首页   |  中国科学院
当前位置: 首页>EI收录论文
2016年11月
作者: 来源 : 时间:2016-05-30 字体<    >

 

Accession number:20161902355975

Title:Detector for space thermalion imaging

Authors:Li, Lin-Sen (1, 2); Liu, Yong-An (1); Kong, Ling-Gao (3); Liu, Duo (1, 2); Qiang, Peng-Fei (1); Zhao, Bao-Sheng (1)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (2) Xi'an Jiaotong University, Xi'an; 710119, China; (3) National Space Science Center, Chinese Academy of Sciences, Beijing; 100190, China

Corresponding author:Liu, Yong-An(liuya@opt.ac.cn)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:45

Issue:4

Issue date:April 1, 2016

Publication year:2016

Article number:0423007

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:A kind of space thermal-ion imaging detector was investigated, which can be used in detecting a variety oftargetsource such as thermion, ultraviolet, X-rays etc. The output of the detector is a grayscale image of the target source, the detail information including the gradation level and gradation distribution of the image are obtained based on the intensity and thermal-ion uniformity of the target source. This paper conducted experiments to test the detector with target source of ultraviolet light. Performance parameters as follows have been detected; the resolution is better than 120 μm; the input-output linearity error is <±4% and the output uniformity is better than 97%. © 2016, Chinese Optical Society. All right reserved.

Number of references:15

Page count:5

Main heading:Photonics

Controlled terms:Optics

Uncontrolled terms:Gradation analysis - Imaging detector - Thermionic - Ultraviolet - Uniformity

Classification code:741.1 Light/Optics

DOI:10.3788/gzxb20164504.0423007

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20161502227914

Title:Fundamental-frequency-absorbed oxyfluoride glass in a high-power laser

Authors:Hou, Chaoqi (1); Li, Weinan (1); Pengfei, Wang (1); Lu, Min (1); Bo, Peng (1); Haitao, Guo (1); Fei, Gao (1); Xiaoxia, Cui (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, China

Corresponding author:Li, Weinan(liweinan@opt.ac.cn)

Source title:Applied Optics

Abbreviated source title:Appl. Opt.

Volume:55

Issue:10

Issue date:April 1, 2016

Publication year:2016

Pages:2649-2652

Language:English

ISSN:1559128X

E-ISSN:21553165

CODEN:APOPAI

Document type:Journal article (JA)

Publisher:OSA - The Optical Society

Abstract:A high-power third-harmonic laser faces challenges in the filtering remnant unconverted fundamental frequency, which is from the frequency converting crystal. In this work, a novel fundamental-frequency-absorbed oxyfluoride glass has been prepared, which provides a possible option to solve the problem. By being doped with Fe2 ion, the glass shows strong absorption property at 1053 nm, and the glass's transmittances at 351 and 1053 nm are stable with changing the laser power or increasing the irradiation times under high-power laser irradiation. Meanwhile, the laser-induced damage threshold of the glass is 12.5 J/cm2 at 351 nm, which is two times higher than that of fused silica whose threshold is 6.2 J/cm2 in the same testing condition. The glass also exhibits a higher laserinduced damage threshold as well as 36.6 J/cm2 at its absorption wavelength of 1053 nm. The results indicate that this glass is promising as a color-separation optic, thus allowing a novel design for the final optics assembly in an inertial confinement fusion laser system. © 2016 Optical Society of America.

Number of references:23

Main heading:Glass

Controlled terms:Fused silica - High power lasers - Irradiation - Laser damage - Natural frequencies

Uncontrolled terms:Absorption wavelengths - Color separation - Fundamental frequencies - Laser induced damage thresholds - Oxy-fluoride glass - Strong absorptions - Testing conditions - Third harmonic

Classification code:744.1 Lasers, General - 744.8 Laser Beam Interactions - 812.3 Glass

DOI:10.1364/AO.55.002649

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20161702294167

Title:Aging Face Recognition: A Hierarchical Learning Model Based on Local Patterns Selection

Authors:Li, Zhifeng (1); Gong, Dihong (1); Li, Xuelong (2); Tao, Dacheng (3)

Author affiliation:(1) Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China; (2) Center for OPTical IMagery Analysis and Learning (OPTIMAL), Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, China; (3) Centre for Quantum Computation and Intelligent Systems, Faculty of Engineering and Information Technology, University of Technology Sydney, 81 Broadway Street, Ultimo; NSW, Australia

Source title:IEEE Transactions on Image Processing

Abbreviated source title:IEEE Trans Image Process

Volume:25

Issue:5

Issue date:May 2016

Publication year:2016

Pages:2146-2154

Article number:7420684

Language:English

ISSN:10577149

CODEN:IIPRE4

Document type:Journal article (JA)

Publisher:Institute of Electrical and Electronics Engineers Inc.

Abstract:Aging face recognition refers to matching the same person's faces across different ages, e.g., matching a person's older face to his (or her) younger one, which has many important practical applications, such as finding missing children. The major challenge of this task is that facial appearance is subject to significant change during the aging process. In this paper, we propose to solve the problem with a hierarchical model based on two-level learning. At the first level, effective features are learned from low-level microstructures, based on our new feature descriptor called local pattern selection (LPS). The proposed LPS descriptor greedily selects low-level discriminant patterns in a way, such that intra-user dissimilarity is minimized. At the second level, higher level visual information is further refined based on the output from the first level. To evaluate the performance of our new method, we conduct extensive experiments on the MORPH data set (the largest face aging data set available in the public domain), which show a significant improvement in accuracy over the state-of-the-art methods. © 2015 IEEE.

Number of references:71

Main heading:Face recognition

Controlled terms:Hierarchical systems

Uncontrolled terms:Different ages - Facial appearance - Feature descriptors - Hierarchical learning - Hierarchical model - Missing children - State-of-the-art methods - Visual information

Classification code:961 Systems Science

DOI:10.1109/TIP.2016.2535284

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20161702281929

Title:Experimental demonstration of 3D Accelerating beam arrays

Authors:Yu, Xianghua (1); Li, Runze (1); Yan, Shaohui (1); Yao, Baoli (1); Gao, Peng (1); Han, Guoxia (1); Lei, Ming (1)

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

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

Source title:Applied Optics

Abbreviated source title:Appl. Opt.

Volume:55

Issue:11

Issue date:April 10, 2016

Publication year:2016

Pages:3090-3095

Language:English

ISSN:1559128X

E-ISSN:21553165

CODEN:APOPAI

Document type:Journal article (JA)

Publisher:OSA - The Optical Society

Abstract:Accelerating beams have attracted much attention in the frontiers of optical physics and technology owing to their unique propagation dynamics of nondiffracting, self-healing, and freely accelerating along curved trajectories. Such behaviors essentially arise from the particular phase factor occurring in their spatial frequency spectrum, e.g., the cubic phase associated to the spectrum of Airy beam. In this paper, we theoretically and experimentally demonstrate a sort of accelerating beam arrays, which are composed of spatially separated accelerating beams. By superimposing kinoforms of multifocal patterns into the spatial frequency spectrum of accelerating beams, different types of beam arrays, e.g., Airy beam arrays and two-main-lobe accelerating beam arrays, are generated and measured by scanning a reflection mirror near the focal region along the optical axis. The 3D intensity patterns reconstructed from the experimental data present good agreement with the theoretical counterparts. The combination of accelerating beams with optical beam arrays proposed here may find potential applications in various fields such as optical microscopes, optical micromachining, optical trapping, and so on. © 2016 Optical Society of America.

Number of references:31

Main heading:Spectroscopy

Controlled terms:Molecular physics - Optics

Uncontrolled terms:Experimental demonstrations - Intensity patterns - Optical microscopes - Optical physics - Opticaltrapping - Propagation dynamics - Reflection mirrors - Spatial frequency spectrums

Classification code:741.1 Light/Optics - 931.3 Atomic and Molecular Physics

DOI:10.1364/AO.55.003090

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20160701945500

Title:Wireless and sensorless 3D ultrasound imaging

Authors:Gao, Haitao (1, 2); Huang, Qinghua (1, 2); Xu, Xiangmin (1); Li, Xuelong (3)

Author affiliation:(1) School of Electronic and Information Engineering, South China University of Technology, Guangzhou, China; (2) Hubei Key Laboratory of Intelligent Vision Based Monitoring for Hydroelectric Engineering, China Three Gorges University, Yichang, China; (3) Center for OPTical IMagery Analysis and Learning (OPTIMAL), State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, Shaanxi, China

Corresponding author:Huang, Qinghua(qhhuang@scut.edu.cn)

Source title:Neurocomputing

Abbreviated source title:Neurocomputing

Volume:195

Issue date:June 26, 2016

Publication year:2016

Pages:159-171

Language:English

ISSN:09252312

E-ISSN:18728286

CODEN:NRCGEO

Document type:Journal article (JA)

Publisher:Elsevier

Abstract:The past decade has witnessed great advances in three-dimensional (3-D) medical ultrasound (US) imaging instrumentation. An increasing demand for portable 3-D US equipment is one of the main trends upcoming in the market. In this study, we developed a low cost, portable, sensorless and wireless 3-D US imaging system. A laptop US scanner with a conventional linear probe and a convex probe was used to acquire 2-D US B-scans. A client program was developed and run on the US scanner for capturing the pictures of screen during a freehand scanning without a positional sensor, and then the JPEG compression was applied to the pictures for reducing the image data size. The image data was sent to a remote workstation in real-time through Wi-Fi connection. A neural network model was used to recognize the characters (e.g. imaging depth and probe model information) displayed on the screen of the US scanner. The server on the remote workstation communicated with the US scanner, received raw image data, and finally reconstructed 3-D US images. The positions of the B-scans were obtained by estimating the spacings of B-scan image sequence, which was learned by measuring adaptive speckle decorrelation curves in mechanically collected B-scan frames. The performance of the proposed system has been demonstrated through experiments conducted on a US resolution phantom in vitro as well as human tissues in vivo. © 2016 Elsevier B.V.

Number of references:34

Main heading:Medical imaging

Controlled terms:Probes - Scanning - Speckle - Ultrasonic imaging - Wireless telecommunication systems

Uncontrolled terms:3-D ultrasound - 3D ultrasound imaging - Medical ultrasound - Neural network model - Speckle decorrelation - Threedimensional (3-d) - Volume reconstruction - Wireless communications

DOI:10.1016/j.neucom.2015.08.109

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20164903096158

Title:A novel method to real-time offset correction for frame transfer CCD

Authors:Chen, Zhi (1); Wen, Yan (1); Yao, Dalei (1); Jiang, Baotan (1)

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

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

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:9686

Monograph title:8th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optoelectronic Materials and Devices

Issue date:2016

Publication year:2016

Article number:96861L

Language:English

ISSN:0277786X

E-ISSN:1996756X

CODEN:PSISDG

ISBN-13:9781628419214

Document type:Conference article (CA)

Conference name:8th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optoelectronic Materials and Devices, AOMATT 2016

Conference date:April 26, 2016 - April 29, 2016

Conference location:Suzhou, China

Conference code:124821

Sponsor:Chinese Academy of Sciences, Institute of Optics and Electronics (IOE); The Chinese Optical Society (COS)

Publisher:SPIE

Abstract:The traditional CCD offset correction processing method is to obtain normal exposure image and dark field image respectively. In the later image processing, use normal exposure image minus the dark field image. Although traditional method can offset correction, but cannot to realize real-time offset correction. Because the traditional method is to obtain offset correction after acquire normal exposure image and dark field image, while the normal exposure image and dark field image is not acquired at the same time. This method would reduce the offset correction precision. A novel method to real-time offset correction for frame transfer CCD is proposed in this paper. The method is based on the improvement of the traditional frame transfer CCD driving timing and CCD signal processing sequence. The traditional frame transfer CCD driving timing is exposure, frame transfer and read CCD level shift register. An offset correction line is added before read CCD data storage area to acquire the offset variation of the each frame image. Take it as a normal image data. In CCD signal processing algorithm to offset calculation and correction. This novel method can correct the offset of each frame image each pixel data real time. In this way the effect on the images from the variation of the offset caused by factors such as the working temperature and the aging of electronic devices in CCD signal processing circuit of CCD camera is restrained. © 2016 SPIE.

Number of references:6

Main heading:Image processing

Controlled terms:CCD cameras - Charge coupled devices - Digital storage - Image acquisition - Manufacture - Materials testing - Optical data processing - Optoelectronic devices - Processing - Shift registers - Signal processing

Uncontrolled terms:Driving timing - Frame transfer CCD - Offset corrections - Processing method - Real time - Signal processing algorithms - Signal processing circuits - Working temperatures

Classification code:714.2 Semiconductor Devices and Integrated Circuits - 716.1 Information Theory and Signal Processing - 721.3 Computer Circuits - 722.1 Data Storage, Equipment and Techniques - 723 Computer Software, Data Handling and Applications - 723.2 Data Processing and Image Processing - 741.3 Optical Devices and Systems - 913.4 Manufacturing - 951 Materials Science

DOI:10.1117/12.2242264

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20161502223579

Title:Weakly Supervised Multilabel Clustering and its Applications in Computer Vision

Authors:Xia, Yingjie (1); Nie, Liqiang (2); Zhang, Luming (3); Yang, Yi (4); Hong, Richang (3); Li, Xuelong (5)

Author affiliation:(1) College of Computer Science, Zhejiang University, Hangzhou; 310027, China; (2) School of Computer Science and Technology, Shandong University, Jinan; 250100, China; (3) Department of Computer Science and Information Engineering, Hefei University of Technology, Hefei; 230009, China; (4) Centre for Quantum Computation and Intelligent Systems, University of Technology Sydney, Ultimo; NSW; 123, Australia; (5) Center for OPTical IMagery Analysis and Learning, State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China

Source title:IEEE Transactions on Cybernetics

Abbreviated source title:IEEE Trans. Cybern.

Volume:46

Issue:12

Issue date:December 2016

Publication year:2016

Pages:3220-3232

Article number:7426784

Language:English

ISSN:21682267

Document type:Journal article (JA)

Publisher:Institute of Electrical and Electronics Engineers Inc.

Abstract:Clustering is a useful statistical tool in computer vision and machine learning. It is generally accepted that introducing supervised information brings remarkable performance improvement to clustering. However, assigning accurate labels is expensive when the amount of training data is huge. Existing supervised clustering methods handle this problem by transferring the bag-level labels into the instance-level descriptors. However, the assumption that each bag has a single label limits the application scope seriously. In this paper, we propose weakly supervised multilabel clustering, which allows assigning multiple labels to a bag. Based on this, the instance-level descriptors can be clustered with the guidance of bag-level labels. The key technique is a weakly supervised random forest that infers the model parameters. Thereby, a deterministic annealing strategy is developed to optimize the nonconvex objective function. The proposed algorithm is efficient in both the training and the testing stages. We apply it to three popular computer vision tasks: 1) image clustering; 2) semantic image segmentation; and 3) multiple objects localization. Impressive performance on the state-of-the-art image data sets is achieved in our experiments. © 2016 IEEE.

Number of references:54

Main heading:Computer vision

Controlled terms:Artificial intelligence - Decision trees - Image segmentation - Learning systems - Semantics - Statistical mechanics

Uncontrolled terms:Deterministic annealing - ITS applications - Model parameters - Multiple objects - Non-convex objective functions - Semantic image segmentations - Statistical tools - Supervised clustering

DOI:10.1109/TCYB.2015.2501385

Funding Details: Number; Acronym; Sponsor: 61304188; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 61472113; NSFC; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20165003113860

Title:The estimation method on diffusion spot energy concentration of the detection system

Authors:Gao, Wei (1); Song, Zongxi (1); Liu, Feng (1); Dan, Lijun (1); Sun, Zhonghan (1); Du, Yunfei (1)

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

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

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:9684

Monograph title:8th International Symposium on Advanced Optical Manufacturing and Testing Technology: Optical Test, Measurement Technology, and Equipment

Issue date:2016

Publication year:2016

Article number:968421

Language:English

ISSN:0277786X

E-ISSN:1996756X

CODEN:PSISDG

ISBN-13:9781628419191

Document type:Conference article (CA)

Conference name:8th International Symposium on Advanced Optical Manufacturing and Testing Technology: Optical Test, Measurement Technology, and Equipment, AOMATT 2016

Conference date:April 26, 2016 - April 29, 2016

Conference location:Suzhou, China

Conference code:124817

Sponsor:Chinese Academy of Sciences, Institute of Optics and Electronics (IOE); The Chinese Optical Society (COS)

Publisher:SPIE

Abstract:We propose a method to estimate the diffusion spot energy of the detection system. We do outdoor observation experiments in Xinglong Observatory, by using a detection system which diffusion spot energy concentration is estimated (the correlation coefficient is approximate 0.9926).The aperture of system is 300mm and limiting magnitude of system is 14.15Mv. Observation experiments show that the highest detecting magnitude of estimated system is 13.96Mv, and the average detecting magnitude of estimated system is about 13.5Mv. The results indicate that this method can be used to evaluate the energy diffusion spot concentration level of detection system efficiently. © 2016 SPIE.

Number of references:10

Main heading:Diffusion

Controlled terms:Concentration (process) - Manufacture - Optical testing

Uncontrolled terms:Correlation coefficient - Detection system - Energy concentration - Energy diffusion - Estimate - Estimation methods - Nyquist frequency - Spot concentration

Classification code:537.1 Heat Treatment Processes - 741.3 Optical Devices and Systems

Numerical data indexing:Size 3.00e-01m

DOI:10.1117/12.2242811

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20165103139660

Title:Graphene-induced unique polarization tuning properties of excessively tilted fiber grating

Authors:Jiang, Biqiang (1, 2); Yin, Guolu (2); Zhou, Kaiming (2, 3); Wang, Changle (2); Gan, Xuetao (1); Zhao, Jianlin (1); Zhang, Lin (2)

Author affiliation:(1) Key Laboratory of Space Applied Physics and Chemistry, Ministry of Education, Shaanxi Key Laboratory of Optical Information Technology, School of Science, Northwestern Polytechnical University, Xi'an; 710072, China; (2) Aston Institute of Photonic Technologies, Aston University, Birmingham; B4 7ET, United Kingdom; (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:Zhang, Lin(l.zhang@aston.ac.uk)

Source title:Optics Letters

Abbreviated source title:Opt. Lett.

Volume:41

Issue:23

Issue date:December 1, 2016

Publication year:2016

Pages:5450-5453

Language:English

ISSN:01469592

E-ISSN:15394794

CODEN:OPLEDP

Document type:Journal article (JA)

Publisher:OSA - The Optical Society

Abstract:By exploiting the polarization-sensitive coupling effect of graphene with the optical mode, we investigate the polarization modulation properties of a hybrid waveguide of graphene-integrated excessively tilted fiber grating (Ex-TFG). The theoretical analysis and experimental results demonstrate that the real and imaginary parts of complex refractive index of fewlayer graphene exhibit different effects on transverse electric (TE) and transverse magnetic (TM) cladding modes of the Ex-TFG, enabling stronger absorption in the TE mode and more wavelength shift in the TM mode. Furthermore, the surrounding refractive index can modulate the complex optical constant of graphene and then the polarization properties of the hybrid waveguide, such as resonant wavelength and peak intensity. Therefore, the unique polarization tuning property induced by the integration of the graphene layer with Ex-TFG may endow potential applications in all-in-one fiber modulators, fiber lasers, and biochemical sensors. © 2016 Optical Society of America.

Number of references:20

Main heading:Optical fiber coupling

Controlled terms:Fiber lasers - Fibers - Graphene - Polarization - Refractive index - Tuning - Waveguides

Uncontrolled terms:Complex refractive index - Polarization modulation - Polarization properties - Polarization sensitive - Resonant wavelengths - Surrounding refractive indices (SRI) - Tilted fiber gratings - Transverse electrics

Classification code:714.3 Waveguides - 741.1 Light/Optics - 741.1.2 Fiber Optics - 744.4 Solid State Lasers - 761 Nanotechnology - 804 Chemical Products Generally

DOI:10.1364/OL.41.005450

Funding Details: Number; Acronym; Sponsor: 61505165; NSFC; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20164603013264

Title:Deep Learning for Hyperspectral Data Classification through Exponential Momentum Deep Convolution Neural Networks

Authors:Yue, Qi (1, 2, 3); Ma, Caiwen (1)

Author affiliation:(1) Xi'An Institute of Optics and Precision Mechanics, CAS, Xi'an; 710119, China; (2) University of Chinese Academy of Sciences, Beijing; 100039, China; (3) Xi'An University of Posts and Telecommunications, Xi'an; 710121, China

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

Source title:Journal of Sensors

Abbreviated source title:J. Sensors

Volume:2016

Issue date:2016

Publication year:2016

Article number:3150632

Language:English

ISSN:1687725X

E-ISSN:16877268

Document type:Journal article (JA)

Publisher:Hindawi Publishing Corporation, 410 Park Avenue, 15th Floor, 287 pmb, New York, NY 10022, United States

Abstract:Classification is a hot topic in hyperspectral remote sensing community. In the last decades, numerous efforts have been concentrated on the classification problem. Most of the existing studies and research efforts are following the conventional pattern recognition paradigm, which is based on complex handcrafted features. However, it is rarely known which features are important for the problem. In this paper, a new classification skeleton based on deep machine learning is proposed for hyperspectral data. The proposed classification framework, which is composed of exponential momentum deep convolution neural network and support vector machine (SVM), can hierarchically construct high-level spectral-spatial features in an automated way. Experimental results and quantitative validation on widely used datasets showcase the potential of the developed approach for accurate hyperspectral data classification. © 2016 Qi Yue and Caiwen Ma.

Number of references:34

Main heading:Classification (of information)

Controlled terms:Artificial intelligence - Complex networks - Convolution - Learning systems - Pattern recognition - Remote sensing - Support vector machines

Uncontrolled terms:Classification framework - Convolution neural network - Hyperspectral Data - Hyperspectral data classification - Hyperspectral remote sensing - Quantitative validation - Research efforts - Spatial features

Classification code:716.1 Information Theory and Signal Processing - 722 Computer Systems and Equipment - 723 Computer Software, Data Handling and Applications - 723.4 Artificial Intelligence

DOI:10.1155/2016/3150632

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20164703028100

Title:Preface

Authors:Tan, Tieniu (1); Li, Xuelong (2); Chen, Xilin (1); Zhou, Jie (3); Yang, Jian (4); Cheng, Hong (5)

Author affiliation:(1) Chinese Academy of Sciences, Institute of Automation, Beijing, China; (2) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, China; (3) Tsinghua University, Beijing, China; (4) Nanjing University of Science and Technology, Nanjing, China; (5) University of Electronic Science and Technology, Chengdu; Sichuan, China

Source title:Communications in Computer and Information Science

Abbreviated source title:Commun. Comput. Info. Sci.

Volume:663

Part number:2 of 2

Monograph title:Pattern Recognition - 7th Chinese Conference, CCPR 2016, Proceedings

Issue date:2016

Publication year:2016

Pages:V

Language:English

ISSN:18650929

ISBN-13:9789811030048

Document type:Journal article (JA)

Publisher:Springer Verlag

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20164603007789

Title:Trunk wormhole detection using bio-impedance spectroscopy measurements: A feasibility study

Authors:Wang, Wei (1); Zhang, Xiongxing (1); Wang, Kening (1); Yang, Yuxiang (2)

Author affiliation:(1) School of Optoelectronic Engineering, Xi’an Technological University, Xi’an, China; (2) Department of Precision Instrumentation Engineering, Xi’an University of Technology, Xi’an, China

Source title:International Journal of Simulation: Systems, Science and Technology

Abbreviated source title:Int. J. Simul. Syst. Sci. Technol.

Volume:17

Issue:27

Issue date:2016

Publication year:2016

Pages:23.1-23.6

Language:English

ISSN:14738031

E-ISSN:1473804X

Document type:Journal article (JA)

Publisher:UK Simulation Society, Clifton Lane, Nottingham, NG11 8NS, United Kingdom

Abstract:Stem-Boring Pest (SBP) cause the most prevalent problem that harms the health of trees. Traditional SBP prevention uses manual survey of wormholes and is a time-consuming process. This paper proposes a novel Trunk Wormhole Detection (TWD) method based on Bio-Impedance Spectroscopy (BIS) measurements. A horizontal and a vertical trunk wormhole phantoms are prepared, and comparative BIS measurements under the situations without and with holes are performed using a precision impedance analyzers WK6500B. Remarkable differences both on impedance amplitudes and phases have been found before and after the holes formed in the phantoms. The Cole model parameter analysis finds that the Cole parameter R∞ decreases by 43.82% in the horizontal phantom, and decreases by 63.13% in the vertical phantoms, which suggests that R∞ may be an efficient indicator to detect trunk wormholes. © 2016, UK Simulation Society. All rights reserved.

Number of references:18

Main heading:Spectroscopy

Controlled terms:Computer simulation

Uncontrolled terms:Bio-Impedance spectroscopies - Feasibility studies - Impedance analyzer - Model parameters - nocv1 - Trunk wormhole - Wormhole detections

Classification code:723.5 Computer Applications

Numerical data indexing:Percentage 4.38e+01%, Percentage 6.31e+01%

DOI:10.5013/IJSSST.a.17.27.23

Funding Details: Number; Acronym; Sponsor: 61273271; NSFC; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20164202915403

Title:Pressure sensor based on the Sagnac effect and fiber loop ringdown spectroscopy

Authors:Yang, Songlin (1, 2); Ruan, Chi (1); Wang, Yuntao (1)

Author affiliation:(1) Xian Institute of Optics, State Key Laboratory of Transient Optics and Photonic, No. 17 Xinxi Road, Xian; 710119, China; (2) University of Chinese Academy of Sciences, 19 A Yuquan Road, Beijing; 100049, China

Corresponding author:Ruan, Chi(ruanchi@opt.ac.cn)

Source title:Optical Engineering

Abbreviated source title:Opt Eng

Volume:55

Issue:10

Issue date:October 1, 2016

Publication year:2016

Article number:107101

Language:English

ISSN:00913286

E-ISSN:15602303

CODEN:OPEGAR

Document type:Journal article (JA)

Publisher:SPIE

Abstract:A fiber-optic sensing scheme of measuring pressure is described here. The high reflective mirror in a laser cavity is replaced by a Sagnac loop in this scheme. The method combining the Sagnac effect with fiber loop ringdown technology fully embodies the advantages of both. The working principle is discussed in detail, and the whole sensing performance is demonstrated by applying sensing force to the sensor area. The sensing force can be obtained by measuring the ringdown time. The pressure measurement range of this device is 40 to 350 N. The detection sensitivity 0.4 ns/N can be realized in this system. The experimental curve reveals a close relationship between the sensing strain and the ringdown time. © 2016 Society of Photo-Optical Instrumentation Engineers (SPIE).

Number of references:21

Main heading:Pressure effects

Controlled terms:Fiber optic sensors - Fibers - Laser mirrors - Pressure sensors

Uncontrolled terms:Detection sensitivity - Experimental curves - Fiber loop ringdown - Fiber pressure sensor - Fiber-optic sensing - High-reflective mirrors - Sagnac effect - Sensing performance

Classification code:741.1.2 Fiber Optics - 741.3 Optical Devices and Systems - 931.1 Mechanics - 944.3 Pressure Measuring Instruments

Numerical data indexing:Force 4.00e+01N to 3.50e+02N

DOI:10.1117/1.OE.55.10.107101

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20164402970351

Title:Improvement of CO2capture performance of calcium-based absorbent modified with palygorskite

Authors:Shan, Liyuan (1); Li, Hui (1, 2); Meng, Binglu (3); Yu, Youhai (3); Min, Yonggang (1, 2)

Author affiliation:(1) College of Material and Mineral Resource, Xi'an University of Architecture and Technology, Xi'an; 710055, China; (2) Shaanxi Techno-Institute of Recycling Economy, Xi'an; 710055, China; (3) Xi'an Institute of Optics and Precision Mechanics of Chinese Academy of Science, Xi'an; 710119, China

Corresponding author:Yu, Youhai(youhai.yu@gmail.com)

Source title:Chinese Journal of Chemical Engineering

Abbreviated source title:Chin J Chem Eng

Volume:24

Issue:9

Issue date:September 1, 2016

Publication year:2016

Pages:1283-1289

Language:English

ISSN:10049541

CODEN:CJCEEB

Document type:Journal article (JA)

Publisher:Chemical Industry Press

Abstract:Limestone can be used for CO2capture and sequestration (CCS) in flue gas effectively. However, its CCS capability will dramatically decline after several cycles due to the surface “sintering”. In this work, the limestone was modified with palygorskite to reduce sintering phenomenon between the absorbent particles during the CCS process and the carbonation rate of the limestone can be enhanced effectively. Palygorskite is a natural mineral with nano-fibrous structure which can reduce the mutual contact of limestone particles during the CCS process. The results were detected by TGA, SEM, MIP, FTIR and particle size analyzer respectively. The best CO2capture performance of modified absorbent was 13.11% improvement with only 5 wt% palygorskite added during the CCS process after 15 cycles compared with natural absorbent. It was found that excellent microscopic structures of absorbent modified with palygorskite was created, and the surface sintering was postponed leading to CO2capture performance enhanced under the same conditions. © 2016 Elsevier B.V.

Number of references:34

Main heading:Carbon dioxide

Controlled terms:Absorption - Carbon capture - Limestone - Particle size - Particle size analysis - Sintering

Uncontrolled terms:Limestone particles - Microscopic structures - Nano-fibrous - Natural absorbents - Natural minerals - Palygorskites - Particle size analyzers - Sintering phenomenon

Classification code:454 Environmental Engineering - 802.3 Chemical Operations - 804.2 Inorganic Compounds - 951 Materials Science

Numerical data indexing:Percentage 1.31e+01%

DOI:10.1016/j.cjche.2016.05.021

Funding Details: Number; Acronym; Sponsor: 51274159; NSFC; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20164202908369

Title:Plasmonic Black Absorbers for Enhanced Photocurrent of Visible-Light Photocatalysis

Authors:Tan, Furui (1, 2); Wang, Ning (1, 2); Lei, Dang Yuan (1, 2); Yu, Weixing (3); Zhang, Xuming (1, 2)

Author affiliation:(1) The Hong Kong Polytechnic University Shenzhen Research Institute 518057 Shenzhen P. R. China; (2) Department of Applied Physics The Hong Kong Polytechnic University Hong Kong S.A.R. P. R. China; (3) Key Laboratory of Spectral Imaging Technology Xi'an Institute of Optics and Precision Mechanics Chinese Academy of Sciences 710119 Xi'an P. R. China

Corresponding author:Zhang, Xuming(apzhang@polyu.edu.hk)

Source title:Advanced Optical Materials

Abbreviated source title:Adv. Opt. Mater.

Issue date:2016

Publication year:2016

Language:English

E-ISSN:21951071

Document type:Article in Press

Publisher:Wiley-VCH Verlag

Abstract:Plasmonic resonance of noble metal nanoparticles can drastically enhance the visible response of wide-bandgap photocatalysts such as TiO2, but the current technology has two fundamental problems: narrow absorption band and low absorption, which limit the energy efficiency of photocatalysis using sunlight. Here, an original plasmonic black absorber is reported, which sandwiches a 150 nm TiO2layer between a layer of random Au nanoparticles and a rough Au surface (200 nm thick). The combined plasmonic effect of the Au nanoparticles and the Au rough surface enables a strong absorption (72%-91%) over 400-900 nm and a significantly (20-fold) enhanced photocurrent as compared to the bare TiO2film. The strong absorption to visible and near infrared light, and the much enhanced photocurrent make the black absorber an ideal material for solar applications such as photocatalytic, photosynthetic, photovoltaic, and photothermal systems. © 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Main heading:Gold

Controlled terms:Catalysis - Energy efficiency - Infrared devices - Light - Metal nanoparticles - Nanoparticles - Photocatalysis - Photocurrents - Plasmons - Precious metals - Solar absorbers - Solar energy - Solar power generation - Titanium dioxide

Uncontrolled terms:Black absorbers - Perfect absorber - Photo-thermal systems - Plasmonic resonances - Plasmonics - Solar applications - Visible and near infrared - Visible-light photocatalysis

Classification code:525.2 Energy Conservation - 547.1 Precious Metals - 615.2 Solar Power - 657.1 Solar Energy and Phenomena - 741.1 Light/Optics - 761 Nanotechnology - 802.2 Chemical Reactions - 804.2 Inorganic Compounds - 931.3 Atomic and Molecular Physics

Numerical data indexing:Percentage 7.20e+01% to 9.10e+01%, Size 1.50e-07m, Size 2.00e-07m, Size 4.00e-07m to 9.00e-07m

DOI:10.1002/adom.201600399

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20164302931451

Title:Threshold characteristics analysis of dual-end-pumped Nd3+-doped gain-guided and index-antiguided fiber lasers

Authors:Shen, Xiao (1, 2); Wei, Wei (1)

Author affiliation:(1) College of Optoelectronic Engineering, Nanjing University of Posts and Telecommunications, Nanjing; 210023, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, Shanxi; 710119, China

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

Source title:MATEC Web of Conferences

Abbreviated source title:MATEC Web Conf.

Volume:61

Monograph title:International Seminar on Applied Physics, Optoelectronics and Photonics, APOP 2016

Issue date:June 28, 2016

Publication year:2016

Article number:06011

Language:English

E-ISSN:2261236X

Document type:Conference article (CA)

Conference name:International Seminar on Applied Physics, Optoelectronics and Photonics, APOP 2016

Conference date:May 28, 2016 - May 29, 2016

Conference location:Shanghai, China

Conference code:123844

Publisher:EDP Sciences

Abstract:An analytical model for dual-end-pumped Nd3+-doped gain-guided and index-antiguided (GG-IAG) fiber laser is established. The corresponding analytical expression of the threshold pump power is obtained by solving the improved rate equations. Pump light propagation and threshold characteristics are both researched. Simulation results show that there are optimum values of N, a and L for the lowest Pth. When a=50μm, L=9cm, N=1.8∗1020cm-3, R1s=1, R2s=0.75, the lowest threshold pump power Pthof the GG-IAG fiber laser is about 11.95W, the results of the work may be helpful for the later experiments. © 2016 The Authors, published by EDP Sciences.

Number of references:12

Main heading:Pumping (laser)

Controlled terms:Fiber lasers

Uncontrolled terms:Analytical expressions - End-pumped - Gain guided - Index antiguided - Optimum value - Rate equations - Threshold characteristics - Threshold pump power

Classification code:744.1 Lasers, General - 744.4 Solid State Lasers

Numerical data indexing:Power 1.19e+01W

DOI:10.1051/matecconf/20166106011

Funding Details: Number; Acronym; Sponsor: SKLST201405; CAS; Chinese Academy of Sciences

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20164102882735

Title:Bandwidth-tunable dissipative soliton and noise-like pulse in a normal dispersion fiber laser with a dual-scale saturable absorber

Authors:Cui, Yudong (1, 2, 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) State Key Laboratory of Modern Optical Instrumentation, Department of Optical Engineering, Zhejiang University, Hangzhou; 310027, China; (3) University of Chinese Academy of Sciences, Beijing; 100039, China

Corresponding author:Cui, Yudong(cuiyudong@opt.cn)

Source title:Journal of Optics (United Kingdom)

Abbreviated source title:J. Opt.

Volume:18

Issue:10

Issue date:October 2016

Publication year:2016

Article number:105503

Language:English

ISSN:20408978

E-ISSN:20408986

Document type:Journal article (JA)

Publisher:Institute of Physics Publishing

Abstract:A bandwidth-tunable dissipative soliton (DS) and noise-like pulse are demonstrated in an all-fiber normal dispersion fiber laser by employing a novel spectral filtering scheme. The mode locker is fabricated with a mixture composite that combines the merits of graphene and carbon nanotubes. At a pump power of 39 mW, a DS with knife edges is generated at 1565 nm. One of the steep edges is induced by gain spectral filtering and another is cut by a chirped fiber Bragg grating (CFBG). With higher pump power, the noise-like pulse operation displays an asymmetric spectral profile, confirming the novel combined spectral filtering. When the CFBG is stretched mechanically, the bandwidth of the DS and noise-like pulse can be tuned. The bandwidth-tunable mode-locked fiber laser has numerous potential applications, such as pulse shaping, as an amplifier and in optical nonlinear investigations. © 2016 IOP Publishing Ltd.

Number of references:56

Main heading:Fiber amplifiers

Controlled terms:Bandwidth - Carbon - Carbon nanotubes - Fiber Bragg gratings - Fiber lasers - Fibers - Laser mode locking - Locks (fasteners) - Mode-locked fiber lasers - Nanotubes - Optical pumping - Pulse shaping - Saturable absorbers - Solitons - Yarn

Uncontrolled terms:Chirped fiber Bragg grating - Dissipative solitons - grapheme - Normal dispersion - Optical nonlinear - Optical soliton - Spectral filtering - Spectral profile

Classification code:713.4 Pulse Circuits - 716.1 Information Theory and Signal Processing - 744.1 Lasers, General - 744.4 Solid State Lasers - 761 Nanotechnology - 804 Chemical Products Generally - 819.4 Fiber Products

Numerical data indexing:Power 3.90e-02W, Size 1.57e-06m

DOI:10.1088/2040-8978/18/10/105503

Funding Details: Number; Acronym; Sponsor: 61525505; NSFC; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20160601897838

Title:Demonstration of flexible optical time-division multiplexing system for high-speed free-space optical communications

Authors:Hu, Hui (1, 2, 3); Qian, Fengchen (1, 2); Xie, Xiaoping (1); Duan, Tao (1); Feng, Huan (1, 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, China; (2) Graduate University of Chinese Academy of Sciences, Beijing, China; (3) The School of Science, Xi’an Jiaotong University, Xi’an, China

Corresponding author:Duan, Tao(duantao@opt.ac.cn)

Source title:Journal of Optics (India)

Abbreviated source title:J. Opt.

Volume:45

Issue:1

Issue date:March 1, 2016

Publication year:2016

Language:English

ISSN:09728821

E-ISSN:09746900

CODEN:JOPTBQ

Document type:Journal article (JA)

Publisher:Optical Society of India

Abstract:A high-speed free-space optical communication scheme based on optical time-division multiplexing (OTDM) is experimentally demonstrated. By multiplexing eight 2.5Gb/s base-rate signals, which is generated from a repetition-tunable actively mode-locked fiber ring laser modulated by pseudo-random binary sequence data stream, a 20Gb/s OTDM packet is obtained. After 50 m high-speed FSO system transmission, the 20Gb/s OTDM packet is injected into a highly nonlinear fiber (HNLF) loop to realize polarization-insensitive de-multiplexing based on four-wave mixing (FWM). Experimental results show that the OTDM de-multiplexer bit error rate (BER) can achieve 10−9level with steady operation over 24 h, proving the practicality of this system. © 2016, The Optical Society of India.

Number of references:14

Main heading:Optical communication

Controlled terms:Binary sequences - Bit error rate - Demultiplexing - Error analysis - Four wave mixing - Locks (fasteners) - Mode-locked fiber lasers - Multiplexing - Multiplexing equipment - Nonlinear optics - Optical fiber communication - Ring lasers - Time division multiplexing

Uncontrolled terms:Fiber-ring lasers - Free Space Optical communication - Highly nonlinear fiber(HNLF) - Mode-locked - Optical time division multiplexing - Optical time division multiplexing systems - Polarization-insensitive - Pseudo-random binary sequences

Numerical data indexing:Bit_Rate 2.00e+10bit/s, Bit_Rate 2.50e+09bit/s

DOI:10.1007/s12596-016-0318-5

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20154301432902

Title:Effect of energy density and feeding speed on micro-holes drilling in SiC/SiC composites by picosecond laser

Authors:Liu, Yongsheng (1); Wang, Jing (1); Li, Weinan (2); Wang, Chunhui (1); Zhang, Qing (1); Yang, Xiaojun (2); Cheng, Laifei (1)

Author affiliation:(1) Science and Technology on Thermostructure Composite Materials Laboratory, Northwestern Polytechnical University, Xi’an; Shaanxi; 710072, 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; 710068, China

Corresponding author:Liu, Yongsheng(yongshengliu@nwpu.edu.cn)

Source title:International Journal of Advanced Manufacturing Technology

Abbreviated source title:Int J Adv Manuf Technol

Volume:84

Issue:9-12

Issue date:June 1, 2016

Publication year:2016

Pages:1917-1925

Language:English

ISSN:02683768

E-ISSN:14333015

CODEN:IJATEA

Document type:Journal article (JA)

Publisher:Springer-Verlag London Ltd

Abstract:Picosecond laser machining is an important modern technology for materials with high hardness. In this paper, micro-holes with several hundred micrometer diameter were drilled in SiC/SiC composite using picosecond laser, and the quality of the micro-holes under different machining parameters was investigated in detail. The results indicated that energy density and feeding speed had remarkable effect on the micro-hole quality. The roundness of the micro-holes on the laser entry side was rarely affected by energy density and feeding speed. However, the roundness of the micro-holes on the laser exit side and micro-hole diameters along processing direction were quite sensitive to the energy density and feeding speed. Feeding speed had little influence on the quality of drilling holes, except for more debris on the entry side with 11.2 μm/s feeding speed. © 2015, Springer-Verlag London.

Number of references:24

Main heading:Feeding

Controlled terms:Silicon carbide - Speed

Uncontrolled terms:Drilling holes - Energy density - Feeding speed - High hardness - Machining parameters - Modern technologies - Picosecond laser - SiC/SiC composites

Numerical data indexing:Velocity 1.12e-05m/s

DOI:10.1007/s00170-015-7844-1

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20162502515417

Title:Numerical calculation of 3.8 μm and 1.55 μm laser radiation transmission characteristic under foggy condition

Authors:Zhang, Zeyu (1, 2); Xie, Xiaoping (1); Duan, Tao (1); Wen, Yu (3); Wang, 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) University of Chinese Academy of Sciences, Beijing; 100049, China; (3) Xi'an Communication College, Xi'an; 710106, China

Corresponding author:Xie, Xiaoping(xxp@opt.ac.cn)

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

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

Volume:45

Issue date:May 25, 2016

Publication year:2016

Article number:S104007

Language:Chinese

ISSN:10072276

Document type:Journal article (JA)

Publisher:Chinese Society of Astronautics

Abstract:Fog is an inevitable weather factor affecting the performance of free space optical communication. Selecting the appropriate laser wavelength can effectively reduce the influence. Three atmospheric visibility of mist, fog, haze were considered in this paper. The transmission characteristic of mid-wave IR wavelength at 3.8 μm was compared with the traditional near-infrared wavelength at 1.55 μm that both belong to atmospheric transmission windows. Using Monte Carlo method, the propagation of a large number of photons along the horizontal direction was numerically simulated. Relationship between the relative light intensity and different receiving surface radius, photon transmittance under different transmission distance and different atmospheric visibility were worked out. The result reveals that the mid- wave IR wavelength at 3.8 μm, the light intensity is more concentrated under the same radius of receiving surface, and photon transmission is higher under the same propagation distance and less affected by atmospheric visibility. The wavelength at 3.8 μm is more suitable for horizontal link of free space optical communication in the fog than 1.55 μm. © 2016, Editorial Board of Journal of Infrared and Laser Engineering. All right reserved.

Number of references:15

Page count:6

Main heading:Optical communication

Controlled terms:Fog - Infrared devices - Light - Monte Carlo methods - Photons - Visibility

Uncontrolled terms:Atmospheric scattering - Atmospheric transmissions - Free Space Optical communication - Mid-wave IR - Near-infrared wavelength - Russian roulette - Transmission characteristics - Transmission distances

Classification code:443.1 Atmospheric Properties - 717.1 Optical Communication Systems - 741.1 Light/Optics - 741.2 Vision - 922.2 Mathematical Statistics - 931.3 Atomic and Molecular Physics

Numerical data indexing:Size 1.55e-06m, Size 3.80e-06m

DOI:10.3788/IRLA201645.S104007

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20162502514521

Title:High-Quality Hollow Closed-Pore Silica Antireflection Coatings Based on Styrene-Acrylate Emulsion @ Organic-Inorganic Silica Precursor

Authors:Guo, Zhaolong (1, 2); Zhao, Haixin (1); Zhao, Wei (1); Wang, Tao (1); Kong, Depeng (1); Chen, Taojing (1); Zhang, Xiaoyan (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) University of Chinese Academy of Sciences, Beijing; 100049, China

Corresponding author:Guo, Zhaolong(gzlxjtu@opt.ac.cn)

Source title:ACS Applied Materials and Interfaces

Abbreviated source title:ACS Appl. Mater. Interfaces

Volume:8

Issue:18

Issue date:May 11, 2016

Publication year:2016

Pages:11796-11805

Language:English

ISSN:19448244

E-ISSN:19448252

Document type:Journal article (JA)

Publisher:American Chemical Society

Abstract:Making use of a facile and low-cost way for the preparation of a hierarchically organized novel hollow closed-pore silica antireflective coating (CHAR) with tailored optical properties and a mechanical reliability is of great interest in the field of solar photovoltaic technology. The process mainly contains two aspects: (1) a styrene-acrylate emulsion @ organic-inorganic silica precursor (SA@OISP) core/shell hierarchical nanostructure, consisting of a sacrificial styrene-acrylate (SA) primary template, was fabricated using a sol-gel method; (2) the self-assembly of the nanostructures leads to SA@OISP nanospheres forming the high-quality hollow closed-pore silica antireflection coating (CHAR) by a dip-coating process and a subsequent calcination treatment. The resulting SA@OISP nanospheres have a mean diameter of 65.2 nm and contained a SA soft core with a mean diameter of approximately 54.8 nm and an organic-inorganic silica precursor (OISP) shell with a thickness of approximately 6-10 nm. Furthermore, the prepared CHAR film exhibited a high transmittance and good ruggedness. An average transmittance (TAV) of 97.64% was obtained, and the value is close to the ideal single-layered antireflection coating (98.09%) over a broad range of wavelengths (from 380 to 1100 nm). The CHAR film showed a stable TAV, with attenuation values of less than 0.8% and 0.43% after the abrasion test and the damp heat test, respectively. The conversion efficiency of the CHAR coating cover solar modules tends to be increased by 3.75%. The promising results obtained in this study suggest that the CHAR film was considered as an essential component of the solar module and were expected to provide additional solar energy harvest under extreme outdoor climates. © 2016 American Chemical Society.

Number of references:49

Main heading:Antireflection coatings

Controlled terms:Coatings - Emulsification - Film preparation - Inorganic coatings - Nanospheres - Nanostructures - Optical properties - Porous materials - Self assembly - Silica - Sol-gel process - Sol-gels - Solar cell arrays - Solar energy - Solar power generation - Styrene

Uncontrolled terms:Anti reflective coatings - Calcination treatment - Closed pore - Hierarchical Nanostructures - Mechanical reliability - Solar module - Solar photovoltaic technology - Styrene-acrylate emulsions

Classification code:615.2 Solar Power - 657.1 Solar Energy and Phenomena - 702.3 Solar Cells - 741.1 Light/Optics - 761 Nanotechnology - 802.3 Chemical Operations - 804 Chemical Products Generally - 804.1 Organic Compounds - 812.3 Glass - 813.2 Coating Materials - 933 Solid State Physics - 951 Materials Science

Numerical data indexing:Size 3.80e-07m to 1.10e-06m, Size 5.48e-08m, Size 6.00e-09m to 1.00e-08m, Size 6.52e-08m

DOI:10.1021/acsami.6b02192

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20162002384064

Title:Optimization of the electron collection efficiency of a large area MCP-PMT for the JUNO experiment

Authors:Chen, Lin (1, 2, 5); Tian, Jinshou (2); Liu, Chunliang (5); Wang, Yifang (3); Zhao, Tianchi (3); Liu, Hulin (2); Wei, Yonglin (2); Sai, Xiaofeng (2); Chen, Ping (1, 2); Wang, Xing (2); Lu, Yu (2); Hui, Dandan (1, 2); Guo, Lehui (1, 2); Liu, Shulin (3); Qian, Sen (3); Xia, Jingkai (3); Yan, Baojun (3); Zhu, Na (3); Sun, Jianning (4); Si, Shuguang (4); Li, Dong (4); Wang, Xingchao (4); Huang, Guorui (4); Qi, Ming (6)

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) Graduate School, Chinese Academy of Sciences (CAS), Beijing; 100049, China; (3) Institute of High Energy Physics (IHEP), CAS, Beijing; 100049, China; (4) North Night Vision Technology (NNVT) CO., LTD, Nanjing; 210110, China; (5) Xi'an Jiaotong University, Xi'an; 710049, China; (6) Nanjing University, Nanjing; 210093, China

Corresponding author:Chen, Lin(chenlin@opt.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:827

Issue date:August 11, 2016

Publication year:2016

Pages:124-130

Language:English

ISSN:01689002

CODEN:NIMAER

Document type:Journal article (JA)

Publisher:Elsevier

Abstract:A novel large-area (20-inch) photomultiplier tube based on microchannel plate (MCP-PMTs) is proposed for the Jiangmen Underground Neutrino Observatory (JUNO) experiment. Its photoelectron collection efficiency Ceis limited by the MCP open area fraction (Aopen). This efficiency is studied as a function of the angular (θ), energy (E) distributions of electrons in the input charge cloud and the potential difference (U) between the PMT photocathode and the MCP input surface, considering secondary electron emission from the MCP input electrode. In CST Studio Suite, Finite Integral Technique and Monte Carlo method are combined to investigate the dependence of Ceon θ, E and U. Results predict that Cecan exceed Aopen, and are applied to optimize the structure and operational parameters of the 20-inch MCP-PMT prototype. Ceof the optimized MCP-PMT is expected to reach 81.2%. Finally, the reduction of the penetration depth of the MCP input electrode layer and the deposition of a high secondary electron yield material on the MCP are proposed to further optimize Ce. © 2016 Elsevier B.V. All rights reserved.

Number of references:25

Main heading:Image storage tubes

Controlled terms:Electrodes - Electron emission - Electrons - Microchannels - Monte Carlo methods - Photomultipliers - Plates (structural components) - Secondary emission

Uncontrolled terms:Collection efficiency - Finite integral techniques - Micro channel plate - Operational parameters - Photo multiplier tube - Photoelectron collection efficiency - Secondary electron emissions - Secondary electron yield

Classification code:408.2 Structural Members and Shapes - 714.1 Electron Tubes - 922.2 Mathematical Statistics

Numerical data indexing:Size 5.08e-01m

DOI:10.1016/j.nima.2016.04.100

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20162402499605

Title:Scattering effects and high-spatial-frequency nanostructures on ultrafast laser irradiated surfaces of zirconium metallic alloys with nanoscaled topographies

Authors:Li, Chen (1, 2, 3); Cheng, Guanghua (1); Sedao, Xxx (2); Zhang, Wei (4); Zhang, Hao (2); Faure, Nicolas (2); Jamon, Damien (2); Colombier, Jean-Philippe (2); Stoian, Razvan (2)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, CAS, Xi'an; Shaanxi; 710119, China; (2) Laboratoire Hubert Curien, UMR 5516 CNRS, Université de Lyon, Université Jean Monnet, Saint Etienne; 42000, France; (3) University of Chinese Academy of Science, Beijing; 10049, China; (4) National Key Laboratory of Science and Technology on Power Beam Processes, Beijing Aeronautical Manufacturing Technology Research Institute, Beijing; 100024, China

Source title:Optics Express

Abbreviated source title:Opt. Express

Volume:24

Issue:11

Issue date:May 30, 2016

Publication year:2016

Pages:11558-11568

Language:English

E-ISSN:10944087

Document type:Journal article (JA)

Publisher:OSA - The Optical Society

Abstract:The origin of high-spatial-frequency laser-induced periodic surface structures (HSFL) driven by incident ultrafast laser fields, with their ability to achieve structure resolutions below λ/2, is often obscured by the overlap with regular ripples patterns at quasi-wavelength periodicities. We experimentally demonstrate here employing defined surface topographies that these structures are intrinsically related to surface roughness in the nano-scale domain. Using Zr-based bulk metallic glass (Zr-BMG) and its crystalline alloy (Zr-CA) counterpart formed by thermal annealing from its glassy precursor, we prepared surfaces showing either smooth appearances on thermoplastic BMG or high-density nano-protuberances from randomly distributed embedded nano-crystallites with average sizes below 200 nm on the recrystallized alloy. Upon ultrashort pulse irradiation employing linearly polarized 50 fs, 800 nm laser pulses, the surfaces show a range of nanoscale organized features. The change of topology was then followed under multiple pulse irradiation at fluences around and below the single pulse threshold. While the former material (Zr-BMG) shows a specific high quality arrangement of standard ripples around the laser wavelength, the latter (Zr-CA) demonstrates strong predisposition to form high spatial frequency rippled structures (HSFL). We discuss electromagnetic scenarios assisting their formation based on near-field interaction between particles and field-enhancement leading to structure linear growth. Finite-differencetime-domain simulations outline individual and collective effects of nanoparticles on electromagnetic energy modulation and the feedback processes in the formation of HSFL structures with correlation to regular ripples (LSFL). ©2016 Optical Society of America.

Number of references:19

Main heading:Ultrashort pulses

Controlled terms:Electromagnetic waves - Glass - Irradiation - Laser pulses - Metallic glass - Nanotechnology - Surface roughness - Ultrafast lasers

Uncontrolled terms:Finite difference time domains - High spatial frequency - Laser-induced periodic surface structures - Linearly polarized - Multiple-pulse irradiation - Near field interactions - Randomly distributed - Zr based bulk metallic glass

Classification code:531 Metallurgy and Metallography - 711 Electromagnetic Waves - 744.1 Lasers, General - 761 Nanotechnology - 812.3 Glass - 931.2 Physical Properties of Gases, Liquids and Solids

Numerical data indexing:Size 2.00e-07m, Size 8.00e-07m, Time 5.00e-14s

DOI:10.1364/OE.24.011558

Funding Details: Acronym; Sponsor: CSC; China Scholarship Council - Number; Acronym; Sponsor: 61223007; NSFC; China Scholarship Council - Number; Acronym; Sponsor: 61378019; NSFC; China Scholarship Council

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20161802335929

Title:Identification of high explosive RDX using terahertz imaging and spectral fingerprints

Authors:Liu, Jia (1, 2); Fan, Wen-Hui (1); Chen, Xu (1, 2); Xie, Jun (1, 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, China; (2) Graduate University of Chinese Academy of Sciences, Beijing, China

Source title:Journal of Physics: Conference Series

Abbreviated source title:J. Phys. Conf. Ser.

Volume:680

Issue:1

Monograph title:5th International Conference on Advances in Optoelectronics and Micro/Nano-Optics, AOM 2015

Issue date:February 3, 2016

Publication year:2016

Article number:012030

Language:English

ISSN:17426588

E-ISSN:17426596

Document type:Conference article (CA)

Conference name:5th International Conference on Advances in Optoelectronics and Micro/Nano-Optics, AOM 2015

Conference date:October 28, 2015 - October 31, 2015

Conference location:Hangzhou, China

Conference code:119906

Publisher:Institute of Physics Publishing

Abstract:We experimentally investigated the spectral fingerprints of high explosive cyclo-1,3,5- trimethylene-2,4,6-trinitramine (RDX) in terahertz frequency region. A home-made terahertz time-domain spectroscopy ranging from 0.2 THz-; 3.4 THz was deployed. Furthermore, two sample pellets (RDX pellet and polyethylene pellet), which were concealed in an opaque envelop, could be identified by using terahertz pulse imaging system. For the purpose of distinguishing the RDX between two pellets, we further calculated the THz frequency -domain map using its spectral fingerprints. It is demonstrated that the high explosive RDX could similarly be identified using terahertz frequency-domain imaging.

Number of references:27

Main heading:Terahertz spectroscopy

Controlled terms:Explosives - Frequency domain analysis - Optoelectronic devices - Pelletizing - Polyethylenes - Terahertz waves

Uncontrolled terms:High explosives - Polyethylene pellets - Spectral fingerprints - Terahertz frequencies - Terahertz imaging - Terahertz pulse - Terahertz time domain spectroscopy - THz frequencies

Classification code:711 Electromagnetic Waves - 741.3 Optical Devices and Systems - 815.1.1 Organic Polymers - 921.3 Mathematical Transformations - 931.1 Mechanics

Numerical data indexing:Frequency 3.40e+12Hz

DOI:10.1088/1742-6596/680/1/012030

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20163102671131

Title:ZnSe-material phase mask applied to athermalization of infrared imaging systems

Authors:Feng, Bin (1); Shi, Zelin (2, 3); Xu, Baoshu (2, 3); Zhang, Chengshuo (2, 3); Zhang, Xiaodong (4)

Author affiliation:(1) School of Optoelectronic Engineering, Xi'an Technological University, Xi'an; 710032, China; (2) Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang; 110016, China; (3) Key Laboratory of Opto-electronic Information Processing, Chinese Academy of Sciences, Shenyang; 110016, China; (4) State Key Laboratory of Precision Measuring Technology and Instruments, Centre of MicroNano Manufacturing Technology, Tianjin University, Tianjin; 300072, China

Corresponding author:Feng, Bin(fbxa2015@163.com)

Source title:Applied Optics

Abbreviated source title:Appl. Opt.

Volume:55

Issue:21

Issue date:July 20, 2016

Publication year:2016

Pages:5715-5720

Language:English

ISSN:1559128X

E-ISSN:21553165

CODEN:APOPAI

Document type:Journal article (JA)

Publisher:OSA - The Optical Society

Abstract:This paper reports a ZnSe-material phase mask that is applied to athermalization of a conventional infrared imaging system. Its principle, design, manufacture, measurement, and performance validation are successively discussed. This paper concludes that a ZnSe-material phase mask has a permissible manufacturing error 2.14 times as large as a Ge-material phase mask. By constructing and solving an optimization problem, the ZnSe-material phase mask is optimally designed. The optimal phase mask is manufactured and measured with a form manufacturing error of 1.370 μm and a surface roughness value of 9.926 nm. Experiments prove that the wavefront coding athermalized longwave infrared (LWIR) imaging system works well over the temperature range from -40°C to +60°C. © 2016 Optical Society of America.

Number of references:15

Main heading:Optical design

Controlled terms:Germanium - Imaging systems - Infrared imaging - Infrared radiation - Manufacture - Optimization - Surface roughness - Thermography (imaging)

Uncontrolled terms:Athermalization - Longwave infrared - Manufacturing errors - Optimization problems - Performance validation - Phase masks - Temperature range - Wave-front coding

Classification code:537.1 Heat Treatment Processes - 549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals - 741.1 Light/Optics - 742.1 Photography - 746 Imaging Techniques - 921.5 Optimization Techniques - 931.2 Physical Properties of Gases, Liquids and Solids

Numerical data indexing:Size 1.37e-06m, Size 9.93e-09m

DOI:10.1364/AO.55.005715

Funding Details: Number; Acronym; Sponsor: 51375337; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: CXJJ-14-S116; CAS; Chinese Academy of Sciences

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20163502747262

Title:A design of driving circuit for star sensor imaging camera

Authors:Li, Da-Wei (1); Yang, Xiao-Xu (1); Han, Jun-Feng (1); Liu, Zhao-Hui (1)

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

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

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:9796

Monograph title:Selected Papers of the Photoelectronic Technology Committee Conferences held November 2015

Issue date:2016

Publication year:2016

Article number:97961Q

Language:English

ISSN:0277786X

E-ISSN:1996756X

CODEN:PSISDG

ISBN-13:9781628418811

Document type:Conference article (CA)

Conference name:International Symposia on Atmosphere Optics and Adaptive Optics, Testing and Driving of Laser Fusion Energy Technology, High-performance Special Optical Film Technology, Novel Navigation Technology, Monitoring, Early Warning, Removal Technology of Space Targets and Debris, and UAV Payload Technology

Conference date:November 15, 2015 - November 28, 2015

Conference location:Chengdu and Suzhou, China

Conference code:121285

Sponsor:Chinese Academy of Engineering; Chinese Society for Optical Engineering; National Natural Science Foundation of China

Publisher:SPIE

Abstract:The star sensor is a high-precision attitude sensitive measuring instruments, which determine spacecraft attitude by detecting different positions on the celestial sphere. Imaging camera is an important portion of star sensor. The purpose of this study is to design a driving circuit based on Kodak CCD sensor. The design of driving circuit based on Kodak KAI-04022 is discussed, and the timing of this CCD sensor is analyzed. By the driving circuit testing laboratory and imaging experiments, it is found that the driving circuits can meet the requirements of Kodak CCD sensor. © 2016 SPIE.

Number of references:4

Main heading:Electric network analysis

Controlled terms:Adaptive optics - Cameras - Charge coupled devices - Laboratories - Reconfigurable hardware - Space debris - Stars - Timing circuits - Tracking (position)

Uncontrolled terms:Celestial sphere - cut off - Driving circuits - High-precision - Imaging experiments - Sensitive measuring - Spacecraft attitude - timing

Classification code:656.1 Space Flight - 657.2 Extraterrestrial Physics and Stellar Phenomena - 703.1.1 Electric Network Analysis - 713.4 Pulse Circuits - 714.2 Semiconductor Devices and Integrated Circuits - 721.3 Computer Circuits - 741.1 Light/Optics - 742.2 Photographic Equipment

DOI:10.1117/12.2228887

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20163302706231

Title:Porous propellant burning rate enhanced by plasma

Authors:Ni, Yanjie (1); Xing, Rongjun (2); Wan, Gang (1); Jin, Yong (1); Li, Haiyuan (1); Yang, Chunxia (1); Li, Baoming (1)

Author affiliation:(1) National Key Laboratory of Transient Physics, Nanjing University of Science and Technology, Nanjing; Jiangsu; 210094, China; (2) Xi'an North Huian Chemical Industry Co., Ltd., Xi'an; Shaanxi; 710302, China

Corresponding author:Yang, Chunxia(yangcx@njust.edu.cn)

Source title:Baozha Yu Chongji/Explosion and Shock Waves

Abbreviated source title:Baozha Yu Chongji

Volume:36

Issue:4

Issue date:July 25, 2016

Publication year:2016

Pages:562-567

Language:Chinese

ISSN:10011455

CODEN:BAYCE7

Document type:Journal article (JA)

Publisher:Explosion and Shock Waves

Abstract:The experimental system with a closed bomb was employed to discuss the characteristics of 4/7 high-nitrogen solid propellant burning rate enhanced by plasma. The plasma energy transferred into the closed bomb was measured by the utilization efficiency of the plasma generator electrical energy. A transient burning rate formula of propellant including the influence of pressure gradient and an enhanced gas generation rates coefficient by electrical power was presented. The enhanced gas generation rates coefficient of 4/7 high-nitrogen solid propellant is equal to 0.005 MW-1. Compared with the burning rate formula given by Woodley, the pressure curve simulated by the transient burning rate formula is in better agreement with the tests. And the transient burning rate formula can describe the combustion process of solid propellant by plasma more accurately. © 2016, Editorial Board of EXPLOSION AND SHOCK WAVES. All right reserved.

Number of references:14

Main heading:Nitrogen plasma

Controlled terms:Bombs (ordnance) - Gas generators - Nitrogen - Plasmas - Propellants - Solid propellants

Uncontrolled terms:Burning rate - Combustion pro-cess - Electrothermal chemical launches - Experimental system - Gas generation rates - Mechanics of explosion - Propellant burning rate - Utilization efficiency

Classification code:404 Civil Defense and Military Engineering - 522 Gas Fuels - 804 Chemical Products Generally - 932.3 Plasma Physics

DOI:10.11883/1001-1455(2016)04-0562-06

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20162802589173

Title:Congested scene classification via efficient unsupervised feature learning and density estimation

Authors:Yuan, Yuan (1); Wan, Jia (2); Wang, Qi (2)

Author affiliation:(1) Center for OPTical IMagery Analysis and Learning (OPTIMAL), State Key Laboratory of Transient Optics and Photonics, Xi׳an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi׳an, Shaanxi; 710119, China; (2) School of Computer Science and Center for OPTical IMagery Analysis and Learning (OPTIMAL), Northwestern Polytechnical University, Xi׳an, Shaanxi; 710072, China

Corresponding author:Wang, Qi(crabwq@nwpu.edu.cn)

Source title:Pattern Recognition

Abbreviated source title:Pattern Recogn.

Volume:56

Issue date:August 1, 2016

Publication year:2016

Pages:159-169

Language:English

ISSN:00313203

CODEN:PTNRA8

Document type:Journal article (JA)

Publisher:Elsevier Ltd

Abstract:An unsupervised learning algorithm with density information considered is proposed for congested scene classification. Though many works have been proposed to address general scene classification during the past years, congested scene classification is not adequately studied yet. In this paper, an efficient unsupervised feature learning approach with density information encoded is proposed to solve this problem. Based on spherical k-means, a feature selection process is proposed to eliminate the learned noisy features. Then, local density information which better reflects the crowdedness of a scene is encoded by a novel feature pooling strategy. The proposed method is evaluated on the assembled congested scene data set and UIUC-sports data set, and intensive comparative experiments justify the effectiveness of the proposed approach. © 2016 Elsevier Ltd

Number of references:50

Main heading:Classification (of information)

Controlled terms:Algorithms - Computer vision - Learning algorithms

Uncontrolled terms:Density estimation - Feature pooling - K-means - Scene classification - Unsupervised feature learning

Classification code:716.1 Information Theory and Signal Processing - 723.5 Computer Applications

DOI:10.1016/j.patcog.2016.03.020

Funding Details: Number; Acronym; Sponsor: 61105012; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 61379094; NSFC; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20163002639200

Title:SERF: A Simple, Effective, Robust, and Fast Image Super-Resolver from Cascaded Linear Regression

Authors:Hu, Yanting (1); Wang, Nannan (2); Tao, Dacheng (3); Gao, Xinbo (1); Li, Xuelong (4)

Author affiliation:(1) State Key Laboratory of Integrated Services Networks, School of Electronic Engineering, Xidian University, Xi'an; 710071, China; (2) State Key Laboratory of Integrated Services Networks, School of Telecommunications Engineering, Xidian University, Xi'an; 710071, China; (3) Centre for Quantum Computation and Intelligent Systems, Faculty of Engineering and Information Technology, University of Technology Sydney, Ultimo; NSW; 2007, Australia; (4) State Key Laboratory of Transient Optics and Photonics, Center for Optical Imagery Analysis and Learning, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China

Source title:IEEE Transactions on Image Processing

Abbreviated source title:IEEE Trans Image Process

Volume:25

Issue:9

Issue date:September 2016

Publication year:2016

Pages:4091-4102

Article number:7491236

Language:English

ISSN:10577149

CODEN:IIPRE4

Document type:Journal article (JA)

Publisher:Institute of Electrical and Electronics Engineers Inc.

Abstract:Example learning-based image super-resolution techniques estimate a high-resolution image from a low-resolution input image by relying on high- and low-resolution image pairs. An important issue for these techniques is how to model the relationship between high- and low-resolution image patches: most existing complex models either generalize hard to diverse natural images or require a lot of time for model training, while simple models have limited representation capability. In this paper, we propose a simple, effective, robust, and fast (SERF) image super-resolver for image super-resolution. The proposed super-resolver is based on a series of linear least squares functions, namely, cascaded linear regression. It has few parameters to control the model and is thus able to robustly adapt to different image data sets and experimental settings. The linear least square functions lead to closed form solutions and therefore achieve computationally efficient implementations. To effectively decrease these gaps, we group image patches into clusters via k-means algorithm and learn a linear regressor for each cluster at each iteration. The cascaded learning process gradually decreases the gap of high-frequency detail between the estimated high-resolution image patch and the ground truth image patch and simultaneously obtains the linear regression parameters. Experimental results show that the proposed method achieves superior performance with lower time consumption than the state-of-the-art methods. © 2016 IEEE.

Number of references:52

Main heading:Iterative methods

Controlled terms:Channel capacity - Linear regression - Optical resolving power - Regression analysis - Surface reconstruction

Uncontrolled terms:Closed form solutions - Computationally efficient - example learning based - High resolution image - Image super resolutions - K-means - Linear regression parameters - State-of-the-art methods

Classification code:716.1 Information Theory and Signal Processing - 741.1 Light/Optics - 921.6 Numerical Methods - 922.2 Mathematical Statistics

DOI:10.1109/TIP.2016.2580942

Funding Details: Number; Acronym; Sponsor: 61432014; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 61501339; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: DP-140102164; ARC; Australian Research Council - Number; Acronym; Sponsor: FT-130101457; ARC; Australian Research Council - Number; Acronym; Sponsor: LE-140100061; ARC; Australian Research Council

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20161202135361

Title:Decision-making method of strategy intelligence based on the lifecycle model for technology equipages

Authors:Ma, Nan (1); Zhang, Li (1); Zhao, Jian (1); Xue, Yuan (1); Guo, Huinan (2)

Author affiliation:(1) Air Force Engineering University, Science College, Xi’an, Shaanxi, China; (2) Xi’an Institute of Optics and Precision Mechanics Chinese Academy of Sciences, Xi’an, Shaanxi, China

Source title:Advances in Energy, Environment and Materials Science - Proceedings of the International Conference on Energy, Environment and Materials Science, EEMS 2015

Abbreviated source title:Adv. Energy Environ. Mater. Sci. Proc. Intern. Conf. Energy Environ. Mater. Sci.

Monograph title:Advances in Energy, Environment and Materials Science - Proceedings of the International Conference on Energy, Environment and Materials Science, EEMS 2015

Issue date:2016

Publication year:2016

Pages:839-843

Language:English

ISBN-13:9781138029316

Document type:Conference article (CA)

Conference name:International Conference on Energy, Environment and Materials Science, EEMS 2015

Conference date:August 25, 2015 - August 26, 2015

Conference location:Guangzhou, China

Conference code:164079

Publisher:CRC Press/Balkema

Abstract:Technology literatures contain useful information regarding strategy intelligence, which can be utilized through modern computer-aided technique and digital data mining method. In order to provide an effective decision support for military equipage strategy, we propose a novel technology lifecycle model, which can clearly describe the trend of development of a core technology. Meanwhile, a decision-making method is proposed that provides a new approach to analyze literature intelligence. To approve the proposed method, an actual case about FSS is selected, and simulation analysis shows that the proposed method can accurately analyze transformation relationship between technology and new equipages, which is a useful decision support mode to policymakers. © 2016 Taylor & Francis Group, London.

Number of references:10

Main heading:Data mining

Controlled terms:Decision making - Decision support systems - Life cycle

Uncontrolled terms:Computer aided technique - Core technology - Decision supports - Decision-making method - Life cycle model - New approaches - Policy makers - Simulation analysis

Classification code:723.2 Data Processing and Image Processing - 912.2 Management

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20153101083519

Title:Study of a symmetrically structured SPR sensor and its dual-wavelength differential method

Authors:Yang, Hai-Ma (1, 2, 3); Ma, Cai-Wen (1); Wang, Jian-Yu (2); Liu, Jin (4); Chen, Bao-Xue (3)

Author affiliation:(1) Xian Institute of Optics and Precision Mechanics of CAS, Xian, China; (2) University of Chinese, Academy of Sciences, Beijing, China; (3) School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai, China; (4) College of Electronic and Electrical Engineering, Shanghai University of Engineering Science, Shanghai, China

Corresponding author:Yang, Hai-Ma(snowyhm@sina.com)

Source title:Journal of Modern Optics

Abbreviated source title:J. Mod. Opt.

Volume:63

Issue:2

Issue date:January 19, 2016

Publication year:2016

Pages:85-91

Language:English

ISSN:09500340

E-ISSN:13623044

CODEN:JMOPEW

Document type:Journal article (JA)

Publisher:Taylor and Francis Ltd.

Abstract:This study investigates a novel structure for surface plasmon resonance sensing and its dual-wavelength differential method. The surface plasmon wave is excited by a planar waveguide, which is prepared through the ion-exchange method. The distribution of refractive indices is fitted by the Fermi function. The sensing structure is based on a symmetric structure with a metal layer, a measured medium, and another metal layer. The condition for refractive index matching changes with the thicknesses of test samples, thus the test range can be adjusted using this structure. Given two appropriate wavelengths and for detection by the intensity method and an increase in the refractive index, the intensity variety at can be positive, whereas that at can be negative. When the refractive indices are determined based on differential values, sensitivity is improved. Solutions with refractive index values ranging from 1.33 to 1.428 are detected in the experiments using the single-wavelength method and the dual-wavelength differential method. Results show that the differential detection method enhances the adjustability and sensitivity of the SPR sensor in combination with a symmetric structure. © 2015 Taylor & Francis.

Number of references:16

Main heading:Refractive index

Controlled terms:Ion exchange - Planar waveguides - Plasmons - Surface plasmon resonance - Waveguides

Uncontrolled terms:Differential detection - Differential methods - Fermi functions - Ion-exchange methods - Refractive index matching - Surface plasmon resonance sensing - Surface plasmon waves - Symmetric structures

DOI:10.1080/09500340.2015.1066455

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20150900590339

Title:Block-Row Sparse Multiview Multilabel Learning for Image Classification

Authors:Zhu, Xiaofeng (1, 2); Li, Xuelong (3); Zhang, Shichao (4)

Author affiliation:(1) School of Mathematics and Statistics, Xi'an Jiaotong University, Xi'an, China; (2) Guangxi Key Laboratory of Multi-source Information Mining and Security, Guangxi Normal University, Guilin, China; (3) Center for Optical Imagery Analysis and Learning, State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Xi'an, China; (4) School of Computer Science and Information Technology, Zhejiang Gongshang University, Hangzhou, China

Corresponding author:Zhang, Shichao(zhangscgxnu@163.com)

Source title:IEEE Transactions on Cybernetics

Abbreviated source title:IEEE Trans. Cybern.

Volume:46

Issue:2

Issue date:February 2016

Publication year:2016

Pages:450-461

Article number:7051274

Language:English

ISSN:21682267

Document type:Journal article (JA)

Publisher:Institute of Electrical and Electronics Engineers Inc.

Abstract:In image analysis, the images are often represented by multiple visual features (also known as multiview features), that aim to better interpret them for achieving remarkable performance of the learning. Since the processes of feature extraction on each view are separated, the multiple visual features of images may include overlap, noise, and redundancy. Thus, learning with all the derived views of the data could decrease the effectiveness. To address this, this paper simultaneously conducts a hierarchical feature selection and a multiview multilabel (MVML) learning for multiview image classification, via embedding a proposed a new block-row regularizer into the MVML framework. The block-row regularizer concatenating a Frobenius norm (F-norm) regularizer and an 2,1-norm regularizer is designed to conduct a hierarchical feature selection, in which the F-norm regularizer is used to conduct a high-level feature selection for selecting the informative views (i.e., discarding the uninformative views) and the 2,1-norm regularizer is then used to conduct a low-level feature selection on the informative views. The rationale of the use of a block-row regularizer is to avoid the issue of the over-fitting (via the block-row regularizer), to remove redundant views and to preserve the natural group structures of data (via the F-norm regularizer), and to remove noisy features (the 2,1-norm regularizer), respectively. We further devise a computationally efficient algorithm to optimize the derived objective function and also theoretically prove the convergence of the proposed optimization method. Finally, the results on real image datasets show that the proposed method outperforms two baseline algorithms and three state-of-The-Art algorithms in terms of classification performance. © 2013 IEEE.

Number of references:66

Main heading:Image classification

Controlled terms:Algorithms - Classification (of information) - Feature extraction

Uncontrolled terms:Classification performance - Computationally efficient - Hierarchical features - Low-level feature selections - Multi-label learning - Multi-view image classifications - Optimization method - State-of-the-art algorithms

DOI:10.1109/TCYB.2015.2403356

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20161602262648

Title:Preparation and characterization of self-cleaning and anti-reflection ZnO-SiO2nanometric films

Authors:Guo, Zhao-Long (1, 2); Zhao, Hai-Xin (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, China; (2) University of the Chinese Academy of Sciences, Beijing 1, China

Corresponding author:Guo, Zhao-Long(gzlxjtu@opt.ac.cn)

Source title:Wuli Xuebao/Acta Physica Sinica

Abbreviated source title:Wuli Xuebao

Volume:65

Issue:6

Issue date:March 20, 2016

Publication year:2016

Article number:064206

Language:Chinese

ISSN:10003290

CODEN:WLHPAR

Document type:Journal article (JA)

Publisher:Institute of Physics, Chinese Academy of Sciences

Abstract:Unlike the general anti-reflection and self-cleaning film such as SiO2and TiO2-SiO2, the ZnO-SiO2nanometric film used as a substrate of excellent transparency in visible region and effective photo-catalytic self-cleaning under UV illumination is seldom studied in the application as a substrate;however, it has a lot of advantages including high transmittance and low refractivity. In this paper, a self-cleaning and anti-reflection ZnO-SiO2nanometric film is successfully fabricated by using a sol-gel dip-coating method. The morphology, crystal structure, surface microstructure and light transmittance of the obtained products are characterized by techniques such as TEM, SAD, XRD, SEM, DTA and UV-vis. Photo-catalytic degradation of the methylene blue (MB) in aqueous solution is used as probe reaction to evaluate the photo-catalytic activity of ZnO-SiO2nanometric film. The TEM images reveal that the as-prepared ZnO nanoparticles are spherical grains with diameters of 12-20 nm, the average grain diameter is about 14.51 nm. ZnO nanoparticles obtained are of hexagonal wurtzite structure revealed by XRD pattern and there exist no other diffraction peaks. Furthermore, the SAD results show that ZnO microstructurs have good crystallinity. In addition, the ZnO grain size is about 14.41 nm by using the Scherrer formula calculation, which is consistent with the TEM results by the Gauss simulation. The UV-vis spectra reveal that the ultraviolet characteristic absorption peak of ZnO-SiO2composite films is located at 368 nm and 375 nm after annealing at different temperatures such as 300 and 450, corresponding to the band gaps of 3.37 eV and 3.31 eV, respectively. It is highly consistent with that obtained from pure ZnO nanoparticles. Increasing the annealing temperature results in a lower refractive index and the increases of the porosity in of the ZnO-SiO2composite films. It has a uniformly refractive index value about 1.23-1.25 and a high porosity value about 50.3%-54.7% when the annealing temperature is 450. Experimental results show that the ZnO-SiO2composite film can enhance the light transmittance of the quartz substrate, due to its lower reflective index and higher porosity. Compared with the quartz substrate, the average optical transmission rate of the quartz glass coated with ZnO-SiO2composite films is increased by about 4.17% at 400-800 nm, which favors greatly anti-reflection characteristics in a wide spectrum range. Meanwhile, the ZnO-SiO2composite films are found to be efficient for photo-catalytically degradation of methylene blue dye under UV illumination, which favors greatly the self-cleaning function. © 2016, Chinese Physical Society.

Number of references:29

Page count:8

Main heading:Composite films

Controlled terms:Annealing - Aromatic compounds - Catalyst activity - Cleaning - Crystal microstructure - Crystal structure - Crystal symmetry - Energy gap - Film preparation - Light transmission - Metal nanoparticles - Nanoparticles - Porosity - Quartz - Refractive index - Sol-gel process - Sol-gels - Solutions - Zinc oxide - Zinc sulfide

Uncontrolled terms:Characteristic absorption - Hexagonal wurtzite structure - Nano-ZnO - Photo catalytic degradation - Photo-catalytic - Photocatalytic activities - Sol-gel dip-coating method - Surface microstructures

Classification code:482.2 Minerals - 537.1 Heat Treatment Processes - 741.1 Light/Optics - 761 Nanotechnology - 802.3 Chemical Operations - 804 Chemical Products Generally - 812.3 Glass - 931.2 Physical Properties of Gases, Liquids and Solids - 933.1.1 Crystal Lattice

DOI:10.7498/aps.65.064206

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20161802335954

Title:Optical microfiber knot resonator (MKR) and its slow-light performance

Authors:Ren, Liyong (1); Xu, Yiping (1, 2); Ma, Chengju (1, 2); Wang, Yingli (1); Kong, Xudong (1, 2); Liang, Jian (1); Ju, Haijuan (1); Ren, Kaili (1, 2); Lin, Xiao (1, 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, China; (2) University of Chinese Academy of Sciences, Beijing, China

Source title:Journal of Physics: Conference Series

Abbreviated source title:J. Phys. Conf. Ser.

Volume:680

Issue:1

Monograph title:5th International Conference on Advances in Optoelectronics and Micro/Nano-Optics, AOM 2015

Issue date:February 3, 2016

Publication year:2016

Article number:012032

Language:English

ISSN:17426588

E-ISSN:17426596

Document type:Conference article (CA)

Conference name:5th International Conference on Advances in Optoelectronics and Micro/Nano-Optics, AOM 2015

Conference date:October 28, 2015 - October 31, 2015

Conference location:Hangzhou, China

Conference code:119906

Publisher:Institute of Physics Publishing

Number of references:36

DOI:10.1088/1742-6596/680/1/012032

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20153501212728

Title:Unsupervised Band Selection Based on Evolutionary Multiobjective Optimization for Hyperspectral Images

Authors:Gong, Maoguo (1); Zhang, Mingyang (1); Yuan, Yuan (2)

Author affiliation:(1) Ministry of Education, International Research, Center for Intelligent Perception and Computation, Xidian University, Xi'an, China; (2) Center for OPTical IMagery Analysis and Learning (OPTIMAL), State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Xi'an, China

Source title:IEEE Transactions on Geoscience and Remote Sensing

Abbreviated source title:IEEE Trans Geosci Remote Sens

Volume:54

Issue:1

Issue date:January 1, 2016

Publication year:2016

Pages:544-557

Article number:7214263

Language:English

ISSN:01962892

CODEN:IGRSD2

Document type:Journal article (JA)

Publisher:Institute of Electrical and Electronics Engineers Inc.

Abstract:Band selection is an important preprocessing step for hyperspectral image processing. Many valid criteria have been proposed for band selection, and these criteria model band selection as a single-objective optimization problem. In this paper, a novel multiobjective model is first built for band selection. In this model, two objective functions with a conflicting relationship are designed. One objective function is set as information entropy to represent the information contained in the selected band subsets, and the other one is set as the number of selected bands. Then, based on this model, a new unsupervised band selection method called multiobjective optimization band selection (MOBS) is proposed. In the MOBS method, these two objective functions are optimized simultaneously by a multiobjective evolutionary algorithm to find the best tradeoff solutions. The proposed method shows two unique characters. It can obtain a series of band subsets with different numbers of bands in a single run to offer more options for decision makers. Moreover, these band subsets with different numbers of bands can communicate with each other and have a coevolutionary relationship, which means that they can be optimized in a cooperative way. Since it is unsupervised, the proposed algorithm is compared with some related and recent unsupervised methods for hyperspectral image band selection to evaluate the quality of the obtained band subsets. Experimental results show that the proposed method can generate a set of band subsets with different numbers of bands in a single run and that these band subsets have a stable good performance on classification for different data sets. © 2015 IEEE.

Number of references:64

Main heading:Multiobjective optimization

Controlled terms:Classification (of information) - Decision making - Evolutionary algorithms - Image processing - Independent component analysis - Optimization - Set theory - Spectroscopy

Uncontrolled terms:Evolutionary multiobjective optimization - Hyper-spectral images - Hyperspectral image processing - Information entropy - Multi objective evolutionary algorithms - Multi-objective modeling - Objective functions - Single objective optimization problems

DOI:10.1109/TGRS.2015.2461653

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20161902367635

Title:A parallel primal-dual splitting method for image restoration

Authors:He, Chuan (1); Hu, Changhua (1); Li, Xuelong (2); Zhang, Wei (1)

Author affiliation:(1) High-Tech Institute of Xi'an, Xi'an; Shaanxi; 710025, China; (2) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; Shaanxi; 710199, China

Corresponding author:He, Chuan(hechuan8512@163.com)

Source title:Information Sciences

Abbreviated source title:Inf Sci

Volume:358-359

Issue date:September 1, 2016

Publication year:2016

Pages:73-91

Language:English

ISSN:00200255

CODEN:ISIJBC

Document type:Journal article (JA)

Publisher:Elsevier Inc.

Abstract:We develop a parallel primal-dual splitting method to solve large-scale image restoration problems, which involve the sum of several linear-operator-coupled nonsmooth but proximable terms. With the proposed method, the objective function is decomposed into pieces that can be processed individually. No inverse operator is involved in our method and the highly parallel structure makes it preferable in distributed computation. The convergence is proven and the convergence rate is analyzed. Besides, its equivalence to the relaxed parallel linearized alternating direction method of multipliers (PLADMM) is addressed. Applications to image restoration problems with compound l1-regularizer and comparisons with state-of-the-art methods are detailed to show the superiority of the proposed method. © 2016 Elsevier Inc. All rights reserved.

Number of references:38

Main heading:Inverse problems

Controlled terms:Image reconstruction - Linearization - Mathematical operators - Restoration

Uncontrolled terms:Alternating direction method of multipliers - Compound l1-regularization - Convergence rates - Distributed computations - Image restoration problem - Objective functions - Primal-dual - State-of-the-art methods

DOI:10.1016/j.ins.2016.04.004

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20162602537611

Title:Influence of Driving Frequency on the Argon Dielectric Barrier Discharge Excited by Gaussian Voltage at Atmospheric Pressure

Authors:Xu, Yonggang (1, 2); Jiang, Weiman (2); Tang, Jie (2); Zhu, Sha (2); Wang, Yishan (2); Li, Yongfang (1); Zhao, Wei (2); Duan, Yixiang (2, 3)

Author affiliation:(1) School of Physics and Information Technology, Shaanxi Normal University, Xi'an; 710062, 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) Research Center of Analytical Instrumentation, Sichuan University, Chengdu; 610064, China

Source title:IEEE Transactions on Plasma Science

Abbreviated source title:IEEE Trans Plasma Sci

Volume:44

Issue:11

Issue date:November 2016

Publication year:2016

Pages:2553-2563

Article number:7494657

Language:English

ISSN:00933813

CODEN:ITPSBD

Document type:Journal article (JA)

Publisher:Institute of Electrical and Electronics Engineers Inc.

Abstract:A 1-D self-consistent fluid model was employed to investigate the effect of driving frequency on the discharge characters of a dielectric barrier discharge at atmospheric pressure in argon excited by a periodic Gaussian voltage. The simulation results indicate that there are two discharge modes: 1) Townsend and 2) glow modes in the multipulse discharge and different transitions between them during the discharge take place with the increase in driving frequency. When the driving frequency is 1 kHz, there is a tendency of transition from the Townsend mode through glow and finally back to the Townsend one during the positive half-circle of applied Gaussian voltage. However, the discharge in the half-circle can all along operate in the glow mode with the higher driving frequency. Moreover, when the driving frequency is sufficiently high, there are also distinct fluctuations of spatial performance of the charge densities in the positive column during the glow discharge. This is caused by the fact that a lot of charged particles created in the gas gap have not enough time to drift and diffuse to the dielectric barriers, and then these particles are preserved in the local discharge gap at such a high frequency. A comparison of the spatial and temporal evolutions of the electron density at different driving frequencies indicates that the increase in the driving frequency can enhance the plasma chemistry and also expand its volume. © 2016 IEEE.

Number of references:37

Main heading:Dielectric materials

Controlled terms:Atmospheric chemistry - Atmospheric pressure - Charged particles - Dielectric devices - Flow control - Gaussian distribution - Glow discharges

Uncontrolled terms:Dielectric barrier - Dielectric barrier discharges - Driving frequencies - High frequency HF - Plasma chemistries - Positive column - Spatial performance - Temporal evolution

Numerical data indexing:Frequency 1.00e+03Hz

DOI:10.1109/TPS.2016.2572733

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20164903101585

Title:Radiometric calibration of space remote sensing camera

Authors:Guo, Huinan (1); Yang, Hongtao (1); Song, Xiaodong (1); Zhao, Ronghui (1); Ma, Nan (2); Wang, Wei (3)

Author affiliation:(1) Xi'An Institute of Optics and Precision Mechanics of CAS, No.17, Xinxi Rd, Xi'an, Shaanxi, China; (2) People's Liberation Army of No.95879, Chengdu, Sichuan, China; (3) Xianyang Vocational Technical College, No.1 Tongyi Rd, Xianyang, Shaanxi, China

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

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:10033

Monograph title:Eighth International Conference on Digital Image Processing, ICDIP 2016

Issue date:2016

Publication year:2016

Article number:100333I

Language:English

ISSN:0277786X

E-ISSN:1996756X

CODEN:PSISDG

ISBN-13:9781510605039

Document type:Conference article (CA)

Conference name:8th International Conference on Digital Image Processing, ICDIP 2016

Conference date:May 20, 2016 - May 23, 2016

Conference location:Chengu, China

Conference code:124814

Sponsor:Chengdu University of Information Technology; Chinese Academy of Sciences Chengdu Institute of Computer Applications; International Association of Computer Science and Information Technology; Sichuan Province Computer Federation

Publisher:SPIE

Abstract:Radiometric calibration is an important part for space remote sensing camera to obtain an accurate radiation value of ground target. The main significance of radiometric calibration is to reduce the influence by external scene and internal parameters of camera and to recover the real radiation property of objects. In order to break the limitation of line array imaging sensor, we propose a radiometric calibration method based on camera state matrix for area array camera. According to camera response characteristics, calculate and fit a functional relationship between the input radiance energy and the output digital number. Meanwhile, analyse and describe the procedure of radiometric calibration in detail. Experimental results indicates that the calibration method can provide high accuracy linear fitting parameters and can be widely applied to a large variety digital imaging systems. © 2016 SPIE.

Number of references:11

Main heading:Calibration

Controlled terms:Cameras - Image processing - Imaging systems - Radiometry - Remote sensing - Space optics

Uncontrolled terms:Calibration method - Camera response - Digital imaging system - Functional relationship - Internal parameters - Radiation properties - Radiometric calibrations - Space remote sensing camera

Classification code:656.1 Space Flight - 742.2 Photographic Equipment - 746 Imaging Techniques - 944.8 Radiation Measurements

DOI:10.1117/12.2245147

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20164903095495

Title:Influence of electrode types on the electrohydrodynamic instability patterning process: a comparative study

Authors:Liu, Minzhe (1, 2); Li, Hefu (1); Yu, Weixing (3); Wang, Taisheng (1); Liu, Zhenyu (1); Desmulliez, Marc. P. Y. (4)

Author affiliation:(1) State Key Laboratory of Applied Optics, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, No. 3888, Dongnanhu Road, Changchun; Jilin, China; (2) University of the Chinese Academy of Science, Beijing; 100049, China; (3) Key Laboratory of Spectral Imaging Technology, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, No. 17, Xinxi Road, Xian; 710119, China; (4) MIcroSystems Engineering Centre (MISEC), School of Engineering and Physical Sciences, Heriot-Watt University, Edinburgh; EH14 4AS, United Kingdom

Corresponding author:Yu, W.(yuwx@opt.ac.cn)

Source title:RSC Advances

Abbreviated source title:RSC Adv.

Volume:6

Issue:113

Issue date:2016

Publication year:2016

Pages:112300-112306

Language:English

E-ISSN:20462069

CODEN:RSCACL

Document type:Journal article (JA)

Publisher:Royal Society of Chemistry

Abstract:This article studies the effect that different types of patterned electrodes have on the electrohydrodynamic instability patterning (EHDIP) process for the faithful replication of micro- and nanostructures. Two types of patterned electrodes are studied. One is fully conductive, i.e. both pattern and substrate are conductive. The other type has conductive microstructures fabricated on a dielectric substrate. By employing the COMSOL™ Multiphysics software package, a rigorous numerical simulation of the EHDIP process has been carried out for both types of electrodes. The simulation results show that both electrodes can realize a faithful replication of the micro- and nanostructures once the variable, ΔE/Δx, reaches the critical value. Moreover, it is demonstrated that a fully conductive template is preferred if a small polymer film thickness is employed; a partially conductive electrode is preferred for larger film thickness. These results provide guidelines for the better control of the EHDIP process in order to realize the perfect pattern replication of structures for a variety of applications in MEMS or micro/nanofluidics. © The Royal Society of Chemistry.

Number of references:38

Main heading:Nanostructures

Controlled terms:Computer software - Dielectric materials - Electrodes - Electrohydrodynamics - Film thickness - Polymer films - Semiconducting films

Uncontrolled terms:Comparative studies - Conductive electrodes - Conductive microstructures - Dielectric substrates - Electrohydrodynamic instability - Micro and nanostructures - Multiphysics software - Patterned electrode

Classification code:708.1 Dielectric Materials - 712.1 Semiconducting Materials - 723 Computer Software, Data Handling and Applications - 761 Nanotechnology - 815.1 Polymeric Materials - 933 Solid State Physics

DOI:10.1039/C6RA05596F

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20164903095170

Title:Misalignment induced aberration off-axis optical system

Authors:Pang, Zhihai (1); Fan, Xuewu (1); Ma, Zhen (1); Zou, Gangyi (1)

Author affiliation:(1) Space Optics Laboratory, Xi'An Institute of Optics and Precision Mechanics. CAS, Shanxi Xi'an; 710119, China

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

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:9682

Monograph title:8th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes

Issue date:2016

Publication year:2016

Article number:96820U

Language:English

ISSN:0277786X

E-ISSN:1996756X

CODEN:PSISDG

ISBN-13:9781628419177

Document type:Conference article (CA)

Conference name:8th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes, AOMATT 2016

Conference date:April 26, 2016 - April 29, 2016

Conference location:Suzhou, China

Conference code:124815

Sponsor:Chinese Academy of Sciences, Institute of Optics and Electronics (IOE); The Chinese Optical Society (COS)

Publisher:SPIE

Abstract:Through introducing transformed pupil vector and shifted center of aberration fields vector into the nodal aberration expansions of an axially symmetric optical system, the aberration expression in third order of an off-axis optical system and misaligned off-axis optical system are detailed. Nodal aberration characteristics of misaligned off-axis optical system are revealed only by analyzing the pupil decentration vector, aberration fields shifted vector and the aberration coefficients of the axially symmetric optical system. Actually, it is well demonstrated that the 3rd spherical aberration, 3rd coma, 3rd astigmatism in a misalignment off-axis system are comparable to the aberrations in a misalignment axially symmetric system. Otherwise it will not only induced constant 3rd spherical aberration but also constant 3rd coma and 3rd astigmatism over the field of view, when aligned an off-axis optical system elements with error axial spacing. © 2016 SPIE.

Number of references:9

Main heading:Optical systems

Controlled terms:Aberrations - Alignment - Aspherics - Manufacture - Mirrors - Optical testing - Telescopes - Vectors

Uncontrolled terms:Aberration coefficients - Axial spacing - Axially symmetric - Decentration - Field of views - Off-axis - Spherical aberrations - System elements

Classification code:537.1 Heat Treatment Processes - 601.1 Mechanical Devices - 741.1 Light/Optics - 741.3 Optical Devices and Systems - 921.1 Algebra

DOI:10.1117/12.2243446

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20165003113955

Title:Method used to test the imaging consistency of binocular camera's left-right optical system

Authors:Liu, Meiying (1); Wang, Hu (1); Liu, Jie (1); Xue, Yaoke (1); Yang, Shaodong (1); Zhao, Hui (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:Liu, Meiying(liumeiying@opt.ac.cn)

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

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:9684

Monograph title:8th International Symposium on Advanced Optical Manufacturing and Testing Technology: Optical Test, Measurement Technology, and Equipment

Issue date:2016

Publication year:2016

Article number:96842R

Language:English

ISSN:0277786X

E-ISSN:1996756X

CODEN:PSISDG

ISBN-13:9781628419191

Document type:Conference article (CA)

Conference name:8th International Symposium on Advanced Optical Manufacturing and Testing Technology: Optical Test, Measurement Technology, and Equipment, AOMATT 2016

Conference date:April 26, 2016 - April 29, 2016

Conference location:Suzhou, China

Conference code:124817

Sponsor:Chinese Academy of Sciences, Institute of Optics and Electronics (IOE); The Chinese Optical Society (COS)

Publisher:SPIE

Abstract:To binocular camera, the consistency of optical parameters of the left and the right optical system is an important factor that will influence the overall imaging consistency. In conventional testing procedure of optical system, there lacks specifications suitable for evaluating imaging consistency. In this paper, considering the special requirements of binocular optical imaging system, a method used to measure the imaging consistency of binocular camera is presented. Based on this method, a measurement system which is composed of an integrating sphere, a rotary table and a CMOS camera has been established. First, let the left and the right optical system capture images in normal exposure time under the same condition. Second, a contour image is obtained based on the multiple threshold segmentation result and the boundary is determined using the slope of contour lines near the pseudo-contour line. Third, the constraint of gray level based on the corresponding coordinates of left-right images is established and the imaging consistency could be evaluated through standard deviation σ of the imaging grayscale difference D (x, y) between the left and right optical system. The experiments demonstrate that the method is suitable for carrying out the imaging consistency testing for binocular camera. When the standard deviation 3σ distribution of imaging gray difference D (x, y) between the left and right optical system of the binocular camera does not exceed 5%, it is believed that the design requirements have been achieved. This method could be used effectively and paves the way for the imaging consistency testing of the binocular camera. © 2016 SPIE.

Number of references:9

Main heading:Optical systems

Controlled terms:Binoculars - Bins - Cameras - Contour measurement - Image segmentation - Manufacture - Optical testing - Statistics

Uncontrolled terms:Binocular camera - Contour line - Conventional testing - Integrating spheres - Measurement system - Multiple threshold - Optical imaging system - Standard deviation

Classification code:537.1 Heat Treatment Processes - 694.4 Storage - 741.3 Optical Devices and Systems - 742.2 Photographic Equipment - 922.2 Mathematical Statistics

Numerical data indexing:Percentage 5.00e+00%

DOI:10.1117/12.2242265

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20164603010560

Title:Deep representation for abnormal event detection in crowded scenes

Authors:Feng, Yachuang (1, 2); Yuan, Yuan (1); Lu, Xiaoqiang (1)

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

Source title:MM 2016 - Proceedings of the 2016 ACM Multimedia Conference

Abbreviated source title:MM - Proc. ACM Multimed. Conf.

Monograph title:MM 2016 - Proceedings of the 2016 ACM Multimedia Conference

Issue date:October 1, 2016

Publication year:2016

Pages:591-595

Language:English

ISBN-13:9781450336031

Document type:Conference article (CA)

Conference name:24th ACM Multimedia Conference, MM 2016

Conference date:October 15, 2016 - October 19, 2016

Conference location:Amsterdam, United kingdom

Conference code:124107

Sponsor:ACM SIGMM

Publisher:Association for Computing Machinery, Inc

Abstract:Abnormal event detection is extremely important, especially for video surveillance. Nowadays, many detectors have been proposed based on hand-crafted features. However, it remains challenging to effectively distinguish abnormal events from normal ones. This paper proposes a deep representation based algorithm which extracts features in an unsupervised fashion. Specially, appearance, texture, and short-term motion features are automatically learned and fused with stacked denoising autoencoders. Subsequently, long-term temporal clues are modeled with a long short-term memory (LSTM) recurrent network, in order to discover meaningful regularities of video events. The abnormal events are identified as samples which disobey these regularities. Moreover, this paper proposes a spatial anomaly detection strategy via manifold ranking, aiming at excluding false alarms. Experiments and comparisons on real world datasets show that the proposed algorithm outper-forms state of the arts for the abnormal event detection problem in crowded scenes. © 2016 ACM.

Number of references:13

Main heading:Security systems

Controlled terms:Motion analysis

Uncontrolled terms:Abnormal event detections - Crowded scene - Deep representation - Long short term memory - Real-world datasets - Recurrent networks - Spatial anomalies - Video surveillance

Classification code:723.2 Data Processing and Image Processing - 914.1 Accidents and Accident Prevention

DOI:10.1145/2964284.2967290

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20164703034496

Title:Optically bound colloidal lattices in evanescent optical fields

Authors:Han, Xiang (1, 2); Luo, Hui (1); Xiao, Guangzong (1, 3); Jones, Philip H. (2)

Author affiliation:(1) College of Opto-Electric Science and Engineering, National University of Defense Technology, Changsha; 410073, China; (2) Department of Physics and Astronomy, University College London, Gower Street, London; WC1E 6BT, United Kingdom; (3) State Key Laboratory of Transient Optics and Photonics, Chinese Academy of Sciences, Xi'an; 710119, China

Corresponding author:Jones, Philip H.(philip.jones@ucl.ac.uk)

Source title:Optics Letters

Abbreviated source title:Opt. Lett.

Volume:41

Issue:21

Issue date:November 1, 2016

Publication year:2016

Pages:4935-4938

Language:English

ISSN:01469592

E-ISSN:15394794

CODEN:OPLEDP

Document type:Journal article (JA)

Publisher:OSA - The Optical Society

Abstract:In this Letter, we demonstrate the formation of a stable two-dimensional lattice of colloidal particles in the interference pattern formed by four evanescent optical fields at a dielectric interface. The microspheres are observed to form a two-dimensional square lattice with lattice vectors inclined relative to the beam propagation directions. We use digital video microscopy and particle tracking to measure the Brownian motion of particles bound in the lattice, and use this to characterize fluctuations in the local ordering of particles using the bond orientational order parameter, the probability distribution of which is shown to be a chi-squared distribution. An explanation for the form of this distribution is presented in terms of fluctuations of the modes of a ring of particles connected by springs. © 2016 Optical Society of America.

Number of references:29

Main heading:Optical lattices

Controlled terms:Brownian movement - Computer graphics - Evanescent fields - Multimedia systems - Probability distributions

Uncontrolled terms:Bond orientational order parameters - Chi-squared distribution - Dielectric interface - Digital video microscopy - Interference patterns - Propagation direction - Two dimensional square lattice - Two-dimensional lattices

Classification code:701 Electricity and Magnetism - 723.5 Computer Applications - 744.8 Laser Beam Interactions - 801.3 Colloid Chemistry - 922.1 Probability Theory

DOI:10.1364/OL.41.004935

Funding Details: Acronym; Sponsor: CSC; China Scholarship Council - Sponsor: Leverhulme Trust

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20164603017440

Title:Interference data correction methods for lunar observation with a large-aperture static imaging spectrometer

Authors:Zhang, Geng (1); Wang, Shuang (1); Li, Libo (1); Hu, Xiuqing (2); Hu, Bingliang (1)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; Shaanxi; 710119, China; (2) National Satellite Meteorological Center, China Meteorological Administration, Beijing; 100081, China

Corresponding author:Wang, Shuang(wangshuang@opt.ac.cn)

Source title:Applied Optics

Abbreviated source title:Appl. Opt.

Volume:55

Issue:31

Issue date:November 1, 2016

Publication year:2016

Pages:8770-8778

Language:English

ISSN:1559128X

E-ISSN:21553165

CODEN:APOPAI

Document type:Journal article (JA)

Publisher:OSA - The Optical Society

Abstract:The lunar spectrum has been used in radiometric calibration and sensor stability monitoring for spaceborne optical sensors. A ground-based large-aperture static image spectrometer (LASIS) can be used to acquire the lunar spectral image for lunar radiance model improvement when the moon orbits over its viewing field. The lunar orbiting behavior is not consistent with the desired scanning speed and direction of LASIS. To correctly extract interferograms from the obtained data, a translation correction method based on image correlation is proposed. This method registers the frames to a reference frame to reduce accumulative errors. Furthermore, we propose a circle-matching-based approach to achieve even higher accuracy during observation of the full moon. To demonstrate the effectiveness of our approaches, experiments are run on true lunar observation data. The results show that the proposed approaches outperform the state-of-the-art methods. © 2016 Optical Society of America.

Number of references:14

Main heading:Moon

Controlled terms:Orbits - Spectrometers - Spectroscopy

Uncontrolled terms:Accumulative errors - Correction method - Image correlations - Interference data - Lunar observations - Radiometric calibrations - Stability monitoring - State-of-the-art methods

Classification code:657.2 Extraterrestrial Physics and Stellar Phenomena - 741.3 Optical Devices and Systems

DOI:10.1364/AO.55.008770

Funding Details: Acronym; Sponsor: CAS; Chinese Academy of Sciences - Number; Acronym; Sponsor: 61501456; NSFC; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20164302952423

Title:Terahertz emission dependence on the polarization angle between two-color lasers

Authors:Xie, Jun (1, 2); Fan, Wen-Hui (1); Tang, Jie (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) University of Chinese Academy of Sciences, Beijing; 100049, China

Corresponding author:Fan, Wen-Hui(fanwh@opt.cn)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:45

Issue:10

Issue date:October 1, 2016

Publication year:2016

Article number:1030002

Language:English

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:The influence of the polarization angle between two-color lasers on the Terahertz (THz) emission was investigated based on a modified two-dimensional transient current model. By changing the polarization angle between the fundamental frequency laser and its second harmonic laser beam, it is found that, the emitted THz amplitude varys periodically with the chaning of the polarization angle in laser plasma, and the optimal angle is also changed with the different laser intensity. Under the comparatively low laser intensity (≤2×1014W/cm2), the THz amplitude can reach the maximum when the two-color lasers have the same polarization. However, the optimal angle will increase with the increasing of the total laser intensity when the laser intensity is high enough(>2×1014W/cm2). The electron density was firstly used to analyze this phenomenon under comparatively low laser intensity and then the residual drift current was utilized to reveal the underlying physical mechanism. It was found that, the residual current density is the essential source of the THz waves and which can determine the intensity of THz emission © 2016, Science Press. All right reserved.

Number of references:23

Page count:6

Main heading:Terahertz waves

Controlled terms:Color - Laser beams - Laser produced plasmas - Lasers - Plasma interactions - Plasmas - Polarization

Uncontrolled terms:Fundamental frequencies - Intensity - Laser intensities - Physical mechanism - Polarization angle - Tera Hertz - Terahertz emissions - Two-dimensional transient

Classification code:711 Electromagnetic Waves - 741.1 Light/Optics - 744.1 Lasers, General - 744.8 Laser Beam Interactions - 932.3 Plasma Physics

DOI:10.3788/gzxb20164510.1030002

Funding Details: Number; Acronym; Sponsor: J08-029; CAS; Chinese Academy of Sciences - Number; Acronym; Sponsor: YYYJ-1123-4; CAS; Chinese Academy of Sciences

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20163502755972

Title:WS2/fluorine mica (FM) saturable absorber for high power optical pulse formation

Authors:Li, L. (1, 2); Wang, Z.F. (2); Wang, Y.G. (2); Wang, X. (2); Yang, G.W. (2)

Author affiliation:(1) School of Science, Xi'an University of Posts and Telecommunications, Xi'an; 710121, 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, L.(lilu@opt.cn)

Source title:Optik

Abbreviated source title:Optik

Volume:127

Issue:21

Issue date:November 1, 2016

Publication year:2016

Pages:10223-10227

Language:English

ISSN:00304026

Document type:Journal article (JA)

Publisher:Elsevier GmbH

Abstract:The report presents the high power mode-locking operation in an anomalous-dispersion fiber laser with a novel WS2saturable absorber (SA) based on fluorine mica (FM) substrate. Compared to organic host material such as polymer, FM has higher softening temperature, heat dissipation and laser damage threshold. By employing the SA, a stable mode-locked fiber laser is achieved. The duration of the pulse broadens from 2.816 ns to 3.654 ns almost linearly with increasing pump power. The average output power and single pulse energy can increase up to 33.5 mW and 4 nJ at the maximum pump power respectively. The results indicate that WS2/FM material is an ideal SA for high power Er-doped fiber (EDF) lasers. © 2016 Elsevier GmbH

Number of references:26

Main heading:Mode-locked fiber lasers

Controlled terms:Dispersions - Fiber lasers - Fibers - Laser damage - Laser mode locking - Locks (fasteners) - Mica - Optical pumping - Organic lasers - Saturable absorbers - Silicate minerals

Uncontrolled terms:Anomalous dispersion - Average output power - Er-doped fibers - High-power optical pulse - Laser damage threshold - Maximum pump power - Single pulse energy - Softening temperature

Classification code:482.2 Minerals - 744 Lasers - 951 Materials Science

Numerical data indexing:Energy 4.00e-09J, Power 3.35e-02W, Time 2.82e-09s to 3.65e-09s

DOI:10.1016/j.ijleo.2016.08.040

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20163202702043

Title:Study on the deep neural network of intelligent image detection and the improvement of elastic momentum on image recognition

Authors:Yue, Qi (1, 2); Ma, Caiwen (1)

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

Corresponding author:Yue, Qi

Source title:Journal of Computational and Theoretical Nanoscience

Abbreviated source title:J. Comput. Theor. Nanosci.

Volume:13

Issue:5

Issue date:May 2016

Publication year:2016

Pages:3326-3330

Language:English

ISSN:15461955

E-ISSN:15461963

Document type:Journal article (JA)

Publisher:American Scientific Publishers

Abstract:Aiming at deep neural network of intelligent image detection, this paper proposes parameter learning method of exponential elastic momentum, applies this method in the pedestrian detection, the detection accuracy is 97.8%. In addition, this algorithm is compared with adaptive momentum methods, standard momentum gradient method and elastic momentum, and the accuracy obtained through this method increases by 2.6% and 6.5% on average respectively. Copyright © 2016 American Scientific Publishers All rights reserved.

Number of references:13

Main heading:Momentum

Controlled terms:Gradient methods - Image recognition - Object recognition - Target tracking

Uncontrolled terms:Deep neural networks - Detection accuracy - Image detection - Model optimization - Momentum method - Parameter learning - Pedestrian detection

Classification code:921.6 Numerical Methods - 931.1 Mechanics

Numerical data indexing:Percentage 2.60e+00%, Percentage 6.50e+00%, Percentage 9.78e+01%

DOI:10.1166/jctn.2016.4994

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20164102883048

Title:Stable all-fiber Er-doped Q-switched laser with a WS2/fluorine mica (FM) saturable absorber

Authors:Li, Lu (1, 2); Wang, Zhenfu (2); Wang, Yonggang (2); Wang, Xi (2); Yang, Guowen (2); Jiang, Shouzhen (3)

Author affiliation:(1) School of Science, Xi'An University of Posts and Telecommunications, Xi'an; 710121, 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 Physics and Electronics, Shandong Normal University, Jinan; 250014, China

Source title:Laser Physics

Abbreviated source title:Laser Phys.

Volume:26

Issue:10

Issue date:October 2016

Publication year:2016

Article number:105101

Language:English

ISSN:1054660X

E-ISSN:15556611

Document type:Journal article (JA)

Publisher:Institute of Physics Publishing

Abstract:This paper presents a stable all-fiber Q-switched Er-doped fiber (EDF) laser with WS2/fluorine mica (FM) as the saturable absorber (SA). The SA device is obtained by depositing WS2nanosheet layers onto a 20 μm thick one-layer FM substrate using a thermal decomposition method. The modulation depth (MD) of the SA is 8.22% and the non-saturable loss (NL) is 16.38%. By inserting the SA into the EDF laser cavity, stable Q-switched operation is achieved with a central wavelength of 1567 nm. The repetition rate can be tuned from 20.98 kHz to 33.74 kHz and the pulse duration can be adjusted from 8.3 μs to 6.98 μs by increasing the pump power. The maximum output power and the maximum pulse energy are measured to be 2.07 mW and 61.4 nJ, respectively. The experimental results evidently show that the WS2/FM can be regarded as a high-performance SA for fiber lasers. © 2016 Astro Ltd.

Number of references:37

Main heading:Saturable absorbers

Controlled terms:Decomposition - Erbium - Fiber lasers - Fibers - Mica - Optical pumping - Pulse repetition rate - Q switched lasers - Q switching - Silicate minerals

Uncontrolled terms:Central wavelength - Maximum output power - Modulation depth - Non-saturable loss - Q-switched - Q-switched operation - Repetition rate - Thermal decomposition methods

Classification code:482.2 Minerals - 547.2 Rare Earth Metals - 744 Lasers - 802.2 Chemical Reactions

Numerical data indexing:Energy 6.14e-08J, Frequency 2.10e+04Hz to 3.37e+04Hz, Percentage 1.64e+01%, Percentage 8.22e+00%, Power 2.07e-03W, Size 1.57e-06m, Size 2.00e-05m, Time 8.30e-06s to 6.98e-06s

DOI:10.1088/1054-660X/26/10/105101

Funding Details: Number; Acronym; Sponsor: 11474187; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 61205174; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 61378024; NSFC; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20164102887296

Title:Simulation of the electron collection efficiency of a PMT based on the MCP coated with high secondary yield material

Authors:Chen, Lin (1, 2, 4, 5); Tian, Jinshou (1, 5); Zhao, Tianchi (3); Liu, Chunliang (4); Liu, Hulin (1); Wei, Yonglin (1); Sai, Xiaofeng (1); Chen, Ping (1, 2); Wang, Xing (1); Lu, Yu (1); Hui, Dandan (1, 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) Graduate School of Chinese Academy of Sciences (CAS), Beijing; 100049, China; (3) Institute of High Energy Physics (IHEP) of CAS, Beijing; 100049, China; (4) Xi'an Jiaotong University, Xi'an; 710049, China; (5) Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan; 030006, China

Corresponding author:Chen, Lin(chenlin@opt.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:835

Issue date:November 1, 2016

Publication year:2016

Pages:94-98

Language:English

ISSN:01689002

CODEN:NIMAER

Document type:Journal article (JA)

Publisher:Elsevier

Abstract:Owning to the serious loss of photoelectrons striking at the input electrode of traditional microchannel plate (MCP), photoelectron collection efficiency (CE) of photomultiplier tubes based on MCP (MCP-PMTs) fluctuates around the MCP open area fraction and cannot make a breakthrough. Depositing a thin film of high secondary electron yield material on the MCP is proposed as an effective approach to improve the CE. The available simulation and experimental data to validate it, however, is sparse. In our work, a three-dimensional small area MCP model is developed in CST Studio Suite to evaluate the collection efficiencies of PMTs based on the traditional MCP and the coated one, respectively. Results predict that CE of the PMT based on the coated MCP has a significant increase and a better uniformity, which is expected to reach 100%. © 2016 Elsevier B.V.

Number of references:22

Main heading:Image storage tubes

Controlled terms:Deposition - Efficiency - Electron emission - Microchannels - Photoelectrons - Photomultipliers - Photons - Secondary emission

Uncontrolled terms:Area fraction - Collection efficiency - Effective approaches - Electron collections - Micro channel plate - Photo multiplier tube - Photoelectron collection efficiency - Secondary electron yield

Classification code:714.1 Electron Tubes - 802.3 Chemical Operations - 913.1 Production Engineering - 931.3 Atomic and Molecular Physics

Numerical data indexing:Percentage 1.00e+02%

DOI:10.1016/j.nima.2016.08.034

Funding Details: Number; Acronym; Sponsor: 11305258; NSFC; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20154801617835

Title:Effective transfer of micron-size graphene to microfibers for photonic applications

Authors:Wu, Xiaoqin (1); Yu, Shaoliang (1); Yang, Huiran (2); Li, Wenlei (2); Liu, Xueming (2); Tong, Limin (1)

Author affiliation:(1) State Key Laboratory of Modern Optical Instrumentation, Department of Optical Engineering, Zhejiang University, Hangzhou, 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

Corresponding author:Tong, Limin(phytong@zju.edu.cn)

Source title:Carbon

Abbreviated source title:Carbon

Volume:96

Issue date:January 2016

Publication year:2016

Pages:1114-1119

Language:English

ISSN:00086223

CODEN:CRBNAH

Document type:Journal article (JA)

Publisher:Elsevier Ltd

Abstract:We demonstrate an effective approach to transferring micron-size CVD graphene layers onto freestanding microfibers. With micro-manipulation, the coating position and length of the graphene films can be precisely controlled. By coating micrometer-scale (e.g., 20 μm) graphene films onto microfibers with diameters down to 1 μm, we can achieve significantly enhanced light-graphene interaction (e.g., a low saturable-absorption threshold of 40 MW/cm2) and simultaneously maintain a high transmission (73% in maximum) as well. In addition, we use these microscale CVD graphene-coated microfibers (GCMs) as saturable absorbers for all-optical modulation at 1550-nm wavelength with a modulation depth of 12% and passively mode-locked fiber lasing with pulse duration down to 970 fs. © 2015 Elsevier Ltd.

Number of references:34

Main heading:Graphene

Controlled terms:Coatings - Micromanipulators - Modulation - Passive mode locking - Saturable absorbers - Semiconductor quantum wells

Uncontrolled terms:Effective approaches - High transmission - Micro manipulation - Micrometer scale - Modulation depth - Passively mode-locked - Photonic application - Saturable absorption

Classification code:714.2 Semiconductor Devices and Integrated Circuits - 744.1 Lasers, General - 761 Nanotechnology - 804 Chemical Products Generally - 813.2 Coating Materials

Numerical data indexing:Percentage 1.20e+01%, Percentage 7.30e+01%, Size 1.00e-06m, Size 1.55e-06m, Size 2.00e-05m, Surface_Power_Density 4.00e+11W/m2, Time 9.70e-13s

DOI:10.1016/j.carbon.2015.10.069

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20162902595935

Title:The influence of thermal and free carrier dispersion effects on all-optical wavelength conversion in a silicon racetrack-shaped microring resonator

Authors:Wang, Zhaolu (1); Liu, Hongjun (1); Sun, Qibing (1); Huang, Nan (1); Li, Shaopeng (1); Han, Jing (1)

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

Source title:Laser Physics

Abbreviated source title:Laser Phys.

Volume:26

Issue:7

Issue date:July 2016

Publication year:2016

Article number:075403

Language:English

ISSN:1054660X

E-ISSN:15556611

Document type:Journal article (JA)

Publisher:Institute of Physics Publishing

Abstract:We experimentally demonstrate ultra-low pump power wavelength conversion based on four-wave mixing in a silicon racetrack-shaped microring resonator. When the pump and signal are located at the resonance wavelengths, wavelength conversion with a pump power of only 1 mW can be realized in this microring resonator because of the resonant enhancement of the device. However, saturation of the conversion efficiency occurs because of the shift of the resonance peak, which is caused by the change of the effective refractive index induced by a combination of thermal and free carrier dispersion effects, and it is demonstrated that the thermal effect is the leading-order factor for the change of the refractive index. The maximum conversion efficiency of -21 dB is obtained when the pump power is less than 12 mW. This ultra-low-power on-chip wavelength convertor based on a silicon microring resonator can find important potential applications in highly integrated optical circuits for all-optical signal processing. © 2016 Astro Ltd.

Number of references:26

Main heading:Dispersion (waves)

Controlled terms:Conversion efficiency - Efficiency - Four wave mixing - Low power electronics - Optical frequency conversion - Optical resonators - Optical signal processing - Refractive index - Resonators - Signal processing - Silicon - Thermal effects

Uncontrolled terms:All-optical signal processing - All-optical wavelength conversion - Effective refractive index - Free carriers - Integrated optical circuit - Resonance wavelengths - Resonant enhancements - Silicon microring resonators

Classification code:525.5 Energy Conversion Issues - 549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals - 641 Heat and Mass Transfer; Thermodynamics - 716.1 Information Theory and Signal Processing - 741 Light, Optics and Optical Devices - 913.1 Production Engineering - 951 Materials Science

Numerical data indexing:Decibel -2.10e+01dB, Power 1.00e-03W, Power 1.20e-02W

DOI:10.1088/1054-660X/26/7/075403

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20162502528548

Title:Highly efficient spectrally encoded imaging using a 45° tilted fiber grating

Authors:Wang, Guoqing (1); Wang, Chao (1); Yan, Zhijun (2, 3); Zhang, Lin (2)

Author affiliation:(1) School of Engineering and Digital Arts, University of Kent, Canterbury; CT2 7NT, United Kingdom; (2) Aston Institute of Photonic Technologies, Aston University, Birmingham; B4 7ET, United Kingdom; (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, Chao(C.Wang@kent.ac.uk)

Source title:Optics Letters

Abbreviated source title:Opt. Lett.

Volume:41

Issue:11

Issue date:June 1, 2016

Publication year:2016

Pages:2398-2401

Language:English

ISSN:01469592

E-ISSN:15394794

CODEN:OPLEDP

Document type:Journal article (JA)

Publisher:OSA - The Optical Society

Abstract:A novel highly efficient, fiber-compatible spectrally encoded imaging (SEI) system using a 45° tilted fiber grating (TFG) is proposed and experimentally demonstrated for the first time, to the best of our knowledge. The TFG serves as an in-fiber lateral diffraction element, eliminating the need for bulky and lossy free-space diffraction gratings in conventional SEI systems. Under proper polarization control, due to the strong tilted reflection, the 45° TFG offers a diffraction efficiency as high as 93.5%. Our new design significantly reduces the volume of the SEI system and improves energy efficiency and system stability. As a proof-ofprinciple experiment, spectrally encoded imaging of a customer-designed sample (9.6 mm x 3.0 mm) using the TFG-based system is demonstrated. The lateral resolution of the SEI system is measured to be 42 μm in our experiment. © 2016 Optical Society of America.

Number of references:16

Main heading:Diffraction gratings

Controlled terms:Diffraction - Energy efficiency - Fibers - Seebeck effect - System stability

Uncontrolled terms:Diffraction elements - Free space diffraction gratings - In-fiber - Lateral resolution - Polarization control - Tilted fiber gratings

Classification code:525.2 Energy Conservation - 701.1 Electricity: Basic Concepts and Phenomena - 741.3 Optical Devices and Systems - 961 Systems Science

Numerical data indexing:Size 3.00e-03m, Size 4.20e-05m

DOI:10.1364/OL.41.002398

Funding Details: Number; Acronym; Sponsor: 61505244; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: FP7-PEOPLE-2013-CIG-631883; REA; National Natural Science Foundation of China - Number; Sponsor: RG150036; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20162802584886

Title:Frequency comb generation in the green using silicon nitride microresonators

Authors:Wang, Leiran (1, 2); Chang, Lin (1); Volet, Nicolas (1); Pfeiffer, Martin H. P. (3); Zervas, Michael (3); Guo, Hairun (3); Kippenberg, Tobias J. (3); Bowers, John E. (1)

Author affiliation:(1) Department of Electrical and Computer Engineering, University of California, Santa Barbara (UCSB); CA; 93106, United States; (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) École Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland

Corresponding author:Volet, Nicolas(volet@ece.ucsb.edu)

Source title:Laser and Photonics Reviews

Abbreviated source title:Laser Photon. Rev.

Volume:10

Issue:4

Issue date:July 1, 2016

Publication year:2016

Pages:631-638

Language:English

ISSN:18638880

E-ISSN:18638899

Document type:Journal article (JA)

Publisher:Wiley-VCH Verlag

Abstract:Optical frequency combs enable precision measurements in fundamental physics and have been applied to a growing number of applications, such as molecular spectroscopy, LIDAR and atmospheric trace-gas sensing. In recent years, the generation of frequency combs has been demonstrated in integrated microresonators. Extending their spectral range to the visible is generally hindered by strong normal material dispersion and scattering losses. In this paper, we report the first realization of a green-light frequency comb in integrated high-Q silicon nitride (SiN) ring microresonators. Third-order optical non-linearities are utilized to convert a near-infrared Kerr frequency comb to a broadband green light comb. The 1-THz frequency spacing infrared comb covers up to 2/3 of an octave, from 144 to 226 THz (or 1327-2082 nm), and the simultaneously generated green-light comb is centered around 570-580 THz (or 517-526 nm), with comb lines emitted down to 517 THz (or 580 nm) and up to 597 THz (or 502 nm). The green comb power is estimated to be as high as −9.1 dBm in the bus waveguide, with an on-chip conversion efficiency of −34 dB. The proposed approach substantiates the feasibility of on-chip optical frequency comb generation expanding to the green spectral region or even shorter wavelengths. (Figure presented.) . © 2016 by WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

Number of references:30

Main heading:Optical frequency conversion

Controlled terms:Infrared devices - Molecular spectroscopy - Natural frequencies - Nitrides - Optical materials - Optical radar - Resonators - Silicon - Silicon nitride

Uncontrolled terms:Atmospheric trace gas - Fundamental physics - Material dispersions - Optical frequency comb generation - Optical frequency combs - Optical nonlinearity - Precision measurement - Silicon nitride (SiN)

Numerical data indexing:Decibel -3.40e+01dB, Decibel_milliwatts -9.10e+00dBm, Frequency 1.00e+12Hz, Frequency 1.44e+14Hz to 2.26e+14Hz, Frequency 5.17e+14Hz, Frequency 5.70e+14Hz to 5.80e+14Hz, Frequency 5.97e+14Hz, Size 1.33e-06m to 2.08e-06m, Size 5.02e-07m, Size 5.17e-07m to 5.26e-07m, Size 5.80e-07m

DOI:10.1002/lpor.201600006

Funding Details: Number; Acronym; Sponsor: 61475188; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: HR0011-15-C-055; SNF; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20162702564089

Title:Optimization design of two-dimensional magneto optical trap field coils for cold atom interferometer

Authors:Fan, Pengge (1, 2); Wu, Yiming (1); Jia, Sen (1); Wang, Xianhua (1)

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

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

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

Volume:45

Issue:6

Issue date:June 25, 2016

Publication year:2016

Article number:0618003

Language:Chinese

ISSN:10072276

Document type:Journal article (JA)

Publisher:Chinese Society of Astronautics

Abstract:High flux of cold atoms is one of the key technologies to realize high-precision cold atom interferometer. The approach of concatenation of two-dimensional Magnetic Optical Trap (2D-MOT) and three-dimensional Magnetic Optical Trap (3D-MOT) is generally used to obtain high flux of cold atoms. The magnetic field distribution of 2D-MOT is the key influencing factor in this appliance. In this paper, three different(rectangular, race-track and saddle) mathematical models of Anti-Helmholtz coils in 2D-MOT were established to analyze the magnetic field distribution. Then, the magnetic field zero drift and the change of magnetic field gradient caused by the error of eccentricity, coils asymmetry, parallelism and inside diameter asymmetry were analyzed, which were produced in the manufacture and installation process using finite element analysis. Results show that the magnetic field gradient provided by saddle coils is more conducive to produce high flux of cold atoms when eccentricity error is less than 1.14 mm, coils asymmetry error is less than 0.016 A and parallelism error is less than 1.02°. This work may provide theoretical guidance for the design and fabrication of magnetic system of 2D-MOT of cold atom interferometer. © 2016, Editorial Board of Journal of Infrared and Laser Engineering. All right reserved.

Number of references:10

Page count:6

Main heading:Finite element method

Controlled terms:Atoms - Errors - Interferometers - Magnetic fields - Magnetism

Uncontrolled terms:Cold atoms - Helmholtz coil - Key influencing factors - Magnetic field distribution - Magnetic field gradient - Magnetooptical traps - Optical trap - Optimization design

Classification code:701.2 Magnetism: Basic Concepts and Phenomena - 921.6 Numerical Methods - 931.3 Atomic and Molecular Physics - 941.3 Optical Instruments

Numerical data indexing:Electric_Current 1.60e-02A, Size 1.14e-03m

DOI:10.3788/IRLA201645.0618003

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20161502241187

Title:Experimental investigation on laser performance of distributed side-pumping fiber amplifier

Authors:Gao, Cong (1); Ni, Li (1); Wang, Xiaolong (1); Wang, Yuying (1); Wang, Zhen (1, 2, 3); Peng, Kun (1, 2, 3); Huang, Zhihua (1); Wang, Jianjun (1); Jing, Feng (1); Lin, Aoxiang (1)

Author affiliation:(1) Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang, China; (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, China; (3) Graduate School of Chinese Academy of Sciences (CAS), Beijing, China

Corresponding author:Lin, Aoxiang(aoxiang.research@gmail.com)

Source title:2015 11th Conference on Lasers and Electro-Optics Pacific Rim, CLEO-PR 2015

Abbreviated source title:Conf. Lasers Electro-Opt. Pac. Rim, CLEO-PR

Volume:4

Part number:4 of 4

Monograph title:2015 11th Conference on Lasers and Electro-Optics Pacific Rim, CLEO-PR 2015

Issue date:January 7, 2016

Publication year:2016

Article number:7376298

Language:English

ISBN-13:9781467371094

Document type:Conference article (CA)

Conference name:11th Conference on Lasers and Electro-Optics Pacific Rim, CLEO-PR 2015

Conference date:August 24, 2015 - August 28, 2015

Conference location:Busan, Korea, Republic of

Conference code:118957

Publisher:Institute of Electrical and Electronics Engineers Inc.

Abstract:1+1 type distributed-side pumping active fibers were fabricated. Pumped with 976nm LD, over 1kW output power was achieved at 1064nm and 581W power was launched into the coupling unit via one port. © 2015 IEEE.

Number of references:6

Main heading:Pumping (laser)

Controlled terms:Fiber amplifiers

Uncontrolled terms:Active fibers - Experimental investigations - Laser performance - Output power - Side pumping

Classification code:744.1 Lasers, General - 744.4 Solid State Lasers

Numerical data indexing:Power 1.00e+03W, Power 5.81e+02W, Size 1.06e-06m

DOI:10.1109/CLEOPR.2015.7376298

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20162002388438

Title:Design of and experiment on the polarization dehazing imaging system

Authors:Xia, Pu (1, 2); Liu, Xuebin (1); Yan, Peng (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) University of Chinese Academy of Sciences, Beijing; 100049, China

Source title:Xi'an Dianzi Keji Daxue Xuebao/Journal of Xidian University

Abbreviated source title:Xi'an Dianzi Keji Daxue Xuebao

Volume:43

Issue:2

Issue date:April 1, 2016

Publication year:2016

Pages:95-101

Language:Chinese

ISSN:10012400

CODEN:XDKXEP

Document type:Journal article (JA)

Publisher:Science Press

Abstract:In view of the requirement of image quality, integration level and real-time application of the imaging systems under fog weather, this paper reports a polarization imaging system with a dehazing ability. The differential signal is converted by FPGA, and a highly integrated CMOS imaging circuit is built based on the internal PLL of the image sensor and the CamLink protocol. The obtained image is inversed by stokes equations, and the real-time dehazing algorithm is realized by the built-in DSP module. The total size of the polarization imaging system is 117 mm×117 mm×126 mm, and the weight of the system is 1.2 kg. An imaging experiment was made under fog weather, and the dehazing ability of the imaging system is proved by the contrast of the original image and the dehazed image's histogram and RGB distribution. Experimental results show that the imaging system can stably obtain a color dehazed image at 2 048×2 048 @ 180 Hz. © 2016, Science Press. All right reserved.

Number of references:12

Main heading:Demulsification

Controlled terms:CMOS integrated circuits - Digital signal processors - Field programmable gate arrays (FPGA) - Fog - Fog dispersal - Imaging systems - Integrated circuit design - Metals - MOS devices - Oxide semiconductors - Polarization - Real time systems - Signal processing

Uncontrolled terms:Complementary metal oxide semiconductors - Differential signal - Field programmables - Imaging experiments - Integration levels - Polarization imaging - Polarization measurements - Real-time application

Classification code:443.1 Atmospheric Properties - 714.2 Semiconductor Devices and Integrated Circuits - 716.1 Information Theory and Signal Processing - 721.2 Logic Elements - 722.4 Digital Computers and Systems - 746 Imaging Techniques - 802.3 Chemical Operations

Numerical data indexing:Frequency 1.80e+02Hz, Mass 1.20e+00kg

DOI:10.3969/j.issn.1001-2400.2016.02.017

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20162302462755

Title:Near infrared quantum cutting of Tb3+-Yb3+co-doped CeF3nanophosphors

Authors:Sun, Xiao (1); Hu, Xiao-Yun (1, 2); Hou, Wen-Qian (3); Fan, Jun (3); Miao, Hui (1); Zhan, Su-Chang (1)

Author affiliation:(1) School of Physics, Northwest University, 710069, China; (2) State Key Laboratory of Transient Optics and Technology, Xi'an Institute of Optics and Precision Materials, Chinese Academy of Science, Xi'an; 710068, China; (3) School of Chemical Engineering, Xi'an; 710069, China

Corresponding author:Hu, Xiao-Yun

Source title:Journal of Nanoscience and Nanotechnology

Abbreviated source title:J. Nanosci. Nanotechnol.

Volume:16

Issue:4

Issue date:April 2016

Publication year:2016

Pages:3577-3582

Language:English

ISSN:15334880

E-ISSN:15334899

CODEN:JNNOAR

Document type:Journal article (JA)

Publisher:American Scientific Publishers

Abstract:In this paper, Tb3+-Yb3+Co-doped CeF3nanophosphors were synthesized using the microwave-assisted heating hydrothermal method (M-H). The excitation and emission spectra of the samples at room temperature show that the samples absorb ultraviolet light from 250 nm to 280 nm, and emit light at 300 nm. This corresponds to the transitions from5D to4F of Ce3+, 480 nm, 540 nm, 583 nm, 620 nm which correspond to the transitions from5D4to7F6, 5, 4, 3of Tb3+, 973 nm which corresponds to the transitions from2F5/2-2F7/2of Yb3+. In the emission spectra, it is clear that the emission intensity of Ce3+and Tb3+decreases, and Yb3+increases with increasing Yb3+. This suggests that energy transfer from Ce3+to Yb3+, and Ce3+to Tb3+to Yb3+may occur. In the near infrared emission area, it is noted that a distinct emission centered at 973 nm was observed under 260 nm excitation. This is due to transitions among the different Stark levels of2FJ(J=5/2, 7/2)Yb3+ions. This also suggests an energy transfer from Ce3+ions to Tb3+and then to Yb3+. The energy transfers from Tb3+-Yb3+Co-doped CeF3nanophosphors, which lead to intense NIR emissions at 900-1050 nm, match the energy of Si band gaps of Si-based solar cells. Therefore, these kinds of materials are promising candidates for applications that require modifying if solar spectrums and enhancement of conversion efficiency of Si-based solar cells. Copyright © 2016 American Scientific Publishers All rights reserved.

Number of references:10

Main heading:Infrared devices

Controlled terms:Emission spectroscopy - Energy gap - Energy transfer - Nanostructured materials - Silicon - Silicon solar cells - Solar cells

Uncontrolled terms:CeF3 - Energy transfer mechanisms - Excitation and emission spectra - Microwave assisted heating - Nanophosphors - Near Infrared - Near-infrared emissions - Si-based solar cells

Classification code:549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals - 702.3 Solar Cells - 761 Nanotechnology

Numerical data indexing:Size 2.50e-07m to 2.80e-07m, Size 2.60e-07m, Size 3.00e-07m, Size 4.80e-07m, Size 5.40e-07m, Size 5.83e-07m, Size 6.20e-07m, Size 9.00e-07m to 1.05e-06m, Size 9.73e-07m

DOI:10.1166/jnn.2016.11880

Funding Details: Number; Acronym; Sponsor: 21176199; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 51372201; NSFC; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20161302145233

Title:A discriminative representation for human action recognition

Authors:Yuan, Yuan (1); Zheng, Xiangtao (1, 2); Lu, Xiaoqiang (1)

Author affiliation:(1) Center for OPTical IMagery Analysis and Learning (OPTIMAL), State Key Laboratory of Transient Optics and Photonics, Xi׳an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi׳an, Shaanxi; 710119, China; (2) University of the Chinese Academy of Sciences, 19A Yuquanlu, Beijing; 100049, China

Corresponding author:Lu, Xiaoqiang(luxiaoqiang@opt.ac.cn)

Source title:Pattern Recognition

Abbreviated source title:Pattern Recogn.

Volume:59

Issue date:November 1, 2016

Publication year:2016

Pages:88-97

Language:English

ISSN:00313203

CODEN:PTNRA8

Document type:Journal article (JA)

Publisher:Elsevier Ltd

Abstract:Action recognition has been standing as an active research topic over the past years. Many efforts have been made and many methods have been proposed. However, there are still some challenges such as illumination condition, viewpoint, camera motion and cluttered background. In order to tackle these challenges, a discriminative representation is proposed by discovering key information of the input data. This task can be addressed by improvements of two major components: parameterized representation and discriminative classifier. The representation is parameterized with hidden variables and can be learned from training data. And the classifier can be trained to recognize actions based on the proposed representation. The contributions of this paper are as follows: (1) a novel probabilistic representation is utilized to capture the relative significant information of low level features; (2) a novel framework is proposed by combining the parameterized representation and discriminative classifier; (3) an alternating strategy is favorable to improve the performance of action recognition by updating the representation and the classifier alternatively. Experimental results on five well-known datasets demonstrate that the proposed method significantly improves the performance in action recognition. © 2016 Elsevier Ltd

Number of references:58

Main heading:Classification (of information)

Controlled terms:Classifiers - Gesture recognition - Maximum likelihood - Motion estimation - Parameterization

Uncontrolled terms:Action recognition - Cluttered backgrounds - Discriminative classifiers - Discriminative representation - Human-action recognition - Illumination conditions - Low-level features - Probabilistic representation

DOI:10.1016/j.patcog.2016.02.022

Funding Details: Number; Acronym; Sponsor: 61472413; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: LSIT201408; CAS; Chinese Academy of Sciences

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20163802813029

Title:Optical Bloch oscillations and Zener tunneling of Airy beams in ionic-type photonic lattices

Authors:Xiao, Fajun (1); Zhu, Weiren (2); Shang, Wuyun (1); Wang, Meirong (1); Zhang, Peng (4); Liu, Sheng (1); Premaratne, Malin (3); Zhao, Jianlin (1)

Author affiliation:(1) Key Laboratory of Space Applied Physics and Chemistry, Ministry of Education, Shaanxi Key Laboratory of Optical Information Technology, School of Science, Northwestern Polytechnical University, Xi'an; 710129, China; (2) Department of Electronic Engineering, Shanghai Jiao Tong University, Shanghai; 200240, China; (3) Advanced Computing and Simulation Laboratory (AχL), Department of Electrical and Computer Systems Engineering, Monash University, Clayton; VIC; 3800, Australia; (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

Source title:Optics Express

Abbreviated source title:Opt. Express

Volume:24

Issue:16

Issue date:August 8, 2016

Publication year:2016

Pages:18332-18339

Language:English

E-ISSN:10944087

Document type:Journal article (JA)

Publisher:OSA - The Optical Society

Abstract:We report on the existence of optical Bloch oscillations (OBOs) and Zener tunneling (ZT) of Airy beams in ionic-type photonic lattices with a refractive index ramp. Different from their counterparts in uniform lattices, Airy beams undergoing OBOs show an alternatively switched concave and convex trajectory as well as a periodical revival of input beam profiles. Moreover, the ionic-type photonic lattice established in photorefractive crystal exhibits a reconfigurable lattice structure, which provides a flexible way to tune the amplitude and period of the OBOs. Remarkably, it is demonstrated that the band gap of the lattice can be readily controlled by rotating the lattice inducing beam, which forces the ZT rate to follow two significant different decay curves amidst decreasing index gradient. Our results open up new possibilities for all-optical switching, routing and manipulation of Airy beams. © 2016 Optical Society of America.

Number of references:38

Main heading:Optical lattices

Controlled terms:Crystal structure - Energy gap - Optical switches - Photonics - Photorefractive crystals - Refractive index

Uncontrolled terms:Airy beams - All-optical switching - Beam profiles - Bloch oscillations - Decay curves - Lattice structures - Reconfigurable - Zener tunneling

Classification code:741 Light, Optics and Optical Devices - 744.8 Laser Beam Interactions - 933.1.1 Crystal Lattice

DOI:10.1364/OE.24.018344

Funding Details: Number; Acronym; Sponsor: DP140100883; ARC; Australian Research Council

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20163902843365

Title:Unsupervised 3D local feature learning by circle convolutional restricted boltzmann machine

Authors:Han, Zhizhong (1); Liu, Zhenbao (1); Han, Junwei (1); Vong, Chi-Man (2); Bu, Shuhui (1); Li, Xuelong (3)

Author affiliation:(1) Northwestern Polytechnical University, Shaanxi, Xi'an; 710072, China; (2) Dept. of Computer and Information Science, University of Macau, China; (3) Center for OPTical IMagery Analysis and Learning (OPTIMAL), State Key Laboratory of Transient Optics and Photonics, Xian Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xian, Shaanxi; 710119, China

Corresponding author:Liu, Zhenbao(liuzhenbao@nwpu.edu.cn)

Source title:IEEE Transactions on Image Processing

Abbreviated source title:IEEE Trans Image Process

Volume:PP

Issue:99

Issue date:2016

Publication year:2016

Article number:7559748

Language:English

ISSN:10577149

CODEN:IIPRE4

Document type:Journal article (JA)

Publisher:Institute of Electrical and Electronics Engineers Inc.

Abstract:Extracting local features from 3D shapes is an important and challenging task that usually requires carefully designed 3D shape descriptors. However, these descriptors are hand-crafted and require intensive human intervention with prior knowledge. To tackle this issue, we propose a novel deep learning model, namely Circle Convolutional Restricted Boltzmann Machine (CCRBM), for unsupervised 3D local feature learning. CCRBM is specially designed to learn from raw 3D representations. It effectively overcomes obstacles such as irregular vertex topology, orientation ambiguity on the 3D surface, and rigid or slightly non-rigid transformation invariance in the hierarchical learning of 3D data that cannot be resolved by the existing deep learning models. Specifically, by introducing the novel circle convolution, CCRBM holds a novel ring-like multilayer structure to learn 3D local features in a structure preserving manner. Circle convolution convolves across 3D local regions via rotating a novel circular sector convolution window in a consistent circular direction. In the process of circle convolution, extra points are sampled in each 3D local region and projected onto the tangent plane of the center of the region. In this way, the projection distances in each sector window are employed to constitute a novel local raw 3D representation called Projection Distance Distribution (PDD). In addition, to eliminate the initial location ambiguity of a sector window, the Fourier Transform Modulus (FTM) is used to transform the PDD into the Fourier domain which is then conveyed to CCRBM. Experiments using the learned local features are conducted on three aspects: global shape retrieval, partial shape retrieval, and shape correspondence. The experimental results show that the learned local features outperform other state-of-the-art 3D shape descriptors. © 1992-2012 IEEE.

Number of references:71

Main heading:Convolution

Controlled terms:Face recognition - Fourier transforms - Invariance - Metadata

Uncontrolled terms:3-D shape - Deep learning - Geometry processing - Projection distance - Restricted boltzmann machine

Classification code:716.1 Information Theory and Signal Processing - 921.3 Mathematical Transformations

DOI:10.1109/TIP.2016.2605920

Funding Details: Number; Acronym; Sponsor: 61473231; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 61522207; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 61573284; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 61672430; NSFC; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20163702788355

Title:An improved acute lymphoblastic leukemia image segmentation scheme based on HSV color space

Authors:Li, Yan (1, 2); Zhu, Rui (1); Mi, Lei (1); Cao, Yihui (1, 2); Yao, Di (3)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics Technology, Xi’an Institute of Optics, Precision Mechanics of Chinese Academy of Sciences, No. 17, Xinxi Road, New Industrial Park, Xi’an; 710119, China; (2) University of Chinese Academy of Sciences, No. 19, Yuquan Rd., Shijingshan District, Beijing; 100049, China; (3) Shenzhen Vivolight Medical Device and Technology Co. Ltd, Shenzhen; 518000, China

Source title:ICIC Express Letters, Part B: Applications

Abbreviated source title:ICIC Express Lett Part B Appl.

Volume:7

Issue:9

Issue date:September 1, 2016

Publication year:2016

Pages:1983-1989

Language:English

ISSN:21852766

Document type:Journal article (JA)

Publisher:ICIC Express Letters Office

Abstract:In this paper, an improved HSV color space based Acute Lymphoblastic Leukemia (ALL) image segmentation scheme is proposed to improve accuracy of segmentation on digital microscope color images, especially for those taken in non-uniform background illumination conditions and by a microscope with different magnifications. The proposed method has several steps including contrast stretching, color space transformation, threshold segmentation, morphological operations and median filtering. Adopting two thresholds is the innovation of this work. For performance evaluation, 260 ALL blood cell images from ALL IDB2-a public and free available blood sample dataset are used. The experimental results show the proposed method gets a higher accuracy in segmenting both high- and low- contrast blood cell images than the original HSV color space based single threshold method, showing a better prospect in subsequent automatic acute lymphoblastic leukemia feature extraction and classification. © 2016 ICIC International.

Number of references:29

Main heading:Image segmentation

Controlled terms:Blood - Cells - Color - Color image processing - Digital devices - Diseases - Feature extraction - Image processing - Mathematical morphology - Median filters

Uncontrolled terms:Acute lymphoblastic leukemia - Background illumination - Color space transformation - Feature extraction and classification - HSV color spaces - Morphological operations - Threshold segmentation - White blood cells

Classification code:461.2 Biological Materials and Tissue Engineering - 703.2 Electric Filters - 741.1 Light/Optics

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20163302705656

Title:Aberration correction for stimulated emission depletion microscopy with coherent optical adaptive technique

Authors:Yan, Wei (1, 2); Yang, Yanlong (3); Li, Yang (2); Peng, Xiao (1); Lin, Danying (1); Qu, Junle (1); Ye, Tong (2)

Author affiliation:(1) Key Laboratory of Optoelectronic Devices and Systems, College of Optoelectronic Engineering, Shenzhen University, Shenzhen; 518060, China; (2) Department of Bioengineering, Clemson University, MUSC Bioengineering Program, Charleston; SC; 29425, United States; (3) 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:Qu, Junle(jlqu@szu.edu.cn)

Source title:Progress in Biomedical Optics and Imaging - Proceedings of SPIE

Abbreviated source title:Progr. Biomed. Opt. Imaging Proc. SPIE

Volume:9717

Monograph title:Adaptive Optics and Wavefront Control for Biological Systems II

Issue date:2016

Publication year:2016

Article number:97170K

Language:English

ISSN:16057422

ISBN-13:9781628419511

Document type:Conference article (CA)

Conference name:Adaptive Optics and Wavefront Control for Biological Systems II

Conference date:February 13, 2016 - February 15, 2016

Conference location:San Francisco, CA, United states

Conference code:122924

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

Publisher:SPIE

Abstract:Stimulated emission depletion microscopy (STED) has become one of the powerful research tools in the field of superresolution microscopy. As its spatial resolution is gained by phase modulation of the light field, the aberrations produced by optical systems and specimens may have negative impact on the focusing properties of two beams, especially the STED beam, resulting in reduced spatial resolution. In thick samples, the aberration effect may play an even more critical role in affecting spatial resolution. Here, we report our recent effort in correcting the aberration in STED microscopy by using coherent optical adaptive technique (COAT) so that the resolution can be improved. © 2016 SPIE.

Number of references:12

Main heading:Adaptive optics

Controlled terms:Adaptive control systems - Biological systems - Image resolution - Light - Light modulators - Phase modulation - Stimulated emission - Wavefronts

Uncontrolled terms:Aberration correction - Adaptive technique - Focusing properties - Spatial light modulators - Spatial resolution - STED microscopies - Stimulated emission depletion microscopy - Super-resolution microscopy

Classification code:461.9 Biology - 711 Electromagnetic Waves - 731.1 Control Systems - 741.1 Light/Optics

DOI:10.1117/12.2211907

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20162802588788

Title:Local structure learning in high resolution remote sensing image retrieval

Authors:Du, Zhongxiang (1, 2); Li, Xuelong (1); Lu, Xiaoqiang (1)

Author affiliation:(1) Center for OPTical IMagery Analysis and Learning (OPTIMAL), State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, Shaanxi, PR China; (2) University of the Chinese Academy of Sciences, 19A Yuquanlu, Beijing 100049, PR China

Corresponding author:Li, Xuelong(xuelong_li@opt.ac.cn)

Source title:Neurocomputing

Abbreviated source title:Neurocomputing

Issue date:June 27, 2015

Publication year:2016

Language:English

ISSN:09252312

E-ISSN:18728286

CODEN:NRCGEO

Document type:Article in Press

Publisher:Elsevier

Abstract:High resolution remote sensing image captured by the satellites or the aircraft is of great help for military and civilian applications. In recent years, with an increasing amount of high resolution remote sensing images, it becomes more and more urgent to find a way to retrieve them. In this case, a few methods based on the statistical information of the local features are proposed, which have achieved good performances. However, most of the methods do not take the topological structure of the features into account. In this paper, we propose a new method to represent these images, by taking the structural information into consideration. The main contributions of this paper include: (1) mapping the features into a manifold space by a Lipschitz smooth function to enhance the representation ability of the features; (2) training an anchor set with several regularization constrains to get the intrinsic manifold structure. In the experiments, the method is applied to two challenging remote sensing image datasets: UC Merced land use dataset and Sydney dataset. Compared to the state-of-the-art approaches, the proposed method can achieve a more robust and commendable performance. © 2016 Elsevier B.V.

Main heading:Image retrieval

Controlled terms:Image reconstruction - Land use - Military applications - Military photography - Remote sensing - Space optics - Training aircraft

Uncontrolled terms:High resolution remote sensing images - Lipschitz - Manifold structures - Remote sensing images - State-of-the-art approach - Statistical information - Structural information - Topological structure

Classification code:403 Urban and Regional Planning and Development - 404.1 Military Engineering - 652.1 Aircraft, General - 656.1 Space Flight

DOI:10.1016/j.neucom.2016.05.061

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20153201158194

Title:Robust Semi-Supervised Subspace Clustering via Non-Negative Low-Rank Representation

Authors:Fang, Xiaozhao (1); Xu, Yong (1, 2); Li, Xuelong (3); Lai, Zhihui (1); Wong, Wai Keung (4, 5)

Author affiliation:(1) Bio-Computing Research Center, Shenzhen Graduate School, Harbin Institute of Technology, Shenzhen, Guangdong; 518055, China; (2) Key Laboratory of Network Oriented Intelligent Computation, Shenzhen, Guangdong; 518055, China; (3) Center for OPTical IMagery Analysis and Learning, 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; (4) Institute of Textiles and Clothing, Hong Kong Polytechnic University, Hong Kong; (5) Hong Kong Polytechnic University, Shenzhen Research Institute, Shenzhen; 518055, China

Corresponding author:Xu, Yong(yongxu@ymail.com)

Source title:IEEE Transactions on Cybernetics

Abbreviated source title:IEEE Trans. Cybern.

Volume:46

Issue:8

Issue date:August 2016

Publication year:2016

Pages:1828-1838

Article number:7175026

Language:English

ISSN:21682267

Document type:Journal article (JA)

Publisher:Institute of Electrical and Electronics Engineers Inc.

Abstract:Low-rank representation (LRR) has been successfully applied in exploring the subspace structures of data. However, in previous LRR-based semi-supervised subspace clustering methods, the label information is not used to guide the affinity matrix construction so that the affinity matrix cannot deliver strong discriminant information. Moreover, these methods cannot guarantee an overall optimum since the affinity matrix construction and subspace clustering are often independent steps. In this paper, we propose a robust semi-supervised subspace clustering method based on non-negative LRR (NNLRR) to address these problems. By combining the LRR framework and the Gaussian fields and harmonic functions method in a single optimization problem, the supervision information is explicitly incorporated to guide the affinity matrix construction and the affinity matrix construction and subspace clustering are accomplished in one step to guarantee the overall optimum. The affinity matrix is obtained by seeking a non-negative low-rank matrix that represents each sample as a linear combination of others. We also explicitly impose the sparse constraint on the affinity matrix such that the affinity matrix obtained by NNLRR is non-negative low-rank and sparse. We introduce an efficient linearized alternating direction method with adaptive penalty to solve the corresponding optimization problem. Extensive experimental results demonstrate that NNLRR is effective in semi-supervised subspace clustering and robust to different types of noise than other state-of-the-art methods. © 2015 IEEE.

Number of references:41

Main heading:Matrix algebra

Controlled terms:Cluster analysis - Clustering algorithms - Harmonic functions - Optimization

Uncontrolled terms:Alternating direction methods - Discriminant informations - Label information - Linear combinations - Low-rank representations - Optimization problems - State-of-the-art methods - Sub-Space Clustering

DOI:10.1109/TCYB.2015.2454521

Funding Details: Number; Acronym; Sponsor: 61233011; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 61332011; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 61370163; NSFC; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20153301174859

Title:Low-Rank Preserving Projections

Authors:Lu, Yuwu (1, 2); Lai, Zhihui (3, 4); Xu, Yong (2); Li, Xuelong (5); Zhang, David (6); Yuan, Chun (1)

Author affiliation:(1) Tsinghua-CUHK Joint Research Center for Media Sciences, Technologies and Systems, Graduate School at Shenzhen, Tsinghua University, Shenzhen; 518055, China; (2) Bio-Computing Research Center, Shenzhen Graduate School, Harbin Institute of Technology, Shenzhen; 518055, China; (3) College of Computer Science and Software Engineering, Shenzhen University, Shenzhen; 518055, China; (4) Institute of Textiles and Clothing, Hong Kong Polytechnic University, Hong Kong; (5) Center for OPTical IMagery Analysis and Learning, State Key Laboratory of Transient Optics and Photonics, Chinese Academy of Sciences, Xi'an; 710119, China; (6) Biometrics Research Center, Hong Kong Polytechnic University, Hong Kong

Corresponding author:Xu, Yong(yongxu@ymail.com)

Source title:IEEE Transactions on Cybernetics

Abbreviated source title:IEEE Trans. Cybern.

Volume:46

Issue:8

Issue date:August 2016

Publication year:2016

Pages:1900-1913

Article number:7182766

Language:English

ISSN:21682267

Document type:Journal article (JA)

Publisher:Institute of Electrical and Electronics Engineers Inc.

Abstract:As one of the most popular dimensionality reduction techniques, locality preserving projections (LPP) has been widely used in computer vision and pattern recognition. However, in practical applications, data is always corrupted by noises. For the corrupted data, samples from the same class may not be distributed in the nearest area, thus LPP may lose its effectiveness. In this paper, it is assumed that data is grossly corrupted and the noise matrix is sparse. Based on these assumptions, we propose a novel dimensionality reduction method, named low-rank preserving projections (LRPP) for image classification. LRPP learns a low-rank weight matrix by projecting the data on a low-dimensional subspace. We use the L21norm as a sparse constraint on the noise matrix and the nuclear norm as a low-rank constraint on the weight matrix. LRPP keeps the global structure of the data during the dimensionality reduction procedure and the learned low rank weight matrix can reduce the disturbance of noises in the data. LRPP can learn a robust subspace from the corrupted data. To verify the performance of LRPP in image dimensionality reduction and classification, we compare LRPP with the state-of-the-art dimensionality reduction methods. The experimental results show the effectiveness and the feasibility of the proposed method with encouraging results. © 2015 IEEE.

Number of references:51

Main heading:Image classification

Controlled terms:Computer vision - Data reduction - Face recognition - Matrix algebra - Pattern recognition

Uncontrolled terms:Dimensionality reduction - Dimensionality reduction method - Dimensionality reduction techniques - Global structure - Locality preserving projections - Low-dimensional subspace - Rank constraints - State of the art

DOI:10.1109/TCYB.2015.2457611

Funding Details: Number; Acronym; Sponsor: 61170253; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 61203376; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 61300032; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 61362031; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 61370163; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 61375012; NSFC; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20162502512485

Title:Spatiotemporal Statistics for Video Quality Assessment

Authors:Li, Xuelong (1); Guo, Qun (1); Lu, Xiaoqiang (1)

Author affiliation:(1) Center for OPTical IMagery Analysis and Learning (OPTIMAL), State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Xi'an , Shaanxi; 710119, China

Source title:IEEE Transactions on Image Processing

Abbreviated source title:IEEE Trans Image Process

Volume:25

Issue:7

Issue date:July 2016

Publication year:2016

Pages:3329-3342

Article number:7469872

Language:English

ISSN:10577149

CODEN:IIPRE4

Document type:Journal article (JA)

Publisher:Institute of Electrical and Electronics Engineers Inc.

Abstract:It is an important task to design models for universal no-reference video quality assessment (NR-VQA) in multiple video processing and computer vision applications. However, most existing NR-VQA metrics are designed for specific distortion types, which are not often aware in practical applications. A further deficiency is that the spatial and temporal information of videos is hardly considered simultaneously. In this paper, we propose a new NR-VQA metric based on the spatiotemporal natural video statistics in 3D discrete cosine transform (3D-DCT) domain. In the proposed method, a set of features are first extracted based on the statistical analysis of 3D-DCT coefficients to characterize the spatiotemporal statistics of videos in different views. These features are used to predict the perceived video quality via the efficient linear support vector regression model afterward. The contributions of this paper are: 1) we explore the spatiotemporal statistics of videos in the 3D-DCT domain that has the inherent spatiotemporal encoding advantage over other widely used 2D transformations; 2) we extract a small set of simple but effective statistical features for video visual quality prediction; and 3) the proposed method is universal for multiple types of distortions and robust to different databases. The proposed method is tested on four widely used video databases. Extensive experimental results demonstrate that the proposed method is competitive with the state-of-Art NR-VQA metrics and the top-performing full-reference VQA and reduced-reference VQA metrics. © 1992-2012 IEEE.

Number of references:51

Main heading:Video signal processing

Controlled terms:Computer vision - Discrete cosine transforms - Image coding - Regression analysis - Statistics

Uncontrolled terms:3D-DCT - natural video - No references - Spatio-temporal statistics - Video quality assessment

Classification code:716.4 Television Systems and Equipment - 723.5 Computer Applications - 921.3 Mathematical Transformations - 922.2 Mathematical Statistics

DOI:10.1109/TIP.2016.2568752

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20162702569229

Title:Infrared small target and background separation via column-wise weighted robust principal component analysis

Authors:Dai, Yimian (1); Wu, Yiquan (1, 2, 3, 4); Song, Yu (1)

Author affiliation:(1) College of Electronic and Information Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing; 211106, China; (2) Key Laboratory of Spectral Imaging Technology CAS, Xi'an Institute of Optics and Precision Mechanics of CAS, Xi'an; 710000, China; (3) State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu; 610500, China; (4) State Key Laboratory of Marine Geology, Tongji University, Shanghai; 200092, China

Corresponding author:Dai, Yimian(dym@nuaa.edu.cn)

Source title:Infrared Physics and Technology

Abbreviated source title:Infrared Phys Technol

Volume:77

Issue date:July 1, 2016

Publication year:2016

Pages:421-427

Language:English

ISSN:13504495

CODEN:IPTEEY

Document type:Journal article (JA)

Publisher:Elsevier

Abstract:When facing extremely complex infrared background, due to the defect of l1norm based sparsity measure, the state-of-the-art infrared patch-image (IPI) model would be in a dilemma where either the dim targets are over-shrinked in the separation or the strong cloud edges remains in the target image. In order to suppress the strong edges while preserving the dim targets, a weighted infrared patch-image (WIPI) model is proposed, incorporating structural prior information into the process of infrared small target and background separation. Instead of adopting a global weight, we allocate adaptive weight to each column of the target patch-image according to its patch structure. Then the proposed WIPI model is converted to a column-wise weighted robust principal component analysis (CWRPCA) problem. In addition, a target unlikelihood coefficient is designed based on the steering kernel, serving as the adaptive weight for each column. Finally, in order to solve the CWPRCA problem, a solution algorithm is developed based on Alternating Direction Method (ADM). Detailed experiment results demonstrate that the proposed method has a significant improvement over the other nine classical or state-of-the-art methods in terms of subjective visual quality, quantitative evaluation indexes and convergence rate. © 2016 Elsevier B.V.

Number of references:42

Main heading:Principal component analysis

Controlled terms:Image processing - Infrared imaging - Quality control - Separation

Uncontrolled terms:Alternating direction methods - Image modeling - Infrared small targets - Quantitative evaluation - Robust principal component analysis - Solution algorithms - State-of-the-art methods - Target and background

Classification code:746 Imaging Techniques - 802.3 Chemical Operations - 913.3 Quality Assurance and Control - 922.2 Mathematical Statistics

DOI:10.1016/j.infrared.2016.06.021

Funding Details: Number; Acronym; Sponsor: 61573183; NSFC; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20162102427159

Title:Free-form optical elements corrected aberrations of optical system

Authors:Pang, Zhihai (1); Fan, Xuewu (1); Ma, Zhen (1); Zou, Gangyi (1)

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

Source title:Guangxue Xuebao/Acta Optica Sinica

Abbreviated source title:Guangxue Xuebao

Volume:36

Issue:5

Issue date:May 10, 2016

Publication year:2016

Article number:0522001

Language:Chinese

ISSN:02532239

CODEN:GUXUDC

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:The optical element of free-form surface can be expressed by the fringe Zernike polynomial and the terms of initial spherical sag, coma and astigmatism are transformed into the vector forms. Based on the vector wave aberration theory, the free-form optical element characteristic of optical system initial aberration correction is analyzed. Through the analysis, the free-form surfaces in optical system have different aberration emendation specialties at different positions. The free-form optical element can be corrected in full field of view for constant initial aberration as a stop aperture (entrance pupil or exit pupil) in optical system. When the free-form surface is far from the stop aperture of optical system, due to the scaling and offset of the imaging beam aperture for an off-axis field point, the free-form surface can correcte the asymmetric initial aberration, and the relationship of different initial aberration and field of view is different. © 2016, Chinese Lasers Press. All right reserved.

Number of references:11

Page count:7

Main heading:Optical systems

Controlled terms:Aberrations - Adaptive optics - Optical design - Surface measurement

Uncontrolled terms:Aberration correction - Entrance pupil - Exit pupil - Field of views - Field points - Free-form surface - Vector waves - Zernike polynomials

Classification code:741.1 Light/Optics - 741.3 Optical Devices and Systems - 943.2 Mechanical Variables Measurements

DOI:10.3788/AOS201636.0522001

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20154201386148

Title:Dual-clustering-based hyperspectral band selection by contextual analysis

Authors:Yuan, Yuan (1); Lin, Jianzhe (1); Wang, Qi (2)

Author affiliation:(1) Center for OPTical IMagery Analysis and Learning (OPTIMAL), State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, China; (2) School of Computer Science and the Center, OPTical IMagery Analysis and Learning (OPTIMAL), Northwestern Polytechnical University, Xi'an, China

Corresponding author:Wang, Qi(crabwq@nwpu.edu.cn)

Source title:IEEE Transactions on Geoscience and Remote Sensing

Abbreviated source title:IEEE Trans Geosci Remote Sens

Volume:54

Issue:3

Issue date:March 1, 2016

Publication year:2016

Pages:1431-1445

Article number:7295589

Language:English

ISSN:01962892

CODEN:IGRSD2

Document type:Journal article (JA)

Publisher:Institute of Electrical and Electronics Engineers Inc.

Abstract:Hyperspectral image (HSI) involves vast quantities of information that can help with the image analysis. However, this information has sometimes been proved to be redundant, considering specific applications such as HSI classification and anomaly detection. To address this problem, hyperspectral band selection is viewed as an effective dimensionality reduction method that can remove the redundant components of HSI. Various HSI band selection methods have been proposed recently, and the clustering-based method is a traditional one. This agglomerative method has been considered simple and straightforward, while the performance is generally inferior to the state of the art. To tackle the inherent drawbacks of the clustering-based band selection method, a new framework concerning on dual clustering is proposed in this paper. The main contribution can be concluded as follows: 1) a novel descriptor that reveals the context of HSI efficiently; 2) a dual clustering method that includes the contextual information in the clustering process; 3) a new strategy that selects the cluster representatives jointly considering the mutual effects of each cluster. Experimental results on three real-world HSIs verify the noticeable accuracy of the proposed method, with regard to the HSI classification application. The main comparison has been conducted among several recent clustering-based band selection methods and constraint-based band selection methods, demonstrating the superiority of the technique that we present. © 1980-2012 IEEE.

Number of references:51

Main heading:Classification (of information)

Controlled terms:Cluster analysis - Clustering algorithms - Spectroscopy

Uncontrolled terms:Agglomerative methods - Anomaly detection - Clustering process - Contextual analysis - Contextual information - Dimensionality reduction method - Hyperspectral images - State of the art

DOI:10.1109/TGRS.2015.2480866

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20161702289255

Title:Effect of different parameters on machining of SiC/SiC composites via pico-second laser

Authors:Li, Weinan (1); Zhang, Ruoheng (1); Liu, Yongsheng (2); Wang, Chunhui (2); Wang, Jing (2); Yang, Xiaojun (1); Cheng, Laifei (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, China; (2) Science and Technology on Thermostructure Composite Materials Laboratory, Northwestern Polytechnical University, Xi'an; Shaanxi, China

Corresponding author:Liu, Yongsheng(yongshengliu@nwpu.edu.cn)

Source title:Applied Surface Science

Abbreviated source title:Appl Surf Sci

Volume:364

Issue date:February 28, 2016

Publication year:2016

Pages:378-387

Language:English

ISSN:01694332

CODEN:ASUSEE

Document type:Journal article (JA)

Publisher:Elsevier

Abstract:Pico-second laser plays an important role in modern machining technology, especially in machining high hardness materials. In this article, pico-second laser was utilized for irradiation on SiC/SiC composites, and effects of different processing parameters including the machining modes and laser power were discussed in detail. The results indicated that the machining modes and laser power had great effect on machining of SiC/SiC composites. Different types of surface morphology and structure were observed under helical line scanning and single ring line scanning, and the analysis of their formulation was discussed in detail. It was believed that the machining modes would be responsible to the different shapes of machining results at the same parameters. The processing power shall also influence the surface morphology and quality of machining results. In micro-hole drilling process, large amount of debris and fragments were observed within the micro-holes, and XPS analysis showed that there existed Si-O bonds and Si-C bonds, indicating that the oxidation during processing was incomplete. Other surface morphology, such as pores and pits were discussed as well. © 2015 Elsevier B.V. All rights reserved.

Number of references:28

Main heading:X ray photoelectron spectroscopy

Controlled terms:Morphology - Scanning electron microscopy - Silicon carbide - Surface morphology

Uncontrolled terms:Different shapes - High hardness materials - Laser process - Machining technology - Morphology and structures - Picosecond laser - Processing parameters - SiC/SiC composites

Classification code:804.2 Inorganic Compounds - 951 Materials Science

DOI:10.1016/j.apsusc.2015.12.089

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20160701935595

Title:Design of thermal vacuum quasi-accelerated life test for space two-axis gimbal

Authors:Shangguan, Ai-Hong (1, 2); Zhang, Hao-Su (1, 2); Wang, Chen-Jie (1, 3); Qin, De-Jin (1); Liu, Zhao-Hui (1)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics of CAS, Xi'an, China; (2) University of Chinese Academy of Sciences, Beijing, China; (3) Key Laboratory of Thermo-fluid Science and Engineering of MOE, Xi'an Jiaotong University, Xi'an, China

Source title:Jilin Daxue Xuebao (Gongxueban)/Journal of Jilin University (Engineering and Technology Edition)

Abbreviated source title:Jilin Daxue Xuebao (Gongxueban)

Volume:46

Issue:1

Issue date:January 1, 2016

Publication year:2016

Pages:186-192

Language:Chinese

ISSN:16715497

CODEN:JDXGAH

Document type:Journal article (JA)

Publisher:Editorial Board of Jilin University

Abstract:The domestic and abroad thermal vacuum quasi-accelerated life tests of two-axis gimbals are investigated. It is shown that almost all the tests are focused on the parts rather than on a full gimbal, which can not reflect the performance of the full gimbal. According to the analysis of the structure and lubrication mode of the thermal vacuum quasi-accelerated life tests of two-axis gimbals, the five main elements and their design methods are determined. The test contents and methods are designed for the motion performance examination of a full gimbal, and the failure criterion is given to control the test process. A thermal vacuum quasi-accelerated life test is designed in accordance with the design method of the element design method. A series of test data about the motion performance of the two-axis gimbal is acquired by experiments, which can evaluate the in-orbit life of the space two-axis gimbal. The in-orbit application of the obtained results demonstrate that the designed thermal vacuum quasi-accelerated life test method for the space two-axis gimbal can satisfy the test requirement and it is effective and feasible. © 2016, Editorial Board of Jilin University. All right reserved.

Number of references:6

Main heading:Testing

Controlled terms:Design - Orbits

Uncontrolled terms:Experimental technology of aerocraft - Life-tests - Quasi-accelerated - Thermal vacuum - Two-axis

DOI:10.13229/j.cnki.jdxbgxb201601028

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20160301806178

Title:The degree of polarization modeling with different shapes of the satellite

Authors:Yao, Dalei (1, 2, 3); Xue, Jianru (3); Wen, Desheng (1); Qiu, Yuehong (1); Xi, Jiangbo (1, 2); Wen, Yan (1); Chen, Zhi (1)

Author affiliation:(1) Xi'An Institute of Optics and Precision Mechanics of CAS, Xi'an, China; (2) University of Chinese Academy of Sciences, Beijing, China; (3) Xi'An Jiaotong University, Xi'an, China

Corresponding author:Yao, Dalei(ydl198206@sina.com)

Source title:Optik

Abbreviated source title:Optik

Volume:127

Issue:4

Issue date:February 1, 2016

Publication year:2016

Pages:1860-1866

Language:English

ISSN:00304026

Document type:Journal article (JA)

Publisher:Elsevier GmbH

Abstract:Polarization is one of the important characteristics of the interaction between light and substance, which relates to the shape and the material of the target. To research the effects of the degree of polarization (DOP) caused by different materials, the polarized bidirectional reflectance distribution function (pBRDF) model has been established by the theory of microfacet. But in this model, the scattering effect of polyhedron is ignored. Based on these researches, the DOP model of satellite with different shapes (cuboid, cylinder and sphere) is set up and simulated. The simulating results show that the DOP of satellite relates with the complex refractive index, shape of satellite, incident angle and view angle. It is also proved that the polarization is a reflection of the characteristics of material, shape of satellite, which provides theoretical support for identifying satellite. © 2015 Elsevier GmbH.

Number of references:12

Main heading:Satellites

Controlled terms:Distribution functions - Polarization - Refractive index

Uncontrolled terms:Bidirectional reflectance distribution functions - Complex refractive index - Degree of polarization - Different shapes - Incident angles - Microfacets - Scattering effects - View angles

Classification code:655.2 Satellites - 741.1 Light/Optics - 922.1 Probability Theory

DOI:10.1016/j.ijleo.2015.09.172

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20161202118789

Title:Cooled Dyson long-wave infrared push-broom imaging spectrometer by re-imaging

Authors:Sun, Jiayin (1, 2); Liu, Ying (1); Jiang, Yang (1); Li, Chun (1); Sun, Qiang (1); Hu, Xinrong (3)

Author affiliation:(1) Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, Jilin, China; (2) Grduate University of Chinese Academy of Sciences, Beijing, China; (3) Xian Institute of Optics and Precision Mechanics of CAS, Xian, China

Corresponding author:Sun, Jiayin(superjiayin@outlook.com)

Source title:Optics Communications

Abbreviated source title:Opt Commun

Volume:367

Issue date:May 15, 2016

Publication year:2016

Pages:274-278

Language:English

ISSN:00304018

CODEN:OPCOB8

Document type:Journal article (JA)

Publisher:Elsevier

Abstract:A cooled long-wave infrared push-broom imaging spectrometer with an F-number of 2 was designed based on the Dyson configuration. A three-mirror off-axis aspherical optical system that provided excellent slit-shaped images was selected as the fore telescope objective. The re-imaging method was applied to obtain a cold stop efficiency of 100%, and the corrector lens in traditional Dyson imaging spectrometers was replaced with re-imaging lenses to correct spherical aberrations. The designed imaging spectrometer provided a spectral resolution of 25 nm at a range of 8-12 μm and possessed a relatively small volume. © 2016 Elsevier B.V. All rights reserved.

Number of references:14

Main heading:Infrared radiation

Controlled terms:Infrared devices - Optical systems - Spectrometers

Uncontrolled terms:Aspherical optical systems - Cold stop - Dyson configuration - Imaging lens - Imaging method - Imaging spectrometers - Long wave infrared - Spherical aberrations

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

DOI:10.1016/j.optcom.2016.01.067

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20161202118965

Title:Broadband antireflective double-layer mesoporous silica coating with strong abrasion-resistance for solar cell glass

Authors:Wang, Jing (1, 4); Yang, Chunming (3); Liu, Yi (3); Zhang, Ce (1, 4); Zhang, Cong (1, 4); Wang, Mengchao (1, 4); Zhang, Jing (1, 4); Cui, Xinmin (1, 4); Ding, Ruimin (1); Xu, Yao (2)

Author affiliation:(1) Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan; Shanxi, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; Shaanxi, China; (3) Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, China; (4) University of Chinese Academy of Sciences, Beijing, China

Corresponding author:Ding, Ruimin

Source title:RSC Advances

Abbreviated source title:RSC Adv.

Volume:6

Issue:30

Issue date:2016

Publication year:2016

Pages:25191-25197

Language:English

E-ISSN:20462069

CODEN:RSCACL

Document type:Journal article (JA)

Publisher:Royal Society of Chemistry

Abstract:To enhance the efficiency of solar cells, a broadband double-layer antireflective (AR) coating with excellent transmittance and abrasion-resistance, was successfully fabricated using two layer mesoporous silica coatings. Both layers were prepared via a solvent evaporation self-assembly method in which the top- and bottom-layer mesoporous silica coatings used Pluronic F127 and cetyltrimethylammonium bromide (CTAB) as templates, respectively. The grazing incidence small angle X-ray scattering (GISAXS) and the transmission electron microscope (TEM) results indicated that the mesopores in the double-layer AR coating belonged to a Fmmm orthorhombic symmetry structure of the SBA-16 in the top layer and a P6/mmc 3D-hexagonal structure of the MCM-41 in the bottom layer. The solar-weighted average transmittance (TPV) of the broadband AR coating is approximately 99.10% on quartz, 98.62% on borosilicate glass, and 98.55% on K9 glass in the solar spectrum range of 300-2400 nm. By introducing broadband AR coating, the overall power conversion efficiency (η) of the solar cell showed an increase of 1.23% for quartz, 1.31% for borosilicate glass, and 1.37% for K9 glass. Meanwhile, the double-layer AR coating had excellent mechanical stability; the TPVvalue of coating after abrasion by CS-10F wearaser only decreased 0.16% on quartz, 0.29% on borosilicate glass and K9 glass. The pencil hardness of the double-layer AR coating was found to be 6H. © The Royal Society of Chemistry 2016.

Number of references:36

Main heading:Borosilicate glass

Controlled terms:Abrasion - Coatings - Efficiency - Mechanical stability - Mesoporous materials - Quartz - Self assembly - Silica - Solar cells - Transmission electron microscopy - Tribology - Wear resistance - X ray scattering

Uncontrolled terms:Anti reflective coatings - Broadband AR coatings - Cetyltrimethylammonium bromide - Grazing incidence small-angle X-ray scattering - Orthorhombic symmetry - Overall power conversion efficiency - Self-assembly method - Solvent evaporation

Classification code:482.2 Minerals - 702.3 Solar Cells - 812.3 Glass - 813.2 Coating Materials - 913.1 Production Engineering - 931 Classical Physics; Quantum Theory; Relativity - 931.2 Physical Properties of Gases, Liquids and Solids - 932.1 High Energy Physics - 951 Materials Science

DOI:10.1039/c6ra02281b

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:4889660

Title:Generation of multiphoton entangled quantum states by means of integrated frequency combs

Authors:Reimer, Christian (1); Kues, Michael (1); Roztocki, Piotr (1); Wetzel, Benjamin (1, 2); Grazioso, Fabio (1); Little, Brent E. (3); Chu, Sai T. (4); Johnston, Tudor (1); Bromberg, Yaron (5, 9); Caspani, Lucia (6, 10); Moss, David J. (7, 11); Morandotti, Roberto (1, 8)

Author affiliation:(1) Institut National de la Recherche Scientifique, Énergie Matériaux Télécommunications, 1650 Boulevard Lionel-Boulet, Varennes; QC, Canada; (2) Department of Physics and Astronomy, University of Sussex, Falmer, Brighton, United Kingdom; (3) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Science, Xi'an, China; (4) Department of Physics and Materials Science, City University of Hong Kong, Tat Chee Avenue, Hong Kong, Hong Kong; (5) Department of Applied Physics, Yale University, New Haven; CT, United States; (6) School of Engineering and Physical Sciences, Heriot-Watt University, Edinburgh, United Kingdom; (7) School of Electrical and Computer Engineering, RMIT University, Melbourne; VA, Australia; (8) Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu, China; (9) Racah Institute of Physics, Hebrew University of Jerusalem, Jerusalem, Israel; (10) Institute of Photonics, Department of Physics, University of Strathclyde, Glasgow, United Kingdom; (11) Center for Micro-Photonics, Swinburne University of Technology, Hawthorn; VA, Australia

Corresponding author:Kues, Michael(michael.kues@emt.inrs.ca)

Source title:Science

Abbreviated source title:Science

Volume:351

Issue:6278

Issue date:March 11, 2016

Publication year:2016

Pages:1176-1180

Language:English

ISSN:00368075

E-ISSN:10959203

CODEN:SCIEAS

Document type:Journal article (JA)

Publisher:American Association for the Advancement of Science

Abstract:Complex optical photon states with entanglement shared among several modes are critical to improving our fundamental understanding of quantum mechanics and have applications for quantum information processing, imaging, and microscopy. We demonstrate that optical integrated Kerr frequency combs can be used to generate several bi-and multiphoton entangled qubits, with direct applications for quantum communication and computation. Our method is compatible with contemporary fiber and quantum memory infrastructures and with chip-scale semiconductor technology, enabling compact, low-cost, and scalable implementations. The exploitation of integrated Kerr frequency combs, with their ability to generate multiple, customizable, and complex quantum states, can provide a scalable, practical, and compact platform for quantum technologies.

Number of references:31

Controlled terms:computer system - exploitation - information and communication technology - memory - optical instrument - quantum mechanics - technological change

Classification code:901 Geobase: Related Topics

DOI:10.1126/science.aae0509

Database:GEOBASE

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20162502529806

Title:Influence of three-point-mount-induced deformation for a three-mirror-anastigmatic telescope on its astigmatic field

Authors:Zou, Gangyi (1, 2); Fan, Xuewu (1); Pang, Zhihai (1); Wang, Chenchen (1, 2); Li, Ruichang (1, 2)

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

Source title:Guangxue Xuebao/Acta Optica Sinica

Abbreviated source title:Guangxue Xuebao

Volume:36

Issue:6

Issue date:June 10, 2016

Publication year:2016

Article number:0622002

Language:Chinese

ISSN:02532239

CODEN:GUXUDC

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:In order to improve the efficiency of alignment for a three-mirror-anastigmatic (TMA) telescope with large aperture, the influence of three point mount induced (TPMI) deformation on its astigmatic field distribution in the aligning process is analyzed. Based on the vector aberration theory and aperture coordinate transformation, the astigmatic field distribution characters for the aligned and misaligned TMA telescope are analyzed with TPMI deformation on mirrors located at or away from the aperture stop. Finally, the surface error due to TPMI deformation is simulated by the optical design software CODE V using Z10and Z11, the terms of fringe Zernike polynomial. The characteristic field distribution of astigmatism is verified by the real-ray-tracing method. The results indicate that the astigmatic field distributions are not affected when the TPMI deformation is on the primary mirror (aperture stop), and it shows different characteristic field distributions when the TPMI deformation is on the secondary or tertiary mirror (not aperture stop) for the aligned or misaligned telescope because of producing astigmatism with the field conjugated and field linear. The aligning state of TMA telescope can be qualitatively analyzed by its astigmatic field distribution at the final aligning stage, which is quite instructive for the alignment of TMA telescopes with large aperture. © 2016, Chinese Lasers Press. All right reserved.

Number of references:17

Page count:8

Main heading:Telescopes

Controlled terms:Deformation - Mirrors - Optical design - Ray tracing

Uncontrolled terms:Aperture coordinates - Astigmatic field - Field distribution - Optical-design software - Primary mirrors - Real ray tracing - Vector aberration - Zernike polynomials

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

DOI:10.3788/AOS201636.0622002

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20162502529803

Title:Spatiotemporal evolution of the light field inside the microresonator with normal dispersion

Authors:Xu, Xin (1); Hu, Xiaohong (1); Feng, Ye (1); Liu, Yuanshan (1); Wang, Yishan (1); Wei, Ruyi (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) Key Laboratory of Spectral Imaging Technology, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; Shaanxi; 710119, China

Corresponding author:Liu, Yuanshan(liuyuanshan@opt.ac.cn)

Source title:Guangxue Xuebao/Acta Optica Sinica

Abbreviated source title:Guangxue Xuebao

Volume:36

Issue:6

Issue date:June 10, 2016

Publication year:2016

Article number:0619001

Language:Chinese

ISSN:02532239

CODEN:GUXUDC

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:Based on the Lugiato-Lefever equation, the spatiotemporal evolutions in microresonator are discussed respectively, which is pumped by the continuous wave (CW) light as well as the combination of CW light and periodical pulse train simultaneously, and the effect of each parameter on light field is studied. Simulation results indicate that the dark soliton can exist in the microresonator with CW pumped. The width of the dark soliton pulse increases with the dispersion coefficient. The shape of the dark soliton pulse is varied when the frequency detuning is increased. Meanwhile, in the normal dispersion regime, the pulses can form in the microresonator by the use of synthetical pumping manner. The drawback is compensated that the bright soliton pulse is difficult to be generated in the microresonator for single CW pumped of certain parameters configuration. Moreover, the high amplitude of the pump pulses leads to the pulse split, the pulse stretching and the loss of the pulse occur when the frequency detuning of the microresonator rises. Theoretical analysis results are significant for high-quality Kerr optical frequency comb and their practical applications, and they are helpful for selecting the proper microresonator and pump parameters. © 2016, Chinese Lasers Press. All right reserved.

Number of references:22

Page count:8

Main heading:Optical pumping

Controlled terms:Dispersion (waves) - Light - Nonlinear equations - Nonlinear optics - Resonators - Solitons

Uncontrolled terms:Continuous wave lights - Dispersion coefficient - Light fields - Lugiato-Lefever equation - Micro resonators - Optical frequency combs - Parameters configuration - Spatiotemporal evolution

Classification code:741.1 Light/Optics - 741.1.1 Nonlinear Optics

DOI:10.3788/AOS201636.0619001

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:4934104

Title:Implementation of dispersion-free slow acoustic wave propagation and phase engineering with helical-structured metamaterials

Authors:Zhu, Xuefeng (1, 2, 3); Li, Kun (1); Zhang, Peng (4); Zhu, Jie (5); Zhang, Jintao (1); Tian, Chao (6); Liu, Shengchun (1, 6)

Author affiliation:(1) College of Physical Science and Technology, Heilongjiang University, Harbin; 150080, China; (2) Department of Physics, Huazhong University of Science and Technology, Wuhan; 430074, China; (3) Innovation Institute, Huazhong University of Science and Technology, Wuhan; 430074, China; (4) State Key Laboratory of Transient Optics and Photonics, Chinese Academy of Sciences, Xi'an; 710119, China; (5) Department of Mechanical Engineering, Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong; (6) Department of Biomedical Engineering, University of Michigan, Ann Arbor; MI; 48109, United States

Corresponding author:Liu, Shengchun(liushengchun@hlju.edu.cn)

Source title:Nature Communications

Abbreviated source title:Nat. Commun.

Volume:7

Issue date:May 20, 2016

Publication year:2016

Article number:11731

Language:English

E-ISSN:20411723

Document type:Journal article (JA)

Publisher:Nature Publishing Group, Houndmills, Basingstoke, Hampshire, RG21 6XS, United Kingdom

Abstract:The ability to slow down wave propagation in materials has attracted significant research interest. A successful solution will give rise to manageable enhanced wave-matter interaction, freewheeling phase engineering and spatial compression of wave signals. The existing methods are typically associated with constructing dispersive materials or structures with local resonators, thus resulting in unavoidable distortion of waveforms. Here we show that, with helical-structured acoustic metamaterials, it is now possible to implement dispersion-free sound deceleration. The helical-structured metamaterials present a non-dispersive high effective refractive index that is tunable through adjusting the helicity of structures, while the wavefront revolution plays a dominant role in reducing the group velocity. Finally, we numerically and experimentally demonstrate that the helical-structured metamaterials with designed inhomogeneous unit cells can turn a normally incident plane wave into a self-Accelerating beam on the prescribed parabolic trajectory. The helical-structured metamaterials will have profound impact to applications in explorations of slow wave physics.

Number of references:51

Controlled terms:acoustic wave - compression - experimental study - numerical method - refractive index - research work - wave propagation - waveform analysis

Classification code:901 Geobase: Related Topics

DOI:10.1038/ncomms11731

Funding Details: Number; Acronym; Sponsor: 11274099; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 11404125; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 11574389; NSFC; National Natural Science Foundation of China

Database:GEOBASE

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20162402489937

Title:Influence of temperature on “Smile” in high power diode laser bars

Authors:Wang, Shu-Na (1); Zhang, Pu (1); Xiong, Ling-Ling (1); Nie, Zhi-Qiang (1); Wu, Di-Hai (1); Liu, Xing-Sheng (1, 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) Focuslight Technologies Co., LTD, Xi'an; 710077, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:45

Issue:5

Issue date:May 1, 2016

Publication year:2016

Article number:0514001

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:By the numerical modeling and experimental test, the influence of temperature on “smile” was studied. By using the finite element method, the thermal stresses induced during bar bonding and operating process were simulated respectively. In simulations, it is assumed that the deformation of the laser bar is only caused by the thermal stress. The simulated results show that the thermal stress across the laser bar decreases with the increasing of heatsink temperature. As thus, the curve of the laser bar induced by packaging thermal stress will decrease with the increasing of the temperature. In this experiment, “smile” of five samples from the same wafer and batch was measured under different heatsink temperatures. Experimental results show that “smile” of the five samples increases or decreases as heatsink temperature increasing. The possible reason which is related with the combined action between the primitive bending shape of the bare bar and the mounting thermal stress. If the bare bar before packaging is flat or convex, “smile” of the diode laser bar will decrease as the heatsink temperature increasing. In addition, if the bare bar is concave and the laser bar is still concave after packaging, “smile” will increase with the increasing of heatsink temperature. © 2016, Science Press. All right reserved.

Number of references:16

Page count:6

Main heading:Finite element method

Controlled terms:Diodes - Heat sinks - Lasers - Power semiconductor diodes - Semiconductor lasers - Temperature - Thermal stress

Uncontrolled terms:Combined actions - Diode laser array - Diode laser bar - Experimental test - High power diode laser - Laser bar - Operating process - Simulated results

Classification code:616.1 Heat Exchange Equipment and Components - 641.1 Thermodynamics - 744.1 Lasers, General - 744.4.1 Semiconductor Lasers - 921.6 Numerical Methods - 931.2 Physical Properties of Gases, Liquids and Solids

DOI:10.3788/gzxb20164505.0514001

Funding Details: Number; Acronym; Sponsor: 61334010; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 61404172; NSFC; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20162302456302

Title:Wave-front coded super-resolution imaging technique

Authors:Zhao, Hui (1); Wei, Jingxuan (2); Pang, Zhihai (1); Liu, Meiying (1)

Author affiliation:(1) Space Optics Lab Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (2) School of Computer Science and Technology, Xidian University, Xi'an; 710071, China

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

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

Volume:45

Issue:4

Issue date:April 25, 2016

Publication year:2016

Article number:0422003

Language:Chinese

ISSN:10072276

Document type:Journal article (JA)

Publisher:Chinese Society of Astronautics

Abstract:Wave-front coding is a classical computational imaging technique and famous for its capability in extending the depth of focus (DOF) of incoherent imaging system. In fact, besides the DOF extension, this technique has the potentials in realizing super-resolution imaging, which is rare to be investigated in existing literatures. On the one hand, the introduction of phase mask makes defocus invariance of optical transfer function (OTF) possible and the dramatic decrease of modulus of OTF alleviates the aliasing effect owned by most digital imaging systems. In this case, a better image data suitable for super-resolution imaging could be provided. On the other hand, the prominent expansion of point spread function (PSF) allows us to obtain the real sampled PSF corresponding to any specific pitch size in a digital way using the ideal continuous optical PSF whose sampling interval could be considered as unlimitedly small. Therefore, based on these two characteristics, an amplification based single image super-resolution reconstruction algorithm was especially designed for wave-front coded imaging system and an experimental prototype camera has been fabricated to verify the effectiveness of the algorithm. The results demonstrate that the extended DOF which is more than 20 times original DOF has been obtained and at least 3X super-resolution reconstruction effect could be achieved. Besides that, the quality of reconstructed image approaches the diffraction limited level. © 2016, Editorial Board of Journal of Infrared and Laser Engineering. All right reserved.

Number of references:28

Page count:10

Main heading:Image reconstruction

Controlled terms:Image processing - Image resolution - Imaging systems - Imaging techniques - Light polarization - Optical design - Optical resolving power - Optical transfer function - Wavefronts

Uncontrolled terms:Computational imaging - Depth of focus - Quality of reconstructed images - Single-image super-resolution reconstruction - Super resolution - Super resolution imaging - Super resolution reconstruction - Wave-front coding

Classification code:741.1 Light/Optics - 746 Imaging Techniques

DOI:10.3788/IRLA201645.0422003

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20153601242356

Title:Spatiochromatic Context Modeling for Color Saliency Analysis

Authors:Zhang, Jun (1); Wang, Meng (1); Zhang, Shengping (2); Li, Xuelong (3); Wu, Xindong (1, 4)

Author affiliation:(1) School of Computer Science and Information Engineering, Hefei University of Technology, Hefei; 230009, China; (2) School of Computer Science and Technology, Harbin Institute of Technology, Weihai; 264209, China; (3) State Key Laboratory of Transient Optics and Photonics, Center for Optical Imagery Analysis and Learning, Xi'An Institute of Optics and Precision Mechanics, Xi'an; 710119, China; (4) Department of Computer Science, University of Vermont, Burlington; VT; 05405, United States

Source title:IEEE Transactions on Neural Networks and Learning Systems

Abbreviated source title:IEEE Trans. Neural Networks Learn. Sys.

Volume:27

Issue:6

Issue date:June 2016

Publication year:2016

Pages:1177-1189

Article number:7222459

Language:English

ISSN:2162237X

E-ISSN:21622388

Document type:Journal article (JA)

Publisher:Institute of Electrical and Electronics Engineers Inc.

Abstract:Visual saliency is one of the most noteworthy perceptual abilities of human vision. Recent progress in cognitive psychology suggests that: 1) visual saliency analysis is mainly completed by the bottom-up mechanism consisting of feedforward low-level processing in primary visual cortex (area V1) and 2) color interacts with spatial cues and is influenced by the neighborhood context, and thus it plays an important role in a visual saliency analysis. From a computational perspective, the most existing saliency modeling approaches exploit multiple independent visual cues, irrespective of their interactions (or are not computed explicitly), and ignore contextual influences induced by neighboring colors. In addition, the use of color is often underestimated in the visual saliency analysis. In this paper, we propose a simple yet effective color saliency model that considers color as the only visual cue and mimics the color processing in V1. Our approach uses region-/boundary-defined color features with spatiochromatic filtering by considering local color-orientation interactions, therefore captures homogeneous color elements, subtle textures within the object and the overall salient object from the color image. To account for color contextual influences, we present a divisive normalization method for chromatic stimuli through the pooling of contrary/complementary color units. We further define a color perceptual metric over the entire scene to produce saliency maps for color regions and color boundaries individually. These maps are finally globally integrated into a one single saliency map. The final saliency map is produced by Gaussian blurring for robustness. We evaluate the proposed method on both synthetic stimuli and several benchmark saliency data sets from the visual saliency analysis to salient object detection. The experimental results demonstrate that the use of color as a unique visual cue achieves competitive results on par with or better than 12 state-of-the-art approaches. © 2015 IEEE.

Number of references:87

Main heading:Color

Controlled terms:Image segmentation - Object recognition - Visualization

Uncontrolled terms:Chromatic stimuli - Cognitive psychology - Normalization methods - Orientation interaction - Perceptual metrics - Primary visual cortex - Salient object detection - State-of-the-art approach

DOI:10.1109/TNNLS.2015.2464316

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20162202437322

Title:Pixel-to-Model Distance for Robust Background Reconstruction

Authors:Yang, Lu (1); Cheng, Hong (1); Su, Jianan (1); Li, Xuelong (2)

Author affiliation:(1) Center for Robotics, University of Electronic Science and Technology of China, Chengdu; 611731, China; (2) State Key Laboratory of Transient Optics and Photonics, Center for OPTical IMagery Analysis and Learning, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China

Corresponding author:Cheng, Hong(hcheng@uestc.edu.cn)

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

Abbreviated source title:IEEE Trans Circuits Syst Video Technol

Volume:26

Issue:5

Issue date:May 2016

Publication year:2016

Pages:903-916

Article number:7088578

Language:English

ISSN:10518215

CODEN:ITCTEM

Document type:Journal article (JA)

Publisher:Institute of Electrical and Electronics Engineers Inc.

Abstract:Background information is crucial for many video surveillance applications such as object detection and scene understanding. In this paper, we present a novel pixel-to-model (P2M) paradigm for background modeling and restoration in surveillance scenes. In particular, the proposed approach models the background with a set of context features for each pixel, which are compressively sensed from local patches. We determine whether a pixel belongs to the background according to the minimum P2M distance, which measures the similarity between the pixel and its background model in the space of compressive local descriptors. The pixel feature descriptors of the background model are properly updated with respect to the minimum P2M distance. Meanwhile, the neighboring background model will be renewed according to the maximum P2M distance to handle ghost holes. The P2M distance plays an important role of background reliability in the 3-D spatial-temporal domain of surveillance videos, leading to the robust background model and recovered background videos. We applied the proposed P2M distance for foreground detection and background restoration on synthetic and real-world surveillance videos. Experimental results show that the proposed P2M approach outperforms the state-of-the-art approaches both in indoor and outdoor surveillance scenes. © 2015 IEEE.

Number of references:78

Main heading:Object detection

Controlled terms:Image segmentation - Monitoring - Object recognition - Pixels - Restoration - Security systems

Uncontrolled terms:Background information - Background model - Background reconstruction - Descriptors - Spatial temporal domain - State-of-the-art approach - Video surveillance - Video-surveillance applications

Classification code:723.2 Data Processing and Image Processing - 914.1 Accidents and Accident Prevention

DOI:10.1109/TCSVT.2015.2424052

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20161702289073

Title:Planar waveguides in neodymium-doped calcium niobium gallium garnet crystals produced by proton implantation

Authors:Liu, Chun-Xiao (1); Chen, Meng (1); Fu, Li-Li (2); Zheng, Rui-Lin (1); Guo, Hai-Tao (3); Zhou, Zhi-Guang (3); Li, Wei-Nan (3); Lin, She-Bao (4); Wei, Wei (1)

Author affiliation:(1) School of Optoelectronic Engineering, Nanjing University of Posts and Telecommunications, Nanjing, China; (2) College of Electronic Science and Engineering, Nanjing University of Posts and Telecommunications, Nanjing, China; (3) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, China; (4) Institute of Physics and Optoelectronics Technology, Baoji University of Arts and Sciences, Baoji, China

Corresponding author:Liu, Chun-Xiao(cxliu0816@sina.com)

Source title:Chinese Physics B

Abbreviated source title:Chin. Phys.

Volume:25

Issue:4

Issue date:April 2016

Publication year:2016

Article number:044211

Language:English

ISSN:16741056

Document type:Journal article (JA)

Publisher:Institute of Physics Publishing

Abstract:In this work, the fabrication and optical properties of a planar waveguide in a neodymium-doped calcium niobium gallium garnet (Nd:CNGG) crystal are reported. The waveguide is produced by proton (H+) implantation at 480 keV and a fluence of 1.01017ions/cm2. The prism-coupling measurement is performed to obtain the dark mode of the waveguide at a wavelength of 632.8 nm. The reflectivity calculation method (RCM) is used to reconstruct the refractive index profile. The finite-difference beam propagation method (FD-BPM) is employed to calculate the guided mode profile of the waveguide. The stopping and range of ions in matter 2010 (SRIM 2010) code is used to simulate the damage profile induced by the ion implantation. The experimental and theoretical results indicate that the waveguide can confine the light propagation. © 2016 Chinese Physical Society and IOP Publishing Ltd.

Number of references:20

Main heading:Light propagation

Controlled terms:Beam propagation method - Calcium - Garnets - Ion implantation - Ions - Laser optics - Neodymium - Niobium - Optical properties - Optical waveguides - Planar waveguides - Refractive index - Waveguides

Uncontrolled terms:Damage profiles - Finite-difference beam propagation method - Garnet crystals - Neodymium doped - Prism-coupling measurements - Proton implantation - Refractive index profiles - Stopping and range of ions in matters

Classification code:547.2 Rare Earth Metals - 549.2 Alkaline Earth Metals - 549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals - 711 Electromagnetic Waves - 714.3 Waveguides - 741 Light, Optics and Optical Devices - 741.1 Light/Optics - 921 Mathematics

DOI:10.1088/1674-1056/25/4/044211

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20151400711792

Title:Shape-Constrained Sparse and Low-Rank Decomposition for Auroral Substorm Detection

Authors:Yang, Xi (1); Gao, Xinbo (1); Tao, Dacheng (2); Li, Xuelong (3); Han, Bing (4); Li, Jie (4)

Author affiliation:(1) State Key Laboratory of Integrated Services Networks, School of Electronic Engineering, Xidian University, Xi'an, China; (2) Centre for Quantum Computation and Intelligent Systems, Faculty of Engineering and Information Technology, University of Technology, Sydney, 81 Broadway Street, Ultimo; NSW, Australia; (3) Center for OPTical IMagery Analysis and Learning (OPTIMAL), State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, China; (4) Video and Image Processing System Laboratory, School of Electronic Engineering, Xidian University, Xi'an, China

Source title:IEEE Transactions on Neural Networks and Learning Systems

Abbreviated source title:IEEE Trans. Neural Networks Learn. Sys.

Volume:27

Issue:1

Issue date:January 2016

Publication year:2016

Pages:32-46

Article number:7070710

Language:English

ISSN:2162237X

E-ISSN:21622388

Document type:Journal article (JA)

Publisher:Institute of Electrical and Electronics Engineers Inc.

Abstract:An auroral substorm is an important geophysical phenomenon that reflects the interaction between the solar wind and the Earth's magnetosphere. Detecting substorms is of practical significance in order to prevent disruption to communication and global positioning systems. However, existing detection methods can be inaccurate or require time-consuming manual analysis and are therefore impractical for large-scale data sets. In this paper, we propose an automatic auroral substorm detection method based on a shape-constrained sparse and low-rank decomposition (SCSLD) framework. Our method automatically detects real substorm onsets in large-scale aurora sequences, which overcomes the limitations of manual detection. To reduce noise interference inherent in current SLD methods, we introduce a shape constraint to force the noise to be assigned to the low-rank part (stationary background), thus ensuring the accuracy of the sparse part (moving object) and improving the performance. Experiments conducted on aurora sequences in solar cycle 23 (1996-2008) show that the proposed SCSLD method achieves good performance for motion analysis of aurora sequences. Moreover, the obtained results are highly consistent with manual analysis, suggesting that the proposed automatic method is useful and effective in practice. © 2015 IEEE.

Number of references:66

Main heading:Interference suppression

Controlled terms:Magnetosphere - Solar energy

Uncontrolled terms:Automatic method - Detection methods - Earth's magnetosphere - Geophysical phenomena - Large scale data sets - Noise interference - Shape constraints - Sparse and low ranks

DOI:10.1109/TNNLS.2015.2411613

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20161202115003

Title:Non-invasive investigation of microstructure of ding kiln porcelain with optical coherence tomography

Authors:Yang, Shanshan (1, 2); Mi, Lei (1); Zhu, Rui (1, 2); Liu, Haiping (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, China; (2) University of Chinese Academy of Sciences, Beijing, China

Corresponding author:Zhu, Rui(rzhu@vivo-light.com)

Source title:Zhongguo Jiguang/Chinese Journal of Lasers

Abbreviated source title:Zhongguo Jiguang

Volume:43

Issue:2

Issue date:February 10, 2016

Publication year:2016

Article number:0208002

Language:Chinese

ISSN:02587025

CODEN:ZHJIDO

Document type:Journal article (JA)

Publisher:Science Press

Abstract:Optical coherence tomography (OCT) is a non-destructive subsurface tomography system based on low coherence interferometry. Non-invasive nature and high speed of acquisition of OCT make it possible to image relic and provide subsurface morphology visualization. Porcelain from Ding kiln of Northern Song Dynasty is scanned and imaged to visualize the subsurface morphology of the surface glaze and core. Layer structures and interfaces can be visualized clearly from OCT images. The characteristics of the thickness of the glaze layer, bubbles and crystal particles in glaze, the penetration depth of OCT in porcelain are analyzed. © 2016, Chinese Laser Press. All right reserved.

Number of references:25

Page count:7

Main heading:Optical tomography

Controlled terms:Crystallography - Glazes - Imaging systems - Kilns - Porcelain - Tomography

Uncontrolled terms:Core - Crystal particles - Glaze layers - High Speed - Layer structures - Low coherence interferometry - Non destructive - Tomography system

Classification code:642.2 Industrial Furnaces and Components - 741.3 Optical Devices and Systems - 746 Imaging Techniques - 812.1 Ceramics - 813.2 Coating Materials - 933.1 Crystalline Solids

DOI:10.3788/CJL201643.0208002

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20161402193829

Title:Design of Fiber Bragg Grating automatic analysis test system based on LabVIEW

Authors:Liu, Chun-Tong (1); Li, Hong-Cai (1); He, Zhen-Xin (1); Wu, Guo-Jun (2)

Author affiliation:(1) the Second Artillery Engineering University, Xi'an, China; (2) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:45

Issue:2

Issue date:February 1, 2016

Publication year:2016

Article number:0206002

Language:English

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:For the purpose of realizing the Fiber Bragg Grating (FBG) sensing system automated test and analysis, a friendly interface of FBG sensing test system based on LabVIEW was designed by using the remote control port of Q8384 spectrometer. The strain/force integrated tester was used for tension test of a steel beam with embedded FBG packaged, the experiment data was acquired and analyzed by LabVIEW automatic testing platform, the results were in line with the design expectations, and the system realized the real-time monitoring and data storage capabilities. The tested device is easy to manage, and the direct operation on spectrometer is avoided, which can extend the service life of the spectrometer. © 2016, Science Press. All right reserved.

Number of references:19

Page count:7

Main heading:Fiber Bragg gratings

Controlled terms:Automatic testing - Bragg gratings - Digital storage - Remote control - Remote sensing - Spectrometers - Steel testing - Tensile testing

Uncontrolled terms:Automated test - Automatic analysis - Data storage capability - Experiment data - LabViEW - Real time monitoring - Sensing systems - Tested devices

Classification code:545.3 Steel - 722.1 Data Storage, Equipment and Techniques - 731.1 Control Systems - 741.3 Optical Devices and Systems

DOI:10.3788/gzxb20164502.0206002

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20161502231076

Title:Corrigendum to 'Material research on the InGaAs-emitting-layer VECSEL grown on GaAs substrate' [Mater. Sci. Semicond. Process. 42 (2016) 283-287]

Authors:Lin, Tao (1); Sun, Ruijuan (1); Sun, Hang (1); Guo, Enmin (1); Duan, Yupeng (2); Lin, Nan (3); Ma, Xiaoyu (3); Wang, Yonggang (4)

Author affiliation:(1) Department of Electronic Engineering, Xi'an University of Technology, Xi'an, China; (2) Department of Physics, Northwest University, Xi'an, China; (3) Institute of Semiconductors, Chinese Academy of Sciences, Beijing, China; (4) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, China

Source title:Materials Science in Semiconductor Processing

Abbreviated source title:Mater Sci Semicond Process

Volume:47

Issue date:June 1, 2016

Publication year:2016

Pages:86

Language:English

ISSN:13698001

Document type:Journal article (JA)

Publisher:Elsevier Ltd

Number of references:2

DOI:10.1016/j.mssp.2016.03.030

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20162002399630

Title:Optical waveform monitoring based on a free-running mode-locked femtosecond fibre laser and four-wave mixing in a highly nonlinear fibre

Authors:Liu, Y. (1); Zhang, J.-G. (2); Tang, D. (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, Shaanxi; 710119, China; (2) Biomedical Engineering and Communications Research Group, School of Engineering, London South Bank University, 103 Borough Road, London; SE1 0AA, United Kingdom; (3) Southwest China Research Institute of Electronic Equipment, Chengdu; 610036, China

Source title:Opto-electronics Review

Abbreviated source title:Opto-electron. Rev.

Volume:24

Issue:2

Issue date:June 1, 2016

Publication year:2016

Pages:62-74

Language:English

ISSN:12303402

E-ISSN:18963757

Document type:Journal article (JA)

Publisher:De Gruyter Open Ltd

Abstract:Optical sampling based on ultrafast optical nonlinearities is a useful technique to monitor the waveforms of ultrashort optical pulses. In this paper, we present a new implementation of optical waveform sampling systems by employing our newly constructed free-running mode-locked fibre laser with a tunable repetition rate and a low timing jitter, an all-optical waveform sampler with a highly nonlinear fibre (HNLF), and our developed computer algorithm for optical waveform display and measurement, respectively. Using a femtosecond fibre laser to generate the highly stable optical sampling pulses and exploiting the four-wave mixing effect in a 100m-long HNLF, we successfully demonstrate the all-optical waveform sampling of a 10GHz optical clock pulse sequence with a pulse width of 1.8 ps and a 80Gbit/s optical data signal, respectively. The experimental results show that waveforms of the tested optical pulse signals are accurately reproduced with a pulse width of 2.0 ps. This corresponds to a temporal resolution of 0.87 ps for optical waveform measurement. Moreover, the optical eye diagram of a 10Gbit/s optical data signal with a 1.8 ps pulse width is also accurately measured by employing our developed optical sampling system. © 2016 by Walter de Gruyter Berlin/Boston.

Number of references:22

Main heading:Nonlinear optics

Controlled terms:Algorithms - Fiber lasers - Fibers - Four wave mixing - Laser pulses - Locks (fasteners) - Mode-locked fiber lasers - Optical data processing - Signal sampling - Timing jitter - Ultrashort pulses

Uncontrolled terms:All-optical waveforms - Eye diagrams - Femtosecond fibre lasers - Highly non-linear fibres - Optical nonlinearity - Optical sampling - Optical waveform - Ultrashort optical pulse

Classification code:723.2 Data Processing and Image Processing - 741.1.1 Nonlinear Optics - 744.1 Lasers, General - 744.4 Solid State Lasers

Numerical data indexing:Bit_Rate 1.00e+10bit/s, Frequency 1.00e+10Hz, Time 2.00e-12s, Time 8.70e-13s, Bit_Rate 8.00e+10bit/s, Time 1.80e-12s

DOI:10.1515/oere-2016-0010

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20163602781445

Title:Two side liquid-cooled and passively Q-switched disk oscillator with nanosheets in flowing CCl

Authors:Nie, Rongzhi (1, 2); She, Jiangbo (1); Li, Dongdong (4); Li, Fuli (2); Peng, Bo (1, 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), Xi’an; 710119, China; (2) School of Science, Xi’an Jiaotong University, Xi’an; 710119, China; (3) Key Laboratory for Organic Electronics and Information Displays, Institute of Advanced Materials (IAM), Nanjing University of Posts and Telecommunications, Nanjing; Jiangsu; 210046, China; (4) School of Electronic Engineering, Xi’an University of Post and Telecommunications, Xi’an; 710121, China

Corresponding author:She, Jiangbo(shejb@opt.ac.cn)

Source title:Applied Physics B: Lasers and Optics

Abbreviated source title:Appl Phys B

Volume:122

Issue:9

Issue date:September 1, 2016

Publication year:2016

Article number:241

Language:English

ISSN:09462171

CODEN:APBOEM

Document type:Journal article (JA)

Publisher:Springer Verlag

Abstract:A passively Q-switched and two side liquid-cooled Nd:YAG disk oscillator is demonstrated, which is operated at a pump pulse width of 300 μs and a pump repetition rate of 10 Hz. The coolant flows over the two large surfaces of the disk and will be passed through by laser beam, so it can also serve as a saturable absorber. For the unmodulated laser, the pure CCl4was employed as coolant and a plane output mirror of 15 % transmission was employed. The maximum output energy of 795 mJ is realized corresponding to the optical–optical efficiency of 27.4 % and the slope efficiency of 30 %; for the graphene Q-switched laser, the CCl4with graphene nanosheets was employed as coolant and a plane output mirror of 40 % transmission was employed. The maximum output energy of 376 mJ is realized corresponding to the optical–optical efficiency of 13 % and the slope efficiency of 18 %. The maximum average Q-switching repetition rate is 385 kHz, and the minimum average pulse width is 116 ns; for the MoS2Q-switched laser, the CCl4with MoS2nanosheets was employed as coolant and a plane output mirror of 30 % transmission was employed. The maximum output energy of 486 mJ is realized corresponding to the optical–optical efficiency of 17 % and the slope efficiency of 22 %.The maximum average Q-switching repetition rate is 470 kHz, and the minimum average pulse width is 137 ns. © 2016, Springer-Verlag Berlin Heidelberg.

Number of references:21

Main heading:Q switching

Controlled terms:Absorption refrigeration - Coolants - Energy efficiency - Graphene - Laser beams - Laser mirrors - Mirrors - Molybdenum compounds - Nanosheets - Optical pumping - Pulse repetition rate - Q switched lasers - Saturable absorbers

Uncontrolled terms:Graphene nanosheets - Large surfaces - Optical efficiency - Output mirrors - Passively Q-switched - Pump pulse width - Repetition rate - Slope efficiencies

Classification code:525.2 Energy Conservation - 644.1 Refrigeration Methods - 741.3 Optical Devices and Systems - 744.1 Lasers, General - 744.8 Laser Beam Interactions - 761 Nanotechnology - 803 Chemical Agents and Basic Industrial Chemicals - 804 Chemical Products Generally - 933 Solid State Physics

DOI:10.1007/s00340-016-6519-4

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20163102664178

Title:Optical trapping force and torque on spheroidal Rayleigh particles with arbitrary spatial orientations

Authors:Li, Manman (1, 2); Yan, Shaohui (1); Yao, Baoli (1); Liang, Yansheng (1); Han, Guoxia (1); Zhang, Peng (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) University of Chinese Academy of Sciences, Beijing; 100049, China

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:33

Issue:7

Issue date:July 1, 2016

Publication year:2016

Pages:1341-1347

Language:English

ISSN:10847529

E-ISSN:15208532

CODEN:JOAOD6

Document type:Journal article (JA)

Publisher:OSA - The Optical Society

Abstract:We investigate the spatial orientation dependence of optical trapping forces and intrinsic torques exerted on spheroidal Rayleigh particles under irradiation of highly focused linearly and circularly polarized beams. It is revealed that the maximal trapping forces and torques strongly depend on the orientation of the spheroid, and the spheroidal particle is driven to be stably trapped at the beam focus with its major axis perpendicular to the optical axis. For a linearly polarized trapping beam, the optical torque is always perpendicular to the plane containing the major axis and the polarization direction of the incident beam. Therefore, the spheroid tends to rotate its major axis along with the polarization direction. However, for a circularly polarized trapping beam, the optical torque is always perpendicular to the plane containing the major axis and the optical axis. What is different from the linear polarization case is that the spheroid tends to have the major axis parallel to the projection of the major axis in the transverse plane. The optical torque in the circular polarization case is half of that in the linear polarization case. These optical trapping properties may be exploited in practical optical manipulation, especially for the nonspherical particle's trapping. © 2016 Optical Society of America.

Number of references:33

Main heading:Optical properties

Controlled terms:Circular polarization - Flight dynamics - Polarization - Torque

Uncontrolled terms:Circularly polarized - Circularly polarized beam - Nonspherical particle - Optical manipulation - Optical trapping force - Polarization direction - Spatial orientations - Spheroidal particles

Classification code:711 Electromagnetic Waves - 741.1 Light/Optics - 931.2 Physical Properties of Gases, Liquids and Solids

DOI:10.1364/JOSAA.33.001341

Funding Details: Number; Acronym; Sponsor: 11474352; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 11574389; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 61205123; NSFC; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20162502522383

Title:Analysis and calibration of precision for point source transmittance system

Authors:Li, Zhao-Hui (1, 2); Zhao, Jian-Ke (1); Xu, Liang (1); Liu, Feng (1); Guo, Yi (1); Liu, Kai (1); Zhao, Qing (1, 2)

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

Corresponding author:Li, Zhao-Hui(lizhaohui@opt.cn)

Source title:Wuli Xuebao/Acta Physica Sinica

Abbreviated source title:Wuli Xuebao

Volume:65

Issue:11

Issue date:June 5, 2016

Publication year:2016

Article number:114206

Language:Chinese

ISSN:10003290

CODEN:WLHPAR

Document type:Journal article (JA)

Publisher:Institute of Physics, Chinese Academy of Sciences

Abstract:Owing to space optical system working for a long time outside the field of view, where there is strong background radiation, and the fact that the point source transmittance (PST) is an important evaluation indicator for stray light suppression of this optical system, the development of stray light equipment for testing PST has received more and more attention. Though the development of PST testing system has been extensively studied, none of them elaborate on the calibration of the PST testing system. Besides, most of the PST testing systems are at a laboratory research stage, and the calibration of neither testing stability nor accuracy is recognized. Therefore, on the basis of the PST testing system established, one calibration lens is designed to calibrate the PST testing system. By comparing the measured PST values of the calibration lens with the analyzed values, the PST testing system can be evaluated. The calibration lens model is built to analyze PST values at different off-axis angles by using the ray tracing software Tracepro. We consider the accuracy of modeling, and on the basis of simplifying the structure design, we measure bidirectional reflectance distribution function values of the painted surface of the calibration lens, and then estimate values of lens surface fromHarvey-Shack model and PSD theory by taking these property data into the model of simulation. Ultimately PST analyzed values of calibration lens can be obtained. Finally, by comparing the measured values of calibration lens, which are tested by using PST testing system, with the analyzed values, the calibration of the PST testing system is completed. In the PST testing process of calibration lens, by analyzing the data at different off-axis angles, the accuracy of repeated measurements and threshold of PST testing system can be obtained. At the same time, testing errors caused by the stability of light source, detector linearity, air scattering and structure of double cylindrical chamber are analyzed through the testing data. The data show that when double cylindrical chamber clean class is ISO 7, the PST threshold of this equipment is 10-8, and the accuracy of repeated measurements is 7.9%. Taking into account the detection capability, the PST threshold of this equipment is 10-10when environmental condition is better than ISO 6. © 2016 Chinese Physical Society.

Number of references:14

Page count:7

Main heading:Calibration

Controlled terms:Distribution functions - Equipment - Light sources - Optical systems - Ray tracing - Stray light

Uncontrolled terms:Bidirectional reflectance distribution functions - Cylindrical chambers - Environmental conditions - Evaluation indicators - Point sources - Precision - Repeated measurements - Stray light suppression

Classification code:741.1 Light/Optics - 741.3 Optical Devices and Systems - 901 Engineering Profession - 922.1 Probability Theory

DOI:10.7498/aps.65.114206

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20162402499945

Title:Theoretical and experimental analysis of excessively tilted fiber gratings

Authors:Yan, Zhijun (1, 2); Wang, Hushan (1); Wang, Changle (2); Sun, Zhongyuan (2); Yin, Guolu (2); Zhou, Kaiming (1, 2); Wang, Yishan (1); Zhao, Wei (1); Zhang, Lin (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) Institute of Photonic and Technologies, Aston University, Birmingham; B4 7ET, United Kingdom

Source title:Optics Express

Abbreviated source title:Opt. Express

Volume:24

Issue:11

Issue date:May 30, 2016

Publication year:2016

Pages:12107-12115

Language:English

E-ISSN:10944087

Document type:Journal article (JA)

Publisher:OSA - The Optical Society

Abstract:We have theoretically and experimentally investigated the dual-peak feature of tilted fiber gratings with excessively tilted structure (named as Ex-TFGs). We have explained the dual-peak feature by solving eigenvalue equations for TM0mand TE0mof a circular waveguide, in which the TE (transverse electric) and TM (transverse magnetic) core modes are coupled into TE and TM cladding modes, respectively. Meanwhile, in the experiment, we have verified that one of the dual peaks at the shorter wavelength is due to the TM mode coupling whereas the other one at the longer wavelength arises from TE mode coupling when a linearly polarized light launched into the Ex-TFG. We have also investigated the peak separation of TE and TM cladding mode for different surrounding medium refractive indexes (SRI), revealed that the dual peaks separation is decreasing as increasing of SRI, which agrees very well with the theoretical analysis results. ©2016 Optical Society of America.

Number of references:31

Main heading:Refractive index

Controlled terms:Circular waveguides - Eigenvalues and eigenfunctions

Uncontrolled terms:Eigenvalue equations - Experimental analysis - Linearly polarized light - Peak separations - Shorter wavelength - Tilted fiber gratings - Transverse electrics - Transverse magnetic

Classification code:714.3 Waveguides - 741.1 Light/Optics

DOI:10.1364/OE.24.012107

Funding Details: Acronym; Sponsor: NSFC; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20162402491389

Title:A method of removing reflected highlight on images based on polarimetric imaging

Authors:Yang, Fanchao (1, 2); Tang, Xingjia (1); Hu, Bingliang (1); Wei, Ruyi (1); Kong, Liang (1); Li, Yong (1)

Author affiliation:(1) Key Laboratory of Spectral Imaging Technology, Xi'An Institute of Optics and Precision Mechanic, Chinese Academy of Sciences, Xi'an; 710119, China; (2) University of Chinese Academy of Sciences, Beijing; 10049, China

Corresponding author:Yang, Fanchao(frankyang1987@126.com)

Source title:Journal of Sensors

Abbreviated source title:J. Sensors

Volume:2016

Issue date:2016

Publication year:2016

Article number:9537320

Language:English

ISSN:1687725X

E-ISSN:16877268

Document type:Journal article (JA)

Publisher:Hindawi Publishing Corporation, 410 Park Avenue, 15th Floor, 287 pmb, New York, NY 10022, United States

Abstract:A method of removing reflected highlight is proposed on polarimetric imaging. Polarization images (0°, 45°, 90°, and 135°) and the reflection angle are required in this reflected light removal algorithm. This method is based on the physical model of reflection and refraction, and no additional image processing algorithm is necessary in this algorithm. Compared to traditional polarization method with single polarizer, restricted observation angle of Brewster is not demanded and multiple reflection areas of different polarization orientations can be removed simultaneously. Experimental results, respectively, demonstrate the features of this reflected light removal algorithm, and it can be considered very suitable in polarization remote sensing. © 2016 Fanchao Yang et al.

Number of references:13

Main heading:Polarization

Controlled terms:Algorithms - Image processing - Polarimeters - Remote sensing

Uncontrolled terms:Image processing algorithm - Multiple reflections - Polarimetric imaging - Polarization images - Polarization method - Polarization orientation - Reflection and refractions - Removal algorithms

Classification code:941.3 Optical Instruments

DOI:10.1155/2016/9537320

Funding Details: Number; Acronym; Sponsor: 11327303; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 11573058; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 61405239; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 61501456; NSFC; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20153001069683

Title:High-Order Energies for Stereo Segmentation

Authors:Peng, Jianteng (1); Shen, Jianbing (1); Li, Xuelong (2)

Author affiliation:(1) Beijing Laboratory of Intelligent Information Technology, School of Computer Science, Beijing Institute of Technology, Beijing; 100081, China; (2) Center for OPTical IMagery Analysis and Learning (OPTIMAL), State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China

Corresponding author:Shen, Jianbing(shenjianbing@bit.edu.cn)

Source title:IEEE Transactions on Cybernetics

Abbreviated source title:IEEE Trans. Cybern.

Volume:46

Issue:7

Issue date:July 2016

Publication year:2016

Pages:1616-1627

Article number:7164318

Language:English

ISSN:21682267

Document type:Journal article (JA)

Publisher:Institute of Electrical and Electronics Engineers Inc.

Abstract:In this paper, we propose a novel segmentation approach for stereo images using the high-order energy optimization, which utilizes the disparity maps and statistical information of stereo images to enrich the high-order potential functions. To the best of our knowledge, our approach is the first one to formulate the problem of stereo segmentation as a high-order energy optimization problem, which simultaneously segments the foreground objects in left and right images using the proposed high-order potential function. A new method for designing the penalty function in our high-order term is proposed by the corresponding pixels and their neighboring pixels between left and right images. The relationships of stereo correspondence by disparity maps are further employed to enhance the connections between the left and right stereo images. Experimental results demonstrate that the proposed approach can effectively improve the performance of two kinds of stereo segmentation, including the automatic saliency-aware stereocut and the interactive stereo segmentation with user scribbles. © 2015 IEEE.

Number of references:41

Main heading:Stereo image processing

Controlled terms:Image segmentation - Optimization - Pixels

Uncontrolled terms:Disparity map - Foreground objects - High-order - High-order potentials - Penalty function - Statistical information - Stereo correspondences - Stereo-image

DOI:10.1109/TCYB.2015.2453091

Funding Details: Number; Acronym; Sponsor: 61272359; NSFC; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20162702554803

Title:A numerical algorithm to evaluate the transient response for a synchronous scanning streak camera using a time-domain Baum–Liu–Tesche equation

Authors:Pei, Chengquan (1); Tian, Jinshou (2); Wu, Shengli (1); He, Jiai (3); Liu, Zhen (1)

Author affiliation:(1) Key Laboratory for Physical Electronics and Devices of the Ministry of Education, Xi'an Jiaotong University, Xi'an; 710049, China; (2) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (3) School of Computer and Communication, Lanzhou University of Technology, Lanzhou; Gansu; 730050, China

Corresponding author:Wu, Shengli(slwu@mail.xjtu.edu.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:832

Issue date:October 1, 2016

Publication year:2016

Pages:8-14

Language:English

ISSN:01689002

CODEN:NIMAER

Document type:Journal article (JA)

Publisher:Elsevier

Abstract:The transient response is of great influence on the electromagnetic compatibility of synchronous scanning streak cameras (SSSCs). In this paper we propose a numerical method to evaluate the transient response of the scanning deflection plate (SDP). First, we created a simplified circuit model for the SDP used in an SSSC, and then derived the Baum–Liu–Tesche (BLT) equation in the frequency domain. From the frequency-domain BLT equation, its transient counterpart was derived. These parameters, together with the transient-BLT equation, were used to compute the transient load voltage and load current, and then a novel numerical method to fulfill the continuity equation was used. Several numerical simulations were conducted to verify this proposed method. The computed results were then compared with transient responses obtained by a frequency-domain/fast Fourier transform (FFT) method, and the accordance was excellent for highly conducting cables. The benefit of deriving the BLT equation in the time domain is that it may be used with slight modifications to calculate the transient response and the error can be controlled by a computer program. The result showed that the transient voltage was up to 1000 V and the transient current was approximately 10 A, so some protective measures should be taken to improve the electromagnetic compatibility. © 2016 Elsevier B.V.

Number of references:20

Main heading:Power quality

Controlled terms:Algorithms - Electromagnetic compatibility - Frequency domain analysis - Numerical methods - Scanning - Streak cameras - Time domain analysis - Transient analysis - Transients

Uncontrolled terms:Continuity equations - Frequency domains - Novel numerical methods - Numerical algorithms - Protective measures - Synchronous scanning - Transient current - Transient voltage

Classification code:706.1.2 Electric Power Distribution - 711.1 Electromagnetic Waves in Different Media - 742.2 Photographic Equipment - 921 Mathematics

DOI:10.1016/j.nima.2016.06.061

Funding Details: Number; Acronym; Sponsor: 51271140; NSFC; National Science Foundation of China - Number; Acronym; Sponsor: 61561031; NSFC; National Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20162702564088

Title:Study of aberration characteristic of off-axis reflective system

Authors:Pang, Zhihai (1); Fan, Xuewu (1); Ren, Guorui (1); Ding, Jiaoteng (1); Xu, Liang (1); Feng, Liangjie (1)

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

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

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

Volume:45

Issue:6

Issue date:June 25, 2016

Publication year:2016

Article number:0618002

Language:Chinese

ISSN:10072276

Document type:Journal article (JA)

Publisher:Chinese Society of Astronautics

Abstract:Based on the 3rd vector wavefront aberration theory of axial symmetry optical system, the vector aberration expansions of off-axis optical system was obtained by pupil zoomed factorial and pupil decenter vector in this paper. It is known through the analysis that the off-axis optical system's aberration are still composed of 3rd spherical aberration 3rd coma and 3rd astigmatism. Due to the impact of pupil zoomed factorial, the decrease of the off-axis optical system's aberration coefficients were different proportion. The higher-order pupil aberration of coaxial system will induce low-order pupil aberration into off-axis mirror system. For example, if the coaxial system is not corrected for 3rd spherical aberration, it will introduce not only the spherical but also the constant coma and astigmatism into off-axis system. The aberration of off-axis system will not be asymmetry by the field center because the induced low-order aberration, and there maybe have an aberration zero point outside the center field of the view. © 2016, Editorial Board of Journal of Infrared and Laser Engineering. All right reserved.

Number of references:9

Page count:5

Main heading:Optical systems

Controlled terms:Aberrations - Aspherics - Mirrors - Spheres - Vectors - Wavefronts

Uncontrolled terms:Aberration coefficients - Different proportions - Off-axis mirrors - Pupil aberrations - Reflective systems - Spherical aberrations - Vector aberration - Wavefront aberrations

Classification code:741.1 Light/Optics - 741.3 Optical Devices and Systems - 921.1 Algebra

DOI:10.3788/IRLA201645.0618002

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20162402481827

Title:Guest Editorial Special Section on Learning in Non-(geo)metric Spaces

Authors:Pelillo, Marcello (1); Hancock, Edwin R. (2); Li, Xuelong (3); Murino, Vittorio (4)

Author affiliation:(1) Department of Environmental Sciences, Informatics and Statistics Ca, University of Venice, Via Torino 155, Venezia Mestre; 30172, Italy; (2) Department of Computer Science, University of York, York; YO105GH, United Kingdom; (3) Xian Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xian; 710119, China; (4) Pattern Analysis and Computer Vision, Istituto Italiano di Tecnologia, Genova; 16163, Italy

Source title:IEEE Transactions on Neural Networks and Learning Systems

Abbreviated source title:IEEE Trans. Neural Networks Learn. Sys.

Volume:27

Issue:6

Issue date:June 2016

Publication year:2016

Pages:1290-1293

Article number:7470326

Language:English

ISSN:2162237X

E-ISSN:21622388

Document type:Journal article (JA)

Publisher:Institute of Electrical and Electronics Engineers Inc.

Abstract:Traditional machine learning and pattern recognition techniques are intimately linked to the notion of feature spaces. Adopting this view, each object is described in terms of a vector of numerical attributes and is, therefore, mapped to a point in a Euclidean (geometric) vector space, so that the distances between the points reflect the observed (dis)similarities between the respective objects. This kind of representation is attractive because geometric spaces offer powerful analytical as well as computational tools that are simply not available in other representations. Indeed, classical machine learning methods are tightly related to geometrical concepts, and numerous powerful tools have been developed during the last few decades, starting from the maximal likelihood method in the 1920s to perceptrons in the 1960s and, more recently, to kernel machines and deep learning architectures. © 2012 IEEE.

DOI:10.1109/TNNLS.2016.2522770

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20153001069572

Title:Spectral multimodal hashing and its application to multimedia retrieval

Authors:Zhen, Yi (1); Gao, Yue (2); Yeung, Dit-Yan (3); Zha, Hongyuan (1); Li, Xuelong (4)

Author affiliation:(1) College of Computing, Georgia Institute of Technology, Atlanta; GA, United States; (2) Tsinghua National Laboratory for Information Science and Technology, Department of Automation, Tsinghua University, Beijing, China; (3) Department of Computer Science and Engineering, Hong Kong University of Science and Technology, Hong Kong, Hong Kong; (4) Center for Optical Imagery Analysis and Learning, State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, China

Source title:IEEE Transactions on Cybernetics

Abbreviated source title:IEEE Trans. Cybern.

Volume:46

Issue:1

Issue date:January 2016

Publication year:2016

Pages:27-38

Article number:7163570

Language:English

ISSN:21682267

Document type:Journal article (JA)

Publisher:Institute of Electrical and Electronics Engineers Inc.

Abstract:In recent years, multimedia retrieval has sparked much research interest in the multimedia, pattern recognition, and data mining communities. Although some attempts have been made along this direction, performing fast multimodal search at very large scale still remains a major challenge in the area. While hashing-based methods have recently achieved promising successes in speeding-up large-scale similarity search, most existing methods are only designed for uni-modal data, making them unsuitable for multimodal multimedia retrieval. In this paper, we propose a new hashing-based method for fast multimodal multimedia retrieval. The method is based on spectral analysis of the correlation matrix of different modalities. We also develop an efficient algorithm that learns some parameters from the data distribution for obtaining the binary codes. We empirically compare our method with some state-of-the-art methods on two real-world multimedia data sets. © 2015 IEEE.

Number of references:57

Main heading:Pattern recognition

Controlled terms:Algorithms - Data mining - Modal analysis - Spectrum analysis

Uncontrolled terms:Correlation matrix - Data distribution - Data mining community - Multimedia Retrieval - Multimodal search - Research interests - Scale similarity - State-of-the-art methods

DOI:10.1109/TCYB.2015.2392052

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20161702279006

Title:Compressed sensing sparse reconstruction for coherent field imaging

Authors:Cao, Bei (1); Luo, Xiu-Juan (1); Zhang, Yu (1); Liu, Hui (1); Chen, Ming-Lai (1)

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

Corresponding author:Cao, Bei(candy@opt.ac.cn)

Source title:Chinese Physics B

Abbreviated source title:Chin. Phys.

Volume:25

Issue:4

Issue date:April 1, 2016

Publication year:2016

Article number:040701

Language:English

ISSN:16741056

Document type:Journal article (JA)

Publisher:Institute of Physics Publishing

Abstract:Return signal processing and reconstruction plays a pivotal role in coherent field imaging, having a significant influence on the quality of the reconstructed image. To reduce the required samples and accelerate the sampling process, we propose a genuine sparse reconstruction scheme based on compressed sensing theory. By analyzing the sparsity of the received signal in the Fourier spectrum domain, we accomplish an effective random projection and then reconstruct the return signal from as little as 10% of traditional samples, finally acquiring the target image precisely. The results of the numerical simulations and practical experiments verify the correctness of the proposed method, providing an efficient processing approach for imaging fast-moving targets in the future. © 2016 Chinese Physical Society and IOP Publishing Ltd.

Number of references:16

Main heading:Image processing

Controlled terms:Compressed sensing - Computation theory - Image reconstruction - Numerical methods - Signal processing - Signal reconstruction

Uncontrolled terms:Coherent fields - Computational imaging - Processing approach - Random projections - Received signals - Reconstructed image - Sampling process - Sparse reconstruction

Classification code:716.1 Information Theory and Signal Processing - 721.1 Computer Theory, Includes Formal Logic, Automata Theory, Switching Theory, Programming Theory - 921.6 Numerical Methods

DOI:10.1088/1674-1056/25/4/040701

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:4747633

Title:Unsupervised Band Selection Based on Evolutionary Multiobjective Optimization for Hyperspectral Images

Authors:Gong, Maoguo (1); Zhang, Mingyang (1); Yuan, Yuan (2)

Author affiliation:(1) Ministry of Education, International Research, Center for Intelligent Perception and Computation, Xidian University, Xi'an, China; (2) Center for OPTical IMagery Analysis and Learning (OPTIMAL), State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Xi'an, China

Source title:IEEE Transactions on Geoscience and Remote Sensing

Abbreviated source title:IEEE Trans Geosci Remote Sens

Volume:54

Issue:1

Issue date:January 1, 2016

Publication year:2016

Pages:544-557

Article number:7214263

Language:English

ISSN:01962892

CODEN:IGRSD2

Document type:Journal article (JA)

Publisher:Institute of Electrical and Electronics Engineers Inc.

Abstract:Band selection is an important preprocessing step for hyperspectral image processing. Many valid criteria have been proposed for band selection, and these criteria model band selection as a single-objective optimization problem. In this paper, a novel multiobjective model is first built for band selection. In this model, two objective functions with a conflicting relationship are designed. One objective function is set as information entropy to represent the information contained in the selected band subsets, and the other one is set as the number of selected bands. Then, based on this model, a new unsupervised band selection method called multiobjective optimization band selection (MOBS) is proposed. In the MOBS method, these two objective functions are optimized simultaneously by a multiobjective evolutionary algorithm to find the best tradeoff solutions. The proposed method shows two unique characters. It can obtain a series of band subsets with different numbers of bands in a single run to offer more options for decision makers. Moreover, these band subsets with different numbers of bands can communicate with each other and have a coevolutionary relationship, which means that they can be optimized in a cooperative way. Since it is unsupervised, the proposed algorithm is compared with some related and recent unsupervised methods for hyperspectral image band selection to evaluate the quality of the obtained band subsets. Experimental results show that the proposed method can generate a set of band subsets with different numbers of bands in a single run and that these band subsets have a stable good performance on classification for different data sets. © 2015 IEEE.

Number of references:64

Controlled terms:algorithm - decision making - entropy - experimental study - image processing - model test - multiobjective programming - optimization - spectral analysis - unsupervised classification

Classification code:71.8.5.4 Remote sensing: numerical and image analysis

DOI:10.1109/TGRS.2015.2461653

Database:GEOBASE

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20160401835538

Title:Ultrafast laser photoinscription of large-mode-area waveguiding structures in bulk dielectrics

Authors:Stoian, R. (1); D'Amico, C. (1); Bhuyan, M.K. (1); Cheng, G. (1, 2)

Author affiliation:(1) Laboratoire Hubert Curien, Université de Lyon, Université Jean Monnet, UMR, CNRS 5516, Saint Etienne, France; (2) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, CAS, Xi'an, Shaanxi, China

Corresponding author:Stoian, R.(razvan.stoian@univ-st-etienne.fr)

Source title:Optics and Laser Technology

Abbreviated source title:Opt Laser Technol

Volume:80

Issue date:June 2016

Publication year:2016

Pages:98-103

Language:English

ISSN:00303992

CODEN:OLTCAS

Document type:Journal article (JA)

Publisher:Elsevier Ltd

Abstract:Ultrafast laser photoinscription and laser-based refractive index engineering develop towards a unique way for three-dimensional optical design inside bulk materials for the conception of embedded photonic applications. The specific optical functions for the light guiding elements, notably their single mode characteristics and the accessible spectral domains, depend on the achieved refractive index contrast in the material transparency window and on the characteristic dimensions of the optical modification. We give here an overview of several laser processing options, developed to increase the effective index area and contrast using pulse engineering methods in space and time, and optical design involving focal shaping, tubular concepts, evanescently coupled waveguide arrays, or structured waveguides. © 2015 Elsevier Ltd. Allrightsreserved.

Number of references:64

Main heading:Optical pulse shaping

Controlled terms:Optical design - Optical waveguides - Pulse shaping - Refractive index - Ultrafast lasers - Waveguides

Uncontrolled terms:Coupled waveguides - Engineering methods - Large mode area - Optical modifications - Photoinscription - Photonic application - Spectral domains - Waveguiding structures

Classification code:713.4 Pulse Circuits - 714.3 Waveguides - 741.1 Light/Optics - 744.1 Lasers, General

DOI:10.1016/j.optlastec.2015.11.025

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20161202119096

Title:SERS activity with tenfold detection limit optimization on a type of nanoporous AAO-based complex multilayer substrate

Authors:Sui, Chaofan (1, 2); Wang, Kaige (1, 2); Wang, Shuang (1, 2); Ren, Junying (1); Bai, Xiaohong (3); Bai, Jintao (1, 2)

Author affiliation:(1) National Key Laboratory Base of Photoelectric Technology, Functional Materials Co-Sponsored by Province and Ministry, Institute of Photonics Photon-Technology, Northwest University, Xi'an, China; (2) International Technology Cooperation Base of Photoelectric Technology, Functional Materials of Ministry of Science and Technology, Northwest University, Xi'an, China; (3) Xi'An Institute of Optics and Precision Mechanics Chinese Academy of Science, Key Laboratory of Ultrafast Photoelectric Dignostic Technology, Xi'an, China

Corresponding author:Wang, Kaige(wangkg@nwu.edu.cn)

Source title:Nanoscale

Abbreviated source title:Nanoscale

Volume:8

Issue:11

Issue date:March 21, 2016

Publication year:2016

Pages:5920-5927

Language:English

ISSN:20403364

E-ISSN:20403372

Document type:Journal article (JA)

Publisher:Royal Society of Chemistry

Abstract:Most of SERS applications are constricted by heterogeneous hotspots and aggregates of nanostructure, which result in low sensitivity and poor reproducibility of characteristic signals. This work intends to introduce SERS properties of a type of SERS-active substrate, Au-CuCl2-AAO, which is innovatively developed on a porous anodic alumina oxide (AAO) template. Spectral measuring results of Rhodamine 6G (R6G) on this substrate optimized by controlling morphology and gold thickness showed that enhancement factor (2.30 × 107) and detection limit (10-10M) were both improved and represented better performance than its template AAO. Homogenous hot spots across the region of interest were achieved by scanning SERS intensity distribution for the band at 1505 cm-1in 5 × 5 μm2area. Furthermore, the promising SERS activity of the flower-patterned substrate was theoretically explained through simulation of the electromagnetic field distribution. In addition, this SERS substrate is proposed for applications within the field of chemical and biochemical analyses. © 2016 The Royal Society of Chemistry.

Number of references:47

Main heading:Substrates

Controlled terms:Alumina - Anodic oxidation - Chemical analysis - Electromagnetic fields - Image segmentation

Uncontrolled terms:Biochemical analysis - Characteristic signal - Electromagnetic field distribution - Intensity distribution - Multilayer substrate - Patterned substrates - Porous anodic alumina - SERS-active substrates

Classification code:539.2.1 Protection Methods - 701 Electricity and Magnetism - 804.2 Inorganic Compounds

DOI:10.1039/c5nr06771e

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20161302145087

Title:Holographic optical trapping and manipulation based on phase-only liquid-crystal spatial light modulator

Authors:Liang, Yansheng (1); Yao, Baoli (1); Ma, Baiheng (1); Lei, Ming (1); Yan, Shaohui (1); Yu, Xianghua (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, China

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

Source title:Guangxue Xuebao/Acta Optica Sinica

Abbreviated source title:Guangxue Xuebao

Volume:36

Issue:3

Issue date:March 10, 2016

Publication year:2016

Article number:0309001

Language:Chinese

ISSN:02532239

CODEN:GUXUDC

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:An improved and rapid three dimensional Gerchberg-Saxton (GS) algorithm based on the classic GS algorithm for computer generated holograms is proposed and applied to holographic optical tweezers. Theoretical simulations and experimental results have demonstrated the rapidity and efficiency of the proposed algorithm. A robust holographic optical tweezers setup based on phase-only liquid-crystal spatial light modulator(SLM) is built, and stable trapping and dynamic manipulation of yeast cells and silica beads with large array traps in three dimensions are demonstrated. Two special traps, i.e., line trap with intensity gradient distribution and optical vortex trap, are generated to transport and rotate micro-particles respectively. The system is verified to be robust on particles manipulations, which provides a new and powerful tool for researches on biology, colloid physics and so on. © 2016, Chinese Laser Press. All right reserved.

Number of references:31

Page count:7

Main heading:Light modulators

Controlled terms:Algorithms - Computer generated holography - Holograms - Holography - Light modulation - Liquid crystals - Molecular biology - Optical tweezers

Uncontrolled terms:Computer generated holograms - G-S algorithms - Holographic optical tweezers - Intensity gradients - Liquid crystal spatial light modulators - Optical trapping and manipulation - Opticaltrapping - Theoretical simulation

Classification code:461.9 Biology - 741.1 Light/Optics - 743 Holography - 743.1 Holographic Techniques - 744.9 Laser Applications

DOI:10.3788/AOS201636.0309001

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20161502231619

Title:Quasi-all-fiber high-efficiency divided chirp-pulse amplification system based on active controlling

Authors:Yu, J. (1, 2); Feng, Y. (1, 2, 3); Duan, L.N. (1, 2); Li, X.H. (4); Hu, X.H. (1, 2); Zhang, T. (1); Zhang, W. (1); Wang, Y.S. (1); Yang, Z. (1); Zhao, W. (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xian Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xian, China; (2) University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing, China; (3) Department of Physics, Xian Jiaotong University, Xian, China; (4) School of Physics and Information Technology, Shaanxi Normal University, Xian, China

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

Source title:IEEE Photonics Journal

Abbreviated source title:IEEE Photon. J.

Volume:8

Issue:1

Issue date:February 2016

Publication year:2016

Article number:7397866

Language:English

ISSN:19430655

Document type:Journal article (JA)

Publisher:Institute of Electrical and Electronics Engineers Inc.

Abstract:We present a new high-efficiency divided chirp-pulse amplification (DCPA) system based on an actively controlled quasi-all-fiber structure. As a proof-of-principle experiment, a two-channel amplification system composed of single-mode ytterbium-doped fiber is constructed. The experimental results show that the degree of linear polarization of ∼93% is maintained after recombination and the system efficiency is up to ∼95%. In addition, the beam quality (M2factor) is around 1.2. Moreover, the system can operate stably for a long time without performance degradation. Compared with the traditional spatial DCPA, this system exhibits some advantages, such as improved spatial adjustment, high stability, compact size, and low cost. It is demonstrated that this work paves the way to design a quasi-all-fiber high-performance pulsed laser system. © 2009-2012 IEEE.

Number of references:19

Main heading:Pulsed lasers

Controlled terms:Amplification - Chirp modulation - Efficiency - Fibers - Laser beams - Ultrafast lasers

Uncontrolled terms:Chirp pulse amplification system - Chirp pulse amplifications - Degree of linear polarization - Fiber optics systems - Laser beam combining - Performance degradation - Proof-of-principle experiments - Ytterbium doped fibers

Classification code:716 Telecommunication; Radar, Radio and Television - 744.1 Lasers, General - 744.8 Laser Beam Interactions - 913.1 Production Engineering

DOI:10.1109/JPHOT.2016.2524201

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20164903083729

Title:Analysis of a Si-nanocrystal strip-loaded waveguide for nonlinear applications

Authors:Wei, Pengjiang (1); Wang, S.H. (2); Little, Brent E. (3); Chu, Sai Tak (1)

Author affiliation:(1) Department of Physics and Materials Science, City University of Hong Kong, Hong Kong; (2) Department of Microelectronics, Fuzhou University, Qi Shan Campus, Fuzhou; 350108, China; (3) State Key Lab of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, CAS, China

Source title:2016 21st OptoElectronics and Communications Conference, OECC 2016 - Held Jointly with 2016 International Conference on Photonics in Switching, PS 2016

Abbreviated source title:OptoElectron. Commun. Conf., OECC - Held Jointly Int. Conf. Photonics Switch., PS

Monograph title:2016 21st OptoElectronics and Communications Conference, OECC 2016 - Held Jointly with 2016 International Conference on Photonics in Switching, PS 2016

Issue date:October 26, 2016

Publication year:2016

Article number:7718425

Language:English

ISBN-13:9784885523052

Document type:Conference article (CA)

Conference name:21st OptoElectronics and Communications Conference, OECC 2016 - Held Jointly with 2016 International Conference on Photonics in Switching, PS 2016

Conference date:July 3, 2016 - July 7, 2016

Conference location:Niigata, Japan

Conference code:124472

Publisher:Institute of Electrical and Electronics Engineers Inc.

Abstract:We investigate the nonlinear properties of the doped silica glass integrated waveguide platform with a Si-nc strip-loaded structure. We show the nonlinear properties is drastically enhanced by adding a Si-nc layer in the waveguide core. © 2016 IEICE.

Number of references:17

Main heading:Optoelectronic devices

Controlled terms:Integrated optics - Nanoclusters - Nonlinear optics - Optical waveguides - Photonics - Silicon - Waveguides

Uncontrolled terms:High-index contrast waveguides - Integrated waveguides - Loaded structures - Nonlinear applications - Nonlinear properties - Si nanocrystal - Strip loaded waveguides - Waveguide core

Classification code:549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals - 714.3 Waveguides - 741.1.1 Nonlinear Optics - 741.3 Optical Devices and Systems - 761 Nanotechnology - 933 Solid State Physics

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20164903101516

Title:Stepless digital zoom for high definition camera

Authors:Guo, Huinan (1); Fang, Yao (1); Liu, Qing (1); Zhang, Hui (1); Ma, Nan (2); Duan, Baosong (3)

Author affiliation:(1) Xi'An Institute of Optics and Precision Mechanics of CAS, No.17, Xinxi Rd, Xi'an, Shaanxi, China; (2) People's Liberation Army of No.95879, Chengdu, Sichuan, China; (3) Xi'An Communications Institute, No.5, Guangming Rd, Changan district, Xi'an, Shaanxi, China

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

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:10033

Monograph title:Eighth International Conference on Digital Image Processing, ICDIP 2016

Issue date:2016

Publication year:2016

Article number:100334E

Language:English

ISSN:0277786X

E-ISSN:1996756X

CODEN:PSISDG

ISBN-13:9781510605039

Document type:Conference article (CA)

Conference name:8th International Conference on Digital Image Processing, ICDIP 2016

Conference date:May 20, 2016 - May 23, 2016

Conference location:Chengu, China

Conference code:124814

Sponsor:Chengdu University of Information Technology; Chinese Academy of Sciences Chengdu Institute of Computer Applications; International Association of Computer Science and Information Technology; Sichuan Province Computer Federation

Publisher:SPIE

Abstract:Real-time full frame view of surveillance camera provides integral visual information of scene. High definition imaging and zooming are widely adopted when observers want to capture more detail information of targets. The optical zooming can provide high zoom ratio detail images of target as well as maintain imaging definition, however, it fails to obtain full view of scene when zoomed, and the field of observation decreases to region of target. Digital zooming is an effective approach to keep the balance between imaging field and visual detail information. This paper presents a method of stepless zooming for digital video camera which could be widely used in autonomous pan, tilt and zoom surveillance system. In view of hardware resources and algorithm realizability, an optimized zooming processing structure is proposed. According to input zoom ratio parameter, it can extract pixels of region of interest adaptively and display with original imaging size by mapping and interpolation algorithms. Experimental results indicate that the stepless zooming method can be capable of achieving 1080p high definition imaging and 30 frame/s video capture. © 2016 SPIE.

Number of references:10

Main heading:Image processing

Controlled terms:Computational complexity - Computer graphics - Digital cameras - Image segmentation - Monitoring - Multimedia systems - Optical data processing - Security systems - Space surveillance - Video cameras

Uncontrolled terms:Digital video cameras - Effective approaches - High definition imaging - Interpolation algorithms - Region of interest - Surveillance cameras - Surveillance systems - Zoom

Classification code:656.2 Space Research - 721.1 Computer Theory, Includes Formal Logic, Automata Theory, Switching Theory, Programming Theory - 723.2 Data Processing and Image Processing - 723.5 Computer Applications - 742.2 Photographic Equipment - 914.1 Accidents and Accident Prevention

DOI:10.1117/12.2245155

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20165003113836

Title:Computer-Aided alignment method of optical lens with high accuracy

Authors:Xing, Song (1); Hou, Xiao-Hua (1); Zhang, Xue-Min (1); Ji, Bin-Dong (2)

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

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

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:9684

Monograph title:8th International Symposium on Advanced Optical Manufacturing and Testing Technology: Optical Test, Measurement Technology, and Equipment

Issue date:2016

Publication year:2016

Article number:968440

Language:English

ISSN:0277786X

E-ISSN:1996756X

CODEN:PSISDG

ISBN-13:9781628419191

Document type:Conference article (CA)

Conference name:8th International Symposium on Advanced Optical Manufacturing and Testing Technology: Optical Test, Measurement Technology, and Equipment, AOMATT 2016

Conference date:April 26, 2016 - April 29, 2016

Conference location:Suzhou, China

Conference code:124817

Sponsor:Chinese Academy of Sciences, Institute of Optics and Electronics (IOE); The Chinese Optical Society (COS)

Publisher:SPIE

Abstract:With the development of space and aviation industry, the optical systems with high resolution and better imaging quality are required. According to the alignment technical process, the factors of every step which have big influence to the imaging quality are analyzed. It is detected that the micro-stress assembly of the optical unit and the high co-Axial precision of the entire optical system are the two important factors which are supposed to determine how well the imaging quality of the optical system is; also the technical methods are discussed to ensure these two factors from the engineering view. The reflective interference testing method to measure the surface figure and the transitive interference testing method to measure the wave aberration of the optical unit are combined to ensure the micro-stress assembly of the optical unit, so it will not bring astigmatism to the whole system imaging quality. Optical alignment machining and precision alignment are combined to ensure the high co-Axial precision of the optical system. An optical lens of high accuracy is assembled by using these methods; the final wave aberration of optical lens is 0.022λ. © 2016 SPIE.

Number of references:9

Main heading:Lenses

Controlled terms:Manufacture - Optical instrument lenses - Optical systems - Optical testing - Precision engineering

Uncontrolled terms:Computer-aided alignment - Computer-aided alignment method - High-accuracy - Interference testing - Optical alignment machining - Optical lens - Precision alignment - Reflective interferences

Classification code:537.1 Heat Treatment Processes - 741.3 Optical Devices and Systems

DOI:10.1117/12.2245129

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20165003113924

Title:Research on manufacturing method of CGH

Authors:Duan, Xueting (1)

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

Corresponding author:Duan, Xueting

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

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:9684

Monograph title:8th International Symposium on Advanced Optical Manufacturing and Testing Technology: Optical Test, Measurement Technology, and Equipment

Issue date:2016

Publication year:2016

Article number:96841T

Language:English

ISSN:0277786X

E-ISSN:1996756X

CODEN:PSISDG

ISBN-13:9781628419191

Document type:Conference article (CA)

Conference name:8th International Symposium on Advanced Optical Manufacturing and Testing Technology: Optical Test, Measurement Technology, and Equipment, AOMATT 2016

Conference date:April 26, 2016 - April 29, 2016

Conference location:Suzhou, China

Conference code:124817

Sponsor:Chinese Academy of Sciences, Institute of Optics and Electronics (IOE); The Chinese Optical Society (COS)

Publisher:SPIE

Abstract:Computer Generated Holograms (CGH) has shown strong application potential and broad application prospect as the more and more extensive application of CGH. With respect to manufacture an available CGH, design the CGH will be easier. Therefore, this paper mainly summarizes some current feasible CGH manufacturing processes, and in this paper, the manufacturing processes of different types of CGH are presented and analyzed. © 2016 SPIE.

Number of references:4

Main heading:Industrial research

Controlled terms:Computer generated holography - Manufacture - Optical testing

Uncontrolled terms:Broad application - Computer generated holograms - Manufacturing methods - Manufacturing process

Classification code:537.1 Heat Treatment Processes - 723.5 Computer Applications - 741.3 Optical Devices and Systems - 901.3 Engineering Research

DOI:10.1117/12.2244164

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20164502990946

Title:Numerical simulation of thermo-mechanical behavior in high power diode laser arrays

Authors:Lu, Yao (1); Nie, Zhiqiang (1); Zhang, Pu (1); Wang, Zhenfu (1); Xiong, Lingling (1); Wang, Shuna (1); Wu, Dihai (1); Liu, Xingsheng (2)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Shaanxi, China; (2) Focuslight Technologies Co. LTD, Xi'an, Shaanxi, China

Source title:2016 17th International Conference on Electronic Packaging Technology, ICEPT 2016

Abbreviated source title:Int. Conf. Electron. Packag. Technol., ICEPT

Monograph title:2016 17th International Conference on Electronic Packaging Technology, ICEPT 2016

Issue date:October 4, 2016

Publication year:2016

Pages:76-83

Article number:7583094

Language:English

ISBN-13:9781509013968

Document type:Conference article (CA)

Conference name:17th International Conference on Electronic Packaging Technology, ICEPT 2016

Conference date:August 16, 2016 - August 19, 2016

Conference location:Wuhan, China

Conference code:124156

Publisher:Institute of Electrical and Electronics Engineers Inc.

Abstract:Thermal stress is an influential factor for the reliability of HPDL and their optical properties. Two packages of conduction-cooled-packaged 60W HPDL were selected as the study samples. In order to investigate what reflow factors influence thermo-mechanical of HPLD, a COS model is established. In reflow process and working process, hard solder package suffers higher thermal stress. Thermal stress mainly comes from reflow process. In reflow process, copper mount will deteriorate thermo-mechanical of hard solder package. There exists shear stress in HPLD and it will convert TE-polarized power to TM-polarized power. In working process, uniaxial normal stress along the width direction of QW is mainly influenced by coefficient expansion thermal. The displacement of HCS along growth direction is larger than that of CS, whereas the 'smile' value is smaller. 'Smile' is mainly impacted by CTE of solder and submount. © 2016 IEEE.

Number of references:13

Main heading:Semiconductor lasers

Controlled terms:Computer simulation - Electronics packaging - High power lasers - Numerical models - Occupational risks - Optical properties - Packaging - Power semiconductor diodes - Shear stress - Thermal stress

Uncontrolled terms:Conduction cooled - Growth directions - High-power diode laser arrays - Influential factors - Reflow process - Thermo-mechanical - Thermo-mechanical behaviors - Working process

Classification code:694.1 Packaging, General - 723.5 Computer Applications - 741.1 Light/Optics - 744.1 Lasers, General - 744.4.1 Semiconductor Lasers - 921 Mathematics - 931.2 Physical Properties of Gases, Liquids and Solids

Numerical data indexing:Power 6.00e+01W

DOI:10.1109/ICEPT.2016.7583094

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20164703033729

Title:Pedestrian Detection Inspired by Appearance Constancy and Shape Symmetry

Authors:Cao, Jiale (1); Pang, Yanwei (1); Li, Xuelong (2)

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

Source title:IEEE Transactions on Image Processing

Abbreviated source title:IEEE Trans Image Process

Volume:25

Issue:12

Issue date:December 2016

Publication year:2016

Pages:5538-5551

Article number:7569095

Language:English

ISSN:10577149

CODEN:IIPRE4

Document type:Journal article (JA)

Publisher:Institute of Electrical and Electronics Engineers Inc.

Abstract:Most state-of-the-art methods in pedestrian detection are unable to achieve a good trade-off between accuracy and efficiency. For example, ACF has a fast speed but a relatively low detection rate, while checkerboards have a high detection rate but a slow speed. Inspired by some simple inherent attributes of pedestrians (i.e., appearance constancy and shape symmetry), we propose two new types of non-neighboring features: side-inner difference features (SIDF) and symmetrical similarity features (SSFs). SIDF can characterize the difference between the background and pedestrian and the difference between the pedestrian contour and its inner part. SSF can capture the symmetrical similarity of pedestrian shape. However, it is difficult for neighboring features to have such above characterization abilities. Finally, we propose to combine both non-neighboring features and neighboring features for pedestrian detection. It is found that non-neighboring features can further decrease the log-average miss rate by 4.44%. The relationship between our proposed method and some state-of-the-art methods is also given. Experimental results on INRIA, Caltech, and KITTI data sets demonstrate the effectiveness and efficiency of the proposed method. Compared with the state-of-the-art methods without using CNN, our method achieves the best detection performance on Caltech, outperforming the second best method (i.e., checkerboards) by 2.27%. Using the new annotations of Caltech, it can achieve 11.87% miss rate, which outperforms other methods. © 2016 IEEE.

Number of references:56

Main heading:Feature extraction

Controlled terms:Adaptive boosting - Economic and social effects - Efficiency - Object detection

Uncontrolled terms:Detection performance - Detection rates - Effectiveness and efficiencies - High detection rate - neighboring features - non-neighboring features - Pedestrian detection - State-of-the-art methods

Classification code:723 Computer Software, Data Handling and Applications - 723.2 Data Processing and Image Processing - 913.1 Production Engineering - 971 Social Sciences

Numerical data indexing:Percentage 1.19e+01%, Percentage 2.27e+00%, Percentage 4.44e+00%

DOI:10.1109/TIP.2016.2609807

Funding Details: Number; Acronym; Sponsor: 61632081; NSFC; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20164603012491

Title:Waveguide fabrication in Yb3+doped phosphate glass by 50 kHz repetition rate ultrafast laser

Authors:Liu, Xin (1, 2); Bai, Jing (1); Zhao, Wei (1); Cheng, Guanghua (1)

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

Corresponding author:Cheng, Guanghua(gcheng@opt.ac.cn)

Source title:Journal of Laser Micro Nanoengineering

Abbreviated source title:J. Laser Micro Nanoeng.

Volume:11

Issue:3

Issue date:2016

Publication year:2016

Pages:321-325

Language:English

E-ISSN:18800688

Document type:Journal article (JA)

Publisher:Japan Laser Processing Society

Abstract:Waveguide (trace guiding type) inscription condition inside Yb3+doped phosphate bulk glass was investigated under irradiating of 50 kHz repetition rate volume ultrafast lasers. We processed single trace and multi-core ones inside the bulk material, the captured near field mode pattern confirmed that both structures perform good guiding properties. Beam shaping technique was adopted during fabrication of the single trace in order to obtain a relative symmetric waveguide cross section. Waveguide lasing was achieved in the single line trace with a linear cavity configuration. The maximum laser output of 11 mW was obtained under mono-directional of 980 nm space light pumping, with ~2% corresponding slope efficiency. Guiding mode could be manipulated in the Expanded-core waveguide (ECW) by extra design freedom in the structure parameter, and ECW generally support larger effective mode area light transporting.

Number of references:22

Main heading:Ultrafast lasers

Controlled terms:Glass - Optical waveguides - Pumping (laser) - Waveguides - Ytterbium

Uncontrolled terms:Beam shaping technique - Expanded-core - Expanded-core waveguides - Large mode area - Photo-inscription - Symmetric waveguides - Waveguide fabrication - Waveguide lasers

Classification code:547.2 Rare Earth Metals - 714.3 Waveguides - 744.1 Lasers, General - 812.3 Glass

Numerical data indexing:Frequency 5.00e+04Hz, Power 1.10e-02W, Size 9.80e-07m

DOI:10.2961/jlmn.2016.03.0007

Funding Details: Number; Acronym; Sponsor: 11BS09026; ANR; Agence Nationale de la Recherche - Number; Acronym; Sponsor: 61223007; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 61378019; NSFC; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20164703035678

Title:Pedestrian Detection Inspired by Appearance Constancy and Shape Symmetry

Authors:Cao, Jiale (1); Pang, Yanwei (1); Li, Xuelong (2)

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

Source title:IEEE Transactions on Image Processing

Abbreviated source title:IEEE Trans Image Process

Volume:25

Issue:12

Issue date:October 2016

Publication year:2016

Pages:5538-5551

Article number:7569095

Language:English

ISSN:10577149

CODEN:IIPRE4

Document type:Journal article (JA)

Publisher:Institute of Electrical and Electronics Engineers Inc.

Abstract:Most state-of-the-art methods in pedestrian detection are unable to achieve a good trade-off between accuracy and efficiency. For example, ACF has a fast speed but a relatively low detection rate, while checkerboards have a high detection rate but a slow speed. Inspired by some simple inherent attributes of pedestrians (i.e., appearance constancy and shape symmetry), we propose two new types of non-neighboring features: side-inner difference features (SIDF) and symmetrical similarity features (SSFs). SIDF can characterize the difference between the background and pedestrian and the difference between the pedestrian contour and its inner part. SSF can capture the symmetrical similarity of pedestrian shape. However, it is difficult for neighboring features to have such above characterization abilities. Finally, we propose to combine both non-neighboring features and neighboring features for pedestrian detection. It is found that non-neighboring features can further decrease the log-average miss rate by 4.44%. The relationship between our proposed method and some state-of-the-art methods is also given. Experimental results on INRIA, Caltech, and KITTI data sets demonstrate the effectiveness and efficiency of the proposed method. Compared with the state-of-the-art methods without using CNN, our method achieves the best detection performance on Caltech, outperforming the second best method (i.e., checkerboards) by 2.27%. Using the new annotations of Caltech, it can achieve 11.87% miss rate, which outperforms other methods. © 2016 IEEE.

Number of references:56

Main heading:Feature extraction

Controlled terms:Adaptive boosting - Economic and social effects - Efficiency - Object detection

Uncontrolled terms:Detection performance - Detection rates - Effectiveness and efficiencies - High detection rate - neighboring features - non-neighboring features - Pedestrian detection - State-of-the-art methods

Classification code:723 Computer Software, Data Handling and Applications - 723.2 Data Processing and Image Processing - 913.1 Production Engineering - 971 Social Sciences

Numerical data indexing:Percentage 1.19e+01%, Percentage 2.27e+00%, Percentage 4.44e+00%

DOI:10.1109/TIP.2016.2609807

Funding Details: Number; Acronym; Sponsor: 61632081; NSFC; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20163502747299

Title:Optical design for large depth of field

Authors:Shen, Yang (1, 2); Wang, Hu (1); Yue, Pan (1, 2); Xue, Yaoke (1); Liu, Jie (1); Ye, Shuifu (1)

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

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

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:9796

Monograph title:Selected Papers of the Photoelectronic Technology Committee Conferences held November 2015

Issue date:2016

Publication year:2016

Article number:97962Q

Language:English

ISSN:0277786X

E-ISSN:1996756X

CODEN:PSISDG

ISBN-13:9781628418811

Document type:Conference article (CA)

Conference name:International Symposia on Atmosphere Optics and Adaptive Optics, Testing and Driving of Laser Fusion Energy Technology, High-performance Special Optical Film Technology, Novel Navigation Technology, Monitoring, Early Warning, Removal Technology of Space Targets and Debris, and UAV Payload Technology

Conference date:November 15, 2015 - November 28, 2015

Conference location:Chengdu and Suzhou, China

Conference code:121285

Sponsor:Chinese Academy of Engineering; Chinese Society for Optical Engineering; National Natural Science Foundation of China

Publisher:SPIE

Abstract:Optical system with large depth of field and large field of view has been designed. To enforce optical system with focal length of 6 mm to imaging the object with object length of 200mmm-1200mm, accord to the equation of depth of field, in case of the CCD sensor with pixel of 5.5umx 5.5um square area, the entrance pupil diameter to ideal imaging will be 0.423mm. To enlarge the modulation transfer function (MTF) at spatial frequency of 90 lp/mm, the entrance pupil diameter is enlarged to 1mm. After design and optimization, with field of view of 80°, within object length of 200mm - 1200mm, the optical system can imaging well, the modulation transfer function (MTF) at spatial frequency of 90lp/mm is larger than 0.1, the distortion of full field of viewed is less than 3%.The optical system can be widely used in machine vision, surveillance cameras, etc. © 2016 SPIE.

Number of references:10

Main heading:Adaptive optics

Controlled terms:Computer vision - Focusing - Modulation - Optical design - Optical systems - Optical transfer function - Security systems - Space debris - Transfer functions

Uncontrolled terms:Depth of field - Design and optimization - Entrance pupil - Field of views - Focal lengths - Large field of views - Spatial frequency - Surveillance cameras

Classification code:656.1 Space Flight - 741 Light, Optics and Optical Devices - 914.1 Accidents and Accident Prevention - 921 Mathematics

Numerical data indexing:Percentage 3.00e+00%, Size 1.00e-03m, Size 2.00e-01m to 1.20e+00m, Size 4.23e-04m

DOI:10.1117/12.2229621

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20163402737302

Title:Linearly, radially and azimuthally polarized femtosecond laser induced periodic surface structures on amorphous alloy

Authors:Li, Chen (1, 2); Cheng, Guang-Hua (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics of CAS, Xi'an; 710119, China; (2) University of Chinese Academy of Science, Beijing; 10049, China

Corresponding author:Cheng, Guang-Hua(gcheng@opt.ac.cn)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:45

Issue:8

Issue date:August 1, 2016

Publication year:2016

Article number:0832001

Language:English

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:The formation mechanism of Laser Induced Periodic Surface Structures (LIPSS) on the amorphous alloy Zr44Ti11Cu10Ni10Be25(at%) was investigated. In experiment, LIPSS on the amorphous alloy were produced by ultrashort laser pulses of 120 fs duration at 800 nm wavelength in three types of laser polarizations (linear, radial and azimuthal polarization). These LIPSS are comprised of Low-Spatial-Frequency LIPSS (LSFL) with the periodicity of 652~723 nm and macro-ripples with the periodicity of 1 304~1 765 nm. By Finite-Difference Time-Domain (FDTD) simulations, formation mechanism of macro-ripples can be explained by the interference between laser and modulated scattered electromagnetic wave induced by rough surface. In the condition of three types of laser polarizations (linear, radial and azimuthal polarization), FDTD simulation results agree with experimental results, proving the effectiveness of the macro-ripple formation mechanism. © 2016, Science Press. All right reserved.

Number of references:23

Page count:6

Main heading:Periodic structures

Controlled terms:Amorphous alloys - Electromagnetic waves - Finite difference time domain method - Light modulators - Polarization - Surface structure - Ultrafast lasers - Ultrashort pulses

Uncontrolled terms:Amorphous metals - Finite -difference time domains (FDTD) - Laser-induced periodic surface structures - Spatial light modulators - Ultrafast laser processing

Classification code:531 Metallurgy and Metallography - 711 Electromagnetic Waves - 744.1 Lasers, General - 921 Mathematics - 931.2 Physical Properties of Gases, Liquids and Solids - 931.3 Atomic and Molecular Physics

Numerical data indexing:Size 1.30e-06m to 1.77e-06m, Size 6.52e-07m to 7.23e-07m, Size 8.00e-07m, Time 1.20e-13s

DOI:10.3788/gzxb20164508.0832001

Funding Details: Number; Acronym; Sponsor: 61223007; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 61378019; NSFC; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20160101768426

Title:Impact of light polarization on the measurement of water particulate backscattering coefficient

Authors:Liu, Jia (1, 2); Gong, Fang (1); He, Xian-Qiang (1); Zhu, Qian-Kun (1); Huang, Hai-Qing (1)

Author affiliation:(1) State Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography, State Oceanic Administration, Hangzhou, China; (2) Laboratory of Remote Sensing and Intelligent Information System, Xi'an Institute of Optics and Precision Mechanics of Chinese Academy of Sciences, Xi'an, China

Corresponding author:Gong, Fang(gongfang@sio.org.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:36

Issue:1

Issue date:January 1, 2016

Publication year:2016

Pages:31-37

Language:Chinese

ISSN:10000593

CODEN:GYGFED

Document type:Journal article (JA)

Publisher:Science Press

Abstract:Particulate backscattering coefficient is a main inherent optical properties (IOPs) of water, which is also a determining factor of ocean color and a basic parameter for inversion of satellite ocean color remote sensing. In-situ measurement with optical instruments is currently the main method for obtaining the particulate backscattering coefficient of water. Due to reflection and refraction by the mirrors in the instrument optical path, the emergent light source from the instrument may be partly polarized, thus to impact the measurement accuracy of water backscattering coefficient. At present, the light polarization of measuring instruments and its impact on the measurement accuracy of particulate backscattering coefficient are still poorly known. For this reason, taking a widely used backscattering coefficient measuring instrument HydroScat6 (HS-6) as an example in this paper, the polarization characteristic of the emergent light from the instrument was systematically measured, and further experimental study on the impact of the light polarization on the measurement accuracy of the particulate backscattering coefficient of water was carried out. The results show that the degree of polarization(DOP) of the central wavelength of emergent light ranges from 20% to 30% for all of the six channels of the HS-6, except the 590 nm channel from which the DOP of the emergent light is slightly low (~15%). Therefore, the emergent light from the HS-6 has significant polarization. Light polarization has non-neglectable impact on the measurement of particulate backscattering coefficient, and the impact degree varies with the wave band, linear polarization angle and suspended particulate matter(SPM) concentration. At different SPM concentrations, the mean difference caused by light polarization can reach 15.49%, 11.27%, 12.79%, 14.43%, 13.76%, and 12.46% in six bands, 420, 442, 470, 510, 590, and 670 nm, respectively. Consequently, the impact of light polarization on the measurement of particulate backscattering coefficient with an optical instrument should be taken into account, and the DOP of the emergent light should be reduced as much as possible. © 2016, Science Press. All right reserved.

Number of references:19

Main heading:Backscattering

Controlled terms:Color - Light polarization - Light sources - Optical instruments - Optical properties - Polarization - Remote sensing

Uncontrolled terms:Backscattering coefficients - Degree of polarization - Inherent optical properties - Inherent optical properties (IOPs) - Ocean color remote sensing - Polarization characteristics - Reflection and refractions - Suspended particulate matters

Classification code:741.1 Light/Optics - 941.3 Optical Instruments

Numerical data indexing:Percentage 1.13e+01%, Percentage 1.25e+01%, Percentage 1.28e+01%, Percentage 1.38e+01%, Percentage 1.44e+01%, Percentage 1.55e+01%, Percentage 2.00e+01% to 3.00e+01%, Size 5.90e-07m, Size 6.70e-07m

DOI:10.3964/j.issn.1000-0593(2016)01-0031-07

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20163002639631

Title:Effects of fluorine on the properties of Yb/Ce co-doped aluminosilicate preforms prepared by MCVD with organic chelate precursor doping technique

Authors:Li, Weinan (1); Luo, Rong (1); Li, Chao (1); Gao, Song (1); Chang, Chang (1); Hou, Chaoqi (1); Zhao, Baoyin (1)

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

Corresponding author:Hou, Chaoqi(houchaoqi@opt.ac.cn)

Source title:Journal of Non-Crystalline Solids

Abbreviated source title:J Non Cryst Solids

Volume:449

Issue date:October 1, 2016

Publication year:2016

Pages:119-124

Language:English

ISSN:00223093

CODEN:JNCSBJ

Document type:Journal article (JA)

Publisher:Elsevier

Abstract:Co-doped Yb/Ce aluminosilicate fiber preforms with less than 1 Wt% fluorine were prepared by MCVD with organic chelate precursor doping technique at 1400 °C. Fluorine content characterized by electron probe microanalysis decreased with increasing SiF4flow and flow ratio of SiF4/SiCl4. Under maximum SiF4flow the concentrations of Yb2O3and CeO2in the perform core were only as much as 17% and 25% under minimum SiF4flow, respectively, but smaller refractive index change was only shown in fiber core. The reason was that the reaction of SiF4with Al2O3,Yb2O3,CeO2were intensified with increasing flow ratio of SiF4/SiCl4and then resulted in producing more exhaust gas such as AlF3, YbF3and CeF4. Raman spectra of core glasses with < 0.5 Wt% fluorine present different Raman shifts from F doped silica glass with 1–3.3 Wt% fluorine: 945 cm− 1of [Formula presented] stretching bond was not observed, and with growth of fluorine content antisymmetric stretching vibrations of Si-O-Si linkages split from an envelope of 1188 cm− 1into two peaks or three peaks shifted higher frequency. At the same time, Boson peak near 125 cm− 1shifted to lower frequency. They were attributed to some minor changes of glass's network structure due to introducing lower fluorine into core glasses. On base of bonding energy measured by X-ray photoelectric spectroscopy, the plane graph describing the complex bonding distribution with F in core was supplied to in order to illustrate network structure change. © 2016 Elsevier B.V.

Number of references:32

Main heading:Fluorine

Controlled terms:Aluminosilicates - Chelation - Complex networks - Doping (additives) - Electron probe microanalysis - Glass - Photoelectricity - Preforming - Raman scattering - Refractive index - Silica - Stretching - Ytterbium

Uncontrolled terms:Aluminosilicate fibers - Antisymmetric stretching - Chelate precursor - Co-doped - Network structure change - Network structures - Refractive index changes - X-ray photoelectric spectroscopy

Classification code:535.2 Metal Forming - 547.2 Rare Earth Metals - 722 Computer Systems and Equipment - 741.1 Light/Optics - 801 Chemistry - 802.2 Chemical Reactions - 804 Chemical Products Generally - 812.3 Glass

Numerical data indexing:Percentage 1.70e+01%, Percentage 2.50e+01%, Temperature 1.67e+03K

DOI:10.1016/j.jnoncrysol.2016.07.016

Funding Details: Number; Acronym; Sponsor: 61138007; NSFC; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20161602246685

Title:Yb-doped LMA fiber fabrication using chelate precursor doping technique

Authors:Wang, Zhen (1, 2, 3); Gao, Cong (1); Ni, Li (1); Wang, Xiaolong (1); Peng, Kun (1, 2, 3); Wang, Yuying (1); Zhan, Huan (2, 3); Wang, Jianjun (1); Jing, Feng (1); Lin, Aoxiang (1)

Author affiliation:(1) Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang, China; (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, China; (3) Graduate School of Chinese Academy of Sciences (CAS), Beijing, China

Corresponding author:Lin, Aoxiang(aoxiang.research@gmail.com)

Source title:2015 11th Conference on Lasers and Electro-Optics Pacific Rim, CLEO-PR 2015

Abbreviated source title:Conf. Lasers Electro-Opt. Pac. Rim, CLEO-PR

Volume:1

Part number:1 of 4

Monograph title:2015 11th Conference on Lasers and Electro-Optics Pacific Rim, CLEO-PR 2015

Issue date:January 7, 2016

Publication year:2016

Article number:7375814

Language:English

ISBN-13:9781467371094

Document type:Conference article (CA)

Conference name:11th Conference on Lasers and Electro-Optics Pacific Rim, CLEO-PR 2015

Conference date:August 24, 2015 - August 28, 2015

Conference location:Busan, Korea, Republic of

Conference code:118957

Publisher:Institute of Electrical and Electronics Engineers Inc.

Abstract:We report on the fabrication of a kW-level Yb-doped fiber by using chelate precursor doping technique. Lasing performance was tested up to 1 kW laser output with slope efficiency of 81.8%. © 2015 IEEE.

Number of references:8

Main heading:Chelation

Controlled terms:Ytterbium

Uncontrolled terms:Chelate precursor - Doping techniques - Laser output - Lasing performance - Slope efficiencies - Yb-doped - Yb-doped fibers

Classification code:547.2 Rare Earth Metals - 802.2 Chemical Reactions

Numerical data indexing:Power 1.00e+03W

DOI:10.1109/CLEOPR.2015.7375814

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20162002392013

Title:Study on the methods of calibrating spectral line position of interference imaging spectrometer

Authors:Wei, Yu-Tong (1, 2); Liu, Shang-Kuo (3); Yan, Ting-Yu (1, 2); Li, Qi-Wei (1, 2)

Author affiliation:(1) School of Science, Xi'an Jiaotong University, Xi'an; 710049, China; (2) Institute of Space Optics, Xi'an Jiaotong University, Xi'an; 710049, China; (3) Xi'an Institute Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China

Corresponding author:Wei, Yu-Tong(helln7@sina.com)

Source title:Wuli Xuebao/Acta Physica Sinica

Abbreviated source title:Wuli Xuebao

Volume:65

Issue:8

Issue date:April 20, 2016

Publication year:2016

Article number:080601

Language:Chinese

ISSN:10003290

CODEN:WLHPAR

Document type:Journal article (JA)

Publisher:Institute of Physics, Chinese Academy of Sciences

Abstract:The principle of interference imaging spectrometer is presented. According to the drift of recovery spectral line position, two representative methods of calibrating the laboratory spectral line position are proposed, and the calibration results and their comparative analyses are given. One method of calibration is to correct the principle, which embarks from parameter selection of interference imaging spectrometer and the analysis of the reason why the spectral line position is drifted. Aiming at the problem that the position of spectral line changes with row, the correction scheme is given to improve the accuracy of spectral line position. For four given laser wavelengths, which are 543.5 nm, 594.1 nm, 612 nm, and 632.8 nm, the root-mean-square (RMS) error of spectral line position is reduced from 28.3914 to 5.5371 after calibration. For the interferometer system which has no dispersion, the accuracy of calibration is better than the dispersion system, and can be the same at all detected wavelengths. In this article, the calibration accuracy of long wave is better than that of short wave, which is dependent on the selection of the initial correction wavelength. This method achieves a kind of universality for interference imaging spectrometer and its calibration parameters provide a convenient way to analyze the instrument indexes. Another calibration method is data processing. It makes up the deficiencies of the method mentioned above: a large number of data are needed and the effect of calibration at short wave is not good enough. The RMS error of spectral line position is reduced to 0.9178, which proves that the calibration has a really high precision. This method is simple and can correct all the detected wavelengths and spectral lines by using two united formula. Though this method is not applicable for all the interference imaging spectrometers, the idea that makes hard things simple is deserving of our attention. We can use it in many other fields. The essence of the method is to change a variable quantity into a slowly varying quantity by algorithms, and then establish the relationship between the slowly varying quantity and the standard value. This idea can always make a substantial increase in efficiency of calibration and has a satisfied accuracy. Each of the two methods has advantages and disadvantages: which method we choose to use is dependent on the effect we want to achieve, and it is better to make their combination. This study provides a theoretical and practical guidance for study, design, modulation, experiment and engineering of interference imaging spectrometers. © 2016 Chinese Physical Society.

Number of references:31

Page count:10

Main heading:Calibration

Controlled terms:Data handling - Data processing - Dispersion (waves) - Spectrometers - Spectroscopy

Uncontrolled terms:Calibration accuracy - Calibration parameters - Interference imaging - Interferometer systems - Method of calibrations - Revision by line - Root-mean-square errors - Spectral line

Classification code:723.2 Data Processing and Image Processing - 741.3 Optical Devices and Systems

Numerical data indexing:Size 5.44e-07m, Size 5.94e-07m, Size 6.12e-07m, Size 6.33e-07m

DOI:10.7498/aps.65.080601

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20161002060165

Title:Biomimetic microchannels of planar reactors for optimized photocatalytic efficiency of water purification

Authors:Liao, Wuxia (1, 2); Wang, Ning (3, 4); Wang, Taisheng (1); Xu, Jia (1); Han, Xudong (1); Liu, Zhenyu (1); Zhang, Xuming (3, 4); Yu, Weixing (5)

Author affiliation:(1) State Key Laboratory of Applied Optics, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, No. 3888, Dongnanhu Road, Changchun, Jilin, China; (2) University of the Chinese Academy of Sciences, Beijing, China; (3) Shenzhen Research Institute, The Hong Kong Polytechnic University, Shenzhen, China; (4) Department of Applied Physics, Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong; (5) Key Laboratory of Spectral Imaging Technology, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, No. 17, Xinxi Road, Xian, China

Corresponding author:Zhang, Xuming(apzhang@polyu.edu.hk)

Source title:Biomicrofluidics

Abbreviated source title:Biomicrofluidics

Volume:10

Issue:1

Issue date:January 01, 2016

Publication year:2016

Article number:014123

Language:English

ISSN:19321058

Document type:Journal article (JA)

Publisher:American Institute of Physics Inc.

Abstract:This paper reports a biomimetic design of microchannels in the planar reactors with the aim to optimize the photocatalytic efficiency of water purification. Inspired from biology, a bifurcated microchannel has been designed based on the Murray's law to connect to the reaction chamber for photocatalytic reaction. The microchannels are designed to have a constant depth of 50 μm but variable aspect ratios ranging from 0.015 to 0.125. To prove its effectiveness for photocatalytic water purification, the biomimetic planar reactors have been tested and compared with the non-biomimetic ones, showing an improvement of the degradation efficiency by 68%. By employing the finite element method, the flow process of the designed microchannel reactors has been simulated and analyzed. It is found that the biomimetic design owns a larger flow velocity fluctuation than that of the non-biomimetic one, which in turn results in a faster photocatalytic reaction speed. Such a biomimetic design paves the way for the design of more efficient planar reactors and may also find applications in other microfluidic systems that involve the use of microchannels. © 2016 AIP Publishing LLC.

Number of references:17

Main heading:Microchannels

Controlled terms:Aspect ratio - Biomimetics - Degradation - Design - Efficiency - Finite element method - Flow velocity - Microfluidics - Purification - Water treatment plants

Uncontrolled terms:Biomimetic design - Degradation efficiency - Micro channel reactors - Micro fluidic system - Photocatalytic efficiency - Photocatalytic reactions - Velocity fluctuations - Water purification

Classification code:445.1 Water Treatment Techniques - 461.8 Biotechnology - 631 Fluid Flow - 632.5.1 Microfluidics - 802.2 Chemical Reactions - 913.1 Production Engineering - 921.6 Numerical Methods

Numerical data indexing:Size 5.00e-05m

DOI:10.1063/1.4942947

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20163802815454

Title:Robust object tracking via diverse templates

Authors:Wu, Siyuan (1, 2); Li, Xuelong (1); Lu, Xiaoqiang (1)

Author affiliation:(1) Center for OPTical IMagery Analysis and Learning (OPTIMAL), Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, Shaanxi; 710119, China; (2) University of the Chinese, Academy of Sciences, 19A Yuquanlu, Beijing; 100049, China

Corresponding author:Wu, Siyuan

Source title:IEEE CITS 2016 - 2016 International Conference on Computer, Information and Telecommunication Systems

Abbreviated source title:IEEE CITS - Int. Conf. Comput., Inf. Telecommun. Syst.

Monograph title:IEEE CITS 2016 - 2016 International Conference on Computer, Information and Telecommunication Systems

Issue date:August 16, 2016

Publication year:2016

Article number:7546394

Language:English

ISBN-13:9781509034406

Document type:Conference article (CA)

Conference name:2016 International Conference on Computer, Information and Telecommunication Systems, CITS 2016

Conference date:July 6, 2016 - July 8, 2016

Conference location:Kunming, China

Conference code:123384

Sponsor:State Key Laboratory of Integrated Services Networks (ISN); Xidian University; Yunnan Minzu University

Publisher:Institute of Electrical and Electronics Engineers Inc.

Abstract:Robust object tracking is a challenging task in computer vision. Since the appearance of the target changes frequently, how to build and update the appearance model is crucial. In this paper, to better represent the object dynamically, we propose a robust object tracker based on diverse templates. First, we construct diverse multiple templates using the determinantal point process algorithm adaptively, which efficiently detects the most diverse subset of a set. Second, a patch-matching method is employed to propagate every template density to the next frame, and a voting map for each template is constructed by all matching patches. Third, a weighted Bayesian filter framework aggregates all voting maps to optimize target state. Finally, in order to maintain the diversity of multiple templates, we dynamically add, remove and replace the target from templates. Experimental results prove that the proposed method outperforms state-of-the-art tracking algorithms significantly in terms of center position errors and success rates. © 2016 IEEE.

Number of references:23

Main heading:Image matching

Controlled terms:Computer vision - Image processing - Tracking (position)

Uncontrolled terms:Appearance modeling - Bayesian filters - Matching patch - Multiple templates - Object Tracking - Position errors - State of the art - Tracking algorithm

Classification code:723.5 Computer Applications

DOI:10.1109/CITS.2016.7546394

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20163702782909

Title:High-precision algorithm of surface parameter of parabolic primary mirror for space solar telescope

Authors:Xu, Guangzhou (1, 3); Ruan, Ping (1); Yang, Jianfeng (1); Li, Fu (1); Yan, Xingtao (1); Wang, Sen (2)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (2) National Astronomical Observatories, Chinese Academy of Sciences, Beijing; 100012, China; (3) University of Chinese Academy of Sciences, Beijing; 100049, China

Corresponding author:Xu, Guangzhou(xgz_buaa@163.com)

Source title:Optik

Abbreviated source title:Optik

Volume:127

Issue:22

Issue date:November 1, 2016

Publication year:2016

Pages:10687-10696

Language:English

ISSN:00304026

Document type:Journal article (JA)

Publisher:Elsevier GmbH

Abstract:The parabolic primary mirror (PM) of space solar telescope is sensitive to the serious external loads and surface variation of PM has large influence on the optical performance of the telescope. To evaluate the PM change under the external loads accurately, the high-precision algorithm based on the comprehensive surface parameter is presented. The discrete error of finite element discretization of optical surface is concerned for the first time and the elimination of discrete error is discussed as well. The calculation method of surface parameter including rigid body displacement, surface focus and root mean square is researched. Based on the high-precision algorithm, the surface parameter of PM under the isothermal temperature change is calculated and the law curve of surface parameter is also obtained with the change of temperature. The significant simulation result of surface parameter can effectively evaluate the surface change and guide the structure and environmental adaptation design of the PM. © 2016 Elsevier GmbH

Number of references:14

Main heading:Parameter estimation

Controlled terms:Algorithms - Errors - Mirrors - Rigid structures - Telescopes

Uncontrolled terms:Change of temperatures - Environmental adaptation - Finite-element discretization - Isothermal temperature - Optical performance - Rigid body displacement - Space solar telescope - Surface parameter

Classification code:408 Structural Design - 741.3 Optical Devices and Systems

DOI:10.1016/j.ijleo.2016.08.066

Funding Details: Number; Acronym; Sponsor: U1231204; NSFC; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20163702806376

Title:Extracting signal via stochastic resonance in the semiconductor optical amplifier

Authors:Zhao, Wulong (1); Liu, Hongjun (1); Sun, Qibing (1); Huang, Nan (1); Wang, Zhaolu (1); Han, Jing (1); Sun, Heng (1)

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

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

Source title:Chinese Optics Letters

Abbreviated source title:Chin. Opt. Lett.

Volume:14

Issue:8

Issue date:August 10, 2016

Publication year:2016

Article number:081901

Language:Chinese

ISSN:16717694

Document type:Journal article (JA)

Publisher:Science Press

Abstract:The stochastic resonance based on optical bistability in the semiconductor optical amplifier is numerically investigated to extract a weak pulse signal buried in noise. The output property of optical bistability under different system parameters is analyzed, which determines the performance of the stochastic resonance. Through optimizing these parameters, the noise-hidden signal is extracted via stochastic resonance, in which the maximum cross-correlation gain higher than nine is obtained. This provides a novel technology for detecting a weak optical signal in various signal processing fields. © 2016 Chinese Optics Letters.

Number of references:25

Page count:5

Main heading:Signal processing

Controlled terms:Circuit resonance - Light amplifiers - Magnetic resonance - Optical properties - Optical switches - Resonance - Semiconductor optical amplifiers - Stochastic systems

Uncontrolled terms:Maximum cross correlations - Optical signals - Output property - Pulse signal - Signal processing fields - Stochastic resonances

Classification code:701.2 Magnetism: Basic Concepts and Phenomena - 703.1 Electric Networks - 714.2 Semiconductor Devices and Integrated Circuits - 716.1 Information Theory and Signal Processing - 741.1 Light/Optics - 741.3 Optical Devices and Systems - 931.1 Mechanics - 961 Systems Science

DOI:10.3788/COL201614.081901

Funding Details: Number; Acronym; Sponsor: 61275134; NSFC; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20163502747296

Title:Navigation and geo-tracking system of UAV EO payload

Authors:Chen, Ying (1); Zhen, Kang (1); Xue, Yuanyuan (1); Zhang, Xiajiang (1); Li, Yingjuan (1); Tang, Chao (2)

Author affiliation:(1) Xi'an Institute of Applied Optical, Xi'an; 710065, China; (2) Xi'an Institute of AVIC Computing Technique, Xi'an; 710068, China

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

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:9796

Monograph title:Selected Papers of the Photoelectronic Technology Committee Conferences held November 2015

Issue date:2016

Publication year:2016

Article number:97962N

Language:English

ISSN:0277786X

E-ISSN:1996756X

CODEN:PSISDG

ISBN-13:9781628418811

Document type:Conference article (CA)

Conference name:International Symposia on Atmosphere Optics and Adaptive Optics, Testing and Driving of Laser Fusion Energy Technology, High-performance Special Optical Film Technology, Novel Navigation Technology, Monitoring, Early Warning, Removal Technology of Space Targets and Debris, and UAV Payload Technology

Conference date:November 15, 2015 - November 28, 2015

Conference location:Chengdu and Suzhou, China

Conference code:121285

Sponsor:Chinese Academy of Engineering; Chinese Society for Optical Engineering; National Natural Science Foundation of China

Publisher:SPIE

Abstract:A multi-function system based on inertial measurement unit (IMU) is introduced, which can fulfill navigation, attitude measurement of LOS in payload, platform stabilization and tracking control. The IMU is integrated with electro-optical sensors and a laser range finder on gimbals, which performs attitude calculation and navigation by constructing navigation coordinates in a mathematic platform, and the platform navigation information is obtained by transformation matrix between platform and gimbal coordinates. The platform comprising of gyros, electro-optical sensors and servo mechanism is capable of stabilizing line of sight and could be used to geo-tracking in the relevant field of view (FOV).The system can determine geography coordinates of the host platform and target only with navigation information and laser ranging data. The geo-tracking system always locked the target image at the center of FOV by calculating spatial geometry and adjusting LOS attitude. This tracking is different from TV tracking and geographical reference image tracking, which may be influenced by fog and obscurant. When the UAV is flying over urban or mountain areas for rescue missions, it can avoid the loss of targets due to strong maneuver or LOS obscuration, and reduce the operation load and improve rescue efficiency. © 2016 SPIE.

Number of references:9

Main heading:Adaptive optics

Controlled terms:Electrooptical devices - Linear transformations - Navigation - Optical sensors - Range finders - Space debris - Target tracking - Tracking (position) - Units of measurement - Unmanned aerial vehicles (UAV)

Uncontrolled terms:Attitude measurement - Electrooptical sensors - Inertial measurement unit - Laser range finders - Line of Sight - Navigation in formation - Navigtion - Transformation matrices

Classification code:652.1 Aircraft, General - 656.1 Space Flight - 741.1 Light/Optics - 741.3 Optical Devices and Systems - 902.2 Codes and Standards - 921.3 Mathematical Transformations - 943.1 Mechanical Instruments

DOI:10.1117/12.2229478

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20163402721533

Title:Calibration of stray light based on point source transmittance measurement system

Authors:Xu, Liang (1, 2); Gao, Li-Min (1); Zhao, Jian-Ke (1); Liu, Feng (1); Zhou, Yan (1); Li, Zhao-Hui (1, 2); Yang, Fei (3); Zhao, Qing (1, 2)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (2) University of Chinese Academy of Sciences, Beijing; 100049, China; (3) AVIC Xi'an Aircraft Industry (Group) Company LTD., Xi'an; 710089, China

Corresponding author:Xu, Liang(xuliang757@163.com)

Source title:Guangxue Jingmi Gongcheng/Optics and Precision Engineering

Abbreviated source title:Guangxue Jingmi Gongcheng

Volume:24

Issue:7

Issue date:July 1, 2016

Publication year:2016

Pages:1607-1614

Language:Chinese

ISSN:1004924X

CODEN:GJGOF4

Document type:Journal article (JA)

Publisher:Chinese Academy of Sciences

Abstract:To improve the stray light testing ability and calibration accuracy of the stray light equipment used in test of the Point Source Transmittance (PST), a calibration lens was proposed to calibrate the testing range and testing accuracy of the equipment in a large off-axial angle. By using a simple physical model, the calibration lens was designed in a laboratory. The physical parameters of the calibration lens were measured, then these parameters were taken into the TracePro to calculate the PSTs in different off-axial angles. Finally, the calculated result and the tested result of PSTs were compared, and the test accuracy of the equipment were obtained. The experimental results indicate that the difference between calculate results and testing results of the calibration lens is better than lg/0.5, meeting the need of testing accuracy calibration of the stray light equipment in testing PSTs and providing a reliable reference for the absolute measurement of PSTs. This technology solves the problem in testing accuracy calibration of PST measuring systems. © 2016, Science Press. All right reserved.

Number of references:12

Main heading:Calibration

Controlled terms:Ability testing - Distribution functions - Equipment - Stray light

Uncontrolled terms:Absolute measurements - Bidirectional reflectance distribution functions - Calibration accuracy - Measuring systems - Physical parameters - Simple Physical Models - Stray light testing - Transmittance measurements

Classification code:741.1 Light/Optics - 901 Engineering Profession - 912.4 Personnel - 922.1 Probability Theory

DOI:10.3788/OPE.20162407.1607

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20162902616570

Title:Nonspherical hollow α-Fe2O3structures synthesized by stepwise effect of fluoride and phosphate anions

Authors:Wang, Conghui (1, 5); Shi, Jing (4); Cui, Xinmin (1, 5); Wang, Huixiang (1, 5); Wu, Jianghong (1, 5); Zhang, Chenghua (1, 3); Wang, Liancheng (1); Lv, Baoliang (1); Xu, Yao (2)

Author affiliation:(1) State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan; 030001, 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) Synfuels China Technology Co. Ltd., Beijing; 101407, China; (4) Analytical Instrumentation Center, Institute of Coal Chemistry, Chinese Academy of Sciences, 27 South Taoyuan Road, Taiyuan; 030001, China; (5) University of Chinese Academy of Sciences, Beijing; 100049, China

Corresponding author:Lv, Baoliang(lbl604@sxicc.ac.cn)

Source title:Journal of Materials Chemistry A

Abbreviated source title:J. Mater. Chem. A

Volume:4

Issue:28

Issue date:2016

Publication year:2016

Pages:11000-11008

Language:English

ISSN:20507488

E-ISSN:20507496

CODEN:JMCAET

Document type:Journal article (JA)

Publisher:Royal Society of Chemistry

Abstract:Despite the significant progress in making hollow structures, it is still a challenge to synthesize some specialized hollow structures. In the present work, we obtained a new hollow hematite structure, tube-in-dodecahedron, by using the stepwise influences of fluoride and phosphate anions. Based on condition-dependent experiments, we proposed a "nucleation-aggregation-recrystallition and etching" mechanism, which also directed us to synthesize a series of hematite hollow structures, including hollow dodecahedron and hollow ellipsoid. The concentration of phosphate was found to play a decisive role in the control of these hollow structures. 0.08 mM is the critical point for keeping the top facets of dodecahedral hematite particles while 0.2 mM is the upper limit for keeping the lateral facets. The magnetic properties of these synthesized hollow hematite structures were found to be closely associated with the structures. The synthesized tube-in-dodecahedral hematite particles exhibited excellent photocatalytic reactivity toward organic dyes. © 2016 The Royal Society of Chemistry.

Number of references:48

Main heading:Hematite

Controlled terms:Fluorine compounds

Uncontrolled terms:Hematite particles - Hematite structure - Hollow structure - Non-Spherical - Organic dye - Phosphate anions - Photocatalytic reactivity - Upper limits

Classification code:482.2 Minerals

DOI:10.1039/c6ta03228a

Funding Details: Number; Acronym; Sponsor: 21373010; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 91545109; NSFC; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20162502506835

Title:Multi-view subspace clustering

Authors:Gao, Hongchang (1); Nie, Feiping (1); Li, Xuelong (2); Huang, Heng (1)

Author affiliation:(1) Computer Science and Engineering, University of Texas at Arlington, Arlington; TX; 76019, United States; (2) Center for OPTIMAL, XIOPM, Chinese Academy of Sciences, Xi'an; 710119, China

Corresponding author:Gao, Hongchang(hongchanggao@gmail.com)

Source title:Proceedings of the IEEE International Conference on Computer Vision

Abbreviated source title:Proc IEEE Int Conf Comput Vision

Volume:11-18-December-2015

Monograph title:Proceedings - 2015 IEEE International Conference on Computer Vision, ICCV 2015

Issue date:February 17, 2016

Publication year:2016

Pages:4238-4246

Article number:7410839

Language:English

ISSN:15505499

CODEN:PICVES

ISBN-13:9781467383912

Document type:Conference article (CA)

Conference name:15th IEEE International Conference on Computer Vision, ICCV 2015

Conference date:December 11, 2015 - December 18, 2015

Conference location:Santiago, Chile

Conference code:119541

Publisher:Institute of Electrical and Electronics Engineers Inc.

Abstract:For many computer vision applications, the data sets distribute on certain low-dimensional subspaces. Subspace clustering is to find such underlying subspaces and cluster the data points correctly. In this paper, we propose a novel multi-view subspace clustering method. The proposed method performs clustering on the subspace representation of each view simultaneously. Meanwhile, we propose to use a common cluster structure to guarantee the consistence among different views. In addition, an efficient algorithm is proposed to solve the problem. Experiments on four benchmark data sets have been performed to validate our proposed method. The promising results demonstrate the effectiveness of our method. © 2015 IEEE.

Number of references:26

Main heading:Computer vision

Controlled terms:Algorithms - Clustering algorithms

Uncontrolled terms:Benchmark data - Cluster structure - Computer vision applications - Data points - Low-dimensional subspace - Multi-views - Sub-Space Clustering - Subspace representation

Classification code:723.5 Computer Applications - 903.1 Information Sources and Analysis

DOI:10.1109/ICCV.2015.482

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20160501870511

Title:PH-dependent morphology and its effect on the optical properties of LaF3:Nd nanocrystals

Authors:Cui, Xiaoxia (1); Guo, Haitao (1); Wei, Wei (1, 2); Hou, Chaoqi (1); Gao, Fei (1); Peng, Bo (1, 2)

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) Institute of Advanced Materials, Nanjing University of Posts and Telecommunications, Nanjing; 210003, China

Corresponding author:Cui, Xiaoxia(cuixx@opt.ac.cn)

Source title:Materials Chemistry and Physics

Abbreviated source title:Mater Chem Phys

Volume:173

Issue date:April 15, 2016

Publication year:2016

Pages:132-138

Language:English

ISSN:02540584

CODEN:MCHPDR

Document type:Journal article (JA)

Publisher:Elsevier Ltd

Abstract:Nd3+-doped LaF3nanocrystals with different morphologies have been produced via solvothermal method at various pH values (1-6). Their morphologies and optical properties were characterized by TEM, fluorescence spectra and decay curves. A possible formation mechanism including burst-nucleation and growth process was proposed. The results reveal that when the pH increases from 1 to 2 to 4-6, the nanocrystals' mean size reduces slightly and the morphologies transform from the hollow sphere to the packed hexagon. The fluorescence lifetime and quantum efficiency achieved maximum for the samples synthesized at pH = 2. These nanocrystals with small size (<30 nm) and bright photoluminescence are promising phosphors in the applications of biological, optical amplifiers and liquid laser fields. © 2016 Elsevier B.V.

Number of references:29

Main heading:Optical properties

Controlled terms:Fluorescence - Light amplifiers - Liquid lasers - Morphology - Nanocrystals - Nanostructures - Optical materials - Surface properties

Uncontrolled terms:Decay curves - Fluorescence lifetimes - Fluorescence spectra - Formation mechanism - Hollow sphere - Nucleation and growth - PH-dependent - Solvothermal method

DOI:10.1016/j.matchemphys.2016.01.048

Funding Details: Number; Acronym; Sponsor: 61107015; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 61177084; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 61177086; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 61205039; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 61475189; NSFC; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20162302459216

Title:Semantic photo retargeting under noisy image labels

Authors:Zhang, Luming (1); Li, Xuelong (2); Nie, Liqiang (3); Yan, Yan (4); Zimmermann, Roger (3)

Author affiliation:(1) Department of CSIE, Hefei University of Technology, 193 Tunxi Rd, Hefei, China; (2) Center for OPTical IMagery Analysis and Learning (OPTIMAL), Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, Shaanxi; 710119, China; (3) School of Computing, National University of Singapore, 13 Computing Drive, 117417, Singapore; (4) Department of Information Engineering and Computer Science, University of Trento, Via Sommarive, 9, Trento; 38123, Italy

Source title:ACM Transactions on Multimedia Computing, Communications and Applications

Abbreviated source title:ACM Trans. Multimedia Comput. Commun. Appl.

Volume:12

Issue:3

Issue date:May 2016

Publication year:2016

Article number:37

Language:English

ISSN:15516857

E-ISSN:15516865

Document type:Journal article (JA)

Publisher:Association for Computing Machinery

Abstract:With the popularity of mobile devices, photo retargeting has become a useful technique that adapts a high-resolution photo onto a low-resolution screen. Conventional approaches are limited in two aspects. The first factor is the de-emphasized role of semantic content that is many times more important than lowlevel features in photo aesthetics. Second is the importance of image spatial modeling: Toward a semantically reasonable retargeted photo, the spatial distribution of objects within an image should be accurately learned. To solve these two problems, we propose a new semantically aware photo retargeting that shrinks a photo according to region semantics. The key technique is a mechanism transferring semantics of noisy image labels (inaccurate labels predicted by a learner like an SVM) into different image regions. In particular, we first project the local aesthetic features (graphlets in this work) onto a semantic space, wherein image labels are selectively encoded according to their noise level. Then, a category-sharing model is proposed to robustly discover the semantics of each image region. The model is motivated by the observation that the semantic distribution of graphlets from images tagged by a common label remains stable in the presence of noisy labels. Thereafter, a spatial pyramid is constructed to hierarchically encode the spatial layout of graphlet semantics. Based on this, a probabilistic model is proposed to enforce the spatial layout of a retargeted photo to be maximally similar to those from the training photos. Experimental results show that (1) noisy image labels predicted by different learners can improve the retargeting performance, according to both qualitative and quantitative analysis, and (2) the category-sharing model stays stable even when 32.36% of image labels are incorrectly predicted. ©2016 ACM.

Number of references:45

Main heading:Semantics

Controlled terms:Mobile devices

Uncontrolled terms:Aesthetics evaluation - Conventional approach - Graphlet - High-resolution photos - Probabilistic modeling - Qualitative and quantitative analysis - Retargeting - Semantic distribution

Classification code:716 Telecommunication; Radar, Radio and Television

DOI:10.1145/2886775

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20161402181281

Title:Influence of absorption on stability of terahertz difference frequency generation

Authors:Huang, Nan (1); Liu, Hongjun (1); Sun, Qibing (1); Wang, Zhaolu (1); Li, Shaopeng (1); Han, 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, China

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

Source title:Applied Optics

Abbreviated source title:Appl. Opt.

Volume:55

Issue:3

Issue date:January 20, 2016

Publication year:2016

Pages:444-448

Language:English

ISSN:1559128X

E-ISSN:21553165

CODEN:APOPAI

Document type:Journal article (JA)

Publisher:OSA - The Optical Society

Abstract:This work presents numerical studies of the stability feature of terahertz difference frequency generation (THz-DFG) with a ZnGeP2crystal using two pump wavelengths. We found that the maximum output of a THz wave is located in the unstable output region because of the competitive equilibrium between the absorption and the gain. Furthermore, the output stability is dependent on the pump stability. Different from the results at the pump wavelength of 9.588 μm, there is neither an appropriate stable output region nor gain saturation region at the pump wavelength of 1.064 μm for a larger absorption coefficient. This work demonstrates that the stable output region of the THz wave is difficult to obtain when the pump absorption is excessively large in DFG. © 2016 Optical Society of America.

Number of references:24

Main heading:Terahertz waves

Controlled terms:Optical frequency conversion - Stability

Uncontrolled terms:Absorption co-efficient - Competitive equilibrium - Difference-frequency generation - Gain saturation - Maximum output - Output stability - Pump absorption - Pump wavelength

Classification code:711 Electromagnetic Waves - 741.1.1 Nonlinear Optics

DOI:10.1364/AO.55.000444

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20162102412270

Title:Generation of cylindrical vector beams based on common-path interferometer with a vortex phase plate

Authors:Liang, Yansheng (1); Yan, Shaohui (1); Yao, Baoli (1); Lei, Ming (1); Min, Junwei (1); Yu, Xianghua (1)

Author affiliation:(1) Xi'An Institute of Optics and Precision Mechanics, State Key Laboratory of Transient Optics and Photonics, Chinese Academy of Sciences, No. 17, Xinxi Road, High-Tech Zone, Xi'an; 710119, China

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

Source title:Optical Engineering

Abbreviated source title:Opt Eng

Volume:55

Issue:4

Issue date:April 1, 2016

Publication year:2016

Article number:046117

Language:English

ISSN:00913286

E-ISSN:15602303

CODEN:OPEGAR

Document type:Journal article (JA)

Publisher:SPIE

Abstract:Cylindrical vector (CV) beams have found increasing applications in physics, biology, and chemistry. To generate CV beams, interferometric technique is popularly adopted due to its flexibility. However, most interferometric configurations for the generation of CV beams are faced with system instability arising from external disturbance, limiting their practical applications. A common-path interferometer for the generation of radially and azimuthally polarized beams is proposed to improve the system stability. The optical configuration consists of a vortex phase plate acting to tailor the phase profile and a cube nonpolarizing beamsplitter to split the input beam into two components with mirror-like spiral phase distribution. The generated CV beams show a high quality in polarization and exhibit a better stability of beam profile than those obtained by noncommon-path interferometric configurations. © 2016 Society of Photo-Optical Instrumentation Engineers (SPIE).

Number of references:39

Main heading:Interferometry

Controlled terms:Interferometers - Optical beam splitters - Polarization - System stability - Vortex flow - Wave interference

Uncontrolled terms:Azimuthally polarized beams - Common-path interferometers - Cylindrical vector beam - Electromagnetic optics - Interferometric configuration - Interferometric techniques - Optical configurations - Singular optics

Classification code:631.1 Fluid Flow, General - 741.3 Optical Devices and Systems - 941.3 Optical Instruments - 941.4 Optical Variables Measurements - 961 Systems Science

DOI:10.1117/1.OE.55.4.046117

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20161502227985

Title:Query-Adaptive Reciprocal Hash Tables for Nearest Neighbor Search

Authors:Liu, Xianglong (1); Deng, Cheng (2); Lang, Bo (1); Tao, Dacheng (3); Li, Xuelong (4)

Author affiliation:(1) State Key Laboratory of Software Development Environment, Beihang University, Beijing, China; (2) School of Electronic Engineering, Xidian University, Xi'an, China; (3) Centre for Quantum Computation and Intelligent Systems, Faculty of Engineering and Information Technology, University of Technology at Sydney, Sydney; NSW, Australia; (4) State Key Laboratory of Transient Optics and Photonics, Center for Optical Imagery Analysis and Learning, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, China

Corresponding author:Deng, Cheng(chdeng.xd@gmail.com)

Source title:IEEE Transactions on Image Processing

Abbreviated source title:IEEE Trans Image Process

Volume:25

Issue:2

Issue date:February 1, 2016

Publication year:2016

Pages:907-919

Article number:7346481

Language:English

ISSN:10577149

CODEN:IIPRE4

Document type:Journal article (JA)

Publisher:Institute of Electrical and Electronics Engineers Inc.

Abstract:Recent years have witnessed the success of binary hashing techniques in approximate nearest neighbor search. In practice, multiple hash tables are usually built using hashing to cover more desired results in the hit buckets of each table. However, rare work studies the unified approach to constructing multiple informative hash tables using any type of hashing algorithms. Meanwhile, for multiple table search, it also lacks of a generic query-adaptive and fine-grained ranking scheme that can alleviate the binary quantization loss suffered in the standard hashing techniques. To solve the above problems, in this paper, we first regard the table construction as a selection problem over a set of candidate hash functions. With the graph representation of the function set, we propose an efficient solution that sequentially applies normalized dominant set to finding the most informative and independent hash functions for each table. To further reduce the redundancy between tables, we explore the reciprocal hash tables in a boosting manner, where the hash function graph is updated with high weights emphasized on the misclassified neighbor pairs of previous hash tables. To refine the ranking of the retrieved buckets within a certain Hamming radius from the query, we propose a query-adaptive bitwise weighting scheme to enable fine-grained bucket ranking in each hash table, exploiting the discriminative power of its hash functions and their complement for nearest neighbor search. Moreover, we integrate such scheme into the multiple table search using a fast, yet reciprocal table lookup algorithm within the adaptive weighted Hamming radius. In this paper, both the construction method and the query-adaptive search method are general and compatible with different types of hashing algorithms using different feature spaces and/or parameter settings. Our extensive experiments on several large-scale benchmarks demonstrate that the proposed techniques can significantly outperform both the naive construction methods and the state-of-the-art hashing algorithms. © 1992-2012 IEEE.

Number of references:50

Main heading:Nearest neighbor search

Controlled terms:Algorithms - Bins - Data structures - Hash functions - Image retrieval - Query processing - Table lookup

Uncontrolled terms:Adaptive search method - Binary quantization - Construction method - Discriminative power - Graph representation - Hash table - Locality sensitive hashing - query adaptive

Classification code:694.4 Storage - 723.1 Computer Programming - 723.2 Data Processing and Image Processing - 921.5 Optimization Techniques

DOI:10.1109/TIP.2015.2505180

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20160201781837

Title:Ultra-high Q one-dimensional hybrid PhC-SPP waveguide microcavity with large structure tolerance

Authors:Liu, Feng (1); Zhang, Lingxuan (1, 2, 3); Lu, Xiaoyuan (1, 3); Wang, Weiqiang (1); Wang, Leiran (1); Wang, Guoxi (1, 2); Zhang, Wenfu (1, 2); Zhao, Wei (1, 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, China; (2) China-U.K. Joint Research Center of Micro/Nano Photonics, XIOPM, CAS, Xi'an, China; (3) University of Chinese Academy of Sciences, Beijing, China

Corresponding author:Zhang, Lingxuan(zhanglingxuan@opt.cn)

Source title:Journal of Modern Optics

Abbreviated source title:J. Mod. Opt.

Volume:63

Issue:12

Issue date:July 3, 2016

Publication year:2016

Pages:1158-1165

Language:English

ISSN:09500340

E-ISSN:13623044

CODEN:JMOPEW

Document type:Journal article (JA)

Publisher:Taylor and Francis Ltd.

Abstract:A photonic crystal - surface plasmon-polaritons hybrid transverse magnetic mode waveguide based on a one-dimensional optical microcavity is designed to work in the communication band. A Gaussian field distribution in a stepping heterojunction taper is designed by band engineering, and a silica layer compresses the mode field to the subwavelength scale. The designed microcavity possesses a resonant mode with a quality factor of 1609 and a modal volume of 0.01 cubic wavelength. The constant period and the large structure tolerance make it realizable by current processing techniques. © 2016 Taylor & Francis.

Number of references:29

Main heading:Crystal structure

Controlled terms:Electromagnetic wave polarization - Heterojunctions - Microcavities - Optical communication - Particle optics - Phonons - Photonic crystals - Photons - Plasmons - Quantum theory - Surface plasmon resonance - Waveguides

Uncontrolled terms:Band engineering - Communication bands - Current processing - Large structures - Optical microcavities - Subwavelength scale - Surface plasmon polaritons - Transverse magnetic modes

DOI:10.1080/09500340.2015.1130272

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20161502213267

Title:Analysis of the influence of nanofissure morphology on the performance of surface-conduction electron emitters

Authors:Shen, Zhihua (1); Wang, Xiao (1); Wu, Shengli (1); Tian, JinShou (2)

Author affiliation:(1) Key Laboratory for Physical Electronics and Devices, Ministry of Education, Xi'An Jiaotong University, Xi'an, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics of CAS, Xi'an, China

Source title:Journal of Micromechanics and Microengineering

Abbreviated source title:J Micromech Microengineering

Volume:26

Issue:4

Issue date:March 11, 2016

Publication year:2016

Article number:045011

Language:English

ISSN:09601317

E-ISSN:13616439

CODEN:JMMIEZ

Document type:Journal article (JA)

Publisher:Institute of Physics Publishing

Abstract:A simulation model was built to numerically investigate the electron emission property of a new surface-conduction electron emitter (SCE) with a raised emitter structure. The model calculated the electric field distribution, the electron emission characteristics, and the electron trajectories, which were useful for analyzing and understanding the microscopic mechanism of the electron emissions of the new SCE structure. It was found that the new structure increased the probability of electrons being collected by the anode which led to an increase of the anode current despite of the decrease of field emission current. This study benefits the advanced design of emitter structures in nanoscale technology for new types of electron sources. © 2016 IOP Publishing Ltd.

Number of references:24

Main heading:Electron emission

Controlled terms:Anodes - Design - Electric fields - Electrodes - Electrons - Nanotechnology

Uncontrolled terms:Electric field distributions - Electron emission properties - Emission characteristics - Field emission currents - Finite integration technique - Nano-meter scale - Nanoscale technologies - Surface-conduction electron emitters

Classification code:701.1 Electricity: Basic Concepts and Phenomena - 714.1 Electron Tubes - 761 Nanotechnology

DOI:10.1088/0960-1317/26/4/045011

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20160101763557

Title:Analysis of dual-end-pumped Nd3+-doped index-crossover gain guided-index antiguided fiber laser

Authors:Shen, Xiao (1, 2); Wei, Wei (1); Zou, Hui (1); Zhang, Liaolin (1)

Author affiliation:(1) College of Optoelectronic Engineering, Nanjing University of Posts and Telecommunications, Nanjing, Jiangsu, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xian, Shanxi, China

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

Source title:Optics Communications

Abbreviated source title:Opt Commun

Volume:366

Issue date:May 1, 2016

Publication year:2016

Pages:205-209

Language:English

ISSN:00304018

CODEN:OPCOB8

Document type:Journal article (JA)

Publisher:Elsevier

Abstract:A dual-end pumped Nd3+-doped index-crossover gain guided-index antiguided (IGG-IAG) fiber laser is analyzed in theory. Pump light propagation and output laser characteristics are both explored by solving the related rate equations. Simulation results show that pump power confined in the IGG-IAG fiber core is larger and more uniform than that of the gain-guided and index-antiguided(GG-IAG) fiber, and the optimum fiber length and the output power of the IGG-IAG fiber laser are both larger than that of GG-IAG fiber laser. The relationship between threshold pump power and doped concentration, fiber length, fiber radius is researched respectively. The analysis results give out a method for the optimal design of the IGG-IAG fiber laser. © 2015 Elsevier B.V. All rights reserved.

Number of references:15

Main heading:Pumping (laser)

Controlled terms:Fiber lasers - Fibers - Laser theory

Uncontrolled terms:Gain-guided index antiguided fibers - Index antiguided - Laser characteristics - Optimal design - Optimum fiber length - Pump power distribution - Rate equations - Threshold pump power

Classification code:744.1 Lasers, General - 744.4 Solid State Lasers

DOI:10.1016/j.optcom.2015.12.063

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20161902355992

Title:Visualized measurement of the liquid phase diffusion by using digital holographic interferometry

Authors:Wang, Jun (1, 2); Yang, Rong (1); Zheng, Jiao (1); Zhao, Jian-Lin (2)

Author affiliation:(1) School of Mechanical and Precision Instrument Engineering, Xi'an University of Technology, Xi'an; 710048, China; (2) Shaanxi Key Laboratory of Optical Information Technology and the Key Laboratory of Space Applied Physics and Chemistry, School of Science, Northwestern Polytechnical University, Xi'an; 710072, China

Corresponding author:Zhao, Jian-Lin(jlzhao@nwpu.edu.cn)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:45

Issue:4

Issue date:April 1, 2016

Publication year:2016

Article number:0412001

Language:English

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:Liquid phase diffusion is a high energy consumption process in chemical production. With the rapid development of the chemical technology based on liquid phase diffusion, especially in some emerging fields such as biomedicine and environmental science, the microcosmic study on the liquid phase diffusion is becoming more and more important. By applying the digital holographic interferometry, a diffusion process in liquid phase of pure ethanol and water was observed. After recording the digital hologram by a Mach-Zehnder interferometer and reconstructing digital hologram of object beam by the gray scale analysis, the phase variation of object wavefront in the diffusion process at different times and the curves of refractive index change in the diffusion area were both acquired. The result shows that by applying the digital holographic interferometry, a fast, real time and high-accuracy diffusion can be realized. Moreover, this method can be used to realize a remote visual monitoring. In addition, this method combining with wavelength and angular multiplexing techniques can be applied to obtain nonlinear characteristics parameters in multiple-phase diffusion measurements. © 2016, Chinese Optical Society. All right reserved.

Number of references:16

Page count:7

Main heading:Diffusion

Controlled terms:Computer generated holography - Energy utilization - Environmental technology - Holograms - Holographic interferometry - Holography - Image processing - Interferometry - Liquids - Refractive index - Semiconductor quantum wells

Uncontrolled terms:Coherence imaging - Digital holographic interferometry - Digital holography - High energy consumption - Liquid phase diffusion - Nonlinear characteristics - Refractive index changes - Visualized measurements

Classification code:454 Environmental Engineering - 525.3 Energy Utilization - 714.2 Semiconductor Devices and Integrated Circuits - 741.1 Light/Optics - 743 Holography - 743.1 Holographic Techniques - 941.4 Optical Variables Measurements

DOI:10.3788/gzxb20164504.0412001

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20161602269773

Title:Research of LD-pumped passively Q-switched Yb:YAG thin disk laser

Authors:Wang, Xu (1, 2); Cheng, Guang-Hua (1); Sun, Zhe (1)

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

Corresponding author:Cheng, Guang-Hua(gcheng@opt.ac.cn)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:45

Issue:3

Issue date:March 1, 2016

Publication year:2016

Article number:0314009

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:Using 940 nm diode laser as pumping source, a passively Q-switched Yb:YAG thin disk laser by Cr4+:YAG was realized. The Yb:YAG disk with 500 μm thickness was employed, the Yb3+atom fraction is 10%. The distribution of temperature in Yb:YAG disk with direct water cooling and SiC cooling with different thickness was theoretically simulated, respectively. The maximum output power of 2.8 W at 1030 nm was obtained with 800 μm SiC cooling, the output power has increased by 40% than that obtained with direct water cooling. The initial transmission of Cr4+:YAG crystal and the output coupling rate were optimized by Degnan's theory. With the initial transmission of Cr4+:YAG crystal of 93% and the output coupling rate of 10%, a stable pulse train of 1.95 W averaged output power with a pulse energy of 1.2 mJ and pulse width of 74 ns were obtained with 800 μm SiC cooling. The repetition rate is 1.6 kHz, the slope efficiency is 18.1%, and the beam quality Mx2=1.622, My2=1.616. © 2016, Science Press. All right reserved.

Number of references:17

Page count:5

Main heading:Pumping (laser)

Controlled terms:Cooling - Cooling water - Lasers - Q switched lasers - Q switching - Silicon carbide - Solid state lasers - Ytterbium

Uncontrolled terms:Different thickness - Direct water cooling - Distribution of temperature - Maximum output power - Output coupling - Passively Q-switched - Slope efficiencies - Thin-disk lasers

Classification code:547.2 Rare Earth Metals - 641.2 Heat Transfer - 744 Lasers - 804.2 Inorganic Compounds

DOI:10.3788/gzxb20164503.0314009

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20161202118757

Title:Passively Q-switched nd:YAG laser via a WS2saturable absorber

Authors:Wang, Xi (1); Wang, Yonggang (1); Duan, Lina (1); Li, Lu (1); Sun, Hang (1)

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

Corresponding author:Wang, Yonggang(chinawygxjw@opt.ac.cn)

Source title:Optics Communications

Abbreviated source title:Opt Commun

Volume:367

Issue date:May 15, 2016

Publication year:2016

Pages:234-238

Language:English

ISSN:00304018

CODEN:OPCOB8

Document type:Journal article (JA)

Publisher:Elsevier

Abstract:In this work, we report a passively Q-switched Nd:YAG laser at 1064 nm by using WS2solution as the saturable absorber (SA). The WS2solution with different concentrations (0.25, 0.5, and 1 mg/ml) were fabricated by the liquid-phase-exfoliated method and injected into quartz cells. Such liquid absorbers have the virtues of adjustable optical absorption, high heat dissipation and non-contact damage. By inserting those WS2solutions in the laser cavity, stable Q-switched laser operations were obtained. The corresponding pulse duration as short as 922 ns was obtained. The result shows that the WS2material can be act as absorber for solid-state lasers. © 2016 Elsevier B.V. All rights reserved.

Number of references:44

Main heading:Neodymium lasers

Controlled terms:Electromagnetic wave absorption - Light absorption - Q switched lasers - Q switching - Saturable absorbers - Solid state lasers

Uncontrolled terms:140.3540 - 140.3580 - Liquid Phase - Non-contact - Ocis codes - Passively Q-switched - Pulse durations - Quartz cells

Classification code:711 Electromagnetic Waves - 741.1 Light/Optics - 744 Lasers

DOI:10.1016/j.optcom.2016.01.066

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20161702282318

Title:Single-walled carbon nanotube saturable absorber for a diode-pumped passively mode-locked Nd,Y:SrF2laser

Authors:Li, Chun (1); Cai, Wei (1); Liu, Jie (1); Su, Liangbi (2); Jiang, Dapeng (2); Ma, Fengkai (2); Zhang, Qian (2); Xu, Jun (3); Wang, Yonggang (4)

Author affiliation:(1) Shandong Provincial Key Laboratory of Optics and Photonic Device, School of Physics and Electronics, Shandong Normal University, Jinan, China; (2) Key Laboratory of Transparent and Opto-functional Inorganic Materials, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, China; (3) School of Physics Science and Engineering, Institute for Advanced Study, Tongji University, Shanghai, China; (4) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, China

Corresponding author:Liu, Jie(jieliu@sdnu.edu.cn)

Source title:Optics Communications

Abbreviated source title:Opt Commun

Volume:372

Issue date:August 1, 2016

Publication year:2016

Pages:76-79

Language:English

ISSN:00304018

CODEN:OPCOB8

Document type:Journal article (JA)

Publisher:Elsevier

Abstract:A reflective single-walled carbon nanotube as saturable absorber has been firstly adopted to a passively mode-locked Nd,Y:SrF2crystal. Without any dispersion compensation, the stably mode-locked laser delivers pulses with pulse width as short as 1.7 ps, repetition rate of 107.8 MHz and center wavelength of 1056 nm. The oscillator produces maximum average output power of 319 mW corresponding with a high slope efficiency of 20.2%. The single pulse energy and the peak power are 2.96 nJ and 1.74 kW, respectively. The experimental results show that single-walled carbon nanotube is an excellent saturable absorber for mode-locked lasers. © 2016 Published by Elsevier B.V.

Number of references:27

Main heading:Single-walled carbon nanotubes (SWCN)

Controlled terms:Carbon nanotubes - Lasers - Mode-locked fiber lasers - Nanotubes - Passive mode locking - Pulse repetition rate - Q switched lasers - Saturable absorbers - Yarn

Uncontrolled terms:Average output power - Center wavelength - Disordered crystals - High slope efficiency - Mode-locked laser - Passively mode-locked - Single pulse energy - Single-walled carbon nanotube saturable absorbers

Classification code:744.1 Lasers, General - 761 Nanotechnology - 819.4 Fiber Products

DOI:10.1016/j.optcom.2016.04.012

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20155101708486

Title:Relevance and irrelevance graph based marginal Fisher analysis for image search reranking

Authors:Ji, Zhong (1); Pang, Yanwei (1); Yuan, Yuan (2); Pan, Jing (3)

Author affiliation:(1) School of Electronic Information Engineering, Tianjin University, Tianjin, 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, China; (3) School of Electronic Engineering, Tianjin University of Technology and Education, Tianjin, China

Corresponding author:Pang, Yanwei

Source title:Signal Processing

Abbreviated source title:Signal Process

Volume:121

Issue date:April 2016

Publication year:2016

Pages:139-152

Language:English

ISSN:01651684

CODEN:SPRODR

Document type:Journal article (JA)

Publisher:Elsevier

Abstract:Learning-to-rank techniques have shown promising results in the domain of image ranking recently, where dimensionality reduction is a critical step to overcome the "curse of dimensionality". However, conventional dimensionality reduction approaches cannot guarantee the satisfying performance because the important ranking information is ignored. This paper presents a novel "Ranking Dimensionality Reduction" scheme specifically designed for learning-to-rank based image ranking, which aims at not only discovering the intrinsic structure of data but also keeping the ordinal information. Within this scheme, a new dimensionality reduction algorithm called Relevance Marginal Fisher Analysis (RMFA) is proposed. RMFA models the proposed pairwise constraints of relevance-link and irrelevance-link into the relevance graph and the irrelevance graph, and applies the graphs to build the objective function with the idea of Marginal Fisher Analysis (MFA). Further, a semi-supervised RMFA algorithm called Semi-RMFA is developed to offer a more general solution for the real-world application. Extensive experiments are carried on two popular, real-world image search reranking datasets. The promising results demonstrate the robustness and effectiveness of the proposed scheme and methods. © 2015 Elsevier B.V.

Number of references:42

Main heading:Search engines

Controlled terms:Graphic methods - Image analysis

Uncontrolled terms:Dimensionality reduction - Image rankings - Image search reranking - Learning to rank - Marginal fisher analysis - MultiMedia Information Systems

Classification code:723 Computer Software, Data Handling and Applications

DOI:10.1016/j.sigpro.2015.11.010

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20151700776962

Title:Efficient and Robust Learning for Sustainable and Reacquisition-Enabled Hand Tracking

Authors:Abdul Aziz, Muhammad Ali (1); Niu, Jianwei (1); Zhao, Xiaoke (1); Li, Xuelong (2)

Author affiliation:(1) State Key Laboratory of Virtual Reality Technology and Systems, School of Computer Science and Engineering, Beihang University, Beijing, China; (2) Center for Optical Imagery Analysis and Learning, State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, China

Corresponding author:Niu, Jianwei(niujianwei@buaa.edu.cn)

Source title:IEEE Transactions on Cybernetics

Abbreviated source title:IEEE Trans. Cybern.

Volume:46

Issue:4

Issue date:April 2016

Publication year:2016

Pages:945-958

Article number:7088593

Language:English

ISSN:21682267

Document type:Journal article (JA)

Publisher:Institute of Electrical and Electronics Engineers Inc.

Abstract:The use of machine learning approaches for long-term hand tracking poses some major challenges such as attaining robustness to inconsistencies in lighting, scale and object appearances, background clutter, and total object occlusion/disappearance. To address these issues in this paper, we present a robust machine learning approach based on enhanced particle filter trackers. The inherent drawbacks associated with the particle filter approach, i.e., sample degeneration and sample impoverishment, are minimized by infusing the particle filter with the mean shift approach. Moreover, to instill our tracker with reacquisition ability, we propose a rotation invariant and efficient detection framework named beta histograms of oriented gradients. Our robust appearance model operates on the red, green, blue color histogram and our newly proposed rotation invariant noise compensated local binary patterns descriptor, which is a noise compensated, rotation invariant version of the local binary patterns descriptor. Through our experiments, we demonstrate that our proposed hand tracker performs favorably against state-of-the-art algorithms on numerous challenging video sequences of hand postures, and overcomes the largely unsolved problem of redetecting hands after they vanish and reappear into the frame. © 2015 IEEE.

Number of references:55

Main heading:Palmprint recognition

Controlled terms:Artificial intelligence - Graphic methods - Learning systems - Monte Carlo methods - Statistical methods

Uncontrolled terms:Appearance modeling - Efficient detection - Histograms of oriented gradients - Local binary patterns - Machine learning approaches - Particle filter trackers - Sample impoverishment - State-of-the-art algorithms

DOI:10.1109/TCYB.2015.2418275

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20151200650993

Title:A Local Structural Descriptor for Image Matching via Normalized Graph Laplacian Embedding

Authors:Tang, Jun (1); Shao, Ling (2); Li, Xuelong (3); Lu, Ke (4, 5)

Author affiliation:(1) Key Laboratory of Intelligent Computing and Signal Processing, Ministry of Education, Anhui University, Hefei, China; (2) Department of Computer Science and Digital Technologies, Northumbria University, Newcastle upon Tyne, United Kingdom; (3) Center for OPTical IMagery Analysis and Learning (OPTIMAL), State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Xi'an, China; (4) University of Chinese Academy of Sciences, Beijing, China; (5) Beijing Center for Mathematics and Information Interdisciplinary Sciences, Beijing, China

Source title:IEEE Transactions on Cybernetics

Abbreviated source title:IEEE Trans. Cybern.

Volume:46

Issue:2

Issue date:February 2016

Publication year:2016

Pages:410-420

Article number:7056508

Language:English

ISSN:21682267

Document type:Journal article (JA)

Publisher:Institute of Electrical and Electronics Engineers Inc.

Abstract:This paper investigates graph spectral approaches to the problem of point pattern matching. Specifically, we concentrate on the issue of how to effectively use graph spectral properties to characterize point patterns in the presence of positional jitter and outliers. A novel local spectral descriptor is proposed to represent the attribute domain of feature points. For a point in a given point-set, weight graphs are constructed on its neighboring points and then their normalized Laplacian matrices are computed. According to the known spectral radius of the normalized Laplacian matrix, the distribution of the eigenvalues of these normalized Laplacian matrices is summarized as a histogram to form a descriptor. The proposed spectral descriptor is finally combined with the approximate distance order for recovering correspondences between point-sets. Extensive experiments demonstrate the effectiveness of the proposed approach and its superiority to the existing methods. © 2013 IEEE.

Number of references:46

Main heading:Laplace transforms

Controlled terms:Eigenvalues and eigenfunctions - Geometry - Image matching - Matrix algebra - Pattern matching

Uncontrolled terms:Graph-spectral approach - Neighboring point - Normalized graph Laplacian - Normalized Laplacian - Point pattern matching - Point patterns - Spectral properties - Structural descriptor

DOI:10.1109/TCYB.2015.2402751

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20151400716652

Title:Principal Component 2-D Long Short-Term Memory for Font Recognition on Single Chinese Characters

Authors:Tao, Dapeng (1); Lin, Xu (2); Jin, Lianwen (2); Li, Xuelong (3)

Author affiliation:(1) School of Information Science and Engineering, Yunnan University, Kunming, China; (2) School of Electronic and Information Engineering, South China University of Technology, Guangzhou, China; (3) Center for OPTical IMagery Analysis and Learning (OPTIMAL), State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, Shaanxi, China

Source title:IEEE Transactions on Cybernetics

Abbreviated source title:IEEE Trans. Cybern.

Volume:46

Issue:3

Issue date:March 2016

Publication year:2016

Pages:756-765

Article number:7073574

Language:English

ISSN:21682267

Document type:Journal article (JA)

Publisher:Institute of Electrical and Electronics Engineers Inc.

Abstract:Chinese character font recognition (CCFR) has received increasing attention as the intelligent applications based on optical character recognition becomes popular. However, traditional CCFR systems do not handle noisy data effectively. By analyzing in detail the basic strokes of Chinese characters, we propose that font recognition on a single Chinese character is a sequence classification problem, which can be effectively solved by recurrent neural networks. For robust CCFR, we integrate a principal component convolution layer with the 2-D long short-term memory (2DLSTM) and develop principal component 2DLSTM (PC-2DLSTM) algorithm. PC-2DLSTM considers two aspects: 1) the principal component layer convolution operation helps remove the noise and get a rational and complete font information and 2) simultaneously, 2DLSTM deals with the long-range contextual processing along scan directions that can contribute to capture the contrast between character trajectory and background. Experiments using the frequently used CCFR dataset suggest the effectiveness of PC-2DLSTM compared with other state-of-the-art font recognition methods. © 2015 IEEE.

Number of references:59

Main heading:Principal component analysis

Controlled terms:Brain - Character recognition - Convolution - Optical character recognition - Recurrent neural networks

Uncontrolled terms:Chinese characters - Font recognition - Intelligent applications - Long short term memory - Principal Components - Scan direction - Sequence classification - State of the art

DOI:10.1109/TCYB.2015.2414920

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20164903095211

Title:The impact of fabrication errors of double-layer BOE on diffraction efficiency

Authors:Ma, Zebin (1, 2); Kang, Fuzeng (1); Wang, Hao (1, 2)

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

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

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:9685

Monograph title:8th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Design, Manufacturing, and Testing of Micro- and Nano-Optical Devices and Systems; and Smart Structures and Materials

Issue date:2016

Publication year:2016

Article number:96850H

Language:English

ISSN:0277786X

E-ISSN:1996756X

CODEN:PSISDG

ISBN-13:9781628419207

Document type:Conference article (CA)

Conference name:8th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Design, Manufacturing, and Testing of Micro- and Nano-Optical Devices and Systems; and Smart Structures and Materials, AOMATT 2016

Conference date:April 26, 2016 - April 29, 2016

Conference location:Suzhou, China

Conference code:124820

Sponsor:Chinese Academy of Sciences, Institute of Optics and Electronics (IOE); The Chinese Optical Society (COS)

Publisher:SPIE

Abstract:With the development of optical technology, optical instruments become smaller and more integrated. Because of the high diffraction efficiency and light weight, binary optical elements become more and more popular. Binary optical elements can only blaze at one wavelength, it has high diffraction efficiency at design wavelength. But the diffraction efficiency of binary optical elements will decrease quickly with the change of wavelength. And this situation will have a big impact on image quality. Since double-layer BOE can blaze at two wavelengths, it has high diffraction efficiency at wide spectral bandwidth. There are kinds of fabrication errors. Based on scalar diffraction theory, this paper analyzes the diffraction efficiency of double-layer BOE with fabrication errors and simulates it in MATLAB. Simulation shows the diffraction efficiency decreases quickly if the depth errors of two layers are opposite, and this situation should be avoided. As for periodic errors, tilt errors and angular errors, these fabrication errors have different impact of double-layer BOE on diffraction efficiency. © 2016 SPIE.

Number of references:18

Main heading:Diffraction

Controlled terms:Bins - Diffraction efficiency - Diffractive optical elements - Efficiency - Errors - Fabrication - Manufacture - Materials testing - MATLAB - Optical devices - Optical instruments

Uncontrolled terms:Binary optical element - Design wavelength - Double layers - Fabrication errors - Optical technology - Periodic errors - Scalar diffraction theory - Spectral bandwidth

Classification code:694.4 Storage - 741.3 Optical Devices and Systems - 913.1 Production Engineering - 913.4 Manufacturing - 921 Mathematics - 941.3 Optical Instruments - 951 Materials Science

DOI:10.1117/12.2242497

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20165003113966

Title:The effect analysis of conic coefficient error based on data measured from Talysurf and simulation of Zernike coefficients

Authors:Kai, Jiang (1); Liu, Kai (1); Song, Chong (1); Peng, Qiu (1); Peng, Wang (1); Li, Gang (1)

Author affiliation:(1) Photoelectric Track and Measurement Technology Research Department, Xi'an Institute of Optics and Precision Mechanics, CAS, Shaanxi Xi'an; 710119, China

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

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:9684

Monograph title:8th International Symposium on Advanced Optical Manufacturing and Testing Technology: Optical Test, Measurement Technology, and Equipment

Issue date:2016

Publication year:2016

Article number:96843C

Language:English

ISSN:0277786X

E-ISSN:1996756X

CODEN:PSISDG

ISBN-13:9781628419191

Document type:Conference article (CA)

Conference name:8th International Symposium on Advanced Optical Manufacturing and Testing Technology: Optical Test, Measurement Technology, and Equipment, AOMATT 2016

Conference date:April 26, 2016 - April 29, 2016

Conference location:Suzhou, China

Conference code:124817

Sponsor:Chinese Academy of Sciences, Institute of Optics and Electronics (IOE); The Chinese Optical Society (COS)

Publisher:SPIE

Abstract:Derivation of the conic coefficient error of practical aspheric optic surface is quite significant to aspheric machining accuracy, optical system imaging quality analysis and decomposition analysis of optical lenses. The primary mirror of R-c telescope system was tested by Taylor Hobson Talysurf. The practical surface was fitted using Zernike polynomials based on the date measured from Talysurf. Though taking the Zernike coefficients into the optical system, the effect of the aberration which was brought by optical machining to the optical system imaging quality was obtained. The analysis shows that the spherical aberration was brought into the optical system because of the figure error of the primary mirror. And the value of the spherical aberration was same to the practical alignment result. Then the conicoid aspherical degree of the primary mirror was tested by the Talysurf. The machining deviation of the conic coefficient was gotten though comparing the conicoid aspherical degree of the practical primary mirror with that of the perfect primary mirror. The practical conic coefficient was calculated by the deviation. Taking the practical conic coefficient into the R-c telescope system, the degradation of the optical system imaging quality was known. Also the spherical aberration was brought into the optical system. Experimental results show that the value of the spherical aberration analyzed by the two methods is same and consist with the practical alignment result. That is to say that the conic coefficient changed due to machining error of the conicoid aspherical degree. Because of the change the spherical aberration was attached to primary mirror. And which caused the optical system imaging quality declined. Finally, corrector was designed to balance the spherical aberration of the primary mirror. Ensure that the optical system imaging quality meet the requirement. © 2016 SPIE.

Number of references:6

Main heading:Optical systems

Controlled terms:Aberrations - Aspherics - Errors - Lenses - Machining - Manufacture - Mirrors - Optical design - Optical testing - Quality control - Spheres - Telescopes

Uncontrolled terms:Conic Coefficient - Contourgraph - Decomposition analysis - Machining Accuracy - Spherical aberrations - Telescope system - Zernike coefficient - Zernike polynomials

Classification code:604.2 Machining Operations - 741.1 Light/Optics - 741.3 Optical Devices and Systems - 913.3 Quality Assurance and Control - 913.4 Manufacturing

DOI:10.1117/12.2242968

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20164903095205

Title:Self-deployable structure designed for space telescope for microsatellite application

Authors:Zhao, Chao (1); Li, Chuang (2); Zhou, Nan (2); Liao, Hongqiang (1)

Author affiliation:(1) Institute of Systems Engineering, China Academy of Engineering Physics, Mianyang; 621000, China; (2) Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China

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

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:9685

Monograph title:8th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Design, Manufacturing, and Testing of Micro- and Nano-Optical Devices and Systems; and Smart Structures and Materials

Issue date:2016

Publication year:2016

Article number:96850B

Language:English

ISSN:0277786X

E-ISSN:1996756X

CODEN:PSISDG

ISBN-13:9781628419207

Document type:Conference article (CA)

Conference name:8th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Design, Manufacturing, and Testing of Micro- and Nano-Optical Devices and Systems; and Smart Structures and Materials, AOMATT 2016

Conference date:April 26, 2016 - April 29, 2016

Conference location:Suzhou, China

Conference code:124820

Sponsor:Chinese Academy of Sciences, Institute of Optics and Electronics (IOE); The Chinese Optical Society (COS)

Publisher:SPIE

Abstract:With the gradual development of micro-satellite technology and the extension of application field of earth observation technology, researchers show more concern and attention on how to obtain high-resolution images with microsatellite platform equipped with space telescope. Such microsatellites require the space telescopes with small volume, low mass, and low cost. Deployable telescope is a good choice to meet these requirements, and it has the same capabilities as the traditional space telescope. We investigate a space telescope with smart self-deployable structure. The telescope is folded before launch, the distance between primary mirror and secondary mirror becomes short and the volume of the telescope becomes small, and the telescope extends to its working configuration after it is in orbit. The deployable structure is one of the key techniques of deployable space telescope, and this paper focuses on the design of a self-deployable structure of the secondary mirror. There are mainly three parts in this paper. Firstly, the optics of the telescope is presented, and a Ritchey-Chretien (RC) type optical system is designed. Secondly, the self-deployable structure is designed and the finite element method (FEM) is used to analyze dynamics of the extended telescope. Thirdly, an adjusting mechanism with six degrees of freedom to correct the misalignment of the secondary mirror is investigated, and the kinematics is discussed. © 2016 SPIE.

Number of references:9

Main heading:Earth (planet)

Controlled terms:Degrees of freedom (mechanics) - DNA sequences - Finite element method - Manufacture - Materials testing - Mirrors - Optical devices - Optical systems - Orbits - Space telescopes

Uncontrolled terms:Deployable structure - Deployable telescopes - Earth Observation Technology - High resolution image - Micro satellite - Micro-satellite platforms - Self-deployable - Six degrees of freedom

Classification code:461.2 Biological Materials and Tissue Engineering - 537.1 Heat Treatment Processes - 741.3 Optical Devices and Systems - 921.6 Numerical Methods - 931.1 Mechanics - 951 Materials Science

DOI:10.1117/12.2242957

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20164903096456

Title:Annular-force-based variable curvature mirror combined with multi-point actuation array to improve the surface figure accuracy: A prototype design

Authors:Zhao, Hui (1); Xie, Xiaopeng (2); Ren, Guorui (1); Du, Yunfei (1); Liu, Meiying (1); Wei, Jingxuan (3)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics of CAS, Xi'an; 710119, China; (2) Graduate School of University of Chinese Academy of Sciences, Beijing; 100049, China; (3) School of Computer Science and Technology, Xidian University, Xi'an; 710071, China

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

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:9683

Monograph title:8th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies

Issue date:2016

Publication year:2016

Article number:96831V

Language:English

ISSN:0277786X

E-ISSN:1996756X

CODEN:PSISDG

ISBN-13:9781628419184

Document type:Conference article (CA)

Conference name:8th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies, AOMATT 2016

Conference date:April 26, 2016 - April 29, 2016

Conference location:Suzhou, China

Conference code:124816

Sponsor:Chinese Academy of Sciences, Institute of Optics and Electronics (IOE); The Chinese Optical Society (COS)

Publisher:SPIE

Abstract:In recent years, a novel optical zooming technique has been paid much attention. With the help of optical leveraging effect, it is possible to alter the system focal length dramatically without moving elements involved in by only changing the curvature radius of VCM (variable curvature mirror) slightly. With no doubt, VCM is the key to realize non-moving element optical zooming and it has to provide large enough saggitus variation while still maintaining the high surface figure accuracy to ensure high quality imaging. In our previously published paper, an annular force based VCM has been designed, fabricated and tested. Experiments demonstrate that with the aperture of 100mm and thickness of 2mm, the VCM could generate a large saggitus variation exceeding 30 (=632.8nm). However, the optical quality degrades very fast and this makes such a VCM unsuitable for optical imaging in visible band. Therefore in this manuscript, a multipoint actuation array, which is composed of totally 49 piezoelectric actuators, is embedded into the annular structure to aim to correct the surface figure distortion caused by large saggitus variation. The new structure model has been designed and numerical simulation indicates that the surface figure distortion could be well corrected as long as the degraded surface figure accuracy is better than 1.8 (=632.8nm) (RMS). Based on this, a new prototype VCM is being fabricated and intermediate results are reported here. © 2016 SPIE.

Number of references:14

Main heading:Piezoelectric actuators

Controlled terms:Boundary integral equations - Manufacture - Mirrors - Piezoelectricity

Uncontrolled terms:High-quality imaging - Intermediate results - Optical qualities - Piezoelectric actuation - Saggitus variation - Structure modeling - Surface figure accuracies - Variable curvature mirror

Classification code:537.1 Heat Treatment Processes - 701.1 Electricity: Basic Concepts and Phenomena - 732 Control Devices - 741.3 Optical Devices and Systems - 921.2 Calculus

Numerical data indexing:Size 1.00e-01m, Size 2.00e-03m

DOI:10.1117/12.2242256

Funding Details: Acronym; Sponsor: NSFC; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20165003118622

Title:Analysis on deployment error of segmented mirror optical system

Authors:Wang, Chenchen (1, 2); Zou, Gangyi (1, 2); Pang, Zhihai (1); Li, Ruichang (1, 2); Fan, Xuewu (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) University of Chinese Academy of Sciences, Beijing; 100049, China

Source title:Guangxue Xuebao/Acta Optica Sinica

Abbreviated source title:Guangxue Xuebao

Volume:36

Issue:11

Issue date:November 10, 2016

Publication year:2016

Article number:1122005

Language:Chinese

ISSN:02532239

CODEN:GUXUDC

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:The main method to improve the resolution of optical system is enlarging the pupil of the optical system, and segmenting sub-mirrors to get an equivalent large diameter primary mirror is a common way to enlarge clear aperture. After the deployment of sub-mirrors for segmented mirrors optical system on orbit, there is deviation between deployment position and the designed position, which is called position error. The error determines the imaging quality of the optical system. So it is necessary to analyze the precision of the position of sub-mirrors. Optical software is used to model the segmented mirror optical system, and the relationship curves between position error and the system's imaging quality is got by adjusting position error of six degrees of freedom for sub-mirrors. The results show that root mean square (RMS) values generated by the same position error are different when sub-mirrors are at the different positions. The middle mirrors are sensitive to the movement along X axis direction, and the outer ones are sensitive to the movement along the Y axis direction. Two methods are used to distribute the errors into the sub-mirror position error. One is distributing the position error to each sub-mirror alone. Another is distributing the same position error to each sub-mirror. The results show that the former way has a more relax position error when the generated wavefront errors are the same. © 2016, Chinese Lasers Press. All right reserved.

Number of references:21

Page count:8

Main heading:Optical systems

Controlled terms:Degrees of freedom (mechanics) - Errors - Mirrors - Optical design - Wavefronts

Uncontrolled terms:Optical software - Piston errors - Position errors - Root mean square values - Segmented mirror - Six degrees of freedom - Tilt errors - Wavefront errors

Classification code:741.1 Light/Optics - 741.3 Optical Devices and Systems - 931.1 Mechanics

DOI:10.3788/AOS201636.1122005

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20164502988927

Title:Optical micro-manipulation based on spatial modulation of optical fields

Authors:Liang, Yansheng (1); Yao, Baoli (1); Lei, Ming (1); Yan, Shaohui (1); Yu, Xianghua (1); Li, Manman (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:Yao, Baoli(yaobl@opt.ac.cn)

Source title:Guangxue Xuebao/Acta Optica Sinica

Abbreviated source title:Guangxue Xuebao

Volume:36

Issue:10

Issue date:October 10, 2016

Publication year:2016

Article number:1026003

Language:Chinese

ISSN:02532239

CODEN:GUXUDC

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:Optical tweezers has become a powerful tool for research in life science and colloidal physics since its invention due to its advantages of mechanical contact-free and high-precision manipulation of micro-sized particles. However, the conventional single-trap optical tweezers is limited in the increasing demands of research. In recent years, the technique of spatial modulation of optical fields, which modulates the amplitude, phase and polarization state of light, has extensively enhanced the function of optical micro-manipulation, and promoted the advance in laser micro/nano fabricaton, optical sorting and transportation of micro-particles, and colloidal particles studies. The advance in spatial modulation of optical fields to date and their applications in optical micro-manipulation is reviewed, including the holographic optical tweezers, special-mode optical beams manipulation, and vector beams manipulation. © 2016, Chinese Lasers Press. All right reserved.

Number of references:91

Page count:14

Main heading:Optical tweezers

Controlled terms:Holography - Light modulation - Micromanipulators - Modulation - Screening

Uncontrolled terms:Holographic optical tweezers - Optical field - Optical micromanipulation - Opticaltrapping - Special-mode beams - Vector beams

Classification code:741.1 Light/Optics - 743 Holography - 744.9 Laser Applications - 746 Imaging Techniques - 802.3 Chemical Operations

DOI:10.3788/AOS201636.1026003

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20164502990952

Title:Thermally accelerated ageing test of 808nm high power diode laser arrays in CW mode

Authors:Nie, Zhiqiang (1); Wu, Di (2); Lu, Yao (1); Wu, Dhai (1); Wang, Shuna (1); Zhang, Pu (1); Xiong, Lingling (1); Li, Xiaoning (2); Shen, Zenan (2)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Shaanxi, China; (2) Focuslight Technologies Co. LTD, Xi'an, Shaanxi, China

Source title:2016 17th International Conference on Electronic Packaging Technology, ICEPT 2016

Abbreviated source title:Int. Conf. Electron. Packag. Technol., ICEPT

Monograph title:2016 17th International Conference on Electronic Packaging Technology, ICEPT 2016

Issue date:October 4, 2016

Publication year:2016

Pages:111-115

Article number:7583100

Language:English

ISBN-13:9781509013968

Document type:Conference article (CA)

Conference name:17th International Conference on Electronic Packaging Technology, ICEPT 2016

Conference date:August 16, 2016 - August 19, 2016

Conference location:Wuhan, China

Conference code:124156

Publisher:Institute of Electrical and Electronics Engineers Inc.

Abstract:The reliability is the important performance of high power semiconductor laser. Thermally accelerated ageing test is an important technology of lifetime evaluation and reliability analysis. In this study, three groups of thermally accelerated ageing tests of conduction-cooled-packaged 60W 808nm high power diode laser arrays packaged by Indium solder at constant current have been carried out. Analysis of ageing data suggest the extrapolated lifetime under room temperature to value device reliability. We also analyze and discuss the degradation modes. This work can provide guidance for optimizing the chip and package structure, is helpful for improving performance and enhancing reliability of high power semiconductor lasers. © 2016 IEEE.

Number of references:13

Main heading:Semiconductor lasers

Controlled terms:Chip scale packages - Defects - Degradation - Electronics packaging - High power lasers - Laser beam welding - Power semiconductor diodes - Reliability - Reliability analysis - Semiconductor diodes

Uncontrolled terms:Accelerated ageing tests - Device reliability - High power - High power semiconductor laser - High-power diode laser arrays - Improving performance - Lifetime evaluation - Provide guidances

Classification code:714.2 Semiconductor Devices and Integrated Circuits - 744 Lasers - 802.2 Chemical Reactions - 951 Materials Science

Numerical data indexing:Size 8.08e-07m

DOI:10.1109/ICEPT.2016.7583100

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20161902345640

Title:Action recognition by joint learning

Authors:Yuan, Yuan (1); Qi, Lei (1); Lu, Xiaoqiang (1)

Author affiliation:(1) Center for OPTical IMagery Analysis and Learning (OPTIMAL), Chinese Academy of Sciences State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Xi'an; Shaanxi; 710119, China

Corresponding author:Lu, Xiaoqiang(luxq666666@gmail.com)

Source title:Image and Vision Computing

Abbreviated source title:Image Vision Comput

Volume:55

Issue date:November 1, 2016

Publication year:2016

Pages:77-85

Language:English

ISSN:02628856

CODEN:IVCODK

Document type:Journal article (JA)

Publisher:Elsevier Ltd

Abstract:Due to the promising applications including video surveillance, video annotation, and interaction gaming, human action recognition from videos has attracted much research interest. Although various works have been proposed for human action recognition, there still exist many challenges such as illumination condition, viewpoint, camera motion and cluttered background. Extracting discriminative representation is one of the main ways to handle these challenges. In this paper, we propose a novel action recognition method that simultaneously learns middle-level representation and classifier by jointly training a multinomial logistic regression (MLR) model and a discriminative dictionary. In the proposed method, sparse code of low-level representation, conducting as latent variables of MLR, can capture the structure of low-level feature and thus is more discriminate. Meanwhile, the training of dictionary and MLR model are integrated into one objective function for considering the information of categories. By optimizing this objective function, we can learn a discriminative dictionary modulated by MLR and a MLR model driven by sparse coding. The proposed method is evaluated on YouTube action dataset and HMDB51 dataset. Experimental results demonstrate that our method is comparable with mainstream methods. © 2016 Elsevier B.V.

Number of references:40

Main heading:Motion estimation

Controlled terms:Codes (symbols) - Computer vision - Gesture recognition - Motion analysis - Regression analysis - Security systems

Uncontrolled terms:Action recognition - Discriminative dictionaries - Human-action recognition - Illumination conditions - Joint learning - Low level representation - Multinomial logistic regression - Sparse coding

DOI:10.1016/j.imavis.2016.04.001

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20164703027225

Title:50 μj Femtosecond Laser System Based on Strictly All-Fiber CPA Structure

Authors:Li, Feng (1, 2, 3); Yang, Zhi (1); Zhao, Wei (1, 3); Li, Qianglong (1); Zhang, Xin (1, 2); Yang, Xiaojun (1); Zhang, Wei (1); Wang, Yishan (1, 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) University of Chinese Academy of Sciences, Beijing; 100049, China; (3) Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan; 030006, China

Corresponding author:Li, Feng(laserlifeng@opt.cn)

Source title:IEEE Photonics Journal

Abbreviated source title:IEEE Photon. J.

Volume:8

Issue:5

Issue date:October 2016

Publication year:2016

Article number:7588072

Language:English

ISSN:19430655

Document type:Journal article (JA)

Publisher:Institute of Electrical and Electronics Engineers Inc.

Abstract:We demonstrate a strictly all-polarization maintaining, all-fiber chirped pulse amplification of ultrashort pulses. Pulses with the duration of 933 fs and energy as high as 50 μJ are achieved at 200 kHz repetition rate in a compact size. The variations of the spectra and pulse widths as functions of the amplified output power have also been presented. To our best knowledge, this is the highest energy extracted from the strictly all-fiber chirped pulse amplification system. The environmentally stable femtosecond laser source will find various applications in practice. © 2016 IEEE.

Number of references:13

Main heading:Ultrashort pulses

Controlled terms:Chirp modulation - Fiber amplifiers - Fibers - Photonic crystal fibers - Pulse repetition rate

Uncontrolled terms:Chirped pulse amplification systems - Chirped pulse amplifications - Compact size - Femtosecond laser system - Output power - Polarization maintaining - Pulsewidths - Repetition rate

Classification code:716 Telecommunication; Radar, Radio and Television - 744.1 Lasers, General - 744.4 Solid State Lasers - 951 Materials Science

Numerical data indexing:Energy 5.00e-05J, Frequency 2.00e+05Hz, Time 9.33e-13s

DOI:10.1109/JPHOT.2016.2614600

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20164703047424

Title:Pressurization actuation based variable curvature mirror having variable thickness

Authors:Zhao, Hui (1); Xie, Xiao-Peng (1, 2); Xu, Liang (1); Ding, Jiao-Teng (1); Liu, Mei-Ying (1); Fan, Xue-Wu (1)

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

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:45

Issue:11

Issue date:November 1, 2016

Publication year:2016

Article number:1122001

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:Based on the model of annular force based actuation, the reasons why it is hard for annular force based variable curvature mirror to obtain a large saggitus variation and maintain a high-accuracy surface figure simultaneously were analyzed. From the elasticity theory of thin plate, a physical model of variable curvature mirror in which pressurization actuation and variable thickness design are combined together was proposed. The theoretical analysis results show that, by making the mirror thickness be variable from the center to the periphery portion and adopting the pressurization actuation, the large saggitus variation can be obtained while the surface figure accuracy can be maintained and higher than the annular line load variable curvature mirror. A duralumin prototype mirror was designed, fabricated and tested. The surface figure accuracy of the mirror before curvature variation is superior to λ/50 (632.8 nm). When a pressure of about 0.032 MPa is imposed, the mirror can provide a saggitus variation exceeding 22 μm and at the same the corresponding surface figure accuracy is still superior to λ/20 (632.8 nm), which verifies the theoretical analysis about variable thickness mirror and proves that the design combination integrating pressurization actuation and variable mirror thickness is a promising technical way to construct an applicable variable curvature mirror. © 2016, Science Press. All right reserved.

Number of references:17

Main heading:Mirrors

Controlled terms:Elasticity - Optical design - Pressurization - Thickness control

Uncontrolled terms:Curvature variation - Elasticity theory - Mirror thickness - Optical zooming - Surface figure accuracies - Thin plate - Variable curvature mirror - Variable thickness

Classification code:731.3 Specific Variables Control - 741.1 Light/Optics - 741.3 Optical Devices and Systems

Numerical data indexing:Pressure 3.20e+04Pa, Size 2.20e-05m, Size 6.33e-07m

DOI:10.3788/gzxb20164511.1122001

Funding Details: Number; Acronym; Sponsor: 61105017; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 61107008; NSFC; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20163502747300

Title:Thermal/structural/optical integrated design for optical sensor mounted on unmanned aerial vehicle

Authors:Zhang, Gaopeng (1); Yang, Hongtao (1, 2); Mei, Chao (1); Wu, Dengshan (1); Shi, Kui (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; 100864, China

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

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:9796

Monograph title:Selected Papers of the Photoelectronic Technology Committee Conferences held November 2015

Issue date:2016

Publication year:2016

Article number:97962R

Language:English

ISSN:0277786X

E-ISSN:1996756X

CODEN:PSISDG

ISBN-13:9781628418811

Document type:Conference article (CA)

Conference name:International Symposia on Atmosphere Optics and Adaptive Optics, Testing and Driving of Laser Fusion Energy Technology, High-performance Special Optical Film Technology, Novel Navigation Technology, Monitoring, Early Warning, Removal Technology of Space Targets and Debris, and UAV Payload Technology

Conference date:November 15, 2015 - November 28, 2015

Conference location:Chengdu and Suzhou, China

Conference code:121285

Sponsor:Chinese Academy of Engineering; Chinese Society for Optical Engineering; National Natural Science Foundation of China

Publisher:SPIE

Abstract:With the rapid development of science and technology and the promotion of many local wars in the world, altitude optical sensor mounted on unmanned aerial vehicle is more widely applied in the airborne remote sensing, measurement and detection. In order to obtain high quality image of the aero optical remote sensor, it is important to analysis its thermal-optical performance on the condition of high speed and high altitude. Especially for the key imaging assembly, such as optical window, the temperature variation and temperature gradient can result in defocus and aberrations in optical system, which will lead to the poor quality image. In order to improve the optical performance of a high speed aerial camera optical window, the thermal/structural/optical integrated design method is developed. Firstly, the flight environment of optical window is analyzed. Based on the theory of aerodynamics and heat transfer, the convection heat transfer coefficient is calculated. The temperature distributing of optical window is simulated by the finite element analysis software. The maximum difference in temperature of the inside and outside of optical window is obtained. Then the deformation of optical window under the boundary condition of the maximum difference in temperature is calculated. The optical window surface deformation is fitted in Zernike polynomial as the interface, the calculated Zernike fitting coefficients is brought in and analyzed by CodeV Optical Software. At last, the transfer function diagrams of the optical system on temperature field are comparatively analyzed. By comparing and analyzing the result, it can be obtained that the optical path difference caused by thermal deformation of the optical window is 138.2 nm, which is under PV ≤1/4λ. The above study can be used as an important reference for other optical window designs. © 2016 SPIE.

Number of references:10

Main heading:Adaptive optics

Controlled terms:Aerodynamic heating - Aerodynamics - Deformation - Design - Finite element method - Heat convection - Heat transfer - Optical design - Optical sensors - Optical systems - Quality control - Remote sensing - Space debris - Temperature - Unmanned aerial vehicles (UAV) - Vehicles

Uncontrolled terms:Airborne remote sensing - Development of science and technologies - Finite element analysis software - Optical path difference - Optical remote sensors - Optical window - Temperature distributing - Thermal/structural/optical integrated

Classification code:641.1 Thermodynamics - 641.2 Heat Transfer - 651.1 Aerodynamics, General - 652.1 Aircraft, General - 656.1 Space Flight - 741.1 Light/Optics - 741.3 Optical Devices and Systems - 913.3 Quality Assurance and Control - 921.6 Numerical Methods

Numerical data indexing:Size 1.38e-07m

DOI:10.1117/12.2229726

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20163702799781

Title:Low-penalty up to 16-QAM wavelength conversion in a low loss CMOS compatible spiral waveguide

Authors:Da Ros, Francesco (1); Porto Da Silva, Edson (1); Zibar, Darko (1); Chu, Sai T. (2); Little, Brent E. (3); Morandotti, Roberto (4); Galili, Michael (1); Moss, David J. (5); Oxenlewe, Leif K. (1)

Author affiliation:(1) DTU Fotonik, Technical University of Denmark, DTU, Kongens Lyngby; 2800, Denmark; (2) Department of Physics and Materials Science, City University of Hong Kong, Hong Kong; (3) Xi'An Institute of Optics and Precision Mechanics, CAS, Xi'an, China; (4) INSR - Énergie, Matériaux et Télécommunications, 1650 Blvd Lionel Boulet, Varennes; QC; J3X1S2, Canada; (5) School of Electrical and Computer Engineering, RMIT University, Melbourne; VIC; 3001, Australia

Source title:2016 Optical Fiber Communications Conference and Exhibition, OFC 2016

Abbreviated source title:Opt. Fiber Commun. Conf. Exhib., OFC

Monograph title:2016 Optical Fiber Communications Conference and Exhibition, OFC 2016

Issue date:August 9, 2016

Publication year:2016

Article number:7537565

Language:English

ISBN-13:9781943580071

Document type:Conference article (CA)

Conference name:2016 Optical Fiber Communications Conference and Exhibition, OFC 2016

Conference date:March 20, 2016 - March 24, 2016

Conference location:Anaheim, CA, United states

Conference code:123294

Publisher:Institute of Electrical and Electronics Engineers Inc.

Abstract:Wavelength conversion of 32-Gbaud QPSK and 10-Gbaud 16-QAM is demonstrated using a 50-cm long low loss spiral Hydex-glass waveguide. BER < HD-FEC threshold is achieved over 10 nm bandwidth with OSNR penalty < 0.5 dB. © 2016 OSA.

Number of references:17

Main heading:Optical fiber communication

Controlled terms:CMOS integrated circuits - Optical fibers - Waveguides

Uncontrolled terms:CMOS Compatible - Glass waveguides - Low-loss - Spiral waveguides

Classification code:714.2 Semiconductor Devices and Integrated Circuits - 714.3 Waveguides - 717.1 Optical Communication Systems - 741.1.2 Fiber Optics

Numerical data indexing:Decibel 5.00e-01dB, Size 1.00e-08m, Size 5.00e-01m

Funding Details: Acronym; Sponsor: ARC; Australian Research Council - Acronym; Sponsor: DNRF; Danish National Research Foundation

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20163402737299

Title:A phase estimation algorithm for optical linear sampling

Authors:Li, Fei-Tao (1, 2); Zhao, Wei (1); Liu, Yuan-Shan (1)

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

Corresponding author:Liu, Yuan-Shan(yuanshanliu@yahoo.com)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:45

Issue:8

Issue date:August 1, 2016

Publication year:2016

Article number:0806002

Language:English

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:An improved Blind Phase Search algorithm was proposed. In this algorithm, carrier phase noise was estimated by searching minimum Euler distance twice. To verify this algorithm, an optical linear sampling simulation system was set up. The constellation diagram of 10Gbaud/s 16QAM signal was simulated by using an optical frequency comb with pulse width of 500fs and duration of 10ns as optical sampling source. The simulation result shows that, the phase noise between the signal source and optical sampling source can be compensated effectively by this algorithm when the sum linewidth of the two lasers is less than 10MHz. Finally, the constellation diagram of 10Gbaud/s 16QAM signal is displayed clearly. © 2016, Science Press. All right reserved.

Number of references:21

Page count:8

Main heading:Algorithms

Controlled terms:Digital signal processing - Modulation - Optical communication - Phase noise - Quadrature amplitude modulation - Signal processing - Signal sampling

Uncontrolled terms:Carrier phase - Constellation diagrams - Linear sampling - Optical coherent communications - Optical frequency combs - Optical sampling - Phase estimation algorithms - Search Algorithms

Classification code:701.2 Magnetism: Basic Concepts and Phenomena - 716.1 Information Theory and Signal Processing - 717.1 Optical Communication Systems - 922 Statistical Methods

Numerical data indexing:Frequency 1.00e+07Hz, Time 1.00e-08s, Time 5.00e-13s

DOI:10.3788/gzxb20164508.0806002

Funding Details: Number; Acronym; Sponsor: 61275164; NSFC; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:5014298

Title:A non-negative low-rank representation for hyperspectral band selection

Authors:Feng, Yachuang (1, 2); Yuan, Yuan (1); Lu, Xiaoqiang (1)

Author affiliation:(1) Center for OPTical IMagery Analysis and Learning (OPTIMAL), State Key Laboratory of Transient Optics and Photonics, Xi’an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi’an, China; (2) University of the Chinese Academy of Sciences, Beijing, China

Corresponding author:Lu, Xiaoqiang(luxiaoqiang@opt.ac.cn)

Source title:International Journal of Remote Sensing

Abbreviated source title:Int. J. Remote Sens.

Volume:37

Issue:19

Issue date:October 1, 2016

Publication year:2016

Pages:4590-4609

Language:English

ISSN:01431161

E-ISSN:13665901

CODEN:IJSEDK

Document type:Journal article (JA)

Publisher:Taylor and Francis Ltd.

Abstract:Hyperspectral images are widely used in real applications due to their rich spectral information. However, the large volume brings a lot of inconvenience, such as storage and transmission. Hyperspectral band selection is an important technique to cope with this issue by selecting a few spectral bands to replace the original image. This article proposes a novel band selection algorithm that first estimates the redundancy through analysing relationships among spectral bands. After that, spectral bands are ranked according to their relative importance. Subsequently, in order to remove redundant spectral bands and preserve the original information, a maximal linearly independent subset is constructed as the optimal band combination. Contributions of this article are listed as follows: (1) A new strategy for band selection is proposed to preserve the original information mostly; (2) A non-negative low-rank representation algorithm is developed to discover intrinsic relationships among spectral bands; (3) A smart strategy is put forward to adaptively determine the optimal combination of spectral bands. To verify the effectiveness, experiments have been conducted on both hyperspectral unmixing and classification. For unmixing, the proposed algorithm decreases the average root mean square errors (RMSEs) by 0.05, 0.03, and 0.05 for the Urban, Cuprite, and Indian Pines data sets, respectively. With regard to classification, our algorithm achieves the overall accuracies of 77.07% and 89.19% for the Indian Pines and Pavia University data sets, respectively. These results are close to the performance with original images. Thus, comparative experiments not only illustrate the superiority of the proposed algorithm, but also prove the validity of band selection on hyperspectral image processing. © 2016 Informa UK Limited, trading as Taylor & Francis Group.

Number of references:52

Controlled terms:algorithm - comparative study - data set - error analysis - image analysis - image classification - spectral analysis

Classification code:71.8.5.4 Remote sensing: numerical and image analysis

DOI:10.1080/01431161.2016.1214299

Funding Details: Number; Acronym; Sponsor: 61472413; NSFC; National Natural Science Foundation of China

Database:GEOBASE

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20163902846681

Title:Mode Splitter without Changing the Mode Order in SOI Waveguide

Authors:Liao, Jianwen (1, 2, 4); Zhang, Lingxuan (1, 2, 4); Liu, Mu (1, 2, 4); Wang, Leiran (1, 2); Wang, Weiqiang (1, 2); Wang, Guoxi (1, 2); Ruan, Chi (3); Zhao, Wei (1, 2); Zhang, Wenfu (1, 2)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics (SKLTOP), Xi'An Institute of Optics and Precision Mechanics (XIOPM), Chinese Academy of Sciences (CAS), Xi'an; 710119, China; (2) China-U.K. Joint Research Center on Micro, Nano Photonics, XIOPM of CAS, Xi'an; 710119, China; (3) SKLTOP, XIOPM of CAS, Xi'an; 710119, China; (4) University of Chinese Academy of Sciences, China

Source title:IEEE Photonics Technology Letters

Abbreviated source title:IEEE Photonics Technol Lett

Volume:PP

Issue:99

Issue date:2016

Publication year:2016

Article number:7562561

Language:English

ISSN:10411135

CODEN:IPTLEL

Document type:Journal article (JA)

Publisher:Institute of Electrical and Electronics Engineers Inc.

Abstract:We proposed a mode splitter based on directional coupler (DC), which is capable of splitting the TE0 & TE1 modes without changing the mode order. It is found that high coupling efficiency (>-1 dB), low mode crosstalk (<-16 dB), wide bandwidth (~100 nm) and large fabrication tolerance (±10 nm) can be obtained by a 24.4 μm coupling length DC structure, which is composed of a strip and a slot silicon waveguide. This design represents a first step towards mode splitter without changing the mode order, which can find important potential applications, such as optical isolation and mode division multiplexing (MDM), in large scale photonic integrated circuits (PICs). © 1989-2012 IEEE.

Number of references:18

Main heading:Multiplexing

Controlled terms:Directional couplers - Optical waveguides - Waveguides

Uncontrolled terms:Coupling efficiency - Fabrication tolerances - Mode splitter - Mode-division multiplexing - Optical isolation - Photonic integrated circuits - Silicon waveguide - Slot waveguide

Classification code:714.3 Waveguides

Numerical data indexing:Size 1.00e-09m, Size 2.44e-05m

DOI:10.1109/LPT.2016.2606496

Funding Details: Number; Acronym; Sponsor: 11304375; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 11404388; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 61223007; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 61275062; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 61405243; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 61475188; NSFC; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20155201710584

Title:Hydrothermal synthesis of MoS2nanosheets films: Microstructure and formation mechanism research

Authors:Miao, Hui (1, 2); Hu, Xiaoyun (1, 2); Sun, Qian (1); Hao, Yuanyuan (1); Wu, Hao (1); Zhang, Dekai (1, 2); Bai, Jintao (1, 2); Liu, Enzhou (3); Fan, Jun (3); Hou, Xun (1, 2, 4)

Author affiliation:(1) School of Physics, Northwest University, Xi'an, China; (2) Natl. Photoelectric Technol. and Funct. Mat. and Applic. of Sci. and Technol. Intl. Cooperation Base, Northwest University, Xi'an, China; (3) School of Chemical Engineering, Northwest University, Xi'an, China; (4) State Key Laboratory of Transient Optics and Technology, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, China

Corresponding author:Hu, Xiaoyun(hxy3275@nwu.edu.cn)

Source title:Materials Letters

Abbreviated source title:Mater Lett

Volume:166

Issue date:March 1, 2016

Publication year:2016

Pages:121-124

Language:English

ISSN:0167577X

E-ISSN:18734979

CODEN:MLETDJ

Document type:Journal article (JA)

Publisher:Elsevier

Abstract:MoS2nanosheets films were successfully prepared by Ti foil assisted hydrothermal synthesis method (labeled as Ti-MoS2nanosheets films). The downside and upside of the films showed different novel morphologies with nanosheets arranged regularly and flowerlike microspheres, respectively. The samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscope (TEM). X-ray diffraction patterns showed that the peaks along (002) planes made a wide shift from 14.2° to 9.4° compared to its standard position located at 14.2° at the beginning of the hydrothermal process, then gradually returned back to its normal position with the hydrothermal treatment time going on. However, time was not the only element to influence the position of the main diffraction peaks, a relatively low hydrothermal treatment temperature could also lead to the diffraction peaks' shift. In addition, TEM images indicated that the nanosheets film with hydrothermal treatment time for 24 h had a good single-crystal structure. Otherwise, the formation mechanism was carefully discussed and a possible formation mechanism was proposed. © 2015 Elsevier B.V.

Number of references:6

Main heading:Hydrothermal synthesis

Controlled terms:Crystal growth - Crystal microstructure - Crystal structure - Microstructure - Molybdenum compounds - Nanosheets - Scanning electron microscopy - Single crystals - Synthesis (chemical) - Thin films - Transmission electron microscopy - X ray diffraction

Uncontrolled terms:Diffraction peaks - Flower-like microspheres - Formation mechanism - Hydrothermal process - Hydrothermal treatments - Its standards - Novel morphologies - TEM images

Classification code:761 Nanotechnology - 802.2 Chemical Reactions - 933 Solid State Physics - 951 Materials Science

Numerical data indexing:Time 8.64e+04s

DOI:10.1016/j.matlet.2015.12.010

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20160601889252

Title:X-ray focusing optics and its application in X-ray communication system

Authors:Liu, Duo (1, 2); Qiang, Peng-Fei (1); Li, Lin-Sen (1, 2); Su, Tong (1); Sheng, Li-Zhi (1); Liu, Yong-An (1); Zhao, Bao-Sheng (1)

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

Corresponding author:Zhao, Bao-Sheng(open@opt.ac.cn)

Source title:Wuli Xuebao/Acta Physica Sinica

Abbreviated source title:Wuli Xuebao

Volume:65

Issue:1

Issue date:January 5, 2016

Publication year:2016

Article number:010703

Language:Chinese

ISSN:10003290

CODEN:WLHPAR

Document type:Journal article (JA)

Publisher:Institute of Physics, Chinese Academy of Sciences

Abstract:X-ray communication, which was first introduced by Keith Gendreau in 2007, is potential to compete with conventional communication methods, such as microware and laser communication, against space surroundings. Researchers have spent much time and effort on the mission making the initial idea into reality in recent years. Eventually, the X-ray communication demonstration system based on the grid-controlled X-ray source and single-photon detection technique can deliver both audio and video information in a 6-meter vacuum tunnel, and the bit-error-rate performance of the communication system is analyzed. But it is difficult to implement applications in industries. The point is to find a way to reduce the signal divergence geometrical attenuation and increase the distance of the communication which can be regarded as an important foundation of future deep-space X-ray communication applications. Therefore, it is urgent to study the X-ray communication system. By using a nested X-ray focusing optics as transmitting and receiving antennas of the communication system, the signal gain and the distance of X-ray communication can be greatly improved. Specifically, the nested X-ray focusing optics is similar to the Wolter type I telescope, which is widely used in the field of X-ray astronomy. The difference between them is that the Wolter type I optics is originally proposed based on a paraboloid mirror and a hyperboloid mirror, but X-ray focusing optics, the simplified Wolter type I optics, provides a single reflection by a conical approximation mirror, and it is more suitable for X-ray communication. In this paper, aiming at the future demand of X-ray communication, the optimization and analysis of the nested X-ray focusing optics are carried out, and the recurrence relations between the layers of mirrors are derived. Reasonable initial structural parameters and structure of the optics are designed. In addition, the theoretical effective collection area is calculated. Feasibility of using the X-ray focusing optics as transmitting and receiving antennas is analyzed, and the theory and structural design of the X-ray focusing optical are discussed. Signal divergence of transmitting antenna, effective area of receiving antenna, the focal spot size, and the signal gain properties are preliminary studied. The results show that the signal divergence is about 3 mrad, and the transmit gain is 23 dB; the effective area of receiving antenna is 5700 mm2at 1.5 keV. Moreover, the focal spot diameter and the receive gain are 4.5 mm and 25 dB, respectively, and the total gain of this communication system can reach up to 48 dB. © 2016 Chinese Physical Society.

Number of references:12

Page count:6

Main heading:Focusing

Controlled terms:Antennas - Bit error rate - Mirrors - Particle beams - Receiving antennas

Uncontrolled terms:Bit error rate (BER) performance - Communication antennas - Communication application - Communication method - Conical approximations - Signal gain - Single photon detection - X-ray focusing optics

Classification code:723.1 Computer Programming - 741.3 Optical Devices and Systems - 932.1 High Energy Physics

Numerical data indexing:Area 5.70e-03m2, Decibel 2.50e+01dB, Decibel 4.80e+01dB, Electron_Volt 1.50e+03eV, Size 4.50e-03m, Size 6.00e+00m

DOI:10.7498/aps.65.010703

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20160301806145

Title:Optical properties and Judd-Ofelt analysis of a novel europium pentafluoropropionate complex with 2,2′-bipyridine

Authors:Li, Dong-Dong (1, 2); She, Jiang-Bo (2); Nie, Rong-Zhi (2); Peng, Bo (2)

Author affiliation:(1) School of Electronic Engineering, Xi'An University of Post and Telecommunications, Xi'an, 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, China

Corresponding author:She, Jiang-Bo(shejb@opt.ac.cn)

Source title:Optik

Abbreviated source title:Optik

Volume:127

Issue:4

Issue date:February 1, 2016

Publication year:2016

Pages:2059-2061

Language:English

ISSN:00304026

Document type:Journal article (JA)

Publisher:Elsevier GmbH

Abstract:Europium pentafluoropropionate 2,2′-bipyridine complex, Eu(C2F5COO)3·bpy (bpy = 2,2′-bipyridine), were synthesized and characterized by elemental analysis, Fourier transform infrared spectroscopy (FT-IR), photoluminescence (PL) spectroscopy and thermogravimetric analysis (TA).The excitation spectra of the complex demonstrate that the energy collected by "antenna ligands" was transferred to Eu3+ions efficiently. The room-temperature PL spectra of the complex is composed of the typical Eu3+ions red emission, due to transitions between5D0→7FJ(J=0→4). The lifetimes of5D0of Eu3+in the complex were examined using time-resolved spectroscopic analysis, and the lifetime values of Eu(C2F5COO)3·bpy were fitting with monoexponential (2585 μs) curve. The decomposition temperature of the complex was 262 °C, which indicates the host complex was quite stable to heat. According to the fluorescence emission spectra, the Judd-Ofelt parameters Ω2, Ω4of the complexes were calculated and the radiative properties were also presented. The5D0radiative lifetime, quantum yield and the stimulated emission cross-section of the complex is excellent, which prove that this complex will be promising material for laser application. © 2015 Elsevier GmbH.

Number of references:12

Main heading:Europium

Controlled terms:Curve fitting - Emission spectroscopy - Fourier transform infrared spectroscopy - Judd-Ofelt theory - Laser theory - Optical properties - Photoluminescence spectroscopy - Single crystals - Spectroscopic analysis - Thermogravimetric analysis

Uncontrolled terms:Bipyridines - Decomposition temperature - Fluorescence emission spectra - Fourier transform infra red (FTIR) spectroscopy - Judd-Ofelt parameters - Laser materials - Radiative properties - Stimulated emission cross section

Classification code:547.2 Rare Earth Metals - 741.1 Light/Optics - 741.3 Optical Devices and Systems - 744.1 Lasers, General - 801 Chemistry - 921.6 Numerical Methods - 931.3 Atomic and Molecular Physics - 933.1 Crystalline Solids

Numerical data indexing:Temperature 5.35e+02K, Time 2.59e-03s

DOI:10.1016/j.ijleo.2015.11.130

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20153801286085

Title:Effects of Laser Repetition Rate and Fluence on Micromachining of TiC Ceramic

Authors:Zhang, Ying (1); Wang, Yuqian (1); Zhang, Junzhan (1); Liu, Yongsheng (2); Yang, Xiaojun (3); Li, Weinan (3)

Author affiliation:(1) College of Materials and Mineral Resources, Xi'an University of Architecture and Technology, Xi'an, Shaanxi, China; (2) Science and Technology on Thermostructure Composite Materials Laboratory, Northwestern Polytechnical University, Xi'an, Shaanxi, 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, China

Corresponding author:Zhang, Ying(xayzhang@xauat.edu.cn)

Source title:Materials and Manufacturing Processes

Abbreviated source title:Mater Manuf Process

Volume:31

Issue:7

Issue date:May 18, 2016

Publication year:2016

Pages:832-837

Language:English

ISSN:10426914

E-ISSN:15322475

CODEN:MMAPET

Document type:Journal article (JA)

Publisher:Taylor and Francis Inc., 325 Chestnut St, Suite 800, Philadelphia, PA 19106, United States

Abstract:Micromachining of titanium carbide (TiC) ceramic is very difficult because of its high hardness and brittleness. Femtosecond pulsed laser was employed to process circular rings on the surface of TiC ceramic. The interaction area between femtosecond laser pulses and TiC at different laser repetition rates and fluences was studied. Morphology and composition of irradiated area were analyzed by scanning electron microscope, energy dispersive spectroscopy, and Raman spectrum. The results indicated that the radius of outer circle was close to the intended radius. Laser fluence had obvious effects on the radius and width of circular rings, compared to laser repetition rate. The width of circular rings increased rapidly with increasing laser fluence from 2.55 × 10-2to 1.27 × 10-1J/mm2, and then stabilized at around 40 μm when laser fluence was above 7.64 × 10-1J/mm2. The surface of circular rings was characterized by ripples at the lower laser fluence. With increasing laser fluence, four kinds of typical morphology were observed, including ripples, cauliflower-like particles, ball-like particles, and deposited oxide layer. Ball-like particles contained high concentration of titanium, which came from melt ball splashing from ablation area. The others came from the different oxidation stages occurred on the surface of TiC sample. © Copyright 2016 Taylor & Francis Group, LLC.

Number of references:22

Main heading:Pulsed lasers

Controlled terms:Ceramic materials - Chemical analysis - Composite micromechanics - Energy dispersive spectroscopy - Fracture mechanics - Laser pulses - Lasers - Micromachining - Morphology - Pulse repetition rate - Scanning electron microscopy - Titanium - Titanium carbide - Ultrafast lasers - Ultrashort pulses

Uncontrolled terms:Femtosecond pulsed laser - Femtoseconds - Fluences - Laser repetition rate - Morphology and composition - Repetition rate - TiC - Titanium carbides (TiC)

Numerical data indexing:Size 4.00e-05m

DOI:10.1080/10426914.2015.1037916

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20163102656276

Title:34-fs, all-fiber all-polarization-maintaining single-mode pulse nonlinear amplifier

Authors:Yu, Jia (1, 2, 3); Feng, Ye (1, 2, 4); Cai, Yajun (1, 2); Li, Xiaohui (5); Hu, Xiaohong (1, 2); Zhang, Wei (1); Duan, Lina (1, 2); Yang, Zhi (1); Wang, Yishan (1, 3); Liu, Yuanshan (1); Zhao, Wei (1, 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) University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing; 100049, China; (3) Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan; Shanxi; 030006, China; (4) Department of Physics, Xi'an Jiaotong University, Xi'an; 710049, China; (5) School of Physics and Information Technology, Shaanxi Normal University, Xi'an; 710062, China

Source title:Optics Express

Abbreviated source title:Opt. Express

Volume:24

Issue:15

Issue date:July 25, 2016

Publication year:2016

Pages:16630-16637

Language:English

E-ISSN:10944087

Document type:Journal article (JA)

Publisher:OSA - The Optical Society

Abstract:We present an all-fiber all-polarization-maintaining (PM) single mode (SM) fiber pulse nonlinear amplification system. The seed laser with a repetition rate of 200 MHz is amplified by two-section erbium-doped PM gain fibers with different peak-absorption rate. The amplified pulse duration can be compressed into 34-fs with 320-mW output power, which corresponds to 1.6-nJ pulse energy and approximate 23.5-kW peak power. In addition, the amplified and compressed pulse is further coupled into the high nonlinear fiber and an octave-spanning supercontinuum generation can be obtained. To the best of our knowledge, it is the highest peak power and the shortest pulse duration obtained in the field of all-fiber all-PM SM pulse-amplification systems. ©2016 Optical Society of America.

Number of references:22

Main heading:Erbium doped fiber amplifiers

Controlled terms:Amplification - Fiber amplifiers - Fibers - Nonlinear optics - Polarization - Polarization-maintaining fiber - Supercontinuum generation

Uncontrolled terms:Amplified pulse - Compressed pulse - High nonlinear fibers - Nonlinear amplification - Nonlinear amplifier - Peak absorption - Polarization maintaining - Pulse amplification

Classification code:741.1.1 Nonlinear Optics - 741.1.2 Fiber Optics - 744.4 Solid State Lasers

Numerical data indexing:Energy 1.60e-09J, Frequency 2.00e+08Hz, Power 2.35e+04W, Power 3.20e-01W, Time 3.40e-14s

DOI:10.1364/OE.24.016630

Funding Details: Number; Acronym; Sponsor: 11573058; CAS; Canadian Anesthesiologists' Society - Number; Acronym; Sponsor: 11573058; SAFEA; State Administration of Foreign Experts Affairs - Number; Acronym; Sponsor: 61275164; CAS; Canadian Anesthesiologists' Society - Number; Acronym; Sponsor: 61275164; SAFEA; State Administration of Foreign Experts Affairs - Number; Acronym; Sponsor: SKLST201401; CAS; Chinese Academy of Sciences

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20163002634471

Title:Packaging of hard solder 500W QCW diode laser array

Authors:Li, Xiaoning (1); Wang, Jingwei (1); Hou, Dong (1); Nie, Zhiqiang (2); Liu, Xingsheng (1, 2)

Author affiliation:(1) Focuslight Technologies Inc., 56 Zhangba 6th Road, Xi'an High-Tech Zone, Xi'an, Shaanxi; 710077, 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 New Industrial Park, Xi'an, Shaanxi; 710119, China

Corresponding author:Li, Xiaoning(lixn@focuslight.com.cn)

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

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:9730

Monograph title:Components and Packaging for Laser Systems II

Issue date:June 30, 2016

Publication year:2016

Article number:97300D

Language:English

ISSN:0277786X

E-ISSN:1996756X

CODEN:PSISDG

ISBN-13:9781628419658

Document type:Conference article (CA)

Conference name:Components and Packaging for Laser Systems II

Conference date:February 16, 2016 - February 18, 2016

Conference location:San Francisco, CA, United states

Conference code:122502

Publisher:SPIE

Abstract:The package structure critically influences the major characteristics of diode laser, such as thermal behavior, output power, wavelength and smile effect. In this work, a novel micro channel cooler (MCC) for stack array laser with good heat dissipation capability and high reliability is presented. Numerical simulations of thermal management with different MCC structure are conducted and analyzed. Based on this new MCC packaging structure, a series of QCW 500W high power laser arrays with hard solder packaging technology has been fabricated. The performances of the laser arrays are characterized. A narrow spectrum of 3.12 nm and an excellent smile value are obtained. The lifetime of the laser array is more than 1.38×109shots and still ongoing. © 2016 SPIE.

Number of references:12

Main heading:Packaging

Controlled terms:Diodes - High power lasers - Semiconductor lasers

Uncontrolled terms:Heat dissipation capability - High power - High reliability - Microchannel coolers - Package structure - Packaging structure - Packaging technologies - Thermal behaviors

Classification code:694.1 Packaging, General - 744.1 Lasers, General - 744.4.1 Semiconductor Lasers

Numerical data indexing:Power 5.00e+02W, Size 3.12e-09m

DOI:10.1117/12.2213977

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20163002634496

Title:High power diode laser array development using completely indium free packaging technology with narrow spectrum

Authors:Hou, Dong (1); Wang, Jingwei (1); Gao, Lijun (1); Liang, Xuejie (1); Li, Xiaoning (1); Liu, Xingsheng (1, 2)

Author affiliation:(1) Focuslight Technologies Inc., 56 Zhangba 6th Road, Xi'an, Shaanxi; 710077, 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, Shaanxi; 710119, China

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

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:9730

Monograph title:Components and Packaging for Laser Systems II

Issue date:June 30, 2016

Publication year:2016

Article number:973009

Language:English

ISSN:0277786X

E-ISSN:1996756X

CODEN:PSISDG

ISBN-13:9781628419658

Document type:Conference article (CA)

Conference name:Components and Packaging for Laser Systems II

Conference date:February 16, 2016 - February 18, 2016

Conference location:San Francisco, CA, United states

Conference code:122502

Publisher:SPIE

Abstract:The high power diode lasers have been widely used in many fields. In this work, a sophisticated high power and high performance horizontal array of diode laser stacks have been developed and fabricated with high duty cycle using hard solder bonding technology. CTE-matched submount and Gold Tin (AuSn) hard solder are used for bonding the diode laser bar to achieve the performances of anti-thermal fatigue, higher reliability and longer lifetime. This array consists of 30 bars with the expected optical output peak power of 6000W. By means of numerical simulation and analytical results, the diode laser bars are aligned on suitable positions along the water cooled cooler in order to achieve the uniform wavelength with narrow spectrum and accurate central wavelength. The performance of the horizontal array, such as output power, spectrum, thermal resistance, life time, etc., is characterized and analyzed. © 2016 SPIE.

Number of references:10

Main heading:Semiconductor lasers

Controlled terms:Diodes - Laser beam welding - Power semiconductor diodes

Uncontrolled terms:Analytical results - Central wavelength - Diode laser bar - Diode laser stack - High power diode laser - High-power diode laser arrays - Horizontal arrays - Packaging technologies

Classification code:744.4.1 Semiconductor Lasers - 744.9 Laser Applications

Numerical data indexing:Power 6.00e+03W

DOI:10.1117/12.2213928

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20162902598036

Title:Joint content replication and request routing for social video distribution over cloud CDN: A community clustering method

Authors:Hu, Han (1); Wen, Yonggang (1); Chua, Tat-Seng (2); Huang, Jian (3); Zhu, Wenwu (4); Li, Xuelong (5)

Author affiliation:(1) School of Computer Engineering, Nanyang Technological University, Singapore; 639798, Singapore; (2) School of Computing, National University of Singapore, Singapore; 117417, Singapore; (3) Sun Yat-sen University, Guangzhou; 510275, China; (4) Tsinghua University, Beijing; 100084, China; (5) Center for OPTical IMagery Analysis and Learning, State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China

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

Abbreviated source title:IEEE Trans Circuits Syst Video Technol

Volume:26

Issue:7

Issue date:July 2016

Publication year:2016

Pages:1320-1333

Article number:7155559

Language:English

ISSN:10518215

CODEN:ITCTEM

Document type:Journal article (JA)

Publisher:Institute of Electrical and Electronics Engineers Inc.

Abstract:The increasing popularity of online social networks (OSNs) has been transforming the dissemination pattern of social video contents. We can utilize the social information propagation pattern to improve the efficiency of social video distribution. In this paper, motivated by the social community classification, we present a social video replication and user request dispatching mechanism in the cloud content delivery network architecture to reduce the system operational cost, while guaranteeing the averaged service latency. Specifically, we first present a community classification method that clusters social users with social relationships, close geolocations, and similar video watching interests into various communities. Then, we conduct a large-scale measurement on a real OSN system to study the diversities of social video propagation and the effectiveness of our communities on smoothing the diversity. Finally, we propose the community-based video replication and request dispatching strategy and formulate it as a constrained optimization problem. Based on a stochastic optimization framework, we derive an online solution and rigorously prove the optimality. We evaluate our algorithm on a real trace under realistic settings and demonstrate that our algorithm can reduce the monetary cost by 30% against traditional approaches with the same service latency. © 2015 IEEE.

Number of references:49

Main heading:Optimization

Controlled terms:Cluster analysis - Constrained optimization - Cost reduction - Information dissemination - Network architecture - Online systems - Social aspects - Social networking (online)

Uncontrolled terms:Community detection - Constrained optimi-zation problems - Content delivery network - Large-scale measurement - Online social networks (OSNs) - Social videos - Stochastic optimizations - Traditional approaches

Classification code:722.4 Digital Computers and Systems - 723 Computer Software, Data Handling and Applications - 901.4 Impact of Technology on Society - 903.2 Information Dissemination - 921.5 Optimization Techniques - 961 Systems Science

Numerical data indexing:Percentage 3.00e+01%

DOI:10.1109/TCSVT.2015.2455712

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20162202445119

Title:Effect of the gradient constant temperature on the electrochemical capacitance of cotton stalk-based activated carbon

Authors:Li, Wenlong (1, 2); Wumaier, Tuerdi (3); Chen, Mingde (1); Zhang, Ji (3); Liu, Huan (1, 2); Yang, Li Qing (1); Wang, Haojing (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi’an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi’an; Shaanxi; 710119, China; (2) University of Chinese Academy of Sciences, Beijing; 100049, China; (3) Xinjiang Institute of Engineering, Urumqi; Xinjiang; 830023, China

Corresponding author:Li, Wenlong(liwenlong@opt.cn)

Source title:Journal of Solid State Electrochemistry

Abbreviated source title:J. Solid State Electrochem.

Volume:20

Issue:8

Issue date:August 1, 2016

Publication year:2016

Pages:2315-2321

Language:English

ISSN:14328488

Document type:Journal article (JA)

Publisher:Springer New York LLC

Abstract:The cost-effective activated carbon based from waste cotton stalks by the KOH activation method is investigated as the electrode material in supercapacitor for the first time. Activation temperature control is one of the most important factors affecting the surface area and pore structure of activated carbon, and it influences the capacitive performance of activated carbon based from cotton stalk. The optimized conditions are as follows: cotton stalk base charcoals and activating agent with a mass ration of 1:4, at an activation temperature of 600, 700, and 800°C for 1, 1, and 2 h, respectively. With these experimental conditions, the activated carbon presents excellent electrochemical characteristics. The specific capacitance of the prepared activated carbon was as high as 180 F g−1at 2 A g−1in 1.0 mol·L−1Et4NBF4/AN electrolyte and the specific capacitance without obvious attenuation after 2000 cycles. So, it is reasonable to believe that the activated carbons from cotton stalks by the KOH gradient constant temperature activation method might be one of the innovative carbon electrode materials for supercapacitor. © 2016, Springer-Verlag Berlin Heidelberg.

Number of references:42

Main heading:Electrochemical electrodes

Controlled terms:Activated carbon - Capacitance - Capacitors - Charcoal - Chemical activation - Cost effectiveness - Cotton - Electrochemical properties - Electrodes - Electrolytes - Electrolytic capacitors - Reactor cores

Uncontrolled terms:Activation temperatures - Capacitive performance - Carbon electrode - Cotton stalk - Electrochemical capacitance - Electrochemical characteristics - Experimental conditions - KOH activation

Numerical data indexing:Temperature 1.07e+03K, Time 7.20e+03s

DOI:10.1007/s10008-016-3235-2

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20162102427137

Title:Research on temperature tuning properties of chirped fiber grating

Authors:Zhang, Xin (1); Yang, Zhi (1); Li, Qianglong (1); Li, Feng (1); Yang, Xiaojun (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; Shaanxi; 710119, China

Corresponding author:Yang, Zhi(yangzhi@opt.ac.cn)

Source title:Guangxue Xuebao/Acta Optica Sinica

Abbreviated source title:Guangxue Xuebao

Volume:36

Issue:5

Issue date:May 10, 2016

Publication year:2016

Article number:0505002

Language:Chinese

ISSN:02532239

CODEN:GUXUDC

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:According to the temperature tenability of chirped fiber grating, the minimum output pulse width can be obtained by controlling the fiber grating's temperature to change the dispersion of the chirped fiber grating, and the feasibility of this idea is demonstrated through experiments. The chirped fiber grating is used as the stretcher in the fiber chirped pulse amplification (CPA) system, and the gratings-pair is used as compressor. The positive dispersion brought by the stretcher is compensated by the negative dispersion provided by the compressor. The output pulse width is measured by the auto-correlation for denoting the dispersion of the chirped fiber Bragg grating indirectly as a function of temperature. It can be seen from the obtained experimental data that, when the temperature rises from -7℃ to 50℃, the pulse width falls from 1057 fs to 764 fs, and then rises to 910 fs, with a total change of 439 fs achieved. In the experiment, dispersion increases with temperature rising, changing from insufficient dispersion compensation to over dispersion compensation. © 2016, Chinese Lasers Press. All right reserved.

Number of references:11

Page count:5

Main heading:Ultrashort pulses

Controlled terms:Chirp modulation - Diffraction gratings - Dispersion (waves) - Dispersion compensation - Fiber Bragg gratings - Fibers - Stretchers

Uncontrolled terms:Chirped fiber Bragg grating - Chirped fiber grating - Chirped pulse amplification systems - Fiber gratings - Over dispersion - Temperature rise - Temperature rising - Temperature tuning

Classification code:462.1 Biomedical Equipment, General - 716 Telecommunication; Radar, Radio and Television - 741.3 Optical Devices and Systems

Numerical data indexing:Time 1.06e-12s to 7.64e-13s, Time 4.39e-13s, Time 9.10e-13s

DOI:10.3788/AOS201636.0505002

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20161902355993

Title:Optimization design of C-T imaging spectrometer based on the tilt field len

Authors:Hao, Ai-Hua (1); Hu, Bing-Liang (2); Li, Li-Bo (2); Li, Yun (2)

Author affiliation:(1) School of Electronic Engineering, Xi'an University of Post and Telecommunications, Xi'an; 710121, China; (2) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:45

Issue:4

Issue date:April 1, 2016

Publication year:2016

Article number:0412002

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:Residual smile limits the application of Czerny-Turner plane grating spectrometer in the imaging spectrometer. In this paper, different from the traditional method of smile correction based on prism, a method is proposed, which is based on the tilt field mirror. The field curve is corrected, at the same time, the different wavelength slit images in different regions of the field lens are corrected, and the other optical properties of the system are not changed. The Czerny Turner imaging spectrometer slit is 7.8 millimeter length and 0.016 millimeter wide, spectral range from 0.31 to 0.5 microns, spectral resolution 0.4 nanometers, the object focal length 70 millimeters, 1:1 magnification. Optimization design results, MTF over 0.8, RMS spot radius less than 9 microns, the relative smile less than 0.2%, meet the design requirements. It shows that the method can be used in the systems with weak signal and low transmittance optical glass. © 2016, Chinese Optical Society. All right reserved.

Number of references:14

Page count:5

Main heading:Spectrometers

Controlled terms:Design - Lenses - Optical design - Optical glass - Optical properties - Silica

Uncontrolled terms:Czerny-Turner - Field lens - Grating imaging - Imaging spectrometers - Optimization design - Plane grating - Smile - Spectral range

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

Numerical data indexing:Size 1.60e-05m, Size 4.00e-10m, Size 7.00e-02m, Size 7.80e-03m

DOI:10.3788/gzxb20164504.0412002

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20160902042183

Title:Optical waveguides fabricated by nitrogen ion implantation in fused silica

Authors:Liu, Chun-Xiao (1); Fu, Li-Li (2); Zheng, Rui-Lin (1); Guo, Hai-Tao (3); Zhou, Zhi-Guang (3); Li, Wei-Nan (3); Lin, She-Bao (4); Wei, Wei (1)

Author affiliation:(1) Nanjing University of Posts and Telecommunications, School of Optoelectronic Engineering, No. 9 Wenyuan Road, Yadong New District, Nanjing, Jiangsu, China; (2) Nanjing University of Posts and Telecommunications, College of Electronic Science and Engineering, No. 9 Wenyuan Road, Yadong New District, Nanjing, Jiangsu, China; (3) Xi'an Institute of Optics and Precision Mechanics, State Key Laboratory of Transient Optics and Photonics, Chinese Academy of Sciences, No. 17 Xinxi Road, Xi'an, Shaanxi, China; (4) Baoji University of Arts and Sciences, Institute of Physics and Optoelectronics Technology, No. 44 Baoguang Road, Baoji, Shaanxi, China

Corresponding author:Liu, Chun-Xiao(cxliuopt@163.com)

Source title:Optical Engineering

Abbreviated source title:Opt Eng

Volume:55

Issue:2

Issue date:February 1, 2016

Publication year:2016

Article number:027105

Language:English

ISSN:00913286

E-ISSN:15602303

CODEN:OPEGAR

Document type:Journal article (JA)

Publisher:SPIE

Abstract:We report on the fabrication of waveguides in fused silica using 4.5-MeV nitrogen ion implantation with a fluence of 5.0×1014 ions/cm2. The prism-coupling method was employed to measure the effective refractive indices of guiding modes at the wavelengths of 632.8 and 1539 nm. The effective refractive indices of the first few modes were higher than that of the substrate. The refractive index profiles at 632.8 and 1539 nm were reconstructed by the reflectivity calculation method. Positive index changes were induced in the waveguide layers. The end-face coupling method was used to measure the near-field light intensity distributions at the wavelength of 632.8 nm and the finite-difference beam propagation method was applied to simulate the guided mode profile at the wavelength of 1539 nm. The waveguide structures emerge as candidates for integrated photonic devices. © 2016 Society of Photo-Optical Instrumentation Engineers (SPIE).

Number of references:34

Main heading:Fused silica

Controlled terms:Beam propagation method - Ion implantation - Ions - Nitrogen - Optical waveguides - Photonic devices - Refractive index - Silica - Waveguides

Uncontrolled terms:Effective refractive index - Finite difference beam propagation method - Integrated photonic devices - Nitrogen ion implantations - Prism coupling method - Refractive index profiles - Waveguide layers - Waveguide structure

Classification code:711 Electromagnetic Waves - 714.3 Waveguides - 741 Light, Optics and Optical Devices - 741.1 Light/Optics - 804 Chemical Products Generally - 812.3 Glass - 921 Mathematics

Numerical data indexing:Electron_Volt 4.50e+06eV, Size 1.54e-06m, Size 6.33e-07m

DOI:10.1117/1.OE.55.2.027105

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20162202429172

Title:All-optical control of microfiber resonator by graphene's photothermal effect

Authors:Wang, Yadong (1); Gan, Xuetao (1); Zhao, Chenyang (1); Fang, Liang (1); Mao, Dong (1); Xu, Yiping (2); Zhang, Fanlu (1); Xi, Teli (1); Ren, Liyong (2); Zhao, Jianlin (1)

Author affiliation:(1) Key Laboratory of Space Applied Physics and Chemistry, Ministry of Education, Shaanxi Key Laboratory of Optical Information Technology, School of Science, Northwestern Polytechnical University, Xi'an; 710072, 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:Zhao, Jianlin(jlzhao@nwpu.edu.cn)

Source title:Applied Physics Letters

Abbreviated source title:Appl Phys Lett

Volume:108

Issue:17

Issue date:April 25, 2016

Publication year:2016

Article number:171905

Language:English

ISSN:00036951

CODEN:APPLAB

Document type:Journal article (JA)

Publisher:American Institute of Physics Inc.

Abstract:We demonstrate an efficient all-optical control of microfiber resonator assisted by graphene's photothermal effect. Wrapping graphene onto a microfiber resonator, the light-graphene interaction can be strongly enhanced via the resonantly circulating light, which enables a significant modulation of the resonance with a resonant wavelength shift rate of 71 pm/mW when pumped by a 1540 nm laser. The optically controlled resonator enables the implementation of low threshold optical bistability and switching with an extinction ratio exceeding 13 dB. The thin and compact structure promises a fast response speed of the control, with a rise (fall) time of 294.7 μs (212.2 μs) following the 10%-90% rule. The proposed device, with the advantages of compact structure, all-optical control, and low power acquirement, offers great potential in the miniaturization of active in-fiber photonic devices. © 2016 Author(s).

Number of references:28

Main heading:Resonators

Controlled terms:Graphene - Photonic devices - Pumping (laser)

Uncontrolled terms:All optical - Compact structures - Extinction ratios - Fast response - Low thresholds - Optically controlled - Photothermal effects - Resonant wavelengths

Classification code:741.1 Light/Optics - 744.1 Lasers, General - 761 Nanotechnology - 804 Chemical Products Generally

Numerical data indexing:Size 1.54e-06m, Time 2.12e-04s

DOI:10.1063/1.4947577

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20162302474214

Title:Investigations on the photoluminescence of the iron and cobalt doped fluoride-containing phosphate-based glasses and its defects-related nature

Authors:He, Quanlong (1, 2); Wang, Pengfei (1); Lu, Min (1); Peng, Bo (1)

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

Corresponding author:Wang, Pengfei(pfwang@opt.ac.cn)

Source title:Journal of Alloys and Compounds

Abbreviated source title:J Alloys Compd

Volume:685

Issue date:November 15, 2016

Publication year:2016

Pages:153-158

Language:English

ISSN:09258388

CODEN:JALCEU

Document type:Journal article (JA)

Publisher:Elsevier Ltd

Abstract:The influence of doping iron and cobalt ions on the formation of defects in the fluoride-containing phosphate-based glasses was studied comprehensively by means of analyzing the absorption and photoluminescence (PL) spectra as well as the electron spin resonance (ESR) spectra. The absorption and ESR spectra show that the defects, including phosphate-related oxygen hole center (POHC), oxygen-related hole centers (OHC), Fe3+, Co2+, PO3-EC, PO4-EC and fluorine-related non-paramagnetic color (FD) centers were formed during the glass preparation process. In addition, the analysis on the PL and absorption as well as excitation (PLE) spectra indicate that PO4-EC and OHC defects which have large absorption in the UV region result in the emission band peaking at 780 nm under the excitation at 351 nm for the cobalt doped (2ω absorptive) glass. Addition of small quantities of iron causes the effectively intense absorption towards the 1ω wavelength (1053 nm) due to the presence of Fe2+, but also a distinctively observed red-shift of the UV absorption edge was dominated by the charge-transfer transition of the existence of Fe3+. The experimental results demonstrate that Fe3+suppress the formation of FD defects in the glasses, while promotes the formation of POHC defects. Besides, introduction of Co2+inhibits the formation of POHC and PO4-EC defects, and Fe2+promotes forming of POHC defects. © 2016 Elsevier B.V. All rights reserved.

Number of references:26

Main heading:Electron spin resonance spectroscopy

Controlled terms:Absorption spectra - Carbon dioxide - Charge transfer - Cobalt - Defects - Doppler effect - Finite difference method - Fluorine compounds - Glass - Iron - Magnetic moments - Photoluminescence - Reduction

Uncontrolled terms:Absorption and photoluminescence - Charge transfer transitions - Emission bands - Glass preparation - Oxygen hole centers - Phosphate based glass - Photoluminescence spectrum - Red shift

Classification code:545.1 Iron - 549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals - 701.2 Magnetism: Basic Concepts and Phenomena - 711.2 Electromagnetic Waves in Relation to Various Structures - 741.1 Light/Optics - 801 Chemistry - 802.2 Chemical Reactions - 804.2 Inorganic Compounds - 812.3 Glass - 921.6 Numerical Methods - 951 Materials Science

Numerical data indexing:Size 1.05e-06m, Size 3.51e-07m, Size 7.80e-07m

DOI:10.1016/j.jallcom.2016.05.253

Funding Details: Number; Acronym; Sponsor: 61307046; NSFC; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20160902037325

Title:New light-control technology research of CCD camera

Authors:Wang, Xiaotao (1, 2); Wang, Xu'an (1, 2, 3, 4); Kang, Ning (3, 4)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics of CAS, Xi'an, China; (2) University of Chinese Academy of Sciences, Beijing, China; (3) Xi'an Modern Technology Institute of Control, Xi'an, China; (4) Xi'an Guide Technology Co., Ltd, Xi'an, China

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

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

Volume:45

Issue:1

Issue date:January 25, 2016

Publication year:2016

Article number:0120003

Language:Chinese

ISSN:10072276

Document type:Journal article (JA)

Publisher:Chinese Society of Astronautics

Abstract:The exposure time and signal gain can be used to adjust the light intensity for a conventional CCD camera, but both of them can not be configured best. It is also very difficult to maximize the effectiveness of their dimming, especially for the condition of the changed illumination intensity, the large dynamic range and the unclear picture. For the above-mentioned shortages, the histogram equalization certain improvements, the deployment of exposure time and signal gain were optimized through precise deployment of exposure time and optimization of signal gain coefficients. After the test, the screen effect has been significantly improved, the adjustment time is less than 40 ms, and the system is stable and reliable. © 2016, Editorial Board of Journal of Infrared and Laser Engineering. All right reserved.

Number of references:8

Page count:6

Main heading:CCD cameras

Controlled terms:Graphic methods

Uncontrolled terms:Adjustment time - Automatic exposure - Gray scale - Histogram - Histogram equalizations - Illumination intensity - Signal gain - Signal gain coefficients

Classification code:714.2 Semiconductor Devices and Integrated Circuits

Numerical data indexing:Time 4.00e-02s

DOI:10.3788/IRLA201645.0120003

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20163802815463

Title:Deep object tracking with multi-modal data

Authors:Zhang, Xuezhi (1, 2); Yuan, Yuan (1); Lu, Xiaoqiang (1)

Author affiliation:(1) Center for OPTical IMagery Analysis and Learning (OPTIMAL), Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, Shaanxi; 710119, China; (2) University of the Chinese Academy of Sciences, 19A Yuquanlu, Beijing; 100049, China

Corresponding author:Zhang, Xuezhi

Source title:IEEE CITS 2016 - 2016 International Conference on Computer, Information and Telecommunication Systems

Abbreviated source title:IEEE CITS - Int. Conf. Comput., Inf. Telecommun. Syst.

Monograph title:IEEE CITS 2016 - 2016 International Conference on Computer, Information and Telecommunication Systems

Issue date:August 16, 2016

Publication year:2016

Article number:7546403

Language:English

ISBN-13:9781509034406

Document type:Conference article (CA)

Conference name:2016 International Conference on Computer, Information and Telecommunication Systems, CITS 2016

Conference date:July 6, 2016 - July 8, 2016

Conference location:Kunming, China

Conference code:123384

Sponsor:State Key Laboratory of Integrated Services Networks (ISN); Xidian University; Yunnan Minzu University

Publisher:Institute of Electrical and Electronics Engineers Inc.

Abstract:Object tracking is a challenging topic in the field of computer vision since its performance is easily disturbed by occlusion, illumination change, background clutter, scale variation, etc. In this paper, we introduce a robust tracking algorithm that fuses information from both visible images and infrared (IR) images. The proposed tracking algorithm not only incorporates convolutional feature maps from the visible channel, but also employs a scale pyramid representation from IR channel. We estimate the target location by fusing multilayer convolutional feature maps, and predict the target scale from a scale pyramid. The pipeline of the proposed method is as follows. First, the hierarchical convolutional feature maps are obtained from visible images using VGG-Nets. Then, the accurate target location is predicted by the maximum response of correlation filters with the visible image feature maps. Finally, we obtain the precise object scale with a scale pyramid from infrared images where the difference between the target and the background is clear. In order to verify the performance of the proposed method, we capture six video sequences under different conditions. These sequences contain both visible channel and IR channel. Ten state-of-the-art tracking algorithms are compared with our method, and the experimental results show the effectiveness of the proposed tracker. © 2016 IEEE.

Number of references:22

Main heading:Tracking (position)

Controlled terms:Computer vision - Convolution - Image processing - Infrared imaging - Modal analysis

Uncontrolled terms:Background clutter - Correlation filters - Illumination changes - Multi-modal data - Robust tracking - State of the art - Tracking algorithm - Visible channels

Classification code:716.1 Information Theory and Signal Processing - 723.5 Computer Applications - 746 Imaging Techniques - 921 Mathematics

DOI:10.1109/CITS.2016.7546403

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20163502747264

Title:Optimization design about gimbal structure of high-precision autonomous celestial navigation tracking mirror system

Authors:Huang, Wei (1); Yang, Xiao-Xu (1); Han, Jun-Feng (1); Wei, Yu (1); Zhang, Jing (1); Xie, Mei-Lin (1); Yue, Peng (2)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, CAS, Xi'an; 710119, China; (2) China Huay in Ordnance Test Center, Huayin Shaanxi; 714200, China

Corresponding author:Huang, Wei(huangshang2001@163.com)

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

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:9796

Monograph title:Selected Papers of the Photoelectronic Technology Committee Conferences held November 2015

Issue date:2016

Publication year:2016

Article number:97961S

Language:English

ISSN:0277786X

E-ISSN:1996756X

CODEN:PSISDG

ISBN-13:9781628418811

Document type:Conference article (CA)

Conference name:International Symposia on Atmosphere Optics and Adaptive Optics, Testing and Driving of Laser Fusion Energy Technology, High-performance Special Optical Film Technology, Novel Navigation Technology, Monitoring, Early Warning, Removal Technology of Space Targets and Debris, and UAV Payload Technology

Conference date:November 15, 2015 - November 28, 2015

Conference location:Chengdu and Suzhou, China

Conference code:121285

Sponsor:Chinese Academy of Engineering; Chinese Society for Optical Engineering; National Natural Science Foundation of China

Publisher:SPIE

Abstract:High precision tracking platform of celestial navigation with control mirror servo structure form, to solve the disadvantages of big volume and rotational inertia, slow response speed, and so on. It improved the stability and tracking accuracy of platform. Due to optical sensor and mirror are installed on the middle-gimbal, stiffness and resonant frequency requirement for high. Based on the application of finite element modality analysis theory, doing Research on dynamic characteristics of the middle-gimbal, and ANSYS was used for the finite element dynamic emulator analysis. According to the result of the computer to find out the weak links of the structure, and Put forward improvement suggestions and reanalysis. The lowest resonant frequency of optimization middle-gimbal avoid the bandwidth of the platform servo mechanism, and much higher than the disturbance frequency of carrier aircraft, and reduces mechanical resonance of the framework. Reaching provides a theoretical basis for the whole machine structure optimization design of high-precision of autonomous Celestial navigation tracking mirror system. © 2016 SPIE.

Number of references:5

Main heading:Structural optimization

Controlled terms:Adaptive optics - Dynamics - Finite element method - Mirrors - Natural frequencies - Navigation - Shape optimization - Space debris

Uncontrolled terms:Application of finite elements - Celestial navigation - Disturbance frequency - High precision tracking - Mechanical resonance - Optimization design - Rotational inertia - Stability and tracking

Classification code:656.1 Space Flight - 741.1 Light/Optics - 741.3 Optical Devices and Systems - 921.5 Optimization Techniques - 921.6 Numerical Methods

DOI:10.1117/12.2229022

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20163302707696

Title:Surveillance video synopsis via scaling down objects

Authors:Li, Xuelong (1); Wang, Zhigang (2); Lu, Xiaoqiang (1)

Author affiliation:(1) Center for OPTical IMagery Analysis and Learning (OPTIMAL), State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Xi'an, Shaanxi; 710119, China; (2) School of Computer Science and Center for OPTical IMagery Analysis and Learning (OPTIMAL), Northwestern Polytechnical University, Xi'an, Shaanxi; 710072, China

Source title:IEEE Transactions on Image Processing

Abbreviated source title:IEEE Trans Image Process

Volume:25

Issue:2

Issue date:February 1, 2016

Publication year:2016

Pages:740-755

Article number:7353185

Language:English

ISSN:10577149

CODEN:IIPRE4

Document type:Journal article (JA)

Publisher:Institute of Electrical and Electronics Engineers Inc.

Abstract:Video synopsis is an effective technique to provide a compact representation of the original video by removing spatiotemporal redundancies and by preserving the essential activities. Most current approaches for video synopsis will cause collisions among objects, especially when the video is condensed much. In this paper, we present an approach for video synopsis to reduce the collisions. Our approach first shifts active objects along the time axis to compact the original video. Then, the sizes of the objects are reduced when collisions occur. Meanwhile, the geometric centroids of the objects will be kept unchanged to preserve the location information. Our contributions are threefold. First, an approach is proposed to decrease collisions in the synopsis video through reducing the sizes of the objects. Second, an optimization framework is developed to indicate the optimal time position and the appropriate reduction coefficient for each object. Finally, some metrics are proposed, and several experiments are carried out to evaluate the proposed approach. The experiments have demonstrated that the synopsis video produced by our approach has much fewer collisions while the compression ratio is high. © 2015 IEEE.

Number of references:53

Main heading:Security systems

Controlled terms:Compression ratio (machinery) - Optimization - Space surveillance

Uncontrolled terms:Compact representation - Location information - Optimization framework - reduce collision - reduce size - Reduction coefficient - Surveillance video - Video synopsis

Classification code:656.2 Space Research - 914.1 Accidents and Accident Prevention - 921.5 Optimization Techniques

DOI:10.1109/TIP.2015.2507942

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20163602778835

Title:Adaptive 3D shape context representation for motion trajectory classification

Authors:Liu, Weihua (1); Li, Zuhe (2); Zhang, Geng (1); Zhang, Zhong (3)

Author affiliation:(1) Key Laboratory of Spectral Imaging Technology, Xi’an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi’an, China; (2) School of Computer and Communication Engineering, Zhengzhou University of Light Industry, Zhengzhou, China; (3) The University of Texas at Arlington, Texas, United States

Corresponding author:Liu, Weihua(lwh86117@163.com)

Source title:Multimedia Tools and Applications

Abbreviated source title:Multimedia Tools Appl

Issue date:August 31, 2016

Publication year:2016

Pages:1-22

Language:English

ISSN:13807501

E-ISSN:15737721

CODEN:MTAPFB

Document type:Article in Press

Publisher:Springer New York LLC

Abstract:The measurement of similarity between two motion trajectories is one of the fundamental task for motion analysis, perception and recognition. Previous research focus on 2D trajectory similarity measurement. With the advent of 3D sensors, it is possible to collect large amounts of 3D trajectory data for more precise motion representation. As trajectories in 3D space may often exhibit a similar motion pattern but may differ in location, orientation, scale, and appearance variations, the trajectory descriptor must be invariant to these degrees of freedom. Shape context is one of the rich local shape descriptors can be used to represent the trajectory in 2D space, however, rarely applied in the 3D motion trajectory recognition field. To handle 3D data, in this paper, we first naturally extend the shape context into the spatiotemporal domain by adopting a spherical neighborhood, and named it 3D Shape Context(3DSC). To achieve better global invariant on trajectories classification, the adaptive outer radius of 3DSC for extracting 3D Shape Context feature is proposed. The advantages of our proposed 3D shape context are: (1) It is invariant to motion trajectories translation and scale in the spatiotemporal domain; (2) It contains the whole trajectory points in the 3DSC ball volume, thus can achieve global information representation and is good for solving sub-trajectories problem; (3) It is insensitive to the appearance variations in the identical meaning trajectories, meanwhile, can greatly discriminate the distinct meaning trajectories. In trajectory recognition phase, we consider a feature-to-feature alignment between motion trajectories based on dynamic time warping and then use the one nearest neighbor (1NN) classifier for final accuracy evaluation. We test the performance of proposed 3D SC-DTW on UCI ASL large dataset, Digital hand dataset and the experimental results demonstrate the effectiveness of our method. © 2016 Springer Science+Business Media New York

Main heading:Trajectories

Controlled terms:Degrees of freedom (mechanics) - Statistical tests

Uncontrolled terms:Dynamic time warping - Gesture classifications - Gesture trajectories - Motion representation - Perception and recognition - Shape contexts - Spatio-temporal domains - Trajectory similarities

Classification code:922.2 Mathematical Statistics - 931.1 Mechanics

DOI:10.1007/s11042-016-3841-0

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20152801019554

Title:Video parsing via spatiotemporally analysis with images

Authors:Li, Xuelong (1); Mou, Lichao (1); Lu, Xiaoqiang (1)

Author affiliation:(1) Center for OPTical IMagery Analysis and Learning (OPTIMAL), State Key Laboratory of Transient Optics and Photonics, Xi’an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi’an; Shaanxi; 710119, China

Corresponding author:Lu, Xiaoqiang(luxq666666@gmail.com)

Source title:Multimedia Tools and Applications

Abbreviated source title:Multimedia Tools Appl

Volume:75

Issue:19

Issue date:October 1, 2016

Publication year:2016

Pages:11961-11976

Language:English

ISSN:13807501

E-ISSN:15737721

CODEN:MTAPFB

Document type:Journal article (JA)

Publisher:Springer New York LLC

Abstract:Effective parsing of video through the spatial and temporal domains is vital to many computer vision problems because it is helpful to automatically label objects in video instead of manual fashion, which is tedious. Some literatures propose to parse the semantic information on individual 2D images or individual video frames, however, these approaches only take use of the spatial information, ignore the temporal continuity information and fail to consider the relevance of frames. On the other hand, some approaches which only consider the spatial information attempt to propagate labels in the temporal domain for parsing the semantic information of the whole video, yet the non-injective and non-surjective natures can cause the black hole effect. In this paper, inspirited by some annotated image datasets (e.g., Stanford Background Dataset, LabelMe, and SIFT-FLOW), we propose to transfer or propagate such labels from images to videos. The proposed approach consists of three main stages: I) the posterior category probability density function (PDF) is learned by an algorithm which combines frame relevance and label propagation from images. II) the prior contextual constraint PDF on the map of pixel categories through whole video is learned by the Markov Random Fields (MRF). III) finally, based on both learned PDFs, the final parsing results are yielded up to the maximum a posterior (MAP) process which is computed via a very efficient graph-cut based integer optimization algorithm. The experiments show that the black hole effect can be effectively handled by the proposed approach. © 2015, Springer Science+Business Media New York.

Number of references:38

Main heading:Probability density function

Controlled terms:Algorithms - Computer vision - Formal languages - Graphic methods - Gravitation - Integer programming - Markov processes - Optimization - Semantics - Stars - Structural frames

Uncontrolled terms:Contextual constraints - Markov Random Felds (MRF) - Maximum a posteriors - Transfer learning - Video parsing

DOI:10.1007/s11042-015-2735-x

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20163402737309

Title:Far-field focal spot measurement of 10kJ-level laser facility

Authors:Wang, Zheng-Zhou (1, 3, 4); Xia, Yan-Wen (2); Li, Hong-Guang (4); Hu, Bing-Liang (4); Yin, Qin-Ye (1); Zheng, Kui-Xing (2)

Author affiliation:(1) School of Electronic & Information Engineering, Xi'an Jiaotong University, Xi'an; 710049, China; (2) Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang; Sichuan; 621900, China; (3) University of Chinese Academy of Sciences, Beijing; 100039, China; (4) Xi'an Institute of Optics and Precision Mechanics of Chinese Academy of Science, Xi'an; 710119, China

Corresponding author:Xia, Yan-Wen(xiayanwen1972@163.com)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:45

Issue:8

Issue date:August 1, 2016

Publication year:2016

Article number:0812001

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:In order to evaluate the far-field beam quality of 10 kJ-level laser facility with different off-axis wedged focus lens, by utilizing the methods of the sampling of weak light beams and amplification imaging of splitting beams, the focal spot data of 3ω laser was collected by two 16-bit scientific-grade CCD cameras in the paths of main lobe and side lobe under the conditions of that the lateral magnification coefficient is the same but the intensity attenuation coefficient is different. One CCD obtained main lobe of far-field image, the other acquired its side lobe. The far-field focal spot was reconstructed based on the mathematical model of schlieren method, and the dynamic range is 1 151.7∶1. The influence of CCD dynamic range, relative magnification ratio and system noise on reconstructed image was analyzed. Experimental results show that, the method can achieve a high dynamic range far-field accurate measurement of focal spot, the stitching error is less than one pixel, which meets the requirements of targeting experiments in experimental precision. © 2016, Science Press. All right reserved.

Number of references:14

Page count:6

Main heading:CCD cameras

Controlled terms:High power lasers - Optical beam splitters - Optical data processing

Uncontrolled terms:Attenuation coefficient - Dynamic range - Experimental precision - Far field - Far-field focal spots - Focal spot - Lateral magnification - Optical measurement

Classification code:714.2 Semiconductor Devices and Integrated Circuits - 723.2 Data Processing and Image Processing - 741.3 Optical Devices and Systems - 744.1 Lasers, General

DOI:10.3788/gzxb20164508.0812001

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20162402490328

Title:Intra-hour cloud movement detection for solar forecasts based on ground imaging system

Authors:Jiang, Baotan (1, 2, 3); Pan, Zhibin (1); Qiu, Yuehong (2); Chen, Zhi (2); Yao, Dalei (2); Bu, Fan (2)

Author affiliation:(1) Xi' An Jiaotong University, Xi'an; 710049, China; (2) Xi'An Institute of Optics and Precision Mechanics of CAS, Xi'an; 710119, China; (3) University of Chinese Academy of Sciences, Beijing; 10039, China

Corresponding author:Jiang, Baotan(jbt21@163.com)

Source title:Optik

Abbreviated source title:Optik

Volume:127

Issue:19

Issue date:October 1, 2016

Publication year:2016

Pages:7803-7808

Language:English

ISSN:00304026

Document type:Journal article (JA)

Publisher:Elsevier GmbH

Abstract:The penetration of solar energy continues to rise and becomes a central piece of the global energy mix. Thus, considering ways for more efficiently operated power systems to accommodate significant amounts of such a variable resource will be increasingly important. Improvements in solar forecasting methods and techniques will clearly be relevant. In addition to season and irradiation angle, the most important factor of influencing solar energy output is the effect of cloud movement on solar irradiation shadow on solar plate. This paper briefly analyzes the advantages and disadvantages of various moving target algorithms, and compares the typical feature matching algorithm (block motion estimation algorithm) and optical flow algorithm (CLG algorithm) against the collected cloud movement image sequence. The result shows that optical flow algorithm (CLG algorithm) is applied to cloud movement image. The calculation is very fast, with an accuracy above 96%. A comparison with CLG algorithm shows that direction and speed accuracy of block motion estimation algorithm based on hexagonal search pattern is 0.79 and 0.47, respectively. © 2016 Elsevier GmbH.

Number of references:21

Main heading:Motion estimation

Controlled terms:Algorithms - Forecasting - Image matching - Irradiation - Optical flows - Solar energy - Solar power generation

Uncontrolled terms:Block motion estimation - Cloud movements - Feature matching algorithms - Hexagon - Optical flow algorithm - Search patterns - Solar forecasting - Solar irradiation

Classification code:615.2 Solar Power - 657.1 Solar Energy and Phenomena - 741.1 Light/Optics

DOI:10.1016/j.ijleo.2016.05.126

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20162502507691

Title:High accuracy three-dimensional attitude angle measuring device

Authors:Sun, Guo-Yan (1, 2); Gao, Li-Min (1); Bai, Jian-Ming (1); Yang, Dong-Lai (1); Pan, Liang (1)

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

Corresponding author:Sun, Guo-Yan(sunguoyan@opt.ac.cn)

Source title:Guangxue Jingmi Gongcheng/Optics and Precision Engineering

Abbreviated source title:Guangxue Jingmi Gongcheng

Volume:24

Issue:5

Issue date:May 1, 2016

Publication year:2016

Pages:963-970

Language:Chinese

ISSN:1004924X

CODEN:GJGOF4

Document type:Journal article (JA)

Publisher:Chinese Academy of Sciences

Abstract:A high accuracy measuring device and corresponding measuring method for three-dimensional attitude angles (yaw, pitch and roll) were designed based on an autocollimator and a coordinate rotary transfer matrix. The working principle and structural composition were introduced. A three-dimensional attitude angle measuring model was established and the theory algorithm by coordinate rotation matrix was derived based on the principle of autocollimation angle measurement. Then, the optical system was designed according to the demand of the measurement system. A single Field Programming Gate Array (FPGA) was used to implement double CMOS image sensor imaging, spot identifying, subdivision positioning, three-dimensional attitude angle calculation and rapid communication with a USB. To ensure the unity of the actual equipment parameter and design data, a high precision calibration method was researched for the three-dimensional attitude angle measuring device. Finally, three-dimensional attitude angles were tested to verify this measuring device, and the degrees and the factors affecting the angle measuring accuracy were analyzed as well. Calibration and experiment measurement results indicate that the measuring precisions of the yaw, pitch and roll angles for the measuring device are 2.2″, 2.5″ and 7.8″ respectively in view field of ±20'. It shows that the three-dimensional attitude angle measuring device has higher precision, simpler structure as well as stronger stabilization, and can be widely applied to engineering practices. © 2016, Science Press. All right reserved.

Number of references:14

Main heading:Three dimensional computer graphics

Controlled terms:Angle measurement - Calibration - CMOS integrated circuits - Field programmable gate arrays (FPGA) - Optical systems - Precision engineering - Transfer matrix method

Uncontrolled terms:Angle measuring - Autocollimators - Pitch angle - Roll angle - Yaw angles

Classification code:714.2 Semiconductor Devices and Integrated Circuits - 721.2 Logic Elements - 723.2 Data Processing and Image Processing - 741.3 Optical Devices and Systems - 921 Mathematics - 943.2 Mechanical Variables Measurements

DOI:10.3788/OPE.20162405.0963

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20162702552627

Title:Polyfurfuryl alcohol spheres template synthesis of 3D porous graphene for high-performance supercapacitor application

Authors:Ma, Cunliang (1); Peng, Li (2); Feng, Yafei (1); Shen, Jiaxin (1); Xiao, Zhuangqing (1); Cai, Kaiyu (1); Yu, Youhai (3); Min, Yong (1); Epstein, Arthur J. (4)

Author affiliation:(1) Institute of Adv. Mater., Nanjing University of Posts and Telecommunications, 9 Wenyuan Road, Nanjing, Jiangsu; 210046, China; (2) State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemistry and Chemical Engineering, Nanjing Tech University, 5 Xinmofan Road, Nanjing; 210009, China; (3) Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Science, Xi'an; 710119, China; (4) Department of Physics and Chemistry and Biochemistry, Ohio State University, 100 West 18th Avenue, Columbus; OH; 43210, United States

Corresponding author:Peng, Li(lisa.lipeng@gmail.com)

Source title:Synthetic Metals

Abbreviated source title:Synth Met

Volume:220

Issue date:October 1, 2016

Publication year:2016

Pages:227-235

Language:English

ISSN:03796779

CODEN:SYMEDZ

Document type:Journal article (JA)

Publisher:Elsevier Ltd

Abstract:In this work, a 3D porous graphene (3DrGO) was prepared by a hydrothermal assembly process of graphene oxide (GO) using polyfurfuryl alcohol (PFA) spheres as the template followed by thermal reduction. The introduction of PFA spheres can effectively enlarge the interspace between graphene sheets and suppresses their re-stacking in the thermal treatment. The 3DrGO was further composted with PANI nanowire. The structure and the property of 3DrGO and 3DrGO/PANI composite have been characterized by transmission electron microscopy, scanning electron microscopy, X-ray photoelectron spectroscopy, Fourier transform infrared spectroscopy, X-ray diffraction, cyclic voltammetry, galvanostatic charge-discharge test and electrochemical impedance spectroscopy. Electrochemical test reveals that the 3DrGO has good capacitance performance of 104 F/g at current charge-discharge current density of 1A/g and the capacitance performance increase to 530 F/g after further composed with PANI nanowire. Both 3DrGO and 3DrGO/PANI show excellent capacity retention rates of 95% and 88%, respectively, after 1000 cycles. All these impressive results demonstrate that the material obtained by this approach is greatly promising for application in high-performance supercapacitors. © 2016 Elsevier B.V. All rights reserved.

Number of references:50

Main heading:X ray photoelectron spectroscopy

Controlled terms:Capacitance - Capacitors - Composite materials - Cyclic voltammetry - Electric discharges - Electrochemical impedance spectroscopy - Electron microscopy - Fourier transform infrared spectroscopy - Graphene - High resolution transmission electron microscopy - Lithium compounds - Nanowires - Polyacrylonitriles - Polyaniline - Scanning electron microscopy - Spheres - Transmission electron microscopy - X ray diffraction

Uncontrolled terms:Capacitance performance - Galvanostatic charge discharges - Polyfurfuryl alcohols - Porous - Super capacitor - Supercapacitor application - Three-dimensional graphene - Transmission electron

Classification code:701.1 Electricity: Basic Concepts and Phenomena - 704.1 Electric Components - 741.3 Optical Devices and Systems - 761 Nanotechnology - 801 Chemistry - 801.4.1 Electrochemistry - 804 Chemical Products Generally - 815.1.1 Organic Polymers - 933 Solid State Physics - 951 Materials Science

DOI:10.1016/j.synthmet.2016.06.008

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20162302456306

Title:Point cloud boundary detection in preprocessor of optical-mechanical integrated simulation

Authors:Xu, Guangzhou (1, 2); Ruan, Ping (1)

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

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

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

Volume:45

Issue:4

Issue date:April 25, 2016

Publication year:2016

Article number:0428001

Language:Chinese

ISSN:10072276

Document type:Journal article (JA)

Publisher:Chinese Society of Astronautics

Abstract:To resolve the data processing problem of point cloud for optical surface in general interface of optical-mechanical integrated simulation, the surface data processing method based on point cloud boundary detection was presented. First, the surface data preprocessing method in integrated simulation was discussed and effect of boundary detection in surface preprocessing data was also referred. Then, boundary detection algorithm referring to several techniques was researched including the data organization of point cloud, the small tangential plane fitting algorithm of the K-nearest neighbor node and the judgment of boundary node. Based on the research of point cloud boundary detection algorithm, the primary data structure and the program realization was discussed and by the extraction of demonstrated surface point cloud, the algorithm of boundary detection was proved to be right and effective. The algorithm of boundary detection provides the new technical reference for data process of optical surface. © 2016, Editorial Board of Journal of Infrared and Laser Engineering. All right reserved.

Number of references:9

Page count:6

Main heading:Data handling

Controlled terms:Algorithms - Image segmentation - Motion compensation - Nearest neighbor search - Signal detection

Uncontrolled terms:Boundary detection - Boundary detection algorithms - Data organization - Integrated simulations - K-nearest neighbors - Point cloud - Preprocessor - Processing problems

Classification code:716.1 Information Theory and Signal Processing - 723.2 Data Processing and Image Processing - 921.5 Optimization Techniques

DOI:10.3788/IRLA201645.0428001

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20162302468405

Title:Research progress of new space mirror materials

Authors:Wang, Yongjie (1, 2); Xie, Yongjie (1); Ma, Zhen (1); Xu, Liang (1); Ding, Jiaoteng (1)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (2) State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an; 710072, China

Source title:Cailiao Daobao/Materials Review

Abbreviated source title:Cailiao Daobao/Mater. Rev.

Volume:30

Issue:4

Issue date:April 10, 2016

Publication year:2016

Pages:143-147 and 153

Language:Chinese

ISSN:1005023X

Document type:Journal article (JA)

Publisher:Cailiao Daobaoshe/ Materials Review

Abstract:Traditional mirror materials cannot meet the lager and lighter requirement of the future space reflectors. Carbon fiber-reinforced composites will become significant ones in the space mirror field due to their outstanding properties. In this paper, three composites (C/SiC, CFRP and C/C composites) are introduced, which have great potential on space mirrors application. The properties, fabrication methods, application status, technological constraints of these composites are also described. Finally, the corresponding prospective application and development of carbon reinforced composites are anticipated. © 2016, Materials Review Magazine. All right reserved.

Number of references:42

Main heading:Mirrors

Controlled terms:Carbon carbon composites - Fiber reinforced plastics - Reflection - Reinforcement

Uncontrolled terms:Application status - Carbon fiber reinforced composite - Large aperture - Lightweight - Prospective applications - Reinforced composites - Space reflectors - Technological constraints

Classification code:415.4 Structural Materials Other Than Metal, Plastics or Wood - 741.3 Optical Devices and Systems - 951 Materials Science

DOI:10.11896/j.issn.1005-023X.2016.07.025

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20162102408664

Title:Measuring Collectiveness via Refined Topological Similarity

Authors:Li, Xuelong (1); Chen, Mulin (2); Wang, Qi (2)

Author affiliation:(1) Center for Optical Imagery Analysis and Learning (OPTIMAL), State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (2) School of Computer Science and Center for Optical Imagery Analysis and Learning (OPTIMAL), Northwestern Polytechnical University, Xi'an; Shaanxi; 710072, China

Corresponding author:Chen, Mulin(chenmulin@mail.nwpu.edu.cn)

Source title:ACM Transactions on Multimedia Computing, Communications and Applications

Abbreviated source title:ACM Trans. Multimedia Comput. Commun. Appl.

Volume:12

Issue:2

Issue date:March 2016

Publication year:2016

Article number:34

Language:English

ISSN:15516857

E-ISSN:15516865

Document type:Journal article (JA)

Publisher:Association for Computing Machinery

Abstract:Crowd system has motivated a surge of interests in many areas of multimedia, as it contains plenty of information about crowd scenes. In crowd systems, individuals tend to exhibit collective behaviors, and the motion of all those individuals is called collective motion. As a comprehensive descriptor of collective motion, collectiveness has been proposed to reflect the degree of individuals moving as an entirety. Nevertheless, existing works mostly have limitations to correctly find the individuals of a crowd system and precisely capture the various relationships between individuals, both of which are essential to measure collectiveness. In this article, we propose a collectiveness-measuring method that is capable of quantifying collectiveness accurately. Our main contributions are threefold: (1) we compute relatively accurate collectiveness bymaking the tracked feature points represent the individuals more precisely with a point selection strategy; (2) we jointly investigate the spatial-temporal information of individuals and utilize it to characterize the topological relationship between individuals by manifold learning; (3) we propose a stability descriptor to deal with the irregular individuals, which influence the calculation of collectiveness. Intensive experiments on the simulated and real world datasets demonstrate that the proposed method is able to compute relatively accurate collectiveness and keep high consistency with human perception. © 2016 Copyright held by the owner/author(s).

Number of references:57

Main heading:Topology

Controlled terms:Feature extraction

Uncontrolled terms:Collective behavior - collectiveness - Crowd analysis - manifold - Multimedia - Real-world datasets - Topological relationships - Topological similarity

Classification code:921.4 Combinatorial Mathematics, Includes Graph Theory, Set Theory

DOI:10.1145/2854000

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20162202437127

Title:Superpixel Optimization Using Higher Order Energy

Authors:Peng, Jianteng (1); Shen, Jianbing (1); Yao, Angela (2); Li, Xuelong (3)

Author affiliation:(1) Beijing Laboratory of Intelligent Information Technology, School of Computer Science, Beijing Institute of Technology, Beijing; 100081, China; (2) Institute of Computer Science II, University of Bonn, Bonn; 53113, Germany; (3) Center for OPTical IMagery Analysis and Learning, 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:Shen, Jianbing(shenjianbing@bit.edu.cn)

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

Abbreviated source title:IEEE Trans Circuits Syst Video Technol

Volume:26

Issue:5

Issue date:May 2016

Publication year:2016

Pages:917-927

Article number:7103037

Language:English

ISSN:10518215

CODEN:ITCTEM

Document type:Journal article (JA)

Publisher:Institute of Electrical and Electronics Engineers Inc.

Abstract:A novel superpixel extraction algorithm using a higher order energy optimization framework is proposed in this paper. We first adopt the k-means clustering technique to quickly get an initial superpixel result. Then a higher order energy function is employed to optimize and refine these initial superpixels. We use a more general higher order energy function that includes a first-order data term, a second-order smoothness term, and a higher order term. The presegments are employed to provide the prior information of sufficient edges and segment regions for our higher order energy term. According to the texture measurement in different local regions, our algorithm adaptively computes the proper ratios of different energy terms to obtain a better superpixel performance. The experimental results demonstrate that our method using the higher order energy generates better results with well-aligned boundaries and homogeneous effects than the existing superpixel algorithms. © 2015 IEEE.

Number of references:35

Main heading:Pixels

Controlled terms:Algorithms - Optimization

Uncontrolled terms:Extraction algorithms - Higher order terms - Higher-order - K-means clustering techniques - Prior information - Second orders - Super pixels - Texture measurement

Classification code:921.5 Optimization Techniques

DOI:10.1109/TCSVT.2015.2430631

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20160801981523

Title:An Orthogonal Method for Measurement Matrix Optimization

Authors:Pan, Jinfeng (1, 2, 3); Qiu, Yuehong (1)

Author affiliation:(1) Space Optics Laboratory, Xi’an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi’an, China; (2) University of Chinese Academy of Sciences, Beijing, China; (3) School of Electric and Electronic Engineering, Shandong University of Technology, Zibo, China

Corresponding author:Pan, Jinfeng(panjinfeng@opt.ac.cn)

Source title:Circuits, Systems, and Signal Processing

Abbreviated source title:Circ Syst Signal Process

Volume:35

Issue:3

Issue date:March 1, 2016

Publication year:2016

Pages:837-849

Language:English

ISSN:0278081X

E-ISSN:15315878

CODEN:CSSPEH

Document type:Journal article (JA)

Publisher:Birkhauser Boston

Abstract:Compressive sensing theory states that signals can be sampled at a much smaller rate than that required by the Nyquist sampling theorem, because the sampling of a signal in the former is performed as a relatively small number of its linear measurements. Thus, the design of a measurement matrix is important in compressive sensing framework. A random measurement matrix optimization method is proposed in this study based on the incoherence principle of compressive sensing, which requires the mutual coherence of information operator to be small. The columns with mutual coherence are orthogonalized iteratively to decrease the mutual coherence of the information operator. The orthogonalization is realized by replacing the columns with the orthogonal matrix (Formula presented.) of their QR factorization. An information operator with smaller mutual coherence is acquired after the optimization, leading to an improved measurement matrix in terms of its relationship with the information operator. Results of several experiments show that the improved measurement matrix can reduce its mutual coherence with dictionaries compared with the random measurement matrix. The signal reconstruction error also decreases when the optimized measurement matrix is utilized. © 2015, Springer Science+Business Media New York.

Number of references:32

Main heading:Matrix algebra

Controlled terms:Compressed sensing - Factorization - Iterative methods - Signal reconstruction - Signal sampling

Uncontrolled terms:Compressive sensing - Information operators - Measurement matrix - Mutual coherence - Nyquist sampling theorem - Optimized measurement matrixes - Orthogonalization - QR factorizations

Classification code:716.1 Information Theory and Signal Processing - 921 Mathematics - 922 Statistical Methods

DOI:10.1007/s00034-015-0107-4

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20160902037313

Title:Deployable structure design and analysis for space membrane diffractive telescope

Authors:Zheng, Yaohui (1, 2); Ruan, Ping (1); Cao, Shang (1, 2)

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

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

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

Volume:45

Issue:1

Issue date:January 25, 2016

Publication year:2016

Article number:0118004

Language:Chinese

ISSN:10072276

Document type:Journal article (JA)

Publisher:Chinese Society of Astronautics

Abstract:In order to satisfy the demand for the big aperture diffraction space telescope, a primary lenses deployable structure for space membrane diffractive telescope was investigated. Firstly, after analysis of the characteristics of diffraction imaging about the big aperture membrane diffraction telescope, the main requirements for deployable structure were put forward. Then according to these design requirements for the deployable structure, a 3D solid model was designed. Finally, with the help of Adams, a simulation model was established and analyzed. The results show that the structure under the driving of the rotating drive components is in line with the design form of exercise and achieved smooth and reliable movement. This deployable structure may provide a new train of thought for the design of large aperture membrane diffraction telescope. © 2016, Editorial Board of Journal of Infrared and Laser Engineering. All right reserved.

Number of references:9

Page count:5

Main heading:Structural design

Controlled terms:Design - Diffraction - Space optics

Uncontrolled terms:3D solid model - Aperture diffraction - Deployable mechanisms - Deployable structure - Diffraction imaging - Fold methods - Large aperture - Simulation model

Classification code:408.1 Structural Design, General - 656.1 Space Flight

DOI:10.3788/IRLA201645.0118004

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20143600025676

Title:Fuzzy bag of words for social image description

Authors:Li, Yanshan (1, 2, 3); Liu, Weiming (2); Huang, Qinghua (1); Li, Xuelong (4)

Author affiliation:(1) School of Electronic and Information Engineering, South China University of Technology, Guangzhou, China; (2) School of Civil Engineering and Transportation, South China University of Technology, Guangzhou, China; (3) Shenzhen University, Shenzhen, China; (4) The 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; Shaanxi, China

Corresponding author:Huang, Qinghua(qhhuang@scut.edu.cn)

Source title:Multimedia Tools and Applications

Abbreviated source title:Multimedia Tools Appl

Volume:75

Issue:3

Issue date:February 1, 2016

Publication year:2016

Pages:1371-1390

Language:English

ISSN:13807501

E-ISSN:15737721

CODEN:MTAPFB

Document type:Journal article (JA)

Publisher:Springer New York LLC

Abstract:Rapid growth of social media resources brings huge challenges and opportunities for image description technologies. The performance of image description method directly affects the accuracy of image retrieval, image annotation and image recognition. Bag of Words (BoW) as an efficient approach to describing the images has been attracting more and more attention. However, in traditional BoW, the maps between the words in the codebook and the features extracted from the images are actually ambiguous. As the Fuzzy Sets Theory (FST) is a powerful means for dealing with uncertainty efficiently, we utilize the FST to solve the problem caused by the ambiguity between the features and words. Accordingly, we propose a new type of BoW named as FBoW to describe images based on FST. Firstly, the features are extracted from the images. Secondly, k-means is utilized to learn the codebook. Thirdly, a fuzzy membership function is designed to measure the similarity between the features and words. The optimal parameters of the fuzzy membership function are obtained by using a Genetic Algorithm (GA). The histogram is generated by adding up the fuzzy membership values of each word to describe the images. The experimental results show that the proposed FBoW outperforms traditional BoW for social image description. © 2014, Springer Science+Business Media New York.

Number of references:36

Main heading:Image retrieval

Controlled terms:Fuzzy set theory - Fuzzy sets - Genetic algorithms - Image processing - Image recognition - Membership functions

Uncontrolled terms:Bag of words - Fuzzy membership function - Fuzzy membership values - Fuzzy sets theory - Image annotation - Image descriptions - Optimal parameter - Social images

Classification code:921 Mathematics - 921.4 Combinatorial Mathematics, Includes Graph Theory, Set Theory

DOI:10.1007/s11042-014-2138-4

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20161002066673

Title:Application of Grey Model GM(1, 1) to Ultra Short-Term Predictions of Universal Time

Authors:Lei, Yu (1, 2, 3); Guo, Min (4); Zhao, Danning (1, 3); Cai, Hongbing (1, 2); Hu, Dandan (4)

Author affiliation:(1) National Time Service Center, Chinese Academy of Sciences, China; (2) Key Laboratory of Time and Frequency Primary Standards, Chinese Academy of Sciences, China; (3) University of Chinese Academy of Sciences, China; (4) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, China

Source title:Artificial Satellites

Abbreviated source title:Artif. Satell.

Volume:51

Issue:1

Issue date:March 1, 2016

Publication year:2016

Pages:19-29

Language:English

ISSN:0208841X

E-ISSN:20836104

Document type:Journal article (JA)

Publisher:Polish Academy of Sciences

Abstract:A mathematical model known as one-order one-variable grey differential equation model GM(1, 1) has been herein employed successfully for the ultra short-term (<10days) predictions of universal time (UT1-UTC). The results of predictions are analyzed and compared with those obtained by other methods. It is shown that the accuracy of the predictions is comparable with that obtained by other prediction methods. The proposed method is able to yield an exact prediction even though only a few observations are provided. Hence it is very valuable in the case of a small size dataset since traditional methods, e.g., least-squares (LS) extrapolation, require longer data span to make a good forecast. In addition, these results can be obtained without making any assumption about an original dataset, and thus is of high reliability. Another advantage is that the developed method is easy to use. All these reveal a great potential of the GM(1, 1) model for UT1-UTC predictions. © 2016 Artificial Satellites.

Number of references:18

Main heading:Forecasting

Controlled terms:Differential equations - Least squares approximations - System theory

Uncontrolled terms:Differential equation model - GM (1 , 1) model - Grey Model - Grey model GM(1 ,1) - High reliability - Prediction methods - Short term prediction - Universal time

Classification code:921.2 Calculus - 921.6 Numerical Methods - 961 Systems Science

DOI:10.1515/arsa-2016-0002

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20161502242261

Title:Various soliton molecules in large anomalous dispersion fiber laser

Authors:Han, Xiaoxiang (1); Liu, Xueming (1)

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

Source title:2015 11th Conference on Lasers and Electro-Optics Pacific Rim, CLEO-PR 2015

Abbreviated source title:Conf. Lasers Electro-Opt. Pac. Rim, CLEO-PR

Volume:2

Part number:2 of 4

Monograph title:2015 11th Conference on Lasers and Electro-Optics Pacific Rim, CLEO-PR 2015

Issue date:January 7, 2016

Publication year:2016

Article number:7376110

Language:English

ISBN-13:9781467371094

Document type:Conference article (CA)

Conference name:11th Conference on Lasers and Electro-Optics Pacific Rim, CLEO-PR 2015

Conference date:August 24, 2015 - August 28, 2015

Conference location:Busan, Korea, Republic of

Conference code:118957

Publisher:Institute of Electrical and Electronics Engineers Inc.

Abstract:Soliton molecules (SMs) induced by the spectral filtering with the phase difference of 0, π, π/2 and multiple separations are observed. It is found that the equilibrium distances of SMs are multiple and discrete. © 2015 IEEE.

Number of references:22

Main heading:Solitons

Controlled terms:Fiber lasers - Molecules

Uncontrolled terms:Anomalous dispersion - Equilibrium distances - Phase difference - Soliton molecules - Spectral filtering

Classification code:744.4 Solid State Lasers - 931.3 Atomic and Molecular Physics

DOI:10.1109/CLEOPR.2015.7376110

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20161802333755

Title:Reduction of phase noise to amplitude noise conversion in silicon waveguide-based phase-sensitive amplification

Authors:Ma, Yonghua (1); Liu, Hongjun (1); Sun, Qibing (1); Huang, Nan (1); Wang, Zhaolu (1)

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

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

Source title:Applied Optics

Abbreviated source title:Appl. Opt.

Volume:55

Issue:12

Issue date:April 20, 2016

Publication year:2016

Pages:3140-3144

Language:English

ISSN:1559128X

E-ISSN:21553165

CODEN:APOPAI

Document type:Journal article (JA)

Publisher:OSA - The Optical Society

Abstract:We use a vector phase sensitive amplification (PSA) scheme, which can eliminate the inherent phase noise (PN) to amplitude noise (AN) conversion in a conventional PSA process. A dispersion-engineered silicon strip waveguide is used to investigate the vector PSA scheme at the telecom wavelengths. The phase-dependent gain and phase-tophase transfer functions as well as constellation diagram at different signal polarization states (SPSs) are numerically analyzed. It is found that the PN to AN conversion is completely suppressed when the SPS is identical to one of the pump polarization states. Moreover, the binary phase shift keying signal is regenerated by the proposed vector PSA scheme, and the error vector magnitude is calculated to assess the regeneration capacity. Our results have potential application in all-optical signal processing. © 2016 Optical Society of America.

Number of references:27

Main heading:Vectors

Controlled terms:Amplification - Binary phase shift keying - Optical signal processing - Phase noise - Phase shift - Phase shift keying - Phase shifters - Polarization - Signal processing - Waveguides

Uncontrolled terms:All-optical signal processing - Amplitude-noise conversion - Binary phase-shift keying signals - Constellation diagrams - Error vector magnitude - Phase-sensitive amplifications - Regeneration capacity - Signal polarization

Classification code:701.2 Magnetism: Basic Concepts and Phenomena - 713.5 Electronic Circuits Other Than Amplifiers, Oscillators, Modulators, Limiters, Discriminators or Mixers - 714.3 Waveguides - 716.1 Information Theory and Signal Processing - 921.1 Algebra

DOI:10.1364/AO.55.003140

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20161602257796

Title:Research on detection sensitivity distribution regularity of lens-light-screen

Authors:Tian, Hui (1, 2); Ni, Jin-Ping (2); Jiao, Ming-Xing (1); Hu, Xun (3); Gao, Fen (2)

Author affiliation:(1) School of Mechanical and Precision Instrumental Engineering, Xi'an University of Technology, Xi'an; Shaanxi, China; (2) School of Optoelectronic Engineering, Xi'an Technological University, Xi'an; Shaanxi, China; (3) Chongqing Changan Industry (Group) Co. Ltd., Chongqing, China

Source title:Binggong Xuebao/Acta Armamentarii

Abbreviated source title:Binggong Xuebao

Volume:37

Issue:2

Issue date:February 1, 2016

Publication year:2016

Pages:325-331

Language:Chinese

ISSN:10001093

CODEN:BIXUD9

Document type:Journal article (JA)

Publisher:China Ordnance Society

Abstract:In order to meet the testing requirement of indoor optical target with large detection area, two patterns of lens-light-screen's engineering realization method are studied, of which one is sector lens-light-screen, and the other is rectangle lens-light-screen. The working principle of each kind of lens-light-screen is analyzed. The luminous flux may be changed when a flying projectile goes through the lens-light-screen in different position, of which the corresponding formulas are deduced based on the photometry principle. The sensitivity distribution regularity of each kind of lens-light-screen is simulated using Matlab. It is verified by the firing tests of air gun bullets. The results show that the signal amplitude of the projectile collected by an oscilloscope is in conformity with the sensitivity simulation results, which provides a reference for the engineering design of the optical targets with lager detection area. © 2016, China Ordnance Society. All right reserved.

Number of references:18

Main heading:Lenses

Controlled terms:MATLAB - Photometry - Projectiles

Uncontrolled terms:Detection sensitivity - Engineering design - Engineering realizations - Science and Technology - Sensitivity distributions - Sensitivity Simulation - Testing requirements - Trajectory parameters

Classification code:741.3 Optical Devices and Systems - 921 Mathematics - 941.4 Optical Variables Measurements

DOI:10.3969/j.issn.1000-1093.2016.02.019

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20164903101480

Title:Detection and tracking of multi-space junks in star images

Authors:Deng, Wenkang (1, 2); Song, Zongxi (1)

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

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

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:10033

Monograph title:Eighth International Conference on Digital Image Processing, ICDIP 2016

Issue date:2016

Publication year:2016

Article number:100330N

Language:English

ISSN:0277786X

E-ISSN:1996756X

CODEN:PSISDG

ISBN-13:9781510605039

Document type:Conference article (CA)

Conference name:8th International Conference on Digital Image Processing, ICDIP 2016

Conference date:May 20, 2016 - May 23, 2016

Conference location:Chengu, China

Conference code:124814

Sponsor:Chengdu University of Information Technology; Chinese Academy of Sciences Chengdu Institute of Computer Applications; International Association of Computer Science and Information Technology; Sichuan Province Computer Federation

Publisher:SPIE

Abstract:An algorithm of detection and tracking of multiple small moving space junks under the complex star sequential images is proposed in this paper. Firstly we take image smoothing and adaptive threshold segment to improve the weight of junks. Furthermore, back neighborhood frame correlation (BNFC) is proposed to detect and locate the junk which is sheltered by bigger interfaced stars. Through cross projection method, we could extract the centroid of the moving junks. At last, the Kalman Filter is used to track and estimate the trajectory of moving junks. Experiments show that through this algorithm the multiple small space junks could be detected and tracked effectively and accurately under complex star background with good performance in low error rate and good real-time processing. © 2016 SPIE.

Number of references:7

Main heading:Space debris

Controlled terms:Image processing - Image segmentation - Kalman filters - Stars - Tracking (position)

Uncontrolled terms:Adaptive thresholds - Cross projection - Detection and tracking - Frame correlations - Projection method - Realtime processing - Sequential images - Small moving space junks

Classification code:656.1 Space Flight - 657.2 Extraterrestrial Physics and Stellar Phenomena

DOI:10.1117/12.2244285

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20164903096321

Title:The new high-speed switching study of ultra-short laser pulse technology

Authors:Sun, Bo (1, 2, 3); Gou, Yongsheng (1, 2, 3); Wang, Dahui (4); Liu, Baiyu (1, 2); Zhao, Xueqing (4); Bai, Yonglin (1, 2)

Author affiliation:(1) Key Laboratory of Ultra-fast Diagnostics Technology of CAS, Xi'An Institute of Optics and Precision Mechanics, Xi'an, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Xi'an, China; (3) University of Chinese Academy of Sciences, Beijing, China; (4) State Key Laboratory of Laser Interaction with Matter, Northwest Institute of Nuclear Technology, Xi'an, China

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

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:9686

Monograph title:8th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optoelectronic Materials and Devices

Issue date:2016

Publication year:2016

Article number:96860Z

Language:English

ISSN:0277786X

E-ISSN:1996756X

CODEN:PSISDG

ISBN-13:9781628419214

Document type:Conference article (CA)

Conference name:8th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optoelectronic Materials and Devices, AOMATT 2016

Conference date:April 26, 2016 - April 29, 2016

Conference location:Suzhou, China

Conference code:124821

Sponsor:Chinese Academy of Sciences, Institute of Optics and Electronics (IOE); The Chinese Optical Society (COS)

Publisher:SPIE

Abstract:Ultrafast phenomenon has presented widely in natural phenomenon and scientific and technological research. Therefore, study on ultrafast phenomenon is of great important in many research and technology fields. In recent years, the development and application of ultra-short laser pulse has been covered many areas. It has been developed into a powerful tool used to research ultrafast phenomena. In the implementation process of the ultra-short laser pulses, high-speed switching plays a vital role. The difficulty of high-speed switching design is to make the ultrafast electric pulse load on the both ends of the crystal with minimum distortion and delay. It is very difficult to switch electro-optic crystal at a high frequency in traditional method. In this paper, a new method is designed, which combined the electro-optic crystal and micro-strip line. The crystal is a part of the transmission path and the signal path of the micro-strip line is broadened or narrowed continuously to make the impedance matching to 50 ohm. The good match between pulse signal and the crystal make sure the high frequency switches of the crystal. The amplitude loss is less than 11%, and the delay is less than 1 nanosecond. © 2016 SPIE.

Number of references:5

Main heading:Electric lines

Controlled terms:Impedance matching (electric) - Laser pulses - Manufacture - Materials testing - Microstrip lines - Optoelectronic devices - Strip telecommunication lines - Switching - Ultrafast lasers - Ultrafast phenomena - Ultrashort pulses

Uncontrolled terms:Electric control - Electric pulse - High-speed switching - Micro-strips - Short laser pulse

Classification code:537.1 Heat Treatment Processes - 706.2 Electric Power Lines and Equipment - 741.3 Optical Devices and Systems - 744.1 Lasers, General - 951 Materials Science

Numerical data indexing:Electrical_Resistance 5.00e+01Ohms, Percentage 1.10e+01%, Time 1.00e-09s

DOI:10.1117/12.2242364

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20165003129450

Title:Research progress of magneto-optical property of chalcogenide glasses

Authors:Chen, Gang (1, 2); Xu, Yantao (1, 3); Guo, Haitao (1); Lu, Min (1); Yu, Fengxia (2); Xiao, Xusheng (1, 3); Peng, Bo (1)

Author affiliation:(1) Xi'an Institute of Optics and Procession Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (2) School of Materials Science and Engineering, Changchun University of Science and Technology, Changchun; 130022, China; (3) University of Chinese Academy of Sciences, Beijing; 100049, China

Corresponding author:Guo, Haitao(guoht_001@opt.ac.cn)

Source title:Cailiao Daobao/Materials Review

Abbreviated source title:Cailiao Daobao/Mater. Rev.

Volume:30

Issue:10

Issue date:October 10, 2016

Publication year:2016

Pages:84-88

Language:Chinese

ISSN:1005023X

Document type:Journal article (JA)

Publisher:Cailiao Daobaoshe/ Materials Review

Abstract:Recently, the magneto-optical chalcogenide glasses have attracted great interest in the field of magneto-optical materials owing to their excellent properties, including but not limited to the independence of Verdet constant to temperature, easy fabrication of optical fiber and optical waveguide, etc. The progress in investigation and development of magneto-optical properties in chalcogenide glasses is systematically introduced. Meanwhile, the factors that influence the Verdet constant of chalcogenide glasses are analyzed in detail. In addition, the possible development direction for chalcogenide glass is discussed. © 2016, Materials Review Magazine. All right reserved.

Number of references:44

Main heading:Optical properties

Controlled terms:Chalcogenides - Faraday effect - Glass - Optical fiber fabrication - Optical fibers - Optical glass

Uncontrolled terms:Chalcogenide glass - Development directions - Easy fabrication - Magnetic optical glass - Magneto-optical - Magneto-optical materials - Magnetooptical properties - Verdet constant

Classification code:701.1 Electricity: Basic Concepts and Phenomena - 741.1 Light/Optics - 741.1.2 Fiber Optics - 804.2 Inorganic Compounds - 812.3 Glass

DOI:10.11896/j.issn.1005-023X.2016.19.012

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20164502994209

Title:Yb-doped large-mode-Area aluminosilicate laser fibre fabricated by chelate precursor doping technique

Authors:Peng, Kun (1, 2, 3); Wang, Zhen (1, 2, 3); Zhan, Huan (2); Ni, Li (2); Gao, Cong (2); Wang, Xiaolong (2); Wang, Yuying (2); Wang, Jianjun (2); Jing, Feng (2); Lin, Aoxiang (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) Laser Fusion Research Center, College of Materials Science and Opto-Electronic Technology, China Academy of Engineering Physics (CAEP), Mianyang; 621900, China; (3) Graduate School of Chinese Academy of Sciences (CAS), Beijing; 100049, China

Corresponding author:Lin, Aoxiang(aoxiang.research@gmail.com)

Source title:Electronics Letters

Abbreviated source title:Electron. Lett.

Volume:52

Issue:23

Issue date:November 10, 2016

Publication year:2016

Pages:1942-1944

Language:English

ISSN:00135194

CODEN:ELLEAK

Document type:Journal article (JA)

Publisher:Institution of Engineering and Technology

Abstract:A modified chelate precursor doping technique using high-purity materials and accurate gas flow control system is proposed to fabricate an efficient ytterbium-doped large-mode-Area silica fibre for laser development. This technique enables to make homogeneous large-core preform with symmetrical shape, relatively low numerical aperture of ∼0.06 and large-core size of over 4 mm. Homemade preform was drawn into standard fibre for testing and fully characterised by electron probe microanalysis and time-of-flight secondary ion mass spectrometry. On the basis of two-stage master oscillator power amplifier system, 1 kW laser output with slope efficiency of 81.0% was realised at ∼1064 nm. © The Institution of Engineering and Technology 2016.

Number of references:13

Main heading:Secondary ion mass spectrometry

Controlled terms:Chelation - Electron probe microanalysis - Flight control systems - Flow of gases - Mass spectrometry - Optical waveguides - Power amplifiers - Preforming - Ytterbium

Uncontrolled terms:Chelate precursor - Doping techniques - High purity materials - Large-core size - Master oscillator power amplifier systems - Numerical aperture - Slope efficiencies - Time of flight secondary ion mass spectrometry

Classification code:547.2 Rare Earth Metals - 631.1.2 Gas Dynamics - 652.3 Aircraft Instruments and Equipment - 713.1 Amplifiers - 714.3 Waveguides - 801 Chemistry - 802.2 Chemical Reactions

Numerical data indexing:Percentage 8.10e+01%, Power 1.00e+03W, Size 4.00e-03m

DOI:10.1049/el.2016.3350

Funding Details: Number; Acronym; Sponsor: 11474257; NSFC; National Natural Science Foundation of China - Number; Sponsor: 2015M582756XB; China Postdoctoral Science Foundation - Number; Acronym; Sponsor: 51602295; NSFC; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20164603012498

Title:Initial cumulative effects in femtosecond pulsed laser-induced periodic surface structures on bulk metallic glasses

Authors:Li, Chen (1, 2, 3); Zhang, Hao (1); Cheng, Guanghua (2); Faure, Nicolas (1); Jamon, Damien (1); Colombier, Jean-Philippe (1); Stoian, Razvan (1)

Author affiliation:(1) Laboratoire Hubert Curien, UMR 5516 CNRS, Université de Lyon, Université Jean Monnet, Saint Etienne; 42000, France; (2) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, CAS, Xi'an, Shaanxi; 710119, China; (3) University of Chinese Academy of Science, Beijing; 10049, China

Corresponding author:Stoian, Razvan(razvan.stoian@univ-st-etienne.fr)

Source title:Journal of Laser Micro Nanoengineering

Abbreviated source title:J. Laser Micro Nanoeng.

Volume:11

Issue:3

Issue date:2016

Publication year:2016

Pages:357-365

Language:English

E-ISSN:18800688

Document type:Journal article (JA)

Publisher:Japan Laser Processing Society

Abstract:We investigate initial cumulative irradiation effects leading to variable surface topographies and nanoscale roughness, and triggering eventually the formation of laser-induced periodic surface structures (LIPSS) on Zr-based bulk metallic glasses (Zr41.2Ti13.8Cu12.5Ni10Be25.5(at%)). We discuss interconnected aspects related to electronic excitation and optical transients, potential variations in the cartography of thermally-driven chemical modifications and topographical features assisting the surface coupling of the electromagnetic field. The transient optical properties of Zr-based BMG surfaces upon ultrafast irradiation, measured by a two-angle time-resolved single-pump double-probe ellipsometry method, show a remarkable constancy up to the point of optical damage and rapid gas-phase transition beyond. In intermediate and low exposure conditions, in the vicinity of the damage domain, multi-pulse incubation effects determine the appearance of nanoscale surface structures. The aspects discussed here involve primarily the progression of nanoscale structuring with an increasing number of fs laser pulses starting from a rough surface and evolving towards ordered corrugation. We emphasize the role of initial roughness in determining light coupling and the generation of regular stationary patterns of scattered light, localized energy absorption and spatially-variant ablation or modulated temperature-driven factors for surface relief. From a material perspective, energy dispersive X-ray spectrometry (EDX) analysis shows potential selective vaporization of light elements, leading to gradual compositional changes and proving a spatially-modulated temperature pattern. A formation scenario is proposed involving interference between the incident laser and scattered light potentially mediated by localized surface plasmons. Finite-difference time-domain (FDTD) simulations are applied to validate the mechanism, showing that LIPSS appear intrinsically related to the surface superposition of electromagnetic waves.

Number of references:33

Main heading:Pulsed lasers

Controlled terms:Chemical elements - Chemical modification - Electric excitation - Electromagnetic fields - Electromagnetic waves - Energy dispersive spectroscopy - Finite difference time domain method - Glass - Irradiation - Laser pulses - Light scattering - Maps - Metallic glass - Nanotechnology - Optical properties - Periodic structures - Surface roughness - Surface scattering - Surface structure - Time domain analysis - Ultrafast lasers

Uncontrolled terms:Energy dispersive X-ray spectrometry - Femtosecond pulsed laser - Finite-difference time-domain simulation - Laser-induced periodic surface structures - LIPSS - Localized surface plasmon - Ultrafast laser processing - Zr based bulk metallic glass

Classification code:405.3 Surveying - 531 Metallurgy and Metallography - 701 Electricity and Magnetism - 701.1 Electricity: Basic Concepts and Phenomena - 711 Electromagnetic Waves - 741.1 Light/Optics - 744.1 Lasers, General - 761 Nanotechnology - 804 Chemical Products Generally - 812.3 Glass - 921 Mathematics - 931 Classical Physics; Quantum Theory; Relativity

DOI:10.2961/jlmn.2016.03.0014

Funding Details: Number; Acronym; Sponsor: 12-IS04-0002-01; ANR; Agence Nationale de la Recherche - Number; Acronym; Sponsor: 61223007; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 61378019; NSFC; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20164603024553

Title:Preface

Authors:Tan, Tieniu (1); Li, Xuelong (2); Chen, Xilin (3); Zhou, Jie (4); Yang, Jian (5); Cheng, Hong (6)

Author affiliation:(1) Chinese Academy of Sciences, Institute of Automation, Beijing, China; (2) Xi’an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi’an, China; (3) Chinese Academy of Sciences, Institute of Computing Technology, Beijing, China; (4) Tsinghua University, Beijing, China; (5) Nanjing University of Science and Technology, Nanjing, China; (6) University of Electronic Science University of Electronic Science, Chengdu; Sichuan, China

Source title:Communications in Computer and Information Science

Abbreviated source title:Commun. Comput. Info. Sci.

Volume:662

Part number:1 of 2

Monograph title:Pattern Recognition - 7th Chinese Conference, CCPR 2016, Proceedings

Issue date:2016

Publication year:2016

Language:English

ISSN:18650929

ISBN-13:9789811030017

Document type:Journal article (JA)

Conference name:7th Chinese Conference on Pattern Recognition, CCPR 2016

Conference date:November 5, 2016 - November 7, 2016

Conference location:Chengdu, China

Conference code:186049

Publisher:Springer Verlag

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20164603010662

Title:Multimodal learning via exploring deep semantic similarity

Authors:Hu, Di (1); Lu, Xiaoqiang (2); Li, Xuelong (2)

Author affiliation:(1) OPTIMAL, Northwestern Polytechnical University, 127 West Youyi Road, Xi'an Shaanxi, China; (2) OPTIMAL, Chinese Academy of Sciences, Xi'an Institute of Optics and Precision Mechanics, Xi'an Shaanxi, China

Source title:MM 2016 - Proceedings of the 2016 ACM Multimedia Conference

Abbreviated source title:MM - Proc. ACM Multimed. Conf.

Monograph title:MM 2016 - Proceedings of the 2016 ACM Multimedia Conference

Issue date:October 1, 2016

Publication year:2016

Pages:342-346

Language:English

ISBN-13:9781450336031

Document type:Conference article (CA)

Conference name:24th ACM Multimedia Conference, MM 2016

Conference date:October 15, 2016 - October 19, 2016

Conference location:Amsterdam, United kingdom

Conference code:124107

Sponsor:ACM SIGMM

Publisher:Association for Computing Machinery, Inc

Abstract:Deep learning is skilled at learning representation from raw data, which are embedded in the semantic space. Traditional multimodal networks take advantage of this, and maximize the joint distribution over the representations of different modalities. However, the similarity among the representations are not emphasized, which is an important property for multimodal data. In this paper, we will introduce a novel learning method for multimodal networks, named as Semantic Similarity Learning (SSL), which aims at training the model via enhancing the similarity between the highlevel features of different modalities. Sets of experiments are conducted for evaluating the method on different multimodal networks and multiple tasks. The experimental results demonstrate the effectiveness of SSL in keeping the shared information and improving the discrimination. Particularly, SSL shows its ability in encouraging each modality to learn transferred knowledge from the other one when faced with missing data. © 2016 ACM.

Number of references:19

Main heading:Personnel training

Controlled terms:Semantics

Uncontrolled terms:Deep learning - High-level features - Joint distributions - Learning methods - Multi-modal learning - Multimodal network - Semantic similarity - Shared information

Classification code:912.4 Personnel

DOI:10.1145/2964284.2967239

Funding Details: Number; Acronym; Sponsor: 61472413; NSFC; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20164302937814

Title:Simulation of the effects of coated material SEY property on output electron energy distribution and gain of microchannel plates

Authors:Chen, Lin (1, 2, 4); Wang, Xingchao (3); Tian, Jinshou (1, 5); Liu, Chunliang (4); Liu, Hulin (1); Chen, Ping (1, 2); Wei, Yonglin (1); Sai, Xiaofeng (1); Sun, Jianning (3); Si, Shuguang (3); Wang, Xing (1); Lu, Yu (1); Tian, Liping (1, 2); Hui, Dandan (1, 2); Guo, Lehui (1, 2)

Author affiliation:(1) Key Laboratory of Ultra-fast Photoelectric Diagnostics Technology, Xi'an Institute of Optics and Precision Mechanics (XIOPM), Chinese Academy of Sciences (CAS), Xi'an; 710119, China; (2) Graduate School of Chinese Academy of Sciences (CAS), Beijing; 100049, China; (3) North Night Vision Technology (NNVT) Co., Ltd., Nanjing; 210110, China; (4) Xi'an Jiaotong University, Xi'an; 710049, China; (5) Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan; 030006, China

Corresponding author:Tian, Jinshou(tianjs@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:840

Issue date:December 21, 2016

Publication year:2016

Pages:133-138

Language:English

ISSN:01689002

CODEN:NIMAER

Document type:Journal article (JA)

Publisher:Elsevier B.V.

Abstract:To obtain a high spatial resolution of a image intensifier based on microchannel plate (MCP), the long tail in the exit energy distribution of the output electrons (EDOE) is undesirable. The existing solution is increasing the penetration depth of the MCP output electrode, which will result in a serious gain reduction. Coating the MCP output electrode with efficient secondary electron yield (SEY) materials is supposed to be an effective approach to suppress the unfavorable tail component in the EDOE without negative effects on the gain. In our work, a three-dimensional MCP single channel model is developed in CST STUDIO SUITE to systematically investigate the dependences of the EDOE and the gain on the SEY property of the coated material, based on the Finite Integral Technique and Monte Carlo method. The results show that besides the high SEY of the coated material, the low incident energy corresponding to the peak SEY is another essential element affecting the electron yield in the final stage of multiplication and suppressing the output energy spread. © 2016 Elsevier B.V.

Number of references:22

Main heading:Image storage tubes

Controlled terms:Coated materials - Electrodes - Electron emission - Electron energy levels - Electrons - Microchannels - Monte Carlo methods - Secondary emission

Uncontrolled terms:EDOE - Electron energy distributions - Energy distributions - Finite integral techniques - Gain - High spatial resolution - Micro channel plate - Secondary electron yield

Classification code:714.1 Electron Tubes - 813 Coatings and Finishes - 922.2 Mathematical Statistics

DOI:10.1016/j.nima.2016.10.014

Funding Details: Number; Acronym; Sponsor: 11305258; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 2016YFF0100401; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: CXJJ-15S145; CAS; Chinese Academy of Sciences

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20164302952475

Title:Effect of fabrication errors of double-layer BOE on diffractive efficiency

Authors:Ma, Zebin (1); Kang, Fuzeng (1); Wang, Hao (1)

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

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

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

Volume:45

Issue:9

Issue date:September 25, 2016

Publication year:2016

Article number:0918001

Language:Chinese

ISSN:10072276

Document type:Journal article (JA)

Publisher:Chinese Society of Astronautics

Abstract:With the development of optical technology, optic-mechanical-electric technology becomes a trend. An integrated, arrayed and miniaturized optical system was required. Binary optical element is famous for its excellent performance in light-wave transformation. Double-layer binary optical element has high diffraction efficiency over wide wavelength range. However, in the fabrication of double layer BOE, many errors occurred, such as height error, periodic error, multi-mask fabrication error etc.A theoretical analysis of these errors was carried out based on scalar diffraction theory, and a MATLAB simulation was implemented. The simulation result indicated that the diffraction efficiency deteriorated if the height errors occurred in different direction rather than in the same direction. Therefore, height errors from different direction should be avoid in fabrication. If the multi-mask fabrication error is occurred from different direction, the diffraction efficiency will decrease more quickly than from the same direction, so multi-mask fabrication error from different direction should be avoid as much as possible. Compared to height error and multi-mask fabrication error, other four errors have varying degrees of impact on the diffraction efficiency. © 2016, Editorial Board of Journal of Infrared and Laser Engineering. All right reserved.

Number of references:17

Page count:7

Main heading:Errors

Controlled terms:Bins - Diffraction - Diffraction efficiency - Efficiency - Fabrication - Masks - MATLAB - Optical systems

Uncontrolled terms:Binary optical element - Diffractive efficiency - Double layers - Fabrication errors - Matlab simulations - Optical technology - Scalar diffraction theory - Wavelength ranges

Classification code:694.4 Storage - 714.2 Semiconductor Devices and Integrated Circuits - 741.3 Optical Devices and Systems - 913.1 Production Engineering - 921 Mathematics

DOI:10.3788/IRLA201645.0918001

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20163302714287

Title:High-peak-power sub-nanosecond intracavity KTiOPO4 optical parametric oscillator pumped by a dual-loss modulated laser with acousto-optic modulator and single-walled carbon nanotube

Authors:Qiao, Junpeng (1); Zhao, Shengzhi (1); Yang, Kejian (1); Zhao, Jia (1); Li, Guiqiu (1); Li, Dechun (1); Li, Tao (1); Qiao, Wenchao (1); Lu, Jianren (1); Wang, Yonggang (2); Chu, Hongwei (1); Luan, Chao (1)

Author affiliation:(1) School of Information Science and Engineering, Shandong University, Jinan; 250100, 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

Source title:Applied Physics Express

Abbreviated source title:Appl. Phys. Express

Volume:9

Issue:8

Issue date:August 2016

Publication year:2016

Article number:082701

Language:English

ISSN:18820778

E-ISSN:18820786

Document type:Journal article (JA)

Publisher:Japan Society of Applied Physics

Abstract:A high-peak-power low-repetition-rate sub-nanosecond intracavity KTiOPO4 (KTP) optical parametric oscillator (OPO) pumped by a doubly Q-switched and mode-locked (QML) YVO4/Nd:YVO4 laser with an acousto-optic modulator (AOM) and a single-walled carbon nanotube saturable absorber (SWCNT-SA) has been demonstrated. A maximum output power of 373mW at a signal wavelength of 1570nm was obtained. The smallest pulse width, highest pulse energy, and greatest peak power of mode-locking pulses were estimated to be 119 ps, 124 μJ, and 1.04MW, respectively, under a maximum incident pump power of 8.3W and an AOM repetition rate of 2 kHz. This OPO operation paves a simple way to produce eye-safe laser sources at 1570nm with low repetition rates, small pulse widths, and high peak powers. © 2016 The Japan Society of Applied Physics.

Number of references:23

Main heading:Parametric oscillators

Controlled terms:Carbon nanotubes - Light modulators - Locks (fasteners) - Nanotubes - Optical parametric oscillators - Optical pumping - Optically pumped lasers - Photomasks - Pulse repetition rate - Pumping (laser) - Q switched lasers - Saturable absorbers - Single-walled carbon nanotubes (SWCN) - Yarn

Uncontrolled terms:Acousto-optic modulator - Dual-loss-modulated - Eye-safe lasers - Incident pump power - Low repetition rate - Maximum output power - Signal wavelength - Single-walled carbon nanotube saturable absorbers

Classification code:713.2 Oscillators - 744.1 Lasers, General - 745.1 Printing - 761 Nanotechnology - 819.4 Fiber Products

Numerical data indexing:Energy 1.24e-04J, Frequency 2.00e+03Hz, Power 1.04e+06W, Power 3.73e-01W, Power 8.30e+00W, Size 1.57e-06m, Time 1.19e-10s

DOI:10.7567/APEX.9.082701

Funding Details: Number; Acronym; Sponsor: 61308020; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 61378022; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 61475088; NSFC; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2016 Elsevier Inc.

 

Accession number:20163302717699

Title:Microwave and RF applications for micro-resonator based frequency combs

Authors:Nguyen, Thach G. (1); Shoeiby, Mehrdad (1); Ferrera, Marcello (2); Pasquazi, Alessia (3); Peccianti, Marco (3); Chu, Sai T. (4); Little, Brent E. (5); Morandotti, Roberto (6); Mitchell, Arnan (1); Moss, David J. (7)

Author affiliation:(1) Schoof of Electrical and Computer Engineering, RMIT University, Melbourne; VIC; 3001, Australia; (2) School of Engineering and Physical Sciences, Heriot-Watt University, David Brewster Building, Edinburgh; EH14 4AS, United Kingdom; (3) Department of Physics and Astronomy, University of Sussex, Falmer, Brighton; BN1 9RH, United Kingdom; (4) Department of Physics and Materials Science, City University of Hong Kong, Tat Chee Avenue, Hong Kong, Hong Kong; (5) Xi'An Institute of Optics and Precision Mechanics of CAS, Xi'an, China; (6) INSR-Énergie,Matériaux et Télécommunications, 1650 Blvd Lionel Boulet, Varennes; QC; J3X1S2, Canada; (7) Center for Micro-Photonics, Swinburne University of Technology, Melbourne; VIC, Australia

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

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:9750

Monograph title:Integrated Optics: Devices, Materials, and Technologies XX

Issue date:2016

Publication year:2016

Article number:97500H

Language:English

ISSN:0277786X

E-ISSN:1996756X

CODEN:PSISDG

ISBN-13:9781628419856

Document type:Conference article (CA)

Conference name:Integrated Optics: Devices, Materials, and Technologies XX

Conference date:February 15, 2016 - February 17, 2016

Conference location:San Francisco, CA, United states

Conference code:122980

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

Publisher:SPIE

Abstract:Photonic integrated circuits that exploit nonlinear optics in order to generate and process signals all-optically have achieved performance far superior to that possible electronically - particularly with respect to speed. We review the recent achievements based in new CMOS-compatible platforms that are better suited than SOI for