechanical Variables Measurements - 921.1 Algebra - 921.6 Numerical Methods - 931.1 Mechanics - 931.2 Physical Properties of Gases, Liquids and Solids - 921.2 Calculus - 723.2 Data Processing and Image Processing - 722.4 Digital Computers and Systems - 631.1.1 Liquid Dynamics - 631.1.2 Gas Dynamics - 653.1 Aircraft Engines, General - 703.2 Electric Filters - 713 Electronic Circuits - 716 Telecommunication; Radar, Radio and Television - 722.1 Data Storage, Equipment and Techniques - 722.2 Computer Peripheral Equipment
DOI:10.1109/TSMCB.2009.2031090
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 214>
Accession number:20104713407161
Title:Adaptive control of free-floating space robot with disturbance based on robust fuzzy compensator
Authors:Liu, Shuang (1); Ma, Caiwen (1); Luo, Cuihua (1); Wang, Xiaobai (1)
Author affiliation:(1) Photoelectric Measurement and Control Technology Research Department, Xi'an Institute of Optics, Precision Mechanics of Chinese Academy of Sciences, Xi'an, China
Corresponding author:Liu, S.(shuang8494@126.com)
Source title:Proceedings - 2010 2nd International Conference on Intelligent Human-Machine Systems and Cybernetics, IHMSC 2010
Abbreviated source title:Proc. - Int. Conf. Intelligent Hum.-Mach. Syst. Cybern., IHMSC
Volume:1
Monograph title:Proceedings - 2010 2nd International Conference on Intelligent Human-Machine Systems and Cybernetics, IHMSC 2010
Issue date:2010
Publication year:2010
Pages:23-28
Article number:5590787
Language:English
ISBN-13:9780769541518
Document type:Conference article (CA)
Conference name:2010 2nd International Conference on Intelligent Human-Machine Systems and Cybernetics, IHMSC 2010
Conference date:August 26, 2010 - August 28, 2010
Conference location:Nanjing, China
Conference code:82364
Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States
Abstract:This paper proposes an adaptive controller for a free-floating space robot (FFSR) in the presence of friction, disturbance and variation of payload based on robust fuzzy compensator. In the micro-gravity environment, the FFSR lacks a fixed base, so the high dynamic coupling between the manipulators and the free-floating base leads to two inherent difficulties, such as non-linear parameterization of the dynamic equation and both kinematic and dynamic parameter uncertainties. In order to overcome these obstacles, we use the fuzzy logic system (FLS) to approximate the nonlinear dynamic function. The proposed controller does not involve any complex calculations, but it is still possible to overcome the uncertainty and efficiently track the desired trajectory of the manipulators in a short time. The stability of the controller is demonstrated, and meanwhile, the structure of the controller is given. Through numerical simulations, the validity of the proposed scheme is also demonstrated. © 2010 IEEE.
Number of references:11
Main heading:Adaptive control systems
Controlled terms:Control theory - Controllers - Couplings - Cybernetics - Fuzzy logic - Fuzzy systems - Manipulators
Uncontrolled terms:Adaptive Control - Adaptive controllers - Dynamic equations - Dynamic parameters - FFSR - Fixed base - Floating base - Free-floating space robot - Fuzzy compensator - Fuzzy logic system - High dynamic - Non-linear - Nonlinear dynamic functions - Numerical simulation - Robust adaptive control - Robust fuzzy
Classification code:602 Mechanical Drives and Transmissions - 721.1 Computer Theory, Includes Formal Logic, Automata Theory, Switching Theory, Programming Theory - 731.1 Control Systems - 731.5 Robotics - 732.1 Control Equipment
DOI:10.1109/IHMSC.2010.13
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 215>
Accession number:20103413184302
Title:Luminescent properties of Nd<sup>3+</sup>-doped LaF<inf>3</inf> core/shell nanoparticles with enhanced near infrared (NIR) emission
Authors:Cui, Xiaoxia (1); She, Jiangbo (1); Gao, Chao (1); Cui, Kai (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, 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:Chemical Physics Letters
Abbreviated source title:Chem. Phys. Lett.
Volume:494
Issue:1-3
Issue date:July 9, 2010
Publication year:2010
Pages:60-63
Language:English
ISSN:00092614
CODEN:CHPLBC
Document type:Journal article (JA)
Publisher:Elsevier, P.O. Box 211, Amsterdam, 1000 AE, Netherlands
Abstract:A kind of Nd<sup>3+</sup>-doped LaF<inf>3</inf> nanoparticles with core/shell structure were synthesized via a co-precipitation method. The possible formation mechanisms for the core/shell architectures were presented. The X-ray diffraction (XRD) patterns indicated that the obtained nanoparticles exhibit hexagonal structure. In comparison with LaF<inf>3</inf>:Nd core nanoparticles, the fluorescence intensity and lifetime were increased by 140% and 150% respectively in LaF<inf>3</inf>:Nd/LaF<inf>3</inf> core/shell nanoparticles. The obvious features are mainly attributed to the formation of LaF<inf>3</inf> shell which effectively protected the Nd<sup>3+</sup> ions from surrounding influence. The results show that rare-earth-doped nanoparticles with core/shell structure have potential applications in biological labeling and light-emitting devices. © 2010 Elsevier B.V. All rights reserved.
Number of references:19
Main heading:Precipitation (chemical)
Controlled terms:Infrared devices - Nanoparticles - Neodymium - X ray diffraction
Uncontrolled terms:Biological labeling - Coprecipitation method - Core/shell - Core/shell nanoparticles - Core/shell structure - Doped nanoparticles - Fluorescence intensities - Formation mechanism - Hexagonal structures - Light emitting devices - Luminescent property - Near-infrared emissions - Potential applications
Classification code:933.1.1 Crystal Lattice - 933 Solid State Physics - 802.3 Chemical Operations - 761 Nanotechnology - 741.3 Optical Devices and Systems - 708 Electric and Magnetic Materials - 547.2 Rare Earth Metals
DOI:10.1016/j.cplett.2010.05.070
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 216>
Accession number:20110213573251
Title:Incoherent dark solitons splitting in LiNbO<inf>3</inf>:Fe crystal
Authors:Zhang, Yuhong (1); Lu, Keqing (1); Long, Xuewen (1); Li, Kehao (1); Guo, Jianbang (1)
Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academic of Sciences, Xi'an 710119, China; (2) Xi'an Technological University, Xi'an 710032, China
Corresponding author:Zhang, Y.(zhangyh1979@163.com)
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:7846
Monograph title:Quantum and Nonlinear Optics
Issue date:2010
Publication year:2010
Article number:78460U
Language:English
ISSN:0277786X
CODEN:PSISDG
ISBN-13:9780819483768
Document type:Conference article (CA)
Conference name:Quantum and Nonlinear Optics
Conference date:October 18, 2010 - October 19, 2010
Conference location:Beijing, China
Conference code:83247
Sponsor:The Society of Photo-Optical Instrumentation Engineers (SPIE); Chinese Optical Society (COS)
Publisher:SPIE, P.O. Box 10, Bellingham, WA 98227-0010, United States
Abstract:We observed experimentally one-dimensional even-number sequence of dark photovoltaic solitons in LiNbO<inf>3</inf>:Fe crystal without additional background illumination with spatially incoherent beam that contains a dark stripe generated from an amplitude jump in the center of the incoherent beam. In experiment, we found that the initial stripe width at the entrance face of the crystal is a key parameter for generating an even-number sequence of dark incoherent photovoltaic solitons. If the initial width of the dark stripe was small, only a Y-junction soliton pair was generated. As the initial width of the dark stripe was creased to 20.1μm, the stripe can split into an even-number sequence of soliton structure. The soliton pairs far away from the center had smaller width and less visibility. In addition, the separations between adjacent dark stripes became slightly smaller than that of the Y-junction dark solitons. In particular, when the input width in the entrance face of the crystal was 30.8μm, the diffractive beam in the output face of the crystal was no longer expanding its outer boundary, but shrank its width. © 2010 SPIE.
Number of references:19
Main heading:Solitons
Controlled terms:Nonlinear optics - Optical materials - Photovoltaic effects - Vehicular tunnels
Uncontrolled terms:Amplitude jump - Amplitude marks - Background illumination - Dark solitons - Dark stripe - Fe crystals - Input width - Key parameters - Partially spatial incoherences - Photovoltaic soliton - Soliton pairs - Soliton structures - Stripe width - Y-junctions
Classification code:432 Highway Transportation - 741 Light, Optics and Optical Devices - 931.3 Atomic and Molecular Physics
DOI:10.1117/12.868757
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 217>
Accession number:20101012754454
Title:Incoherently coupled soliton pairs in nonlocal nonlinear media
Authors:Lu, Ke-Qing (1); Li, Ke-Hao (1); Zhao, Wei (1); Zhang, Yi-Qi (1); Zhang, Mei-Zhi (1); Zhang, Yu-Hong (1); Cheng, Guang-Hua (1); Zhang, Yan-Peng (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) Department of Electronic Science and Technology, Xi'An Jiaotong University, Xi'an 710049, China; (3) Graduate School of the Chinese Academy of Sciences, Beijing 100049, China
Corresponding author:Lu, K.-Q.(kqinglu@opt.ac.cn)
Source title:Chinese Physics B
Abbreviated source title:Chin. Phys.
Volume:19
Issue:2
Issue date:2010
Publication year:2010
Article number:024211
Language:English
ISSN:16741056
Document type:Journal article (JA)
Publisher:Institute of Physics Publishing, Temple Back, Bristol, BS1 6BE, United Kingdom
Abstract:We show that incoherently coupled soliton pairs can exist in nonlocal Kerr-type nonlinear media. Such solitons can propagate in bright-bright, dark-dark, and gray-gray configurations. When the nonlocal nonlinearity is absent, these bright-bright and dark-dark soliton pairs are those observed previously in local Kerr-type nonlinear media. Our analysis indicates that for a self-focusing nonlinearity the intensity full width half maximum (FWHM) of the bright-bright pair components increases with the degree of nonlocality of the nonlinear response, whereas for a self-defocusing nonlinearity the intensity FWHM of the dark-dark and gray-gray pair components decreases with the increase in the degree of nonlocality of the nonlinear response. The stability of these soliton pairs has been investigated numerically and it has been found that they are stable. © 2010 Chinese Physical Society and IOP Publishing Ltd.
Number of references:30
Main heading:Solitons
Controlled terms:Kerr magnetooptical effect - Magnetic field effects - Nonlinear control systems - Nonlinear optics - Optical Kerr effect - Optical materials
Uncontrolled terms:Dark solitons - Full width half maximum - Kerr effect - Kerr effects - Kerr-type nonlinear media - Non-linear response - Non-Linearity - Nonlocal - Nonlocal nonlinear media - Nonlocal nonlinearities - Nonlocalities - Self-defocusing - Self-focusing - Soliton pairs
Classification code:931.3 Atomic and Molecular Physics - 921.1 Algebra - 741.3 Optical Devices and Systems - 741.1.1 Nonlinear Optics - 741.1 Light/Optics - 731.1 Control Systems - 701.2 Magnetism: Basic Concepts and Phenomena
DOI:10.1088/1674-1056/19/2/024211
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 218>
Accession number:20100312640939
Title:Modeling and simulation of effect of optical distortion on the large aperture static imaging spectrometer
Authors:Lü, Qun-Bo (1); Xiangli, Bin (1); Yao, Tao (1); Jing, Juan-Juan (1); Wang, Zhong-Hou (1)
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (2) College of Opto-Electronics, Chinese Academy of Sciences, Beijing 100190, China; (3) Graduate University, 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:30
Issue:1
Issue date:January 2010
Publication year:2010
Pages:142-145
Language:Chinese
ISSN:10000593
CODEN:GYGFED
Document type:Journal article (JA)
Publisher:Science Press, 18,Shuangqing Street,Haidian, Beijing, 100085, China
Abstract:As a new type Fourier transform imaging spectrometry, large aperture static imaging spectrometry (LASIS) has come forth in recent years, which has many advantages such as simple principle, high stability and so on. However, the requirement for the optical system design of LASIS was very harsh. As one of the optical aberrations, optical distortion degrades the data quality acquired by LASIS, consequently limits its applications. According to the analysis of the data acquisition principle of LASIS, the data model with the effect of optical distortion was presented, which could be used for LASIS performance pre-evaluation. Finally, the computer simlulation of the data model was achieved with supposed parameters. The simulation results indicated that the relative error more than 5% was induced in the recovery spectrum, and approximate 8 nm spectral line deviation was occurred at the long wavelength region. The results show that the 4% optical distortion was inapplicable for LASIS although it is acceptant for common optical imaging system.
Number of references:19
Main heading:Computer simulation
Controlled terms:Aberrations - Computational methods - Models - Optical systems - Optoelectronic devices - Spectrometry - Spectroscopy
Uncontrolled terms:Data models - Data quality - Fourier-transform imaging - High stability - Imaging spectrometry - Large aperture - Long wavelength - Modeling and simulation - Optical aberration - Optical distortion - Optical imaging system - Optical system designs - Pre-evaluation - Relative errors - Simulation result - Spectral line - Static imaging
Classification code:941.4 Optical Variables Measurements - 941.3 Optical Instruments - 932.2 Nuclear Physics - 931.3 Atomic and Molecular Physics - 921 Mathematics - 902.1 Engineering Graphics - 801 Chemistry - 741.3 Optical Devices and Systems - 741 Light, Optics and Optical Devices - 723.5 Computer Applications - 721.1 Computer Theory, Includes Formal Logic, Automata Theory, Switching Theory, Programming Theory - 717.2 Optical Communication Equipment - 714.2 Semiconductor Devices and Integrated Circuits
DOI:10.3964/j.issn.1000-0593(2010)01-0142-04
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 219>
Accession number:20101212800915
Title:Energy quantisation for dissipative solitons
Authors:Wang, L.R. (1); Liu, X.M. (1); Gong, Y.K. (1); Mao, D. (1); Li, X.H. (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:Electronics Letters
Abbreviated source title:Electron. Lett.
Volume:46
Issue:6
Issue date:2010
Publication year:2010
Pages:436-437
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 energy quantisation effect for dissipative solitons is experimentally observed in an erbium-doped fibre laser with large normal-cavity-dispersion. Experimental results reveal that the steady dissipative solitons tend to be restricted by an upper energy limit and the increment of pump power approaches to a constant with respect to the pulse number. © 2010 The Institution of Engineering and Technology.
Number of references:10
Main heading:Solitons
Controlled terms:Erbium - Fiber lasers
Uncontrolled terms:Dissipative solitons - Energy limit - Erbium-doped fibre lasers - Pulse number - Pump power - Quantisation
Classification code:547.2 Rare Earth Metals - 741.1.2 Fiber Optics - 744.4 Solid State Lasers - 921.1 Algebra - 931.3 Atomic and Molecular Physics
DOI:10.1049/el.2010.0359
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 220>
Accession number:20104113287818
Title:Gray photorefractive polymeric optical spatial solitons
Authors:Lu, Keqing (1); Li, Kehao (2); Zhang, Yanpeng (3); Yuan, Chenzhi (3); Miao, Changyun (1); Chen, Li (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) Department of Electronic Science and Technology, Xi'An Jiaotong University, Xi'an 710049, China; (4) Key Laboratory of Advanced Textile Composites, Tianjin Polytechnic University, Ministry of Education, Tianjin 300160, China; (5) Department of Physics, Nankai University, Tianjin 300071, China; (6) Graduate School of Chinese Academic of Sciences, Beijing 100039, China
Corresponding author:Lu, K.(kqlu@opt.cn)
Source title:Optics Communications
Abbreviated source title:Opt Commun
Volume:283
Issue:23
Issue date:December 1, 2010
Publication year:2010
Pages:4741-4748
Language:English
ISSN:00304018
CODEN:OPCOB8
Document type:Journal article (JA)
Publisher:Elsevier, P.O. Box 211, Amsterdam, 1000 AE, Netherlands
Abstract:We show that gray spatial optical solitons are possible in biased photorefractive polymers under steady-state conditions. We find that for a given material parameter the absolute value of a gray photorefractive polymeric soliton's phase decreases with an increase in the beam's grayness, whereas it increases with the material parameter for a given beam's grayness and that the full width half maximum (FWHM) of the gray soliton beam's intensity increases with the beam's grayness when the normalized background intensity and the material parameter are fixed and decreases with an increase in the normalized background intensity when the material parameter is fixed. On the other hand, we also show that N coupled beam evolution equations in biased photorefractive polymers can exhibit multicomponent gray solitons. These multicomponent gray solitons can be obtained provided that the N coupled beams share the same polarization, wavelength, and are incoherent with one another. The characteristics and stability properties of these multicomponent gray solitons are also discussed in detail. © 2010 Elsevier B.V. All rights reserved.
Number of references:22
Main heading:Polymers
Controlled terms:Nonlinear optics - Photoreactivity - Photorefractive materials - Solitons - Stability
Uncontrolled terms:Absolute values - Coupled beams - Evolution equations - Full width half maximum - Gray solitons - Material parameter - Multicomponents - Optical spatial solitons - Photo-refractive - Photorefractive polymers - Spatial optical solitons - Spatial solitons - Stability properties - Steady-state condition
Classification code:961 Systems Science - 951 Materials Science - 931.3 Atomic and Molecular Physics - 931 Classical Physics; Quantum Theory; Relativity - 815.1 Polymeric Materials - 801 Chemistry - 741 Light, Optics and Optical Devices
DOI:10.1016/j.optcom.2010.06.102
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 221>
Accession number:20110213560587
Title:Excitonic optical absorption in quantum wells under intense terahertz waves polarized along the grown direction
Authors:Li, Ying (1); Zhang, Tong-Yi (2)
Author affiliation:(1) Physics Department, Shangluo University, Shangzhou, 726000, 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, Y.(liying002004@163.com)
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:7854
Monograph title:Infrared, Millimeter Wave, and Terahertz Technologies
Issue date:2010
Publication year:2010
Article number:78542O
Language:English
ISSN:0277786X
CODEN:PSISDG
ISBN-13:9780819483843
Document type:Conference article (CA)
Conference name:Infrared, Millimeter Wave, and Terahertz Technologies
Conference date:October 18, 2010 - October 20, 2010
Conference location:Beijing, China
Conference code:83318
Sponsor:The Society of Photo-Optical Instrumentation Engineers (SPIE); Chinese Optical Society (COS)
Publisher:SPIE, P.O. Box 10, Bellingham, WA 98227-0010, United States
Abstract:Excitonic optical absorption in quantum wells (QWs) under intense terahertz (THz) waves polarized along the grown-direction is investigated. The characteristics induced by the strong THz field in the optical absorption spectrum in the QWs near the band gap edge is analyzed by coherent wave approach. The calculated results with and without the presence of THz field are presented. It shows that the excitonic absorption peaks may split or broaden when an intense THz field is applied. The presence of an intense THz field results in the formation of replicas in the absorption spectrum. The replicas are not symmetric and presence on both sides of the main excitonic peaks due to the Coulomb interaction between electrons and holes. © 2010 Copyright SPIE - The International Society for Optical Engineering.
Number of references:25
Main heading:Terahertz waves
Controlled terms:Absorption - Absorption spectroscopy - Light absorption - Millimeter wave devices - Millimeter waves - Semiconductor quantum wells
Uncontrolled terms:Band-gap edge - Coherent waves - Electrons and holes - Excitonic absorption - Excitonic peak - Optical absorption - Optical absorption spectrum - Quantum well - Terahertz fields - THz fields - Wave approach
Classification code:801 Chemistry - 741.1 Light/Optics - 741 Light, Optics and Optical Devices - 931.2 Physical Properties of Gases, Liquids and Solids - 715 Electronic Equipment, General Purpose and Industrial - 714 Electronic Components and Tubes - 711 Electromagnetic Waves - 714.2 Semiconductor Devices and Integrated Circuits
DOI:10.1117/12.868906
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 222>
Accession number:20101912922257
Title:Ultrahigh speed all-optical AND logic gate using integrated silicon-based MZI device
Authors:Wu, Jian-Wei (1)
Author affiliation:(1) Institute of Optoelectronics Science, College of Science, Hohai University, Nanjing 210098, China; (2) State Key Laboratory of Transient Optics and Photonics, Chinese Academy of Sciences, Xi'an 710119, China
Corresponding author:Wu, J.-W.(jwwu@hhu.edu.cn)
Source title:Journal of Modern Optics
Abbreviated source title:J. Mod. Opt.
Volume:57
Issue:6
Issue date:March 2010
Publication year:2010
Pages:460-465
Language:English
ISSN:09500340
E-ISSN:13623044
CODEN:JMOPEW
Document type:Journal article (JA)
Publisher:Taylor and Francis Ltd., 4 Park Square, Milton Park, Abingdon, Oxfordshire, OX14 4RN, United Kingdom
Abstract:In this paper, we present a device with a silicon-on-insulator (SOI) based symmetrical Mach-Zehnder interferometer (MZI) structure to perform the ultrahigh speed all-optical AND logic gate function. Simulation results show that, while the operation speed is at a bit rate of 200 Gbit <sup>-1</sup>, the output parameters including extinction ratio and eye-opening ratio for outcome AND logic gate signal can, respectively, reach as high as∼12.8 dB, and ∼0.94 in the case of a 5 mm long SOI waveguide by means of judiciously adjusting the initial conditions, such as incident signal and probe continuous-wave (CW) powers. © 2010 Taylor & Francis.
Number of references:21
Main heading:Silicon on insulator technology
Controlled terms:Integrated optics - Logic gates - Mach-Zehnder interferometers - Optical instruments - Optical materials - Photonics
Uncontrolled terms:All-optical - AND logic gate - Bit rates - Continuous-wave power - Extinction ratios - Incident signals - Initial conditions - Opening ratio - Operation speed - Output parameters - Silicon-based - Silicon-on-insulators - Simulation result - SOI waveguides - Ultra high speed
Classification code:941.3 Optical Instruments - 744 Lasers - 741.3 Optical Devices and Systems - 741.1 Light/Optics - 721.3 Computer Circuits - 721.2 Logic Elements - 717 Optical Communication - 714.2 Semiconductor Devices and Integrated Circuits - 712 Electronic and Thermionic Materials
DOI:10.1080/09500341003692971
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 223>
Accession number:20104913464898
Title:Experimental research on image motion measurement using optical joint transform correlator for space camera application
Authors:Zhao, Hui (1); Yi, Hongwei (1); Li, Yingcai (1); Che, Chicheng (2); Xiao, Xiao (3)
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Science, No. 17 Xinxi Road, Xi'an, 710119, China; (2) Huazhong Institute of Electro-Optics, Wuhan National Laboratory for Optoelectronics, Wuhan, 430074, China; (3) Xidian University, School of Telecommunications Engineering, Xi'an, 710071, 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:7830
Monograph title:Image and Signal Processing for Remote Sensing XVI
Issue date:2010
Publication year:2010
Article number:78301D
Language:English
ISSN:0277786X
CODEN:PSISDG
ISBN-13:9780819483478
Document type:Conference article (CA)
Conference name:Image and Signal Processing for Remote Sensing XVI
Conference date:September 20, 2010 - September 22, 2010
Conference location:Toulouse, France
Conference code:82656
Sponsor:The Society of Photo-Optical Instrumentation Engineers (SPIE)
Publisher:SPIE, P.O. Box 10, Bellingham, WA 98227-0010, United States
Abstract:The optical joint transform correlator (JTC) is an effective way to measure the image motion that is hard to be eliminated for space camera. In this manuscript, the principle of JTC is briefly introduced and then a static experiment is designed to demonstrate the suitability of JTC for space camera application. The results demonstrate that the RMS (root-mean-square) error of motion determination can be controlled below 0.15 pixels in both the horizontal and vertical direction, which is good enough to satisfy the space camera requirements. Besides that, the performance of two methods used to locate the cross-correlation peak is also evaluated. Compared with the traditional centroid computing method, Intensity Weighting Centroiding (IWC) is superior because it can not only reduce the sensitiveness of cross-correlation peak to window size selection, but also improves measurement accuracy. © 2010 Copyright SPIE - The International Society for Optical Engineering.
Number of references:8
Main heading:Space optics
Controlled terms:Cameras - Measurements - Optical correlation - Remote sensing - Signal processing
Uncontrolled terms:centroid computing - Image motion - joint transform correlator - Root mean squares - Space cameras
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 - 742.2 Photographic Equipment - 731.1 Control Systems - 716.1 Information Theory and Signal Processing - 741.1 Light/Optics
DOI:10.1117/12.864658
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 224>
Accession number:20103113111580
Title:Ultrashort optical pulse monitoring using asynchronous optical sampling technique in highly nonlinear fiber
Authors:Tang, Dingkang (1); Zhang, Jianguo (1); Liu, Yuanshan (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 710068, China; (2) Graduate University, Chinese Academy of Sciences, Beijing 100049, China; (3) Department of Electrical, Computer and Communications Engineering, London South Bank University, London SE1 0AA, UK, United Kingdom
Corresponding author:Tang, D.(tangdingkang@opt.ac.cn)
Source title:Chinese Optics Letters
Abbreviated source title:Chin. Opt. Lett.
Volume:8
Issue:7
Issue date:July 2010
Publication year:2010
Pages:630-633
Language:English
ISSN:16717694
Document type:Journal article (JA)
Publisher:Science Press, 18,Shuangqing Street,Haidian, Beijing, 100085, China
Abstract:An asynchronous optical sampling scheme based on four-wave mixing (FWM) in highly nonlinear fiber (HNLF) is experimentally demonstrated. Based on this scheme, 10-GHz input pulse train with 1.8-ps pulse width is successfully sampled in 100-m HNLF. A single pulse at 10 GHz with 2.3-ps pulse width is rebuilt by using a 50-MHz frequency tunable free-running fiber laser as the sampling pulse source (SPS). 40-GHz pulse train is used as the input signal. The rebuilt waveforms, together with the low-jitter eye diagram, are also presented. © 2010 Chinese Optics Letters.
Number of references:21
Main heading:Pulsed laser applications
Controlled terms:Fiber lasers - Four wave mixing - Jitter - Ultrashort pulses
Uncontrolled terms:Asynchronous optical samplings - Eye diagrams - Highly nonlinear fibers - Input pulse - Input signal - Pulse sources - Pulse train - Pulse width - Single pulse - Ultrashort optical pulse - Wave forms
Classification code:744.4 Solid State Lasers - 744.1 Lasers, General - 741.1.2 Fiber Optics - 741.1 Light/Optics - 744.9 Laser Applications - 722.3 Data Communication, Equipment and Techniques - 717 Optical Communication - 716 Telecommunication; Radar, Radio and Television - 711.1 Electromagnetic Waves in Different Media - 718 Telephone Systems and Related Technologies; Line Communications
DOI:10.3788/COL20100807.0630
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 225>
Accession number:20105213529034
Title:Hierarchical segmentation based on a multilevel thresholding
Authors:Ma, Junyong (1); Wen, Desheng (1); Yang, Shaodong (1); Wang, Liang (1); Zhan, Jianming (1)
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, China
Corresponding author:Ma, J.
Source title:Proceedings - 2010 3rd International Congress on Image and Signal Processing, CISP 2010
Abbreviated source title:Proc. - Int. Congr. Image Signal Process., CISP
Volume:3
Monograph title:Proceedings - 2010 3rd International Congress on Image and Signal Processing, CISP 2010
Issue date:2010
Publication year:2010
Pages:1396-1400
Article number:5648275
Language:English
ISBN-13:9781424465149
Document type:Conference article (CA)
Conference name:2010 3rd International Congress on Image and Signal Processing, CISP 2010
Conference date:October 16, 2010 - October 18, 2010
Conference location:Yantai, China
Conference code:83091
Sponsor:Yantai University
Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States
Abstract:Segmentation plays an important role in image processing, machine vision, pattern recognition and so on. Numerous segmentation methods based on bi-level thresholding have been proposed, assuming there are only two main populations in an image. However, for a complex image consisting of more populations, a multilevel thresholding is required. This paper presents a new hierarchical segmentation method based on multilevel thresholding. The hierarchical segmentation utilizes an iterative threshold selection method as a basis to partition an image into two regions. Similarly, every region is segmented into two parts. This process continues until a better segmentation is obtained. Several objective measures are considered to evaluate the quality of segmentation. The experimental results indicate the proposed method can obtain an effective segmentation for an image with more populations. ©2010 IEEE.
Number of references:15
Main heading:Image segmentation
Controlled terms:Computer vision - Quality control - Signal processing
Uncontrolled terms:Bilevel thresholding - Complex image - Hierarchical segmentation - Iterative threshold - Machine vision - Multilevel thresholding - Objective measure - Segmentation - Segmentation evaluation - Segmentation methods
Classification code:716.1 Information Theory and Signal Processing - 723.5 Computer Applications - 741.1 Light/Optics - 913.3 Quality Assurance and Control
DOI:10.1109/CISP.2010.5648275
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 226>
Accession number:20105113512528
Title:Design of multi-spectral adaptive spectrometer based on Hadamard transform
Authors:Shao, Xiu-Juan (1); Hu, Bing-Liang (1); Yan, Peng (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) Graduate School of Chinese Academy of Sciences, Beijing 100039, China
Corresponding author:Shao, X.-J.(shaoxiujuan@opt.ac.cn)
Source title:Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering
Abbreviated source title:Hongwai yu Jiguang Gongcheng Infrared Laser Eng.
Volume:39
Issue:5
Issue date:October 2010
Publication year:2010
Pages:963-966
Language:Chinese
ISSN:10072276
Document type:Journal article (JA)
Publisher:Chinese Society of Astronautics, P.O. Box 225-32, Tianjin, 300192, China
Abstract:Spectral characteristics can be used to reveal surface composition and then recognize the target. In this paper, the principles of Hadamard transform based multi-channel detection and imaging spectrometer were discussed. A Hadamard transform multi-spectral adaptive imaging spectrometer based on digital micro-mirror device (DMD) was designed and developed. The spectrum of the target used this imaging spectrometer in the experiment was successfully restored. Since each substance had its unique spectrum, the curve of spectrum recuperated form the experimental data could be used to distinguish the practical composition of the target. The spectrum curve obtained in the laboratory with the international standard spectrum curve were compared as well. The result shows that the average error of spectrum curve obtained in the laboratory compared with the international standard spectum is less than 4%.
Number of references:9
Main heading:Spectrometers
Controlled terms:Earthquake resistance - Spectrometry
Uncontrolled terms:Adaptive imaging - Adaptive spectrometer - Average errors - Digital micro-mirror device - DMD - Experimental data - Hadamad transform - Hadamard transforms - Imaging spectrometers - International standards - Multi-spectral - Multichannel detection - Spectral characteristics - Spectral reversion - Surface compositions - Unique spectra
Classification code:408 Structural Design - 483 Soil Mechanics and Foundations - 801 Chemistry
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 227>
Accession number:20110213570547
Title:Dynamic evolution of temporal dissipative-soliton molecules in large normal path-averaged dispersion 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:82
Issue:6
Issue date:December 28, 2010
Publication year:2010
Article number:063834
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 robust dissipative soliton molecules (DSM's) exhibiting as the quasirectangular spectral profile are investigated numerically and observed experimentally in mode-locked fiber lasers with the large normal path-averaged dispersion and the large net cavity dispersion. These DSM's have an independently evolving phase with a pulse duration T<inf>0</inf> of about 20 ps and a peak-to-peak separation of about 8T<inf>0</inf>. Under laboratory conditions, the proposed laser delivers vibrating DSM's with an oscillating amplitude of less than a percent of peak separation. Numerical simulations show that DSM's are characterized by a spectral modulation pattern with about a 3-dB modulation depth measured as an averaged value. The experimental observations are in excellent agreement with the numerical predictions. © 2010 The American Physical Society.
Number of references:39
Main heading:Mode-locked fiber lasers
Controlled terms:Dispersions - Fiber lasers - Solitons - Spectroscopy
Uncontrolled terms:Dissipative solitons - Dynamic evolution - Experimental observation - Laboratory conditions - Modulation depth - Numerical predictions - Numerical simulation - Oscillating amplitudes - Peak separations - Peak-to-peak separation - Pulse durations - Soliton molecules - Spectral modulation - Spectral profile
Classification code:744.1 Lasers, General - 744.4 Solid State Lasers - 801 Chemistry - 931.3 Atomic and Molecular Physics - 951 Materials Science
DOI:10.1103/PhysRevA.82.063834
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 228>
Accession number:20104813422498
Title:Robust adaptive control of free-floating space robot based on fuzzy compensation
Authors:Liu, Shuang (1); Ma, Caiwen (1); Luo, Cuihua (1); Wang, Xiaobai (1)
Author affiliation:(1) Photoelectric Measurement and Control Technology Research Department, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, China
Corresponding author:Liu, S.
Source title:Proceedings - 2010 7th International Conference on Fuzzy Systems and Knowledge Discovery, FSKD 2010
Abbreviated source title:Proc. - Int. Conf. Fuzzy Syst. Knowl. Discov., FSKD
Volume:2
Monograph title:Proceedings - 2010 7th International Conference on Fuzzy Systems and Knowledge Discovery, FSKD 2010
Issue date:2010
Publication year:2010
Pages:720-725
Article number:5569382
Language:English
ISBN-13:9781424459346
Document type:Conference article (CA)
Conference name:2010 7th International Conference on Fuzzy Systems and Knowledge Discovery, FSKD 2010
Conference date:August 10, 2010 - August 12, 2010
Conference location:Yantai, Shandong, China
Conference code:82352
Sponsor:Yantai University
Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States
Abstract:This paper proposes an adaptive controller for a free-floating space robot (FFSR) in the presence of kinematic and dynamic model uncertainties. Because of high dynamical coupling between the actively operated manipulator and the free-floating base, two inherent difficulties exist, such as non-linear parameterization of the dynamic equation and both kinematic and dynamic parameter uncertainties. In order to compensate these uncertainties, we use the fuzzy logic system (FLS) that has the capability to approximate any nonlinear function. The proposed adaptive controller does not involve complex calculations, but it is still possible for the system to generate a suitable input torque and a compensator to overcome the uncertainties. Then, the stability is proved and the structure of the control method is given. To verify the validity of the proposed method, a computer simulation of a two-link planar FFSR is carried out. ©2010 IEEE.
Number of references:12
Main heading:Adaptive control systems
Controlled terms:Computer simulation - Control theory - Controllers - Fuzzy logic - Fuzzy sets - Kinematics - Uncertainty analysis
Uncontrolled terms:Adaptive Control - Adaptive controllers - Control methods - Dynamic equations - Dynamic parameters - Dynamical coupling - FFSR - Floating base - Free-floating space robot - Fuzzy compensation - Fuzzy logic system - Model uncertainties - Non-linear - Nonlinear functions - Robust-adaptive control - Two-link
Classification code:931.1 Mechanics - 922.1 Probability Theory - 921 Mathematics - 732.1 Control Equipment - 731.1 Control Systems - 723.5 Computer Applications - 721.1 Computer Theory, Includes Formal Logic, Automata Theory, Switching Theory, Programming Theory
DOI:10.1109/FSKD.2010.5569382
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 229>
Accession number:20101412822668
Title:All-fiber mode-locked nanosecond laser employing intracavity chirped fiber gratings
Authors:Wang, Hushan (1); Wang, Yishan (1); Zhao, Wei (1); Zhang, Wei (1); Zhang, Ting (1); Hu, Xiaohong (1); Yang, Zhi (1); Liu, Hongjun (1); Duan, Kailiang (1); Liu, Xuemin (1); Li, Cheng (1); Shen, Deyuan (1); Sui, Zhan (2); Liu, Bin (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) Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang 621900, China; (3) Department of EEIS, University of Science and Technology of China, Hefei, Anhui 230027, China; (4) Hefei Sunshine Optoelectronics Science, Technology co., Ltd, Hefei 230088, China
Corresponding author:Wang, H.
Source title:Optics Express
Abbreviated source title:Opt. Express
Volume:18
Issue:7
Issue date:March 29, 2010
Publication year:2010
Pages:7263-7268
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 that nanosecond pulses are generated directly from an all-fiber mode-locked ytterbium-doped fiber laser. A pair of Chirped Fiber Gratings (CFGs) with different sign of dispersion is employed for intracavity dispersion management. Self-starting stabilized mode-locking operation is achieved by nonlinear polarization evolution (NPE). The 1.27 ns pulses are obtained after one CFG with large positive dispersion. The pulse energy is up to 15 nJ at a repetition rate of 3.48 MHz. © 2010 Optical Society of America.
Number of references:22
Main heading:Mode-locked fiber lasers
Controlled terms:Dispersions - Fiber lasers - Fibers - Pulse repetition rate - Pulsed laser applications - Ytterbium
Uncontrolled terms:All fiber - Chirped fiber grating - Intra-cavity dispersion - Intracavities - Modelocking - Nanosecond lasers - Nanosecond pulse - Nonlinear polarization evolution - Pulse energies - Repetition rate - Self-starting - Ytterbium-doped fiber lasers
Classification code:819.4 Fiber Products - 817 Plastics and Other Polymers: Products and Applications - 812 Ceramics, Refractories and Glass - 801.3 Colloid Chemistry - 951 Materials Science - 744.9 Laser Applications - 744.1 Lasers, General - 741.1.2 Fiber Optics - 547.2 Rare Earth Metals - 744.4 Solid State Lasers
DOI:10.1364/OE.18.007263
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 230>
Accession number:20102212974716
Title:Spectrum recovery methods for nonuniform sampling interferogram
Authors:Yao, Tao (1); Lü, Qun-Bo (2); Xiangli, Bin (2); Yuan, Yan (3)
Author affiliation:(1) 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 100080, China; (3) School of Instrument Science and Opto-electronics Engineering, Beihang University, Beijing 100083, China; (4) Graduate University, Chinese Academy of Sciences, Beijing 100049, China
Corresponding author:Lü, Q.-B.
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:30
Issue:5
Issue date:May 2010
Publication year:2010
Pages:1430-1433
Language:Chinese
ISSN:10000593
CODEN:GYGFED
Document type:Journal article (JA)
Publisher:Science Press, 18,Shuangqing Street,Haidian, Beijing, 100085, China
Abstract:The interferogram acquired by imaging Fourier transform spectrometer (IFTS) can't be used directly and must be recovered. The spectrum recovery processes based on fast Fourier transform (FFT) is the traditional method which is used widely. For some IFTS, the nonuniform sampling of the interferogram is often occurrs. When the aliasing is neglected, the spectrum recovered by traditional method is often distorted. When the spectrum recovery processes based on Fourier transform are used, the precision of the recovered spectrum can be ensured, but the real-time processing requirement can't be satisfied. In order to acquire the precise recovered spectrum of the nonuniform sampled interferogram, the interpolation method and nonuniform fast Fourier transform (NUFFT) method were adopted. For the oversampled interferogram and partial undersampled interferogram, the spectrum recovery methods based on interpolation and NUFFT were presented respectively, and the applicability of these two methods is given. Finally, the computer simulation was performed, and the results indicate that NUFFT method is preferable to interpolation method not for undersampled interferogram but for oversampled interferogram.
Number of references:13
Main heading:Interferometry
Controlled terms:Computer simulation - Fast Fourier transforms - Interpolation - Recovery
Uncontrolled terms:Aliasing - Imaging Fourier transform spectrometer - Interferogram - Interferograms - Interpolation method - Non-uniform fast Fourier transforms - Nonuniform - Nonuniform sampling - Oversampled - Realtime processing - Recovery process - Spectral aliasing
Classification code:531 Metallurgy and Metallography - 622.5 Radioactive Wastes - 723.5 Computer Applications - 921.3 Mathematical Transformations - 921.6 Numerical Methods - 941.4 Optical Variables Measurements
DOI:10.3964/j.issn.1000-0593(2010)05-1430-04
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 231>
Accession number:20105013479798
Title:Aberration analysis and design of four-mirror reflective optical system
Authors:Liang, Shitong (1); Yang, Jianfeng (1); Xue, Bin (1); Ruan, Ping (1); Wang, Hongwei (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:Liang, S.(liangshitong@yahoo.cn)
Source title:Guangxue Xuebao/Acta Optica Sinica
Abbreviated source title:Guangxue Xuebao
Volume:30
Issue:11
Issue date:November 2010
Publication year:2010
Pages:3300-3305
Language:Chinese
ISSN:02532239
CODEN:GUXUDC
Document type:Journal article (JA)
Publisher:Chinese Optical Society, P.O. Box 80, Xi'an, 710068, China
Abstract:Reflective optical systems have small size, light weight and excellent imaging performance, which makes it very popular in space remote sensing systems. The third order aberration expression and basic design process of four-mirror system are given by aberration analysis based on PW method. Two space remote sensing systems using coaxial and abaxial four-mirror system is designed under the guidance of the aberration theory. The two systems have excellent imaging performance. The systems have compact structure and the physical length to the EFL ratio is about 1/6.4. Both of the size and weight meet the technical requirements, the correctness and practicality of the theoretical analysis are proved.
Number of references:11
Main heading:Optical systems
Controlled terms:Cameras - Mirrors - Remote sensing - Space optics
Uncontrolled terms:Aberration analysis - Aberration theory - Compact structures - Design process - Four-mirror optical system - Imaging performance - Light weight - Mirror systems - Physical length - Reflective optical system - Small size - Space cameras - Space remote sensing - Technical requirement - Third-order aberration
Classification code:731.1 Control Systems - 741.1 Light/Optics - 741.3 Optical Devices and Systems - 742.2 Photographic Equipment
DOI:10.3788/AOS20103011.3300
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 232>
Accession number:20104613383573
Title:Optical design of imaging spectrometer based on acousto-optic tunable filter
Authors:Chang, Lingying (1); Zhao, Baochang (1); Qiu, Yuehong (1); Wen, Desheng (1); Ma, Xiaolong (1)
Author affiliation:(1) Space Optical Technology Research Department, 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:Chang, L.(lychang@opt.ac.cn)
Source title:Guangxue Xuebao/Acta Optica Sinica
Abbreviated source title:Guangxue Xuebao
Volume:30
Issue:10
Issue date:October 2010
Publication year:2010
Pages:3021-3026
Language:Chinese
ISSN:02532239
CODEN:GUXUDC
Document type:Journal article (JA)
Publisher:Chinese Optical Society, P.O. Box 80, Xi'an, 710068, China
Abstract:In order to acquire space, spectrum, and polarization information, the optical system which is applied to acousto-optic tunable filter(AOTF) imaging spectrometer is designed. The work principle of AOTF is described, then on the basis of instrument and system considerations, the optical parameters of the telescope and collimating optics are distributed reasonably. The optical design software CODE-V is used for the design, optimization and analysis of the optical system, and a refractive grating halfway along the crystal is used to simulate the effects of the AOTF. The +1 and -1 orthogonally polarized orders are produced by the AOTF at the same time. The whole system is achromatized from 400~900 nm using only three types of glass and imaging resolution excelled 32 lp/mm when the modulation transfer function (MTF) reaches 0.75.
Number of references:14
Main heading:Software design
Controlled terms:Acoustooptical effects - Optical design - Optical systems - Polarization - Spectrometers - Spectrometry
Uncontrolled terms:Acousto-optic tunable filters - Collimating optics - Imaging resolutions - Imaging spectrometers - Modulation transfer function - Optical parameter - Optical-design software - Whole systems - Work principle
Classification code:723.1 Computer Programming - 741.1 Light/Optics - 741.3 Optical Devices and Systems
DOI:10.3788/AOS20103010.3021
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 233>
Accession number:20105013487473
Title:New method to improve measurement accuracy of modulation transfer function
Authors:Song, Zongxi (1); Gao, Wei (1); Zhou, Yan (3); Liu, Feng (1)
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, CAS, Xi'an 710119, China; (2) Graduate School of the Chinese Academy Sciences, Beijing 100039, China; (3) Xi'an Jiaotong University, Xi'an 710049, China
Corresponding author:Song, Z.
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:7656
Issue:PART 1
Monograph title:5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment
Issue date:2010
Publication year:2010
Article number:76561N
Language:English
ISSN:0277786X
CODEN:PSISDG
ISBN-13:9780819480866
Document type:Conference article (CA)
Conference name:5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment
Conference date:April 26, 2010 - April 29, 2010
Conference location:Dalian, China
Conference code:82772
Sponsor:The Chinese Optical Society (COS); CAS, The Institute of Optics and Electronics (IOE); The Society of Photo-Optical Instrumentation Engineers (SPIE)
Publisher:SPIE, P.O. Box 10, Bellingham, WA 98227-0010, United States
Abstract:Modulation transfer function (MTF) of optical systems is often derived by taking Fourier transform (FT) of a measured line spread function (LSF). During MTF measurement process, the measurement accuracy of MTF will decrease as a result when LSF computed is not veracity. Based on the model constructed using the variance information of knife-edge and skew of the knife-edge, this paper presents a new method to improve the accuracy of measurement of MTF. The results showed that the new method can improve the accuracy of MTF to 0.01. © 2010 Copyright SPIE - The International Society for Optical Engineering.
Number of references:16
Main heading:Transfer functions
Controlled terms:Fourier transforms - Manufacture - Measurement theory - Modulation - Optical testing - Optical transfer function - Technology
Uncontrolled terms:accuracy - Edge spread function - Line spread functions - modulation transfer function (MTF) - variance
Classification code:922 Statistical Methods - 921.3 Mathematical Transformations - 901 Engineering Profession - 741.3 Optical Devices and Systems - 741.1 Light/Optics - 718 Telephone Systems and Related Technologies; Line Communications - 717 Optical Communication - 716 Telecommunication; Radar, Radio and Television - 537.1 Heat Treatment Processes
DOI:10.1117/12.867707
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 234>
Accession number:20104313323773
Title:Self-stabilization target tracking technology based on mobile platform
Authors:Wang, Chen (1); Ma, Cai-Wen (1); Liang, Yan-Bing (1); Chen, Er-Rui (1)
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics of Chinese Academy of Science, Xi'an 710119, China; (2) Graduate School of Chinese Academy of Science, Beijing 100039, China
Corresponding author:Wang, C.(wangchen@opt.ac.cn)
Source title:Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering
Abbreviated source title:Hongwai yu Jiguang Gongcheng Infrared Laser Eng.
Volume:39
Issue:4
Issue date:August 2010
Publication year:2010
Pages:644-648+693
Language:Chinese
ISSN:10072276
Document type:Journal article (JA)
Publisher:Chinese Society of Astronautics, P.O. Box 225-32, Tianjin, 300192, China
Abstract:The self-stabilization tracking technique is the key technique for theodolite tracking based on the mobile platform. To improve the tracking and positioning accuracy, the self-stabilization tracking technique based on mobile platform was studied. In the technique, the position of object was transformed from the platform coordinate system to the earth coordinate system by using coordinate transform. A method of forecast tracking technique based on mobile platform was presented. The former complex angle was transformed from the platform coordinate to the earth coordinate and the next complex angle was forecasted according to the trajectory of the complex angle. In the end, the forecast result was transformed back to the platform coordinate. By this means, the stable tracking technique based on mobile platform was realized. In comparison with the direct forecast result in platform coordinate, the forecast technique presented in the paper is more accurate and appropriate to realize stable tracking on mobile platform.
Number of references:10
Main heading:Target tracking
Controlled terms:Forecasting - Mobile phones - Stabilization
Uncontrolled terms:Co-ordinate system - Co-ordinate transform - Complex angle - Key techniques - Mobile platform - Positioning accuracy - Self-stabilization - Theodolite - Tracking techniques - Tracking technology
Classification code:716.2 Radar Systems and Equipment - 718.1 Telephone Systems and Equipment - 921 Mathematics - 951 Materials Science
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 235>
Accession number:20101612869415
Title:New adaptive threshold filtering for fiber optic gyroscopes
Authors:Liu, Ying (1); Li, Yan (1); Xu, Jin-Tao (2)
Author affiliation:(1) Faculty of Mechanical and Precision Instrument Engineering, Xi'an University of Technology, 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:Liu, Y.(ly676@163.com)
Source title:Yingyong Kexue Xuebao/Journal of Applied Sciences
Abbreviated source title:Yingyong Kexue Xuebao
Volume:28
Issue:1
Issue date:January 2010
Publication year:2010
Pages:56-59
Language:Chinese
ISSN:02558297
Document type:Journal article (JA)
Publisher:Shanghai Science and Technology Press, P.O. Box 123, 99 Shangda Road, Shanghai, 200444, China
Abstract:Through Lipschitz index analysis of changes in wavelet factor of the signal and noise in different discrete scales, the signal model of fiber optic gyroscope (FOG) is established. Based on the discrete wavelet transform, a new adaptive filtering algorithm is studied. This algorithm can automatically adjust the threshold values of the wavelet coefficients at different scales in accordance with the energy level of FOG's output signal. Thus, a new threshold function is obtained, which weakens wavelet coefficients lower than the threshold and maximally reserves the true signal using a multinomial. Compared with the soft and hard threshold function, the new threshold function shows perfect performance with different SNR. Simulation shows that, compared with traditional fixed threshold wave filtering, the new method can effectively eliminate noise, and improve FOG's bias stability, random walking and other technique parameters.
Number of references:11
Main heading:Adaptive algorithms
Controlled terms:Adaptive filtering - Adaptive filters - Discrete wavelet transforms - Fiber optics - Fibers - Fog - Gyroscopes - Optical materials
Uncontrolled terms:Adaptive - Adaptive filtering algorithms - Adaptive threshold filtering - Bias stability - Different scale - Energy level - Fiber optic gyroscopes - Fixed threshold - Lipschitz - Multinomials - Output signal - Signal models - Threshold functions - Wavelet coefficients
Classification code:943.1 Mechanical Instruments - 921.3 Mathematical Transformations - 921 Mathematics - 819.4 Fiber Products - 817 Plastics and Other Polymers: Products and Applications - 812 Ceramics, Refractories and Glass - 741.3 Optical Devices and Systems - 741.1.2 Fiber Optics - 731.1 Control Systems - 723 Computer Software, Data Handling and Applications - 443.1 Atmospheric Properties
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 236>
Accession number:20110213573310
Title:Experimental research for broadband spatial heterodyne spectroscopy
Authors:Feng, Yutao (1); Bai, Qinglan (1); Yan, Peng (1); Hu, Bingliang (1); Wen, Desheng (1)
Author affiliation:(1) Key Laboratory of Spectral Imaging Technology of Chinese Academy of Science, Xi'an Institute of Opticas and Precision Mechanics, CAS, Xian 710119, China
Corresponding author:Feng, Y.
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:7850
Monograph title:Optoelectronic Imaging and Multimedia Technology
Issue date:2010
Publication year:2010
Article number:78501U
Language:English
ISSN:0277786X
CODEN:PSISDG
ISBN-13:9780819483805
Document type:Conference article (CA)
Conference name:Optoelectronic Imaging and Multimedia Technology
Conference date:October 18, 2010 - October 20, 2010
Conference location:Beijing, China
Conference code:83248
Sponsor:The Society of Photo-Optical Instrumentation Engineers (SPIE); Chinese Optical Society (COS)
Publisher:SPIE, P.O. Box 10, Bellingham, WA 98227-0010, United States
Abstract:Spatial heterodyne spectrometers have been used in multiple scientific studies since their invention and early development. Broadband spatial heterodyne spectrometers also have the advantages of large etendue, high spectral resolving powers, and high data collection rates as traditional spatial heterodyne spectrometer. Basic theory, design and performance parameters, breadboard experiment for a broadband, high-resolution spatial heterodyne spectrometer are reported. The experimental spatial heterodyne spectrometer achieves a design resolution 0.39cm-1. Firstly, it is demonstrated that broadband spatial heterodyne spectrometer have the advantages of wide spectral coverage and high spectral resolving power simultaneously; secondly, the effects of optical defects on the system are discussed; thirdly, Two dimension interference data procession also is mentioned. © 2010 SPIE.
Number of references:10
Main heading:Spectrometers
Controlled terms:Fourier transforms - Heterodyning - Optical resolving power - Remote sensing - Spectrometry
Uncontrolled terms:Basic theory - Data collection rates - Etendue - Experimental research - High resolution - Interference data - Optical defects - Performance parameters - Scientific studies - Spatial heterodyne - Spatial heterodyne spectroscopies - Spectral coverage - Spectral range - Spectral resolving power - Two-dimension
Classification code:716 Telecommunication; Radar, Radio and Television - 731.1 Control Systems - 741.1 Light/Optics - 801 Chemistry - 921.3 Mathematical Transformations
DOI:10.1117/12.870229
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 237>
Accession number:20101812909864
Title:Spatial and temporal evolution of transient stimulated-Brillouin-scattering slow-light pulse in an optical fiber
Authors:Ren, Liyong (1); Yang, Yanlong (1); Zhao, Wei (1); Tomita, Yasuo (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) Department of Electronics Engineering, University of Electro-Communications, 1-5-1 Chofugaoka, Chofu, Tokyo 182-8585, Japan
Corresponding author:Ren, L.(renliy@opt.ac.cn)
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:7612
Monograph title:Advances in Slow and Fast Light III
Issue date:2010
Publication year:2010
Article number:761207
Language:English
ISSN:0277786X
CODEN:PSISDG
ISBN-13:9780819480088
Document type:Conference article (CA)
Conference name:Advances in Slow and Fast Light III
Conference date:January 25, 2010 - January 26, 2010
Conference location:San Francisco, CA, United states
Conference code:80076
Sponsor:The Society of Photo-Optical Instrumentation Engineers(SPIE)
Publisher:SPIE, P.O. Box 10, Bellingham, WA 98227-0010, United States
Abstract:Slow-light technology via stimulated Brillouin scattering (SBS) in an optical fiber has attracted a lot of attention owing to its flexible gain spectrum tailoring capacity, good compatibility with existing telecommunication systems, and great application for photonic switchers and routers in ultra-high-speed photonic networks. In this paper we present a general theoretical model for analyzing the dynamic behavior of the nonlinear interactions of the transient SBS process based on the three-wave coupled-amplitude equations for the pump, Stokes and acoustic waves. Spatial and temporal evolution of a generating slow-light pulse with the duration of sub-nanosecond under double broadband pump case is accurately simulated owing to the fact that our model includes the second-order derivative of the acoustic field. We conclude that the origin of the pulse broadening and distortion can be explained in terms of the temporal decay of the induced acoustic field. © 2010 Copyright SPIE - The International Society for Optical Engineering.
Number of references:20
Main heading:Stimulated Brillouin scattering
Controlled terms:Acoustic field measurement - Acoustic fields - Acoustic waves - Computer simulation - Crystal whiskers - Electric switchgear - Fibers - Light polarization - Light transmission - Nonlinear equations - Optical fibers - Optical materials - Photonic crystal fibers - Photonic crystals - Pulse generators - Pumps - Scattering - Signal distortion - Slow light - Ultrasonics - Wave equations
Uncontrolled terms:Amplitude equation - Brillouin - Dynamic behaviors - Gain spectra - Good compatibility - Nonlinear interactions - Photonic network - Pulse broadening - Pulse distortion - Second order derivatives - Slow-light pulse - Stimulated Brillouin scattering (SBS) - Temporal decay - Temporal evolution - Theoretical models - Ultra high speed
Classification code:753.1 Ultrasonic Waves - 801.4 Physical Chemistry - 812 Ceramics, Refractories and Glass - 817 Plastics and Other Polymers: Products and Applications - 819.4 Fiber Products - 751.2 Acoustic Properties of Materials - 921.1 Algebra - 933.1 Crystalline Solids - 933.1.1 Crystal Lattice - 941.2 Acoustic Variables Measurements - 951 Materials Science - 921.2 Calculus - 751.1 Acoustic Waves - 618.2 Pumps - 704.2 Electric Equipment - 706.2 Electric Power Lines and Equipment - 711 Electromagnetic Waves - 713.4 Pulse Circuits - 531.2 Metallography - 716.1 Information Theory and Signal Processing - 741.1 Light/Optics - 741.1.2 Fiber Optics - 741.3 Optical Devices and Systems - 751 Acoustics, Noise. Sound - 723.5 Computer Applications
DOI:10.1117/12.840631
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 238>
Accession number:20100612693465
Title:Effect of structural modifications on the switching voltage of a holographic polymer-dispersed liquid crystal lattice
Authors:Milavec, J. (1); Devetak, M. (1); Li, J. (2); Rupp, R.A. (2); Yao, B. (4); Drevenšek-Olenik, I. (1)
Author affiliation:(1) Department of Complex Matter, J Stefan Institute, Ljubljana, Slovenia; (2) TEDA Applied Physics School and School of Physics, Nankai University, Tianjin 300457, China; (3) Nonlinear Physics Group, Faculty of Physic, University of Vienna, Boltzmanngasse 5, A-1090 Vienna, Austria; (4) State Key Laboratory of Transient Optics and Photonics, Xian Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xian 710119, China; (5) Faculty of Mathematics and Physics, University of Ljubljana, Ljubljana, Slovenia
Corresponding author:Milavec, J.
Source title:Journal of Optics A: Pure and Applied Optics
Abbreviated source title:J Opt A Pure Appl Opt
Volume:12
Issue:1
Issue date:2010
Publication year:2010
Article number:015106
Language:English
ISSN:14644258
E-ISSN:17413567
CODEN:JOAOF8
Document type:Journal article (JA)
Publisher:Institute of Physics Publishing, Temple Back, Bristol, BS1 6BE, United Kingdom
Abstract:The effect of temperature-induced variations of the nematic director field on the switching voltage of a 2D square holographic polymer-dispersed liquid crystal (HPDLC) lattice was investigated for a mixture prepared from UV-curable commercially available constituents. At temperatures far below the nematic-isotropic phase transition, the switching voltage is governed by the domain structure of the director field, while at temperatures close to the phase transition it is governed by elastic and dielectric properties of the liquid crystal (LC) material. The crossover occurs at the temperature at which a thin interface region between the LC domains and the polymer pilasters is melted into the isotropic phase. We also performed a comparative study of the square lattices recorded with the use of four and three coherent beams and resolved numerous differences in their structural and switching properties that arise from different spatial profiles of the associated interference fields. © 2010 IOP Publishing Ltd.
Number of references:39
Main heading:Phase transitions
Controlled terms:Crystal lattices - Curing - Dielectric properties - Liquid crystal polymers - Liquid crystals - Liquids - Lithography - Phase interfaces - Photonic crystals - Switching
Uncontrolled terms:Coherent beams - Comparative studies - Director fields - Domain structure - Effect of temperature - Holographic lithography - Holographic polymer dispersed liquid crystal - Interface regions - Interference field - Isotropic phase - Nematic director - Nematic isotropic phase transition - Polymer dispersed liquid crystals - Spatial profiles - Square lattices - Structural modifications - Switching properties - Switching voltages - UV curable
Classification code:804 Chemical Products Generally - 815.1 Polymeric Materials - 815.1.1 Organic Polymers - 802.2 Chemical Reactions - 818.3 Rubber and Elastomer Processing - 933.1 Crystalline Solids - 933.1.1 Crystal Lattice - 931.2 Physical Properties of Gases, Liquids and Solids - 801.4 Physical Chemistry - 641.1 Thermodynamics - 701 Electricity and Magnetism - 708.1 Dielectric Materials - 531.2 Metallography - 714.2 Semiconductor Devices and Integrated Circuits - 741.3 Optical Devices and Systems - 745.1 Printing - 721.1 Computer Theory, Includes Formal Logic, Automata Theory, Switching Theory, Programming Theory
DOI:10.1088/2040-8978/12/1/015106
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 239>
Accession number:20105213529875
Title:Multi-target detection based on Hough transform and mean shift multi-scale clustering
Authors:Li, Zhe (1); Su, Xiuqin (1)
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Science, Xi'an, China; (2) Graduate College of Chinese Academy of Science, Beijing, China
Corresponding author:Li, Z.
Source title:Proceedings - 2010 3rd International Congress on Image and Signal Processing, CISP 2010
Abbreviated source title:Proc. - Int. Congr. Image Signal Process., CISP
Volume:2
Monograph title:Proceedings - 2010 3rd International Congress on Image and Signal Processing, CISP 2010
Issue date:2010
Publication year:2010
Pages:999-1003
Article number:5646940
Language:English
ISBN-13:9781424465149
Document type:Conference article (CA)
Conference name:2010 3rd International Congress on Image and Signal Processing, CISP 2010
Conference date:October 16, 2010 - October 18, 2010
Conference location:Yantai, China
Conference code:83091
Sponsor:Yantai University
Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States
Abstract:Detection based on Hough Transform is a good way frequently employed to detect straight-line targets, but it bears problems as difficulty in selecting an appropriate threshold coefficient and target misjudgment. To solve those technical problems mentioned above, this paper proposes a novel algorithm based on Hough Transform and Mean Shift Multi-Scale Clustering (MSMSCHT). Firstly, the outline of targets is extracted and a primary selection is conducted by taking a low threshold. Then, the primary targets are treated with Multi-Scale Clustering, and the class centers can be obtained via Mean Shift algorithm. Finally, the target number and attitude parameters can be calculated adaptively by optimization of scales. For multi-target shaped in straight lines in sky background, this algorithm proposed can avoid the difficulty in the choice of an appropriate threshold by taking clustering method, thus can successfully complete detecting mission. Experimental results verify the efficacy of the proposed algorithm. ©2010 IEEE.
Number of references:6
Main heading:Clustering algorithms
Controlled terms:Hough transforms - Mathematical transformations - Signal detection - Signal processing - Target tracking
Uncontrolled terms:Attitude parameter - Clustering methods - Low thresholds - Mean shift - Mean shift algorithm - Multi-scale clustering - Multi-target detection - Multitarget - Novel algorithm - Sky background - Straight lines - Straight-line target - Technical problem
Classification code:716.1 Information Theory and Signal Processing - 716.2 Radar Systems and Equipment - 721 Computer Circuits and Logic Elements - 921.3 Mathematical Transformations
DOI:10.1109/CISP.2010.5646940
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 240>
Accession number:20102112951942
Title:Image ratio features for facial expression recognition application
Authors:Song, Mingli (1); Tao, Dacheng (2); Liu, Zicheng (3); Li, Xuelong (4); Zhou, Mengchu (5)
Author affiliation:(1) Microsoft Visual Perception Laboratory, Zhejiang University, Hangzhou, China; (2) School of Computer Engineering, Nanyang Technological University, Singapore, Singapore; (3) Microsoft Research, Redmond, WA, United States; (4) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, China; (5) Department of Electrical and Computer Engineering, New Jersey Institute of Technology, Newark, NJ, United States
Corresponding author:Tao, D.(dctao@ntu.edu.sg)
Source title:IEEE Transactions on Systems, Man, and Cybernetics, Part B: Cybernetics
Abbreviated source title:IEEE Trans Syst Man Cybern Part B Cybern
Volume:40
Issue:3
Issue date:June 2010
Publication year:2010
Pages:779-788
Article number:5299175
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:Video-based facial expression recognition is a challenging problem in computer vision and humancomputer interaction. To target this problem, texture features have been extracted and widely used, because they can capture image intensity changes raised by skin deformation. However, existing texture features encounter problems with albedo and lighting variations. To solve both problems, we propose a new texture feature called image ratio features. Compared with previously proposed texture features, e.g., high gradient component features, image ratio features are more robust to albedo and lighting variations. In addition, to further improve facial expression recognition accuracy based on image ratio features, we combine image ratio features with facial animation parameters (FAP<inf>s</inf>), which describe the geometric motions of facial feature points. The performance evaluation is based on the Carnegie Mellon University CohnKanade database, our own database, and the Japanese Female Facial Expression database. Experimental results show that the proposed image ratio feature is more robust to albedo and lighting variations, and the combination of image ratio features and FAPs outperforms each feature alone. In addition, we study asymmetric facial expressions based on our own facial expression database and demonstrate the superior performance of our combined expression recognition system. © 2006 IEEE.
Number of references:42
Main heading:Face recognition
Controlled terms:Animation - Computer vision - Database systems - Gesture recognition - Lighting - Problem solving - Solar radiation - Textures
Uncontrolled terms:Capture images - Carnegie Mellon University - Cohn-Kanade database - Expression recognition - Facial animation parameters - Facial expression recognition - Facial Expressions - Facial feature points - Geometric motion - High gradient - Performance evaluation - Ratio features - Skin deformation - Texture features
Classification code:921 Mathematics - 742.1 Photography - 741.2 Vision - 741.1 Light/Optics - 731.6 Robot Applications - 933 Solid State Physics - 723.5 Computer Applications - 723.3 Database Systems - 716 Telecommunication; Radar, Radio and Television - 707 Illuminating Engineering - 657.1 Solar Energy and Phenomena - 723.4 Artificial Intelligence
DOI:10.1109/TSMCB.2009.2029076
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 241>
Accession number:20114514490883
Title:Performance of double sideband modulated probe wave in BOTDA distributed fiber sensor
Authors:Cui, Qingsong (1); Pamukcu, Sibel (2); Lin, Aoxiang (3); Xiao, Wen (1); Toulouse, Jean (3)
Author affiliation:(1) School of Instrument Science and Opto-electronics Engineering, Beihang University, Beijing 100083, China; (2) Department of Civil and Environmental Engineering, Lehigh University, Bethlehem, PA 18015, United States; (3) Center for Optical Technologies and Physics Department, Lehigh University, Bethlehem, PA 18015, United States; (4) 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:Cui, Q.(qingsong.research@gmail.com)
Source title:Microwave and Optical Technology Letters
Abbreviated source title:Microwave Opt Technol Lett
Volume:52
Issue:12
Issue date:December 2010
Publication year:2010
Pages:2713-2717
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:We report on the performance of double sideband (DSB) modulated probe wave in Brillouin optical time domain analysis (BOTDA) distributed fiber sensor. Compared to single sideband (SSB) modulation, along the sensing fiber the pump depletion of DSB modulation is remarkably suppressed in time domain and also has a relatively narrower Brillouin gain spectrum in frequency domain. Both the theoretical simulation and the experimental results demonstrate that the DSB modulation provides potentially longer sensing distance and higher accuracy in measurement than the SSB modulation in the BOTDA distributed fiber sensor system. © 2010 Wiley Periodicals, Inc.
Number of references:12
Main heading:Fibers
Controlled terms:Modulation - Probes - Sensors - Time domain analysis
Uncontrolled terms:Brillouin gain spectrum - Brillouin optical time domain analysis - Distributed fiber sensor - Double-sideband - Fiber optics sensors - Frequency domains - Probe waves - Pump depletion - Sensing fibers - Single sideband modulation - SSB modulation - Stimulated Brillouin - Theoretical simulation - Time domain
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 - 817 Plastics and Other Polymers: Products and Applications - 812 Ceramics, Refractories and Glass - 801 Chemistry - 718 Telephone Systems and Related Technologies; Line Communications - 717 Optical Communication - 716 Telecommunication; Radar, Radio and Television
DOI:10.1002/mop.25566
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 242>
Accession number:20101012751460
Title:Phase-shifting point-diffraction interferometry with common-path and in-line configuration for microscopy
Authors:Gao, Peng (1); Harder, Irina (2); Nercissian, Vanusch (1); Mantel, Klaus (2); Yao, Baoli (3)
Author affiliation:(1) Institute of Optics, Information and Photonics, University of Erlangen, Erlangen, Germany; (2) Max-Planck Institute for the Science of Light, Erlangen, Germany; (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; (4) Graduate School of the Chinese Academy of Sciences, Beijing 100039, China
Corresponding author:Yao, B.(yaobl@opt.ac.cn)
Source title:Optics Letters
Abbreviated source title:Opt. Lett.
Volume:35
Issue:5
Issue date:March 1, 2010
Publication year:2010
Pages:712-714
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 new common-path and in-line point-diffraction interferometer for quantitative phase microscopy is proposed. The interferometer is constructed by introducing a grating pair into the point-diffraction interferometer, thus forming a common-path and in-line configuration for object and reference waves. Achromatic phase shifting is implemented by linearly moving one of the two gratings in its grating vector direction. The feasibility of the proposed configuration is demonstrated by theoretical analysis and experiments. © 2010 Optical Society of America.
Number of references:22
Main heading:Interferometers
Controlled terms:Communication channels (information theory) - Diffraction - Interferometry
Uncontrolled terms:Common-path - Grating pair - Grating vectors - In-line - In-line configuration - Phase-shifting - Point diffraction interferometer - Point diffraction interferometry - Quantitative phase microscopies - Reference waves
Classification code:711.1 Electromagnetic Waves in Different Media - 716.1 Information Theory and Signal Processing - 741.1 Light/Optics - 941.3 Optical Instruments - 941.4 Optical Variables Measurements
DOI:10.1364/OL.35.000712
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 243>
Accession number:20104613383574
Title:Optical system design of space sensor with two long focal length lens
Authors:He, Yinghong (1); Ma, Zhen (1); Zhao, Baochang (1); Chang, Lingying (1); Chen, Liwu (1); Ma, Xiaolong (1); Yi, Hongwei (1)
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, Shaanxi 710119, China
Corresponding author:He, Y.(heyinghong@opt.ac.cn)
Source title:Guangxue Xuebao/Acta Optica Sinica
Abbreviated source title:Guangxue Xuebao
Volume:30
Issue:10
Issue date:October 2010
Publication year:2010
Pages:3027-3033
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 compact space optical system without moving parts which can get two focal lengths is designed. Ritchey-Chre´tien (R-C) mirror is common for long-focus system and short-focus system. A splitter prism is used for splitting the light into two beams relayed by transmitting optical system. The focal length is 4700 mm and F number is 13.4 for the long-focus system, and the focal length is 2350 mm and F number is 6.7 for the short-focus system. Some measure is taken to make sure the less degradation of MTF for thermal distortion, such as a kind of material with small thermal expansion using comrection between the primer mirror and the second mirror and material with good thermal property as mirror substrate for reduce surface distortion. The modulation transfer function (MTF) of optical system in condition of (19±3)°C is analyzed, which shows a good result for user 's requirement.
Number of references:12
Main heading:Optical systems
Controlled terms:Focusing - Mirrors - Optical design - Optical transfer function - Prisms - Remote sensing - Temperature - Thermal expansion
Uncontrolled terms:F number - Focal lengths - Long focal lengths - Mirror substrate - Modulation transfer function - Moving parts - Optical system designs - Remote sensors - Space optical system - Space sensors - Splitter prism - Surface distortion - Temperature effects - Thermal distortions - Thermal properties - Two beams
Classification code:641.1 Thermodynamics - 731.1 Control Systems - 741.1 Light/Optics - 741.3 Optical Devices and Systems
DOI:10.3788/AOS20103010.3027
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 244>
Accession number:20110313605208
Title:Design of servo control mechanism for laser tracking detection system
Authors:Qiao, Yongming (1); Lian, Xuezheng (1); Wang, Yaohui (1)
Author affiliation:(1) Photoelectric Measurement and Control Technology Research Department, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, Shaanxi, 710119, China; (2) Graduate College of Chinese Academy of Science, Beijing 100039, China
Corresponding author:Qiao, Y.
Source title:2010 International Conference on E-Product E-Service and E-Entertainment, ICEEE2010
Abbreviated source title:Int. Conf. E-Prod. E-Serv. E-Entertain., ICEEE
Monograph title:2010 International Conference on E-Product E-Service and E-Entertainment, ICEEE2010
Issue date:2010
Publication year:2010
Article number:5661603
Language:English
ISBN-13:9781424471614
Document type:Conference article (CA)
Conference name:2010 International Conference on E-Product E-Service and E-Entertainment, ICEEE2010
Conference date:November 7, 2010 - November 9, 2010
Conference location:Henan, China
Conference code:83418
Sponsor:IEEE Consumer Electronics Society; Henan Polytechnic University; Huazhong Normal University
Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States
Abstract:A servo control system based on DSP+FPGA structure was proposed in this paper in order to achieve better performances of laser tracking system, meanwhile principles of position detection were introduced in details and the modeling as well as simulation for this system was built. FPGA was implemented in this system to sample the signals from detectors and calculate the values of position and velocity from photoelectric encoder. The control algorithm was accomplished by DSP finally. The experimental results show high tracking accuracy, strong ability of anti-interference and fast response. ©2010 IEEE.
Number of references:8
Main heading:Pneumatic control equipment
Controlled terms:Algorithms - Control theory - Decoding - Detectors - Photoelectricity - Remote control
Uncontrolled terms:Anti-interference - Control algorithms - Detection system - DSP+FPGA - Fast response - Laser tracking - Laser tracking system - Photoelectric decoder - Photoelectric encoders - Position detection - Servo control - Servo control systems - Tracking accuracy
Classification code:921 Mathematics - 914 Safety Engineering - 741.1 Light/Optics - 732.1 Control Equipment - 731.1 Control Systems - 723.2 Data Processing and Image Processing - 723 Computer Software, Data Handling and Applications
DOI:10.1109/ICEEE.2010.5661603
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 245>
Accession number:20102012945060
Title:Pulse evolution without wave breaking in a strongly dissipative-dispersive laser system
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.cn)
Source title:Physical Review A - Atomic, Molecular, and Optical Physics
Abbreviated source title:Phys Rev A
Volume:81
Issue:5
Issue date:May 12, 2010
Publication year:2010
Article number:053819
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:We report on pulse evolution without wave breaking in a strongly dissipative-dispersive laser system where pulses encounter significant amounts of positive and negative dispersions. In contrast to conventional soliton, dispersion-managed soliton, and self-similar pulse evolutions, a different type of pulse shaping in mode-locked lasers is theoretically investigated and experimentally observed. The pulses of this laser have very low frequency chirp and exhibit as the quasirectangle temporal and Gaussian spectral profiles, and the spectral width is almost independent of the pumping strength. The temporal and spectral widths fluctuate as low as ~3% of the relative fluctuation throughout the laser cavity. Both numerical and experimental results show that the pulses exist with energies much greater than can be tolerated in self-similar pulse shaping. © 2010 The American Physical Society.
Number of references:38
Main heading:Pulsed laser applications
Controlled terms:Dispersion (waves) - Lasers - Mode-locked fiber lasers - Oceanography - Pulse shaping circuits - Solitons
Uncontrolled terms:Dispersion managed solitons - Gaussians - Laser cavity - Laser systems - Mode-locked laser - Pulse evolution - Pulse-shaping - Self-similar - Spectral profile - Spectral widths - Very low frequency - Wavebreaking
Classification code:931.3 Atomic and Molecular Physics - 921.1 Algebra - 744.9 Laser Applications - 744.1 Lasers, General - 713.4 Pulse Circuits - 711.1 Electromagnetic Waves in Different Media - 471.1 Oceanography, General
DOI:10.1103/PhysRevA.81.053819
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 246>
Accession number:20101312808402
Title:A compression algorithm of AT-3DSPIHT for LASIS's hyperspectral image
Authors:Ma, Dongmei (1); Ma, Caiwen (1); Luo, Cuihua (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 100039, China
Corresponding author:Ma, D.(dr.mdm@opt.ac.cn)
Source title:Guangxue Xuebao/Acta Optica Sinica
Abbreviated source title:Guangxue Xuebao
Volume:30
Issue:2
Issue date:February 2010
Publication year:2010
Pages:378-381
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 compression algorithm of asymmetric 3D set partitioning in hierarchical trees (AT-3DSPIHT) supporting region of interest (ROI) is proposed for imaging characteristics of large-aperture static imaging spectrometer (LASIS). Firstly, the hyperspectral image sequences are decomposed with asymmetric 3D discrete wavelet transform (3D-DWT). Secondly, different coding precisions are assigned to wavelet coefficients in different regions by the method of ROI to protect the hyperspectral information. Finally, the transformed images are encoded with the adapted 3D set partitioning in hierarchical trees (3DSPIHT) algorithm. The experimental results show that the peak signal-to-noise ratio (PSNR) is more than 40 dB at 8:1 compression rate, and the efficient protection of hyperspectral information is achieved.
Number of references:15
Main heading:Three dimensional
Controlled terms:Digital image storage - Discrete wavelet transforms - Image compression - Image segmentation - Signal to noise ratio - Spectrometers - Spectrometry
Uncontrolled terms:Hyperspectral image compression - Information optics - Large aperture - Region of interest - Set partitioning in hierarchical tree - Static imaging
Classification code:941.4 Optical Variables Measurements - 941.3 Optical Instruments - 921.3 Mathematical Transformations - 902.1 Engineering Graphics - 801 Chemistry - 741.3 Optical Devices and Systems - 741.1 Light/Optics - 741 Light, Optics and Optical Devices - 723.5 Computer Applications - 723.2 Data Processing and Image Processing - 722.4 Digital Computers and Systems - 722.1 Data Storage, Equipment and Techniques - 716.1 Information Theory and Signal Processing
DOI:10.3788/AOS20103002.0378
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 247>
Accession number:20110113550886
Title:A new fluid state laser system realizes laser output
Authors:Gui, Luo (1); Hou, Chaoqi (2); Peng, Bo (2); Fan, Dianyuan (1)
Author affiliation:(1) National Laboratory on High Power Laser and Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Science(CAS), Shanghai, 201800, 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, Shanxi, 710119, China
Corresponding author:Peng, B.
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:7843
Monograph title:High-Power Lasers and Applications V
Issue date:2010
Publication year:2010
Article number:78431I
Language:English
ISSN:0277786X
CODEN:PSISDG
ISBN-13:9780819483737
Document type:Conference article (CA)
Conference name:High-Power Lasers and Applications V
Conference date:October 18, 2010 - October 19, 2010
Conference location:Beijing, China
Conference code:83313
Sponsor:The Society of Photo-Optical Instrumentation Engineers (SPIE); Chinese Optical Society (COS)
Publisher:SPIE, P.O. Box 10, Bellingham, WA 98227-0010, United States
Abstract:This article demonstrates a diode-pumped pulse laser operation in a flowing fluid host containing Nd-glass particles, transversely pumped by 810nm laser diodes. A series of Laser pulse as the output are observed. The repetition frequency is 1Hz, and the pulse width is about 100μ s , and the maximum pulse energy is up to 2.93mJ, and the average pulse energy is 0.84mJ. Given that fluid circulation offers improved heat management, the realization of laser output of this new fluid state laser verifies a practical way to solve the heat-induced problems in high energy laser systems. © 2010 Copyright SPIE - The International Society for Optical Engineering.
Number of references:9
Main heading:Pumping (laser)
Controlled terms:Fluids - Glass lasers - High energy lasers - Light refraction - Refractive index - Refractometers
Uncontrolled terms:Diode-pumped - Flowing fluid - Fluid circulation - Fluid state - Glass particles - Heat management - High-energy laser systems - Laser diodes - Laser materials - Laser output - Laser systems - Laser technique - Pulse energies - Pulse laser - Pulse width - refractive index matching - Repetition frequency
Classification code:631 Fluid Flow - 741.1 Light/Optics - 744.1 Lasers, General - 941.3 Optical Instruments
DOI:10.1117/12.870197
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 248>
Accession number:20104313323538
Title:Research on spectral classification algorithm based on spatial feature
Authors:Gao, Xiao-Hui (1); Xiangli, Bin (2); Wei, Jun-Xia (1); Wei, Ru-Yi (1); Yu, Tao (1)
Author affiliation:(1) 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; (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:30
Issue:10
Issue date:October 2010
Publication year:2010
Pages:2772-2775
Language:Chinese
ISSN:10000593
CODEN:GYGFED
Document type:Journal article (JA)
Publisher:Science Press, 18,Shuangqing Street,Haidian, Beijing, 100085, China
Abstract:With the wide use of imaging spectroscopy, applying data cubes to classification and identification of materials has been developed to be an important research content. The classification algorithms play a vital role in accuracy and precision of object identification. The most common classification algorithms mainly make use of the information gained from spectral dimension and classify the materials based on spectral match. The material reflectance spectra collected by imaging spectroscopy is determined not only by the sorts, but also by the geometry structure and roughness of material surface, and so on. Then classification and identification algorithms only using the reflection spectra have errors to some extent. This paper puts forward an algorithm based on the common classification algorithms that controls the classification process by using the spatial feature of image to promote the correctness of classification. This algorithm was applied to identify the true leaves from the fake ones. The result shows preferable spatial continuity. To a great extent, the algorithm overcomes "ma pixel" domino effect, and is proved valid.
Number of references:10
Main heading:Algorithms
Controlled terms:Image classification
Uncontrolled terms:Accuracy and precision - Classification algorithm - Classification process - Data cube - Domino effects - Geometry structure - Identification algorithms - Imaging spectroscopy - Material surface - Object identification - Reflectance spectrum - Reflection spectra - Spatial continuity - Spatial features - Spectral classification - Spectral detection - Spectral dimensions - Spectral match
Classification code:716 Telecommunication; Radar, Radio and Television - 723 Computer Software, Data Handling and Applications - 921 Mathematics
DOI:10.3964/j.issn.1000-0593(2010)10-2772-04
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 249>
Accession number:20142017724890
Title:Algorithm for extended X-ray image dynamic range based on image fusion
Authors:Li, Wei (1); Hou, Qing (2); Li, Hanzhi (3)
Author affiliation:(1) School of Information Engineering, Chang'an University, Xi'an 710064, China; (2) Modern Education Technology and Network Center, Shaanxi University of Chinese Medicine, Xianyang 712046, China; (3) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Science, Xi'an 710119, China
Source title:3rd International Symposium on Test Automation and Instrumentation, ISTAI 2010
Abbreviated source title:Int. Symp. Test Autom. Instrum., ISTAI
Monograph title:3rd International Symposium on Test Automation and Instrumentation, ISTAI 2010
Issue date:2010
Publication year:2010
Pages:696-699
Language:English
Document type:Conference article (CA)
Conference name:3rd International Symposium on Test Automation and Instrumentation, ISTAI 2010
Conference date:May 22, 2010 - May 25, 2010
Conference location:Xiamen, China
Conference code:105069
Sponsor:China Instrumentation and Control Society (CIS); Journal of Electronic Measurement and Instrument; Chinese Journal of Scientific Instrument; National Natural science Foundation of China; Computer Measurement Group
Publisher:International Symposium on Test Automation and, China
Abstract:An algorithm of X-ray image extended dynamic range based on the image fusion is presented in the paper. First of all, the X-ray original image are processed by wavelet decomposition with defined layers. The generated high frequency wavelet and low frequency wavelet are processed by two different kinds of methods respectively, then the wavelets in every frequency band inverse transformed to image fusion. With a final step of histogram equalization, it comes out an expanded dynamic range, compared with original image.
Number of references:10
Main heading:Image fusion
Controlled terms:Algorithms - Frequency bands - Graphic methods - Wavelet decomposition - X ray analysis
Uncontrolled terms:Expanded dynamic range - Extended dynamic ranges - Histogram equalizations - Original images - Wavelet transformations - X-ray image
Classification code:951 Materials Science - 921.3 Mathematical Transformations - 921 Mathematics - 801 Chemistry - 723 Computer Software, Data Handling and Applications - 716.4 Television Systems and Equipment - 421 Strength of Building Materials; Mechanical Properties
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 250>
Accession number:IP51159530
Title:An X-ray detector for X-ray pulsar based navigation and timing
Authors:Zhao, Baosheng (1); Hu, Huijun (1); Sheng, Lizhi (1); Yan, Qiurong (1); Liu, Yongan (1); Chen, Ding (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, Shanxi, China; (2) Graduate University of Chinese Academy of Sciences, Beijing 100039, China; (3) National Time Service Center, Chinese Academy of Sciences, Xi'an 710600, China
Corresponding author:Zhao, B.(open@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
Publication year:2010
Language:English
ISSN:01689002
CODEN:NIMAER
Document type:Article in Press
Abstract:The pulse time of arrival (TOA) is a determinant parameter in the X-ray pulsar based navigation and timing. The measurement of TOA is implemented by super sensitive X-ray photon counting detector on the spacecraft. By comparing different kinds of detectors, an X-ray detector based MCP sensitive to X-ray energy band of 1-10 keV is proposed. The detector consists of input window, CsI photocathode, micro-channel plate (MCP) stack and a designed anode. The incident X-ray photons are detected and the pulse profile is reconstructed. By comparing the measurement pulse profile with the standard pulse profile of the X-ray pulsar source, the pulse TOA can be calculated. The experiment system, performance of the detector and results on the pulse profile are presented. © 2010 Elsevier B.V. All rights reserved.
Main heading:X rays
Controlled terms:Detectors - Electromagnetic wave emission - Image storage tubes - Navigation - Photons - Time measurement - X ray apparatus
Uncontrolled terms:CsI photocathodes - Experiment system - Micro channel plate - Navigation and timing - Pulse profile - Pulse time - X ray photons - X-ray detector - X-ray energies - X-ray photon counting - X-ray pulsars
Classification code:711 Electromagnetic Waves - 714.1 Electron Tubes - 716.3 Radio Systems and Equipment - 741.1 Light/Optics - 801 Chemistry - 914 Safety Engineering - 932.1 High Energy Physics - 943.3 Special Purpose Instruments
DOI:10.1016/j.nima.2010.10.086
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 251>
Accession number:20102813065825
Title:Characteristics of the aluminum alloy plasma produced by a 1064 nm Nd:YAG laser with different irradiances
Authors:Luo, W.F. (1); Zhao, X.X. (2); Sun, Q.B. (1); Gao, C.X. (1); Tang, J. (1); Wang, H.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:Pramana - Journal of Physics
Abbreviated source title:Pramana J Phys
Volume:74
Issue:6
Issue date:June 2010
Publication year:2010
Pages:945-959
Language:English
ISSN:03044289
CODEN:PRAMCI
Document type:Journal article (JA)
Publisher:Indian Academy of Sciences, C.V. Raman Avenue, P.O. Box 8005, Bangalore, 560 080, India
Abstract:The plasma generated by 1064 nm Nd:YAG laser irradiation of aluminum alloy in air at atmospheric pressure was studied spectroscopically. The electron density inferred by measuring the Stark-broadened line profile of Si(I) 288.16 nm decreases with increasing distance from the target surface. The electron temperature was determined using the Boltzmann plot method with nine strong neutral aluminum lines. Due to the thermal conduction towards the solid target and radiative cooling of the plasma as well as conversion of thermal energy into kinetic energy, the electron temperature decreases both at the plasma edge and close to the target surface. Electron density and electron temperature were also studied as functions of laser power density. At the same time, the validity of the assumption of local thermodynamic equilibrium and the effect of selfabsorption were discussed in light of the results obtained. © Indian Academy of Sciences.
Number of references:37
Main heading:Neodymium lasers
Controlled terms:Aluminum - Aluminum alloys - Atmospheric pressure - Atomic emission spectroscopy - Atomic spectroscopy - Carrier concentration - Electron density measurement - Electron temperature - Laser damage - Neodymium - Plasma turbulence - Targets
Uncontrolled terms:1064 nm - Aluminum lines - Boltzmann plot - Electron densities - Laser power density - Line profiles - Local thermodynamic equilibrium - ND : YAG lasers - Nd: YAG laser irradiation - Plasma edges - Radiative cooling - Solid targets - Target surface - Thermal conduction
Classification code:944.6 Temperature Measurements - 744.4 Solid State Lasers - 744.8 Laser Beam Interactions - 801 Chemistry - 931.3 Atomic and Molecular Physics - 932 High Energy Physics; Nuclear Physics; Plasma Physics - 932.1 High Energy Physics - 932.1.1 Particle Accelerators - 932.3 Plasma Physics - 741.1 Light/Optics - 443.1 Atmospheric Properties - 461.2 Biological Materials and Tissue Engineering - 541.1 Aluminum - 712.1 Semiconducting Materials - 541.2 Aluminum Alloys - 631.1.2 Gas Dynamics - 701.1 Electricity: Basic Concepts and Phenomena - 547.2 Rare Earth Metals
DOI:10.1007/s12043-010-0086-8
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 252>
Accession number:20104713405536
Title:Generation of 10 GHz, 1.9 ps optical pulse train using semiconductor optical amplifier and silica-based highly nonlinear fiber
Authors:Yan, S.Y. (1); Xie, X.P. (1); Hui, Z.Q. (1); Feng, H. (1); Zhao, W. (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) Xi'an Telecommunication College, Xi'an 710106, China
Corresponding author:Yan, S. Y.(nechoyan@gmail.com)
Source title:Journal of Optics
Abbreviated source title:J. Opt.
Volume:12
Issue:8
Issue date:August 2010
Publication year:2010
Article number:085401
Language:English
ISSN:20408978
E-ISSN:20408986
Document type:Journal article (JA)
Publisher:Institute of Physics Publishing, Temple Back, Bristol, BS1 6BE, United Kingdom
Abstract:We propose a simple approach to generate a high quality 10 GHz 1.9 ps optical pulse train using a semiconductor optical amplifier and silica-based highly nonlinear fiber. An optical pulse generator based on our proposed scheme is easy to set up with commercially available optical components. A 10 GHz, 1.9 ps optical pulse train is obtained with timing jitter as low as 60 fs over the frequency range 10 Hz-1 MHz. With a wavelength tunable CW laser, a wide wavelength tunable span can be achieved over the entire C band. The proposed optical pulse generator also can operate at different repetition rates from 3 to 10 GHz. © 2010 IOP Publishing Ltd.
Number of references:8
Main heading:Pulse generators
Controlled terms:Fibers - Light pulse generators - Modulation - Optical switches - Pulse repetition rate - Self phase modulation - Semiconductor optical amplifiers - Signal generators - Silica - Timing jitter - Ultrashort pulses
Uncontrolled terms:C-bands - Cross gain modulation - CW-laser - Frequency ranges - High quality - Highly nonlinear fibers - Optical components - Optical pulse train - Repetition rate - Simple approach - Wavelength tunable
Classification code:812 Ceramics, Refractories and Glass - 744.1 Lasers, General - 741.3 Optical Devices and Systems - 741.1.1 Nonlinear Optics - 817 Plastics and Other Polymers: Products and Applications - 718 Telephone Systems and Related Technologies; Line Communications - 716 Telecommunication; Radar, Radio and Television - 715 Electronic Equipment, General Purpose and Industrial - 713.4 Pulse Circuits - 717 Optical Communication
DOI:10.1088/2040-8978/12/8/085401
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 253>
Accession number:20104713410212
Title:A high power light emitting diode module for projection display application
Authors:Peng, Chenhui (1); Li, Xiaoning (1); Wang, Jingwei (1); Xiong, Lingling (1); Zhang, Yanxin (1); Liu, Xingsheng (1)
Author affiliation:(1) 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, Shaanxi 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, No.28, Xianning West Road, Xi'an, Shaanxi 710049, China; (3) Xi'An Focuslight Technologies Co, Ltd. No. 17 Xinxi Road, Xi'an, Shaanxi 710119, China
Corresponding author:Peng, C.(pengchenhui@opt.ac.cn)
Source title:Proceedings - 2010 11th International Conference on Electronic Packaging Technology and High Density Packaging, ICEPT-HDP 2010
Abbreviated source title:Proc. - Int. Conf. Electron. Packag. Technol. High Density Packag., ICEPT-HDP
Monograph title:Proceedings - 2010 11th International Conference on Electronic Packaging Technology and High Density Packaging, ICEPT-HDP 2010
Issue date:2010
Publication year:2010
Pages:1412-1416
Article number:5582830
Language:English
ISBN-13:9781424481422
Document type:Conference article (CA)
Conference name:2010 11th International Conference on Electronic Packaging Technology and High Density Packaging, ICEPT-HDP 2010
Conference date:August 16, 2010 - August 19, 2010
Conference location:Xi'an, China
Conference code:82121
Sponsor:Electron. Manuf. Packag. Technol. Soc. Chin. Inst. Electron.; IEEE Compon., Packag., Manuf. Technol. Soc. (IEEE-CPMT); Xidian University
Publisher:Association for Computing Machinery, 1515 Broadway, 17th Floor, New York, NY 10036-5701, United States
Abstract:Light emitting diode (LED) has numerous advantages such as long lifetime, large color gamut, small size and the absence of mercury vapor. In recent years, there has been recognition that 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 packaging structure for projection display application. The performance of rectangular CPC was studied and compared to theoretical simulations. Rectangular CPC was fabricated as the collector and collimator. A high power green LED module combined with rectangular CPC was fabricated and its performance was characterized. More than 90% light emitted by multiple-LED array can be collected by the CPC and transmit within the designed angle. A high power of 2.09W and a high luminous flux of 800 lm were obtained. © 2010 IEEE.
Number of references:22
Main heading:Light emitting diodes
Controlled terms:Electronics packaging - Light emission - Mercury (metal) - Optical projectors - Packaging - Physical optics
Uncontrolled terms:Color gamuts - Dielectric compounds - Green LEDs - High power light emitting diodes - High-power - LED arrays - Long lifetime - Luminous flux - Mercury vapor - Packaging structure - Projection displays - Small size - Theoretical simulation
Classification code:741.3 Optical Devices and Systems - 741.1 Light/Optics - 716 Telecommunication; Radar, Radio and Television - 715 Electronic Equipment, General Purpose and Industrial - 714 Electronic Components and Tubes - 694.1 Packaging, General - 549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals
DOI:10.1109/ICEPT.2010.5582830
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 254>
Accession number:20101812906381
Title:Prediction of optical modulation properties of twisted-nematic liquid-crystal display by improved measurement of Jones matrix
Authors:Ma, Baiheng (1); Yao, Baoli (1); Ye, Tong (1); Lei, Ming (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) Graduate School of the Chinese Academy of Sciences, Beijing 100039, China; (3) College of Life Science, Shaanxi Key Laboratory of Molecular Biology for Agriculture, Northwest AandF University, Yangling 712100, China
Corresponding author:Ma, B.
Source title:Journal of Applied Physics
Abbreviated source title:J Appl Phys
Volume:107
Issue:7
Issue date:April 1, 2010
Publication year:2010
Article number:073107
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:The optical modulation properties of twisted-nematic liquid-crystal display (TN-LCD) can be totally predicted and optimized when its Jones matrix is known. An improved method for determining the Jones matrix of the TN-LCD without knowing its internal parameters is presented in this paper. Only three sets of intensity measurements are needed for the complete determination of the TN-LCD's Jones matrix for a single wavelength, much less than the procedure offered by Moreno This method is easier and stable in data processing and capable of diminishing the calculation error resulting from the fluctuation of intensity measurement effectively. The validity of this method is verified experimentally, whose results coincide well with the optical modulation properties of the TN-LCD predicted by our determined Jones matrix. © 2010 American Institute of Physics.
Number of references:16
Main heading:Optical properties
Controlled terms:Data processing - Light modulation - Liquid crystal displays - Liquids
Uncontrolled terms:Calculation error - Improved methods - Intensity measurements - Internal parameters - Jones matrix - Optical modulation - Single wavelength - Twisted-nematic liquid-crystal displays
Classification code:722.2 Computer Peripheral Equipment - 723.2 Data Processing and Image Processing - 741.1 Light/Optics - 741.3 Optical Devices and Systems - 931.2 Physical Properties of Gases, Liquids and Solids
DOI:10.1063/1.3361238
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 255>
Accession number:20102012931170
Title:Theoretical and experimental study of polarization characteristics of polarization maintaining fiber based on wavelength-sweeping modulation
Authors:Duan, Zuo-Liang (1); Ren, Li-Yong (1); Zhang, Ya-Ni (1); Wang, Han-Yi (1); Yao, Bao-Li (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, Shaanxi 710119, China
Corresponding author:Ren, L.-Y.(renliy@opt.ac.cn)
Source title:Microwave and Optical Technology Letters
Abbreviated source title:Microwave Opt Technol Lett
Volume:52
Issue:7
Issue date:July 2010
Publication year:2010
Pages:1466-1469
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:We analyze theoretically the polarization characteristics of polarization maintaining fiber and study the basic measurement principles of beat length and polarization extinction ratio of this kind of optical fiber. According to the dependence of the phase difference between two orthogonally polarized modes (denoted as HE<sup>x</sup><inf>11</inf> and HE<sup>y</sup><inf>11</inf>) transmitted in the polarization maintaining fiber on the light wavelength, we propose the wavelength-sweeping modulation method to measure the beat length and the model birefringence. Based on this technique, the beat length and polarization extinction ratio of the PANDA polarization maintaining fibers (PMFs) (provided by Yangtze Optical Fiber and Cable Company, Wuhan, China) were investigated in detail. Experimental results show good consistent with the theoretical ones. We find that this method shows high measurement precision with the advantages of clear measurement principle and easy to operate. © 2010 Wiley Periodicals, Inc.
Number of references:14
Main heading:Polarization
Controlled terms:Birefringence - Fibers - Light extinction - Optical fibers - Optical materials - Scanning
Uncontrolled terms:Beat length - Cable companies - Experimental studies - Light wavelengths - Measurement precision - Measurement principle - Modulation methods - Orthogonally polarized modes - Phase difference - Polarization characteristics - Polarization extinction ratio - Polarization maintaining fibers - Wuhan , China
Classification code:817 Plastics and Other Polymers: Products and Applications - 812 Ceramics, Refractories and Glass - 741.3 Optical Devices and Systems - 819.4 Fiber Products - 741.1.2 Fiber Optics - 711.1 Electromagnetic Waves in Different Media - 701.1 Electricity: Basic Concepts and Phenomena - 741.1 Light/Optics
DOI:10.1002/mop.25244
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 256>
Accession number:20102212974928
Title:A video quality assessment metric based on human visual system
Authors:Lu, Wen (1); Li, Xuelong (2); Gao, Xinbo (1); Tang, Wenjian (1); Li, Jing (1); Tao, Dacheng (3)
Author affiliation:(1) School of Electronic Engineering, Xidian University, Xi'an 710071 Shaanxi, 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) School of Computer Engineering, Nanyang Technological University, Singapore, Singapore
Corresponding author:Li, X.(xuelong_li@opt.ac.cn)
Source title:Cognitive Computation
Abbreviated source title:Cognitive Comput.
Volume:2
Issue:2
Issue date:June 2010
Publication year:2010
Pages:120-131
Language:English
ISSN:18669956
E-ISSN:18669964
Document type:Journal article (JA)
Publisher:Springer New York, 233 Springer Street, New York, NY 10013-1578, United States
Abstract:It is important for practical application to design an effective and efficient metric for video quality. The most reliable way is by subjective evaluation. Thus, to design an objective metric by simulating human visual system (HVS) is quite reasonable and available. In this paper, the video quality assessment metric based on visual perception is proposed. Three-dimensional wavelet is utilized to decompose video and then extract features to mimic the multichannel structure of HVS. Spatio-temporal contrast sensitivity function (S-T CSF) is employed to weight coefficient obtained by three-dimensional wavelet to simulate nonlinearity feature of the human eyes. Perceptual threshold is exploited to obtain visual sensitive coefficients after S-T CSF filtered. Visual sensitive coefficients are normalized representation and then visual sensitive errors are calculated between reference and distorted video. Finally, temporal perceptual mechanism is applied to count values of video quality for reducing computational cost. Experimental results prove the proposed method outperforms the most existing methods and is comparable to LHS and PVQM. © Springer Science+Business Media, LLC 2010.
Number of references:39
Main heading:Three dimensional
Controlled terms:Cost reduction - Feature extraction - Image processing - Video signal processing
Uncontrolled terms:Computational costs - Contrast sensitivity - Existing method - Human eye - Human Visual System - Human visual systems - Multi-channel structure - Non-Linearity - Perceptual mechanism - Perceptual threshold - Spatio-temporal - Subjective evaluations - Video quality - Video quality assessment - Visual perception - Weight coefficients
Classification code:911.2 Industrial Economics - 902.1 Engineering Graphics - 751.1 Acoustic Waves - 741.1 Light/Optics - 912.2 Management - 741 Light, Optics and Optical Devices - 723.2 Data Processing and Image Processing - 716.4 Television Systems and Equipment - 716 Telecommunication; Radar, Radio and Television - 723.5 Computer Applications
DOI:10.1007/s12559-010-9040-9
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 257>
Accession number:20104913467526
Title:A new quality metric for compressed images based on DDCT
Authors:Lu, Wen (1); Li, Jing (1); Tao, Dacheng (2); Gao, Xinbo (1); Li, Xuelong (3)
Author affiliation:(1) School of Electronic Engineering, Xidian University, Xi'an 710071, China; (2) School of Computer Engineering, Nanyang Technological University, 50 Nanyang Avenue, Blk N4, 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, Shaanxi, China
Corresponding author:Lu, W.
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:7744
Monograph title:Visual Communications and Image Processing 2010
Issue date:2010
Publication year:2010
Article number:77440C
Language:English
ISSN:0277786X
CODEN:PSISDG
ISBN-13:9780819482341
Document type:Conference article (CA)
Conference name:Visual Communications and Image Processing 2010
Conference date:July 11, 2010 - July 14, 2010
Conference location:Huangshan, China
Conference code:81851
Sponsor:National Natural Science Foundation of China (NSFC); Chinese Academy of Sciences; Huawei Technologies Company, Ltd.; Microsoft Research Asia
Publisher:SPIE, P.O. Box 10, Bellingham, WA 98227-0010, United States
Abstract:As the performance-indicator of the image processing algorithms or systems, image quality assessment (IQA) has attracted the attention of many researchers. Aiming to the widely used compression standards, JPEG and JPEG2000, we propose a new no reference (NR) metric for compressed images to do IQA. This metric exploits the causes of distortion by JPEG and JPEG2000, employs the directional discrete cosine transform (DDCT) to obtain the detail and direction information of the images and incorporates with the visual perception to obtain the image quality index. Experimental results show that the proposed metric not only has outstanding performance on JPEG and JPEG2000 images, but also applicable to other types of artifacts. © 2010 SPIE.
Number of references:27
Main heading:Image quality
Controlled terms:Communication - Cosine transforms - Discrete cosine transforms - Image communication systems - Imaging systems - Motion compensation - Rating - Visual communication
Uncontrolled terms:Compressed images - Compression standards - Directional discrete cosine transform - Human Visual System - Image processing algorithm - Image quality assessment - Image quality index - JPEG 2000 - No references - Quality metrices - Visual perception
Classification code:716 Telecommunication; Radar, Radio and Television - 716.4 Television Systems and Equipment - 741 Light, Optics and Optical Devices - 902.2 Codes and Standards - 921.3 Mathematical Transformations
DOI:10.1117/12.862432
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 258>
Accession number:20110113551089
Title:Design of a four-mirror optical system with wide field of view
Authors:Liang, Shi-Tong (1); Yang, Jian-Feng (1); Xue, Bin (1); Ruan, Ping (1)
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, Shannxi 710119, China; (2) Graduate School of the Chinese Academy of Sciences, Beijing 100039, China
Corresponding author:Liang, S.-T.
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:7849
Monograph title:Optical Design and Testing IV
Issue date:2010
Publication year:2010
Article number:784930
Language:English
ISSN:0277786X
CODEN:PSISDG
ISBN-13:9780819483799
Document type:Conference article (CA)
Conference name:Optical Design and Testing IV
Conference date:October 18, 2010 - October 20, 2010
Conference location:Beijing, China
Conference code:83316
Sponsor:The Society of Photo-Optical Instrumentation Engineers (SPIE); Chinese Optical Society (COS)
Publisher:SPIE, P.O. Box 10, Bellingham, WA 98227-0010, United States
Abstract:Reflective optics is used widely in space optical systems for their achromatization, large aperture and lightweight compared with refractive systems. Four-mirror system especially off-axis system is desired for its excellent imaging performance and compact structure. Aberration theory of coaxial four-mirror system based on PW method is analyzed and the design procedure is proposed to get the initial four-mirror system in this paper. A large field off-axis four-mirror system is designed based on the theory and the design process. The system contains four conic aspheric mirrors. It has a 2°×0.32° rectangular field of view. The MTF of the system is diffraction-limited and the distortion is less than 0.1%. The structure of the system is compact and the ratio of total axis length to focal length is about 1/3.9. The excellent imaging performance and compact structure make it adaptable to space remote sensing systems. © 2010 Copyright SPIE - The International Society for Optical Engineering.
Number of references:6
Main heading:Mirrors
Controlled terms:Cameras - Optical design - Optical systems - Remote sensing - Space optics
Uncontrolled terms:Aberration theory - Achromatization - Aspheric mirrors - Compact structures - Design procedure - Design process - Diffraction limited - Field of views - Focal lengths - Four-mirror system - Imaging performance - Large aperture - Mirror systems - Off-axis - PW method - Reflective optics - Refractive systems - Space cameras - Space optical system - Space remote sensing - Wide field of view
Classification code:731.1 Control Systems - 741.1 Light/Optics - 741.3 Optical Devices and Systems - 742.2 Photographic Equipment
DOI:10.1117/12.871717
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 259>
Accession number:20102012942113
Title:Energy-efficient contour mapping aggregation in wireless sensor networks
Authors:An, Yuan (1); Liu, Yan (4); Ma, Caiwen (2); Zhou, Xinyun (3); Sun, Limin (3)
Author affiliation:(1) State Key Laboratory of Information Security, Institute of Software, Chinese Academy of Sciences, Beijing, China; (2) Optical Directional and Pointing Technique Research Center, Xi'an Institute of Optics Precision Mechanics, Chinese Academy of Sciences, Xi'an, China; (3) Graduate University, Chinese Academy of Sciences, Beijing, China; (4) School of Software and Microelectronics, Peking University, Beijing, 102600, China
Corresponding author:An, Y.
Source title:2010 IEEE Sensors Applications Symposium, SAS 2010 - Proceedings
Abbreviated source title:IEEE Sens. Appl. Symp., SAS - Proc.
Monograph title:2010 IEEE Sensors Applications Symposium, SAS 2010 - Proceedings
Issue date:2010
Publication year:2010
Pages:79-83
Article number:5439392
Language:English
ISBN-13:9781424449897
Document type:Conference article (CA)
Conference name:2010 IEEE Sensors Applications Symposium, SAS 2010
Conference date:February 23, 2010 - February 25, 2010
Conference location:Limerick, Ireland
Conference code:80312
Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States
Abstract:Contour mapping is an energy-efficient method for geographic correlated value monitoring in Wireless Sensor Networks(WSNs), it suppresses reporting nodes by selecting nodes that are on a contour line. A sensor network is often densely deployed in applications such as temperature or humidity monitoring. In these applications, contour mapping plays a crucial role in data aggregation and data transmission reduction when nodes are densely deployed. In this paper, we propose a novel scheme called DABC (data aggregation based on Bezier curves) to implementing contour mapping in WSNs. In DABC algorithm, sensor nodes that play as sources to report to the sink are intelligently selected through method based on Bezier curve. Simulation on a temperature monitoring scenario shows that DABC saves an amount of energy while achieves almost same fidelity of contour mapping, comparing with traditional methods. © 2009 IEEE.
Number of references:15
Main heading:Wireless sensor networks
Controlled terms:Mapping - Sensor networks - Sensor nodes - Telecommunication equipment
Uncontrolled terms:Bezier curve - Contour line - Contour mapping - Data aggregation - Data transmission - Energy efficient - Humidity monitoring - Temperature monitoring
Classification code:902.1 Engineering Graphics - 732 Control Devices - 731.1 Control Systems - 722.4 Digital Computers and Systems - 722.3 Data Communication, Equipment and Techniques - 722 Computer Systems and Equipment - 718 Telephone Systems and Related Technologies; Line Communications - 717 Optical Communication - 716.3 Radio Systems and Equipment - 716 Telecommunication; Radar, Radio and Television - 405.3 Surveying
DOI:10.1109/SAS.2010.5439392
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 260>
Accession number:20105213529852
Title:An improved hyperspectral classification algorithm based on pixel spatial association
Authors:Gao, Xiaohui (1); Wei, Ruyi (1); Wei, Junxia (1); Zhou, Jinsong (3); Yu, Tao (1)
Author affiliation:(1) Key Laboratory of Spectral Imaging Technology of CAS, Xi'an Institute of Optics and Precision Mechanics of CAS, Xi'an, 710119, China; (2) Graduate University of Chinese Academy Sciences, Beijing, 100039, China; (3) Academy of Opto-Electronics, Chinese Academy Sciences, Beijing, 100190, China
Corresponding author:Gao, X.
Source title:Proceedings - 2010 3rd International Congress on Image and Signal Processing, CISP 2010
Abbreviated source title:Proc. - Int. Congr. Image Signal Process., CISP
Volume:2
Monograph title:Proceedings - 2010 3rd International Congress on Image and Signal Processing, CISP 2010
Issue date:2010
Publication year:2010
Pages:888-890
Article number:5646886
Language:English
ISBN-13:9781424465149
Document type:Conference article (CA)
Conference name:2010 3rd International Congress on Image and Signal Processing, CISP 2010
Conference date:October 16, 2010 - October 18, 2010
Conference location:Yantai, China
Conference code:83091
Sponsor:Yantai University
Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States
Abstract:Classification algorithm is an important technique that has been studied for many years in hyperspectral image processing along with the development of hyperspectral remote sensing. Traditional classification algorithms mostly focus on the differences of spectral dimension but neglecting spatial structures of geography objects. By improving the ECHO algorithm, we put forward a classification algorithm based on pixel's spatial association. This algorithm could possibly be used as an important step in hyperspectral data classification and identification. It may also be a good approach to get rid of redundancy information in endmember extracting, which means that pure spectrum can be extracted from less pixels in the hyperspectral image. In this way, endmember extracting and spectral unmixing will take less time and become more efficient. ©2010 IEEE.
Number of references:7
Main heading:Algorithms
Controlled terms:Image processing - Pixels - Remote sensing - Signal processing
Uncontrolled terms:Classification algorithm - Classification and identification - Endmembers - Hyper-spectral classification - Hyper-spectral images - HyperSpectral - Hyperspectral data classification - Hyperspectral image processing - Hyperspectral remote sensing - Redundancy information - Spatial Association - Spatial structure - Spectral dimensions - Spectral unmixing
Classification code:716.1 Information Theory and Signal Processing - 723 Computer Software, Data Handling and Applications - 723.5 Computer Applications - 731.1 Control Systems - 741 Light, Optics and Optical Devices - 921 Mathematics
DOI:10.1109/CISP.2010.5646886
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 261>
Accession number:20103113111265
Title:Experimental study on an even-number sequence of solitons written in LiNbO<inf>3</inf>: Fe crystal
Authors:Zhang, Yu-Hong (1); Lu, Ke-Qing (1); Zhang, Mei-Zhi (3); Sun, Ting (4)
Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academic of Sciences, Xi'an 710119, China; (2) Xi'an Technological University, Xi'an 710032, China; (3) Xi'an University of Post and Telecommunications, Xi'an 710061, China; (4) Xi'an Institute of Applied Optics, Xi'an 710065, China
Corresponding author:Zhang, Y.-H.(zhangyh1979@tom.com)
Source title:Guangdianzi Jiguang/Journal of Optoelectronics Laser
Abbreviated source title:Guangdianzi Jiguang
Volume:21
Issue:7
Issue date:July 2010
Publication year:2010
Pages:1093-1096
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 dark stripe is generated when the partially spatially incoherent beam passes through amplitude mark. Based on bulk photovoltaic effect in LiNbO<inf>3</inf>: Fe crystal, one-dimensional even-number sequence of solitons with partially spatially incoherent beam is written in crystal without background illumination. When the width of the dark stripe is 13.4 μm, the stripe only splits into Y-junction solitons. However, the dark stripe splits into quadratic-solition when the width of the dark stripe is 20.1 μm. The experimental results reveal that an even-number sequence of dark photovoltaic soliton with partially spatially incoherent beam can be written in LiNbO<inf>3</inf>: Fe crystal without background illumination.
Number of references:16
Main heading:Solitons
Controlled terms:Photoreactivity
Uncontrolled terms:Background illumination - Dark stripe - Experimental studies - Fe crystals - Partially spatially incoherent - Photo-refractive - Photovoltaic soliton - Spatial solitons - Y-junctions
Classification code:741.1 Light/Optics - 921.1 Algebra - 931.3 Atomic and Molecular Physics
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 262>
Accession number:20101312812063
Title:Nd<sup>3+</sup>-doped LaF<inf>3</inf> nanoparticles with a larger emission cross-section
Authors:Cui, Xiaoxia (1); She, Jiangbo (1); Cui, Kai (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, 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:Chemical Physics Letters
Abbreviated source title:Chem. Phys. Lett.
Volume:489
Issue:4-6
Issue date:April 9, 2010
Publication year:2010
Pages:191-194
Language:English
ISSN:00092614
CODEN:CHPLBC
Document type:Journal article (JA)
Publisher:Elsevier, P.O. Box 211, Amsterdam, 1000 AE, Netherlands
Abstract:A series of Nd<sup>3+</sup>-doped LaF<inf>3</inf> nanoparticles with Nd<sup>3+</sup> concentrations from 0.5 to 10 mol% were synthesized. The fluorescence intensity and lifetime of the nanoparticles at various Nd<sup>3+</sup> doping concentration were investigated. The nanoparticles displayed strongest fluorescence intensity at 3 mol% Nd<sup>3+</sup> concentration. Eighty-eight percentage quantum efficiency was obtained when the Nd<sup>3+</sup> concentration was 0.5 mol%. Optical properties of nanoparticles were studied according to Judd-Ofelt theory. A larger emission cross-section, σ<inf>em</inf>, for <sup>4</sup>F<inf>3/2</inf> &rarr<sup> 4</sup>I<inf>11/2</inf> transition of the Nd<sup>3+</sup> ion was obtained as 3.21 × 10<sup>-20</sup> cm<sup>2</sup>, which was two times of the currently reported value. The larger emission cross-section and strong fluorescence intensity demonstrate that these nanoparticles are promising materials for laser applications. © 2010.
Number of references:20
Main heading:Neodymium
Controlled terms:Concentration (process) - Doping (additives) - Fluorescence - Laser applications - Nanoparticles - Optical properties
Uncontrolled terms:Doping concentration - Emission cross-section - Fluorescence intensities - Judd Ofelt theory - Promising materials
Classification code:933 Solid State Physics - 802.3 Chemical Operations - 801 Chemistry - 761 Nanotechnology - 744.9 Laser Applications - 741.1 Light/Optics - 714.2 Semiconductor Devices and Integrated Circuits - 712.2 Thermionic Materials - 712.1 Semiconducting Materials - 708 Electric and Magnetic Materials - 547.2 Rare Earth Metals
DOI:10.1016/j.cplett.2010.02.066
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 263>
Accession number:20101312803103
Title:Intense green upconversion emission in Tb<sup>3+</sup>/Yb<sup>3+</sup> codoped alumino-germano-silicate optical fibers
Authors:Lin, Aoxiang (1); Liu, Xueming (1); Watekar, Pramod R. (2); Guo, Haitao (1); Peng, Bo (1); Wei, Wei (1); Lu, Min (1); Han, Won-Taek (2); Toulouse, Jean (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 Information and Communications, School of Photon Science and Technology, Gwangju Institute of Science and Technology, Gwangju 500712, Korea, Republic of; (3) Center for Optical Technologies, Physics Department, Lehigh University, Bethlehem, PA 18015, United States
Corresponding author:Lin, A.(aoxiang.research@gmail.com)
Source title:Applied Optics
Abbreviated source title:Appl. Opt.
Volume:49
Issue:9
Issue date:March 20, 2010
Publication year:2010
Pages:1671-1675
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 observed intense green upconversion emission from Tb<sup>3+</sup> centered at 546nm due to transition <sup>5</sup>D<inf>4</inf> → <sup>7</sup>F<inf>5</inf> in Tb<sup>3+</sup>/Yb<sup>3+</sup> codoped alumino-germano-silicate optical fibers by direct excitation of Yb<sup>3+</sup> ions with a laser diode at 976 nm. A two-photon cooperative energy transfer upconversion among a pair of Yb<sup>3+</sup> donor ions and a Tb<sup>3+</sup> acceptor ion are responsible for the observed green emission. Appropriately increasing the concentration of Tb<sup>3+</sup> relative to Yb<sup>3+</sup> was found to facilitate the energy transfer upconversion process from Yb <sup>3+</sup> to Tb<sup>3+</sup>, while an excess of Tb<sup>3+</sup> ions inversely introduced more of the concentration quenching effect and phonon-assistant backward energy transfer from Tb<sup>3+</sup> to Yb <sup>3+</sup> and, therefore, damaged the observed green emission. The intensity of the observed green emission was found optimum for a concentration ratio of Tb<sup>3+</sup> to Yb<sup>3+</sup> of 2 : 1 in alumino-germano-silicate optical glass fibers. © 2010 Optical Society of America.
Number of references:36
Main heading:Terbium alloys
Controlled terms:Energy transfer - Glass fibers - Ions - Multiphoton processes - Optical fibers - Optical glass - Silicates - Ytterbium
Uncontrolled terms:Co-doped - Concentration of - Concentration quenching effect - Concentration ratio - Direct excitation - Energy transfer upconversion - Green emissions - Laser diodes - Two photon - Up-conversion emission
Classification code:741.1.2 Fiber Optics - 741.3 Optical Devices and Systems - 744.1 Lasers, General - 931.3 Atomic and Molecular Physics - 801 Chemistry - 812.3 Glass - 819.2 Synthetic Fibers - 812 Ceramics, Refractories and Glass - 741.1 Light/Optics - 701.1 Electricity: Basic Concepts and Phenomena - 413 Insulating Materials - 414 Masonry Materials - 482.2 Minerals - 525.4 Energy Losses (industrial and residential) - 547.2 Rare Earth Metals - 641.2 Heat Transfer
DOI:10.1364/AO.49.001671
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 264>
Accession number:20114714538276
Title:Tunable and switchable multiwavelength fiber lasers with broadband range based on nonlinear polarization rotation technique
Authors:Li, Xiaohui (1); Liu, Xueming (1); Mao, Dong (1); Hu, Xiaohong (1); Lu, Hua (1)
Author affiliation:(1) 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:Li, X.(liuxm@opt.ac.cn)
Source title:Optical Engineering
Abbreviated source title:Opt Eng
Volume:49
Issue:9
Issue date:September 2010
Publication year:2010
Article number:094303
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:Switchable multiwavelength fiber laser outputs with a wide tuning range are experimentally observed in an ultralong cavity. Because of the long spooled single-mode fiber and filter effect of the cavity, multiwavelength lasers with the spacing of ∼14.5 nm are obtained. The proposed fiber laser has the capacity of simultaneously emitting the three wavelengths. By means of adjusting the polarization controllers, the arbitrary single- and dual-wavelength operations are achieved in our laser. © 2010 SPIE.
Number of references:16
Main heading:Fiber amplifiers
Controlled terms:Fiber lasers - Fibers - Oscillators (electronic) - Polarization - Ring lasers - Single mode fibers
Uncontrolled terms:Dual-wavelength - Fiber optics amplifiers - Multi wavelength fiber laser - Multiwavelength laser - Nonlinear polarization rotation - Polarization controllers - Range-based - Switchable - Three-wavelengths - Wide tuning range
Classification code:713.2 Oscillators - 741.1 Light/Optics - 741.1.2 Fiber Optics - 744 Lasers - 812 Ceramics, Refractories and Glass - 817 Plastics and Other Polymers: Products and Applications
DOI:10.1117/1.3485754
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 265>
Accession number:IP51144812
Title:A near ultraviolet photon counting imaging detector
Authors:Wei, Yonglin (1); Zhao, Baosheng (1); Sai, Xiaofeng (1); Liu, Yong'an (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 Xi'an, China
Corresponding author:Wei, Y.(weiyl2002@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
Publication year:2010
Language:English
ISSN:01689002
CODEN:NIMAER
Document type:Article in Press
Abstract:Photon counting imaging detector is classified to direct collection mode and induction mode, based on the readout mode of microchannel plate (MCP) output charge. Previously, we discussed the detector with direct collection mode. A near ultraviolet (NUV) photon counting imaging detector with induction readout mode is presented here. The detector consists of a cesium telluride (Cs<inf>2</inf>Te) photocathode, a v-stack MCP, a semiconductor germanium layer on ceramic substrate, and wedge and strip anode (WSA). Quantum efficiency of the detector photocathode is 12% at (230 nm), dark count rate is 10.7 counts/(s cm<sup>2</sup>) and spatial resolution is 110 μm. © 2010 Elsevier B.V. All rights reserved.
Main heading:Detectors
Controlled terms:Cesium - Germanium - Image storage tubes - Photocathodes - Photoelectricity - Photons - Semiconducting tellurium
Uncontrolled terms:Ceramic substrates - Cesium telluride - Dark count rate - Imaging detector - Micro channel plate - Near ultraviolet - Photon counting - Spatial resolution
Classification code:549.1 Alkali Metals - 712.1.1 Single Element Semiconducting Materials - 714.1 Electron Tubes - 741.1 Light/Optics - 804 Chemical Products Generally - 914 Safety Engineering
DOI:10.1016/j.nima.2010.10.085
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 266>
Accession number:20110213573307
Title:An improved centroid detection method based on higher moment for Shack-Hartmann wavefront sensor
Authors:Xia, Ai-Li (1); Ma, Cai-Wen (1)
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, CAS, Xian 710119, China; (2) Graduate University, CAS, Beijing 100039, China
Corresponding author:Xia, A.-L.(xia_aili@163.com)
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:7850
Monograph title:Optoelectronic Imaging and Multimedia Technology
Issue date:2010
Publication year:2010
Article number:78501Q
Language:English
ISSN:0277786X
CODEN:PSISDG
ISBN-13:9780819483805
Document type:Conference article (CA)
Conference name:Optoelectronic Imaging and Multimedia Technology
Conference date:October 18, 2010 - October 20, 2010
Conference location:Beijing, China
Conference code:83248
Sponsor:The Society of Photo-Optical Instrumentation Engineers (SPIE); Chinese Optical Society (COS)
Publisher:SPIE, P.O. Box 10, Bellingham, WA 98227-0010, United States
Abstract:The accuracy of the Shack-Hartmann wavefront sensor (SHWS) for measuring the distortion wavefront is mainly dependent upon the measurement accuracy of the centroid of the focal spot. Many methods have been presented to improve the accuracy of the wavefront centroid measurement by weakening the influence of various noises, such as the photo noise, the read-out noise, the background noise, unevenness and instability of the light source, etc. In general, these methods mainly use the first moment centroid algorithm to calculate the centroid in the whole sub-aperture. In this paper, we present an improved centroid measurement approach that calculate the centroid of the focal spot more precisely using the higher moment centroid method in an optimized detection window. Based on the improved method, the effects of various noises out of the optimized detection window are almost eliminated; furthermore, the noise influences in the optimized detection window are also weakened due to the more contributions of the focal spot intensity.The experimental results demonstrate that the precision and repeatability of focal spot centroid are more prominent than the results obtained via other commonly centroid methods. © 2010 SPIE.
Number of references:8
Main heading:Wavefronts
Controlled terms:Focusing - Light sources - Optimization - Sensors
Uncontrolled terms:Background noise - Centroid algorithm - Centroid detection - Centroid method - Detection windows - First moments - Focal spot - High moment - Higher moments - Improved methods - Measurement accuracy - Noise influence - Shack-Hartmann wavefront sensors - Subaperture
Classification code:711 Electromagnetic Waves - 711.1 Electromagnetic Waves in Different Media - 744 Lasers - 801 Chemistry - 921.5 Optimization Techniques
DOI:10.1117/12.870136
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 267>
Accession number:20104713409991
Title:Packaging of high power semiconductor laser arrays using a novel macro-channel cooler
Authors:Wang, Jingwei (1); Yuan, Zhenbang (2); Guo, Lu (2); Xiong, Lingling (1); Zhang, Yanxin (1); Peng, Chenhui (1); Li, Xiaoning (1); Liu, Xingsheng (1)
Author affiliation:(1) 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, Shaanxi 710119, China; (2) Xi'An Focuslight Technologies Co., LTD., No. 60 Xibu Road, Xi'an, Shaanxi 710119, China
Corresponding author:Wang, J.(wjw@opt.ac.cn)
Source title:Proceedings - 2010 11th International Conference on Electronic Packaging Technology and High Density Packaging, ICEPT-HDP 2010
Abbreviated source title:Proc. - Int. Conf. Electron. Packag. Technol. High Density Packag., ICEPT-HDP
Monograph title:Proceedings - 2010 11th International Conference on Electronic Packaging Technology and High Density Packaging, ICEPT-HDP 2010
Issue date:2010
Publication year:2010
Pages:92-97
Article number:5582358
Language:English
ISBN-13:9781424481422
Document type:Conference article (CA)
Conference name:2010 11th International Conference on Electronic Packaging Technology and High Density Packaging, ICEPT-HDP 2010
Conference date:August 16, 2010 - August 19, 2010
Conference location:Xi'an, China
Conference code:82121
Sponsor:Electron. Manuf. Packag. Technol. Soc. Chin. Inst. Electron.; IEEE Compon., Packag., Manuf. Technol. Soc. (IEEE-CPMT); Xidian University
Publisher:Association for Computing Machinery, 1515 Broadway, 17th Floor, New York, NY 10036-5701, United States
Abstract:High power semiconductor laser arrays have been widely used in many fields, such as pumping solid state laser aerospace, industry, medicine and display. For many applications, high power semiconductor lasers operating quasi-continuous wave (QCW) mode are demanded. For QCW laser, the output peak power is higher and average power is low. Therefore, the transient thermal density is very high. The most common method of removing the large amounts of waste heat in a semiconductor laser package is by using commercially-available copper micro-channel coolers (MCC). However, due to the coefficient of thermal expansion (CTE) mismatching between copper and laser chip, hardsolder cannot be directly used. On the other hand, indium solder has the problem of electro-thermal migration when the temperature grads were high in QCW mode. Furthermore, copper material is susceptible to erosion and corrosion. To overcome these hurdles in many applications, a novel macro channel cooler (MaCC) was presented in this work. The thermal behavior of MaCC-packaged high power semiconductor laser arrays in QCW mode was studied using finite element analysis (FEA). A high power of >250W QCW semiconductor laser array/bar using hard solder was fabricated. The performances of laser arrays, including output power, slope efficiency, threshold, conversion efficiency, spectral width, near field, lifetime etc. were characterized. The measured results indicated that the output power of a MaCC- packaged high power semiconductor laser array was very close to that of copper micro-channel cooler. Based on MaCC-packaged single laser array/bar, multiple-bar stack and two dimension area array lasers with output powers of several kilowatts and several tens of kilowatts were fabricated. © 2010 IEEE.
Number of references:14
Main heading:Semiconductor lasers
Controlled terms:Chip scale packages - Continuous wave lasers - Conversion efficiency - Cooling systems - Copper - Finite element method - High power lasers - Lasers - Packaging - Power electronics - Pumping (laser) - Solid state lasers - Thermal expansion - Waste heat
Uncontrolled terms:Average power - Coefficient of thermal expansion - Continuous Wave - Copper materials - Finite element analysis - High power semiconductor laser - High-power - Indium solders - Laser arrays - Laser chips - Measured results - Microchannel coolers - Near fields - Output peak power - Output power - Single lasers - Slope efficiencies - Spectral widths - Thermal behaviors - Thermal density - Thermal migration - Two-dimension
Classification code:951 Materials Science - 921.6 Numerical Methods - 744.1 Lasers, General - 715.2 Industrial Electronic Equipment - 714.2 Semiconductor Devices and Integrated Circuits - 694.1 Packaging, General - 641.2 Heat Transfer - 544.1 Copper - 525.5 Energy Conversion Issues - 525.4 Energy Losses (industrial and residential) - 421 Strength of Building Materials; Mechanical Properties
DOI:10.1109/ICEPT.2010.5582358
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 268>
Accession number:20105013487535
Title:Novel method to examine phase object by the use of TFT-LCD
Authors:Guo, Rongli (1); Yao, Baoli (2); Han, Jun (1); Yu, Xun (1); Nie, Liang (1); Duan, Cunli (1); Wang, Fan (4)
Author affiliation:(1) School of Optoelectronic Engineering, Xi'an Technological University, Xi'an 710032, 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 School of the Chinese Academy of Sciences, Beijing 100049, China; (4) School of Optoelectronic, Beijing Institute of Technology, Beijing 100081, China
Corresponding author:Guo, R.
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:7656
Issue:PART 1
Monograph title:5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment
Issue date:2010
Publication year:2010
Article number:76563D
Language:English
ISSN:0277786X
CODEN:PSISDG
ISBN-13:9780819480866
Document type:Conference article (CA)
Conference name:5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment
Conference date:April 26, 2010 - April 29, 2010
Conference location:Dalian, China
Conference code:82772
Sponsor:The Chinese Optical Society (COS); CAS, The Institute of Optics and Electronics (IOE); The Society of Photo-Optical Instrumentation Engineers (SPIE)
Publisher:SPIE, P.O. Box 10, Bellingham, WA 98227-0010, United States
Abstract:A novel method of using Thin Film Transistor-Liquid Crystal Display(TFT-LCD) as phase filter in Zernike phase contrast method is introduced. First, theoretical analysis of using TFT-LCD as programmable phase modulator instead of conventional phase contrast plate to filter the spectrum is conducted. Then the phase modulation property curve of the used TFT-LCD is measured which is function of gray scales in modified Mach-Zehnder interferometer, and frequency filtering is used to eliminate interferogram's noise and the correlation method is adopted to determine the mini-displacement of interference fringe. At last, Experiment conducted in 4F system. The result showed that the method is effective in qualitative observation of phase distribution for a small phase object. © 2010 Copyright SPIE - The International Society for Optical Engineering.
Number of references:13
Main heading:Liquid crystal displays
Controlled terms:Liquid crystals - Manufacture - Measurement theory - Optical testing - Phase modulation - Technology - Thin film transistors
Uncontrolled terms:4-f system - Frequency filtering - Gray scale - Interference fringe - Interferograms - Modulation properties - Novel methods - Phase contrasts - Phase distribution - Phase filters - Phase modulator - Phase object - Qualitative observations - TFT-LCDs - Zernike - Zernike phase contrast
Classification code:922 Statistical Methods - 901 Engineering Profession - 804 Chemical Products Generally - 741.3 Optical Devices and Systems - 716 Telecommunication; Radar, Radio and Television - 714.2 Semiconductor Devices and Integrated Circuits - 537.1 Heat Treatment Processes
DOI:10.1117/12.866452
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 269>
Accession number:20104713408834
Title:Scattering loss of a new fluid state laser material
Authors:Gui, Luo (1); Hou, Chaoqi (2); Peng, Bo (2); Fan, Dianyuan (1); Wei, Wei (2)
Author affiliation:(1) National Laboratory on High Power Laser and Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai, 201800, 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
Corresponding author:Peng, B.(bpeng@fudan.edu.cn)
Source title:Zhongguo Jiguang/Chinese Journal of Lasers
Abbreviated source title:Zhongguo Jiguang
Volume:37
Issue:10
Issue date:October 2010
Publication year:2010
Pages:2605-2609
Language:Chinese
ISSN:02587025
CODEN:ZHJIDO
Document type:Journal article (JA)
Publisher:Science Press, 18,Shuangqing Street,Haidian, Beijing, 100085, China
Abstract:The scattering loss of a new mixed fluid state laser material varying with refractive index and temperature is studied experimentally. A platform of laser amplifier is established, on which the laser performance of the new material is shown by a comparison between the fluid state laser material and Nd-glass solid laser material. Experimental results show that the fluid state laser material possesses typical laser gain, but its scattering loss is sensitive to the variation of refractive index and temperature. The scattering loss can be controlled under 0.0047 cm<sup>-1</sup> with accurate refractive index matching. The results above indicate that the method of refractive index matching is able to ensure an acceptable scattering loss of this new type of fluid state laser material, so this new material has a potential ability in high power laser systems.
Number of references:10
Main heading:Glass lasers
Controlled terms:Fluids - High power lasers - Lasers - Light refraction - Neodymium lasers - Refractive index - Refractometers - Scattering
Uncontrolled terms:Fluid state - High-power laser systems - Laser amplifiers - Laser gain - Laser materials - Laser performance - Mixed fluids - New material - Potential ability - Refractive index matching - Scattering loss - Solid laser
Classification code:631 Fluid Flow - 741.1 Light/Optics - 744.1 Lasers, General - 744.4 Solid State Lasers - 941.3 Optical Instruments
DOI:10.3788/CJL20103710.2605
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 270>
Accession number:20110113550874
Title:Theoretical analysis of light transmission in a perfectly circular double clad fiber using coupled mode method
Authors:Xu, Zhongnan (1); Liu, Zejin (1); Duan, Kailiang (2); Zhao, Wei (2)
Author affiliation:(1) College of Optoelectronic Science and Engineering, National University of Defense Technology, No. 137, Yanwachi Street, Changsha, Hunan, 410073, 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
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:7843
Monograph title:High-Power Lasers and Applications V
Issue date:2010
Publication year:2010
Article number:784313
Language:English
ISSN:0277786X
CODEN:PSISDG
ISBN-13:9780819483737
Document type:Conference article (CA)
Conference name:High-Power Lasers and Applications V
Conference date:October 18, 2010 - October 19, 2010
Conference location:Beijing, China
Conference code:83313
Sponsor:The Society of Photo-Optical Instrumentation Engineers (SPIE); Chinese Optical Society (COS)
Publisher:SPIE, P.O. Box 10, Bellingham, WA 98227-0010, United States
Abstract:Light propagation in a perfect circular double clad fiber (DCF) is numerically investigated by using the coupled mode method with translating the DCF into a single mode fiber (SMF) and an annular core fiber (ACF). The results show that for the coupling coefficients between the LP<inf>01</inf> mode of the SMF and the guided modes (LP<inf>0n</inf> modes) of the ACF, the high-order mode has a larger coupling coefficient than the low-order mode for the ACF. By using the coupled mode equations the field distribution in the DCF core is calculated, the results show that the power shows a quasi-periodic distribution along the DCF core and its average period increases with increasing wavelength for different DCF parameters. The simulation results agree with the light ray propagation in the DCF. © 2010 Copyright SPIE - The International Society for Optical Engineering.
Number of references:15
Main heading:Fibers
Controlled terms:Fiber lasers - Laser theory - Light propagation - Light transmission - Position measurement - Single mode fibers
Uncontrolled terms:annular core fiber - Average period - Clad fibers - Coupled mode equation - Coupled mode methods - Coupled mode theory - Coupling coefficient - double clad fiber - Double clad fibers - Field distribution - Guided modes - High order mode - Quasi-periodic - Ray propagation - Simulation result
Classification code:741.1 Light/Optics - 741.1.2 Fiber Optics - 744.1 Lasers, General - 812 Ceramics, Refractories and Glass - 817 Plastics and Other Polymers: Products and Applications - 943.2 Mechanical Variables Measurements
DOI:10.1117/12.865515
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 271>
Accession number:20102112955420
Title:Energy-efficent time synchronization algorithm for wireless sensor networks
Authors:Wu, Wanrong (1); Wang, Qianping (1); Wang, Wei (1); Su, Yu-E. (1); An, Yuan (2)
Author affiliation:(1) School of Computer Science, China University of Mining and Technology, Xuzhou, China; (2) Optical Directional and Pointing Technique Research Center, Xi' an Institute of Optics Precision Mechanics, Chinese Academy of Sciences, Xi' an, China
Corresponding author:Wu, W.(wwanrong@gmail.com)
Source title:2010 The 2nd International Conference on Computer and Automation Engineering, ICCAE 2010
Abbreviated source title:Int. Conf. Comput. Autom. Eng., ICCAE
Volume:1
Monograph title:2010 The 2nd International Conference on Computer and Automation Engineering, ICCAE 2010
Issue date:2010
Publication year:2010
Pages:530-534
Article number:5451889
Language:English
ISBN-13:9781424455850
Document type:Conference article (CA)
Conference name:2nd International Conference on Computer and Automation Engineering, ICCAE 2010
Conference date:February 26, 2010 - February 28, 2010
Conference location:Singapore, Singapore
Conference code:80373
Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States
Abstract:In wireless sensor networks, energy efficiency is an important standard for evaluating the effectiveness of the time synchronization protocols. Hence, energy should be conserved as much as possible provided that algorithm can achieve a certain accuracy. In this paper, we propose an energy efficient time synchronization algorithm in which each layer of the network can be synchronized merely by receiving broadcast messages rather than relying on two-way message exchange. Simulation results show that our improved strategy reduced the energy consumption and prolonged the lifetime of network compared with TPSN. ©2010 IEEE.
Number of references:13
Main heading:Wireless sensor networks
Controlled terms:Algorithms - Broadcasting - Computer simulation - Electric load forecasting - Energy conservation - Energy efficiency - Network protocols - Sensor networks - Synchronization
Uncontrolled terms:Broadcast messages - Energy consumption - Energy efficient - Message exchange - RBS - Simulation result - Time synchronization
Classification code:921 Mathematics - 732 Control Devices - 731.1 Control Systems - 723.5 Computer Applications - 723 Computer Software, Data Handling and Applications - 961 Systems Science - 722.4 Digital Computers and Systems - 716.4 Television Systems and Equipment - 716.3 Radio Systems and Equipment - 706.1 Electric Power Systems - 525.2 Energy Conservation - 722.3 Data Communication, Equipment and Techniques
DOI:10.1109/ICCAE.2010.5451889
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 272>
Accession number:20111213768127
Title:Focal plane design of Chang'e-1 satellite CCD stereo-camera and laboratory radiation calibration
Authors:Song, Zongxi (1); Zhao, Baochang (1); Gao, Wei (1); Yang, Jianfeng (1); Ruan, Ping (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:Song, Z.(songxi@opt.ac.cn)
Source title:Guangxue Xuebao/Acta Optica Sinica
Abbreviated source title:Guangxue Xuebao
Volume:30
Issue:12
Issue date:December 2010
Publication year:2010
Pages:3508-3514
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 special focal plane design and radiation calibration of Chang'e-1 satellite CCD stereo-camera are discussed. A wide-angle, telecentric and orthoscopic optical lens coupled with an area array CCD is used as a sensor in Chang'e-1 satellite CCD stereo camera to complete the three-line array self-propelling-sweeping imaging. But with the existence of shutter smear, the exposure time has some great differences between the foresight, vertical sight and back sight. It brings difficulties to the radiometric calibration. This paper presents a solution of setting up a three-slit mask in front of the CCD focal plane, which makes the three line exposure time almost the same and after the residuals in the laboratory calibration are further adjusted, good result is obtained. This paper also introduces other performances in the radiation calibration including the estimation of the shortest exposure time, the registration of the saturation radiance, the dark current noise test, the linearity of CCD pixel response and the uncertainties of relative calibration and absolute calibration.
Number of references:20
Main heading:CCD cameras
Controlled terms:Calibration - Cameras - Focusing - Lenses - Optical design - Satellites
Uncontrolled terms:Absolute calibration - Array CCD - Dark current noise - Exposure-time - Focal Plane - Laboratory radiations - Line arrays - Lunar satellite - Optical lens - Radiation calibration - Radiometric calibrations - Relative calibrations - Slit mask - Stereo cameras
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 - 742.2 Photographic Equipment - 741.1 Light/Optics - 655.2 Satellites - 741.3 Optical Devices and Systems
DOI:10.3788/AOS20103012.3508
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 273>
Accession number:20105013476454
Title:Spacing-tunable multi-wavelength fiber laser based on cascaded four-wave mixing in highly nonlinear photonic-crystal fiber
Authors:Sun, H.B. (1); Liu, X.M. (1); Wang, L.R. (1); Li, X.H. (1); Mao, D. (1)
Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Science, Xian 710119, China
Corresponding author:Liu, X. M.(liuxueming72@yahoo.com)
Source title:Laser Physics
Abbreviated source title:Laser Phys.
Volume:20
Issue:11
Issue date:November 2010
Publication year:2010
Pages:1994-2000
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 multi-wavelength fiber laser based on the cascaded four-wave mixing in highly-nonlinear photonic-crystal fiber is proposed and investigated. The cascade operation is initiated by two strong pump waves boosted by multi-mode pumping erbium/ytterbium co-doped double-cladding fiber amplification technique. A segment of highly-nonlinear near-zero-dispersion-flattened photonic crystal fiber is employed to induce highly efficient cascaded four-wave mixing. The wavelength spacing can be continuously tunable by stretching the fiber Bragg grating. Experimental results show that multiple wavelengths with a high optical side-mode suppression-ratio of >30 dB are achieved. Furthermore, the proposed multi-wavelength fiber laser exhibits an excellent stability at room temperature. © 2010 Pleiades Publishing, Ltd.
Number of references:26
Main heading:Photonic crystal fibers
Controlled terms:Cladding (coating) - Crystal whiskers - Fiber Bragg gratings - Fiber lasers - Fibers - Four wave mixing - Photonic crystals
Uncontrolled terms:Amplification technique - Cascade operation - Erbium/ytterbium co-doped double-cladding fiber - Highly nonlinear - Mode suppression - Multi wavelength fiber laser - Multimodes - Multiple wavelengths - Room temperature - Strong pump - Wavelength spacing
Classification code:535.1 Metal Rolling - 741 Light, Optics and Optical Devices - 801.4 Physical Chemistry - 812 Ceramics, Refractories and Glass - 817 Plastics and Other Polymers: Products and Applications - 951 Materials Science
DOI:10.1134/S1054660X10210115
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 274>
Accession number:20102212974291
Title:Experimental study on high power all-fiber laser
Authors:Zhao, Baoyin (1); Duan, Kailang (1); Zhao, Wei (1); Li, Cheng (1); Wang, Yishan (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:Duan, K.(kl.duan@tom.com)
Source title:Chinese Optics Letters
Abbreviated source title:Chin. Opt. Lett.
Volume:8
Issue:4
Issue date:April 2010
Publication year:2010
Pages:404-406
Language:English
ISSN:16717694
Document type:Journal article (JA)
Publisher:Science Press, 18,Shuangqing Street,Haidian, Beijing, 100085, China
Abstract:A high power all-fiber laser is experimentally studied. A monolithic fiber laser system with only one stage of resonator cavity is constructed and 404-W continuous wave (CW) output power is obtained. Its optical-to-optical conversion efficiency is up to 64%. The laser central wavelength is at 1081 nm with the spectral full-width at half-maximum (FWHM) of 2 nm. The laser setup can work with excellent stability; in the long time of high power operation, no thermal distortions or damages are observed. © 2010 Chinese Optics Letters.
Number of references:10
Main heading:Fiber lasers
Controlled terms:Conversion efficiency
Uncontrolled terms:All-fiber lasers - Central wavelength - Continuous wave output power - Experimental studies - High-power - High-power operation - Laser setups - Optical conversion efficiency - Resonator cavities - Thermal distortions
Classification code:525.5 Energy Conversion Issues - 741.1.2 Fiber Optics - 744.4 Solid State Lasers
DOI:10.3788/COL20100804.0404
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 275>
Accession number:20101612867663
Title:Modelling and simulation of a two-axis tracking system
Authors:Zhao, Z.M. (1); Yuan, X.Y. (1); Guo, Y. (1); Xu, F. (2); Li, Z.G. (3)
Author affiliation:(1) Key Laboratory of Education Ministry for Modern Design and Rotor-bearing System, Xi'An Jiaotong University, Xi'an 710049, China; (2) Institute of Modern Technologies, Key Laboratory of Modern Optical Technologies, Jiang Su Province Soochow University, SuZhou, China; (3) Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, China
Corresponding author:Yuan, X. Y.(Xyyuan@mail.xjtu.edu.cn)
Source title:Proceedings of the Institution of Mechanical Engineers. Part I: Journal of Systems and Control Engineering
Abbreviated source title:Proc Inst Mech Eng Part I J Syst Control Eng
Volume:224
Issue:2
Issue date:March 1, 2010
Publication year:2010
Pages:125-137
Language:English
ISSN:09596518
CODEN:PMJEE6
Document type:Journal article (JA)
Publisher:Professional Engineering Publishing Ltd., 1 Birdcage Walk, London, SW1H 9JJ, United Kingdom
Abstract:In this paper, the modelling and simulation of a two-axis tracking system are introduced. First, dynamic modelling of a two-axis tracking system that is based on the Lagrange-Maxwell dynamic equation is presented. According to the established dynamic equation the coupling of system velocity and the inertia characteristics between the two axes are analysed. Then, the controller of the tracking system is designed using the inverse system method. Based on a certain type two-axis tracking system, the simulation is then made with MATLAB/Simulink, which includes position tracking and tracking error analysis. The simulation using Adams and Simulink is also presented. A comparison of the results from the two kinds of simulation indicates that the modelling of the two-axis tracking system is reasonable and the simulation results are rational. © 2010 Author.
Number of references:20
Main heading:Navigation
Controlled terms:Computer simulation - Error analysis - Maxwell equations
Uncontrolled terms:Coupling dynamics - Dynamic equations - Dynamic modelling - Inverse system methods - Lagrange - MATLAB /simulink - Modelling and simulations - Position tracking - Simulation result - Simulink - Tracking error analysis - Tracking system - Two-axis
Classification code:921.6 Numerical Methods - 921.2 Calculus - 723.5 Computer Applications - 716.3 Radio Systems and Equipment - 701.2 Magnetism: Basic Concepts and Phenomena - 701.1 Electricity: Basic Concepts and Phenomena - 655.1 Spacecraft, General - 434.4 Waterway Navigation - 431.5 Air Navigation and Traffic Control
DOI:10.1243/09596518JSCE830
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 276>
Accession number:20102413003392
Title:Outfield calibration analysis of spatially modulated imaging fourier transform spectrometer
Authors:Gao, Jing (1); Ji, Zhongying (1); Cui, Yan (2); Wang, Zhonghou (1); Shi, Dalian (1)
Author affiliation:(1) Key Laboratory of Spectral Imaging Technology, 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:Gao, J.(gaojing@opt.ac.cn)
Source title:Guangxue Xuebao/Acta Optica Sinica
Abbreviated source title:Guangxue Xuebao
Volume:30
Issue:5
Issue date:May 2010
Publication year:2010
Pages:1321-1326
Language:Chinese
ISSN:02532239
CODEN:GUXUDC
Document type:Journal article (JA)
Publisher:Chinese Optical Society, P.O. Box 80, Xi'an, 710068, China
Abstract:Spatially modulated imaging Fourier transform spectrometer (SMIFTS) is an instrument that depended on interference, it can obtain interferential information and achieve spectral information by Fourier transform. The lamp-house of outdoor calibration is sun, which can offset effective lamp-house of laboratory calibration (sun simulation)'s disadvantage of low shortwave radiation and signal to noise ratio (SNR), also simulate sun reflection spectrum speciality availably of SMIFTS object, obtained interferential information exactly, result of laboratory radiation calibration is validated. Principle, method and result of the experiment are shown, used sun-aerosphere-diffuse reflection method and standard-radiation-transfer method to accomplish outfield calibration in Dali. The results indicated that the uncertainty of sun-aerosphere-diffuse reflection method is 6.3%, uncertainty of sun-aerosphere-diffuse reflection method is 6.0%.
Number of references:15
Main heading:Fourier transforms
Controlled terms:Bolometers - Calibration - Reflection - Signal to noise ratio - Spacecraft instruments - Spectrometers - Spectrometry - Sun - Wavelet transforms
Uncontrolled terms:Diffuse reflection - Laboratory radiations - Modulated imaging - Reflection spectra - Short-wave radiation - Spatial modulation - Spatial modulations - Spectral information - Transfer method - Uncertainty
Classification code:921.3 Mathematical Transformations - 941 Acoustical and Optical Measuring Instruments - 941.3 Optical Instruments - 944.7 Radiation Measuring Instruments - 941.4 Optical Variables Measurements - 943 Mechanical and Miscellaneous Measuring Instruments - 944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments - 942 Electric and Electronic Measuring Instruments - 902.2 Codes and Standards - 801 Chemistry - 655.1 Spacecraft, General - 657.2 Extraterrestrial Physics and Stellar Phenomena - 711 Electromagnetic Waves - 716.1 Information Theory and Signal Processing - 741.1 Light/Optics - 741.3 Optical Devices and Systems
DOI:10.3788/AOS20103005.1321
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 277>
Accession number:20100712719221
Title:Robust tensor analysis with L1-norm
Authors:Pang, Yanwei (1); Li, Xuelong (2); Yuan, Yuan (3)
Author affiliation:(1) School of Electronic Information Engineering, 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, China; (3) School of Engineering and Applied Science, Aston University, Birmingham, United Kingdom
Corresponding author:Pang, Y.(pyw@tju.edu.cn)
Source title:IEEE Transactions on Circuits and Systems for Video Technology
Abbreviated source title:IEEE Trans Circuits Syst Video Technol
Volume:20
Issue:2
Issue date:February 2010
Publication year:2010
Pages:172-178
Article number:4812108
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:Tensor analysis plays an important role in modern image and vision computing problems. Most of the existing tensor analysis approaches are based on the Frobenius norm, which makes them sensitive to outliers. In this paper, we propose L1-norm-based tensor analysis (TPCA-L1), which is robust to outliers. Experimental results upon face and other datasets demonstrate the advantages of the proposed approach. © 2006 IEEE.
Number of references:26
Main heading:Tensors
Uncontrolled terms:Analysis approach - Data sets - Frobenius norm - L1-norm - Vision computing
Classification code:921.1 Algebra
DOI:10.1109/TCSVT.2009.2020337
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 278>
Accession number:20111213768121
Title:Static simulation experiment of image motion measurement based on optical joint transform correlator
Authors:Yi, Hongwei (1); Zhao, Hui (1); Wen, Desheng (1); Li, Yingcai (1)
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, Shaanxi 710119, China
Corresponding author:Yi, H.(yi_hongwei@126.com)
Source title:Guangxue Xuebao/Acta Optica Sinica
Abbreviated source title:Guangxue Xuebao
Volume:30
Issue:12
Issue date:December 2010
Publication year:2010
Pages:3471-3475
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 optical joint transform correlator (JTC) is an effective technical way for image motion measurement of the space camera. Its basic principles are presented, and performance is evaluated through static simulation experiment. A calibrated image set is tested by the experimental device. The results show that, the measurement accuracy can be controlled below 0.2 pixel in two directions, which is satisfied for the space camera. The influence of centroiding window size on cross-correlation peaks locating is analyzed, based on which, intensity weighted centroiding (IWC) is proposed instead of the traditional centroiding method, by which not only the influence of centroiding window size on image motion measurement is reduced, but also the measurement accuracy is improved.
Number of references:15
Main heading:Measurements
Controlled terms:Cameras - Imaging systems - Optical correlation - Pixels
Uncontrolled terms:Basic principles - Centroid calculation - Centroiding - Cross correlations - Image motion - Image motion measurement - Image sets - Joint transform correlator (JTC) - Measurement accuracy - Optical joint transform correlator - Space cameras - Static simulations - Sub pixels - Two directions - Window Size
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 - 746 Imaging Techniques - 741.1 Light/Optics - 741 Light, Optics and Optical Devices - 742.2 Photographic Equipment
DOI:10.3788/AOS20103012.3471
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 279>
Accession number:20105213525846
Title:A hyperspectral images compression algorithm based on 3D bit plane transform
Authors:Zhang, Lei (1); Xiang, Libin (2); Zhang, Sam (2); Quan, Shengxue (2)
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, China; (2) Academy of Opto-Electronics, Chinese Academy of Sciences, Beijing, China; (3) Shenyang Institute of Aeronautical Engineering, Shenyang, China
Corresponding author:Zhang, L.(zhangl_72@yahoo.com.cn)
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:7658
Monograph title:5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optoelectronic Materials and Devices for Detector, Imager, Display, and Energy Conversion Technology
Issue date:2010
Publication year:2010
Article number:76585R
Language:English
ISSN:0277786X
CODEN:PSISDG
ISBN-13:9780819480880
Document type:Conference article (CA)
Conference name:5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optoelectronic Materials and Devices for Detector, Imager, Display, and Energy Conversion Technology
Conference date:April 26, 2010 - April 29, 2010
Conference location:Dalian, China
Conference code:82920
Sponsor:The Chinese Optical Society (COS); CAS, The Institute of Optics and Electronics (IOE); The Society of Photo-Optical Instrumentation Engineers (SPIE)
Publisher:SPIE, P.O. Box 10, Bellingham, WA 98227-0010, United States
Abstract:According the analyses of the hyper-spectral images, a new compression algorithm based on 3-D bit plane transform is proposed. The spectral coefficient is higher than the spatial. The algorithm is proposed to overcome the shortcoming of 1-D bit plane transform for it can only reduce the correlation when the neighboring pixels have similar values. The algorithm calculates the horizontal, vertical and spectral bit plane transform sequentially. As the spectral bit plane transform, the algorithm can be easily realized by hardware. In addition, because the calculation and encoding of the transform matrix of each bit are independent, the algorithm can be realized by parallel computing model, which can improve the calculation efficiency and save the processing time greatly. The experimental results show that the proposed algorithm achieves improved compression performance. With a certain compression ratios, the algorithm satisfies requirements of hyper-spectral images compression system, by efficiently reducing the cost of computation and memory usage. © 2010 Copyright SPIE - The International Society for Optical Engineering.
Number of references:8
Main heading:Three dimensional
Controlled terms:Algorithms - Computational efficiency - Display devices - Energy conversion - Image compression - Manufacture - Materials testing - Optoelectronic devices - Parallel architectures - Spectroscopy - Technology - Testing
Uncontrolled terms:Bit planes - Calculation efficiency - Compression algorithms - Compression performance - Compression ratios - Hyper-spectral images - HyperSpectral - Memory usage - Parallel computing models - Processing Time - Spectral coefficients - Transform matrices
Classification code:723 Computer Software, Data Handling and Applications - 723.5 Computer Applications - 741 Light, Optics and Optical Devices - 951 Materials Science - 741.3 Optical Devices and Systems - 901 Engineering Profession - 921 Mathematics - 801 Chemistry - 722.2 Computer Peripheral Equipment - 722 Computer Systems and Equipment - 422 Strength of Building Materials; Test Equipment and Methods - 422.2 Strength of Building Materials : Test Methods - 423 Non Mechanical Properties and Tests of Building Materials - 423.2 Non Mechanical Properties of Building Materials: Test Methods - 525.5 Energy Conversion Issues - 537.1 Heat Treatment Processes
DOI:10.1117/12.867625
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 280>
Accession number:20103713225615
Title:Study of photoinduced birefringence characteristics of B-type and M-type in bacteriorhodopsin film
Authors:Han, Junhe (1); Yao, Baoli (2); Gao, Peng (2)
Author affiliation:(1) School of Physics and Electronics, Henan University, Henan 475004, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Shaanxi 710119, China
Corresponding author:Han, J.(junhh@henu.edu.cn)
Source title:Zhongguo Jiguang/Chinese Journal of Lasers
Abbreviated source title:Zhongguo Jiguang
Volume:37
Issue:8
Issue date:August 2010
Publication year:2010
Pages:2045-2050
Language:Chinese
ISSN:02587025
CODEN:ZHJIDO
Document type:Journal article (JA)
Publisher:Science Press, 18,Shuangqing Street,Haidian, Beijing, 100085, China
Abstract:The anisotropically absorbing bacteriorhodopsin (BR) molecules can be approximated by linear oscillators. BR film is isotropic in its initial state because of the random distribution of the BR molecules. Upon excitation by a linearly polarized light, those molecules with the dipole moment aligned closed to the polarization direction of the excitation light are dominantly pumped to the intermediate state and produce photoisomerization. However, those with the dipole vector in the perpendicular direction of the pumping beam have a little probability occurring the above change. Due to the change of molecular structure, the refractive index and absorption coefficient of the BR molecules change, then the macroscopic anisotropy was induced as a result. The photoinduced birefringence of the BR film is measured by the orthogonal polarization detection, the experimental results are basically consistent with the simulated results, which are obtained by utilizing the two-state model of BR molecule photocycle.
Number of references:15
Main heading:Excited states
Controlled terms:Anisotropy - Birefringence - Computer simulation - Light - Molecules - Polarization - Refractive index
Uncontrolled terms:Absorption coefficients - Bacteriorhodopsin - Bacteriorhodopsin (bR) - Bacteriorhodopsin films - bR film - Excitation light - Information optics - Initial state - Intermediate state - Linear oscillator - Linearly polarized light - Macroscopic anisotropy - Orthogonal polarizations - Photo-induced anisotropy - Photocycles - Photoinduced birefringence - Polarization direction - Random distribution - Simulated results - Two-state model
Classification code:723.5 Computer Applications - 741.1 Light/Optics - 931.2 Physical Properties of Gases, Liquids and Solids - 931.3 Atomic and Molecular Physics
DOI:10.3788/CJL20103708.2045
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 281>
Accession number:20103413182846
Title:An intelligent control system for X-ray framing camera
Authors:Li, Yan (1); Bai, Yonglin (3); Wang, Bo (3); Liu, Baiyu (3); Xue, Yingdong (1); Bai, Xiaohong (3); Qin, Junjun (3); Zhang, Wei (1); Gou, Yongsheng (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) Graduate School, Chinese Academy of Sciences, Beijing 100039, 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:Li, Y.
Source title:2010 International Conference on Intelligent Computation Technology and Automation, ICICTA 2010
Abbreviated source title:Int. Conf. Intelligent Comput. Technol. Autom., ICICTA
Volume:1
Monograph title:2010 International Conference on Intelligent Computation Technology and Automation, ICICTA 2010
Issue date:2010
Publication year:2010
Pages:615-618
Article number:5523013
Language:English
ISBN-13:9780769540771
Document type:Conference article (CA)
Conference name:2010 International Conference on Intelligent Computation Technology and Automation, ICICTA 2010
Conference date:May 11, 2010 - May 12, 2010
Conference location:Changsha, China
Conference code:81471
Sponsor:IEEE Intelligent Computation Society; Res. Assoc. Intelligent Comput. Technol. Autom.; Hunan University; Changsha University of Science and Technology; Hunan University of Science and Technology
Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States
Abstract:An intelligent system of X-ray framing camera is designed and realized to fulfill the demand of being intelligent and automotive in the diagnosis system for Inertial Confinement Fusion (ICF). Being controlled by PC104 embedded host computer and combining with Interface Card, the camera system can achieve human-computer interface interactive, networking, camera working point setting, mode switching and working condition monitoring. The system has characterization of self-diagnosing, self-adjusting, and self-protection, which can not only satisfy the requirements of the automotive networking test, but also realize the consistent and accurate of the measurement results, and the stability and dependability of the framing camera are improved. The experimental results show that the gate pulse jitter is confined to 10 ps, screen voltage keeps a very small variation less than 2%, rising and falling edge are shorter than 200 ns, the flat-topped time lasts for 10 us. The new system makes great significance on improving the physical diagnosis on ICF studies. © 2010 IEEE.
Number of references:7
Main heading:Computer control systems
Controlled terms:Cameras - Condition monitoring - Control theory - Diagnosis - Inertial confinement fusion - Intelligent control - Intelligent systems - Jitter - Motion picture cameras - X rays
Uncontrolled terms:Camera systems - Diagnosis systems - Embedded computers - Falling edge - Framing Camera - Gate pulse - Host computers - Human computer interfaces - Interface cards - Measurement results - Mode-switching - New system - Screen voltages - Self-adjusting - Small variations - Working point - X-ray framing camera
Classification code:932.2.1 Fission and Fusion Reactions - 932.1 High Energy Physics - 742.2 Photographic Equipment - 731.1 Control Systems - 723.4 Artificial Intelligence - 718 Telephone Systems and Related Technologies; Line Communications - 717 Optical Communication - 716 Telecommunication; Radar, Radio and Television - 706 Electric Transmission and Distribution - 603 Machine Tools - 461.6 Medicine and Pharmacology
DOI:10.1109/ICICTA.2010.244
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 282>
Accession number:20102212974925
Title:Local feature based geometric-resistant image information hiding
Authors:Gao, Xinbo (1); Deng, Cheng (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, China; (3) School of Computer Engineering, Nanyang Technological University, Singapore 639798, Singapore
Corresponding author:Tao, D.(dctao@ntu.edu.sg)
Source title:Cognitive Computation
Abbreviated source title:Cognitive Comput.
Volume:2
Issue:2
Issue date:June 2010
Publication year:2010
Pages:68-77
Language:English
ISSN:18669956
E-ISSN:18669964
Document type:Journal article (JA)
Publisher:Springer New York, 233 Springer Street, New York, NY 10013-1578, United States
Abstract:Watermarking aims to hide particular information into some carrier but does not change the visual cognition of the carrier itself. Local features are good candidates to address the watermark synchronization error caused by geometric distortions and have attracted great attention for content-based image watermarking. This paper presents a novel feature point-based image watermarking scheme against geometric distortions. Scale invariant feature transform (SIFT) is first adopted to extract feature points and to generate a disk for each feature point that is invariant to translation and scaling. For each disk, orientation alignment is then performed to achieve rotation invariance. Finally, watermark is embedded in middle-frequency discrete Fourier transform (DFT) coefficients of each disk to improve the robustness against common image processing operations. Extensive experimental results and comparisons with some representative image watermarking methods confirm the excellent performance of the proposed method in robustness against various geometric distortions as well as common image processing operations. © Springer Science+Business Media, LLC 2010.
Number of references:26
Main heading:Feature extraction
Controlled terms:Alignment - Block codes - Discrete Fourier transforms - Disks (structural components) - Geometry - Image processing - Imaging systems - Military photography - Watermarking
Uncontrolled terms:Content-based - Excellent performance - Feature point - Geometric distortion - Image information - Image Watermarking - Local feature - Rotation invariance - Scale invariant feature transforms - Visual Cognition - Watermark synchronization
Classification code:741 Light, Optics and Optical Devices - 741.1 Light/Optics - 742.1 Photography - 921.3 Mathematical Transformations - 746 Imaging Techniques - 811.1.1 Papermaking Processes - 921 Mathematics - 751.1 Acoustic Waves - 723.5 Computer Applications - 723.2 Data Processing and Image Processing - 404.1 Military Engineering - 408.2 Structural Members and Shapes - 601.1 Mechanical Devices - 603.1 Machine Tools, General - 716 Telecommunication; Radar, Radio and Television - 723.1 Computer Programming
DOI:10.1007/s12559-010-9033-8
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 283>
Accession number:20101212793985
Title:The data processing of the temporarily and spatially mixed modulated polarization interference imaging spectrometer
Authors:Jian, Xiaohua (1); Zhang, Chunmin (1); Zhang, Lin (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 Laboratoryof 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.(zcm@mail.xjtu.edu.cn)
Source title:Optics Express
Abbreviated source title:Opt. Express
Volume:18
Issue:6
Issue date:March 15, 2010
Publication year:2010
Pages:5674-5680
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 the basic imaging theory of the temporally and spatially mixed modulated polarization interference imaging spectrometer (TSMPHS), a method of interferogram obtaining and processing under polychromatic light is presented. Especially, instead of traditional Fourier transform spectroscopy, according to the unique imaging theory and OPD variation of TSMPIIS, the spectrum is reconstructed respectively by wavelength. In addition, the originally experimental interferogram obtained by TSMPIIS is processed in this new way, the satisfying result of interference data and reconstructed spectrum prove that the method is very precise and feasible, which will great improve the performance of TSMPIIS. © 2010 Optical Society of America.
Number of references:13
Main heading:Data processing
Controlled terms:Interferometry - Polarization - Spectrometers - Spectrometry - Spectroscopy
Uncontrolled terms:Fourier Transform spectroscopy - Imaging theory - Interference data - Interference imaging - Interferograms - Polychromatic lights
Classification code:941.3 Optical Instruments - 932.2 Nuclear Physics - 931.3 Atomic and Molecular Physics - 801 Chemistry - 941.4 Optical Variables Measurements - 741.3 Optical Devices and Systems - 723.2 Data Processing and Image Processing - 711.1 Electromagnetic Waves in Different Media - 701.1 Electricity: Basic Concepts and Phenomena - 741.1 Light/Optics
DOI:10.1364/OE.18.005674
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 284>
Accession number:20140817363773
Title:Determination of dispersion and nonlinear coefficients of photonic crystal fibers by degenerated FWM method
Authors:Ge, Wenping (1); Lin, Aoxiang (1); Guintrand, Cyril (1); Toulouse, Jean (1)
Author affiliation:(1) Center for Optical Technologies and Physics Department, Lehigh University, Bethlehem, PA 18015, United States; (2) College of Information science and engineering, Xinjiang University, Urumqi, Xinjiang, 830046, China; (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
Corresponding author:Ge, W.(wenpingge@yahoo.com)
Source title:Optics InfoBase Conference Papers
Abbreviated source title:Opt.InfoBase Conf. Papers
Monograph title:Conference on Lasers and Electro-Optics, CLEO 2010
Issue date:2010
Publication year:2010
Language:English
E-ISSN:21622701
ISBN-13:9781557528896
Document type:Conference article (CA)
Conference name:Conference on Lasers and Electro-Optics, CLEO 2010
Conference date:May 16, 2010 - May 21, 2010
Conference location:San Jose, CA, United states
Conference code:102748
Publisher:Optical Society of America, 2010 Massachusetts Ave, NW, Washington, DC, DC 20036-1023, United States
Abstract:By using degenerated four wave mixing (FWM) method and counting the efficiency of the newly created frequency, we easily obtained dispersion, dispersion slope and nonlinear coefficients by fitting the experimental data with several well-known functions. © 2010 Optical Society of America.
Number of references:9
Main heading:Four wave mixing
Controlled terms:Photonic crystal fibers
Uncontrolled terms:Degenerated four-wave mixing - Dispersion slopes - Nonlinear coefficient
Classification code:711.1 Electromagnetic Waves in Different Media - 951 Materials Science
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 285>
Accession number:20101912918375
Title:Stability analysis of on-board calibration system of spatially modulated imaging Fourier transform spectrometer
Authors:Gao, Jing (1); Ji, Zhong-Ying (1); Wang, Zhong-Hou (1); Cui, Yan (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:Gao, J.(gaojing@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:30
Issue:4
Issue date:April 2010
Publication year:2010
Pages:1013-1017
Language:Chinese
ISSN:10000593
CODEN:GYGFED
Document type:Journal article (JA)
Publisher:Science Press, 18,Shuangqing Street,Haidian, Beijing, 100085, China
Abstract:Spatially modulated imaging Fourier transform spectrometer (SMIFTS) was an instrument that depended on interference, and after calibration, the reconstruction spectrum can quantificationally reflect the diffuse reflection of target under sunshine. On-board calibration of SMIFTS confirmed the change of SMIFTS according to relative spectrum calibration, inspected long-time attenuation of SMIFTS optical system, and corrected export data of SMIFTS. According to the requirement of remote sensor application, it must stay in vacuum environment for a long time. As a radiant standard, the stability of lamp-house in long time is the most important characteristic of on-board calibration system. By calculation and experimentation, analyses of on-board calibration of SMIFTS, and testing spaceflight environment characteristic of on-board calibration, the difficulty in the key parts of on-board calibration of SMIFTS such as lamp-house, spectrum filter and integrating sphere was solved. According to the radiation-time stability testing for lamp-house and optics, particle-radiation testing, environmental-mechanics testing and hot vacuum examination, good result was obtained. By whole-aperture and part-field comparative wavelength calibration, the spectrum curve and before-launch interferogram were obtained. After comparison with reconstruction spectrum under different condition, the stability and credibility of SMIFTS on-board calibration system was proved.
Number of references:16
Main heading:Calibration
Controlled terms:Bolometers - Fourier transforms - Houses - Optical systems - Remote sensing - Spacecraft instruments - Spectrometers - Spectrometry - Spheres - System stability - Vacuum
Uncontrolled terms:Diffuse reflection - Environment characteristic - Export data - Filter stability - In-vacuum - Integrating spheres - Interferograms - Key parts - Modulated imaging - On-board calibration - Radiation testing - Relative spectra - Remote sensors - Stability analysis - Time stability - Wavelength calibration
Classification code:961 Systems Science - 921.3 Mathematical Transformations - 941 Acoustical and Optical Measuring Instruments - 941.3 Optical Instruments - 941.4 Optical Variables Measurements - 942 Electric and Electronic Measuring Instruments - 943 Mechanical and Miscellaneous Measuring Instruments - 944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments - 944.7 Radiation Measuring Instruments - 902.2 Codes and Standards - 402.3 Residences - 631 Fluid Flow - 633 Vacuum Technology - 801 Chemistry - 655.1 Spacecraft, General - 731.4 System Stability - 741.3 Optical Devices and Systems - 731.1 Control Systems
DOI:10.3964/j.issn.1000-0593(2010)04-1013-05
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 286>
Accession number:20102513030998
Title:Methods for nonlinear optic path difference of reflecting rotating fourier transform spectrometer
Authors:Jing, Juan-Juan (1); Zhou, Jin-Song (3); Xiangli, Bin (3); Lü, Qun-Bo (3); Wei, Ru-Yi (1)
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) Graduate University, Chinese Academy of Sciences, Beijing 100049, China; (3) Academy of Opto-Electronics, Chinese Academy of Sciences, Beijing 100190, China
Corresponding author:Zhou, J.-S.(jszhou@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:30
Issue:6
Issue date:June 2010
Publication year:2010
Pages:1678-1682
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. The nonlinear problem of optical path difference (OPD) of rotating Fourier transform spectrometer universally exists, produced by the rotation of rotating mirror. The nonlinear OPD will lead to fictitious recovery spectrum, so it is necessary to compensate the nonlinear OPD. Three methods of correction for the nonlinear OPD were described and compared in this paper, namely NUFFT method, OPD replace method and interferograms fitting method. The result indicates that NUFFT was the best method for the compensation of nonlinear OPD, OPD replace method was better, its precision was almost the same as NUFFT method, and their relative error are superior to 0.13%, but the computation efficiency of OPD replace method is slower than NUFFT method, while the precision and computation efficiency of interferograms fitting method are not so satisfied, because the interferograms are rapid fluctuant especially around the zero optical path difference, so it is unsuitable for polynomial fitting, and because this method needs piecewise fitting, its computation efficiency is the slowest, thus the NUFFT method is the most suited method for the nonlinear OPD compensation of reflecting rotating Fourier transform spectrometer.
Number of references:15
Main heading:Fourier transforms
Controlled terms:Bolometers - Computational efficiency - Error compensation - Interferometry - Linearization - Mathematical transformations - Metal recovery - Mirrors - Rotation - Spacecraft instruments - Spectrometers - Spectrometry - Wavelet transforms
Uncontrolled terms:Computation efficiency - Fitting method - Fourier transform spectrometers - Interferograms - Nonlinear problems - Optical path difference - Optical path difference(OPD) - Piece-wise - Polynomial fittings - Relative errors - Rotating mirrors
Classification code:944.7 Radiation Measuring Instruments - 801 Chemistry - 921 Mathematics - 921.3 Mathematical Transformations - 931.1 Mechanics - 941.3 Optical Instruments - 941.4 Optical Variables Measurements - 741.3 Optical Devices and Systems - 723.1 Computer Programming - 721.1 Computer Theory, Includes Formal Logic, Automata Theory, Switching Theory, Programming Theory - 655.1 Spacecraft, General - 601.1 Mechanical Devices - 531 Metallurgy and Metallography - 731.1 Control Systems
DOI:10.3964/j.issn.1000-0593(2010)06-1678-05
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
<RECORD 287>
Accession number:20103013103997
Title:Digital synchronous system for ultra high-speed physical diagnostic equipments
Authors:Xue, Ying-Dong (1); Bai, Yong-Lin (1); Li, Yan (1)
Author affiliation:(1) 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:Xue, Y.-D.(kfxyd@opt.ac.cn)
Source title:2010 Symposium on Photonics and Optoelectronic, SOPO 2010 - Proceedings
Abbreviated source title:Symp. Photonics Optoelectron., SOPO - Proc.
Monograph title:2010 Symposium on Photonics and Optoelectronic, SOPO 2010 - Proceedings
Issue date:2010
Publication year:2010
Article number:5503997
Language:English
ISBN-13:9781424449644
Document type:Conference article (CA)
Conference name:International Symposium on Photonics and Optoelectronics, SOPO 2010
Conference date:June 19, 2010 - June 21, 2010
Conference location:Chengdu, China
Conference code:81219
Sponsor:IEEE Photonics Society; Sichuan University; Chongqing University; University of Electronic Science and Technology of China; Chinese Quantum Electronics and Optoelectronics Society (CQOES)
Publisher:IEEE Computer Society, 445 Hoes Lane - P.O .Box 1331, Piscataway, NJ 08855-1331, United States
Abstract:A design of the digital synchronous system which is based on FPGA is presented. To reduce the delay of the system logic and enhance the working frequency, the timing constraints have been analyzed. We investigate the influences of the delay of data output (T<inf>co</inf>), the delay of combinational logic circuits (T<inf>delay</inf>), the setup time (T <inf>setup</inf>) and the clock cycle (T) on the working frequency, and adopt the method of combinational logic splitting to reduce the LUT cascade connection. As a result, not only is stably running the system at 200 MHz clock realized, but also completely meets the experiment requirements. This system provides a reliable guarantee for controlling on ultra high-speed physical diagnostic system. ©2010 IEEE.
Number of references:10
Main heading:Delay circuits
Controlled terms:Logic circuits - Switching circuits - Timing circuits
Uncontrolled terms:Clock cycles - Combinational logic - Combinational logic circuits - Data output - Diagnostic equipment - Diagnostic systems - FPGA - LUT cascade - Multi-beam - Set-up time - Synchronous system - Timing constraints - Ultra high speed - Working frequency
Classification code:703.1 Electric Networks - 713.4 Pulse Circuits - 713.5 Electronic Circuits Other Than Amplifiers, Oscillators, Modulators, Limiters, Discriminators or Mixers - 721.2 Logic Elements - 721.3 Computer Circuits
DOI:10.1109/SOPO.2010.5503997
Database:Compendex
Compilation and indexing terms, Copyright 2014 Elsevier Inc.
实时咨询 
陕公网安备 61019002000960号 陕ICP备05007611