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Accession number:20180404675575

Title:Stand-off laser Raman spectroscopy and its advancement in explosives detection

Authors:Liu, Sheng-Run (1, 2); Xue, Bin (1, 2); Li, Yi-Zhe (1, 2); Wang, Hui (3)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics of Chinese Academy of Science, Xi'an, Shaanxi; 710119, China; (2) College of Materials Science and Opto-Electronic Tech, University of Chinese Academy of Science, Beijing; 101408, China; (3) Science and Technology on Near-Surface Detection Laboratory, Wuxi; 214035, China

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

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:10461

Part number:1 of 1

Issue title:AOPC 2017: Optical Spectroscopy and Imaging

Issue date:2017

Publication year:2017

Article number:1046116

Language:English

ISSN:0277786X

E-ISSN:1996756X

CODEN:PSISDG

ISBN-13:9781510614031

Document type:Conference article (CA)

Conference name:Applied Optics and Photonics China: Optical Spectroscopy and Imaging, AOPC 2017

Conference date:June 4, 2017 - June 6, 2017

Conference location:Beijing, China

Conference code:133395

Sponsor:Chinese Society for Optical Engineering; The Society of Photo-Optical Instrumentation Engineers (SPIE)

Publisher:SPIE

Abstract:The explosives detection has been a hot and difficult issue in the field of securityï1/4it is particularly important to detect explosives quickly and reliably. There are many methods to detect explosives currently, stand-off Raman spectroscopy is one of the most promising and practical technologies, this technique can be used for non-contact and nondestructive detection, ensure the safety of attendants, at the same time the precision and speed of detection are also very high and be characterized by rapid response. This paper mainly gives an account of the fundamental principle of Raman spectroscopy, as well as recount major challenges of Standoff Laser Raman Spectroscopy applied in explosives detection and corresponding solutions. From the perspective of the system, this paper sums up related theories and techniques of the excitation laser and telescopic system etc. Ultimately, a brief analysis and summary of the development trend of this technology is given. © COPYRIGHT SPIE. Downloading of the abstract is permitted for personal use only.

Number of references:19

Main heading:Explosives detection

Controlled terms:Explosives - Laser excitation - Laser spectroscopy - Raman spectroscopy

Uncontrolled terms:Advancement - Corresponding solutions - Development trends - Fundamental principles - Laser Raman spectroscopy - Nondestructive detection - Standoff - Telescopic systems

Classification code:741.3 Optical Devices and Systems - 801 Chemistry - 801.4 Physical Chemistry

DOI:10.1117/12.2285181

Funding details: Number: 6142414070114, Acronym: -, Sponsor: -;

Funding text:This work has been sponsored in part by Science and Technology on Near-Surface Detection Laboratory (No.6142414070114)

Database:Compendex

Accession number:20171703602836

Title:Heterogeneous Face Recognition: A Common Encoding Feature Discriminant Approach

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

Author affiliation:(1) Shenzhen Institutes of Advanced Technology, Chinese Academy of Science, Shenzhen; 518055, China; (2) State Key Laboratory of Transient Optics and Photonics, Center for OPTical IMagery Analysis and Learning (OPTIMAL), Xi'an Institute of Optics and Precision Mechanics, Xi'an; 710119, China; (3) School of Information Technologies, Faculty of Engineering and Information Technologies, University of Sydney, Darlington; NSW; 2008, Australia

Source title:IEEE Transactions on Image Processing

Abbreviated source title:IEEE Trans Image Process

Volume:26

Issue:5

Issue date:May 2017

Publication year:2017

Pages:2079-2089

Article number:7812744

Language:English

ISSN:10577149

CODEN:IIPRE4

Document type:Journal article (JA)

Publisher:Institute of Electrical and Electronics Engineers Inc.

Abstract:Heterogeneous face recognition is an important, yet challenging problem in face recognition community. It refers to matching a probe face image to a gallery of face images taken from alternate imaging modality. The major challenge of heterogeneous face recognition lies in the great discrepancies between different image modalities. Conventional face feature descriptors, e.g., local binary patterns, histogram of oriented gradients, and scale-invariant feature transform, are mostly designed in a handcrafted way and thus generally fail to extract the common discriminant information from the heterogeneous face images. In this paper, we propose a new feature descriptor called common encoding model for heterogeneous face recognition, which is able to capture common discriminant information, such that the large modality gap can be significantly reduced at the feature extraction stage. Specifically, we turn a face image into an encoded one with the encoding model learned from the training data, where the difference of the encoded heterogeneous face images of the same person can be minimized. Based on the encoded face images, we further develop a discriminant matching method to infer the hidden identity information of the cross-modality face images for enhanced recognition performance. The effectiveness of the proposed approach is demonstrated (on several public-domain face datasets) in two typical heterogeneous face recognition scenarios: matching NIR faces to VIS faces and matching sketches to photographs. © 1992-2012 IEEE.

Number of references:41

Main heading:Face recognition

Controlled terms:Encoding (symbols) - Image coding - Image enhancement - Signal encoding

Uncontrolled terms:Discriminant informations - Feature descriptors - Feature extraction stages - Heterogeneous face recognition - Histogram of oriented gradients - Identity information - Local binary patterns - Scale invariant feature transforms

Classification code:716.1 Information Theory and Signal Processing - 723.2 Data Processing and Image Processing

DOI:10.1109/TIP.2017.2651380

Database:Compendex

Accession number:20170903385629

Title:Meta-nanocavity model for dynamic super-resolution fluorescent imaging based on the plasmonic structure illumination microscopy method

Authors:Cao, Shun (1, 2); Wang, Taisheng (1); Sun, Qiang (1); Hu, Bingliang (1); Yu, Weixing (3)

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; 10039, 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

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

Source title:Optics Express

Abbreviated source title:Opt. Express

Volume:25

Issue:4

Issue date:February 20, 2017

Publication year:2017

Pages:3863-3874

Language:English

E-ISSN:10944087

Document type:Journal article (JA)

Publisher:OSA - The Optical Society

Abstract:Biological research requires dynamic and wide-field optical microscopy with resolution down to nanometer to study the biological process in a sub-cell or single molecular level. To address this issue, we propose a dynamic wide-field optical nanoimaging method based on a meta-nanocavity platform (MNCP) model which can be incorporated in micro/nano-fluidic systems so that the samples to be observed can be confined in a nano-scale space for the ease of imaging. It is found that this platform can support standing wave surface plasmons (SW-SPs) interference pattern with a period of 105 nm for a 532 nm incident wavelength. Furthermore, the potential application of the NCP for wide-field super-resolution imaging was discussed and the simulation results show that an imaging resolution of sub-80 nm can be achieved. © 2017 Optical Society of America.

Number of references:47

Main heading:Fluorescence imaging

Controlled terms:Nanotechnology - Optical resolving power - Plasmonics - Surface plasmons

Uncontrolled terms:Biological process - Biological research - Fluorescent imaging - Imaging resolutions - Incident wavelength - Interference patterns - Super resolution - Super resolution imaging

Classification code:741.1 Light/Optics - 761 Nanotechnology

Numerical data indexing:Size 1.05e-07m, Size 5.32e-07m

DOI:10.1364/OE.25.003863

Funding details: Number: -, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61475156, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61361166004, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 20140519002JH, Acronym: -, Sponsor: Department of Finance of Jilin Province;

Funding text:National Science Foundation of China (NSFC) (61361166004, 61475156) and Technology Department of Jilin Province (20140519002JH).

Database:Compendex

Accession number:20172303738779

Title:Wavelength-switchable passively mode-locked fiber laser with mechanically exfoliated molybdenum ditelluride on side-polished fiber

Authors:Wang, Guomei (1)

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

Corresponding author:Wang, Guomei(wangguomei@opt.cn)

Source title:Optics and Laser Technology

Abbreviated source title:Opt Laser Technol

Volume:96

Issue date:November 1, 2017

Publication year:2017

Pages:307-312

Language:English

ISSN:00303992

CODEN:OLTCAS

Document type:Journal article (JA)

Publisher:Elsevier Ltd

Abstract:We experimentally investigated the nonlinear saturable absorption characteristics of molybdenum ditelluride (MoTe<inf>2</inf>) and demonstrated a wavelength-switchable mode-locked erbium-doped fiber laser (EDFL) by using MoTe<inf>2</inf>thin film on side-polished fiber (SPF) as saturable absorber. Here, the MoTe<inf>2</inf>thin film was efficiently fabricated via mechanical exfoliation method and transferred onto the SPF with the assistance of polydimethylsiloxane (PDMS). MoTe<inf>2</inf>-covered SPF (MSPF) exhibits the nonlinear saturable absorption for pulses with different polarization states. Optical solitons with spectral bandwidth of 1.06 (1.31) nm centered at &sim;1559 (&sim;1528) nm and pulse duration of 2.46 (2.04) ps can be obtained from the EDFL by adjusting the polarization controller (PC) properly. The time-bandwidth product (TBP) of the pulses was calculated as 0.322 (0.344). © 2017 Elsevier Ltd

Number of references:59

Main heading:Mode-locked fiber lasers

Controlled terms:Bandwidth - Fiber lasers - Fibers - Molybdenum compounds - Passive mode locking - Polarization - Polydimethylsiloxane - Saturable absorbers - Semiconductor quantum wells - Silicones - Tellurium compounds - Thin films

Uncontrolled terms:Erbium doped fiber laser - Mechanical exfoliation - Molybdenum ditelluride - Passively mode-locked fiber lasers - Polarization controllers - Polydimethylsiloxane PDMS - Saturable absorption - Time-bandwidth products

Classification code:714.2 Semiconductor Devices and Integrated Circuits - 716.1 Information Theory and Signal Processing - 744.1 Lasers, General - 744.4 Solid State Lasers - 815.1.1 Organic Polymers

DOI:10.1016/j.optlastec.2017.05.030

Funding details: Number: 2015KCT-06, Acronym: -, Sponsor: -;Number: 61525505, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;

Funding text:This work was supported by the National Natural Science Foundation of China under Grant Agreements 61525505 and by the Key Scientific and Technological Innovation Team Project in Shaanxi Province (2015KCT-06).

Database:Compendex

Accession number:20174604395652

Title:Imaging through a scattering medium based on spatial transmission matrix

Authors:Zhuang, Bin (1, 2); Xu, Chengfang (1, 2); Geng, Yi (1, 2); Zhao, Guangzhi (1, 2); Zhou, Libin (3); He, Zhengquan (1); Ren, Liyong (1)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Science, China; (2) University of Chinese, Academy of Sciences, China; (3) Shaanxi University of Science and Technology, China

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

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

Volume:10416

Part number:1 of 1

Issue title:Optical Coherence Imaging Techniques and Imaging in Scattering Media II

Issue date:2017

Publication year:2017

Article number:104160D

Language:English

ISSN:16057422

ISBN-13:9781510612907

Document type:Conference article (CA)

Conference name:Optical Coherence Imaging Techniques and Imaging in Scattering Media II 2017

Conference date:June 25, 2017 - June 29, 2017

Conference location:Munich, Germany

Conference code:131573

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

Publisher:SPIE

Abstract:The inhomogeneity of scattering medium distorts the propagation of the waves, which has been detrimental to the performance of optical imaging. The operating time of the traditional solutions will be very long as the scanning is necessary during the imaging. A recovery solution based on spatial optical transmission matrix has been proposed. With the acquiring of the spatial optical transmission matrix, the incident object wave will be recovered directly from the distorted transmitted wave, in this way, only a single shot is needed during the imaging. The effectiveness of this method has been proved by the simulation and experiment, the principle is simpler and the algorithm is more efficient, which are beneficial to the imaging through the scattering medium. © 2017 SPIE.

Number of references:11

Main heading:Coherent scattering

Controlled terms:Light transmission

Uncontrolled terms:Inhomogeneities - Object waves - Operating time - Optical imaging - Optical transmission matrix - Scattering medium - Spatial transmission - Transmitted waves

Classification code:711 Electromagnetic Waves - 741.1 Light/Optics

DOI:10.1117/12.2285014

Funding details: Number: 61535015, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61275086, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;

Funding text:This work was supported by the National Natural Science Foundation of China (Grants No. 61535015 and 61275086).

Database:Compendex

Accession number:20171403544904

Title:Stochastic resonance based on modulation instability in spatiotemporal chaos

Authors:Han, Jing (1, 2); Liu, Hongjun (1, 3); 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, Chinese Academy of Sciences, Xi'an; 710119, China; (2) University of Chinese Academy of Sciences, Beijing; 100084, China; (3) Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan; 030006, China

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

Source title:Optics Express

Abbreviated source title:Opt. Express

Volume:25

Issue:7

Issue date:April 3, 2017

Publication year:2017

Pages:8306-8314

Language:English

E-ISSN:10944087

Document type:Journal article (JA)

Publisher:OSA - The Optical Society

Abstract:A novel dynamic of stochastic resonance in spatiotemporal chaos is presented, which is based on modulation instability of perturbed partially coherent wave. The noise immunity of chaos can be reinforced through this effect and used to restore the coherent signal information buried in chaotic perturbation. A theoretical model with fluctuations term is derived from the complex Ginzburg-Landau equation via Wigner transform. It shows that through weakening the nonlinear threshold and triggering energy redistribution, the coherent component dominates the instability damped by incoherent component. The spatiotemporal output showing the properties of stochastic resonance may provide a potential application of signal encryption and restoration. © 2017 Optical Society of America.

Number of references:28

Main heading:Stochastic systems

Controlled terms:Circuit resonance - Cryptography - Magnetic resonance - Modulation - Restoration - Signal reconstruction

Uncontrolled terms:Coherent components - Complex Ginzburg-Landau equation - Energy re distributions - Modulation instabilities - Non-linear thresholds - Spatiotemporal chaos - Stochastic resonances - Theoretical modeling

Classification code:701.2 Magnetism: Basic Concepts and Phenomena - 703.1 Electric Networks - 716.1 Information Theory and Signal Processing - 961 Systems Science

DOI:10.1364/OE.25.008306

Funding details: Number: 61275134, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: -, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: QNLM2016ORP0111, Acronym: QNLM, Sponsor: Qingdao National Laboratory for Marine Science and Technology;

Funding text:National Natural Science Foundation of China (NSFC) 61275134; Qingdao National Laboratory for Marine Science and Technology (QNLM2016ORP0111).

Database:Compendex

Accession number:20171603579362

Title:Two-dimensional simulation of argon dielectric barrier discharge excited by a Gaussian voltage at atmospheric pressure

Authors:Xu, Yonggang (1, 2); Wang, Jing (2); Li, Jing (2, 3); Lei, Bingying (2); Tang, Jie (2); Wang, Yishan (2); Li, Yongfang (1); Zhao, Wei (2); Duan, Yixiang (2, 4)

Author affiliation:(1) School of Physics and Information Technology, Shaanxi Normal University, Xi'an; 710119, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics of CAS, Xi'an; 710119, China; (3) Faculty of Mathematics and Physics, Huaiyin Institute of Technology, Huaian; 223003, China; (4) Research Center of Analytical Instrumentation, College of Life Sciences, Sichuan University, Chengdu; 610064, China

Corresponding author:Tang, Jie(tangjie1979@opt.ac.cn)

Source title:Physics of Plasmas

Abbreviated source title:Phys. Plasmas

Volume:24

Issue:4

Issue date:April 1, 2017

Publication year:2017

Article number:043507

Language:English

ISSN:1070664X

E-ISSN:10897674

CODEN:PHPAEN

Document type:Journal article (JA)

Publisher:American Institute of Physics Inc.

Abstract:A two-dimensional self-consistent fluid model was employed to investigate the spatiotemporal characteristics of discharges in atmospheric pressure argon (Ar) dielectric barrier discharge driven by a Gaussian voltage. The simulation results show that a discharge with multiple current pulses occurs each half-cycle in the gas gap. A transition from the Townsend mode to the glow mode is observed with the increasing applied voltage each half-cycle at a lower driving frequency (7.5 kHz). It is also found that the glow mode survives all the discharge phases at a higher driving frequency (12.5 kHz and 40 kHz). The change in the discharge mode with the driving frequency mainly lies in the fact that a lot of charged particles created in the discharge gap have no enough time to drift and diffuse around, and then these particles are assembled in the discharge space at higher frequency. Additionally, the spatial distributions of the electron density indicate that a center-advantage discharge is ignited at the driving frequencies of interest, resulting in the radial non-uniformity of discharge because of the edge effects. However, this overall non-uniformity is weakened with the driving frequency increased to 40 kHz, at which concentric ring patterns are observed. These distinct behaviors are mainly attributed to the fact that many charged particles generated are trapped in the gas gap and then accumulated to make the extension along the radial direction due to the charged particles transport and diffusion, and that the effective overlapping of a large number of avalanches induced by the increased “seed” electron density with the driving frequency. Meanwhile, the surface charged particles accumulated on the dielectric barriers are also shown to play a role in the formation of the discharge structure. © 2017 Author(s).

Number of references:58

Main heading:Dielectric materials

Controlled terms:Argon - Atmospheric pressure - Carrier concentration - Charged particles - Dielectric devices - Electron density measurement - Flow control - Glow discharges

Uncontrolled terms:Charged particles transport - Concentric ring patterns - Dielectric barrier discharges - Discharge structures - Driving frequencies - Higher frequencies - Spatiotemporal characteristics - Two-dimensional simulations

Classification code:443.1 Atmospheric Properties - 631.1 Fluid Flow, General - 701.1 Electricity: Basic Concepts and Phenomena - 708.1 Dielectric Materials - 804 Chemical Products Generally

Numerical data indexing:Frequency 1.25e+04Hz, Frequency 4.00e+04Hz, Frequency 7.50e+03Hz

DOI:10.1063/1.4979898

Funding details: Number: 2011YQ030113, Acronym: -, Sponsor: -;Number: XAB2015A08, Acronym: CAS, Sponsor: Chinese Academy of Sciences;Number: 2015JM1019, Acronym: -, Sponsor: Natural Science Foundation of Shaanxi Province;

Funding text:This work was supported by the National Major Scientific Instruments and Equipment Development Special Funds (Grant No. 2011YQ030113), the Natural Science Foundation of Shaanxi Province, China (Grant No. 2015JM1019), and the CAS ?Light of West China? Program (Grant No. XAB2015A08).

Database:Compendex

Accession number:20171303489950

Title:Nanosecond passively Q-switched Nd:YVO<inf>4</inf>laser based on WS<inf>2</inf>saturable absorber

Authors:Wang, Xi (1); Li, Lu (1); Wang, Yonggang (1, 2); Zhang, Ling (3); Wen, Qiao (4); Yang, Guowen (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (2) School of Physics and Information Technology, Shaanxi Normal University, Xi'an; 710119, China; (3) Laboratory of All-solid-state Light Sources, Institute of Semiconductors, Chinese Academy of Sciences, Beijing; 100083, China; (4) Key Laboratory of Optoelectronic Devices and Systems, Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen; 518060, China

Source title:Laser Physics

Abbreviated source title:Laser Phys.

Volume:27

Issue:4

Issue date:April 2017

Publication year:2017

Article number:045802

Language:English

ISSN:1054660X

E-ISSN:15556611

Document type:Journal article (JA)

Publisher:Institute of Physics Publishing

Abstract:We report on a nanosecond pulse generation in a diode end-pumped passively Q-switched Nd:YVO<inf>4</inf>laser using a tungsten disulfide (WS<inf>2</inf>) solution saturable absorber (SA). The WS<inf>2</inf>suspension is fabricated by the liquid-phase-exfoliated method and injected into a quartz cell for the use of SA. Compared with solid absorber, such solution absorber has the virtues of good optical transparency, high heat dissipation and long term stability. By inserting the WS<inf>2</inf>solution SA in the laser cavity, a stable Q-switched laser operation centered at 1064.45 nm wavelength is obtained with the shortest pulse duration of 788 ns and corresponding repetition rate of 333.5 kHz. The maximum average output power is registered to be 720 mW with the slope efficiency of 7.8%. To the best of our knowledge, it is the highest output power so far among pulsed lasers based on transition metal dichalcogenides (TMDs) SAs. The results demonstrate that WS<inf>2</inf>solution absorber is a promising saturable absorber for the generation of high output power pulsed lasers. © 2017 Astro Ltd Printed in the UK.

Number of references:46

Main heading:Pulsed lasers

Controlled terms:Neodymium compounds - Optical materials - Optical pumping - Pulse repetition rate - Q switched lasers - Q switching - Saturable absorbers - Single crystals - Solid state lasers - Sulfur compounds - Transition metals - Tungsten compounds

Uncontrolled terms:Average output power - Long term stability - Nanosecond pulse generation - Non-linear optical material - Optical transparency - Passively Q-switched - Slope efficiencies - Transition metal dichalcogenides

Classification code:531 Metallurgy and Metallography - 741.3 Optical Devices and Systems - 744 Lasers - 933.1 Crystalline Solids

Numerical data indexing:Frequency 3.34e+05Hz, Percentage 7.80e+00%, Power 7.20e-01W, Size 1.06e-06m, Time 7.88e-07s

DOI:10.1088/1555-6611/aa5f90

Funding details: Number: SKLST201403, Acronym: CAAS, Sponsor: Chinese Academy of Agricultural Sciences;Number: 61378024, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;

Funding text:This work is supported by National Natural Science Foundation of China under Grants 61378024 and Open Research Fund of State Key Laboratory of Transient Optics and Photonics, Chinese Academy of Science under grants SKLST201403.

Database:Compendex

Accession number:20173104014253

Title:Design and Implementation of the Intelligent Streak Camera Control System Based on Internet of Things

Authors:Lü, Bin (1, 2); Pei, Cheng-Quan (3); Tian, Jin-Shou (1); Wen, Wen-Long (1); Wang, Jun-Feng (1)

Author affiliation:(1) Key Laboratory of Ultra-fast Photoelectric Diagnostics Technology, Xi'an Institute of Optics and Precision, Xi'an; 710119, China; (2) University of Chinese Academy of Sciences, Beijing; 100049, China; (3) Key Laboratory for Physical Electronics and Devices of the Ministry of Education, Xi'an Jiaotong University, Xi'an; 710049, China

Corresponding author:Tian, Jin-Shou(tianjs@opt.ac.cn)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:46

Issue:5

Issue date:May 1, 2017

Publication year:2017

Article number:0522002

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:A distributed intelligent control system was implemented to make streak cameras more protable and intelligent, which achieved the monitoring of working parameters, precise control of the electrode voltage and scanning patterns, additionally, image acquisition and processing. Based on the structure of Internet of things and client-server model, the system realized multimachine collaboration capabilities about wired and wireless devices extension and mobile monitoring. Furthermore, an adjustable self-protection high voltage ringing choke converter was designed for the system. The power supply realized the miniaturization by the simply self-excited topological structure, and its linear adjustment accuracy can reach 1%.The picosecond visible light streak camera with the intelligent control system was calibrated by the Nd:YLF pulse laser (Wavelength of 526.5 nmand pulse width of 8 ps).A dynamic spatial resolution of 20 lp/mm (CTF=14%), a dynamic range of 234:1 and a temporal resolution of 14 ps were reached. © 2017, Science Press. All right reserved.

Number of references:12

Main heading:Distributed parameter control systems

Controlled terms:Intelligent control - Internet of things - Overcurrent protection - Streak cameras - YLF lasers

Uncontrolled terms:Adjustment accuracies - Camera control systems - Client-server models - Collaboration capabilities - Design and implementations - Distributed intelligent control - Ringing choke converters - Topological structure

Classification code:723 Computer Software, Data Handling and Applications - 731.1 Control Systems - 742.2 Photographic Equipment - 744.4.1 Semiconductor Lasers

Numerical data indexing:Percentage 1.00e+00%, Time 1.40e-11s, Time 8.00e-12s

DOI:10.3788/gzxb20174605.0522002

Funding details: Number: 11274377, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;

Funding text:The National Natural Science Foundation of China (No.11274377).

Database:Compendex

Accession number:20175104547948

Title:Medium and High Voltage IGBT Module Using Nanosilver Paste Sintering Technology and Its Performance Characterization

Authors:Mei, Yunhui (1, 2); Feng, Jingjing (1); Wang, Xiaomin (1); Lu, Guoquan (1); Zhang, Peng (3); Lin, Zhongkang (3)

Author affiliation:(1) School of Materials Science and Engineering, Tianjin University, Tianjin; 300350, 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) Global Energy Internet Research Institute, Beijing; 102200, China

Corresponding author:Mei, Yunhui(yunhui@tju.edu.cn)

Source title:Gaodianya Jishu/High Voltage Engineering

Abbreviated source title:Gaodianya Jishu

Volume:43

Issue:10

Issue date:October 31, 2017

Publication year:2017

Pages:3307-3312

Language:Chinese

ISSN:10036520

CODEN:GAJIE5

Document type:Journal article (JA)

Publisher:Science Press

Abstract:Interface contact through pressure is the way for press-pack insulated gate bipolar transistor (IGBT) modules in smart grid to conduct heat dissipation. However, the junction temperature of the press-pack IGBT modules could be too high, leading to degradation of electrical properties and even impairing the reliability, because of poor interfacial contact and poor heat dissipation. To overcome the above problems, we developed a sinter-pack IGBT module using nanosilver paste by forming electrical contact with chip to replace pressure contact in press-pack module. Then, the sinter-pack module was characterized by die-shear strength, thermal resistance, and static characteristics to compare with press-pack IGBT module. According to the experimental results, the thermal resistance of sinter-pack IGBT module decreased by 15.8%. The static electricity test results are consistent with two types of modules, further proving the feasibility of sinter-pack IGBT modules. The shear strength is around 20 MPa, indicating a good bonding quality of large area of die (13.5 mm×13.5 mm) with nanosiver paste. It is concluded that nano silver paste employed in press-pack IGBT modules can not only significantly decrease the thermal resistance of press-pack IGBT modules, but also get an excellent static electricity. Thus, a sinter-pack module is expected to be operated in smart grid because of the higher conversion efficiency, power density, and reliability during operating at high voltage and current applications. © 2017, High Voltage Engineering Editorial Department of CEPRI. All right reserved.

Number of references:25

Main heading:Insulated gate bipolar transistors (IGBT)

Controlled terms:Electric power transmission networks - Heat resistance - Presses (machine tools) - Sintering - Smart power grids - Static electricity - Thermal management (electronics)

Uncontrolled terms:Igbt-modules - Interfacial contact - Junction temperatures - Nano-silver pastes - Performance characterization - Press-pack insulated gate bipolar transistors (IGBT) - Shear tests - Static characteristic

Classification code:603.1 Machine Tools, General - 701.1 Electricity: Basic Concepts and Phenomena - 706.1 Electric Power Systems - 706.1.1 Electric Power Transmission - 714.2 Semiconductor Devices and Integrated Circuits

Numerical data indexing:Percentage 1.58e+01%, Pressure 2.00e+07Pa

DOI:10.13336/j.1003-6520.hve.20170925021

Funding details: Number: -, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;

Funding text:基金资助项目：国家高技术研究发展计划(863 计划) (2015AA034501)；国家自然科学基金(61334010)；天津市科技支撑计划(13ZCZDGX01106)；瞬态光学与光子技术国家重点实验室开放课题(SKLST201607)。 Project supported by National High-tech Research and Development Program of China (863 Program) (2015AA034501), National Natural Science Foundation of China(61334010), Key Technologies Research and Development Program of Tianjin Municipal(13ZCZDGX01106), Opening Project of Chinese State Key Laboratory of Transient Optics and Photonics (SKLST201607).

Database:Compendex

Accession number:20172603860667

Title:Roles of palladium particles in enhancing the electrochemical migration resistance of sintered nano-silver paste as a bonding material

Authors:Wang, Di (1); Mei, Yun-Hui (1, 2); Xie, Haining (3); Zhang, Kun (3); Siow, Kim S. (4); Li, Xin (1); Lu, Guo-Quan (5)

Author affiliation:(1) Key Laboratory of Advanced Ceramics and Machining Technology of Ministry of Education, Tianjin University, Tianjin; 300072, China; (2) State Key Laboratory of Transient Optics and Photonics, Chinese Academy of Sciences, Xi'an; 710119, China; (3) State Key Lab of Advanced Power Transmission Technology, Global Energy Interconnection Research Institute, Beijing; 102209, China; (4) Institute of Micro-Engineering and Nanoelectronics, Universiti Kebangsaan Malaysia, UKM, Bangi; Selangor D.E.; 43600, Malaysia; (5) Department of Materials Science and Engineering, Virginia Tech, Blacksburg; 24061, United States

Corresponding author:Mei, Yun-Hui(yunhui@tju.edu.cn)

Source title:Materials Letters

Abbreviated source title:Mater Lett

Volume:206

Issue date:November 1, 2017

Publication year:2017

Pages:1-4

Language:English

ISSN:0167577X

E-ISSN:18734979

CODEN:MLETDJ

Document type:Journal article (JA)

Publisher:Elsevier B.V.

Abstract:The inhibition effect and mechanism of adding palladium particles to nano-silver paste on the migration of silver in high temperature is reported. The electrochemical migration (ECM) tests showed that silver migration was significantly delayed by the addition of palladium. The roles of different compositions, e.g., PdO, in enhancing the ECM resistance of silver were studied experimentally. We found Ag-Pd alloy < PdO < PdO (the oxidation process of palladium). The oxidation of palladium to palladium (II) oxides (PdO) suppressed the silver oxides to delay the onset of silver dendrites formation resulting in longer failure lifetime than the pure PdO, Ag-Pd alloy or a simple combination of the two. © 2017 Elsevier B.V.

Number of references:12

Main heading:Palladium compounds

Controlled terms:Binary alloys - Electronics packaging - Nanoparticles - Palladium alloys - Silver alloys - Silver oxides - Sintering

Uncontrolled terms:Bonding materials - Electrochemical migration - Electronic Packaging - Inhibition effect - Nano-silver pastes - Oxidation process - Palladium particles - Silver migration

Classification code:547.1 Precious Metals - 761 Nanotechnology - 804 Chemical Products Generally - 933 Solid State Physics

DOI:10.1016/j.matlet.2017.06.066

Funding details: Number: 2015AA034501, Acronym: -, Sponsor: -;Number: 17JCYBJC19200, Acronym: -, Sponsor: -;Number: 61334010, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;

Funding text:This work was supported by National High Technology Research and Development Program of China (under grant 2015AA034501); the Natural Science Foundation of China (under grant 61334010); and the Science and Technology Program of Tianjin, China (under grant 17JCYBJC19200).

Database:Compendex

Accession number:20170803363283

Title:Femtowatt incoherent image conversion from mid-infrared light to near-infrared light

Authors:Huang, Nan (1); Liu, Hongjun (1, 2); Wang, Zhaolu (1); Han, Jing (1); Zhang, Shuan (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics Technology, Xi'An Institute of Optics and Precision Mechanics, Xi'an; 710119, China; (2) Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan, Shanxi; 030006, China

Source title:Laser Physics

Abbreviated source title:Laser Phys.

Volume:27

Issue:3

Issue date:March 2017

Publication year:2017

Article number:035401

Language:English

ISSN:1054660X

E-ISSN:15556611

Document type:Journal article (JA)

Publisher:Institute of Physics Publishing

Abstract:We report on the experimental conversion imaging of an incoherent continuous-wave dim source from mid-infrared light to near-infrared light with a lowest input power of 31 femtowatt (fW). Incoherent mid-infrared images of light emission from a heat lamp bulb with an adjustable power supply at window wavelengths ranging from 2.9 μm to 3.5 μm are used for upconversion. The sum-frequency generation is realized in a laser cavity with the resonant wavelength of 1064 nm pumped by an LD at 806 nm built around a periodically poled lithium niobate (PPLN) crystal. The converted infrared image in the wavelength range &sim;785 nm with a resolution of about 120 × 70 is low-noise detected using a silicon-based camera. By optimizing the system parameters, the upconversion quantum efficiency is predicted to be 28% for correctly polarized, on-axis and phase-matching light. © 2017 Astro Ltd.

Number of references:20

Main heading:Infrared devices

Controlled terms:Infrared imaging - Niobium compounds - Phase matching - Pumping (laser)

Uncontrolled terms:Experimental conversion - incoherent - Midinfrared - Near infrared light - Periodically poled lithium niobate crystals - Resonant wavelengths - Sum frequency generation - Up-conversion

Classification code:713 Electronic Circuits - 744.1 Lasers, General - 746 Imaging Techniques

Numerical data indexing:Percentage 2.80e+01%, Size 1.06e-06m, Size 2.90e-06m to 3.50e-06m, Size 8.06e-07m

DOI:10.1088/1555-6611/aa57db

Funding details: Number: 11604377, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61275134, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;

Funding text:This work was supported by the National Natural Science Foundation of China under Grant No 61275134 and 11604377.

Database:Compendex

Accession number:20163002643546

Title:Graph Regularized Non-Negative Low-Rank Matrix Factorization for Image Clustering

Authors:Li, Xuelong (1); Cui, Guosheng (1, 2); Dong, Yongsheng (1, 3)

Author affiliation:(1) 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; (2) Chinese Academy of Sciences, Beijing; 100049, China; (3) Information Engineering College, Henan University of Science and Technology, Luoyang; 471023, China

Corresponding author:Dong, Yongsheng(dongyongsheng98@163.com)

Source title:IEEE Transactions on Cybernetics

Abbreviated source title:IEEE Trans. Cybern.

Volume:47

Issue:11

Issue date:November 2017

Publication year:2017

Pages:3840-3853

Article number:7517387

Language:English

ISSN:21682267

Document type:Journal article (JA)

Publisher:Institute of Electrical and Electronics Engineers Inc.

Abstract:Non-negative matrix factorization (NMF) has been one of the most popular methods for feature learning in the field of machine learning and computer vision. Most existing works directly apply NMF on high-dimensional image datasets for computing the effective representation of the raw images. However, in fact, the common essential information of a given class of images is hidden in their low rank parts. For obtaining an effective low-rank data representation, we in this paper propose a non-negative low-rank matrix factorization (NLMF) method for image clustering. For the purpose of improving its robustness for the data in a manifold structure, we further propose a graph regularized NLMF by incorporating the manifold structure information into our proposed objective function. Finally, we develop an efficient alternating iterative algorithm to learn the low-dimensional representation of low-rank parts of images for clustering. Alternatively, we also incorporate robust principal component analysis into our proposed scheme. Experimental results on four image datasets reveal that our proposed methods outperform four representative methods. © 2013 IEEE.

Number of references:70

Main heading:Matrix algebra

Controlled terms:Factorization - Iterative methods - Learning systems - Principal component analysis

Uncontrolled terms:Data representations - graph regularization - Image clustering - Low-rank recoveries - Nonnegative matrix factorization

Classification code:921 Mathematics - 922.2 Mathematical Statistics

DOI:10.1109/TCYB.2016.2585355

Funding details: Number: -, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61125106, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61301230, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;

Funding text:This work was supported in part by the National Natural Science Foundation of China under Grant 61125106 and Grant 61301230, in part by the International Science and Technology Cooperation Project of Henan Province under Grant 162102410021, in part by the China Post-Doctoral Science Foundation under Grant 2014M550517.

Database:Compendex

Accession number:20180404671107

Title:Design of flame detection video camera system based on DSP

Authors:Liu, Wen-Long (1); Li, Yun (1); Liu, Yong-Zheng (1); Kong, Liang (1)

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

Corresponding author:Liu, Wen-Long(laoshugenlwl@126.com)

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

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:10462

Part number:1 of 1

Issue title:AOPC 2017: Optical Sensing and Imaging Technology and Applications

Issue date:2017

Publication year:2017

Article number:104621D

Language:English

ISSN:0277786X

E-ISSN:1996756X

CODEN:PSISDG

ISBN-13:9781510614055

Document type:Conference article (CA)

Conference name:Applied Optics and Photonics China: Optical Sensing and Imaging Technology and Applications, AOPC 2017

Conference date:June 4, 2017 - June 6, 2017

Conference location:Beijing, China

Conference code:133396

Sponsor:Chinese Society for Optical Engineering; The Society of Photo-Optical Instrumentation Engineers (SPIE)

Publisher:SPIE

Abstract:In order to alarm the fire and analyze the material burned, the high efficiency imaging system is designed to monitor the fire. The system selects the high performance CMOS image sensor, utilizing real-Time DSP with higher computing power, it is designed based on DSP C6748 by IIC serial port flame detectors video camera's registers, and the generated image data sent to DSP by VPIF interface, the image algorithm is transplanted to DSP, at last, the system will alarm the fire and output spectral characteristics of the burning material via Ethernet interface. This system completes algorithm hardware realization, and the algorithm can detect image in real-Time and extract the effect of spectral characteristics of burning material, so that the algorithm processing can speed up from minute level on the PC to the sub-second level. © 2017 SPIE.

Number of references:4

Main heading:Video cameras

Controlled terms:CMOS integrated circuits - Digital signal processing - Interfaces (materials)

Uncontrolled terms:Burning materials - Computing power - Ethernet interface - Flash - Hardware realization - High-performance CMOS - Image algorithms - Spectral characteristics

Classification code:714.2 Semiconductor Devices and Integrated Circuits - 716.4 Television Systems and Equipment - 951 Materials Science

DOI:10.1117/12.2283467

Database:Compendex

Accession number:20181705046999

Title:Research on implementation of an improved finite state machine model in satellite simulated system

Authors:Feng, Xu-Bin (1, 2); Su, Xiu-Qin (1, 2); Wang, Chen (1); Han, Jun-Feng (1); Yang, Yong-Qing (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:Proceedings of SPIE - The International Society for Optical Engineering

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:10605

Part number:1 of 1

Issue title:LIDAR Imaging Detection and Target Recognition 2017

Issue date:2017

Publication year:2017

Article number:106050Y

Language:English

ISSN:0277786X

E-ISSN:1996756X

CODEN:PSISDG

ISBN-13:9781510617063

Document type:Conference article (CA)

Conference name:LIDAR Imaging Detection and Target Recognition 2017

Conference date:July 23, 2017 - July 25, 2017

Conference location:Changchun, China

Conference code:133763

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

Publisher:SPIE

Abstract:Satellite simulated system is a very important sub system of satellite payload ground comprehensive testing system which tests the satellite payload's order and telemetering before delivering the payload to satellite. For all kinds of satellite simulated system, a new implementation which used an improved Finite State Machine (FSM) model can make the whole system modules clear, reduce the coupling between modules, improve the modules' reusability, enhance productivity, and make the research and development of the whole system easier. The engineering applications' experimental results show that the implementation of an improved FSM model can make the satellite simulated system stable and reliable. © 2017 SPIE.

Number of references:8

Main heading:Satellites

Controlled terms:Couplings - Finite automata - Optical radar - Reusability

Uncontrolled terms:Comprehensive testing - Engineering applications - Finite state machine model - Payload - Research and development - Satellite payloads - Simulated system - System modules

Classification code:655.2 Satellites - 716.2 Radar Systems and Equipment - 721.1 Computer Theory, Includes Formal Logic, Automata Theory, Switching Theory, Programming Theory

DOI:10.1117/12.2286412

Database:Compendex

Accession number:20175004516606

Title:Generation of Circular Optical Vortex Array

Authors:Ma, Haixiang (1); Li, Xinzhong (1, 2); Tai, Yuping (3); Li, Hehe (1); Wang, Jingge (1); Tang, Miaomiao (1); Tang, Jie (2); Wang, Yishan (2); Nie, Zhaogang (4)

Author affiliation:(1) School of Physics and Engineering, Henan University of Science and Technology, Luoyang; 471023, China; (2) State Key Laboratory of Transient Optics and Photonics, Chinese Academy of Sciences, Xi'an; 710119, China; (3) School of Chemical Engineering and Pharmaceutics, Henan University of Science and Technology, Luoyang; 471023, China; (4) School of Physics and Optoelectronic Engineering, Guangdong University of Technology, Guangzhou; 510006, China

Corresponding author:Li, Xinzhong(xzli@haust.edu.cn)

Source title:Annalen der Physik

Abbreviated source title:Ann Phys Leipzig

Volume:529

Issue:12

Issue date:December 2017

Publication year:2017

Article number:1700285

Language:English

ISSN:00033804

E-ISSN:15213889

CODEN:ANPYA2

Document type:Journal article (JA)

Publisher:Wiley-VCH Verlag

Abstract:We report on a novel optical vortex array named circular optical vortex array, which is generated by the superposition of two concentric perfect optical vortices. The circular optical vortex array has a constant topological charge of +1 or −1, the number and sign of which are determined by the topological charges of the two perfect optical vortices. Moreover, the radius of the circular optical vortex array is easily adjusted by using the cone angle of an axicon. Furthermore, the circular optical vortex array and multiple circular optical vortex array can be rotated by changing the initial phase difference of the perfect optical vortices on demand. This work demonstrates a complex structured optical field, which is of significance for applications such as optical tweezers, micro-particle manipulation, and optical imaging. © 2017 by WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

Number of references:42

Main heading:Vortex flow

Controlled terms:Optical tweezers - Topology

Uncontrolled terms:Cone angle - Micro particles - Optical field - Optical imaging - Optical manipulation - Optical vortices - Phase difference - Topological charges

Classification code:631.1 Fluid Flow, General - 744.9 Laser Applications - 921.4 Combinatorial Mathematics, Includes Graph Theory, Set Theory

DOI:10.1002/andp.201700285

Funding details: Number: 61775052, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61205086, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 11704098, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: -, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;

Funding text:This work was supported by the National Natural Science Foundation of China(NSFC) (nos. 61775052, 61205086, 11704098).

Database:Compendex

Accession number:20180704799521

Title:A sparse dictionary learning method for hyperspectral anomaly detection with capped norm

Authors:Ma, Dandan (1); Yuan, Yuan (1); Wang, Qi (2)

Author affiliation:(1) Xi'An Institute of Optics and Precision Mechanics of CAS, China; (2) School of Computer Science, Center for OPTical IMagery Analysis and Learning, Northwestern Polytechnical University, China

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

Source title:International Geoscience and Remote Sensing Symposium (IGARSS)

Abbreviated source title:Dig Int Geosci Remote Sens Symp (IGARSS)

Volume:2017-July

Part number:1 of 1

Issue title:2017 IEEE International Geoscience and Remote Sensing Symposium: International Cooperation for Global Awareness, IGARSS 2017 - Proceedings

Issue date:December 1, 2017

Publication year:2017

Pages:648-651

Article number:8127037

Language:English

CODEN:IGRSE3

ISBN-13:9781509049516

Document type:Conference article (CA)

Conference name:37th Annual IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2017

Conference date:July 23, 2017 - July 28, 2017

Conference location:Fort Worth, TX, United states

Conference code:133497

Sponsor:IEEE Geoscience and Remote Sensing Society (GRSS)

Publisher:Institute of Electrical and Electronics Engineers Inc.

Abstract:Hyperspectral anomaly detection is playing an important role in remote sensing field. Most conventional detectors based on the Reed-Xiaoli (RX) method assume the background signature obeys a Gaussian distribution. However, it is definitely hard to be satisfied in practice. Moreover, background statistics is susceptible to contamination of anomalies in the processing windows, which may lead to many false alarms and sensitiveness to the size of windows. To solve these problems, a novel sparse dictionary learning hyperspectral anomaly detection method with capped norm constraint is proposed. Contributions are claimed in threefold: 1) requiring no assumptions on the background distribution makes the method more adaptive to different scenes; 2) benefiting from the capped norm our method has a stronger distinctiveness to anomalies; and 3) it also has better adaptability to detect different sizes of anomalies without using the sliding dual window. The extensive experimental results demonstrate the desirable performance of our method. © 2017 IEEE.

Number of references:12

DOI:10.1109/IGARSS.2017.8127037

Funding details: Number: 2013CB336500, Acronym: -, Sponsor: -;Number: 60632018, Acronym: -, Sponsor: -;Number: 61232010, Acronym: -, Sponsor: -;Number: 61379094, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;

Funding text:This work was supported in part by the National Basic Research Program of China (Youth 973 Program) under Grant 2013CB336500, in part by the State Key Program of National Natural Science of China under Grant 60632018 and Grant 61232010, and in part by the National Natural Science Foundation of China under Grant 61379094.

Database:Compendex

Accession number:20174304306091

Title:Midinfrared wavelength conversion in hydrogenated amorphous silicon waveguides

Authors:Wang, Jiang (1, 2); Wang, Zhaolu (1); Huang, Nan (1); Han, Jing (1); Li, Yongfang (2); Liu, Hongjun (1)

Author affiliation:(1) Chinese Academy of Science, Xi'an Institute of Optics and Precision Mechanics, State Key Laboratory of Transient Optics and Photonics, Xi'an, China; (2) Shaanxi Normal University, School of Physics and Information Technology, Xi'an, China

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

Source title:Optical Engineering

Abbreviated source title:Opt Eng

Volume:56

Issue:10

Issue date:October 1, 2017

Publication year:2017

Article number:107103

Language:English

ISSN:00913286

E-ISSN:15602303

CODEN:OPEGAR

Document type:Journal article (JA)

Publisher:SPIE

Abstract:Midinfrared (MIR) wavelength conversion based on degenerate four-wave mixing is theoretically investigated in hydrogenated amorphous silicon (a-Si:H) waveguides. The broadband phase mismatch is achieved in the normal group-velocity dispersion regime. The conversion bandwidth is extended to 900 nm, and conversion efficiency of up to -14 dB with a pump power of 70 mW in a 2-mm long a-Si:H rib waveguides is obtained. This low-power on-chip wavelength converter will have potential for application in a wide range of MIR nonlinear optic devices. © 2017 Society of Photo-Optical Instrumentation Engineers (SPIE).

Number of references:33

Main heading:Amorphous silicon

Controlled terms:Four wave mixing - Group velocity dispersion - Hydrogenation - Nonlinear optics - Waveguides

Uncontrolled terms:Degenerate four wave mixing - Hydrogenated amorphous silicon (a-Si:H) - Mid-infrared wavelengths - Midinfrared - Phase mismatch - Pump power - Rib waveguides - Wavelength converter

Classification code:549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals - 714.3 Waveguides - 741.1.1 Nonlinear Optics - 802.2 Chemical Reactions

Numerical data indexing:Decibel -1.40e+01dB, Power 7.00e-02W, Size 2.00e-03m, Size 9.00e-07m

DOI:10.1117/1.OE.56.10.107103

Funding details: Number: XAB2015B27, Acronym: -, Sponsor: -;Number: 2016JQ6036, Acronym: -, Sponsor: Natural Science Foundation of Shaanxi Province;Number: -, Acronym: CAS, Sponsor: Chinese Academy of Sciences;Number: 61505247, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 11604377, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61275134, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: QNLM2016ORP0111, Acronym: QUST, Sponsor: Qingdao University of Science and Technology;

Funding text:This work was jointly supported by the National Natural Science Foundation of China under Grant Nos. (61505247, 11604377, and 61275134), the Qingdao National Laboratory for Marine Science and Technology (No. QNLM2016ORP0111), the CAS "Light of West China" Program (No. XAB2015B27), and the Natural Science Basic Research plan in Shaanxi Province of China (No. 2016JQ6036).

Database:Compendex

Accession number:20173804169245

Title:Research on video scene mapping of fixed viewing angle

Authors:Wang, Yihao (1); Liu, Jiahang (1); Shi, Liu (1)

Author affiliation:(1) Remote Sensing Centre, Xi'An Institute of Optics and Precision Mechanics of CAS, China

Source title:2017 2nd International Conference on Image, Vision and Computing, ICIVC 2017

Abbreviated source title:Int. Conf. Image, Vis. Comput., ICIVC

Part number:1 of 1

Issue title:2017 2nd International Conference on Image, Vision and Computing, ICIVC 2017

Issue date:July 18, 2017

Publication year:2017

Pages:463-467

Article number:7984599

Language:English

ISBN-13:9781509062379

Document type:Conference article (CA)

Conference name:2nd International Conference on Image, Vision and Computing, ICIVC 2017

Conference date:June 2, 2017 - June 4, 2017

Conference location:Chengdu, China

Conference code:129351

Publisher:Institute of Electrical and Electronics Engineers Inc.

Abstract:Mapping special images in video scene has practical important applications in the fields of advertising and television production, while there have been few reports on how to map in the background of video scene without impacting foreground targets which makes the result more realistic. We propose a method to embed images on certain location in video scene of fixed viewing angle. We first build background model from video frames, extract foreground using background subtraction method, then calibrate the camera using intrinsic information from video. On this basis we establish mapping matrices of image coordinate to world coordinate and image coordinate to video image coordinate according to location and orientation parameters. By using mapping matrices we embed the images on the background of video scene in right posture, and reproduce the foreground objects. Experiments in different scenes show that the proposed method is easily to use which makes mapping realistic and without impacting foreground objects, and has a good practicability. © 2017 IEEE.

Number of references:19

Main heading:Mapping

Controlled terms:Cameras - Matrix algebra - Television applications

Uncontrolled terms:Background subtraction method - Camera self calibration - Foreground extraction - Foreground objects - Image coordinates - Orientation parameter - Video scene - World coordinates

Classification code:405.3 Surveying - 716.4 Television Systems and Equipment - 742.2 Photographic Equipment - 921.1 Algebra

DOI:10.1109/ICIVC.2017.7984599

Database:Compendex

Accession number:20180304654536

Title:Lunar-edge based on-orbit modulation transfer function (MTF) measurement

Authors:Cheng, Ying (1, 2); Yi, Hongwei (1); Liu, Xinlong (1)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, No.17, Xinxi Road, Xi'an; 710119, China; (2) University of Chinese, Academy of Sciences, Jingjia Road, Beijing; 100049, China

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

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:10463

Part number:1 of 1

Issue title:AOPC 2017: Space Optics and Earth Imaging and Space Navigation

Issue date:2017

Publication year:2017

Article number:104631U

Language:English

ISSN:0277786X

E-ISSN:1996756X

CODEN:PSISDG

ISBN-13:9781510614079

Document type:Conference article (CA)

Conference name:Applied Optics and Photonics China: Space Optics and Earth Imaging and Space Navigation, AOPC 2017

Conference date:June 4, 2017 - June 6, 2017

Conference location:Beijing, China

Conference code:133232

Sponsor:Chinese Society for Optical Engineering; The Society of Photo-Optical Instrumentation Engineers (SPIE)

Publisher:SPIE

Abstract:Modulation transfer function (MTF) is an important parameter for image quality evaluation of on-orbit optical image systems. Various methods have been proposed to determine the MTF of an imaging system which are based on images containing point, pulse and edge features. In this paper, the edge of the moon can be used as a high contrast target to measure on-orbit MTF of image systems based on knife-edge methods. The proposed method is an extension of the ISO 12233 Slanted-edge Spatial Frequency Response test, except that the shape of the edge is a circular arc instead of a straight line. In order to get more accurate edge locations and then obtain a more authentic edge spread function (ESF), we choose circular fitting method based on least square to fit lunar edge in sub-pixel edge detection process. At last, simulation results show that the MTF value at Nyquist frequency calculated using our lunar edge method is reliable and accurate with error less than 2% comparing with theoretical MTF value. © 2017 SPIE.

Number of references:25

Main heading:Orbits

Controlled terms:Earth (planet) - Edge detection - Frequency response - Geometrical optics - Least squares approximations - Modulation - Moon - Optical transfer function - Pixels - Transfer functions

Uncontrolled terms:Edge spread function - Image quality evaluation - lunar-edge - Modulation transfer function (MTF) - Modulation transfer function measurements - On orbit - Spatial frequency response - Subpixel edge detection

Classification code:657.2 Extraterrestrial Physics and Stellar Phenomena - 741.1 Light/Optics - 921 Mathematics - 921.6 Numerical Methods

Numerical data indexing:Percentage 2.00e+00%

DOI:10.1117/12.2285836

Database:Compendex

Accession number:20180404671055

Title:Hyperspectral anomaly detection based on machine learning and building selection graph

Authors:Tang, Yehui (1); Qin, Hanlin (1); Liang, Ying (1); Leng, Hanbing (2); Ju, Zezhao (1)

Author affiliation:(1) School of Physics and Optoelectronic Engineering, Xidian University, Xi'an; 710071, China; (2) Xi'an Institute of Optics and Precision Mechanics of CAS, Xi'an; 710119, China

Corresponding author:Qin, Hanlin

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

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:10462

Part number:1 of 1

Issue title:AOPC 2017: Optical Sensing and Imaging Technology and Applications

Issue date:2017

Publication year:2017

Article number:104625B

Language:English

ISSN:0277786X

E-ISSN:1996756X

CODEN:PSISDG

ISBN-13:9781510614055

Document type:Conference article (CA)

Conference name:Applied Optics and Photonics China: Optical Sensing and Imaging Technology and Applications, AOPC 2017

Conference date:June 4, 2017 - June 6, 2017

Conference location:Beijing, China

Conference code:133396

Sponsor:Chinese Society for Optical Engineering; The Society of Photo-Optical Instrumentation Engineers (SPIE)

Publisher:SPIE

Abstract:In hyperspectral images, anomaly detection without prior information develops rapidly. Most of the existing methods are based on restrictive assumptions of the background distribution. However, the complexity of the environment makes it hard to meet the assumptions, and it is difficult for a pre-set data model to adapt to a variety of environments. To solve the problem, this paper proposes an anomaly detection method on the foundation of machine learning and graph theory. First, the attributes of vertexes in the graph are set by the reconstruct errors. And then, robust background endmember dictionary and abundance matrix are received by structured sparse representation algorithm. Second, the Euler distances between pixels in lower-dimension are regarded as edge weights in the graph, after the analysis of the low dimensional manifold structure among the hyperspectral data, which is in virtue of manifold learning method. Finally, anomaly pixels are picked up by both vertex attributes and edge weights. The proposed method has higher probability of detection and lower probability of false alarm, which is verified by experiments on real images. © 2017 SPIE.

Number of references:14

Main heading:Graph theory

Controlled terms:Artificial intelligence - Hyperspectral imaging - Independent component analysis - Learning systems - Pixels - Spectroscopy

Uncontrolled terms:Anomaly detection - Anomaly detection methods - Hyperspectral anomaly detection - Low-dimensional manifolds - Lower probabilities - Manifold learning - Probability of detection - Structured sparse representations

Classification code:723.4 Artificial Intelligence - 921.4 Combinatorial Mathematics, Includes Graph Theory, Set Theory

DOI:10.1117/12.2285780

Funding details: Number: 2017JM6079, Acronym: -, Sponsor: Natural Science Foundation of Shaanxi Provincial Department of Education;Number: 614102033306, Acronym: -, Sponsor: Ministry of Education;Number: LSIT201503, Acronym: CAS, Sponsor: Chinese Academy of Sciences;Number: 61401343, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;

Funding text:This work is co-supported by the National Natural Science Foundation of China (61401343), the Joint Funds for the Ministry of Education (614102033306), the National Natural Science Foundation of Shaanxi Provincial (2017JM6079), the Open Research Fund of Key Laboratory of Spectral Imaging Technology, Chinese Academy of Sciences (LSIT201503).

Database:Compendex

Accession number:20180304653285

Title:Distinguishing the number of captured microspheres in dual-beam optical trap by measuring the back light signal

Authors:Zhou, Deyuan (1); Chen, Xinlin (1); Xiao, Guangzong (1, 2); Han, Xiang (1); Jin, Shilong (1)

Author affiliation:(1) College of Optoelectronic Science and Engineering, National University of Defense Technology, Changsha; 410073, China; (2) State Key Laboratory of Transient Optics and Photonic, Chinese Academy of Sciences, Xian; 710068, China

Corresponding author:Xiao, Guangzong(xiaoguangzong@nudt.edu.cn)

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

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:10460

Part number:1 of 1

Issue title:AOPC 2017: Optoelectronics and Micro/Nano-Optics

Issue date:2017

Publication year:2017

Article number:104601B

Language:English

ISSN:0277786X

E-ISSN:1996756X

CODEN:PSISDG

ISBN-13:9781510614017

Document type:Conference article (CA)

Conference name:Applied Optics and Photonics China: Optoelectronics and Micro/Nano-Optics, AOPC 2017

Conference date:June 4, 2017 - June 6, 2017

Conference location:Beijing, China

Conference code:133231

Sponsor:Chinese Society for Optical Engineering; The Society of Photo-Optical Instrumentation Engineers (SPIE)

Publisher:SPIE

Abstract:Optical traps have been widely used in a large variety of applications ranging from biophysics to nano-sciences. More than one microscopic object can be captured in an optical trap. In the practical application, it is always necessary to distinguish and control the number of captured objects in the optical trap. In this paper, a novel method has been presented to distinguish the number of trapped microspheres by measuring the intensity of back signal. Clear descent of the back signal has been observed when a microsphere is captured in the center of optical trap. The relative coupling efficiency of back signal decreases as the number of captured microspheres increases both in experiment and theory. This method contributes to miniaturization and integration of applied systems due to getting rid of the imaging system, and is generally applicable to the area of nanoparticle trapping. © 2017 SPIE.

Number of references:13

Main heading:Optical fiber coupling

Controlled terms:Efficiency - Fiber optics - Microspheres

Uncontrolled terms:Coupling efficiency - Dual beam - Light signal - Microscopic objects - Microspheres increase - Nano-particle trapping - Optical manipulation - Optical trap

Classification code:741.1.2 Fiber Optics - 913.1 Production Engineering

DOI:10.1117/12.2284995

Funding details: Number: SKLST201507, Acronym: -, Sponsor: -;Number: -, Acronym: CAS, Sponsor: Chinese Academy of Sciences;Number: 2017JJ3363, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;

Funding text:This work was supported by the Hunan Provincial Natural Science Foundation of China (2017JJ3363) and by the Open Research Fund (SKLST201507) of State Key Laboratory of Transient Optics and Photonics, Chinese Academy of Sciences.

Database:Compendex

Accession number:20180104607021

Title:Temporal imaging based on four-wave mixing in slow-light photonic crystal waveguide

Authors:Zhou, Mingyang (1); Liu, Hongjun (1, 2); Wang, Zhaolu (1); Huang, Nan (1); Han, Jing (1)

Source title:Journal of Optics (United Kingdom)

Abbreviated source title:J. Opt.

Volume:19

Issue:12

Issue date:December 2017

Publication year:2017

Article number:125502

Language:English

ISSN:20408978

E-ISSN:20408986

Document type:Journal article (JA)

Publisher:Institute of Physics Publishing

Abstract:We have proposed a temporal imaging system based on four-wave mixing (FWM) in the dispersion engineered slow-light photonic crystal waveguide (PCW). Dispersion relations of the modified PCW are calculated through the 3D plane wave expansion method. Time lens is demonstrated by solving the couple-mode equations describing the FWM process inside the PCW directly. Intensity and phase evolutions of the signal, pump and idler waves during the FWM process are calculated to investigate temporal imaging. Meanwhile, temporal magnifications with different magnification factors are realized by tuning the total dispersion of the input signals. Furthermore, influences of dispersion and free-carrier effects inside PCW on the temporal imaging performance are analyzed. The simulation results show the capability to realize temporal imaging system based on the FWM process in slow-light engineered PCW. © 2017 IOP Publishing Ltd.

Number of references:23

Main heading:Slow light

Controlled terms:Dispersion (waves) - Four wave mixing - Image processing - Imaging systems - Optical systems - Optical waveguides - Photonic crystals - Waveguide components

Uncontrolled terms:Couple mode equation - Dispersion relations - Four Wave Mixing (FWM) - Free-carrier effects - Magnification factors - Photonic crystal waveguide - Temporal imaging - Temporal imaging systems

Classification code:714.3 Waveguides - 741.1 Light/Optics - 741.3 Optical Devices and Systems - 746 Imaging Techniques

DOI:10.1088/2040-8986/aa9138

Funding details: Number: 2016JQ6036, Acronym: -, Sponsor: Natural Science Foundation of Shaanxi Province;Number: No.XAB2015B27, Acronym: -, Sponsor: -;Number: -, Acronym: CAS, Sponsor: Chinese Academy of Sciences;Number: No.QNLM2016ORP0111, Acronym: QNLM, Sponsor: Qingdao National Laboratory for Marine Science and Technology;Number: 61505247, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 11604377, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61275134, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;

Funding text:This work was partially funded by the National Natural Science Foundation of China grant (Nos. 61505247, 11604377, and 61275134), Qingdao National Laboratory for Marine Science and Technology (No.QNLM2016ORP0111), CAS ‘Light of west China’ Program (No.XAB2015B27), and Natural Science Basic Research plan in Shaanxi Province of China (No.2016JQ6036).

Database:Compendex

Accession number:20174804481824

Title:Hierarchical recurrent neural network for video summarization

Authors:Zhao, Bin (1); Li, Xuelong (2); Lu, Xiaoqiang (2)

Author affiliation:(1) School of Computer Science, Center for OPTical IMagery Analysis and Learning (OPTIMAL), Northwestern Polytechnical University, Xi'an, Shaanxi; 710072, China; (2) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, Shaanxi; 710019, China

Source title:MM 2017 - Proceedings of the 2017 ACM Multimedia Conference

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

Part number:1 of 1

Issue title:MM 2017 - Proceedings of the 2017 ACM Multimedia Conference

Issue date:October 23, 2017

Publication year:2017

Pages:863-871

Language:English

ISBN-13:9781450349062

Document type:Conference article (CA)

Conference name:25th ACM International Conference on Multimedia, MM 2017

Conference date:October 23, 2017 - October 27, 2017

Conference location:Mountain View, CA, United states

Conference code:131373

Sponsor:ACM SIGMM

Publisher:Association for Computing Machinery, Inc

Abstract:Exploiting the temporal dependency among video frames or subshots is very important for the task of video summarization. Practically, RNN is good at temporal dependency modeling, and has achieved overwhelming performance in many video-based tasks, such as video captioning and classification. However, RNN is not capable enough to handle the video summarization task, since traditional RNNs, including LSTM, can only deal with short videos, while the videos in the summarization task are usually in longer duration. To address this problem, we propose a hierarchical recurrent neural network for video summarization, called H-RNN in this paper. Specifically, it has two layers, where the first layer is utilized to encode short video subshots cut from the original video, and the final hidden state of each subshot is input to the second layer for calculating its confidence to be a key subshot. Compared to traditional RNNs, H-RNN is more suitable to video summarization, since it can exploit long temporal dependency among frames, meanwhile, the computation operations are significantly lessened. The results on two popular datasets, including the Combined dataset and VTW dataset, have demonstrated that the proposed H-RNN outperforms the state-of-the-arts. © 2017 ACM.

Number of references:38

Main heading:Long short-term memory

Controlled terms:Deep learning - Video recording

Uncontrolled terms:Dependency model - Hidden state - Original videos - Second layer - State of the art - Sub-shot - Video frame - Video summarization

Classification code:716.4 Television Systems and Equipment

DOI:10.1145/3123266.3123328

Database:Compendex

Accession number:20171503569200

Title:Window function optimization in atmospheric wind velocity retrieval with doppler difference interference spectrometer

Authors:Chen, Jiejing (1, 2); Feng, Yutao (1); Hu, Bingliang (1); Li, Juan (1); Sun, Jian (1); Hao, Xiongbo (1); Bai, Qinglan (1)

Author affiliation:(1) Key Laboratory of Spectral Imaging Technology of the Chinese Academy of Sciences, 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

Corresponding author:Feng, Yutao(fytciom@opt.ac.cn)

Source title:Guangxue Xuebao/Acta Optica Sinica

Abbreviated source title:Guangxue Xuebao

Volume:37

Issue:2

Issue date:February 10, 2017

Publication year:2017

Article number:0207002

Language:Chinese

ISSN:02532239

CODEN:GUXUDC

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:Doppler difference interference spectrometer is a kind of Fourier transform spectrometer. In the process of atmospheric wind velocity retrieval, even-prolongated recovered spectrum cannot work out the phase information of the target spectral line directly. Meanwhile, there are stray spectral lines and noises in the recovered spectrum, which make the phase of the interferogram changed and the retrieved wind velocity deviated. Therefore, isolation of the target spectral line is necessary in the process of getting the phase information of the recovered spectrum in actual noisy environment. For interferograms with different signal noise ratios the retrieved wind velocities (SNR) optimized by different window functions with different line widths are analyzed by Monte-Carlo method. The results indicate that the Gaussian window function with line width equaling 4 to 5 times of the spectral resolution provides the best performance if the SNR of the measured interferogram is higher than 26.5 dB, and rectangular window function with line width equaling 7 to 12 times-of the spectral resolution provides the best performance if the SNR of the measured interferogram is lower than 26.5 dB. The phase information and the approximative atmospheric wind velocity can be retrieved. © 2017, Chinese Lasers Press. All right reserved.

Number of references:13

Page count:7

Main heading:Monte Carlo methods

Controlled terms:Data handling - Fourier transform infrared spectroscopy - Interferometry - Recovery - Signal processing - Signal to noise ratio - Spectral resolution - Spectrometers - Velocity - Wind

Uncontrolled terms:Atmospheric Winds - Fourier transform spectrometers - Interference spectrometer - Noisy environment - Phase information - Rectangular windows - Signal-noise ratio - Spectral data

Classification code:443.1 Atmospheric Properties - 716.1 Information Theory and Signal Processing - 723.2 Data Processing and Image Processing - 741.1 Light/Optics - 741.3 Optical Devices and Systems - 801 Chemistry - 922.2 Mathematical Statistics - 941.4 Optical Variables Measurements

Numerical data indexing:Decibel 2.65e+01dB

DOI:10.3788/AOS201737.0207002

Database:Compendex

Accession number:20172203715584

Title:Centric baffle design of partial field optical system

Authors:Wang, Chenchen (1, 2); Zou, Gangyi (1, 2); Li, Ruichang (1, 2); Fan, Xuewu (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:Fan, Xuewu(anxuewu@opt.ac.cn)

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

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

Volume:46

Issue:3

Issue date:March 25, 2017

Publication year:2017

Article number:0318002

Language:Chinese

ISSN:10072276

Document type:Journal article (JA)

Publisher:Chinese Society of Astronautics

Abstract:A partial field optical system baffle was designed and optimized. Partial field was non-symmetry along one direction, so a large number light tracing was needed to design the centric, which made it difficult to design. A method of footprint diagram was used to get the coordinate of special light in the space, the size of effective field and the part of baffle blocking light. The part blocking light was removed and a "duck mouth shaped" baffle was got, which can decrease the difficulty of design. By optimizing the design, length of final designed baffle was half of the former one, and reduced the size along Y direction, which can reduce more stray light to enter the later optical system directly. Baffle was modeled and simulated by Solidworks and TracePro software, the PST is about 10-9when the off-axis angle is 30°, which is less than 5.59×10-7, the requirement of the system. The result of the simulation shows that using method of footprint diagram to design inner baffle of a partial field optical system is feasible. © 2017, Editorial Board of Journal of Infrared and Laser Engineering. All right reserved.

Number of references:14

Main heading:Optical systems

Controlled terms:Design - Stray light

Uncontrolled terms:Centric baffle - Effective field - Non symmetries - Off-axis angles - Partial field - SolidWorks - TracePro

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

DOI:10.3788/IRLA201746.0318002

Database:Compendex

Accession number:20173504103022

Title:Histogram-based human segmentation technique for infrared images

Authors:Wu, Di (1, 2); Zhou, Zuofeng (1); Yang, Hongtao (1); Cao, Jianzhong (1)

Author affiliation:(1) 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:Wu, Di(wudi@opt.cn)

Source title:Advances in Intelligent Systems and Computing

Abbreviated source title:Adv. Intell. Sys. Comput.

Volume:555

Part number:1 of 1

Issue title:Recent Developments in Intelligent Computing, Communication and Devices - Proceedings of ICCD 2016

Issue date:2017

Publication year:2017

Pages:129-132

Language:English

ISSN:21945357

ISBN-13:9789811037788

Document type:Conference article (CA)

Conference name:2nd International Conference on Intelligent Computing, Communication and Devices, ICCD 2016

Conference date:August 13, 2016 - August 14, 2016

Conference location:Bhubaneswar, India

Conference code:196339

Publisher:Springer Verlag

Abstract:Human detection in infrared video surveillance system is a challenging issue of computer vision. Effective human segmentation plays an important role in human detection. However, occlusion between different people makes it difficult to segment human groups. In this paper, we propose a new method for infrared human segmentation based on the histogram information. After selecting regions of interest with background subtraction, each connected human region is separated into single ones by analyzing histogram trend and calculating peak number. Experiment results show the accuracy of our method. © 2017, Springer Nature Singapore Pte Ltd.

Number of references:7

Main heading:Image segmentation

Controlled terms:Graphic methods - Infrared imaging - Intelligent computing - Security systems

Uncontrolled terms:Background subtraction - Histogram - Histogram information - Human detection - Human segmentation - Infrared video - Regions of interest

Classification code:723.4 Artificial Intelligence - 746 Imaging Techniques - 914.1 Accidents and Accident Prevention

DOI:10.1007/978-981-10-3779-5_16

Database:Compendex

Accession number:20175104560103

Title:Test Method of Angle Error of Limited Rotation Axis System

Authors:Tian, Liu-De (1, 2); Zhao, Jian-Ke (1); Zhou, Yan (1); Wang, Tao (1); Zhao, Huai-Xue (1); Pan, Liang (1); Liu, Zhao-Hui (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:Liu, Zhao-Hui(lzh@opt.ac.cn)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:46

Issue:11

Issue date:November 1, 2017

Publication year:2017

Article number:1112005

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:In order to improve the measurement accuracy of the angular error in the limited rotation axis system, the principle and method of measuring the angular error by autocollimation theodolite was used to analysis the error sources which affect the measurement result, the simulation results show that the tilt angle of the axis of the measured shaft is the main error source. Based on the accurate error model, the method to identify the misadjustment parameters and separate the introduced error by using the least squares estimation was proposed to realize the high precision measurement of angle error. The experiment was carried out with the accuracy of 2″ single-axis position turntable as tested object. The test results of conventional methods are -309.1″~428.6″, the test error is large, however, the test results of the proposed method are -0.89″~1.01″ and -1.01″~0.93″, the test error is 0.70″ and 0.78″, eliminating the test error introduced by equipment misadjustment. The method has the advantages of simple equipment and simple operation, and can realize the high precision measurement the angle error of the limited rotation axis system, can solve the problem of limited rotation axis systemengineering testing problem. © 2017, Science Press. All right reserved.

Number of references:22

Main heading:Least squares approximations

Controlled terms:Angle measurement - Errors - Measurement - Rotation

Uncontrolled terms:Conventional methods - Coodinate transformation - Error model - High-precision measurement - Least squares estimation - Measurement accuracy - Rotation axis - Testing method

Classification code:921.6 Numerical Methods - 931.1 Mechanics - 943.2 Mechanical Variables Measurements

DOI:10.3788/gzxb20174611.1112005

Database:Compendex

Accession number:20174904513944

Title:Regularized class-specific subspace classifier

Authors:Zhang, Rui (1); Nie, Feiping (1); Li, Xuelong (2)

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

Corresponding author:Nie, Feiping(feipingnie@gmail.com)

Source title:IEEE Transactions on Neural Networks and Learning Systems

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

Volume:28

Issue:11

Issue date:November 2017

Publication year:2017

Pages:2738-2747

Article number:7556299

Language:English

ISSN:2162237X

E-ISSN:21622388

Document type:Journal article (JA)

Publisher:Institute of Electrical and Electronics Engineers Inc.

Abstract:In this paper, we mainly focus on how to achieve the translated subspace representation for each class, which could simultaneously indicate the distribution of the associated class and the differences from its complementary classes. By virtue of the reconstruction problem, the class-specific subspace classifier (CSSC) problem could be represented as a series of biobjective optimization problems, which minimize and maximize the reconstruction errors of the related class and its complementary classes, respectively. Besides, the regularization term is specifically introduced to ensure the whole system's stability. Accordingly, a regularized class-specific subspace classifier (RCSSC) method can be further proposed based on solving a general quadratic ratio problem. The proposed RCSSC method consistently converges to the global optimal subspace and translation under the variations of the regularization parameter. Furthermore, the proposed RCSSC method could be extended to the unregularized case, which is known as unregularized CSSC (UCSSC) method via orthogonal decomposition technique. As a result, the effectiveness and the superiority of both proposed RCSSC and UCSSC methods can be verified analytically and experimentally. © 2016 IEEE.

Number of references:32

Main heading:Concrete beams and girders

Controlled terms:Artificial intelligence - Computer networks - Translation (languages)

Uncontrolled terms:Bi-objective optimization - Class-specific subspace - Orthogonal decomposition techniques - Ratio problem - Reconstruction problems - Regularization parameters - Regularization terms - Subspace representation

Classification code:412 Concrete - 723.4 Artificial Intelligence - 903.1 Information Sources and Analysis

DOI:10.1109/TNNLS.2016.2598744

Funding details: Number: -, Acronym: NPU, Sponsor: Northwestern Polytechnical University;Number: 3102015BJ(II)JJZ01, Acronym: -, Sponsor: -;

Funding text:Manuscript received January 25, 2016; revised May 25, 2016 and August 3, 2016; accepted August 4, 2016. Date of publication August 30, 2016; date of current version October 16, 2017. This work was supported by the Fundamental Research Funds for the Central Universities under Grant 3102015BJ(II)JJZ01. (Corresponding author: Feiping Nie.) R. Zhang and F. Nie are with School of Computer Science and Center for OPTical IMagery Analysis and Learning (OPTIMAL), Northwestern Polytechnical University, Xi’an 710072, Shaanxi, P. R. China (e-mail: ruizhang8633@gmail.com; feipingnie@gmail.com).

Database:Compendex

Accession number:20173003967991

Title:Nonlinear Interference Spectrum Data Reconstruction Algorithm for Image Plane Interference

Authors:Zhang, Zhinan (1); Li, Libo (1); Hu, Bingliang (1); Chen, Jiejing (1, 2); Gao, Xiaohui (1, 2); Yang, Fanchao (1)

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

Corresponding author:Hu, Bingliang(249771538@qq.com)

Source title:Guangxue Xuebao/Acta Optica Sinica

Abbreviated source title:Guangxue Xuebao

Volume:37

Issue:6

Issue date:June 10, 2017

Publication year:2017

Article number:0630002

Language:Chinese

ISSN:02532239

CODEN:GUXUDC

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:The static Michelson interferometer is an entity type image plane interferometer, which can solve the technical difficulty of large field of view of interferometer. In the sampling process, nonlinear interference error is introduced by the interferometer, which leads to a consequence that the spectrum cannot be recovered accurately, so the nonlinear interference error needs to be corrected. A theoretical model of nonlinear interference error is analyzed, a nonlinear interference spectrum data reconstruction algorithm is presented, and a simulation is carried out. The simulation results indicate that the target spectrum can be recovered successfully by the reconstruction algorithm with numerical fitting, and the nonlinear interference error is eliminated. The reconstruction algorithm using Cauchy dispersion formula fitting is more precise than the reconstruction algorithm using linear fitting, and the relative error between the recovery spectrum and the input spectrum is less than 0.7% at the absorption peak. © 2017, Chinese Lasers Press. All right reserved.

Number of references:14

Main heading:Absorption spectroscopy

Controlled terms:Errors - Image reconstruction - Michelson interferometers - Recovery - Spectroscopy

Uncontrolled terms:Cauchy dispersion formula - Image plane - Interference spectrum - Large field of views - Reconstruction algorithms - Spectrum recoveries - Technical difficulties - Theoretical modeling

Classification code:941.3 Optical Instruments

Numerical data indexing:Percentage 7.00e-01%

DOI:10.3788/AOS201737.0630002

Database:Compendex

Accession number:20181004855823

Title:Research on Mural Painting Appreciatione Based on Spectral Imaging and Spectral Analysis

Authors:Xu, Wen-Zhong (1); Tang, Xing-Jia (2); Zhang, Geng (2); Yang, Fan-Chao (2); Huang, Xin (2); Li, Xia (2); Liu, Dai-Yun (3); Zhao, Xi-Chen (3)

Author affiliation:(1) Shaanxi History Museum, Xi'an; 710000, China; (2) Xi' an Institute of Optics and Precision Mechanics of Chinese Academy of Sciences, Xi'an; 710119, China; (3) Shaanxi Archaeological Institute, Xi'an; 710000, China

Corresponding author:Tang, Xing-Jia(tang-xingjia@163.com)

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

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

Volume:37

Issue:10

Issue date:October 1, 2017

Publication year:2017

Pages:3235-3241

Language:Chinese

ISSN:10000593

CODEN:GYGFED

Document type:Journal article (JA)

Publisher:Science Press

Abstract:For the technology requirements of appreciating mural paintings, according to the advantages of spectral imaging and spectral analysis, the usages of spectral imaging in appreciating mural paintings were discussed, which could improve the traditional expert experience identification method by providing more information in the appreciation and assessment. Spectral method is an important scientific analysis method with many characteristics, like non-contact, lossless, scientific, accurate and quantifiable, which can be used to appreciate mural paintings. Firstly, the application was analyzed from different functions. Secondly, the measurements of mural paintings in HAN XIU tomb were processed by spectral analysis, primary component analysis, independent component analysis, relevance judgment and interactive processing, which were for proving the real affection of the theory analysis. At last, based on the experiments, some key technologies were summarized, for example, normalized measurements, analysis of characters of image and spectral data, processer of image and spectral data. The experiment results showed that the spectral imaging and analysis were useful for the recognition of pigment, the extraction of hidden information, the enhancement of weak information, and the classification and recognition of different properties. Meanwhile, some exploratory works can be unfolded, like modified child analysis, repairing of paintings (such as repairing mural paintings in HAN XIU tomb). © 2017, Peking University Press. All right reserved.

Number of references:10

Main heading:Image processing

Controlled terms:Classification (of information) - Independent component analysis - Painting - Processing - Repair - Spectroscopy - Spectrum analysis

Uncontrolled terms:Classification and recognition - Hidden information - Identification method - Mural paintings - Primary component analysis - Relevance judgment - Scientific analysis - Spectral imaging

Classification code:716.1 Information Theory and Signal Processing - 813.1 Coating Techniques - 913.4 Manufacturing - 913.5 Maintenance

DOI:10.3964/j.issn.1000-0593(2017)10-3235-07

Database:Compendex

Accession number:20181104898703

Title:A Spiral-Maneuver Control Method for a Fixed-Trim Warhead

Authors:Zhou, Min (1); Zhou, Jun (1); Lu, Ming-Fei (2)

Author affiliation:(1) Institute of Precision Guidance and Control, Northwestern Polytechnical University, Xi'an; 710072, China; (2) Xi'an Institute of Applied Optics, Xi'an; 710065, China

Source title:Yuhang Xuebao/Journal of Astronautics

Abbreviated source title:Yuhang Xuebao

Volume:38

Issue:11

Issue date:November 30, 2017

Publication year:2017

Pages:1195-1203

Language:Chinese

ISSN:10001328

CODEN:YUXUD6

Document type:Journal article (JA)

Publisher:China Spaceflight Society

Abstract:Given the problem that the common spiral-maneuver control method to realize both vertical and lateral overload needed is not applicable for a fixed-trim warhead with a controllable lift-force direction but an uncontrollable magnitude, a new spiral-maneuver control method is proposed for a moving-mass fixed-trim warhead in the control mode of single rolling channel. Firstly, the relative motion model is formulated with the spiraling angle and spiraling angular velocity. It is an intuitional description of the spiraling motion. Based on the relationship of the spiraling motion variables and angular rates of light-of-sight, the spiral-maneuver command is designed to ensure that the angular rates of light-of-sight converge to zero at the end. The back-stepping control method is then applied in the integrated guidance and control of the mass-point motion and the rolling attitude motion. The bank angle is controlled by a one-dimension moving mass to adjust the direction of the lift force. Thus, there's a component of the lift force controlling the angle between the relative velocity vector and the line of sight to trace the desired spiraling angle, while the rest component results in a spiraling angular velocity with an invariable direction. Numerical simulations demonstrate that the proposed spiral-maneuver control method is effective for a fixed-trim warhead in the mode of single rolling channel control. It is simple and potential to be used in engineering. © 2017, Editorial Dept. of JA. All right reserved.

Number of references:14

Main heading:Motion control

Controlled terms:Angular velocity - Numerical methods

Uncontrolled terms:Attitude motions - Back-stepping controls - Fixed-trim warhead - Integrated guidance and controls - Motion variables - Relative motion models - Relative velocity - Spiral maneuver

Classification code:731.3 Specific Variables Control - 921.6 Numerical Methods

DOI:10.3873/j.issn.1000-1328.2017.11.008

Database:Compendex

Accession number:20170303262993

Title:Simple and fast spectral domain algorithm for quantitative phase imaging of living cells with digital holographic microscopy

Authors:Min, Junwei (1, 2); Yao, Baoli (2); Ketelhut, Steffi (1); Engwer, Christian (3); Greve, Burkhard (4); Kemper, Björn (1)

Author affiliation:(1) Biomedical Technology Center, University of Muenster, Mendelstraße 17, Muenster; D-48149, Germany; (2) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (3) Institute for Computational and Applied Mathematics, University of Muenster, Orleans-Ring 10, Muenster; D-48149, Germany; (4) Department of Radiotherapy-Radiooncology, University of Muenster, Albert-Schweitzer Campus 1 Building A1, Muenster; D-48149, Germany

Corresponding author:Kemper, Björn(bkemper@uni-muenster.de)

Source title:Optics Letters

Abbreviated source title:Opt. Lett.

Volume:42

Issue:2

Issue date:January 15, 2017

Publication year:2017

Pages:227-230

Language:English

ISSN:01469592

E-ISSN:15394794

CODEN:OPLEDP

Document type:Journal article (JA)

Publisher:OSA - The Optical Society

Abstract:We present a simple and fast phase aberration compensation method in digital holographic microscopy (DHM) for quantitative phase imaging of living cells. By analyzing the frequency spectrum of an off-axis hologram, phase aberrations can be compensated for automatically without fitting or pre-knowledge of the setup and/or the object. Simple and effective computation makes the method suitable for quantitative online monitoring with highly variable DHM systems. Results from automated quantitative phase imaging of living NIH-3T3 mouse fibroblasts demonstrate the effectiveness and the feasibility of the method. © 2017 Optical Society of America.

Number of references:15

Main heading:Aberrations

Controlled terms:Cell culture - Holograms - Microscopic examination - Online systems - Phase measurement

Uncontrolled terms:Digital holographic microscopy - Frequency spectra - Living cell - Mouse-fibroblasts - Online monitoring - Phase aberrations - Quantitative phase imaging - Spectral domains

Classification code:722.4 Digital Computers and Systems - 743 Holography - 746 Imaging Techniques - 942.2 Electric Variables Measurements

DOI:10.1364/OL.42.000227

Funding details: Number: -, Acronym: CAAS, Sponsor: Chinese Academy of Agricultural Sciences;Number: -, Acronym: DFG, Sponsor: Deutsche Forschungsgemeinschaft;Number: -, Acronym: DFG, Sponsor: Deutsche Forschungsgemeinschaft;Number: 61405242, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: -, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;

Funding text:National Natural Science Foundation of China (NSFC) (61405242); Cluster of Excellence 1003 of the Deutsche Forschungsgemeinschaft (DFG) (DFG EXC 1003 Cells in Motion); Visiting Scholarship for Young Scientists, Chinese Academy of Science. J. M. was awarded a Visiting Scholarship of the Chinese Academy of Science for Young Scientists.

Database:Compendex

Accession number:20180404671057

Title:Improved automatic exposure algorithm for the stereoscopic panoramic camera in space application

Authors:Wang, Jiali (1, 2); Duan, Yongqiang (1); Zheng, Peiyun (1); Gao, Wei (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:10462

Part number:1 of 1

Issue title:AOPC 2017: Optical Sensing and Imaging Technology and Applications

Issue date:2017

Publication year:2017

Article number:104625D

Language:English

ISSN:0277786X

E-ISSN:1996756X

CODEN:PSISDG

ISBN-13:9781510614055

Document type:Conference article (CA)

Conference name:Applied Optics and Photonics China: Optical Sensing and Imaging Technology and Applications, AOPC 2017

Conference date:June 4, 2017 - June 6, 2017

Conference location:Beijing, China

Conference code:133396

Sponsor:Chinese Society for Optical Engineering; The Society of Photo-Optical Instrumentation Engineers (SPIE)

Publisher:SPIE

Abstract:The automatic exposure algorithms have been successfully used in a variety of imaging platforms. However, most automatic exposure algorithms are not suitable for the application in space due to the complicated space environment, such as dramatically varying temperature and special space background. Additionally, the algorithms must be designed to adapt to the hardware platform with the limited storage capacity and real-Time capability. This paper proposes an improved automatic exposure algorithm for the special application scenario in space, which is suitable for the real-Time application of space panorama cameras. In this paper, a simulation experiment of the mean-based exposure algorithm is carried out. And the result shows that temperature change and deep dark background in space environment will cause the computation error. So we introduce the iterative calculation and automatic threshold segmentation method to improve the mean-based exposure algorithm. The improved algorithm is implemented using FPGA in standard hardware description language (VHDL), and a test platform to simulating deep space environment is built with a halogen lamp, a whiteboard and a temperature controlled tank in a dark room. The experiment results show that the exposure time almost unchanged when the dark background varies greatly (25% - 100%), which verifies that the effect of dark background is removed. And it can be demonstrated that the influence of temperature on the algorithm is decreased, which based on the experiment result that the exposure time decreases with increasing temperature (15°C to 70°C). © 2017 SPIE.

Number of references:12

Main heading:Iterative methods

Controlled terms:Cameras - Computer hardware description languages - Hardware - Space applications - Stereo image processing

Uncontrolled terms:Automatic threshold - Increasing temperatures - Iterative calculation - Panoramic cameras - Real time capability - Real-time application - Special applications - Varying temperature

Classification code:605 Small Tools and Hardware - 656 Space Flight - 723.1.1 Computer Programming Languages - 723.2 Data Processing and Image Processing - 742.2 Photographic Equipment - 921.6 Numerical Methods

Numerical data indexing:Percentage 2.50e+01% to 1.00e+02%, Temperature 2.88e+02K to 3.43e+02K

DOI:10.1117/12.2285786

Database:Compendex

Accession number:20173804167426

Title:Medical Image Fusion Based on Feature Extraction and Sparse Representation (Open Access)

Authors:Fei, Yin (1, 2); Wei, Gao (2); Zongxi, Song (2)

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

Corresponding author:Fei, Yin(yinfei@opt.cn)

Source title:International Journal of Biomedical Imaging

Abbreviated source title:Int. J. Biomed. Imaging

Volume:2017

Issue date:2017

Publication year:2017

Article number:3020461

Language:English

ISSN:16874188

E-ISSN:16874196

Document type:Journal article (JA)

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

Abstract:As a novel multiscale geometric analysis tool, sparse representation has shown many advantages over the conventional image representation methods. However, the standard sparse representation does not take intrinsic structure and its time complexity into consideration. In this paper, a new fusion mechanism for multimodal medical images based on sparse representation and decision map is proposed to deal with these problems simultaneously. Three decision maps are designed including structure information map (SM) and energy information map (EM) as well as structure and energy map (SEM) to make the results reserve more energy and edge information. SM contains the local structure feature captured by the Laplacian of a Gaussian (LOG) and EM contains the energy and energy distribution feature detected by the mean square deviation. The decision map is added to the normal sparse representation based method to improve the speed of the algorithm. Proposed approach also improves the quality of the fused results by enhancing the contrast and reserving more structure and energy information from the source images. The experiment results of 36 groups of CT/MR, MR-T1/MR-T2, and CT/PET images demonstrate that the method based on SR and SEM outperforms five state-of-the-art methods. © 2017 Yin Fei et al.

Number of references:38

Main heading:Image enhancement

Controlled terms:Biomedical signal processing - Computerized tomography - Feature extraction - Image fusion - Medical imaging - Medical problems

Uncontrolled terms:Energy distributions - Image representations - Intrinsic structures - Mean square deviation - Multi-scale geometric analysis - Multimodal medical images - Sparse representation - Structure information

Classification code:716.1 Information Theory and Signal Processing - 723.2 Data Processing and Image Processing - 723.5 Computer Applications - 746 Imaging Techniques

DOI:10.1155/2017/3020461

Database:Compendex

Accession number:20180404671047

Title:A novel remote sensing image fusion scheme based on NSCT and Compressed Sensing

Authors:Wan, Peng (1); Song, Zongxi (2)

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

Corresponding author:Wan, Peng

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

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:10462

Part number:1 of 1

Issue title:AOPC 2017: Optical Sensing and Imaging Technology and Applications

Issue date:2017

Publication year:2017

Article number:104624T

Language:English

ISSN:0277786X

E-ISSN:1996756X

CODEN:PSISDG

ISBN-13:9781510614055

Document type:Conference article (CA)

Conference name:Applied Optics and Photonics China: Optical Sensing and Imaging Technology and Applications, AOPC 2017

Conference date:June 4, 2017 - June 6, 2017

Conference location:Beijing, China

Conference code:133396

Sponsor:Chinese Society for Optical Engineering; The Society of Photo-Optical Instrumentation Engineers (SPIE)

Publisher:SPIE

Abstract:In this letter, we propose a novel remote sensing image fusion method based on the non-subsampled contourlet transform and the compressed sensing (CS) theory.[2][3] Method First, the IHS transformation of the multispectral images is conducted to extract the I component. Secondly, the panchromatic image and the component intensity of the multispectral image are decomposed by NSCT. Then the NSCT coefficients of high and low frequency subbands are fused by different rules, respectively. For the high frequency subbands, the absolute maximum selection rule is used to integrate high-pass subbands; while the adaptive regional energy weighting rule is proposed to fuse low-pass subbands. The sparse coefficients are fused before being measured by Gaussian matrix. The fused image is accurately reconstructed by Compressive Sampling Matched Pursuit algorithm (CoSaMP). Some experiments are taken to investigate the performance of our proposed method, and the results prove its superiority to the counterparts. © 2017 SPIE.

Number of references:10

Main heading:Image fusion

Controlled terms:Adaptive optics - Compressed sensing - Image processing - Remote sensing

Uncontrolled terms:Compressive sampling - Compressive sensing - IHS transformation - Multispectral images - Non-sub-sampled contourlet transforms - Panchromatic images - Pursuit algorithms - Remote sensing images

Classification code:716.1 Information Theory and Signal Processing - 723.2 Data Processing and Image Processing - 741.1 Light/Optics

DOI:10.1117/12.2285590

Database:Compendex

Accession number:20173504083067

Title:Optical intensity square root differentiator based on an integrated Kerr frequency comb source

Authors:Xu, Xingyuan (1); Wu, Jiayang (1); Shoeiby, Mehrdad (2); Nguyen, Thach G. (2); Chu, Sai T. (3); Little, Brent E. (4); Morandotti, Roberto (5, 6, 7); Mitchell, Arnan (2); Moss, David J. (1)

Author affiliation:(1) Centre for Micro-Photonics, Swinburne University of Technology, Hawthorn; VIC; 3122, Australia; (2) School of Engineering, RMIT University, Melbourne; VIC; 3000, Australia; (3) Department of Physics and Material Science, City University of Hong Kong, Tat Chee Avenue, Hong Kong; (4) Xi'an Institute of Optics and Precision Mechanics Precision Mechanics of CAS, Xi'an, China; (5) INSR-Énergie, Matériaux et Télécommunications, 1650 Boulevard Lionel-Boulet, Varennes; QC; J3X 1S2, Canada; (6) National Research University of Information Technologies, Mechanics and Optics, St. Petersburg, Russia; (7) Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu; 610054, China

Corresponding author:Moss, David J.(dmoss@swin.edu.au)

Source title:Optics InfoBase Conference Papers

Abbreviated source title:Opt. InfoBase Conf. Pap

Volume:Part F52-IPRSN 2017

Part number:1 of 1

Issue title:Advanced Photonics, IPRSN 2017

Issue date:2017

Publication year:2017

Language:English

ISBN-13:9781557528209

Document type:Conference article (CA)

Conference name:Advanced Photonics, IPRSN 2017

Conference date:July 24, 2017 - July 27, 2017

Conference location:New Orleans, LA, United states

Conference code:136878

Publisher:OSA - The Optical Society

Abstract:We propose and experimentally demonstrate an optical intensity square root differentiator based on an integrated comb source. The proposed differentiator features full reconfigurablity and compact structure. Transmission responses and temporal characterization are also experimentally demonstrated. © OSA 2017.

Number of references:7

Page count:3

Main heading:Fiber optic sensors

Uncontrolled terms:Comb source - Compact structures - Differentiators - Frequency combs - Optical intensities - Reconfigurablity - Square roots - Transmission response

Classification code:741.1.2 Fiber Optics

DOI:10.1364/IPRSN.2017.IW1A.3

Database:Compendex

Accession number:5096588

Title:Hyperspectral Image Superresolution by Transfer Learning

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

Author affiliation:(1) Center for OPTical IMagery Analysis and Learning, State Key Laboratory of Transient Optics and Photonics, Xian Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xian; 710119, China

Corresponding author:Lu, Xiaoqiang(luxq666666@gmail.com)

Source title:IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing

Abbreviated source title:IEEE J. Sel. Top. Appl. Earth Obs. Remote Sens.

Volume:10

Issue:5

Issue date:May 2017

Publication year:2017

Pages:1963-1974

Article number:7855724

Language:English

ISSN:19391404

E-ISSN:21511535

Document type:Journal article (JA)

Publisher:Institute of Electrical and Electronics Engineers

Abstract:Hyperspectral image superresolution is a highly attractive topic in computer vision and has attracted many researchers' attention. However, nearly all the existing methods assume that multiple observations of the same scene are required with the observed low-resolution hyperspectral image. This limits the application of superresolution. In this paper, we propose a new framework to enhance the resolution of hyperspectral images by exploiting the knowledge from natural images: The relationship between low/high-resolution images is the same as that between low/high-resolution hyperspectral images. In the proposed framework, the mapping between low- A nd high-resolution images can be learned by deep convolutional neural network and be transferred to hyperspectral image by borrowing the idea of transfer learning. In addition, to study the spectral characteristic between low- A nd high-resolution hyperspectral image, collaborative nonnegative matrix factorization (CNMF) is proposed to enforce collaborations between the low- A nd high-resolution hyperspectral images, which encourages the estimated solution to extract the same endmembers with low-resolution hyperspectral image. The experimental results on ground based and remote sensing data suggest that the proposed method achieves comparable performance without requiring any auxiliary images of the same scene. © 2016 IEEE.

Number of references:58

Controlled terms:artificial neural network - computer vision - image resolution - imaging method - mapping - remote sensing

Classification code:71.8.5.4 Remote sensing: numerical and image analysis

DOI:10.1109/JSTARS.2017.2655112

Database:GEOBASE

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, Shenzhen; 518057, Hong Kong; (2) Department of Applied Physics, The Hong Kong Polytechnic University, Hong Kong; (3) Key Laboratory of Spectral Imaging Technology, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China

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

Source title:Advanced Optical Materials

Abbreviated source title:Adv. Opt. Mater.

Volume:5

Issue:2

Issue date:January 18, 2017

Publication year:2017

Article number:1600399

Language:English

E-ISSN:21951071

Document type:Journal article (JA)

Publisher:Wiley-VCH Verlag

Abstract:Plasmonic resonance of noble metal nanoparticles can drastically enhance the visible response of wide-bandgap photocatalysts such as TiO<inf>2</inf>, 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 TiO<inf>2</inf> layer 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 TiO<inf>2</inf> film. 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

Number of references:39

Main heading:Gold nanoparticles

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

Uncontrolled terms:black absorbers - Current technology - Perfect absorber - Photo-thermal systems - Plasmonic resonances - 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 - 804.2 Inorganic Compounds - 931.3 Atomic and Molecular Physics

Numerical data indexing:Size 2.00e-07m

DOI:10.1002/adom.201600399

Funding details: Number: 509513, Acronym: -, Sponsor: Hong Kong Arts Development Council;Number: G-YN07, Acronym: -, Sponsor: Hong Kong Polytechnic University;Number: 61377068, Acronym: -, Sponsor: National Natural Science Foundation of China;

Funding text:This work was supported by the National Natural Science Foundation of China (no. 61377068), the Research Grants Council of Hong Kong (N_PolyU505/13, PolyU 5334/12E, PolyU 152184/15E, and 509513), and The Hong Kong Polytechnic University (grants G-YN07, G-YBBE, 4-BCAL, 1-ZVAW, 1-ZE14, A-PM21, 1-ZE27, and 1-ZVGH).

Database:Compendex

Accession number:20172703875075

Title:Packaging IGBT modules by rapid sintering of nanosilver paste in a current way

Authors:Xie, Yijing (1); Mei, Yunhui (1); Feng, Shuangtao (1); Zhang, Pu (2); Zhang, Long (3); Yang, Yingkun (3)

Author affiliation:(1) School of Material Science and Engineering, Tianjin Key Laboratory of Advanced Joining Technology, Tianjin University, Tianjin, China; (2) State Key Laboratory of Transient Optics and Photonics, Chinese Academy of Sciences, Xi'an, China; (3) Microsystem and Terahertz Research Center, China Academy of Engineering Physics, Chengdu; 610200, China

Corresponding author:Mei, Yunhui(yunhui@tju.edu.cn)

Source title:2017 International Conference on Electronics Packaging, ICEP 2017

Abbreviated source title:Int. Conf. Electron. Pack., ICEP

Part number:1 of 1

Issue title:2017 International Conference on Electronics Packaging, ICEP 2017

Issue date:June 5, 2017

Publication year:2017

Pages:112-116

Article number:7939336

Language:English

ISBN-13:9784990218836

Document type:Conference article (CA)

Conference name:2017 International Conference on Electronics Packaging, ICEP 2017

Conference date:April 19, 2017 - April 22, 2017

Conference location:Tendo, Yamagata, Japan

Conference code:128207

Sponsor:ASE Group; Components, Packaging, and Manufacturing Technology Society Japan Chapter (IEEE CPMT); et al.; International Microelectronics and Packaging Society, iMAPS; Namics; The Japan Institute of Electronics Packaging (JIEP)

Publisher:Institute of Electrical and Electronics Engineers Inc.

Abstract:Rapid sintering of nanosilver paste had been proposed to bond power chips in our previous work. It seems a potential good way to improve the efficiency of power module manufacturing because of the much shorter sintering time, i.e., 15 seconds. In this study, we tried the way of rapid sintering of nanosilver paste for bonding power chips in order to verify the feasibility of the rapid sintering method. Both the static and the dynamic performance of the IGBT modules using rapid sintered nanosilver as die attachment have been characterized at both room temperature and 150oC. The results shows that this rapid sintering way could be used to bond power chips in a much shorter time to fabricate IGBT modules using nanosilver paste because of the comparable static and dynamic electrical properties as those of commercial IGBT modules with the same power rating from MacMic and Infineon. © 2017 Japan Institute of Electronics Packaging.

Number of references:14

Main heading:Sintering

Controlled terms:Chip scale packages - Insulated gate bipolar transistors (IGBT)

Uncontrolled terms:Current sintering - Double pulse - Igbt-modules - Nano silver - Rapid sintering

Classification code:714.2 Semiconductor Devices and Integrated Circuits

Numerical data indexing:Time 1.50e+01s

DOI:10.23919/ICEP.2017.7939336

Funding details: Number: 2015AA034501, Acronym: -, Sponsor: -;Number: 61334010, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 13JCQNJC06600, Acronym: -, Sponsor: Natural Science Foundation of Tianjin Municipal Science and Technology Commission;Number: 13ZCZDGX01106, Acronym: -, Sponsor: Natural Science Foundation of Tianjin Municipal Science and Technology Commission;

Funding text:The authors would like to gratefully acknowledge the financial supports from the National Natural Science Foundation of China (No. 61334010), the National High Technology Research and Development Program of China (No. 2015AA034501), and the Tianjin Municipal Natural Science Foundation (Nos. 13ZCZDGX01106 and 13JCQNJC06600).

Database:Compendex

Accession number:20172003677493

Title:Sparse Learning with Stochastic Composite Optimization

Authors:Zhang, Weizhong (1); Zhang, Lijun (2); Jin, Zhongming (1); Jin, Rong (3); Cai, Deng (1); Li, Xuelong (4); Liang, Ronghua (5); He, Xiaofei (1)

Author affiliation:(1) State Key Lab of CADandCG, College of Computer Science, Zhejiang University, 388 Yuhang Tang Road, Hangzhou, Zhejiang; 310058, China; (2) National Key Laboratory for Novel Software Technology, Nanjing University, Nanjing, Jiangsu; 210023, China; (3) Alibaba Group, Seattle; WA; 98057, United States; (4) Center for OPTical IMagery Analysis and Learning (OPTIMAL), State Key Laboratory of Transicent Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xian, Shaanxi; 710119, China; (5) College of Information Engineering, Zhejiang University of Technology, No. 288 Liuhe Road, Hangzhou, Zhejiang; 310058, China

Source title:IEEE Transactions on Pattern Analysis and Machine Intelligence

Abbreviated source title:IEEE Trans Pattern Anal Mach Intell

Volume:39

Issue:6

Issue date:June 1, 2017

Publication year:2017

Pages:1223-1236

Article number:7486981

Language:English

ISSN:01628828

CODEN:ITPIDJ

Document type:Journal article (JA)

Publisher:IEEE Computer Society

Abstract:In this paper, we study Stochastic Composite Optimization (SCO) for sparse learning that aims to learn a sparse solution from a composite function. Most of the recent SCO algorithms have already reached the optimal expected convergence rate O(1/λT), but they often fail to deliver sparse solutions at the end either due to the limited sparsity regularization during stochastic optimization (SO) or due to the limitation in online-to-batch conversion. Even when the objective function is strongly convex, their high probability bounds can only attain O(log(1/δ)/T) with δ is the failure probability, which is much worse than the expected convergence rate. To address these limitations, we propose a simple yet effective two-phase Stochastic Composite Optimization scheme by adding a novel powerful sparse online-to-batch conversion to the general Stochastic Optimization algorithms. We further develop three concrete algorithms, OptimalSL, LastSL and AverageSL, directly under our scheme to prove the effectiveness of the proposed scheme. Both the theoretical analysis and the experiment results show that our methods can really outperform the existing methods at the ability of sparse learning and at the meantime we can improve the high probability bound to approximately O(log(log(T)/δ)/λT). © 2016 IEEE.

Number of references:29

Main heading:Stochastic systems

Controlled terms:Optimization - Probability

Uncontrolled terms:Composite functions - Composite optimization - Failure Probability - Objective functions - Sparse learning - Sparsity regularizations - Stochastic optimization algorithm - Stochastic optimizations

Classification code:921.5 Optimization Techniques - 922.1 Probability Theory - 961 Systems Science

DOI:10.1109/TPAMI.2016.2578323

Funding details: Number: 2013CB336500, Acronym: -, Sponsor: -;Number: 61233011, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;

Funding text:This work was supported by the National Basic Research Program of China (973 Program) under Grant 2013CB336500, National Natural Science Foundation of China under Grant 61233011, and National Youth Topnotch Talent Support Program.

Database:Compendex

Accession number:20174704432658

Title:The effect factors of the line of sight jitter

Authors:Chang, Sansan (1); Yang, Hongtao (1); Liu, Guangsen (1); Gao, Bo (1); Guo, Yunzeng (1)

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

Source title:Proceedings - 9th International Conference on Intelligent Human-Machine Systems and Cybernetics, IHMSC 2017

Abbreviated source title:Proc. - Int. Conf. Intell. Hum.-Mach. Syst. Cybern., IHMSC

Volume:2

Part number:2 of 2

Issue title:Proceedings - 9th International Conference on Intelligent Human-Machine Systems and Cybernetics, IHMSC 2017

Issue date:September 20, 2017

Publication year:2017

Pages:245-248

Article number:8048152

Language:English

ISBN-13:9781538630228

Document type:Conference article (CA)

Conference name:9th International Conference on Intelligent Human-Machine Systems and Cybernetics, IHMSC 2017

Conference date:August 26, 2017 - August 27, 2017

Conference location:Hangzhou, Zhejiang, China

Conference code:130925

Publisher:Institute of Electrical and Electronics Engineers Inc.

Abstract:The stability precision is the key technical factor of optical-electro inertially stabilized platform. Combined with the mechanism of inertially stabilized platform system, the mathematical model of the pitch gimbal of inertially stabilized platform is established. The disturbance impacts of stability precision are analyzed and concluded in this paper. And the expression about how the disturbance source impact line of sight precision are deduced by the analysis of mathematical mode with classical engineering control algorithm. The analyses are validated by simulations and experiments, which may provide the reference for engineering application. © 2017 IEEE.

Number of references:6

Main heading:Precision engineering

Controlled terms:Cybernetics - Jitter - Man machine systems

Uncontrolled terms:Disturbance torque - Electromotive torque - Engineering applications - Engineering controls - Gyro noise - Inertially stabilized platforms - Line of Sight - Technical factors

DOI:10.1109/IHMSC.2017.168

Database:Compendex

Accession number:20174404314074

Title:Nuclear Norm-Based 2DLPP for Image Classification

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

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

Corresponding author:Yuan, Chun(yuanc@sz.tsinghua.edu.cn)

Source title:IEEE Transactions on Multimedia

Abbreviated source title:IEEE Trans Multimedia

Volume:19

Issue:11

Issue date:November 2017

Publication year:2017

Pages:2391-2403

Article number:7924357

Language:English

ISSN:15209210

CODEN:ITMUF8

Document type:Journal article (JA)

Publisher:Institute of Electrical and Electronics Engineers Inc.

Abstract:Two-dimensional locality preserving projections (2DLPP) that use 2D image representation in preserving projection learning can preserve the intrinsic manifold structure and local information of data. However, 2DLPP is based on the Euclidean distance, which is sensitive to noise and outliers in data. In this paper, we propose a novel locality preserving projection method called nuclear norm-based two-dimensional locality preserving projections (NN-2DLPP). First, NN-2DLPP recovers the noisy data matrix through low-rank learning. Second, noise in data is removed and the learned clean data points are projected on a new subspace. Without the disturbance of noise, data points belonging to the same class are kept as close to each other as possible in the new projective subspace. Experimental results on six public image databases with face recognition, object classification, and handwritten digit recognition tasks demonstrated the effectiveness of the proposed method. © 1999-2012 IEEE.

Number of references:62

Main heading:Image classification

Controlled terms:Character recognition - Classification (of information) - Face recognition - Two dimensional

Uncontrolled terms:Handwritten digit recognition - Locality preserving projections - Object classification - preserving projections - Public image database - robust - Two-dimensional locality preserving projection (2DLPP) - Two-dimensional locality preserving projections

Classification code:716.1 Information Theory and Signal Processing

DOI:10.1109/TMM.2017.2703130

Funding details: Number: 2016M590100, Acronym: -, Sponsor: China Postdoctoral Science Foundation;Number: 2011AA01A205, Acronym: -, Sponsor: -;Number: 61602270, Acronym: -, Sponsor: National Natural Science Foundation of China;

Funding text:Manuscript received October 19, 2016; revised February 27, 2017 and April 26, 2017; accepted May 4, 2017. Date of publication May 10, 2017; date of current version October 13, 2017. This work was supported in part by the Natural Science Foundation of China under Grant 61602270, Grant 61375012, Grant 61573248, Grant 61761130079, and Grant U1433112, in part by the China Postdoctoral Science Foundation under Grant 2016M590100 and Grant 2016M590812, and in part by the National High Technology Research and Development Plan (863 Plan) under Grant 2011AA01A205. The associate editor coordinating the review of this manuscript and approving it for publication was Dr. Wolfgang Hürst. (Corresponding author: Chun Yuan.) Y. Lu and C. Yuan are with the Tsinghua-CUHK Joint Research Center for Media Sciences, Technologies, and Systems, Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, China (e-mail: luyuwu2008@163.com; yuanc@sz.tsinghua.edu.cn).

Database:Compendex

Accession number:20172403762954

Title:Generation of carrier-envelope phase stabilized laser from solid plates and application in high-harmonic generation

Authors:Liu, Yangyang (1); He, Peng (2); Zhao, Kun (1); Huang, Hangdong (2); Jiang, Yujiao (2); Huang, Pei (3); Teng, Hao (1); He, Xinkui (1); Fang, Shaobo (1); Hou, Xun (3); Wei, Zhiyi (1)

Author affiliation:(1) Institute of Physics, Chinese Academy of Sciences, Beijing; 100190, China; (2) School of Physics and Optoelectronics Engineering, Xidian University, Xi'an; 710071, China; (3) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China

Source title:Optics InfoBase Conference Papers

Abbreviated source title:Opt. InfoBase Conf. Pap

Volume:Part F43-CLEO_AT 2017

Part number:1 of 1

Issue title:CLEO: Applications and Technology, CLEO_AT 2017

Issue date:2017

Publication year:2017

Language:English

ISBN-13:9781557528209

Document type:Conference article (CA)

Conference name:CLEO: Applications and Technology, CLEO_AT 2017

Conference date:May 14, 2017 - May 19, 2017

Conference location:San Jose, CA, United states

Conference code:135878

Publisher:OSA - The Optical Society

Abstract:We demonstrated carrier-envelope phase (CEP) stabilized pulse as short as 5.4fs by compressing the octave-spanning spectrum from solid-state plates. Continuous and discrete HHG were observed by using the laser pulse as driver with different CEP. © 2017 OSA.

Number of references:8

Page count:2

Main heading:Harmonic generation

Uncontrolled terms:Carrier-envelope phase - High harmonic generation - Octave-spanning spectra - Solid plates - Stabilized lasers

Numerical data indexing:Time 5.40e-15s

DOI:10.1364/CLEO_AT.2017.AF1B.4

Database:Compendex

Accession number:20180404671595

Title:Integrated generation of complex optical quantum states and their coherent control

Authors:Roztocki, Piotr (1); Kues, Michael (1, 2); Reimer, Christian (1); Romero Cortés, Luis (1); Sciara, Stefania (1, 3); Wetzel, Benjamin (1, 4); Zhang, Yanbing (1); Cino, Alfonso (3); Chu, Sai T. (5); Little, Brent E. (6); Moss, David J. (7); Caspani, Lucia (8, 9); Azaña, José (1); Morandotti, Roberto (1, 10, 11)

Author affiliation:(1) INRS-EMT, 1650 Boulevard Lionel-Boulet, Varennes; QC; J3X 1S2, Canada; (2) School of Engineering, University of Glasgow, Rankine Building, Oakfield Avenue, Glasgow; G12 8LT, United Kingdom; (3) Department of Energy, Information Engineering and Mathematical Models, University of Palermo, Palermo, Italy; (4) School of Mathematical and Physical Sciences, University of Sussex, Falmer, Brighton; BN1 9RH, United Kingdom; (5) Department of Physics and Material Science, City University of Hong Kong, Tat Chee Avenue, Hong Kong, Hong Kong; (6) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Science, Xi'an, China; (7) Centre for Micro Photonics, Swinburne University of Technology, Hawthorn; VIC; 3122, Australia; (8) Institute of Photonics, Department of Physics, University of Strathclyde, Glasgow; G1 1RD, United Kingdom; (9) Institute of Photonics and Quantum Sciences, Heriot-Watt University, Edinburgh; EH14 4AS, United Kingdom; (10) Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu; 610054, China; (11) National Research University of Information Technologies, Mechanics and Optics, St Petersburg, Russia

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

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:10456

Part number:1 of 1

Issue title:Nanophotonics Australasia 2017

Issue date:2017

Publication year:2017

Article number:104561A

Language:English

ISSN:0277786X

E-ISSN:1996756X

CODEN:PSISDG

ISBN-13:9781510613935

Document type:Conference article (CA)

Conference name:Nanophotonics Australasia 2017

Conference date:December 10, 2017 - December 13, 2017

Conference location:Melbourne, VIC, Australia

Conference code:133393

Sponsor:AXT Inc.; Lastek; neaspec GmbH; PriTel, Inc.; Swinburne University of Technology; WITec

Publisher:SPIE

Abstract:Complex optical quantum states based on entangled photons are essential for investigations of fundamental physics and are the heart of applications in quantum information science. Recently, integrated photonics has become a leading platform for the compact, cost-efficient, and stable generation and processing of optical quantum states. However, onchip sources are currently limited to basic two-dimensional (qubit) two-photon states, whereas scaling the state complexity requires access to states composed of several (<2) photons and/or exhibiting high photon dimensionality. Here we show that the use of integrated frequency combs (on-chip light sources with a broad spectrum of evenly-spaced frequency modes) based on high-Q nonlinear microring resonators can provide solutions for such scalable complex quantum state sources. In particular, by using spontaneous four-wave mixing within the resonators, we demonstrate the generation of bi- and multi-photon entangled qubit states over a broad comb of channels spanning the S, C, and L telecommunications bands, and control these states coherently to perform quantum interference measurements and state tomography. Furthermore, we demonstrate the on-chip generation of entangled high-dimensional (quDit) states, where the photons are created in a coherent superposition of multiple pure frequency modes. Specifically, we confirm the realization of a quantum system with at least one hundred dimensions. Moreover, using off-the-shelf telecommunications components, we introduce a platform for the coherent manipulation and control of frequencyentangled quDit states. Our results suggest that microcavity-based entangled photon state generation and the coherent control of states using accessible telecommunications infrastructure introduce a powerful and scalable platform for quantum information science. © COPYRIGHT SPIE. Downloading of the abstract is permitted for personal use only.

Number of references:20

Main heading:Quantum entanglement

Controlled terms:Four wave mixing - Light - Light sources - Nanophotonics - Photonics - Photons - Quantum communication - Quantum computers - Quantum optics - Resonators

Uncontrolled terms:Coherent manipulation - Coherent superpositions - Frequency combs - Integrated photonics - Nonlinear process - Quantum information science - Spontaneous four-wave mixing - Telecommunications infrastructures

Classification code:716 Telecommunication; Radar, Radio and Television - 722 Computer Systems and Equipment - 741.1 Light/Optics - 931.3 Atomic and Molecular Physics - 931.4 Quantum Theory; Quantum Mechanics

DOI:10.1117/12.2286435

Funding details: Number: -, Acronym: NSERC, Sponsor: Natural Sciences and Engineering Research Council of Canada;Number: -, Acronym: NSERC, Sponsor: Natural Sciences and Engineering Research Council of Canada;Number: IT06530, Acronym: -, Sponsor: Mitacs;Number: 207748, Acronym: -, Sponsor: -;Number: 7004189, Acronym: CityU, Sponsor: City University of Hong Kong;Number: -, Acronym: REA, Sponsor: Research Executive Agency;Number: 656607, Acronym: -, Sponsor: -;Number: XDB24030300, Acronym: CAS, Sponsor: Chinese Academy of Sciences;Number: PIOF-GA-2013-625466, Acronym: -, Sponsor: -;Number: 074-U 01, Acronym: -, Sponsor: Government Council on Grants, Russian Federation;Number: DP150104327, Acronym: -, Sponsor: -;Number: -, Acronym: -, Sponsor: Canada Research Chairs;

Funding text:We thank R. Helsten for technical insights; P. Kung from QPS Photronics for the help and processing equipment; as well as QuantumOpus and N. Bertone of OptoElectronics Components for their support and for providing us with state-of-the-art photon detection equipment. This work was made possible by the following funding sources: Natural Sciences and Engineering Research Council of Canada (NSERC) (Steacie, Strategic, Discovery, and Acceleration Grants Schemes, Vanier Canada Graduate Scholarships, USRA Scholarship); Mitacs (IT06530) and PBEEE (207748); MESI

Database:Compendex

Accession number:20170303255295

Title:Efficient point matching under uneven and dramatic illumination changes

Authors:Yang, Rui (1, 2); Liu, Zhaohui (1); Yang, Tao (1, 2); Li, Wenhao (1, 2)

Author affiliation:(1) Chinese Academy of Sciences, Xi'An Institute of Optics and Precision Mechanics, No. 17 Xinxi Road, Xi'an; 710119, China; (2) University of Chinese Academy of Sciences, No. 19A Yuquanlu, Beijing; 100049, China

Corresponding author:Yang, Rui(yangrui@opt.cn)

Source title:Journal of Electronic Imaging

Abbreviated source title:J. Electron. Imaging

Volume:26

Issue:1

Issue date:January 1, 2017

Publication year:2017

Article number:013001

Language:English

ISSN:10179909

E-ISSN:1560229X

CODEN:JEIME5

Document type:Journal article (JA)

Publisher:SPIE

Abstract:Point matching under illumination changes is significant for many vision information applications. However, the uneven and dramatic illumination variations model is rarely considered in existing point matching algorithms. Therefore, a method to match features efficiently under uneven and dramatic illumination changes is presented. This method extracts and describes illumination invariant interesting points from matched multibrightness layers that are obtained by a set of contrast stretching functions and prior information based on original images. Layers matching is insensitive to large unevenness of illumination changes and provides similar images in brightness and structure, so the effects of large uneven illumination changes can be reduced greatly. This algorithm is compatible with most detectors and descriptors. To accelerate the computing speed, the features from the accelerated segment test detector and the improved speeded up robust features descriptor are chosen in this paper. In addition, the combination of priority Hamming distance matching and Lowe's matching algorithms is first proposed to increase the matching speed. This method is generic and can be used in most point matching under all varying illumination conditions. Experimental results demonstrate that the proposed method improves the quality of matched points significantly. © 2017 SPIE and IS&T.

Number of references:31

Main heading:Hamming distance

Controlled terms:Computer applications - Imaging techniques

Uncontrolled terms:Illumination conditions - Illumination invariant - Illumination variation - matched multibrightness layers - Point-matching - priority Hamming distance matching - Speeded up robust features - Uneven illuminations

Classification code:723.5 Computer Applications - 746 Imaging Techniques

DOI:10.1117/1.JEI.26.1.013001

Database:Compendex

Accession number:20170503309096

Title:Passively mode-locked laser with an ultra-narrow spectral width

Authors:Kues, Michael (1, 2); Reimer, Christian (1); Wetzel, Benjamin (1, 3); Roztocki, Piotr (4); Little, Brent E. (5); Chu, Sai T. (1); Hansson, Tobias (1); Viktorov, Evgeny A. (6); Moss, David J. (7); Morandotti, Roberto (1, 6, 8)

Author affiliation:(1) Institut National de la Recherche Scientifique-Energie Materiaux Telecommunications, 1650 Boulevard Lionel-Boulet, Varennes; QLD; J3X 1S2, Canada; (2) School of Engineering, University of Glasgow, Rankine Building, Oakfield Avenue, Glasgow; G12 8LT, United Kingdom; (3) School of Mathematical and Physical Sciences, University of Sussex, Falmer, Brighton; BN1 9RH, United Kingdom; (4) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Science, Xinxi Ave, Xi'an, Shaanxi, China; (5) Department of Physics and Materials Science, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, Hong Kong; (6) National Research University of Information Technologies, Mechanics and Optics, Petersburg; 199034, Russia; (7) Centre for Micro Photonics, Swinburne University of Technology, Hawthorn; VIC; 3122, Australia; (8) Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of Chin, Chengdu Sichuan; 610054, China

Source title:Nature Photonics

Abbreviated source title:Nat. Photon.

Volume:11

Issue:3

Issue date:March 1, 2017

Publication year:2017

Pages:159-162

Language:English

ISSN:17494885

E-ISSN:17494893

Document type:Journal article (JA)

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

Abstract:Most mode-locking techniques introduced in the past focused mainly on increasing the spectral bandwidth to achieve ultrashort, sub-picosecond-long coherent light pulses. By contrast, less importance seemed to be given to mode-locked lasers generating Fourier-Transform-limited nanosecond pulses, which feature the narrow spectral bandwidths required for applications in spectroscopy, the efficient excitation of molecules, sensing and quantum optics. Here, we demonstrate a passively mode-locked laser system that relies on simultaneous nested cavity filtering and cavity-enhanced nonlinear interactions within an integrated microring resonator. This allows us to produce optical pulses in the nanosecond regime (4.3 ns in duration), with an overall spectral bandwidth of 104.9 MHz-more than two orders of magnitude smaller than previous realizations. The very narrow bandwidth of our laser makes it possible to fully characterize its spectral properties in the radiofrequency domain using widely available GHz-bandwidth optoelectronic components. In turn, this characterization reveals the strong coherence of the generated pulse train.

Number of references:31

Main heading:Mode-locked fiber lasers

Controlled terms:Bandwidth - Fourier series - Laser pulses - Lasers - Passive mode locking - Quantum optics

Uncontrolled terms:Microring resonator - Mode-locking techniques - Nonlinear interactions - Optoelectronic components - Orders of magnitude - Passively mode-locked lasers - Spectral bandwidth - Spectral properties

Classification code:716.1 Information Theory and Signal Processing - 741.1 Light/Optics - 744.1 Lasers, General - 921.3 Mathematical Transformations

Numerical data indexing:Time 4.30e-09s

DOI:10.1038/nphoton.2016.271

Funding text:Natural Sciences and Engineering Research Council of Canada (NSERC)

Database:Compendex

Accession number:20170603336018

Title:High-efficiency supercontinuum generation in solid thin plates at 0.1 TW level

Authors:He, Peng (1, 2); Liu, Yangyang (2); Zhao, Kun (2); Teng, Hao (2); He, Xinkui (2); Huang, Pei (3); Huang, Hangdong (1); Zhong, Shiyang (2); Jiang, Yujiao (1); Fang, Shaobo (2); Hou, Xun (3); Wei, Zhiyi (2)

Author affiliation:(1) School of Physics and Optoelectronics Engineering, Xidian University, Xi'an; 710071, China; (2) Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing; 100190, China; (3) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China

Corresponding author:Zhao, Kun(zhaokun@iphy.ac.cn)

Source title:Optics Letters

Abbreviated source title:Opt. Lett.

Volume:42

Issue:3

Issue date:February 1, 2017

Publication year:2017

Pages:474-477

Language:English

ISSN:01469592

E-ISSN:15394794

CODEN:OPLEDP

Document type:Journal article (JA)

Publisher:OSA - The Optical Society

Abstract:Supercontinuum generation in a solid-state medium was investigated experimentally. A continuum covering 460 to 950 nm was obtained when 0.8 mJ/30 fs Ti:sapphire laser pulses were applied to seven thin fused silica plates at a 1 kHz repetition rate. The primary processes responsible for spectral broadening were self-phase modulation (SPM) and self-steepening, while SPM and self-focusing were balanced to optimize the spectral broadening and suppress the multiphoton process. The output was compressed to a 5.4 fs and a 0.68 mJ pulse, corresponding to two optical cycles and 0.13 TW of peak power. © 2017 Optical Society of America.

Number of references:41

Main heading:Supercontinuum generation

Controlled terms:Fused silica - Multiphoton processes - Pulse repetition rate - Sapphire - Self phase modulation

Uncontrolled terms:Fused silica plates - High-efficiency - Optical cycles - Repetition rate - Self-focusing - Self-steepening - Spectral broadening - Ti: Sapphire laser

Classification code:482.2.1 Gems - 741.1.1 Nonlinear Optics - 744.1 Lasers, General - 812.3 Glass

Numerical data indexing:Energy 6.80e-04J, Frequency 1.00e+03Hz, Power 1.00e+11W, Power 1.30e+11W, Size 4.60e-07m to 9.50e-07m, Time 5.40e-15s

DOI:10.1364/OL.42.000474

Funding details: Number: 2013CB922401, Acronym: -, Sponsor: -;Number: 2013CB922402, Acronym: -, Sponsor: -;Number: 11574384, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 11434016, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61575219, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61210017, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: -, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;

Funding text:National Key Basic Research Program of China (2013CB922401, 2013CB922402); National Natural Science Foundation of China (NSFC) (11434016, 11574384, 61575219); International Joint Research Program of the National Natural Science Foundation of China (61210017).

Database:Compendex

Accession number:20175204570947

Title:Design of compact high zoom ratio infrared optical system

Authors:Qu, Rui (1); Mei, Chao (1); Yang, Hongtao (1); Cao, Jianzhong (1); Zhao, Yan (2)

Author affiliation:(1) Xi'an Institute of Optical and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (2) Luoyang Electro-optical Equipment Research Institute of Aviation Industry Corporation of China, Luoyang; 471009, China

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

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

Volume:46

Issue:11

Issue date:November 25, 2017

Publication year:2017

Article number:1104002

Language:Chinese

ISSN:10072276

Document type:Journal article (JA)

Publisher:Chinese Society of Astronautics

Abstract:In order to solve the problems in high zoom ratio lens design, a two-stage-of-series zoom lens model was proposed based on optics zoom theory. Therefore, differential zoom equations were deduced and solved to help the lens power assignments, also the cam curve optimization condition and method were proved. In this model, first stage zoom was achieved by the two-part-zoom front part, and the given movement pattern of the compensation lens and the second magnified lens determined the second stage zoom, by which the 100% cooled stop efficiency was assured. Based on this method, a 70x MWIR zoom lens under the requirements of F/4, focal length 6.5-455 mm, HFOV 0.92°-58.2°, work waveband 3.7-4.8 μm was designed, which only used two kinds of infrared materials, consisted of 10 lenses, total length 300 mm, had good image quality and tolerance character. © 2017, Editorial Board of Journal of Infrared and Laser Engineering. All right reserved.

Number of references:15

Main heading:Lenses

Controlled terms:Curve fitting - Infrared radiation - Optical design - Optical systems

Uncontrolled terms:Focal lengths - High zoom ratio - Infrared material - Infrared optical systems - Infrared technology - Movement pattern - Optimization conditions - Zoom lens

Classification code:741.1 Light/Optics - 741.3 Optical Devices and Systems - 921.6 Numerical Methods

Numerical data indexing:Percentage 1.00e+02%, Size 3.00e-01m, Size 3.70e-06m to 4.80e-06m, Size 6.50e-03m to 4.55e-01m

DOI:10.3788/IRLA201746.1104002

Database:Compendex

Accession number:20171703607581

Title:Design of VisSWIR continuous zoom optical system

Authors:Yang, Mingyang (1, 2); Yang, Hongtao (1, 2); Qu, Ruia (1); Mei, Chaoa (1); Zhou, Zuofeng (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:Yang, Mingyang(yangmingyang@opt.cn)

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

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:10256

Part number:1 of 1

Issue title:Second International Conference on Photonics and Optical Engineering

Issue date:2017

Publication year:2017

Article number:102564P

Language:English

ISSN:0277786X

E-ISSN:1996756X

CODEN:PSISDG

Document type:Conference article (CA)

Conference name:2nd International Conference on Photonics and Optical Engineering

Conference date:October 14, 2016

Conference location:Xi'an, China

Conference code:127345

Publisher:SPIE

Abstract:For 640 pixel×512 pixel cooled staring focal plane array detector, a VisSWIR wideband continuous zoom optical system with 7X zoom range is presented based on the pattern of the negative zoom group and compensating lens group. The zoom system provides continuous changed in the field of view from narrow to the wide. The zoom optical system works in the range of 0.4μm&sim;1.7μm, F number is 4, the pixel of the detector is 15μm. It realizes 20mm&sim;140mm continuous zoom with a smooth zoom path and provided high image quality with the whole zoom range, the zoom ratio is 7:1. The modulation transfer function(MTF) for the system is above 0.5 within the whole focal length range at spatial frequency of 34lp/mm and it almost approaches the diffraction limit. RMS value of spot diameter was investigation, the maximum distortion value is less than 5% and the surface type of all lens applied is spherical. Moreover, the cam curve after optimization is given by the optical design software Code V macro. The design results provide that the zoom system has the small size, high resolution, excellent image quality and the smooth cam curve etc. © 2017 SPIE.

Number of references:19

Main heading:Optical systems

Controlled terms:Curve fitting - Diffraction - Image quality - Lenses - Macros - Optical design - Optical transfer function - Photonics - Pixels

Uncontrolled terms:Cam curve - Diffraction limits - Focal plane array detector - Modulation transfer function (MTF) - Optical-design software - VisSWIR - Wide-band - Zoom optical system

Classification code:723.1 Computer Programming - 741.1 Light/Optics - 741.3 Optical Devices and Systems - 921.6 Numerical Methods

Numerical data indexing:Percentage 5.00e+00%, Size 1.50e-05m

DOI:10.1117/12.2259866

Database:Compendex

Accession number:20173904206114

Title:A calibration mechanism based on worm drive for space telescope

Authors:Chong, Yaqin (1, 2); Li, Chuang (1); Xia, Siyu (1); Zhong, Peifeng (1, 2); Lei, Wang (1)

Author affiliation:(1) Xian Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, 17 Xinxi Road, Xian, Shaanxi; 710119, China; (2) University of Chinese Academy of Sciences, 19A Yuquan Road, Beijing; 100049, China

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

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:10339

Part number:1 of 1

Issue title:Pacific Rim Laser Damage 2017: Optical Materials for High-Power Lasers

Issue date:2017

Publication year:2017

Article number:103391S

Language:English

ISSN:0277786X

E-ISSN:1996756X

CODEN:PSISDG

ISBN-13:9781510611238

Document type:Conference article (CA)

Conference name:Pacific Rim Laser Damage 2017: Optical Materials for High-Power Lasers

Conference date:May 21, 2017 - May 24, 2017

Conference location:Shanghai, China

Conference code:130514

Publisher:SPIE

Abstract:In this paper, a new type of calibration mechanism based on worm drive is presented for a space telescope. This calibration mechanism based on worm drive has the advantages of compact size and self-lock. The mechanism mainly consists of thirty-six LEDs as the light source for flat calibration, a diffuse plate, a step motor, a worm gear reducer and a potentiometer. As the main part of the diffuse plate, a PTFE tablet is mounted in an aluminum alloy frame. The frame is fixed on the shaft of the worm gear, which is driven by the step motor through the worm. The shaft of the potentiometer is connected to that of the worm gear to measure the rotation angle of the diffuse plate through a flexible coupler. Firstly, the calibration mechanism is designed, which includes the LEDs assembly design, the worm gear reducer design and the diffuse plate assembly design. The counterweight blocks and two end stops are also designed for the diffuse plate assembly. Then a modal analysis with finite element method for the diffuse plate assembly is completed. © 2017 SPIE.

Number of references:8

Main heading:Finite element method

Controlled terms:Aluminum alloys - Assembly - Calibration - High power lasers - Laser damage - Light emitting diodes - Modal analysis - Optical materials - Potentiometers (electric measuring instruments) - Potentiometers (resistors) - Space telescopes - Speed reducers - Stepping motors - Worm gears

Uncontrolled terms:Assembly designs - Compact size - counterweigh block - Gear reducers - Mechanism-based - Plate assemblies - Rotation angles - Self locks

Classification code:541.2 Aluminum Alloys - 601.2 Machine Components - 602 Mechanical Drives and Transmissions - 704.1 Electric Components - 705.3 Electric Motors - 714.2 Semiconductor Devices and Integrated Circuits - 741.3 Optical Devices and Systems - 744.1 Lasers, General - 744.8 Laser Beam Interactions - 921 Mathematics - 921.6 Numerical Methods - 942.1 Electric and Electronic Instruments

DOI:10.1117/12.2269878

Database:Compendex

Accession number:20160902031393

Title:Coarse-to-Fine Learning for Single-Image Super-Resolution

Authors:Zhang, Kaibing (1); Tao, Dacheng (2); Gao, Xinbo (3); Li, Xuelong (4); Li, Jie (5)

Author affiliation:(1) School of Computer and Information Science, Hubei Engineering University, Xiaogan, Hubei; 432000, China; (2) Centre for Quantum Computation and Intelligent Systems, Faculty of Engineering and Information Technology, University of Technology Sydney, 81 Broadway Street, Ultimo; NSW; 2007, Australia; (3) State Key Laboratory of Integrated Services Networks, School of Electronic Engineering, Xidian University, Xi'an, Shaanxi; 710071, China; (4) 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; (5) Video and Image Processing System Laboratory, School of Electronic Engineering, Xidian University, Xi'an, Shaanxi; 710071, China

Corresponding author:Zhang, Kaibing

Source title:IEEE Transactions on Neural Networks and Learning Systems

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

Volume:28

Issue:5

Issue date:May 2017

Publication year:2017

Pages:1109-1122

Article number:7412770

Language:English

ISSN:2162237X

E-ISSN:21622388

Document type:Journal article (JA)

Publisher:Institute of Electrical and Electronics Engineers Inc.

Abstract:This paper develops a coarse-to-fine framework for single-image super-resolution (SR) reconstruction. The coarse-to-fine approach achieves high-quality SR recovery based on the complementary properties of both example learning-and reconstruction-based algorithms: example learning-based SR approaches are useful for generating plausible details from external exemplars but poor at suppressing aliasing artifacts, while reconstruction-based SR methods are propitious for preserving sharp edges yet fail to generate fine details. In the coarse stage of the method, we use a set of simple yet effective mapping functions, learned via correlative neighbor regression of grouped low-resolution (LR) to high-resolution (HR) dictionary atoms, to synthesize an initial SR estimate with particularly low computational cost. In the fine stage, we devise an effective regularization term that seamlessly integrates the properties of local structural regularity, nonlocal self-similarity, and collaborative representation over relevant atoms in a learned HR dictionary, to further improve the visual quality of the initial SR estimation obtained in the coarse stage. The experimental results indicate that our method outperforms other state-of-the-art methods for producing high-quality images despite that both the initial SR estimation and the followed enhancement are cheap to implement. © 2012 IEEE.

Number of references:42

Main heading:Image enhancement

Controlled terms:Optical resolving power

Uncontrolled terms:Correlative neighbor regression (CNR) - Non-local means - Regularization terms - Self-similarities - Single images

Classification code:741.1 Light/Optics

DOI:10.1109/TNNLS.2015.2511069

Database:Compendex

Accession number:20181104902971

Title:Novel frontiers in the stabilization of FD-FWM microcombs

Authors:Bao, Hualong (1); Cooper, Andrew (1); Chu, Sai T. (2); Moss, David J. (3); Morandotti, Roberto (4); Little, Brent E. (5); Peccianti, Marco (1); Pasquazi, Alessia (1)

Author affiliation:(1) Emergent Photonics Lab, Dept. of Physics and Astronomy, University of Sussex, BN1 9QH, United Kingdom; (2) City University of Hong Kong, Tat Chee Avenue, Hong Kong, Hong Kong; (3) Swinburne University of Technology, Hawthorn; VIC; 3122, Australia; (4) INRS-EMT, 1650 Boulevard Lionel-Boulet, Varennes; QC; J3X 1S2., Canada; (5) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Science, Xi'an, China

Source title:ICOCN 2017 - 16th International Conference on Optical Communications and Networks

Abbreviated source title:ICOCN - Int. Conf. Optical Commun. Networks

Volume:2017-January

Part number:1 of 1

Issue title:ICOCN 2017 - 16th International Conference on Optical Communications and Networks

Issue date:November 27, 2017

Publication year:2017

Pages:1-3

Language:English

ISBN-13:9781538632734

Document type:Conference article (CA)

Conference name:16th International Conference on Optical Communications and Networks, ICOCN 2017

Conference date:August 7, 2017 - August 10, 2017

Conference location:Wuzhen, China

Conference code:133380

Publisher:Institute of Electrical and Electronics Engineers Inc.

Abstract:In this contribution, we will review our recent activities in the development of double nested cavity lasers. Several stable operating regimes can be achieved over a wide range of conditions. © 2017 IEEE.

Number of references:7

Main heading:Resonators

Controlled terms:Optical communication

Uncontrolled terms:Cavity lasers - Micro resonators - Microcombs - Operating regimes - Optical frequency combs

Classification code:717.1 Optical Communication Systems

DOI:10.1109/ICOCN.2017.8121593

Database:Compendex

Accession number:20172203698751

Title:Meter-scale thin film coating equipment based on meniscus-coating technology

Authors:Xu, Jia (1); Xu, Wen-Bin (1); Bu, He-Yang (1); Lu, Zheng-Wu (1); Liu, Zheng-Kun (2); Hong, Yi-Lin (2); Yu, Wei-Xing (3)

Author affiliation:(1) Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun; 130033, China; (2) University of Science and Technology of China, Hefei; 230026, China; (3) Key Laboratory of Spectral Imaging Technology of CAS, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Changchun; 710119, China

Corresponding author:Yu, Wei-Xing(yuwx@opt.ac.cn)

Source title:Guangxue Jingmi Gongcheng/Optics and Precision Engineering

Abbreviated source title:Guangxue Jingmi Gongcheng

Volume:25

Issue:1

Issue date:January 1, 2017

Publication year:2017

Pages:133-140

Language:Chinese

ISSN:1004924X

CODEN:GJGOF4

Document type:Journal article (JA)

Publisher:Chinese Academy of Sciences

Abstract:The meniscus chemical coating technology becomes a very promising new chemical thin-film coating technology after traditional coating technologies such as spin-coating and spray coating due to its merits of large area, low-cost and high efficiency. To meet the requirements of one national major projects on the meter-scale chemical thin film coating of optical component surface, based on the systematical research of the meniscus chemical film coating principal, static and dynamic gluing experiments were respectively conducted, and the relationships among the gluing pressure, the gap between substrate and slit, the material hydrophobicity and the morphology of meniscus were analyzed, then the fine tuning of the meniscus could be achieved and equipment based on the meniscus chemical thin film coating technology was developed. The coating uniformity of photo-resist was realized using this equipment on the glass substrate sizing 1400 mm×420 mm, making overall coating thickness error less than 4% and satisfying coating requirements of meter-scale chemical precision thin film coating of optical component surface. © 2017, Science Press. All right reserved.

Number of references:25

Main heading:Optical films

Controlled terms:Chemical analysis - Chemical equipment - Coating techniques - Coatings - Film thickness - Gluing - Substrates - Thickness measurement - Thin films

Uncontrolled terms:Chemical coatings - Large area - Liquid level - Meniscus - Optical components

Classification code:741.3 Optical Devices and Systems - 802.1 Chemical Plants and Equipment - 813.1 Coating Techniques - 813.2 Coating Materials - 943.2 Mechanical Variables Measurements

Numerical data indexing:Percentage 4.00e+00%

DOI:10.3788/OPE.20172501.0133

Database:Compendex

Accession number:20172203698744

Title:Radiometric calibration of photographic camera with a composite plane array CCD in laboratory

Authors:Li, Jing (1); Zhao, Jian-Ke (1); Chang, Ming (1); Hu, Xin-Rong (1)

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

Corresponding author:Li, Jing(lijing@opt.ac.cn)

Source title:Guangxue Jingmi Gongcheng/Optics and Precision Engineering

Abbreviated source title:Guangxue Jingmi Gongcheng

Volume:25

Issue:1

Issue date:January 1, 2017

Publication year:2017

Pages:73-83

Language:Chinese

ISSN:1004924X

CODEN:GJGOF4

Document type:Journal article (JA)

Publisher:Chinese Academy of Sciences

Abstract:To eliminate the serious vignetting phenomenon and to solve the difficulty of choosing a relatively positioning target value problems among CCDs during the radiometric calibration of the whole image plane of the photographic camera with a composite plane array CCD, a method for radiometric calibration of multi-CCDs was proposed. After the dark signal calibration on each pixel, the gray value of the pixel in the vignetting area was revised, and by choosing the appropriate relative calibration target gray value of the whole image plane, the radiometric calibration of the photographic camera with a composite plane array CCD was eventually completed. Through analysis of the gray distribution characteristics of vignetting area, the gray correction method for all kinds of explosion time and radiance was proposed. With calculation of fitting coefficient between each CCD gray value and the input radiance respectively, the coefficient with global minimum fitting error was chosen to calculate the relative calibration target gray value corresponding to radiance. After the radiometric calibration using this method, the non-uniformity of the whole image plane of the photographic camera with a composite plane array CCD is reduced from above 20% to better than 2%, and the accuracy of the absolute calibration is 4.23%. The result indicates that the proposed calibration method is appropriate for the calibration of composite planes array CCD. The accuracy of the calibration satisfies the radiometric calibration requirement of aerial cameras. © 2017, Science Press. All right reserved.

Number of references:15

Main heading:Calibration

Controlled terms:Antennas - CCD cameras - Pixels - Radiometry

Uncontrolled terms:Absolute calibration - Array CCD - Fitting coefficient - Non-uniformities - Photographic camera - Radiometric calibrations - Relative calibrations - Vignetting

Classification code:714.2 Semiconductor Devices and Integrated Circuits - 944.8 Radiation Measurements

Numerical data indexing:Percentage 2.00e+00%, Percentage 4.23e+00%

DOI:10.3788/OPE.20172501.0073

Database:Compendex

Accession number:20181605019536

Title:A parallel linearized ADMM with application to multichannel tgv-based image restoration

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

Author affiliation:(1) High-tech Institute of xi'An, China; (2) Xian Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, China

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

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

Volume:2017-September

Part number:1 of 1

Issue title:2017 IEEE International Conference on Image Processing, ICIP 2017 - Proceedings

Issue date:July 2, 2017

Publication year:2017

Pages:1187-1191

Language:English

ISSN:15224880

ISBN-13:9781509021758

Document type:Conference article (CA)

Conference name:24th IEEE International Conference on Image Processing, ICIP 2017

Conference date:September 17, 2017 - September 20, 2017

Conference location:Beijing, China

Conference code:134723

Sponsor:The Institute of Electrical and Electronics Engineers Signal Processing Society

Publisher:IEEE Computer Society

Abstract:A parallel linearized alternating direction method of multipliers (PLADMM) is proposed to solve large-scale imaging inverse problems, which involve the sum of several linear-operator-coupled nonsmooth terms. In the proposed method, the proximity operators of the nonsmooth terms are called individually at each iteration and the auxiliary variables existing in the classical ADMM are excluded. Therefore, the proposed method possesses a highly parallel structure and most of its substeps can be executed simultaneously. The application to multichannel total generalized variation (TGV) based image restoration shows the effectiveness of the proposed method. © 2017 IEEE.

Number of references:16

Main heading:Image reconstruction

Controlled terms:Inverse problems - Iterative methods - Linearization - Mathematical operators - Restoration

Uncontrolled terms:Alternating direction method of multipliers - Auxiliary variables - Generalized variation - Highly parallels - Linear operators - Nonsmooth optimization - PLADMM - Proximity operator

Classification code:921.6 Numerical Methods

DOI:10.1109/ICIP.2017.8296469

Database:Compendex

Accession number:20174504368393

Title:Transmit-receive Isolation Analysis and Test of Cassegrain Optical Antenna

Authors:Xia, Fang-Yuan (1, 2, 3); Yang, Jian-Feng (1); Yao, Zhou-Shi (3); Li, Shuai (3); Wang, Bo (3); Chen, Xiang (3)

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) Xi'an Institute of SPACE Radio Technology, Xi'an; 710100, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:46

Issue:10

Issue date:October 1, 2017

Publication year:2017

Article number:1023001

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:Two schemes such as single pixel signal to noise ratio and extinction ratio are used to evaluate transmit-receive isolation ability based on the practical application of the tracking and communication detector in laser communication system. A method to inhibit the back scattering light was presented which boring a hole in the secondary mirror and increasing light trap. It is derived that when aperture ratio of secondary mirror K is 0.1~0.3, it dose not affect the emission efficiency, the measured results show that the improved Cassegrain optical antenna Transmit-Receive isolation is lower than -40 dB while not affecting the emission efficiency of system, and meet the requirements of laser communication system acquiring, tracking and communication. © 2017, Science Press. All right reserved.

Number of references:13

Main heading:Optical communication

Controlled terms:Antennas - Backscattering - Efficiency - Integrated optics - Laser mirrors - Light extinction - Optical instruments - Signal to noise ratio - Stray light

Uncontrolled terms:Aperture ratio - Cassegrain optical antennas - Emission efficiencies - Extinction ratios - Isolation - Isolation analysis - Measured results - Secondary mirror

Classification code:716.1 Information Theory and Signal Processing - 717.1 Optical Communication Systems - 741.1 Light/Optics - 741.3 Optical Devices and Systems - 913.1 Production Engineering - 941.3 Optical Instruments

Numerical data indexing:Decibel -4.00e+01dB

DOI:10.3788/gzxb20174610.1023001

Funding details: Number: 61231012, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;

Funding text:The National Natural Science Foundation of China (No.61231012).

Database:Compendex

Accession number:20161402198767

Title:Joint Dictionary Learning for Multispectral Change Detection

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

Source title:IEEE Transactions on Cybernetics

Abbreviated source title:IEEE Trans. Cybern.

Volume:47

Issue:4

Issue date:April 2017

Publication year:2017

Pages:884-897

Article number:7422756

Language:English

ISSN:21682267

Document type:Journal article (JA)

Publisher:Institute of Electrical and Electronics Engineers Inc.

Abstract:Change detection is one of the most important applications of remote sensing technology. It is a challenging task due to the obvious variations in the radiometric value of spectral signature and the limited capability of utilizing spectral information. In this paper, an improved sparse coding method for change detection is proposed. The intuition of the proposed method is that unchanged pixels in different images can be well reconstructed by the joint dictionary, which corresponds to knowledge of unchanged pixels, while changed pixels cannot. First, a query image pair is projected onto the joint dictionary to constitute the knowledge of unchanged pixels. Then reconstruction error is obtained to discriminate between the changed and unchanged pixels in the different images. To select the proper thresholds for determining changed regions, an automatic threshold selection strategy is presented by minimizing the reconstruction errors of the changed pixels. Adequate experiments on multispectral data have been tested, and the experimental results compared with the state-of-the-art methods prove the superiority of the proposed method. Contributions of the proposed method can be summarized as follows: 1) joint dictionary learning is proposed to explore the intrinsic information of different images for change detection. In this case, change detection can be transformed as a sparse representation problem. To the authors' knowledge, few publications utilize joint learning dictionary in change detection; 2) an automatic threshold selection strategy is presented, which minimizes the reconstruction errors of the changed pixels without the prior assumption of the spectral signature. As a result, the threshold value provided by the proposed method can adapt to different data due to the characteristic of joint dictionary learning; and 3) the proposed method makes no prior assumption of the modeling and the handling of the spectral signature, which can be adapted to different data. © 2017 IEEE.

Number of references:59

Main heading:Image reconstruction

Controlled terms:Errors - Pixels - Remote sensing

Uncontrolled terms:Automatic threshold selection - Change detection - Dictionary learning - Multi-temporal remote sensing - Remote sensing technology - Sparse representation - Spectral information - State-of-the-art methods

DOI:10.1109/TCYB.2016.2531179

Database:Compendex

Accession number:20170803367452

Title:Secrecy-Optimized Resource Allocation for Device-to-Device Communication Underlaying Heterogeneous Networks

Authors:Zhang, Kecheng (1); Peng, Mugen (1); Zhang, Ping (2); Li, Xuelong (3)

Author affiliation:(1) Key Laboratory of Universal Wireless Communications, Ministry of Education, Beijing University of Posts and Telecommunications, Beijing; 100876, China; (2) State Key Laboratory of Networking and Switching Technology, Beijing University of Posts and Telecommunications, Beijing; 100876, 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; 710119, China

Corresponding author:Peng, Mugen(pmg@bupt.edu.cn)

Source title:IEEE Transactions on Vehicular Technology

Abbreviated source title:IEEE Trans. Veh. Technol.

Volume:66

Issue:2

Issue date:February 2017

Publication year:2017

Pages:1822-1834

Article number:7467574

Language:English

ISSN:00189545

CODEN:ITVTAB

Document type:Journal article (JA)

Publisher:Institute of Electrical and Electronics Engineers Inc.

Abstract:Device-to-device (D2D) communications have recently attracted much attention for the potential capability to improve spectral efficiency (SE) underlaying the existing heterogeneous networks (HetNets). Due to no sophisticated control, D2D-worked user equipments (DUEs) themselves cannot resist eavesdropping or security attacks. It is urgent to maximize the secure capacity for both cellular users and DUEs. This paper formulates the radio resource-allocation problem to maximize the secure capacity of DUEs for D2D communication underlaying HetNets, which consist of high-power nodes (HPNs) and low-power nodes (LPNs). The optimization objective function with transmit bit rate and power constraints, which is nonconvex and hard to directly derive, is first transformed into a matrix form. Then, the equivalent convex form of the optimization problem is derived according to Perron-Frobenius theory. A heuristic iterative algorithm based on the proximal theory is proposed to solve this equivalent convex problem through evaluating the proximal operator of the Lagrange function. Numerical results show that the proposed radio resource-allocation solution significantly improves the secure capacity with a fast convergence speed. © 2016 IEEE.

Number of references:26

Main heading:Network security

Controlled terms:Heterogeneous networks - Iterative methods - Optimization - Resource allocation

Uncontrolled terms:Device-to-Device communications - Deviceto-device (D2D) communication - Heterogeneous Network (HetNet) - Heterogeneous network (HetNets) - Heuristic iterative algorithms - Optimization objective function - Radio resource allocation - Secure capacity

Classification code:723 Computer Software, Data Handling and Applications - 912.2 Management - 921.5 Optimization Techniques - 921.6 Numerical Methods

DOI:10.1109/TVT.2016.2566298

Funding details: Number: 2014AA01A701, Acronym: -, Sponsor: -;Number: 2016ZX03001020-006, Acronym: -, Sponsor: -;Number: 61271198, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61361166005, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: KZ201511232036, Acronym: -, Sponsor: Beijing Municipal Commission of Education;

Funding text:This work was supported in part by the National High Technology Research and Development Program of China under Grant 2014AA01A701, by the National Natural Science Foundation of China under Grant 61361166005 and Grant 61271198, by the Science and Technology Development Project of Beijing Municipal Education Commission of China under Grant KZ201511232036, by the National Program for Support of Top-notch Young Professionals, and by the State Major Science and Technology Special Projects under Grant 2016ZX03001020-006.

Database:Compendex

Accession number:20180404670997

Title:Taylor series-based generic demosaicking algorithm for multispectral image

Authors:Tonghan, Jia (1, 2); Zhang, Geng (1); Liu, Xuebin (1)

Author affiliation:(1) Xi'an Institute Optics and Precision Mechanics, Chinese Academy of Sciences, 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:10462

Part number:1 of 1

Issue title:AOPC 2017: Optical Sensing and Imaging Technology and Applications

Issue date:2017

Publication year:2017

Article number:1046237

Language:English

ISSN:0277786X

E-ISSN:1996756X

CODEN:PSISDG

ISBN-13:9781510614055

Document type:Conference article (CA)

Conference name:Applied Optics and Photonics China: Optical Sensing and Imaging Technology and Applications, AOPC 2017

Conference date:June 4, 2017 - June 6, 2017

Conference location:Beijing, China

Conference code:133396

Sponsor:Chinese Society for Optical Engineering; The Society of Photo-Optical Instrumentation Engineers (SPIE)

Publisher:SPIE

Abstract:Using coated mosaic video spectrometer to collect multispectral image which reduce the spectral information redundancy and data volume greatly and achieve real-Time data transmission conditions. The mosaic video spectrometer imaging technique use a similar mosaic template to capture all the pixels and output a two-dimensional multi-spectral image with dozens of spectral information. The image is divided into a certain size of matrix in its field, and each pixel in the pixel matrix is only for one wavelength information response and every pixel response for different wavelength. The size of the pixel matrix block depends on the number of spectral segments, which results in a low spatial resolution of the single spectral segment image and the spectral information of each pixel absenting severely. Therefore, to reconstruct the complete multi-spectral image, we must estimate and interpolate the missing spatial information and spectral information by demosaicking multispectral image. In this paper, we present a novel demosaicking method to produce the high resolution multispectral image and reconstruct missing spectrum information in high accuracy. The proposed method computes the first-And second-order derivatives of the original single multispectral image to measure the geometry of edges in the image and the spectrum value of missing pixel. Two metrics are used to evaluate the generic algorithm, including the structural similarity index-measurement system (SSIM) for reconstruction performance and the procession time. Experimental results show that the demosaicked images present higher SSIM (more than 0.9) and comparable calculated time performance as traditional ways. This algorithm brings the greatest advantage that make up for the weakness of mosaick multispectral image and reduce the data transmission process cost and storage needs. © 2017 SPIE.

Number of references:12

Main heading:Pixels

Controlled terms:Computer programming - Computerized tomography - Data transfer - Digital storage - Image reconstruction - Image segmentation - Matrix algebra - Spectrometers - Spectroscopy

Uncontrolled terms:Demosaicking - Mosaic template - Multispectral images - Real time data transmission - Second order derivatives - Spatial informations - Spectrum information - Structural similarity indices

Classification code:722.1 Data Storage, Equipment and Techniques - 723.1 Computer Programming - 723.5 Computer Applications - 741.3 Optical Devices and Systems - 921.1 Algebra

DOI:10.1117/12.2285052

Funding details: Number: -, Acronym: CAAS, Sponsor: Chinese Academy of Agricultural Sciences;Number: 61501456, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;

Funding text:This work was supported by the National Natural Science Foundation of China (No. 61501456) and "Light of West China" Program of Chinese Academy of Science.

Database:Compendex

Accession number:20180404671009

Title:Automatic detection of cloud in high-resolution remote sensing images based on adaptive SLIC and MFC

Authors:Kang, Chaomeng (1, 2); Liu, Jiahang (1); Yu, Kai (1, 2); Lu, Zhuanli (1, 2)

Author affiliation:(1) 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:10462

Part number:1 of 1

Issue title:AOPC 2017: Optical Sensing and Imaging Technology and Applications

Issue date:2017

Publication year:2017

Article number:1046249

Language:English

ISSN:0277786X

E-ISSN:1996756X

CODEN:PSISDG

ISBN-13:9781510614055

Document type:Conference article (CA)

Conference name:Applied Optics and Photonics China: Optical Sensing and Imaging Technology and Applications, AOPC 2017

Conference date:June 4, 2017 - June 6, 2017

Conference location:Beijing, China

Conference code:133396

Sponsor:Chinese Society for Optical Engineering; The Society of Photo-Optical Instrumentation Engineers (SPIE)

Publisher:SPIE

Abstract:Reliable cloud detection plays an important role in the manufacture of remote sensing and the alarm of natural calamities. However, it makes the task difficult with high-resolution remote sensing images with complex background and various types of clouds with different concentration, color and shapes. Related works mostly used gray, shape and texture features to detect clouds, which obtain results with poor robustness and efficiency. To detect cloud more automatically and robustly, we propose a novel could detection method based on the fusion of local optimum by adaptive simple linear iterative clustering (ASLIC) and the whole optimum by bilateral filtering with an improved saliency detection method. After this step, we trained a multi-feature fusion model based support vector machine(SVM) used geometric feature: fractal dimension index (FRAC) and independence index (IDD) which is proposed by us to describe the piece of region's spatial distribution, texture feature: We use four angles to calculate the gray-level co-occurrence matrix (GLXM) about entropy, energy, contrast, homogeneity, spectral feature(SF): After principal component analysis(PCA) we choose the first bond, the second bond and the near infrared bond(NIR). Besides, in view of the disturbance of water, ice, we also use NDVI and HOT index to estimate the model. Compared to the traditional methods of SLIC,our new method for cloud detection is accurate, and robust when dealing with clouds of different types and sizes over various land satellite images. © 2017 SPIE.

Number of references:31

Main heading:Remote sensing

Controlled terms:Adaptive optics - Fractal dimension - Infrared devices - Iterative methods - Learning systems - Principal component analysis - Support vector machines

Uncontrolled terms:Automatic Detection - Bilateral filtering - Cloud detection - Complex background - Gray level co-occurrence matrix - High resolution remote sensing images - Multi-feature fusion - Simple Linear Iterative Clustering

Classification code:723 Computer Software, Data Handling and Applications - 741.1 Light/Optics - 921 Mathematics - 921.6 Numerical Methods - 922.2 Mathematical Statistics

DOI:10.1117/12.2285505

Funding details:

Funding text:Acknowledgments: The authors would like to thank National Key Research and Development Program through Grant

Database:Compendex

Accession number:20174204273360

Title:Nested grazing incidence optics for x ray detection

Authors:Li, Lin-Sen (1, 2, 3); Qiang, Peng-Fei (1, 3); Sheng, Li-Zhi (3); Liu, Yong-An (1, 3); Liu, Zhe (3); Liu, Duo (1, 3); Zhao, Bao-Sheng (3); Zhang, Chun-Min (2)

Author affiliation:(1) University of Chinese Academy of Sciences, Beijing; 100049, China; (2) School of Science, Xi'An Jiaotong University, Xi'an; 710119, China; (3) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Xi'an; 710119, China

Corresponding author:Qiang, Peng-Fei(qiangpengfei@opt.ac.cn)

Source title:Chinese Physics B

Abbreviated source title:Chin. Phys.

Volume:26

Issue:10

Issue date:October 2017

Publication year:2017

Article number:100703

Language:English

ISSN:16741056

E-ISSN:20583834

Document type:Journal article (JA)

Publisher:Institute of Physics Publishing

Abstract:Grazing incidence optics (GIO) is the most important compound in an x-ray detection system; it is used to concentrate the x-ray photons from outer space. A nested planar GIO for x-ray concentration is designed and developed by authors in this paper; planar segments are used as the reflection mirror instead of curved segments because of the simple process and low cost. After the complex assembling process with a special metal supporter, a final circle light spot of φ12 mm was obtained in the visible light testing experiment of GIO; the effective area of 1710.51 mm2@1 keV and 530 mm2@8 keV is obtained in the x-ray testing experiment with the GIO-SDD combination, which is supposed to be a concentrating detector in xray detection systems. © 2017 Chinese Physical Society and IOP Publishing Ltd.

Number of references:16

Main heading:X ray detectors

Controlled terms:Light - Metal testing - X rays

Uncontrolled terms:Assembling process - Effective area - Grazing incidence optics - Planar segments - Reflection mirrors - X ray photons - X-ray detection system - X-ray detections

Classification code:741.1 Light/Optics - 932.1 High Energy Physics

DOI:10.1088/1674-1056/26/10/100703

Funding details: Number: SKLGIE2014-M-2-1, Acronym: -, Sponsor: -;Number: 61471357, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: -, Acronym: CAS, Sponsor: Chinese Academy of Sciences;

Funding text:？Project supported by the National Natural Science Foundation of China (Grant No. 61471357) and the State Key Laboratory of Geo-Information Engineering Foundation (Grant No. SKLGIE2014-M-2-1). ？Corresponding author. E-mail: qiangpengfei@opt.ac.cn

Database:Compendex

Accession number:20172503802226

Title:Analysis of the influence of diattenuation on optical imaging system by using the theory of vector plane wave spectrum

Authors:Zhang, Min-Rui (1, 2); He, Zheng-Quan (1); Wang, Tao (1); Tian, Jin-Shou (1)

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:Zhang, Min-Rui(m_rzhang@163.com)

Source title:Wuli Xuebao/Acta Physica Sinica

Abbreviated source title:Wuli Xuebao

Volume:66

Issue:8

Issue date:April 20, 2017

Publication year:2017

Article number:084202

Language:Chinese

ISSN:10003290

CODEN:WLHPAR

Document type:Journal article (JA)

Publisher:Institute of Physics, Chinese Academy of Sciences

Abstract:In most of the researches of polarization aberration, the influence of diattenuation is not large enough to affect imaging quality evidently. However, the modulation transfer function decreases when optical elements with complex planar dielectric structures and low transmittance, such as beam-splitter and optical modulator, are introduced into an imaging system. In this paper, a vector optical model in Descartes coordinate system is proposed based on the concept of vector plane wave spectrum (VPWS). The results of calculation show that the VPWS model is consistent with Debye model. Compared with Debye vector diffraction integral, the VPWS method is more suitable to the description of the PA introduced by planar optical device with opaque mask, such as larger surface quantum-confined-stark-effect electro-absorption modulator, which is used to modulate the light collected by optical antenna of time-of-flight (TOF) depth system or modulating-retroreflector free-space-optical communication system. In order to simplify the calculation and obtain the conclusion of the change in imaging quality directly, the formula of optical transfer function is decomposed into three parts (TE component, TM component and the correlation of them) instead of polynomial expansion of pupil function. The influences of diattenuation on MTF is studied globally and locally in a range of cut-off frequency of optical imaging system (2NA/λ). Allowance of diattenuation is analysed by numerical calculation, and a mathematical expression is derived. The result shows that the change of diattenuation can be neglected when the spatial frequency v is less than 0.2NA/λ, and the range of allowance decreases with the increase of spatial frequency. According to numerical calculation shown in Fig.7 and the derived formulas (15) and (16), the ratios of reflection/transmission coefficient of s-light and p-light √D<inf>α</inf>should range respectively from 0.63 to 1.6(0.2NA/λ < v < 0.8NA/λ) and from 0.9 to 1.11(v>0.8NA/λ ) when the MTF is required to be not less than 90% of the value in ideal diffraction-limited system. The range of allowance becomes larger gradually with the increase of angle θ<inf>n</inf>between the normal of optical interface n and the optical axis of imaging system z. If a polarization beam splitter is considered, √D<inf>α</inf>→∞,θ<inf>n</inf>sin-1NA should be greater than 1-3. © 2017 Chinese Physical Society.

Number of references:23

Main heading:Optical communication

Controlled terms:Antennas - Diffraction - Elastic waves - Electric current control - Free flight - Imaging systems - Light - Light modulators - Modulation - Optical beam splitters - Optical correlation - Optical image storage - Optical instruments - Optical signal processing - Optical transfer function - Polarization - Prisms - Semiconductor quantum wells - Transfer functions - Vector spaces - Vectors

Uncontrolled terms:Diffraction-limited systems - Free space optical communication systems - Mathematical expressions - Modulating retro-reflectors - Planar optical devices - Polarization aberration - Polarization beam splitters - Quantum confined stark effect

Classification code:651.1 Aerodynamics, General - 714.2 Semiconductor Devices and Integrated Circuits - 717.1 Optical Communication Systems - 722.1 Data Storage, Equipment and Techniques - 731.3 Specific Variables Control - 741.1 Light/Optics - 741.3 Optical Devices and Systems - 746 Imaging Techniques - 921 Mathematics - 921.1 Algebra - 931.1 Mechanics - 941.3 Optical Instruments

Numerical data indexing:Percentage 9.00e+01%

DOI:10.7498/aps.66.084202

Funding details: Number: 11274377, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: ZDY2011-2, Acronym: -, Sponsor: -;

Funding text:Project supported by the National Natural Science Foundation of China (Grant No.11274377) and the State Major Research Equipment Project, China (Grant No. ZDY2011-2).

Database:Compendex

Accession number:20170103208641

Title:Electron optics design of an 8-in. spherical MCP-PMT

Authors:Chen, Ping (1, 2, 4); Tian, Jinshou (1, 4); Qian, Sen (3); Zhao, Tianchi (3); Liu, Hulin (1); Wei, Yonglin (1); Sai, Xiaofeng (1); He, Jianping (1); Wang, Xing (1); Lu, Yu (1); Chen, Lin (1, 2); Guo, Lehui (1, 2); Pei, Chengquan (1, 2); Hui, Dandan (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, Xi'an; 710119, China; (2) University of Chinese Academy of Sciences, Beijing; 100049, China; (3) Institute of High Energy Physics, Chinese Academy of Sciences, Beijing; 100049, China; (4) Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan; Shanxi; 030006, China

Corresponding author:Chen, Ping

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:848

Issue date:March 11, 2017

Publication year:2017

Pages:1-8

Language:English

ISSN:01689002

CODEN:NIMAER

Document type:Journal article (JA)

Publisher:Elsevier B.V.

Abstract:This paper discusses the electron optical system of an 8-in. spherical MCP-PMT. The MCP assembly, the supporting pole and the supply voltages are carefully designed to optimize the photoelectron collection efficiency and the transit time spread. Coating the MCP nickel-chromium electrode with an additional high secondary emission material is employed to make a breakthrough on the collection efficiency. With the simulation software CST, the Finite Integration method and the Monte Carlo method are combined to evaluate the collection efficiency, the time properties and the Earth's magnetic field effects. Simulation results show that the photocathode active solid angle is over 3.5 πsr, the average collection efficiency can exceed 95% with the coated MCP and the mean transit time spread is 2.2 ns for a typical electric potential of 500 V applied between the photocathode and the MCP input facet. The prototype and the measured single photoelectron spectrum are also presented. © 2016 Elsevier B.V.

Number of references:8

Main heading:Monte Carlo methods

Controlled terms:Computer software - Efficiency - Electric potential - Electrooptical effects - Magnetic field effects - Nickel coatings - Optical systems - Photocathodes - Photoelectron spectroscopy - Photoelectrons - Photomultipliers - Photons - Phototubes - Secondary emission

Uncontrolled terms:Collection efficiency - MCP-PMT - Photo multiplier tube - Secondary emission yield - Transit time spread

Classification code:701.1 Electricity: Basic Concepts and Phenomena - 701.2 Magnetism: Basic Concepts and Phenomena - 714.1 Electron Tubes - 723 Computer Software, Data Handling and Applications - 741.3 Optical Devices and Systems - 813.2 Coating Materials - 913.1 Production Engineering - 922.2 Mathematical Statistics - 931.3 Atomic and Molecular Physics

Numerical data indexing:Percentage 9.50e+01%, Size 2.03e-01m

DOI:10.1016/j.nima.2016.11.054

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

Funding text:The work is supported by a grant from the National Natural Science Foundation of China. [Grant no. 11305258].

Database:Compendex

Accession number:20173104014349

Title:A Method for Solving the Refractive Index Temperature Coefficient Empirical Formula Constants of Optical Glasses Based on 1st Opt

Authors:Ma, Zhi-Yuan (1); Wang, Peng-Fei (2); Wu, Zhi-Qiang (1); Wu, De-Lin (1); Su, Yong (1)

Author affiliation:(1) Test Technology Research Institute, CDGM GLASS Co., Ltd., Chengdu; 610000, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China

Corresponding author:Wang, Peng-Fei(pfwang@opt.ac.cn)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:46

Issue:6

Issue date:June 1, 2017

Publication year:2017

Article number:0616002

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:In order to solve the problem that large deviation of the refraction index and temperature coefficient of refraction index obtained by regression calculation from the experimentally measured ones comes out when ZEMAX method is used for solving these empirical formula constants and regression calculation, 1stOpt differential evolution was used to calculate the temperature coefficient of refraction index empirical formula constants. With fluoro-crown D-FK61 and flint H-TF3A optical glass as examples, the λ<inf>tk</inf>coefficients calculated by the proposed method are consistent with the general numerical range of 0.08~0.33, and the difference of refractive index and its temperature coefficient between the value obtained by regression calculation method and the measured value is less than 1×10-5and 2×10-7/℃, respectively. As an effective supplement of ZEMAX software to calculate the temperature coefficient of refractive index of the optical glasses, the proposed method greatly improves the accuracy and can provide accurate optical parameter guarantee for thermal compensation optical system design. © 2017, Science Press. All right reserved.

Number of references:16

Main heading:Refractive index

Controlled terms:Evolutionary algorithms - Numerical methods - Optical glass - Optical systems - Optimization - Refraction - Regression analysis - Temperature

Uncontrolled terms:Differential Evolution - Empirical formulas - Inorganic materials - Large deviations - Optical parameter - Refraction index - Temperature coefficient - Thermal compensation

Classification code:641.1 Thermodynamics - 741.1 Light/Optics - 741.3 Optical Devices and Systems - 921.5 Optimization Techniques - 921.6 Numerical Methods - 922.2 Mathematical Statistics

DOI:10.3788/gzxb20174606.0616002

Funding details: Number: 2016YFB0303805, Acronym: -, Sponsor: -;Number: 61307046, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;

Funding text:National Natural Science Foundation of China (No. 61307046) and State Key Research and Development Plan (No. 2016YFB0303805).

Database:Compendex

Accession number:20173404074971

Title:Normalized euclidean super-pixels for medical image segmentation

Authors:Liu, Feihong (1); Feng, Jun (1); Su, Wenhuo (2); Lv, Zhaohui (1); Xiao, Fang (1); Qiu, Shi (3)

Author affiliation:(1) School of Information and Technology, Northwest University, Xi’an, China; (2) Center for Nonlinear Studies, Department of Mathematicals, Northwest University, Xi’an, China; (3) Xi’an Institute of Optics and Precision Mechanics of CAS, Xi’an, China

Corresponding author:Feng, Jun(fengjun@nwu.edu.cn)

Source title:Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)

Abbreviated source title:Lect. Notes Comput. Sci.

Volume:10363 LNAI

Part number:3 of 3

Issue title:Intelligent Computing Methodologies - 13th International Conference, ICIC 2017, Proceedings

Issue date:2017

Publication year:2017

Pages:586-597

Language:English

ISSN:03029743

E-ISSN:16113349

ISBN-13:9783319633145

Document type:Conference article (CA)

Conference name:13th International Conference on Intelligent Computing, ICIC 2017

Conference date:August 7, 2017 - August 10, 2017

Conference location:Liverpool, United kingdom

Conference code:195469

Publisher:Springer Verlag

Abstract:We propose a super-pixel segmentation algorithm based on normalized Euclidean distance for handling the uncertainty and complexity in medical image. Benefited from the statistic characteristics, compactness within super-pixels is described by normalized Euclidean distance. Our algorithm banishes the balance factor of the Simple Linear Iterative Clustering framework. In this way, our algorithm properly responses to the lesion tissues, such as tiny lung nodules, which have a little difference in luminance with their neighbors. The effectiveness of proposed algorithm is verified in The Cancer Imaging Archive (TCIA) database. Compared with Simple Linear Iterative Clustering (SLIC) and Linear Spectral Clustering (LSC), the experiment results show that, the proposed algorithm achieves competitive performance over super-pixel segmentation in the state of art. © Springer International Publishing AG 2017.

Number of references:12

Main heading:Medical image processing

Controlled terms:Clustering algorithms - Image segmentation - Intelligent computing - Iterative methods - Medical imaging - Pixels

Uncontrolled terms:Competitive performance - Euclidean distance - Linear spectral - Local compactness - Segmentation algorithms - Simple Linear Iterative Clustering - Statistic characteristics - Uncertainty and complexity

Classification code:723.2 Data Processing and Image Processing - 723.4 Artificial Intelligence - 746 Imaging Techniques - 903.1 Information Sources and Analysis - 921.6 Numerical Methods

DOI:10.1007/978-3-319-63315-2_51

Funding details: Number: 61372046, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;

Funding text:This work was supported by National Natural Science Foundation of China (No. 61372046).

Database:Compendex

Accession number:20164703040835

Title:A robust stereo matching algorithm based on improved epipolar distance transformation

Authors:Yue, Qi (1, 2, 3); Ma, Caiwen (1); Cao, Xiaoqian (2, 3, 4)

Author affiliation:(1) Xi'an University of Posts and Telecommunications, Xi'an; 710121, China; (2) Xi'an Institute of Optics and Precision Mechanic, CAS, Xi'an; 710119, China; (3) University of Chinese Academy of Sciences, Beijing; 100039, China; (4) Shaanxi University of Science and Technology, Xi'an; 710021, China

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

Source title:Optik

Abbreviated source title:Optik

Volume:130

Issue date:February 1, 2017

Publication year:2017

Pages:91-98

Language:English

ISSN:00304026

Document type:Journal article (JA)

Publisher:Elsevier GmbH

Abstract:Aim to the problem of initial epipolar distance transformation algorithm is sensitive to illumination and depth discontinuous, an improved stereo matching algorithm is proposed. In Delta-Gama log-chromaticity space, Gamma correction coefficient is computed firstly according to raw disparity map which is used to Modified the similarity function bandwidth. Secondly, by employing image structure and color features, the segment of epipolar is obtained adaptively. At last, final disparity map is acquired by belief propagation method. Experimental results demonstrate the effectiveness of the proposed transform in illumination change regions and discontinuities regions. The matching rate of proposed algorithm is improved about 60%, comparing with the initial epipolar distance transformation algorithm and state-of-art algorithm such as ANCC(Adaptive Normalized Cross Correlation). © 2016 Elsevier GmbH

Number of references:13

Main heading:Stereo image processing

Controlled terms:Computer vision - Image segmentation - Stereo vision

Uncontrolled terms:Belief propagation - Distance transformation - Illumination changes - Normalized cross correlation - Radiometric varying - Similarity functions - Stereo matching - Stereo matching algorithm

Classification code:723.2 Data Processing and Image Processing - 723.5 Computer Applications

Numerical data indexing:Percentage 6.00e+01%

DOI:10.1016/j.ijleo.2016.11.054

Funding details: Number: 2010AA7080302, Acronym: -, Sponsor: -;Number: KGCX1-YW-16, Acronym: CAS, Sponsor: Chinese Academy of Sciences;Number: 61275134, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;

Funding text:This work is partially supported by National 863 high technology research and development program (No.: 2010AA7080302 ), Knowledge innovation project of Chinese Academy of Sciences (No. KGCX1-YW-16 ) and National Natural Science Foundation of China (No. 61275134 ).

Database:Compendex

Accession number:20171903655160

Title:1.5-MHz repetition rate passively Q-switched Nd:YVO<inf>4</inf>laser based on WS<inf>2</inf>saturable absorber

Authors:Wang, Xi (1, 2); Li, Lu (1, 2); Li, Jin-Ping (3); Wang, Yong-Gang (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) School of Physics and Information Technology, Shaanxi Normal University, Xi'an; 710119, China

Corresponding author:Wang, Yong-Gang(chinawygxjw@snnu.edu.cn)

Source title:Chinese Physics B

Abbreviated source title:Chin. Phys.

Volume:26

Issue:4

Issue date:April 2017

Publication year:2017

Article number:044203

Language:English

ISSN:16741056

E-ISSN:20583834

Document type:Journal article (JA)

Publisher:Institute of Physics Publishing

Abstract:A transmission-type tungsten disulfide (WS2)-based saturable absorber (SA) is fabricated and applied to passively Q-switched Nd:YVO<inf>4</inf>laser. The WS<inf>2</inf>nanosheets are deposited on a quartz substrate by the vertical evaporation method. By inserting the WS<inf>2</inf>SA into the plano-concave laser cavity, we achieve 153-ns pulses with an average output power of 1.19Wat 1064 nm. To the best of our knowledge, both of them are the best results among those obtained by the Q-switched solid-state lasers with WS2-based absorbers. The repetition rate ranges from 1.176 MHz to 1.578 MHz. As far as we know, it is the first time that MHz level Q-switched pulses have been generated in all solid state lasers based on low-dimensional materials so far. © 2017 Chinese Physical Society and IOP Publishing Ltd.

Number of references:44

Main heading:Solid state lasers

Controlled terms:Neodymium compounds - Optical materials - Q switched lasers - Q switching - Saturable absorbers - Single crystals - Sulfur compounds - Tungsten compounds

Uncontrolled terms:All solid-state lasers - Average output power - Evaporation method - Low-dimensional materials - Non-linear optical material - Passively Q-switched - Q-switched solid-state lasers - Tungsten disulfide

Classification code:741.3 Optical Devices and Systems - 744 Lasers - 933.1 Crystalline Solids

Numerical data indexing:Frequency 1.18e+06Hz to 1.58e+06Hz, Frequency 1.50e+06Hz, Size 1.06e-06m, Time 1.53e-07s

DOI:10.1088/1674-1056/26/4/044203

Funding details: Number: 61378024, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;

Funding text:Project supported by the National Natural Science Foundation of China (Grant No. 61378024).

Database:Compendex

Accession number:20170203239137

Title:A new kind of vertically aligned field emission transistor with a cylindrical vacuum channel

Authors:Shen, Zhihua (1); Wang, Xiao (1); Wu, Shengli (1); Tian, Jinshou (2)

Author affiliation:(1) Key Laboratory for Physical Electronics and Devices of the Ministry of Education, Xi'an Jiaotong University, Xi'an; 710049, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics of CAS, Xi'an; 710119, China

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

Source title:Vacuum

Abbreviated source title:Vacuum

Volume:137

Issue date:March 1, 2017

Publication year:2017

Pages:163-168

Language:English

ISSN:0042207X

CODEN:VACUAV

Document type:Journal article (JA)

Publisher:Elsevier Ltd

Abstract:This study investigated a vertically aligned field emission transistor with a cylindrical vacuum channel. The channel length of this proposed transistor can be precisely controlled and easily fabricated to be comparable to the mean free path of electrons in air so that the device can operate in the air without performance degradation. In the study, this vacuum transistor showed a low threshold voltage (1.2 V, 2.2 V, and 3.3 V) with a gate dielectric thickness of 10 nm, 15 nm, and 20 nm and a subthreshold slope of 1.1 V/dec. It was found that the vacuum channel radius should be no less than 20 nm, otherwise, severe performance degradation will appear due to the effect of the gate shield (leading to reduction of the anode current) and electron collision events with the dielectric layer (presenting reliability issues). This kind of vacuum transistor may have wide applications in extreme conditions such as high temperature and intense irradiation. © 2017

Number of references:25

Main heading:Transistors

Controlled terms:Field emission - Gate dielectrics - High temperature applications - Threshold voltage

Uncontrolled terms:Field emission transistors - Finite integration technique - Gate dielectric thickness - Low threshold voltage - Mean free path of electrons - Performance degradation - Vacuum channels - Vertically aligned

Classification code:701.1 Electricity: Basic Concepts and Phenomena - 714.2 Semiconductor Devices and Integrated Circuits

DOI:10.1016/j.vacuum.2017.01.002

Funding details: Number: 61275023, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 51271140, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;

Funding text:This work was supported by the National Natural Science Foundation of China (51271140, 61275023).

Database:Compendex

Accession number:20171303500899

Title:A hydrophobic and abrasion-resistant MgF<inf>2</inf>coating with an ultralow refractive index for double-layer broadband antireflective coatings

Authors:Cui, Xinmin (1, 2); Ding, Ruimin (1); Wang, Mengchao (1, 2); Wang, Conghui (1, 2); Zhang, Jing (1, 2); Wang, Jing (1, 2); Dong, Wensheng (3); Xu, Yao (4)

Author affiliation:(1) Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan; 030001, China; (2) University of Chinese Academy of Sciences, Beijing; 100049, China; (3) Key Laboratory of Applied Surface & Colloid Chemistry of Ministry of Education, Shaanxi Normal University, Shaanxi; 710119, China; (4) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Shaanxi; 710119, China

Corresponding author:Ding, Ruimin

Source title:Journal of Materials Chemistry C

Abbreviated source title:J. Mater. Chem. C

Volume:5

Issue:12

Issue date:2017

Publication year:2017

Pages:3088-3096

Language:English

ISSN:20507534

E-ISSN:20507526

CODEN:JMCCCX

Document type:Journal article (JA)

Publisher:Royal Society of Chemistry

Abstract:An ultralow-index top layer is a prerequisite to preparing high-performance broadband AR coatings. When coupled with hydrophobicity and the abrasion-resistance required in practical applications, the challenge becomes even greater. In this work, a MgF<inf>2</inf>AR coating was studied because of the low refractive index of MgF<inf>2</inf>and its easily realized strong adhesion through low-temperature heat treatment. In order to obtain an ultralow refractive index and endow the coating with hydrophobicity, we designed several experimental routes and finally adopted MTES/TEOS co-precursors to direct MgF<inf>2</inf>particles to form a honeycomb-like network structure without a template. A final refractive index of 1.15 and good hydrophobicity, with a water contact angle of 122°, were obtained using the MgF<inf>2</inf>-SiO<inf>2</inf>(CH<inf>3</inf>) coating. These superior properties were attributed to the incorporation of methyl groups, which not only endowed the coating with hydrophobicity, but also changed the original linear assembly of MgF<inf>2</inf>particles to a circular assembly. Using this hydrophobic ultralow-index coating as a top layer, a high-performance double-layer AR coating was fabricated with a high average transmittance of 99.43% in the wavelength range of 400-1000 nm, good abrasion-resistance, and damp heat resistance after a low-temperature heat treatment of 250 °C. This MgF<inf>2</inf>double-layer AR coating may be used in display devices or lenses. © The Royal Society of Chemistry.

Number of references:34

Main heading:Magnesium compounds

Controlled terms:Abrasion - Antireflection coatings - Display devices - Heat resistance - Heat treatment - Hydrophobicity - Low temperature operations - Refractive index - Silica - Temperature - Tribology - Wear resistance

Uncontrolled terms:Abrasion resistant - Anti reflective coatings - Broadband AR coatings - Low refractive index - Network structures - Ultralow refractive indices - Water contact angle - Wavelength ranges

Classification code:537.1 Heat Treatment Processes - 641.1 Thermodynamics - 722.2 Computer Peripheral Equipment - 741.1 Light/Optics - 813.2 Coating Materials - 931 Classical Physics; Quantum Theory; Relativity - 931.2 Physical Properties of Gases, Liquids and Solids - 951 Materials Science

Numerical data indexing:Percentage 9.94e+01%, Size 4.00e-07m to 1.00e-06m, Temperature 5.23e+02K

DOI:10.1039/c6tc05307f

Funding details: Number: -, Acronym: -, Sponsor: Shaanxi Normal University;Number: U1530148, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;

Funding text:The authors gratefully acknowledge the support from the Natural Science Foundation of China ?Project U1530148?. We also acknowledge the open fund of Key Laboratory of Applied Surface and Colloid Chemistry (Shaanxi Normal University).

Database:Compendex

Accession number:20173003982915

Title:Nanosecond pulse signals restoration via stochastic resonance in the Fabry-Perot cavity with graphene

Authors:Chang, Zheng (1, 3); Liu, Hongjun (1, 2); Huang, Nan (1); Wang, Zhaolu (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; 710119, China; (2) Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan, Shanxi; 030006, China; (3) University of Chinese Academy of Sciences, Beijing; 100049, China

Source title:EPJ Applied Physics

Abbreviated source title:EPJ Appl Phys

Volume:79

Issue:2

Issue date:August 1, 2017

Publication year:2017

Article number:20502

Language:English

ISSN:12860042

E-ISSN:12860050

CODEN:EPAPFV

Document type:Journal article (JA)

Publisher:EDP Sciences

Abstract:We investigate a technology for reconstructing nanosecond pulse noise hidden signals via stochastic resonance, which is based on optical bistability in the Fabry-Perot (F-P) cavity with graphene. The bistable properties are analyzed with different initial wavelengths and Fermi energies. The system is tunable and the bistable behavior of the output intensity can be accurately controlled to obtain a cross-correlation gain larger than 10 in a wide range of input signal-to-noise (SNR) ratio from 1:8 to 1:45. Meanwhile, the distortion of the output signal and the pulse tailing caused by the phase delay can be reduced to a negligible level. This work provides a potential method for detecting low-level or hidden pulse signals in various communication fields. © 2017 EDP Sciences.

Number of references:28

Main heading:Signal to noise ratio

Controlled terms:Circuit resonance - Fabry-Perot interferometers - Graphene - Magnetic resonance - Signal reconstruction - Stochastic systems

Uncontrolled terms:Communication fields - Cross correlations - Fabry-Perot cavity - Nanosecond pulse - Nanosecond pulse signal - Output intensity - Potential methods - Stochastic resonances

Classification code:701.2 Magnetism: Basic Concepts and Phenomena - 703.1 Electric Networks - 716.1 Information Theory and Signal Processing - 761 Nanotechnology - 804 Chemical Products Generally - 941.3 Optical Instruments - 961 Systems Science

DOI:10.1051/epjap/2017170145

Funding details: Number: 61505247, Acronym: -, Sponsor: National Aerospace Science Foundation of China;Number: 11604377, Acronym: -, Sponsor: National Aerospace Science Foundation of China;Number: 61275134, Acronym: -, Sponsor: National Aerospace Science Foundation of China;Number: QNLM2016ORP0111, Acronym: QNLM, Sponsor: Qingdao National Laboratory for Marine Science and Technology;

Funding text:This research is supported by the National Nature Science Foundation of China under Grant Nos. 61505247, 11604377 and 61275134, also financially supported by Qingdao National Laboratory for Marine Science and Technology (QNLM2016ORP0111).

Database:Compendex

Accession number:20181104893549

Title:Development of the electronics system prototype of the high-speed camera

Authors:Zheng, Yang (1, 2); Li, Ruimin (1, 2); Song, Zongxi (1)

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

Source title:Proceedings of 2017 IEEE 3rd Information Technology and Mechatronics Engineering Conference, ITOEC 2017

Abbreviated source title:Proc. IEEE Inf. Technol. Mechatronics Eng. Conf., ITOEC

Volume:2017-January

Part number:1 of 1

Issue title:Proceedings of 2017 IEEE 3rd Information Technology and Mechatronics Engineering Conference, ITOEC 2017

Issue date:November 27, 2017

Publication year:2017

Pages:1155-1159

Language:English

ISBN-13:9781509053629

Document type:Conference article (CA)

Conference name:3rd IEEE Information Technology and Mechatronics Engineering Conference, ITOEC 2017

Conference date:October 3, 2017 - October 5, 2017

Conference location:Chongqing, China

Conference code:133411

Sponsor:Chongqing Geeks Education Technology Co., Ltd; Chongqing Global Union Academy of Science and Technology; Global Union Academy of Science and Technology; IEEE Beijing Section

Publisher:Institute of Electrical and Electronics Engineers Inc.

Abstract:The high-speed camera is an imaging device that records a particular transient state or all of the high-speed processes. It can accurately record the transient process of the high-speed target in real time and thus allow us to achieve the purpose of analysis of high-speed process through the slow motion playback. So the high-speed camera becomes an important tool for the study of the transient phenomena. This paper presents the development of a high-speed imaging system, which was build based upon a CMOS (Complementary Metal Oxide Semiconductor) image sensor and a high density FPGA (Field Programmable Gate Array) and USB 3.0 (Universal Serial Bus 3.0). In this paper, the design methodology and the electronics system architecture are briefly discussed. Besides, the designs and implements are particularly depicted. Finally the experimental verification shows the correlated results. The system has the advantage of high frame rate, high resolution, high performance and flexibility. © 2017 IEEE.

Number of references:7

Main heading:High speed cameras

Controlled terms:CMOS integrated circuits - Field effect transistors - Field programmable gate arrays (FPGA) - Image sensors - Metals - MOS devices - Oxide semiconductors - Speed - System buses

Uncontrolled terms:CMOS (complementary metal oxide semiconductor) - CMOS image sensor - Experimental verification - Fpga(field programmable gate array) - High speed imaging systems - Transient phenomenon - Universal serial bus - USB3.0

Classification code:714.2 Semiconductor Devices and Integrated Circuits - 721.2 Logic Elements - 722.2 Computer Peripheral Equipment - 742.2 Photographic Equipment

DOI:10.1109/ITOEC.2017.8122537

Database:Compendex

Accession number:20181705047001

Title:A design of high-precision BLDCM drive with bus voltage protection

Authors:Lian, Xuezheng (1); Wang, Haitao (1); Xie, Meilin (1, 2); Huang, Wei (1); Li, Dawei (1); Jing, Feng (1)

Author affiliation:(1) Xi'An Institute of Optics and Precision Mechanics of CAS, Shaanxi, 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:10605

Part number:1 of 1

Issue title:LIDAR Imaging Detection and Target Recognition 2017

Issue date:2017

Publication year:2017

Article number:1060510

Language:English

ISSN:0277786X

E-ISSN:1996756X

CODEN:PSISDG

ISBN-13:9781510617063

Document type:Conference article (CA)

Conference name:LIDAR Imaging Detection and Target Recognition 2017

Conference date:July 23, 2017 - July 25, 2017

Conference location:Changchun, China

Conference code:133763

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

Publisher:SPIE

Abstract:In the application of space satellite turntable, the design of balance wheel is very necessary. To solve the acquisition precision of Brushless DC motor speed is low, and the encoder is also more complex, this paper improves the original hall signal measurement methods. Using the logic device to achieve the six frequency multiplication of hall signal, the signal is used as speed feedback to achieve speed closed-loop control and improve the speed stability. At the same time, in order to prevent the E.M.F of BLDC motor to raise the voltage of the bus bar when reversing or braking, and affect the normal operation of other circuit modules, the analog circuit is used to protect the bus bar voltage by the way of energy consumption braking. The experimental results are consistent with the theoretical design, and the rationality and feasibility of the frequency multiplication scheme and bus voltage protection scheme are verified. © 2017 SPIE.

Number of references:9

Main heading:Surge protection

Controlled terms:Braking - Brushless DC motors - Busbars - Electric drives - Electric motors - Energy utilization - Flywheels - Logic devices - Optical radar - Wheels

Uncontrolled terms:Balance wheels - BLDC motors - Bus voltage - Frequency multiplication - Normal operations - Space satellites - Speed closed-loop control - Theoretical design

Classification code:525.3 Energy Utilization - 601.1 Mechanical Devices - 601.2 Machine Components - 602 Mechanical Drives and Transmissions - 704 Electric Components and Equipment - 705.3 Electric Motors - 705.3.2 DC Motors - 716.2 Radar Systems and Equipment - 721.2 Logic Elements

DOI:10.1117/12.2286416

Database:Compendex

Accession number:20181104893726

Title:Embedded measurement system of two-dimensional autocollimator based on FPGA

Authors:Gao, Xiang (1); Hu, Xiaodong (2); Yang, Donglai (2); Zhang, Jian (3)

Author affiliation:(1) College of Physics and Information Technology, Shaanxi Normal University, Xi'an Beijing, China; (2) Xi'an Institute of Optics and Precision Mechanics, Academy of Sciences of China, Xi'an Beijing, China; (3) Beijing Institute of Control and Electronic Technology, Xi'an Beijing, China

Source title:Proceedings of 2017 IEEE 3rd Information Technology and Mechatronics Engineering Conference, ITOEC 2017

Abbreviated source title:Proc. IEEE Inf. Technol. Mechatronics Eng. Conf., ITOEC

Volume:2017-January

Part number:1 of 1

Issue title:Proceedings of 2017 IEEE 3rd Information Technology and Mechatronics Engineering Conference, ITOEC 2017

Issue date:November 27, 2017

Publication year:2017

Pages:304-308

Language:English

ISBN-13:9781509053629

Document type:Conference article (CA)

Conference name:3rd IEEE Information Technology and Mechatronics Engineering Conference, ITOEC 2017

Conference date:October 3, 2017 - October 5, 2017

Conference location:Chongqing, China

Conference code:133411

Sponsor:Chongqing Geeks Education Technology Co., Ltd; Chongqing Global Union Academy of Science and Technology; Global Union Academy of Science and Technology; IEEE Beijing Section

Publisher:Institute of Electrical and Electronics Engineers Inc.

Abstract:For the miniaturization of two-dimensional autocollimator, a method of using embedded measurement system instead of special host computer is presented. This system integrates CMOS image sensor's driving circuit, frame processing, adaptive exposure control, centroid subdivision and localization of cross, misalignment angle calculation, display driver and other functions within a FPGA chip, and the sampling image and measurement results are displayed through the TFTLCD mounted on the device body. The engineering prototype shows that the system has characters of high precision, high integration and high reliability. © 2017 IEEE.

Number of references:6

Main heading:Adaptive control systems

Controlled terms:Display devices - Field programmable gate arrays (FPGA) - Miniature instruments - Precision engineering

Uncontrolled terms:Autocollimators - CMOS image sensor - Driving circuits - Embedded - High reliability - Measurement system - Miniaturization - Misalignment angles

Classification code:721.2 Logic Elements - 722.2 Computer Peripheral Equipment - 731.1 Control Systems

DOI:10.1109/ITOEC.2017.8122304

Database:Compendex

Accession number:20171703607645

Title:Research on electromechanical resonance of two-axis tracking system

Authors:Zhao, Zhi-Ming (1); Xue, Ying-Jie (1); Zeng, Shu-Qin (1); Li, Zhi-Guo (2)

Author affiliation:(1) School of Mechanic and Electronic Engineering, Shaanxi University of Science and Technology, Xi'an; 710021, China; (2) Xi'an Institute of Optics and Precision Mechanics CAS, New Industrial Park, Xi'an Hi-Tech Industrial Development Zone, NO.17 Xinxi Road, 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:10256

Part number:1 of 1

Issue title:Second International Conference on Photonics and Optical Engineering

Issue date:2017

Publication year:2017

Article number:102561V

Language:English

ISSN:0277786X

E-ISSN:1996756X

CODEN:PSISDG

Document type:Conference article (CA)

Conference name:2nd International Conference on Photonics and Optical Engineering

Conference date:October 14, 2016

Conference location:Xi'an, China

Conference code:127345

Publisher:SPIE

Abstract:The multi-axes synchronous system about the spatial two-axis turntable is the key equipment for semi-physical simulation and test in aerospace. In this paper, the whole structure design of the turntable is created by using Solidworks, then putting the three-dimensional solid model into ANSYS to build the finite element model. The software ANSYS is used to do the simulation about the static and dynamic analysis of two-axis turntable. Based on the modal analysis, we can forecast the inherent frequencies and the mode of vibration during the launch conditions which is very important to the design and safety of the structure. © 2017 SPIE.

Number of references:6

Main heading:Finite element method

Controlled terms:Computer software - Modal analysis - Photonics - Tracking (position) - Vibration analysis

Uncontrolled terms:ANSYS - Electromechanical resonances - Inherent frequencies - Semi-physical simulations - Static and dynamic analysis - Synchronous system - Three-Dimensional Solid Modeling - Two-axis turntables

Classification code:723 Computer Software, Data Handling and Applications - 741.1 Light/Optics - 921 Mathematics - 921.6 Numerical Methods

DOI:10.1117/12.2257210

Funding details: Number: 14JK1107, Acronym: -, Sponsor: -;Number: -, Acronym: SUST, Sponsor: Shahjalal University of Science and Technology;Number: 51305246, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;

Funding text:This work is supported by the National Natural Science Foundation of China (No.51305246), Scientific Research Plan Projects of Shaanxi Education Department (No. 14JK1107) and the scientific research project of SUST (No.BJ13-07).

Database:Compendex

Accession number:20171503546583

Title:Flexible multifunction optical micro-manipulation technique based on PDMS chip

Authors:Liu, Kunshan (1); Xiao, Guangzong (1, 2); Chen, Xinlin (1); Hu, Shaomin (1); Luo, Hui (1)

Corresponding author:Xiao, Guangzong

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

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:10244

Part number:1 of 1

Issue title:International Conference on Optoelectronics and Microelectronics Technology and Application

Issue date:2017

Publication year:2017

Article number:1024421

Language:English

ISSN:0277786X

E-ISSN:1996756X

CODEN:PSISDG

ISBN-13:9781510609891

Document type:Conference article (CA)

Conference name:International Conference on Optoelectronics and Microelectronics Technology and Application 2016, OMTA 2016

Conference date:October 10, 2016 - October 12, 2016

Conference location:Shanghai, China

Conference code:127002

Sponsor:Chinese Academy of Engineering National; Chinese Society for Optical Engineering; Information and Electronic Engineering Faculty; National Natural Science Foundation of China

Publisher:SPIE

Abstract:Design a chip for flexible multifunction optical micro-manipulation based on elastomeric materials-PDMS. We realized the different motion types of microspheres, including stably capture, spiral motion and orbital rotation, by adjusting the input voltage of piezoceramics designed in PDMS Chip. Compared to conventional techniques, this PDMS chip based method does not require special optical properties of the microspheres to be manipulated. In addition, the technique was convenient and precise for dynamical adjustment of motion types without external influences. From these results, we verify that this multifunctional optical micro-manipulation technique of PDMS elastomeric materials can find potential applications for optical manipulation, including cost-effective on-chip diagnostics, optical sorting and optical binding, etc. © 2017 SPIE.

Number of references:17

Main heading:Optical properties

Controlled terms:Cost effectiveness - Elastomers - Microchannels - Microelectronics - Micromanipulators - Microspheres - Optoelectronic devices - Piezoelectric ceramics

Uncontrolled terms:Conventional techniques - Elastomeric materials - External influences - On-chip diagnostics - Optical manipulation - Optical micromanipulation - Optical sorting - Orbital rotations

Classification code:708.1 Dielectric Materials - 741.1 Light/Optics - 741.3 Optical Devices and Systems - 818.2 Elastomers - 911.2 Industrial Economics

DOI:10.1117/12.2261968

Funding details: Number: 61308058, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;

Funding text:The project was supported by the National Natural Science Foundation of China (61308058).

Database:Compendex

Accession number:20175004522978

Title:Single shot, three-dimensional fluorescence microscopy with a spatially rotating point spread function

Authors:Wang, Zhaojun (1, 2); Cai, Yanan (1, 2); Liang, Yansheng (1, 2); Zhou, Xing (1, 2); Yan, Shaohui (1); Dan, Dan (1); Bianco, Piero R. (3); Lei, Ming (1); Yao, Baoli (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) University at Buffalo, Department of Microbiology and Immunology, No. 12 Capen Hall, Buffalo; NY; 14214, United States

Source title:Biomedical Optics Express

Abbreviated source title:Biomed. Opt. Express

Volume:8

Issue:12

Issue date:December 1, 2017

Publication year:2017

Pages:5493-5506

Article number:#307480

Language:English

E-ISSN:21567085

Document type:Journal article (JA)

Publisher:OSA - The Optical Society

Abstract:A wide-field fluorescence microscope with a double-helix point spread function (PSF) is constructed to obtain the specimen’s three-dimensional distribution with a single snapshot. Spiral-phase-based computer-generated holograms (CGHs) are adopted to make the depth-of-field of the microscope adjustable. The impact of system aberrations on the double-helix PSF at high numerical aperture is analyzed to reveal the necessity of the aberration correction. A modified cepstrum-based reconstruction scheme is promoted in accordance with properties of the new double-helix PSF. The extended depth-of-field images and the corresponding depth maps for both a simulated sample and a tilted section slice of bovine pulmonary artery endothelial (BPAE) cells are recovered, respectively, verifying that the depth-of-field is properly extended and the depth of the specimen can be estimated at a precision of 23.4nm. This three-dimensional fluorescence microscope with a framerate-rank time resolution is suitable for studying the fast developing process of thin and sparsely distributed micron-scale cells in extended depth-of-field. © 2017 Optical Society of America.

Number of references:32

Main heading:Optical transfer function

Controlled terms:Endothelial cells - Fluorescence - Fluorescence microscopy - Microscopes

Uncontrolled terms:Aberration correction - Computer generated holograms - Developing process - Double-helix point-spread functions - Extended depth of field - High numerical apertures - Three-dimensional fluorescence microscopy - Three-dimensional fluorescences

Classification code:461.9 Biology - 741.1 Light/Optics - 741.3 Optical Devices and Systems - 931.4 Quantum Theory; Quantum Mechanics

Numerical data indexing:Size 2.34e-08m

DOI:10.1364/BOE.8.005493

Funding details: Number: 11474352, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61377008, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61522511, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 81427802, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: GM100156, Acronym: NIH, Sponsor: National Institutes of Health;

Funding text:This research was supported by the Natural Science Foundation of China (NSFC) (61522511, 81427802, 11474352, 61377008), the Natural Science Basic Research Plan in Shaanxi Province of China (Program No: 2016JZ020), and the National Institutes of Health Grant GM100156 to P. R. B.

Database:Compendex

Accession number:20172703873544

Title:Development of submicron high precision CFRP reflector

Authors:Xu, Liang (1); Xie, Yongjie (1); Ding, Jiaoteng (1); Wang, Yongjie (1); Ma, Zhen (1); Fan, Xuewu (1)

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

Corresponding author:Xu, Liang(liangx@opt.ac.cn)

Source title:27th International Symposium on Space Terahertz Technology, ISSTT 2016

Abbreviated source title:Int. Symp. Space Terahertz Technol., ISSTT

Part number:1 of 1

Issue title:27th International Symposium on Space Terahertz Technology, ISSTT 2016

Issue date:2017

Publication year:2017

Language:English

Document type:Conference article (CA)

Conference name:27th International Symposium on Space Terahertz Technology, ISSTT 2016

Conference date:April 12, 2016 - April 15, 2016

Conference location:Nanjing, China

Conference code:127936

Sponsor:Oxford Instruments; Rohde and Schwarz; Sumitomo Heavy Industries

Publisher:International Symposium on Space Terahertz Technology

Abstract:Antenna gain affected by reflector surface figure accuracy and dimension stability directly, so one of the most important tasks is how to ensure the surface precision and dimensional stability. It is hard to control surface precision for springback of metal, so carbon fibre reinforced polymer (CFRP) usually be adopted to fabricate high precision reflector. With the rapid development of electronic technology, especially millimetre and terahertz wave technology, the precision of reflector needed increasingly. A Φ300mm CFRP flat reflector is developed for process study. In order to improve the thermal stability, a special "all CFRP" structure adopted. Optical replica process used to realize surface modification of CFRP reflector blank, final surface figure accuracy RMS reaching 0.1μm, and roughness Ra reaching 2nm. Further thermal stability tests show that the thermal stability reaching 13nm/C. AΦ500mm CFRP aspherical reflector also fabricated, and surface accuracy reaching 0.4μm. The study is of certain reference value for the development of CFRP reflector in millimetre wave and terahertz wave band.

Number of references:5

Main heading:Terahertz waves

Controlled terms:Antennas - Carbon fiber reinforced plastics - Carbon fibers - Fiber reinforced plastics - Millimeter waves - Reflection - Stability - Surface treatment - Thermodynamic stability

Uncontrolled terms:Carbon fibre reinforced polymer - Dimension stability - Electronic technologies - Millimetre waves - Reflector surfaces - Surface accuracy - Surface figure accuracies - Surface precision

Classification code:641.1 Thermodynamics - 711 Electromagnetic Waves - 804 Chemical Products Generally - 817.1 Polymer Products

Numerical data indexing:Size 1.00e-07m, Size 2.00e-09m, Size 4.00e-07m

Database:Compendex

Accession number:20171603576231

Title:Optimization of the doughnut-shaped depletion spot in stimulated emission depletion microscopy

Authors:Cai, Yanan (1); Wang, Zhaojun (1); Liang, Yansheng (1); Yan, Shaohui (1); Dan, Dan (1); Yao, Baoli (1); Lei, Ming (1)

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

Corresponding author:Lei, Ming(leiming@opt.ac.cn)

Source title:Guangxue Xuebao/Acta Optica Sinica

Abbreviated source title:Guangxue Xuebao

Volume:37

Issue:3

Issue date:March 10, 2017

Publication year:2017

Article number:0318009

Language:Chinese

ISSN:02532239

CODEN:GUXUDC

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:Stimulated emission depletion microscopy (STED) is a powerful far-field technique for super-resolution optical imaging with a few tens even a few of nanometer spatial resolution, thus it is extensively used in investigation of cell biology and so on. The spatial resolution of STED highly depends on the intensity distribution of the doughnut-shaped depletion spot, near the objective focus. The polarization state of field has influence on focal intensity focused with high numerical aperture objective. The off-axis aberrations of microscopic system bring serious damage to the central symmetry of doughnut-shaped depletion spot. The influences of different polarization states of incidence vortex beam and aberrations of coma and astigmatism is of the optical system on the intensity profiles of doughnut-shaped depletion spot simulated by using the vectorial diffraction theory. In the experiment, the deformed depletion spot is optimized by utilizing a pure phase spatial light modulator to correct the aberrations of the optical system. A fluorescent nanoparticle is used as a probe to scan the focal region to obtain a high spatial resolution of intensity distribution. The measured results are in good agreement with those predicted by the vectorial diffraction theory. © 2017, Chinese Lasers Press. All right reserved.

Number of references:33

Page count:9

Main heading:Aberrations

Controlled terms:Cytology - Diffraction - Diffraction gratings - Image resolution - Light modulation - Light modulators - Microscopic examination - Optical resolving power - Optical systems - Polarization - Stimulated emission

Uncontrolled terms:Fluorescent nanoparticles - High numerical aperture objective - Off-axis - Phase spatial light modulator - Spatial light modulators - Stimulated emission depletion microscopy - Super resolution - Vectorial diffraction theories

Classification code:461.2 Biological Materials and Tissue Engineering - 711 Electromagnetic Waves - 741.1 Light/Optics - 741.3 Optical Devices and Systems - 746 Imaging Techniques

DOI:10.3788/AOS201737.0318009

Database:Compendex

Accession number:20180404671142

Title:A Multispectral target tracking algorithm based on particle filter

Authors:Gao, Zhen-Zhen (1, 2); Zhang, Geng (1); Hu, Bing-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

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

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:10462

Part number:1 of 1

Issue title:AOPC 2017: Optical Sensing and Imaging Technology and Applications

Issue date:2017

Publication year:2017

Article number:104622K

Language:English

ISSN:0277786X

E-ISSN:1996756X

CODEN:PSISDG

ISBN-13:9781510614055

Document type:Conference article (CA)

Conference name:Applied Optics and Photonics China: Optical Sensing and Imaging Technology and Applications, AOPC 2017

Conference date:June 4, 2017 - June 6, 2017

Conference location:Beijing, China

Conference code:133396

Sponsor:Chinese Society for Optical Engineering; The Society of Photo-Optical Instrumentation Engineers (SPIE)

Publisher:SPIE

Abstract:Target detection and tracking important in many applications including intelligent monitoring system, defense system and terminal guidance system. Aiming to solve the problem of simulated target tracking, this paper proposes an adaptive algorithm which uses the fusion of the spectral and morphological features of multispectral image to realize the target tracking based on the Particle Filter. Firstly, the target area is manually initialized in the multispectral image and the spectral and texture features of the target are extracted. Secondly, we build the adaptive tracking model of multiple features under the framework of Particle Filter. We validate the effectiveness of the proposed approach on the MATLAB platform. The results show that the proposed approach achieves accurate and stable multispectral target tracking in complex scenes by improving the efficiency of particles usage under defective tracking conditions, which is of great theoretical and practical values for the application of multispectral target tracking technology. © 2017 SPIE.

Number of references:8

Main heading:Target tracking

Controlled terms:Adaptive algorithms - Adaptive optics - Bandpass filters - Clutter (information theory) - Monitoring - Monte Carlo methods

Uncontrolled terms:Feature extract - Multi-spectral - Particle filter - Spectral angles - Texture features

Classification code:703.2 Electric Filters - 716.1 Information Theory and Signal Processing - 741.1 Light/Optics - 922.2 Mathematical Statistics

DOI:10.1117/12.2284791

Funding details: Number: -, Acronym: CAAS, Sponsor: Chinese Academy of Agricultural Sciences;Number: 61405239, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 11327303, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61501456, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;

Funding text:This work is supported by the National Natural Science Foundation of China (No. 61501456, NO.11327303 and NO.61405239), International Science &Technology Cooperation Program of china and "Light of West China" Program of Chinese Academy of Science.

Database:Compendex

Accession number:20172903947104

Title:OpenMRE: A Numerical Platform for MRE Study

Authors:Li, Bing Nan (1); Shan, Xiang (2); Xiang, Kui (3); Kobayashi, Etsuko (4); Wang, Meng (5); Li, Xuelong (6)

Author affiliation:(1) Department of Biomedical Engineering, Hefei University of Technology, Hefei 230009, China.(e-mail: bingoon@ieee.org); (2) Department of Biomedical Engineering, Hefei University of Technology, Hefei 230009, China.; (3) School of Automation, Wuhan University of Technology, Wuhan 430070, China.; (4) Department of Precision Engineering, University of Tokyo, Tokyo 113-8656, Japan.; (5) School of Computer Science and Information Engineering, Hefei University of Technology, Hefei 230009, China.; (6) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China.

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

Abbreviated source title:IEEE Trans. Syst. Man Cybern. Syst.

Issue date:July 6, 2017

Publication year:2017

Language:English

ISSN:21682216

E-ISSN:21682232

Document type:Article in Press

Publisher:Institute of Electrical and Electronics Engineers Inc.

Abstract:Magnetic resonance elastography (MRE) offers a noninvasive solution to visualize the mechanical properties of soft tissue, but the study suffers from expensive magnetic resonance scanning. Moreover, translating MRE wave images into soft tissue elasticity is a nontrivial issue for clinical professionals and healthcare practitioners. An interactive system--OpenMRE--is thus developed with the aid of ImageJ for numerical MRE study. It is comprised of two comparatively independent toolkits, namely MREA for simulation and MREP for interpretation. MREA mainly deals with the forward problem of MRE, and provides a numerical platform to determine the propagation and distribution of specially designed elastic wave. It is possible to numerically study some state-of-the-art paradigms including multisource and multifrequency MRE. The resultant wave images are interpretable in MREP that is designed for the inverse problem of MRE. It consists of the algorithms for phase unwrapping, directional filtering, and elasticity reconstruction. In a word, OpenMRE offers the MRE community a convenient and well-functioning system for interactive MRE study. IEEE

Main heading:Inverse problems

Controlled terms:Bioinformatics - Biomechanics - Computer simulation - Elastic waves - Elasticity - Magnetic resonance imaging - Magnetism - Medical imaging - Numerical models - Resonance - Tissue - Wave propagation

Uncontrolled terms:Biological tissues - Directional filtering - Elasticity reconstruction - Elastography - Forward problem - Interactive system - Magnetic resonance elastography - Phase unwrapping

Classification code:461 Bioengineering and Biology - 701.2 Magnetism: Basic Concepts and Phenomena - 723.5 Computer Applications - 746 Imaging Techniques - 921 Mathematics - 931.1 Mechanics

DOI:10.1109/TSMC.2017.2717481

Database:Compendex

Accession number:20173003967968

Title:Diagnostic Equipment Calibration Platform Based on Sub-Picosecond Ultraviolet Laser

Authors:Yuan, Zheng (1); Deng, Keli (1); Li, Jin (1); Yang, Zhiwen (1); Wu, Bingjing (2); Chen, Tao (1); Deng, Bo (1); Qi, Wenbo (2); Wang, Qiangqiang (1); Cao, Zhurong (1); Liu, Shenye (1)

Author affiliation:(1) Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang; Sichuan; 621900, China; (2) 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:37

Issue:6

Issue date:June 10, 2017

Publication year:2017

Article number:0614002

Language:Chinese

ISSN:02532239

CODEN:GUXUDC

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:In order to make full use of output characteristics of high energy, ultrashort pulse width of sub-picosecond ultraviolet lasers, a calibration platform of laser inertial confinement fusion(ICF) diagnostic equipment is established. The calibration platform has such functions as laser energy measurement, optical transmission delay, beam splitting and geometric decline, and sequential optical pulse generator, which can provide the structural support and high vacuum operating environment for the relevant diagnostic equipment. The mechanical and optical design is developed in all parts of the platform, and the platform is used to calibrate the X-ray diode response time, X-ray streak camera sweep speed, X-ray framing camera dynamic range and so on. The results show that the calibration platform matches the sub-picosecond ultraviolet calibration source well, and can achieve precise calibration of various diagnostic equipments. © 2017, Chinese Lasers Press. All right reserved.

Number of references:11

Main heading:Ultraviolet lasers

Controlled terms:Calibration - High energy lasers - Inertial confinement fusion - Lasers - Light transmission - Optical design - X rays

Uncontrolled terms:Diagnostic equipment - Dynamic range - Operating environment - Output characteristics - Sub-picosecond - Sweep speed - X-ray framing camera - X-ray streak cameras

Classification code:741.1 Light/Optics - 744.1 Lasers, General - 932.1 High Energy Physics - 932.2.1 Fission and Fusion Reactions

DOI:10.3788/AOS201737.0614002

Database:Compendex

Accession number:20171703607568

Title:Athermalization of infrared dual field optical system based on wavefront coding

Authors:Kai, Jiang (1); Bo, Jiang (1); Kai, Liu (1); Peipei, Yan (1); Jing, Duan (1); Qiusha, Shan (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:10256

Part number:1 of 1

Issue title:Second International Conference on Photonics and Optical Engineering

Issue date:2017

Publication year:2017

Article number:102563X

Language:English

ISSN:0277786X

E-ISSN:1996756X

CODEN:PSISDG

Document type:Conference article (CA)

Conference name:2nd International Conference on Photonics and Optical Engineering

Conference date:October 14, 2016

Conference location:Xi'an, China

Conference code:127345

Publisher:SPIE

Abstract:Wavefront coding is a technology which combination of the optical design and digital image processing. By inserting a phase mask closed to the pupil plane of the optical system, the wavefront of the system is re-modulated. And the depth of focus is extended consequently. In reality the idea is same as the athermalization theory of infrared optical system. In this paper, an uncooled infrared dual field optical system with effective focal as 38mm/19mm, F number as 1.2 of both focal length, operating wavelength varying from 8μm to 12μm was designed. A cubic phase mask was used at the pupil plane to re-modulate the wavefront. Then the performance of the infrared system was simulated with CODEV as the environment temperature varying from -40°C to 60°C. MTF curve of the optical system with phase mask are compared with the outcome before using phase mask. The result show that wavefront coding technology can make the system not sensitive to thermal defocus, and then realize the athermal design of the infrared optical system. © 2017 SPIE.

Number of references:8

Main heading:Optical systems

Controlled terms:C (programming language) - Codes (symbols) - Image coding - Light polarization - Optical data processing - Optical design - Photonics - Wavefronts

Uncontrolled terms:Athernalization - Depth of focus - Environment temperature - Infrared optical systems - Infrared systems - Operating wavelength - Uncooled Infrared - Wave-front coding

Classification code:723.1.1 Computer Programming Languages - 723.2 Data Processing and Image Processing - 741.1 Light/Optics - 741.3 Optical Devices and Systems

Numerical data indexing:Size 8.00e-06m to 1.20e-05m, Temperature 2.33e+02K to 3.33e+02K

DOI:10.1117/12.2257873

Database:Compendex

Accession number:20172403763410

Title:Visibility enhancement of hazy images using polarimetric dehazing method based on stokes parameters

Authors:Liang, Jian (1, 2); Zhang, Wenfei (1, 2); Ren, Liyong (1); Ju, Haijuan (1, 2); Bai, Zhaofeng (1); Qu, Enshi (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:Ren, Liyong(renliy@opt.ac.cn)

Source title:Optics InfoBase Conference Papers

Abbreviated source title:Opt. InfoBase Conf. Pap

Volume:Part F43-CLEO_AT 2017

Part number:1 of 1

Issue title:CLEO: Applications and Technology, CLEO_AT 2017

Issue date:2017

Publication year:2017

Language:English

ISBN-13:9781557528209

Document type:Conference article (CA)

Conference name:CLEO: Applications and Technology, CLEO_AT 2017

Conference date:May 14, 2017 - May 19, 2017

Conference location:San Jose, CA, United states

Conference code:135878

Publisher:OSA - The Optical Society

Abstract:Polarimetric dehazing methods are proven very effective in enhancing the contrast and visibility of images captured in hazy weather. In this paper, we analyze the capability of visibility enhancement in experiments. © 2017 OSA.

Number of references:6

Page count:2

Main heading:Image enhancement

Controlled terms:Demulsification - Polarimeters - Visibility

Uncontrolled terms:Dehazing - Stokes parameters

Classification code:741.2 Vision - 802.3 Chemical Operations - 941.3 Optical Instruments

DOI:10.1364/CLEO_AT.2017.AM4B.5

Database:Compendex

Accession number:20173504090068

Title:Comparative analysis of direct torque control and DTC based on sliding mode control for PMSM drive

Authors:Meng, Lingnan (1, 2); Yang, Xiaojun (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; 100080, China

Source title:Proceedings of the 29th Chinese Control and Decision Conference, CCDC 2017

Abbreviated source title:Proc. Chin. Control Decis. Conf., CCDC

Part number:1 of 1

Issue title:Proceedings of the 29th Chinese Control and Decision Conference, CCDC 2017

Issue date:July 12, 2017

Publication year:2017

Pages:736-741

Article number:7978529

Language:English

ISBN-13:9781509046560

Document type:Conference article (CA)

Conference name:29th Chinese Control and Decision Conference, CCDC 2017

Conference date:May 28, 2017 - May 30, 2017

Conference location:Chongqing, China

Conference code:129162

Publisher:Institute of Electrical and Electronics Engineers Inc.

Abstract:This paper firstly introduces the mathematical equations of PMSM (permanent magnet synchronous motor), an overview of direct torque control (DTC) and a DTC based on sliding mode control for PMSM, and then builds PMSM control system simulation models with above two methods in MATLAB /Simulink environment. Finally, we got the starting response, torque ripple and load perturbation responses of DTC and SMC-DTC by comparison the simulation results of the two models. © 2017 IEEE.

Number of references:10

DOI:10.1109/CCDC.2017.7978529

Database:Compendex

Accession number:20172103691508

Title:Ranging method based on linear frequency modulated laser

Authors:Guo, Na (1, 2); Gao, Cunxiao (1); Xue, Mingyuan (1, 2); Niu, Linquan (1); Zhu, Shaolan (1); Feng, Li (1); He, Haodong (1); Cao, Zongying (1)

Author affiliation:(1) 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; 101408, China

Corresponding author:Gao, Cunxiao(cxgao@opt.ac.cn)

Source title:Laser Physics

Abbreviated source title:Laser Phys.

Volume:27

Issue:6

Issue date:June 2017

Publication year:2017

Article number:065108

Language:English

ISSN:1054660X

E-ISSN:15556611

Document type:Journal article (JA)

Publisher:Institute of Physics Publishing

Abstract:In this paper, we obtain target information about the distance between laser sources and targets based on the linear frequency modulated laser ranging system. We designed a specific experimental scheme for the ranging of linear frequency modulated semiconductor lasers based on heterodyne ranging experiment. Ranging precision can reach micron dimension and range resolution is about 0.002 m within the range of 1-40 m. The ranging method in this paper can apply to laser radars which could be used to capture target information, which is very helpful for tracking, identifying and extracting targets. © 2017 Astro Ltd.

Number of references:18

Main heading:Frequency modulation

Controlled terms:Chirp modulation - Fiber lasers - Range finding - Semiconductor lasers

Uncontrolled terms:Experimental scheme - Laser sources - Linear frequency modulated - Linear modulations - Micron dimension - Range resolution - Ranging precision - Target information

Classification code:716 Telecommunication; Radar, Radio and Television - 744.4 Solid State Lasers - 744.4.1 Semiconductor Lasers

Numerical data indexing:Size 1.00e+00m to 4.00e+01m, Size 2.00e-03m

DOI:10.1088/1555-6611/aa6da3

Database:Compendex

Accession number:20172403763268

Title:Multi-channel phase-sensitive amplification in nonlinear waveguides

Authors:Zhang, Y. (1); Reimer, C. (1); Wu, J. (1); Roztocki, P. (1); Wetzel, B. (1, 2); Little, B.E. (3); Chu, S.T. (4); Moss, D.J. (5); Kues, M. (1, 6); Morandotti, R. (1, 7)

Author affiliation:(1) INRS-EMT, 1650 Boulevard Lionel-Boulet, Varennes; QC; J3X 1S2, Canada; (2) Department of Physics and Astronomy, University of Sussex, Falmer, Brighton; BN1 9QH, United Kingdom; (3) State Key Laboratory of Transient Optics and Photonics, Chinese Academy of Science, Xi'an, China; (4) City University of Hong Kong, Department of Physics and Material Science, Tat Chee Avenue, Hong Kong; (5) Center for Micro-Photonics, Swinburne University of Technology, Hawthorne; VIC; 3122, Australia; (6) School of Engineering, University of Glasgow, Rankine Building, Oakfield Avenue, Glasgow; G12 8LT, United Kingdom; (7) Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu; 610054, India

Corresponding author:Zhang, Y.(yanbing.zhang@emt.inrs.ca)

Source title:Optics InfoBase Conference Papers

Abbreviated source title:Opt. InfoBase Conf. Pap

Volume:Part F43-CLEO_AT 2017

Part number:1 of 1

Issue title:CLEO: Applications and Technology, CLEO_AT 2017

Issue date:2017

Publication year:2017

Language:English

ISBN-13:9781557528209

Document type:Conference article (CA)

Conference name:CLEO: Applications and Technology, CLEO_AT 2017

Conference date:May 14, 2017 - May 19, 2017

Conference location:San Jose, CA, United states

Conference code:135878

Publisher:OSA - The Optical Society

Abstract:We demonstrate on-chip multi-channel phase-sensitive amplification in a nonlinear waveguide, achieving 5 dB net gain and 15 dB extinction ratio. We show the manipulation of individual channels in a multi-channel scheme through controlling the initial phases. © 2017 OSA.

Number of references:11

Page count:2

Main heading:Waveguides

Uncontrolled terms:Extinction ratios - Initial phasis - Multi channel - Net gain - Nonlinear waveguides - On chips

Classification code:714.3 Waveguides

Numerical data indexing:Decibel 1.50e+01dB, Decibel 5.00e+00dB

DOI:10.1364/CLEO_AT.2017.JTh2A.91

Database:Compendex

Accession number:20171703607530

Title:Synchronous acquisition method based on feature recognition of sequence images in online vision inspection

Authors:Xin, Jiang (1, 2); Hua, Li (2); Jie, Liu (1, 2)

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

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

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:10256

Part number:1 of 1

Issue title:Second International Conference on Photonics and Optical Engineering

Issue date:2017

Publication year:2017

Article number:1025630

Language:English

ISSN:0277786X

E-ISSN:1996756X

CODEN:PSISDG

Document type:Conference article (CA)

Conference name:2nd International Conference on Photonics and Optical Engineering

Conference date:October 14, 2016

Conference location:Xi'an, China

Conference code:127345

Publisher:SPIE

Abstract:In order to meet the requirements of synchronous image acquisition in online industrial vision inspection, a new method based on image feature recognition is proposed. According to the method, the spatial characteristic information of sequence images has been calculated, and an algorithm under multi-constrained conditions which based on the trend of feature values of sequence images is established. The synchronous target image in online inspection is acquired by the trigger signal which was obtained by the algorithm under the condition of no dependence on external attachment. The method does not need to rely on the external position feedback device, and reduces the hardware cost. The algorithm has a better synchronization precision and adaptability, and has been successfully applied in practice. © 2017 SPIE.

Number of references:6

Main heading:Image acquisition

Controlled terms:Inspection - Photonics

Uncontrolled terms:Constrained conditions - Feature recognition - Position feedback device - Sequence images - Spatial characteristics - Synchronization precision - Synchronous acquisition - Vision inspection

Classification code:723 Computer Software, Data Handling and Applications - 741.1 Light/Optics

DOI:10.1117/12.2257657

Database:Compendex

Accession number:5190322

Title:On-chip generation of high-dimensional entangled quantum states and their coherent control

Authors:Kues, Michael (1, 2); Reimer, Christian (1); Roztocki, Piotr (1); Cortés, Luis Romero (1); Sciara, Stefania (1, 3); Wetzel, Benjamin (1, 4); Zhang, Yanbing (1); Cino, Alfonso (3); Chu, Sai T. (5); Little, Brent E. (6); Moss, David J. (7); Caspani, Lucia (8, 9); Azaña, José (1); Morandotti, Roberto (1, 10, 11)

Author affiliation:(1) Institut National de la Recherche Scientifique - Centre Énergie, Matériaux et Télécommunications (INRS-EMT), 1650 Boulevard Lionel-Boulet, Varennes; QC; J3X 1S2, Canada; (2) School of Engineering, University of Glasgow, Rankine Building, Oakfield Avenue, Glasgow; G12 8LT, United Kingdom; (3) Department of Energy, Information Engineering and Mathematical Models, University of Palermo, Palermo, Italy; (4) School of Mathematical and Physical Sciences, University of Sussex, Falmer, Brighton; BN1 9RH, United Kingdom; (5) Department of Physics and Material Science, City University of Hong Kong, Tat Chee Avenue, Hong Kong, Hong Kong; (6) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Science, Xi'an, China; (7) Centre for Micro Photonics, Swinburne University of Technology, Hawthorn; VIC; 3122, Australia; (8) Institute of Photonics, Department of Physics, University of Strathclyde, Glasgow; G1 1RD, United Kingdom; (9) Institute of Photonics and Quantum Sciences, Heriot-Watt University, Edinburgh; EH14 4AS, United Kingdom; (10) Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu; 610054, China; (11) National Research University of Information Technologies, Mechanics and Optics, St Petersburg, Russia

Source title:Nature

Abbreviated source title:Nature

Volume:546

Issue:7660

Issue date:June 28, 2017

Publication year:2017

Pages:622-626

Language:English

ISSN:00280836

E-ISSN:14764687

CODEN:NATUAS

Document type:Journal article (JA)

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

Abstract:Optical quantum states based on entangled photons are essential for solving questions in fundamental physics and are at the heart of quantum information science1. Specifically, the realization of high-dimensional states (D-level quantum systems, that is, qudits, with D > 2) and their control are necessary for fundamental investigations of quantum mechanics2, for increasing the sensitivity of quantum imaging schemes3, for improving the robustness and key rate of quantum communication protocols4, for enabling a richer variety of quantum simulations5, and for achieving more efficient and error-tolerant quantum computation6. Integrated photonics has recently become a leading platform for the compact, cost-efficient, and stable generation and processing of non-classical optical states7. However, so far, integrated entangled quantum sources have been limited to qubits (D = 2)8-11. Here we demonstrate on-chip generation of entangled qudit states, where the photons are created in a coherent superposition of multiple high-purity frequency modes. In particular, we confirm the realization of a quantum system with at least one hundred dimensions, formed by two entangled qudits with D = 10. Furthermore, using state-of-the-art, yet off-the-shelf telecommunications components, we introduce a coherent manipulation platform with which to control frequency-entangled states, capable of performing deterministic high-dimensional gate operations. We validate this platform by measuring Bell inequality violations and performing quantum state tomography. Our work enables the generation and processing of high-dimensional quantum states in a single spatial mode. © 2017 Macmillan Publishers Limited, part of Springer Nature. All rights reserved.

Number of references:45

Controlled terms:electronic equipment - imaging method - operations technology - physics - quantum mechanics - telecommunication - tomography

Classification code:901 Geobase: Related Topics

DOI:10.1038/nature22986

Funding details: Number: XDB24030300, Acronym: CAS, Sponsor: Chinese Academy of Sciences;Number: -, Acronym: NSERC, Sponsor: Natural Sciences and Engineering Research Council of Canada;

Funding text:This work was supported by the Natural Sciences and Engineering Research Council of Canada (NSERC) through the Steacie, Strategic, Discovery and Acceleration Grants Schemes, by the MESI PSRSIIRI Initiative in Quebec, by the Canada Research Chair Program and by the Australian Research Council Discovery Projects scheme (DP150104327). C.R. and P.R. acknowledge the support of NSERC Vanier Canada Graduate Scholarships. M.K. acknowledges funding from the European Union's Horizon 2020 Research and Innovation programme under the Marie Sklodowska- Curie grant agreement number 656607. S.T.C. acknowledges support from the CityU APRC programme number 9610356. B.E.L. acknowledges support from the Strategic Priority Research Program of the Chinese Academy of Sciences (grant number XDB24030300). B.W. acknowledges support from the People Programme (Marie Curie Actions) of the European Union's FP7 Programme under REA grant agreement INCIPIT (PIOF-GA-2013-625466). L.C. acknowledges support from the People Programme (Marie Curie Actions) of the European Union's FP7 Programme under REA Grant Agreement number 627478 (THREEPLE). R.M. acknowledges additional support by the Government of the Russian Federation through the ITMO Fellowship and Professorship Program (grant 074-U 01) and from the 1000 Talents Sichuan Program. We thank R. Helsten and M. Islam for technical insights; A. Tavares, T. Hansson and A. Bruhacs for discussions; T. A. Denidni and S. O. Tatu for lending us some of the required experimental equipment; P. Kung from QPS Photronics for help and the use of processing equipment; as well as Quantum Opus and N. Bertone of OptoElectronics Components for their support and for providing us with state-of-the-art photon detection equipment.

Database:GEOBASE

Accession number:20181705046884

Title:Multispectral image compression algorithm based on spectral clustering and wavelet transform

Authors:Huang, Rong (1, 2); Qiao, Weidong (2); Yang, Jianfeng (2); Wang, Hong (1, 2); Xue, Bin (2); Tao, Jinyou (2)

Author affiliation:(1) Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710068, 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:10605

Part number:1 of 1

Issue title:LIDAR Imaging Detection and Target Recognition 2017

Issue date:2017

Publication year:2017

Article number:106051X

Language:English

ISSN:0277786X

E-ISSN:1996756X

CODEN:PSISDG

ISBN-13:9781510617063

Document type:Conference article (CA)

Conference name:LIDAR Imaging Detection and Target Recognition 2017

Conference date:July 23, 2017 - July 25, 2017

Conference location:Changchun, China

Conference code:133763

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

Publisher:SPIE

Abstract:In this paper, a method based on spectral clustering and the discrete wavelet transform (DWT) is proposed, which is based on the problem of the high degree of space-time redundancy in the current multispectral image compression algorithm. First, the spectral images are grouped by spectral clustering methods, and the clusters of similar heights are grouped together to remove the redundancy of the spectra. Then, wavelet transform and coding of the class representative are performed, and the space redundancy is eliminated, and the difference composition is applied to the Karhunen-Loeve transform (KLT) and wavelet transform. Experimental results show that with JPEG2000 and upon KLT + DWT algorithm, compared with the method has better peak signal-to-noise ratio and compression ratio, and it is suitable for compression of different spectral bands. © 2017 SPIE.

Number of references:9

Main heading:Image compression

Controlled terms:Clustering algorithms - Compaction - Digital image storage - Discrete wavelet transforms - Image coding - Optical radar - Principal component analysis - Redundancy - Signal reconstruction - Signal to noise ratio - Spectroscopy - Wavelet transforms

Uncontrolled terms:DWT algorithms - Karhunen Loeve Transform (KLT) - Multispectral images - Multispectral-image compression - Peak signal to noise ratio - Spectral clustering - Spectral clustering methods - Spectral images

Classification code:716.1 Information Theory and Signal Processing - 716.2 Radar Systems and Equipment - 722.1 Data Storage, Equipment and Techniques - 903.1 Information Sources and Analysis - 921.3 Mathematical Transformations - 922.2 Mathematical Statistics

DOI:10.1117/12.2292014

Database:Compendex

Accession number:20171403518577

Title:Study of imaging fiber bundle coupling technique in IR system

Authors:Chen, Guoqing (1, 2); Yang, Jianfeng (2); Yan, Xingtao (2); Song, Yansong (1, 2)

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

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

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:10250

Part number:1 of 1

Issue title:International Conference on Optical and Photonics Engineering, icOPEN 2016

Issue date:2017

Publication year:2017

Article number:102500S

Language:English

ISSN:0277786X

E-ISSN:1996756X

CODEN:PSISDG

ISBN-13:9781510610019

Document type:Conference article (CA)

Conference name:International Conference on Optical and Photonics Engineering, icOPEN 2016

Conference date:September 26, 2016 - September 30, 2016

Conference location:Chengdu, China

Conference code:126841

Sponsor:International Association of Computer Science and Information Technology; Sichuan Institute of Electronics

Publisher:SPIE

Abstract:Due to its advantageous imaging characteristic and banding flexibility, imaging fiber bundle can be used for line-plane-switching push-broom infrared imaging. How to precisely couple the fiber bundle in the optics system is the key to get excellent image for transmission. After introducing the basic system composition and structural characteristics of the infrared systems coupled with imaging fiber bundle, this article analysis the coupling efficiency and the design requirements of its relay lenses with the angle of the numerical aperture selecting in the system and cold stop matching of the refrigerant infrared detector. For an actual need, one relay coupling system has been designed with the magnification is -0.6, field of objective height is 4mm, objective numerical aperture is 0.15, which has excellent image quality and enough coupling efficiency. In the end, the push broom imaging experiment is carried out. The results show that the design meets the requirements of light energy efficiency and image quality. This design has a certain reference value for the design of the infrared fiber optical system. © 2017 COPYRIGHT SPIE.

Number of references:9

Main heading:Thermography (imaging)

Controlled terms:Energy efficiency - Fibers - Image quality - Light - Optical systems - Photonics

Uncontrolled terms:Cold stop - Imaging fiber bundle - Ir systems - Numerical aperture - Relay lens

Classification code:525.2 Energy Conservation - 741.1 Light/Optics - 741.3 Optical Devices and Systems - 742.1 Photography

Numerical data indexing:Size 4.00e-03m

DOI:10.1117/12.2266955

Database:Compendex

Accession number:20181705046990

Title:Electro-optical design of a long slit streak tube

Authors:Tian, Liping (1, 2, 3); Tian, Jinshou (1, 3); Wen, Wenlong (1); Chen, Ping (1); Wang, Xing (1); Hui, Dandan (1, 2); Wang, Junfeng (1)

Author affiliation:(1) Key Laboratory of Ultra-fast Photoelectric Diagnostics Technology, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (2) University of Chinese Academy of Sciences, Beijing; 100049, China; (3) Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan; 030006, China

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

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:10605

Part number:1 of 1

Issue title:LIDAR Imaging Detection and Target Recognition 2017

Issue date:2017

Publication year:2017

Article number:106050O

Language:English

ISSN:0277786X

E-ISSN:1996756X

CODEN:PSISDG

ISBN-13:9781510617063

Document type:Conference article (CA)

Conference name:LIDAR Imaging Detection and Target Recognition 2017

Conference date:July 23, 2017 - July 25, 2017

Conference location:Changchun, China

Conference code:133763

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

Publisher:SPIE

Abstract:A small size and long slit streak tube with high spatial resolution was designed and optimized. Curved photocathode and screen were adopted to increase the photocathode working area and spatial resolution. High physical temporal resolution obtained by using a slit accelerating electrode. Deflection sensitivity of the streak tube was improved by adopting two-folded deflection plates. The simulations indicate that the photocathode effective working area can reach 30mm × 5mm. The static spatial resolution is higher than 40lp/mm and 12lp/mm along scanning and slit directions respectively while the physical temporal resolution is higher than 60ps. The magnification is 0.75 and 0.77 in scanning and slit directions. And also, the deflection sensitivity is as high as 37mm/kV. The external dimension of the streak tube are only '.74mm×231mm. Thus, it can be applied to laser imaging radar system for large field of view and high range precision detection. © 2017 SPIE.

Number of references:8

Main heading:Optical radar

Controlled terms:Image resolution - Optical design - Photocathodes - Radar systems - Streak cameras - Tubes (components)

Uncontrolled terms:Deflection sensitivities - High spatial resolution - Large field of views - Laser imaging - Slit streak tubes - Spatial resolution - Streak tubes - Temporal resolution

Classification code:619.1 Pipe, Piping and Pipelines - 716.2 Radar Systems and Equipment - 741.1 Light/Optics - 741.3 Optical Devices and Systems - 742.2 Photographic Equipment

Numerical data indexing:Size 5.00e-03m, Time 6.00e-11s

DOI:10.1117/12.2295869

Database:Compendex

Accession number:20173504083027

Title:Entanglement generation with integrated optical frequency comb sources

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

Author affiliation:(1) INRS-EMT, 1650 Boulevard Lionel-Boulet, Varennes; QC; J3X 1S2, Canada; (2) School of Engineering, University of Glasgow, Rankine Building, Oakfield Avenue, Glasgow; G12 8LT, United Kingdom; (3) Department of Physics and Astronomy, University of Sussex, Falmer, Brighton; BN1 9RH, United Kingdom; (4) Racah Institute of Physics, The Hebrew University of Jerusalem, Jerusalem; 91904, Israel; (5) Xi'an Institute of Optics and Precision Mechanics of CAS, Xi'an, China; (6) Department of Physics and Material Science, City University of Hong Kong, Tat Chee Avenue, Hong Kong; (7) Centre for Micro Photonics, Swinburne University of Technology, Hawthorn; VIC; 3122, Australia; (8) Institute of Photonics, Department of Physics, University of Strathclyde, Glasgow; G4 0NW, United Kingdom

Corresponding author:Morandotti, Roberto

Source title:Optics InfoBase Conference Papers

Abbreviated source title:Opt. InfoBase Conf. Pap

Volume:Part F54-NLO 2017

Part number:1 of 1

Issue title:Nonlinear Optics, NLO 2017

Issue date:2017

Publication year:2017

Language:English

ISBN-13:9781557528209

Document type:Conference article (CA)

Conference name:Nonlinear Optics, NLO 2017

Conference date:July 17, 2017 - July 21, 2017

Conference location:Waikoloa, HI, United states

Conference code:136898

Sponsor:AMERICAN ELEMENTS; KMLabs Inc; OSA

Publisher:OSA - The Optical Society

Abstract:We show that integrated optical frequency comb sources, based on on-chip microring resonators, can be used as versatile sources of two- and multi-photon entangled states when operated well below their optical parametric oscillation threshold. © OSA 2017.

Number of references:15

Page count:2

Main heading:Nonlinear optics

Controlled terms:Natural frequencies - Optical materials - Quantum entanglement

Uncontrolled terms:Entanglement generation - Microring resonator - Multi-photon entangled state - On chips - Optical frequency comb sources - Optical parametric oscillations

Classification code:741.1.1 Nonlinear Optics - 741.3 Optical Devices and Systems - 931.4 Quantum Theory; Quantum Mechanics

DOI:10.1364/NLO.2017.NM1A.5

Database:Compendex

Accession number:20180504692894

Title:Assessment of image quality for spot-detecting camera with anisotropic Gaussian fitting

Authors:Li, Kun (1); Zhao, Jian-Ke (1); Chen, Yong-Quan (1); Xue, Xun (1); Duan, Ya-Xuan (1); Cao, Kun (1)

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

Corresponding author:Li, Kun(wllk-19821118@163.com)

Source title:Guangxue Jingmi Gongcheng/Optics and Precision Engineering

Abbreviated source title:Guangxue Jingmi Gongcheng

Volume:25

Issue:12

Issue date:December 1, 2017

Publication year:2017

Pages:3187-3194

Language:Chinese

ISSN:1004924X

CODEN:GJGOF4

Document type:Journal article (JA)

Publisher:Chinese Academy of Sciences

Abstract:To evaluate quantitatively the image quality of a spot-detecting camera, a 2D anisotropic Gaussian fitting method was proposed. A spot-detecting camera was used to collect the infinity point target coming from a star simulator, and a certain area of energy distribution was obtained. Based on the correlation of the Gaussian energy distribution and the original distribution, this energy distribution was used in anisotropic Gaussian fitting to solve the parameters such as Gaussian radius and anisotropic factor. Then, the size of 80% of the energy was obtained by numerical integration. The experimental results show that the background threshold and anisotropic factor are optimized automatically and the influence of the noise on test results is reduced since the correlation is introduced. Moreover, the introduction of anisotropic factors, evaluation of pixel-phase error and the effect of optical system aberration on the imaging quality of the camera can be used as the testing condition criterion for defocused spots. The experimental results show that the repeatability of equivalent area circle diameter for the defocused spots is 0.15 pixel under the crisscross-shaped condition and that is 0.19 pixel under the farmland-shaped condition, respectively. The proposed method implements the defocused spot test by spot-detecting cameras, and also controls better imaging quality. © 2017, Science Press. All right reserved.

Number of references:12

Main heading:Image quality

Controlled terms:Anisotropy - Cameras - Correlation methods - Gaussian distribution - Optical systems - Pixels - Quality control

Uncontrolled terms:Anisotropic factor - Background threshold - Energy distributions - Gaussian energy distribution - Gaussian fitting - Numerical integrations - Pixel phase - Testing conditions

Classification code:741.3 Optical Devices and Systems - 742.2 Photographic Equipment - 913.3 Quality Assurance and Control - 922.2 Mathematical Statistics - 931.2 Physical Properties of Gases, Liquids and Solids

Numerical data indexing:Percentage 8.00e+01%

DOI:10.3788/OPE.20172512.3187

Database:Compendex

Accession number:20163502755891

Title:A novel strategy to prepare 2D g-C<inf>3</inf>N<inf>4</inf>nanosheets and their photoelectrochemical properties

Authors:Miao, Hui (1, 2, 3); Zhang, Guowei (1); Hu, Xiaoyun (1, 3); Mu, Jianglong (1); Han, Tongxin (1); Fan, Jun (4); Zhu, Changjun (6); Song, Lixun (6); Bai, Jintao (1, 3); Hou, Xun (2, 3, 5)

Author affiliation:(1) School of Physics, Northwest University, Xi'an; 710069, China; (2) Institute of Photonics & Photon-Technology, Northwest University, Xi'an; 710069, China; (3) National Photoelectric Technology and Functional Materials & Application of Science and Technology International Cooperation Base, Northwest University, Xi'an; 710069, China; (4) School of Chemical Engineering, Northwest University, Xi'an; 710069, China; (5) State Key Laboratory of Transient Optics and Technology, Xi'an Institute of Optics & Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710068, China; (6) School of Science, Xi'an Polytechnic University, Xi'an; 710048, China

Corresponding author:Hu, Xiaoyun(hxy3275@nwu.edu.cn)

Source title:Journal of Alloys and Compounds

Abbreviated source title:J Alloys Compd

Volume:690

Issue date:2017

Publication year:2017

Pages:669-676

Language:English

ISSN:09258388

CODEN:JALCEU

Document type:Journal article (JA)

Publisher:Elsevier Ltd

Abstract:Herein, 2D g-C<inf>3</inf>N<inf>4</inf>nanosheets was successfully prepared by two processes: acid treatment and liquid exfoliation. The thickness of the nanosheets was nearly 4.545 nm containing &sim;13 C-N layers. The acid treatment process before liquid exfoliation for bulk g-C<inf>3</inf>N<inf>4</inf>could effectively destroy the in-plane periodicity of the aromatic systems and made the bulk easily exfoliated. This work carefully discussed the acid treatment effect for bulk by XRD patterns, nitrogen adsorption-desorption isotherm, FT-IR spectra, and UV–vis–NIR absorption spectra. Moreover, the nanosheets was fabricated and transferred onto FTO substrates by vacuum filtration self-assembled method to carefully investigate their optical, electrical, and photoelectrochemical properties. The thin film filtrated by 2 ml g-C<inf>3</inf>N<inf>4</inf>nanosheets supernatant showed the best photocurrent response nearly 0.5 μA/cm2and the lowest resistance of charge transfer (Rct) at the interface between FTO and electrolyte. The photocurrent response could be further effectively improved from nearly 0.5 to 1.8 μA/cm2by the integration of CNTs to promote charge separation and transfer. Thus, the easy, safe, and indirect synthesis of 2D g-C<inf>3</inf>N<inf>4</inf>-based nanosheets thin films opens new possibilities for the fabrication of many energy-related devices. © 2016 Elsevier B.V.

Number of references:24

Main heading:Thin films

Controlled terms:Charge transfer - Electrochemistry - Electrolytes - Gas adsorption - Interfaces (materials) - Nanosheets

Uncontrolled terms:Charge separations - g-C3N4 - Indirect synthesis - Liquid exfoliations - Nitrogen adsorption desorption isotherms - Photocurrent response - Photoelectrochemical properties - Photoelectrochemicals

Classification code:702 Electric Batteries and Fuel Cells - 761 Nanotechnology - 801.4.1 Electrochemistry - 802.2 Chemical Reactions - 802.3 Chemical Operations - 803 Chemical Agents and Basic Industrial Chemicals - 804 Chemical Products Generally - 933 Solid State Physics - 951 Materials Science

DOI:10.1016/j.jallcom.2016.08.184

Funding details: Number: 20136101110009, Acronym: -, Sponsor: -;Number: 21476183, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 51372201, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;

Funding text:This work has been supported by the National Natural Science Foundation of China (Grant No. 21476183 , 51372201 ), and the Research Fund for the Doctoral Program of Higher Education (Grant No. 20136101110009 ).

Database:Compendex

Accession number:20175104545957

Title:Analysis of partial crystallization in Yb3+doped aluminophosphosilicate fiber preforms prepared with organic chelate precursor doping technique

Authors:Luo, Rong (1, 2); Li, Weinan (1); Hou, Chaoqi (1); Wang, Pengfei (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

Source title:ECS Journal of Solid State Science and Technology

Abbreviated source title:ECS J. Solid State Sci. Technol.

Volume:6

Issue:4

Issue date:2017

Publication year:2017

Pages:P138-P143

Language:English

ISSN:21628769

E-ISSN:21628777

Document type:Journal article (JA)

Publisher:Electrochemical Society Inc.

Abstract:Yb3+doped aluminophosphosilicate fiber preforms have been prepared by modified chemical vapor deposition (MCVD) with organic chelate precursor doping technique (OCD). It was found that the flow ratio of Yb(thd)<inf>3</inf>/POCl<inf>3</inf>had an important influence on partial crystallization in the preform cores. The wholly transparent core was obtained when the flow ratio of Yb(thd)<inf>3</inf>/POCl<inf>3</inf>ranged in 0.71:1–0.82:1. Crystallization occurred during etching process when the Yb(thd)<inf>3</inf>/POCl<inf>3</inf>flow ratio was over 0.83:1, corresponding to a doping ratio of Yb<inf>2</inf>O<inf>3</inf>/P<inf>2</inf>O<inf>5</inf>larger than 1.01:1, as characterized by electron probe microanalysis (EPMA). X-ray photoelectric spectroscopy (XPS) analysis indicated exsistence of P in the quasi-metaphosphate [PO4] bond structures in the crystallized area. Raman spectra displayed characteristic peaks of silica glasses except 1330 cm−1Raman peaks, which can be assigned to P=O bond due to the presence of quasi-metaphosphate [PO4] units. When the content ratio of Yb<inf>2</inf>O<inf>3</inf>/P<inf>2</inf>O<inf>5</inf>exceeded 1.01:1, Al was depleted and P was enriched, and the Yb3+ions was mainly connected with the quasi-metaphosphate [PO4] units, which weakened the role of P and Al preventing Yb3+ions clustering. As a result, crystallization occurred. And this schematic glass structural model was proposed for the partially crystallized preform core. © 2017 The Electrochemical Society. All rights reserved.

Number of references:30

Main heading:Aluminum

Controlled terms:Chelation - Chemical vapor deposition - Electron probe microanalysis - Glass - Photoelectricity - Preforming - Silica

Uncontrolled terms:Characteristic peaks - Chelate precursor - Doping techniques - Etching process - Modified chemical vapor depositions - Partial crystallization - Structural modeling - X-ray photoelectric spectroscopy

Classification code:541.1 Aluminum - 701.1 Electricity: Basic Concepts and Phenomena - 801 Chemistry - 802.2 Chemical Reactions - 812.3 Glass

DOI:10.1149/2.0151704jss

Funding details: Number: 2015JM6315, Acronym: -, Sponsor: Natural Science Foundation of Shaanxi Province;Number: -, Acronym: CAS, Sponsor: Chinese Academy of Sciences;Number: 61675229, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61307046, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61138007, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;

Funding text:The authors acknowledge the following projects financially supported by the National Natural Science Foundation of China (grant No. 61138007, No.61307046 and No. 61675229), Natural Science Basic Research Project in Shaanxi Province (2015JM6315) and West Young Scholars Program of the Chinese Academy of Sciences.

Database:Compendex

Accession number:20171703607610

Title:Modal analysis of collimation frame fabricated by titanium alloy

Authors:Zhang, Yongqiang (1, 2); Liu, Zhaohui (2); Li, Zhiguo (2)

Author affiliation:(1) University of Chinese, Academy of Sciences, China; (2) Xi'An Institute of Optics and Precision Mechanics CAS, GaoXin qu, XinXi road 17, 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:10256

Part number:1 of 1

Issue title:Second International Conference on Photonics and Optical Engineering

Issue date:2017

Publication year:2017

Article number:102560C

Language:English

ISSN:0277786X

E-ISSN:1996756X

CODEN:PSISDG

Document type:Conference article (CA)

Conference name:2nd International Conference on Photonics and Optical Engineering

Conference date:October 14, 2016

Conference location:Xi'an, China

Conference code:127345

Publisher:SPIE

Abstract:Collimation frame is the key supporting component of Space two-dimensional turntable. Its stiffness characteristics are vital for the performance of turntable. In order to reduce weight and improve rigidity, a lightweight collimation frame is designed. Compared with some commonly used aerospace materials, titanium alloy is chosen as the material of collimation frame for its excellent advantages. Modal analysis of the collimation frame is realized by using finite element analysis software MSC. Patran/Nastran to verify whether the stiffness of frame meet the design requirements. The results of analysis show that the first natural frequency of collimation frame is 169.5Hz, which satisfies the design requirement of stiffness. Then, modal experiment is conducted to verify the correctness of the results obtained from finite element modal analysis. The results of experiment show that simulation and experiment results agree well, which further confirm the correctness of the finite element modal analysis. Therefore, it proves that the selection of material and the design of structure are feasible. © 2017 SPIE.

Number of references:12

Main heading:Modal analysis

Controlled terms:Finite element method - Photonics - Stiffness - Titanium alloys

Uncontrolled terms:Collimation frame - Finite element analysis software - Finite element modal analysis - Material stiffness - Model analysis - Selection of materials - Stiffness characteristics - Two-dimensional turntables

Classification code:542.3 Titanium and Alloys - 741.1 Light/Optics - 921 Mathematics - 921.6 Numerical Methods - 951 Materials Science

Numerical data indexing:Frequency 1.70e+02Hz

DOI:10.1117/12.2268787

Database:Compendex

Accession number:20170803379718

Title:Ground-based optical detection of low-dynamic vehicles in near-space

Authors:Jing, Nan (1, 2); Li, Chuang (1); Zhong, Peifeng (1, 2)

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

Corresponding author:Li, Chuang(lichuang@opt.ac.cn)

Source title:Optical Engineering

Abbreviated source title:Opt Eng

Volume:56

Issue:1

Issue date:January 1, 2017

Publication year:2017

Article number:014107

Language:English

ISSN:00913286

E-ISSN:15602303

CODEN:OPEGAR

Document type:Journal article (JA)

Publisher:SPIE

Abstract:Ground-based optical detection of low-dynamic vehicles in near-space is analyzed to detect, identify, and track high-altitude balloons and airships. The spectral irradiance of a representative vehicle on the entrance pupil plane of ground-based optoelectronic equipment was obtained by analyzing the influence of its geometry, surface material characteristics, infrared self-radiation, and the reflected background radiation. Spectral radiation characteristics of the target in both clear weather and complex meteorological weather were simulated. The simulation results show the potential feasibility of using visible-near-infrared (VNIR) equipment to detect objects in clear weather and long-wave infrared (LWIR) equipment to detect objects in complex meteorological weather. A ground-based VNIR and LWIR optoelectronic experimental setup is built to detect low-dynamic vehicles in different weather. A series of experiments in different weather are carried out. The experiment results validate the correctness of the simulation results. © 2017 Society of Photo-Optical Instrumentation Engineers (SPIE).

Number of references:42

Main heading:Distribution functions

Controlled terms:Atmospheric spectra - Infrared devices - Infrared radiation - Meteorological balloons - Object detection - Reflection - Space optics - Vehicles

Uncontrolled terms:Background radiation - Bi-directional scattering distribution functions - Bidirectional reflectance distribution functions - High-altitude balloons - Spectral irradiance - Spectral radiation characteristic - Transmittance distribution - Visible near-infrared

Classification code:443.2 Meteorological Instrumentation - 723.2 Data Processing and Image Processing - 741.1 Light/Optics - 922.1 Probability Theory

DOI:10.1117/1.OE.56.1.014107

Database:Compendex

Accession number:20171203489690

Title:Effect of iodine (I<inf>2</inf>) on structural, thermal and optical properties of Ge-Sb-S chalcohalide host glasses and ones doped with Dy

Authors:Guo, Quan (1, 2); Xu, Yantao (1, 2); Guo, Haitao (1, 3); Xiao, Xusheng (1); Lin, Changgui (4); Cui, Xiaoxia (1); Wang, Pengfei (1); Gao, Fei (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 Science (CAS), Xi'an; Shaanxi; 710119, China; (2) University of Chinese Academy of Sciences (UCAS), Beijing; 100049, China; (3) State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou; 510640, China; (4) Laboratory of Infrared Materials and Devices, The Research of Institution of Advanced Technologies of Ningbo University, Ningbo; Zhejiang; 315211, China

Corresponding author:Guo, Haitao(guoht_001@opt.ac.cn)

Source title:Journal of Non-Crystalline Solids

Abbreviated source title:J Non Cryst Solids

Volume:464

Issue date:May 15, 2017

Publication year:2017

Pages:81-88

Language:English

ISSN:00223093

CODEN:JNCSBJ

Document type:Journal article (JA)

Publisher:Elsevier B.V.

Abstract:A serial (100 − x)Ge<inf>25</inf>Sb<inf>10</inf>S<inf>65</inf>-xI (x = 0, 5, 10, 15, 20, 25 and 30 wt%) chalcohalide glasses and ones doped with 0.1 wt% Dy3 +rare-earth ions were synthesized and their structural, thermal and optical properties were systematically studied. It indicates that addition of I<inf>2</inf>into Ge<inf>25</inf>Sb<inf>10</inf>S<inf>65</inf>glass significantly decreases the connectivity of glass network and average bond energy, and modifies the associated properties. The glass transition temperature and refractive index decrease monotonically, and the density increases almost linearly with the increasing of iodine content in glass. The thermal stability is improved, which has a maximum of ΔT<inf>max</inf> = 174 °C. While the optical bandgap has a peak value at x = 10 wt%. The absorption spectra and mid-infrared fluorescence spectra of Dy3 +rare-earth ions doped glasses were investigated together with the Judd-Ofelt analysis. GeS<inf>2</inf>nano-crystals were found in the sample with x ≥ 15 wt%, which is supposed to induce enhancements of mid-infrared fluorescence at 2.95 and 4.32 μm. © 2017 Elsevier B.V.

Number of references:59

Main heading:Sulfur compounds

Controlled terms:Antimony compounds - Fluorescence - Germanium compounds - Glass - Glass transition - Infrared devices - Iodine - Iodine compounds - Metal ions - Optical properties - Rare earths - Refractive index - Structure (composition) - Thermodynamic properties

Uncontrolled terms:Bond energies - Chalcohalide glass - Doped glass - Glass network - Judd-ofelt analysis - Midinfrared - Peak values - Rare earth ions

Classification code:531.1 Metallurgy - 641.1 Thermodynamics - 741.1 Light/Optics - 802.3 Chemical Operations - 804 Chemical Products Generally - 804.2 Inorganic Compounds - 812.3 Glass - 951 Materials Science

DOI:10.1016/j.jnoncrysol.2017.03.024

Funding details: Number: 2015JQ5141, Acronym: -, Sponsor: Natural Science Foundation of Shaanxi Province;Number: -, Acronym: CAS, Sponsor: Chinese Academy of Sciences;Number: 2015-skllmd-05, Acronym: SCUT, Sponsor: South China University of Technology;Number: -, Acronym: CAS, Sponsor: Chinese Academy of Sciences;Number: 61475189, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61405241, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;

Funding text:This work was financially supported by the West Light Foundation from Chinese Academy of Sciences (CAS) of China, the National Natural Science Foundation of China (61475189 and 61405241) and the Natural Science Basic Research Project in Shaanxi Province (2015JQ5141). The work was also funded by the State Key Laboratory of Luminescent Materials and Devices (South China University of Technology) (2015-skllmd-05).

Database:Compendex

Accession number:20171803628642

Title:Nonlinear optical response and applications of tin disulfide in the near- and mid-infrared

Authors:Yang, H.R. (1, 2); Liu, X.M. (1, 2, 3)

Author affiliation:(1) State Key Laboratory of Modern Optical Instrumentation, Department of Optical Engineering, Zhejiang University, Hangzhou; 310027, 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 Electronic Science, Hunan University of Science and Technology, Xiangtan; 411201, China

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

Source title:Applied Physics Letters

Abbreviated source title:Appl Phys Lett

Volume:110

Issue:17

Issue date:April 24, 2017

Publication year:2017

Article number:171106

Language:English

ISSN:00036951

CODEN:APPLAB

Document type:Journal article (JA)

Publisher:American Institute of Physics Inc.

Abstract:Layered metal dichalcogenides (LMDs) have received considerable attention in optoelectronics and photonics. Tin disulfide (SnS<inf>2</inf>) as a member of the LMDs has been employed for transistors, energy storage, and photocatalysts. The optical properties of SnS<inf>2</inf>in the ultraviolet and visible regions have been widely investigated, while the applications of SnS<inf>2</inf>in the near- and mid-infrared regions are still rare. Here, we demonstrate the nonlinear optical response of layered SnS<inf>2</inf>that is exploited as a saturable absorber in the near- and mid-infrared regions. The saturable absorption of SnS<inf>2</inf>is measured at 1.06 and 1.55 μm, which illustrates a low saturable intensity. SnS<inf>2</inf>covered on a D-shaped fiber is used to initiate the mode-locking operations in erbium-, ytterbium-, and thulium-doped fiber lasers and ultrafast pulses are achieved at 1.03, 1.56, and 1.91 μm. These results make SnS<inf>2</inf>an appealing candidate for broadband applications across the near- and mid-infrared regions. © 2017 Author(s).

Number of references:59

Main heading:Tin compounds

Controlled terms:Fiber lasers - Infrared devices - IV-VI semiconductors - Locks (fasteners) - Nonlinear optics - Optical properties - Saturable absorbers - Semiconducting tin compounds - Semiconductor quantum wells - Sulfur compounds

Uncontrolled terms:Broadband applications - D-shaped fiber - Dichalcogenides - Mid-infrared regions - Nonlinear optical response - Saturable absorption - Thulium-doped fibers - Ultrafast pulse

Classification code:712.1.2 Compound Semiconducting Materials - 714.2 Semiconductor Devices and Integrated Circuits - 741.1 Light/Optics - 741.1.1 Nonlinear Optics - 744.1 Lasers, General - 744.4 Solid State Lasers

Numerical data indexing:Size 1.06e-06m, Size 1.55e-06m, Size 1.91e-06m

DOI:10.1063/1.4982624

Funding details: Number: 2015KCT-06, Acronym: -, Sponsor: -;Number: 61525505, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;

Funding text:This work was supported by the National Natural Science Foundation of China under Grant Agreement No. 61525505, and by the Key Scientific and Technological Innovation Team Project in Shaanxi Province (2015KCT-06).

Database:Compendex

Accession number:20171103436800

Title:Electromechanical coupling characteristics of optical-electric theodolite

Authors:Zhang, Jing (1); Hao, Wei (1); Yang, Xiao-Xu (1); Jing, Feng (1); Huang, Wei (1); Qiu, Peng (1); Cao, Bei (1)

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

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

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:46

Issue:1

Issue date:January 1, 2017

Publication year:2017

Article number:0112005

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:Combing the structure dynamic design method with the control theory, the flexible electromechanical coupling control model was built which is difference from the traditional rigid control model. The relationship between the structural fundamental frequency and servo bandwidth was analyzed, then the dynamic quantitative design principles were put-forward, The experiment results show that, the theodolite structure frequency should be far away from the resonant frequency of the system, and meet ω<inf>n</inf>≥3ω<inf>r</inf>at least, which is effective and feasible, has solved the high precision large theodolite electromechanical resonance problem, and provide the basis of engineering for designing fast response and high tracking precision of photoelectric theodolite. © 2017, Science Press. All right reserved.

Number of references:10

Page count:7

Main heading:Structural design

Controlled terms:Bandwidth - Dynamic analysis - Electromechanical coupling - Natural frequencies - Photoelectricity - Precision engineering - Professional aspects

Uncontrolled terms:Damping ratio - Electro-optical - Gain - Servo bandwidth - Structural frequencies

Classification code:408.1 Structural Design, General - 701.1 Electricity: Basic Concepts and Phenomena - 716.1 Information Theory and Signal Processing - 901.1 Engineering Professional Aspects

DOI:10.3788/gzxb20174601.0112005

Funding details: Number: 61505248, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;

Funding text:The Natural Science Foundation of China(No.61505248).

Database:Compendex

Accession number:20173003979034

Title:Development of 808 nm Quasi-Continuous Wave Laser Diode Bar with 600 W Output Power

Authors:Wang, Zhenfu (1); Li, Te (1); Yang, Guowen (1, 2); Song, Yunfei (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; Shaanxi; 710119, China; (2) Xi'an Lumcore Optoelectronics Technologies Co., Ltd., Xi'an; Shaanxi; 710077, China

Corresponding author:Yang, Guowen(yangguowen@opt.ac.cn)

Source title:Zhongguo Jiguang/Chinese Journal of Lasers

Abbreviated source title:Zhongguo Jiguang

Volume:44

Issue:6

Issue date:June 10, 2017

Publication year:2017

Article number:0601004

Language:Chinese

ISSN:02587025

CODEN:ZHJIDO

Document type:Journal article (JA)

Publisher:Science Press

Abstract:Design of 808 nm epitaxial layer structure is demonstrated, and a very low internal loss less than 0.5 cm-1is achieved. The quasi-continuous wave (QCW) high peak power 808 nm laser bar is fabricated with this high efficiency wafer. The bar with a filled factor of 85%, emitter number of 60, emitting width of 140 μm, and cavity length of 2 mm is measured at QCW mode. The peak power is 613 W with a slope efficiency of 1.34 W/A (drive current of 500 A, pulse width of 200 μs, repetition frequency of 400 Hz, duty ratio of 8%). The peak wavelength is about 807.46 nm with a spectral half-width full-maximum of 2.88 nm. The lifetime test is also demonstrated at QCW 300 W (8% duty ratio), the lifetime of five bars is all above 3.63×109shot, the current fluctuation is lower than 10% at the constant power of 300 W, which satisfies commercial application requirement. © 2017, Chinese Lasers Press. All right reserved.

Number of references:15

Main heading:Continuous wave lasers

Controlled terms:Efficiency - Laser optics - Optical losses

Uncontrolled terms:Commercial applications - Current fluctuations - Epitaxial layer structures - Lifetime - Peak power - Quasi-continuous waves - Repetition frequency - Slope efficiencies

Classification code:741 Light, Optics and Optical Devices - 744.1 Lasers, General - 913.1 Production Engineering

Numerical data indexing:Electric_Current 5.00e+02A, Frequency 4.00e+02Hz, Percentage 1.00e+01%, Percentage 8.00e+00%, Percentage 8.50e+01%, Power 3.00e+02W, Power 6.00e+02W, Power 6.13e+02W, Size 1.40e-04m, Size 2.00e-03m, Size 2.88e-09m, Size 8.07e-07m, Size 8.08e-07m, Time 2.00e-04s

DOI:10.3788/CJL201744.0601004

Database:Compendex

Accession number:20171703607490

Title:The influence of temperature and pressure on primary mirror surface figure and image quality of the 1.2m colorful schlieren system

Authors:Xu, Songbo (1); Wang, Peng (1); Chen, Lei (2); Wang, Jing (1); Xie, Yong-Jun (1)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics of CAS, Xi'an; 710072, China; (2) China Aerodynamics Research and Development Center, Mianyang; 621000, China

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

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:10256

Part number:1 of 1

Issue title:Second International Conference on Photonics and Optical Engineering

Issue date:2017

Publication year:2017

Article number:102565D

Language:English

ISSN:0277786X

E-ISSN:1996756X

CODEN:PSISDG

Document type:Conference article (CA)

Conference name:2nd International Conference on Photonics and Optical Engineering

Conference date:October 14, 2016

Conference location:Xi'an, China

Conference code:127345

Publisher:SPIE

Abstract:In this paper, a colorful schlieren system without any protecting windows was introduced which results in that the 1.2m primary mirror would directly be confronted with the pressure and temperature variation from the wind tunnel test. To achieve a good schlieren image under the wind tunnel test working condition of a wide temperature fluctuation range (-10°C to 50°C) as well as a pressure (2kPa), a new flexible support method of the primary mirror was strategically designed. A finite element model of the primary mirror combined with its supporting structures was built up to approach the surface figure of the primary mirror under the complex working conditions as gravity, temperature variation, and pressure. The schlieren images due to the change of the primary mirror surface figure were simulated by Light-tools software. It was found that the temperature changing and pressure would lead to the variation of the surface figure of the primary mirror surface figure and therefore, results in the changing of the quality of simulated schlieren images. © 2017 SPIE.

Number of references:9

Main heading:Optical testing

Controlled terms:Finite element method - Mirrors - Photonics - Schlieren systems - Structures (built objects) - Temperature distribution - Wind stress - Wind tunnels

Uncontrolled terms:Pressure and temperature - Primary mirrors - Supporting structure - Surface figure - Temperature and pressures - Temperature changing - Temperature fluctuation - Temperature variation

Classification code:443.1 Atmospheric Properties - 641.1 Thermodynamics - 651.2 Wind Tunnels - 741.3 Optical Devices and Systems - 742.2 Photographic Equipment - 921.6 Numerical Methods

Numerical data indexing:Pressure 2.00e+03Pa, Size 1.20e+00m, Temperature 2.63e+02K to 3.23e+02K

DOI:10.1117/12.2247935

Database:Compendex

Accession number:20174804480176

Title:Superfluidicity in an optical lattice with a PT symmetric defect

Authors:Zhang, Lingxuan (1, 2, 3); Zhang, Wenfu (3); Ge, Li (1, 2)

Author affiliation:(1) College of Staten Island, CUNY, NY, United States; (2) Graduate School, CUNY, NY, United States; (3) Xi'an Institute of Optics and Precision Mechanics, CAS, Xi'an, Shaanxi, China

Corresponding author:Ge, Li(li.ge@csi.cuny.edu)

Source title:Optics InfoBase Conference Papers

Abbreviated source title:Opt. InfoBase Conf. Pap

Volume:Part F66-FiO 2017

Part number:1 of 1

Issue title:Frontiers in Optics, FiO 2017

Issue date:2017

Publication year:2017

Language:English

ISBN-13:9781557528209

Document type:Conference article (CA)

Conference name:Frontiers in Optics, FiO 2017

Conference date:September 18, 2017 - September 21, 2017

Conference location:Washington, DC, United states

Conference code:137738

Publisher:OSA - The Optical Society

Abstract:We consider a nonlinear waveguide array with a PT symmetric defect at the center of a parabolic potential. The oscillations of a coherent state persist without dissipation, if its velocity is below a critical value. © OSA 2017.

Number of references:4

Page count:2

Main heading:Optical lattices

Controlled terms:Defects - Waveguides

Uncontrolled terms:Coherent state - Critical value - Nonlinear waveguide arrays - Parabolic potential

Classification code:714.3 Waveguides - 744.8 Laser Beam Interactions - 951 Materials Science

DOI:10.1364/FIO.2017.JTu3A.89

Database:Compendex

Accession number:20175004524946

Title:N-vector inertial navigation mechanization algorithm for transpolar aircraft

Authors:Zhang, Guang-Dong (1); Yan, Gong-Min (2); Weng, Jun (2); Yang, Hong-Tao (1)

Author affiliation:(1) Xi'an Institute of Optics And Precision Mechanics Chinese Academy of Sciences, Xi'an; 710119, China; (2) School of Automation, Northwestern Polytechnical University, Xi'an; 710129, China

Source title:Zhongguo Guanxing Jishu Xuebao/Journal of Chinese Inertial Technology

Abbreviated source title:Zhongguo Guanxing Jishu Xuebao

Volume:25

Issue:5

Issue date:October 1, 2017

Publication year:2017

Pages:606-610 and 617

Language:Chinese

ISSN:10056734

Document type:Journal article (JA)

Publisher:Editorial Department of Journal of Chinese Inertial Technology

Abstract:The classical mechanization working could not confirm its position and heading in the circumpolar latitude area. For overcoming this problem, the normal vector inertial navigation basing on earth-fixed frame is presented. This approach uses a normal vector instead of latitude/longitude to finish updating of position. It could achieve navigation requirement world-wide. The n-vector mechanization error equations are derived, which can be used in the design of integrated navigation systems. The simulation could test and verify the error characteristics of n-vector mechanization. The n-vector mechanization offers the solution to transpolar aircraft. The reason of the navigation error saltation near the pole area is explained. © 2017, Editorial Department of Journal of Chinese Inertial Technology. All right reserved.

Number of references:11

Main heading:Air navigation

Controlled terms:Errors - Inertial navigation systems - Machinery - Mechanization - Navigation - Vectors

Uncontrolled terms:Earth-fixed frames - Error characteristics - Error equation - Inertial navigations - Integrated navigation systems - Navigation error - Normal vector - Test and verify

Classification code:431.5 Air Navigation and Traffic Control - 601 Mechanical Design - 921.1 Algebra

DOI:10.13695/j.cnki.12-1222/o3.2017.05.009

Database:Compendex

Accession number:20174404315730

Title:Effects of doping SiO<inf>2</inf>on the defect's change in B<inf>2</inf>O<inf>3</inf>-containing phosphate based laser glasses used for high energy UV lasers

Authors:Sun, Mengya (1, 2); Duan, Zhanjun (3); 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; (3) Department of Systems Engineering, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences (CAS), Xi'an; 710119, China

Corresponding author:Wang, Pengfei(pfwang@opt.ac.cn)

Source title:Optical Materials Express

Abbreviated source title:Opt. Mater. Express

Volume:7

Issue:11

Issue date:2017

Publication year:2017

Article number:307525

Language:English

E-ISSN:21593930

Document type:Journal article (JA)

Publisher:OSA - The Optical Society

Abstract:The introduction of SiO<inf>2</inf>affects the glass's micro-structure and micro-defects as well as the corresponding optical and physical properties of the B<inf>2</inf>O<inf>3</inf>-containing multicomponent phosphate glasses. The addition of SiO<inf>2</inf>increases the transition temperature and causes shifts of the UV cut-offwavelength (λcut-off). The changes of λcut-offare closely related to the PO<inf>3</inf>-EC and PO<inf>4</inf>-EC defect centers that are associated with the Q2tetrahedral in phosphate chains. The corresponding variations of Q2units can also be found in the Raman, XPS, and31P MAS-NMR spectra. With increasing the content of SiO<inf>2</inf>, the ratio of nonbridging oxygen (associated with Q2units) is gradually decreased down to a critical level when SiO<inf>2</inf>/B<inf>2</inf>O<inf>3</inf>ratio is 4/1.5, whereas the ratio of non-bridging oxygen increases when SiO<inf>2</inf>/B<inf>2</inf>O<inf>3</inf>ratio is larger than 4/1.5, which suggests that the doping SiO<inf>2</inf>can influence the concentration of PO<inf>3</inf>-EC and PO<inf>4</inf>-EC defects. Those results can be better obtained when the sample is exposed to gamma irradiation. As the SiO<inf>2</inf>content increased gradually up to 4/1.5, the concentration of the PO<inf>3</inf>-EC defects declined, while the concentration of PO<inf>4</inf>-EC and the POHC defects increased when considering the irradiation dose, indicating that the addition of SiO<inf>2</inf>can regulate the structure-related defects in phosphate based glasses. © 2017 Optical Society of America.

Number of references:22

Main heading:Silica

Controlled terms:Defects - Glass - High energy lasers - Irradiation - Nuclear magnetic resonance spectroscopy - Oxygen

Uncontrolled terms:Gamma irradiation - Irradiation dose - Multicomponents - Non-bridging oxygen - Phosphate based glass - Phosphate chain - Phosphate glass - Structure-related

Classification code:744.1 Lasers, General - 804 Chemical Products Generally - 812.3 Glass - 951 Materials Science

DOI:10.1364/OME.7.004111

Funding details: Number: 61307046, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61775235, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;

Funding text:National Natural Science Foundation of China (NSFC No. 61775235, 61307046); Natural Science Basic Research Project in Shaanxi Province (2015JM6315); West Young Scholars Program of the Chinese Academy of Sciences (XAB2016A08); and Youth Innovation Promotion Association CAS (2017446), China.

Database:Compendex

Accession number:20180404671116

Title:Design of imaging circuitry of space CCD camera based on FPGA

Authors:Liu, Meiying (1, 2); Wen, Desheng (1); Wang, Hu (1); Liu, Yang (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; (2) University of Chinese Academy of Sciences 19 a Yuquan Rd, Shijingshan District, Beijing; 100049, 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:10462

Part number:1 of 1

Issue title:AOPC 2017: Optical Sensing and Imaging Technology and Applications

Issue date:2017

Publication year:2017

Article number:104621M

Language:English

ISSN:0277786X

E-ISSN:1996756X

CODEN:PSISDG

ISBN-13:9781510614055

Document type:Conference article (CA)

Conference name:Applied Optics and Photonics China: Optical Sensing and Imaging Technology and Applications, AOPC 2017

Conference date:June 4, 2017 - June 6, 2017

Conference location:Beijing, China

Conference code:133396

Sponsor:Chinese Society for Optical Engineering; The Society of Photo-Optical Instrumentation Engineers (SPIE)

Publisher:SPIE

Abstract:A imaging system of area-Array CCD cameras based on FPGA was designed. The overall structure and design of the system was introduced in detail. According to the working mode and driving timing requirements of this CCD image sensor, the driving schedule under the control of FPGA was designed. The working mode and parameters of such an imaging system were aligned with the control signals in accordance with the general requirements of space CCD cameras. With FPGA device as the platform of hardware design, the hardware of integrated timing and control system was described in VHDL language. The A/D converter AD9945 based on the correlated double sampling was used to realize the analog-digital (A/D) conversion of ICX285AL output signals. The XQR2V3000-4CG717V developed by Xilinx was chosen to accomplish the design of this hardware circuit. Through simulation, the correctness of driving schedule was verified, thus preparing necessary hardware for the final development of space area-Array CCD cameras with high performance. © 2017 SPIE.

Number of references:9

Main heading:CCD cameras

Controlled terms:Analog to digital conversion - Computer hardware description languages - Field programmable gate arrays (FPGA) - Hardware - Imaging systems - Integrated circuit design - Timing circuits

Uncontrolled terms:CCD image sensors - Correlated double sampling - Driving circuits - Hardware circuits - Hardware design - Space arrays - Space CCD cameras - Timing requirements

Classification code:605 Small Tools and Hardware - 713.4 Pulse Circuits - 714.2 Semiconductor Devices and Integrated Circuits - 721.2 Logic Elements - 723.1.1 Computer Programming Languages - 746 Imaging Techniques

DOI:10.1117/12.2284098

Funding details: Number: 61105017, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;

Funding text:This work has been supported by: National Natural Science Foundation of China under the contract No.61105017.

Database:Compendex

Accession number:20175104558227

Title:Demonstration of a mid-infrared NO molecular Faraday optical filter

Authors:Wu, Kuijun (1); Feng, Yutao (2); Li, Juan (2); Yu, Guangbao (1); Liu, Linmei (1); Xiong, Yuanhui (1); Li, Faquan (1)

Author affiliation:(1) State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan National Laboratory for Optoelectronics, Wuhan; 430071, China; (2) Key Laboratory of Spectral Imaging Technology of Chinese Academy of Sciences, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi’an; 710119, China

Corresponding author:Li, Faquan(lifaquan@wipm.ac.cn)

Source title:Optics Express

Abbreviated source title:Opt. Express

Volume:25

Issue:25

Issue date:December 11, 2017

Publication year:2017

Pages:30916-30930

Language:English

E-ISSN:10944087

Document type:Journal article (JA)

Publisher:OSA - The Optical Society

Abstract:A molecular Faraday optical filter (MFOF) working in the mid-infrared region is realized for the first time. NO molecule was used as the working material of the MFOF for potential applications in atmospheric remote sensing and combustion diagnosis. We develop a complete theory to describe the performance of MFOF by taking both Zeeman absorption and Faraday rotation into account. We also record the Faraday rotation transmission (FRT) signal using a quantum cascade laser over the range of 1,820 cm−1to 1,922 cm−1and calibrate it by using a 101.6 mm long solid germanium etalon with a free spectral range of 0.012 cm−1. Good agreement between the simulation results and experimental data is achieved. The NO-MFOF’s transmission characteristics as a function of magnetic field and pressure are studied in detail. Both Comb-like FRT spectrum and single branch transmission spectrum are obtained by changing the magnetic field. The diversity of FRT spectrum expands the range of potential applications in infrared optical remote sensing. This filtering method can also be extended to the lines of other paramagnetic molecules. © 2017 Optical Society of America.

Number of references:39

Main heading:Remote sensing

Controlled terms:Bandpass filters - Infrared devices - Magnetic fields - Molecules - Optical filters - Quantum cascade lasers

Uncontrolled terms:Atmospheric remote sensing - Combustion diagnosis - Free spectral range - Mid-infrared regions - Optical remote sensing - Paramagnetic molecules - Transmission characteristics - Transmission spectrums

Classification code:701.2 Magnetism: Basic Concepts and Phenomena - 703.2 Electric Filters - 741.3 Optical Devices and Systems - 744.1 Lasers, General - 931.3 Atomic and Molecular Physics

Numerical data indexing:Size 1.02e-01m

DOI:10.1364/OE.25.030916

Funding details: Number: -, Acronym: AXA, Sponsor: AXA Research Fund;Number: 2017YFC0211900, Acronym: -, Sponsor: Changjiang Scholar Program of Chinese Ministry of Education;Number: LSIT201701D, Acronym: CAS, Sponsor: Chinese Academy of Sciences;Number: -, Acronym: ITL, Sponsor: Information Technology Laboratory;Number: -, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61705253, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;

Funding text:National Key R&D Program of China (2017YFC0211900); National Natural Science Foundation of China (NSFC) (61705253); Open Research Fund of Key Laboratory of Spectral Imaging Technology, Chinese Academy of Sciences (LSIT201701D). The authors gratefully acknowledge helpful and informative discussions with Gong Shunsheng on experimental details of this work.

Database:Compendex

Accession number:20171803618683

Title:Photonic microwave and mm-wave mixer for multichannel fiber transmission

Authors:Gao, Yongsheng (1, 2); Wen, Aijun (2, 3); Zhang, Wu (2, 3); Wang, Yong (2, 3); Zhang, Huixing (2, 4)

Author affiliation:(1) School of Electronics and Information, Northwestern Polytechnical University, Xi'an; 710072, China; (2) State Key Laboratory of Integrated Services Networks, Xidian University, Xi'an; 710071, China; (3) Collaborative Innovation Center of Information Sensing and Understanding, Xidian University, Xi'an; 710071, China; (4) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China

Source title:Journal of Lightwave Technology

Abbreviated source title:J Lightwave Technol

Volume:35

Issue:9

Issue date:May 1, 2017

Publication year:2017

Pages:1566-1574

Article number:7814218

Language:English

ISSN:07338724

CODEN:JLTEDG

Document type:Journal article (JA)

Publisher:Institute of Electrical and Electronics Engineers Inc.

Abstract:Photonic microwave and millimeter wave (mm-wave) frequency conversion is a promising technique for future electronic systems due to its large bandwidth, electromagnetic immunity, and compatibility with other optical systems. However, the conversion gain of a photonic mixer is often low and may be further reduced by the fiber dispersion. In this paper, a photonic microwave and mm-wave mixer using an integrated polarization division multiplexing Mach-Zehnder modulator (PDM-MZM) is proposed, which exhibits the merits of high conversion gain, high purity, and compensation of the power fading in multichannel fiber transmission. By suppressing the optical carrier and optimizing the modulation index, the conversion gain and isolation are respectively improved by 27.6 and 55.3 dB in the experiment. After power compensation, high and relatively flat microwave and mm-wave signals from 12 to 45 GHz are obtained after transmission over 25-km fiber. In addition, an up-converted 38-GHz mm-wave signal carrying 100-MSym/s 16-quadrature amplitude modulation (16QAM) vector signal is simultaneously transmitted over four channels with different fiber length (back to back, 4, 25, and 50 km). The power fading in each channel can be independently compensated, and good electrical spectra, constellation diagrams, and receiver sensitivity are obtained. © 2017 IEEE.

Number of references:31

Main heading:Microwave power transmission

Controlled terms:Dispersion (waves) - Fibers - Light modulators - Microwave devices - Microwaves - Millimeter waves - Modulation - Optical communication - Optical frequency conversion - Photonics

Uncontrolled terms:Conversion gain - Fiber dispersion - Microwave mixers - Microwave Photonics - Multi channel - power fading

Classification code:706.1.1 Electric Power Transmission - 711 Electromagnetic Waves - 717.1 Optical Communication Systems - 741 Light, Optics and Optical Devices

Numerical data indexing:Decibel 2.76e+01dB, Decibel 5.53e+01dB, Frequency 1.20e+10Hz to 4.50e+10Hz, Size 2.50e+04m, Size 5.00e+04m

DOI:10.1109/JLT.2017.2652122

Funding details: Number: SKLST201407, Acronym: CAS, Sponsor: Chinese Academy of Sciences;Number: 61306061, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61674119, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;

Funding text:This work was supported in part by the China 111 Project under Grant B08038, in part by the National Natural Science Foundation of China under Grants 61306061 and 61674119, and in part by the Open Research Fund of State Key Laboratory of Transient Optics and Photonics, Chinese Academy of Sciences under Grant SKLST201407.

Database:Compendex

Accession number:20171403539925

Title:Stable and uniform multiwavelength erbium-doped fiber laser based on a microfiber knot resonator with a Sagnac loop reflector

Authors:Xu, Yiping (1); Ren, Liyong (2); Ma, Chengju (3); Kong, Xudong (2); Ren, Kaili (2); Song, Feng (1, 4)

Author affiliation:(1) School of Physics and Optoelectronic Engineering, Yangtze University, Jingzhou; 434023, 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 Science, Xi’an Shiyou University, Xi’an; 710065, China; (4) School of Physics, Nankai University, Tianjin; 300071, China

Corresponding author:Xu, Yiping(ypxu@yangtzeu.edu.cn)

Source title:Journal of Optics (India)

Abbreviated source title:J. Opt.

Volume:46

Issue:4

Issue date:December 1, 2017

Publication year:2017

Pages:420-424

Language:English

ISSN:09728821

E-ISSN:09746900

CODEN:JOPTBQ

Document type:Journal article (JA)

Publisher:Optical Society of India

Abstract:In this paper, we proposed and demonstrated a stable and uniform multiwavelength erbium-doped fiber laser (EDFL) by using of the filer action of microfiber knot resonator (MKR) with a Sagnac loop reflector. By embedding the resonator to the ring cavity of the EDFL by means of a circulator, a multiwavelength EDFL is created. The number of the lasing lines with different wavelengths within 3-dB bandwidth is up to 42, the linewidth of each lasing line is about 0.05 nm and the side-mode suppression ratio is about 45 dB. The results demonstrate that the MKR with a Sagnac loop reflector can be employed as a high performance comb filter to realize a stable and uniform multiwavelength fiber laser. © 2017, The Optical Society of India.

Number of references:33

Main heading:Optical fiber communication

Controlled terms:Erbium - Fiber lasers - Optical fibers - Reflection - Resonators - Ring lasers

Uncontrolled terms:Fiber communications - Micro-fiber - Micro-fiber knot resonators - Multi wavelength fiber laser - Multiwavelength - Multiwavelength erbium-doped fiber lasers - Ring cavities - Side mode suppression ratios

Classification code:547.2 Rare Earth Metals - 717.1 Optical Communication Systems - 741.1.2 Fiber Optics - 744 Lasers - 744.4 Solid State Lasers

Numerical data indexing:Decibel 3.00e+00dB, Decibel 4.50e+01dB, Size 5.00e-11m

DOI:10.1007/s12596-017-0394-1

Funding details: Number: 2016CFC767, Acronym: -, Sponsor: Natural Science Foundation of Hubei Province;Number: 61275149, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61535015, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61605018, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;

Funding text:This work was supported in part by the National Natural Science Foundation of China under Grant Nos. 61275149, 61535015 and 61605018, the Hubei Natural Science Foundation of China under Grant No. 2016CFC767, the Doctoral Scientific Research Startup Foundation of Yangtze University under Grant No. 801080010128, and the Open Research Fund of State Key Laboratory of Transient Optics and Photonics under Grant No. SKLST201612.

Database:Compendex

Accession number:20171403517382

Title:Small-size streak tube for imaging lidar

Authors:Tian, Jinshou (1); Hui, Dandan (1, 2); Luo, Duan (1, 2); Wang, Tao (1); Zhang, Jun (3); Chen, Shaorong (3); Jia, Hui (3)

Corresponding author:Tian, Jinshou(tianjs@opt.ac.cn)

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

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:10328

Part number:1 of 1

Issue title:Selected Papers from the 31st International Congress on High-Speed Imaging and Photonics

Issue date:2017

Publication year:2017

Article number:103280O

Language:English

ISSN:0277786X

E-ISSN:1996756X

CODEN:PSISDG

ISBN-13:9781510611009

Document type:Conference article (CA)

Conference name:31st International Congress on High-Speed Imaging and Photonics

Conference date:November 6, 2016 - November 10, 2016

Conference location:Osaka, Japan

Conference code:126843

Publisher:SPIE

Abstract:Streak tube imaging lidar, as a novel flash lidar, due to its advantages of higher resolution for low contrast conditions, compact and rugged physical configurations, small image distortions owing to its scannerless design, and higher image update rates, has immense potential to provide 3D single-laser-pulse scannerless imaging, 3D multispectral imaging, 3D multispectral fluorescence imaging, and 3D polarimetry. In order to further reduce the size and enlarge the field of view (FOV) of the lidar system, we designed a super small-size, large photocathode area and meshless streak tube with spherical cathode and screen. With the aid of Computer Simulation Technology Software package (CST), a model of the streak tube was built, and its predominant performances were illustrated via tracking electron trajectories. Spatial resolution of the streak tube reaches 20lp/mm over the entire 028mm photocathode working area, and its temporal resolution is better than 30ps. Most importantly, the external dimensions of the streak tube are only 050mmx100mm. And several prototypes are already manufactured on the basis of the computer design. © 2017 SPIE.

Number of references:14

Main heading:Fluorescence imaging

Controlled terms:Computer software - High speed cameras - Imaging systems - Optical radar - Photocathodes - Streak cameras - Tubes (components)

Uncontrolled terms:Computer simulation technology - Electron trajectories - Large photocathode area - Meshless - Multispectral imaging - Streak tube imaging lidars - Super small-size - Temporal resolution

Classification code:619.1 Pipe, Piping and Pipelines - 714.1 Electron Tubes - 716.2 Radar Systems and Equipment - 723 Computer Software, Data Handling and Applications - 742.2 Photographic Equipment - 746 Imaging Techniques

Numerical data indexing:Size 2.80e-02m, Time 3.00e-11s

DOI:10.1117/12.2269063

Database:Compendex

Accession number:20172403752852

Title:High power vertical stacked diode laser development using macro-channel water cooling and hard solder bonding technology

Authors:Yu, Dongshan (1); Liang, Xuejie (1); Wang, Jingwei (1); Li, Xiaoning (1); Nie, Zhiqiang (2); Liu, Xingsheng (1, 2)

Author affiliation:(1) Focuslight Technologies Inc, No. 56 Zhangba liu Road, 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, Xi'an Hi-Tech Industrial Development Zone, No. 17 Xinxi Road, New Industrial Park, 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:10123

Part number:1 of 1

Issue title:Novel In-Plane Semiconductor Lasers XVI

Issue date:2017

Publication year:2017

Article number:101231A

Language:English

ISSN:0277786X

E-ISSN:1996756X

CODEN:PSISDG

ISBN-13:9781510606876

Document type:Conference article (CA)

Conference name:Novel In-Plane Semiconductor Lasers XVI 2017

Conference date:January 30, 2017 - February 2, 2017

Conference location:San Francisco, CA, United states

Conference code:1279611

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

Publisher:SPIE

Abstract:A novel marco channel cooler (MaCC) has been developed for packaging high power diode vertical stacked (HPDL) lasers, which eliminates many of the issues in commercially-available copper micro-channel coolers (MCC). The MaCC coolers, which do not require deionized water as coolant, were carefully designed for compact size and superior thermal dissipation capability. Indium-free packaging technology was adopted throughout product design and fabrication process to minimize the risk of solder electromigration and thermal fatigue at high current density and long pulse width under QCW operation. Single MaCC unit with peak output power of up to 700W/bar at pulse width in microsecond range and 200W/bar at pulse width in millisecond range has been recorded. Characteristic comparison on thermal resistivity, spectrum, near filed and lifetime have been conducted between a MaCC product and its counterpart MCC product. QCW lifetime test (30ms 10Hz, 30% duty cycle) has also been conducted with distilled water as coolant. A vertical 40-MaCC stack product has been fabricated, total output power of 9 kilowatts has been recorded under QCW mode (3ms, 30Hz, 9% duty cycle). © 2017 SPIE.

Number of references:13

Main heading:Semiconductor lasers

Controlled terms:Chip scale packages - Coolants - Cooling systems - Deionized water - Diodes - Gold alloys - Power semiconductor diodes - Product design - Tin alloys

Uncontrolled terms:Distilled water - Gold tin alloys - High current densities - High power diode laser - Indium-free - Microchannel coolers - Packaging technologies - Thermal dissipation

Classification code:445.1 Water Treatment Techniques - 546.2 Tin and Alloys - 547.1 Precious Metals - 714.2 Semiconductor Devices and Integrated Circuits - 744.4.1 Semiconductor Lasers - 803 Chemical Agents and Basic Industrial Chemicals - 913.1 Production Engineering

Numerical data indexing:Frequency 1.00e+01Hz, Frequency 3.00e+01Hz, Percentage 3.00e+01%, Percentage 9.00e+00%, Power 9.00e+03W, Time 3.00e-03s

DOI:10.1117/12.2250692

Database:Compendex

Accession number:20174104242975

Title:Unsupervised large graph embedding

Authors:Nie, Feiping (1); Zhu, Wei (1); Li, Xuelong (2)

Author affiliation:(1) School of Computer Science, Center for OPTical IMagery Analysis and Learning (OPTIMAL), Northwestern Polytechnical University, Xi'an, Shaanxi; 710072, 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

Source title:31st AAAI Conference on Artificial Intelligence, AAAI 2017

Abbreviated source title:AAAI Conf. Artif. Intell., AAAI

Part number:1 of 1

Issue title:31st AAAI Conference on Artificial Intelligence, AAAI 2017

Issue date:2017

Publication year:2017

Pages:2422-2428

Language:English

Document type:Conference article (CA)

Conference name:31st AAAI Conference on Artificial Intelligence, AAAI 2017

Conference date:February 4, 2017 - February 10, 2017

Conference location:San Francisco, CA, United states

Conference code:130407

Sponsor:Amazon; Artificial Intelligence; Baidu; et al.; IBM; Tencent

Publisher:AAAI press

Abstract:There are many successful spectral based unsupervised dimensionality reduction methods, including Laplacian Eigenmap (LE), Locality Preserving Projection (LPP), Spectral Regression (SR), etc. LPP and SR are two different linear spectral based methods, however, we discover that LPP and SR are equivalent, if the symmetric similarity matrix is doubly stochastic, Positive Semi-Definite (PSD) and with rank p, where p is the reduced dimension. The discovery promotes us to seek low-rank and doubly stochastic similarity matrix, we then propose an unsupervised linear dimensionality reduction method, called Unsupervised Large Graph Embedding (ULGE). ULGE starts with similar idea as LPP, it adopts an efficient approach to construct similarity matrix and then performs spectral analysis efficiently, the computational complexity can reduce to O(ndm), which is a significant improvement compared to conventional spectral based methods which need O(n2d) at least, where n, d and m are the number of samples, dimensions and anchors, respectively. Extensive experiments on several public available data sets demonstrate the efficiency and effectiveness of the proposed method. Copyright © 2017, Association for the Advancement of Artificial Intelligence (www.aaai.org). All rights reserved.

Number of references:25

Main heading:Matrix algebra

Controlled terms:Artificial intelligence - Spectrum analysis - Stochastic systems

Uncontrolled terms:Dimensionality reduction method - Doubly stochastic - Laplacian eigenmap - Linear dimensionality reduction - Locality preserving projections - Number of samples - Similarity matrix - Spectral regressions

Classification code:723.4 Artificial Intelligence - 921.1 Algebra - 961 Systems Science

Database:Compendex

Accession number:20175104549161

Title:Deep temporal architecture for audiovisual speech recognition

Authors:Tian, Chunlin (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, 19A Yuquanlu, Beijing; 100049, China

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

Source title:Communications in Computer and Information Science

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

Volume:771

Part number:1 of 3

Issue title:Computer Vision - 2nd CCF Chinese Conference, CCCV 2017, Proceedings

Issue date:2017

Publication year:2017

Pages:650-661

Language:English

ISSN:18650929

ISBN-13:9789811072987

Document type:Conference article (CA)

Conference name:2nd Chinese Conference on Computer Vision, CCCV 2017

Conference date:October 11, 2017 - October 14, 2017

Conference location:Tianjin, China

Conference code:208009

Publisher:Springer Verlag

Abstract:The Audiovisual Speech Recognition (AVSR) is one of the applications of multimodal machine learning related to speech recognition, lipreading systems and video classification. In recent and related work, increasing efforts are made in Deep Neural Network (DNN) for AVSR, moreover some DNN models including Multimodal Deep Autoencoder, Multimodal Deep Belief Network and Multimodal Deep Boltzmann Machine perform well in experiments owing to the better generalization and nonlinear transformation. However, these DNN models have several disadvantages: (1) They mainly deal with modal fusion while ignoring temporal fusion. (2) Traditional methods fail to consider the connection among frames in the modal fusion. (3) These models aren’t end-to-end structure. We propose a deep temporal architecture, which has not only classical modal fusion, but temporal modal fusion and temporal fusion. Furthermore, the overfitting and learning with small size samples in the AVSR are also studied, so that we propose a set of useful training strategies. The experiments show the superiority of our model and necessity of the training strategies in three datasets: AVLetters, AVLetters2, AVDigits. In the end, we conclude the work. © Springer Nature Singapore Pte Ltd. 2017.

Number of references:32

Main heading:Speech recognition

Controlled terms:Computer vision - Deep neural networks - Elastic constants - Mathematical transformations - Network architecture

Uncontrolled terms:Audio visual speech recognition - Deep belief networks - Deep boltzmann machines - Multi-modal - Non-linear transformations - Small size samples - Training strategy - Video classification

Classification code:723.5 Computer Applications - 751.5 Speech - 921.3 Mathematical Transformations - 931.2 Physical Properties of Gases, Liquids and Solids

DOI:10.1007/978-981-10-7299-4_54

Database:Compendex

Accession number:20173103998663

Title:A deep convolution neural network for object detection based

Authors:Yue, Qi (1, 2, 3); Ma, Caiwen (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; 100039, China; (3) Xi'an University of Posts and Telecomunications, Xi'an; 710121, China

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

Source title:Harbin Gongye Daxue Xuebao/Journal of Harbin Institute of Technology

Abbreviated source title:Harbin Gongye Daxue Xuebao

Volume:49

Issue:5

Issue date:May 30, 2017

Publication year:2017

Pages:159-164

Language:Chinese

ISSN:03676234

CODEN:HPKYAY

Document type:Journal article (JA)

Publisher:Harbin Institute of Technology

Abstract:Deep convolutional neural network (CNN) has too many parameters to initialize, and the usual random initialization method is easy to disappear of modified gradient and the problem of premature. The unsupervised PCA learning method is used to obtain oriented initialization parameters. And the gradient descendent method with exponential flexible momentum for updating free parameters of the network is proposed on the basis of analyzing the error propagation of the network. Image detection experiments are respectively carried out on pedestrian detection, and the results show that, compared with other artificial feature detection algorithms, this method can effectively improve target detection accuracy and the detection speed of this method is 20% faster than that of classical CNN; compared with homologous updating mechanism of other momentum, our method has faster convergence and smaller oscillation, and can improve the detection accuracy by 1.6%, 1.8% and 6.19% respectively in different depth models. © 2017, Editorial Board of Journal of Harbin Institute of Technology. All right reserved.

Number of references:15

Main heading:Deep neural networks

Controlled terms:Convolution - Image enhancement - Momentum - Neural networks - Object detection - Object recognition - Target tracking

Uncontrolled terms:Convolution neural network - Deep convolutional neural networks - Detection accuracy - Faster convergence - Feature detection algorithm - Initialization methods - Model optimization - Pedestrian detection

Classification code:716.1 Information Theory and Signal Processing - 723.2 Data Processing and Image Processing - 931.1 Mechanics

Numerical data indexing:Percentage 1.60e+00%, Percentage 1.80e+00%, Percentage 2.00e+01%, Percentage 6.19e+00%

DOI:10.11918/j.issn.0367-6234.201603145

Database:Compendex

Accession number:20181304967768

Title:Four-wave mixing photon pair generation statistics for a nonlinear microcavity with chaotic and pulsed excitation

Authors:Roztocki, Piotr (1); Kues, Michael (1, 2); Reimer, Christian (1); Little, Brent E. (3); Chu, Sai T. (4); Moss, David J. (1, 5); Morandotti, Roberto (1, 6, 7)

Author affiliation:(1) INRS-EMT, 1650 Boulevard Lionel-Boulet, Varennes; QC; J3X 1S2, Canada; (2) School of Engineering, University of Glasgow, Rankine Building, Oakfield Avenue, Glasgow; G12 8LT, United Kingdom; (3) Xi'an Institute of Optics and Precision Mechanics of CAS, Xi'an, China; (4) Department of Physics and Material Science, City University of Hong Kong, Tat Chee Avenue, Hong Kong; (5) Center for Microphotonics, Swinburne University of Technology, Hawthorn; VIC; 3122, Australia; (6) National Research University of Information Technologies, Mechanics and Optics, St. Petersburg, Russia; (7) Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu; 610054, China

Source title:2017 Conference on Lasers and Electro-Optics, CLEO 2017 - Proceedings

Abbreviated source title:Conf. Lasers. Electr.-Opt., Proc.

Volume:2017-January

Part number:1 of 1

Issue title:2017 Conference on Lasers and Electro-Optics, CLEO 2017 - Proceedings

Issue date:October 25, 2017

Publication year:2017

Pages:1-2

Language:English

ISBN-13:9781943580279

Document type:Conference article (CA)

Conference name:2017 Conference on Lasers and Electro-Optics, CLEO 2017

Conference date:May 14, 2017 - May 19, 2017

Conference location:San Jose, CA, United states

Conference code:131854

Sponsor:AdValue Photonics; American Elements - The Materials Science Company; Coherent; et al.; KMLabs - Leading in Ultrafast; MKS

Publisher:Institute of Electrical and Electronics Engineers Inc.

Abstract:We characterize four-wave mixing photon pair generation statistics in the chaotic pulsed regime associated with a self-locked nonlinear microcavity excitation scheme, and contrast these statistics against a pulsed actively mode-locked excitation. ©2017 IEEE

Number of references:4

Main heading:Four wave mixing

Controlled terms:Locks (fasteners) - Microcavities - Photons

Uncontrolled terms:Excitation schemes - Mode-locked - Photon pair generations - Pulsed excitation

Classification code:714 Electronic Components and Tubes - 931.3 Atomic and Molecular Physics

DOI:10.1364/CLEO_QELS.2017.FTu4D.3

Database:Compendex

Accession number:20163002627747

Title:The theoretical investigation of the impact of two-photon absorption and free-carrier absorption on phase-sensitive amplification in silicon waveguides

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, Chinese Academy of Science (CAS), Xi’an, China

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

Source title:Journal of Modern Optics

Abbreviated source title:J. Mod. Opt.

Volume:64

Issue:1

Issue date:January 2, 2017

Publication year:2017

Pages:93-99

Language:English

ISSN:09500340

E-ISSN:13623044

CODEN:JMOPEW

Document type:Journal article (JA)

Publisher:Taylor and Francis Ltd.

Abstract:We investigate the influence of two-photon absorption (TPA) and free-carrier absorption (FCA) on phase-sensitive amplification (PSA) process in a dispersion engineered silicon strip waveguide at the telecom wavelengths. The phase-dependent gain and phase-to-phase transfer functions as well as the phase regeneration capacity of PSA are numerically analysed. It is found that TPA and FCA will suppress the phase-sensitive extinction ratio (PER) and the efficiency of phase squeezing. Moreover, the phase regeneration capability of silicon waveguide-based PSA is investigated by comparing the regenerated signal waveforms at a different signal power with/without TPA and FCA. Our results have potential application in all-optical signal regeneration. © 2016 Informa UK Limited, trading as Taylor & Francis Group.

Number of references:31

Main heading:Luminescence of organic solids

Controlled terms:Four wave mixing - Optical signal processing - Photons - Silicon - Two photon processes - Waveguides

Uncontrolled terms:All-optical signal regeneration - Free carrier absorption - Non-linear optical - Parametric process - Phase transfer functions - Phase-sensitive amplifications - Theoretical investigations - Two photon absorption

Classification code:549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals - 714.3 Waveguides - 931.2 Physical Properties of Gases, Liquids and Solids - 931.3 Atomic and Molecular Physics

DOI:10.1080/09500340.2016.1208850

Database:Compendex

Accession number:20173404078688

Title:Filter-driven four wave mixing laser with a controllable repetition rate

Authors:Cooper, Andrew (1); Bao, Hualong (1); Di Lauro, Luigi (1); Rowley, Maxwell (1); Chu, Sai T. (2); Little, Brent E. (3); Morandotti, Roberto (4); Moss, David J. (5); Peccianti, Marco (1); Pasquazi, Alessia (1)

Author affiliation:(1) Emergent Photonics (Epic) Lab, Dept. of Physics and Astronomy, University of Sussex, BN1 9QH, United Kingdom; (2) City University of Hong Kong, Tat Chee Avenue, Hong Kong; (3) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Science, Xi'an, China; (4) INRS-EMT, 1650 Boulevard Lionel-Boulet, Varennes; QC; J3X 1S2, Canada; (5) Swinburne University of Technology, Hawthorn; VIC; 3122, Australia

Corresponding author:Cooper, Andrew(A.Cooper@sussex.ac.uk)

Source title:Optics InfoBase Conference Papers

Abbreviated source title:Opt. InfoBase Conf. Pap

Volume:Part F52-IPRSN 2017

Part number:1 of 1

Issue title:Advanced Photonics, IPRSN 2017

Issue date:2017

Publication year:2017

Language:English

ISBN-13:9781557528209

Document type:Conference article (CA)

Conference name:Advanced Photonics, IPRSN 2017

Conference date:July 24, 2017 - July 27, 2017

Conference location:New Orleans, LA, United states

Conference code:136878

Publisher:OSA - The Optical Society

Abstract:We demonstrate a robust control over the repetition rate of a micro-comb laser by using the Filter-Driven Four Wave Mixing scheme. Results show that the coherence can be kept during the whole process. © OSA 2017.

Number of references:7

Page count:3

Main heading:Four wave mixing

Controlled terms:Bandpass filters - Q switched lasers - Robust control

Uncontrolled terms:Controllable repetition rate - Repetition rate - Whole process

Classification code:703.2 Electric Filters - 731 Automatic Control Principles and Applications - 744.1 Lasers, General

DOI:10.1364/IPRSN.2017.IM4A.2

Database:Compendex

Accession number:20173504101270

Title:A Method for Achieving Super Resolution Vibrational Sum-Frequency Generation Microscopy by Structured Illumination

Authors:Li, Ya-Hui (1, 2, 3); Chen, Dan-Ni (2, 4, 5); Niu, Han-Ben (2, 4, 5)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Xi'an; 710119, China; (2) Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen; 518060, China; (3) University of Chinese Academy of Sciences, Beijing; 100049, China; (4) Shenzhen Key Laboratory of Biomedicine Engineering, Shenzhen University, Shenzhen; 518060, China; (5) Shenzhen Key Laboratory of Micro-Nano Measuring and Imaging in Biomedical Optics, College of Optoelectronic Engineering, Shenzhen University, Shenzhen; 518060, China

Source title:IEEE Photonics Journal

Abbreviated source title:IEEE Photon. J.

Volume:9

Issue:3

Issue date:June 2017

Publication year:2017

Article number:7931556

Language:English

ISSN:19430655

Document type:Journal article (JA)

Publisher:Institute of Electrical and Electronics Engineers Inc.

Abstract:A scheme was proposed to achieve wide-field vibrational sum-frequency generation (SFG) microscopy with subdiffraction-limited resolution in one dimension. In this approach, samples are illuminated with a structured visible field and a uniform IR field to induce vibrational sum-frequency generation. With five raw images acquired at five different phases of the visible stripe pattern, a super-resolved vibrational SFG (SR-SFG) image with the resolution triple to that of the original can be reconstructed. Theoretical framework describing the coherent image formation and reconstruction scheme for the SR-SFG imaging system was derived and carried out with numerical simulations to investigate its imaging performance. With a typical imaging system, the lateral resolution was improved from 390 nm of the conventional SFG imaging system, to around 130 nm of the SR-SFG imaging system. © 2009-2012 IEEE.

Number of references:18

Main heading:Image resolution

Controlled terms:Image reconstruction - Imaging systems - Interferometry - Nanophotonics - Spectroscopy

Uncontrolled terms:Coherent imaging - Imaging performance - Lateral resolution - Limited resolution - Nonlinear microscopy - Structured illumination - Theoretical framework - Vibrational sum-frequency generations

Classification code:741.1 Light/Optics - 746 Imaging Techniques - 941.4 Optical Variables Measurements

Numerical data indexing:Size 1.30e-07m, Size 3.90e-07m

DOI:10.1109/JPHOT.2017.2705124

Funding details: Number: -, Acronym: -, Sponsor: Mayday Fund;Number: 2012CB825802, Acronym: -, Sponsor: Basic Research Program of Jiangsu Province;Number: 2015CB352005, Acronym: -, Sponsor: Basic Research Program of Jiangsu Province;Number: -, Acronym: -, Sponsor: Guangzhou Science and Technology Program key projects;Number: JCYJ 20160308104404452, Acronym: -, Sponsor: Shenzhen Graduate School, Peking University;Number: 2012YQ15009203, Acronym: -, Sponsor: China Youth Development Foundation;Number: 61235012, Acronym: -, Sponsor: National Natural Science Foundation of China;Number: 61335001, Acronym: -, Sponsor: National Natural Science Foundation of China;

Funding text:Manuscript received March 5, 2017; revised May 8, 2017; accepted May 12, 2017. Date of publication May 18, 2017; date of current version June 21, 2017. This work was sponsored in part by the National Natural Science Foundation of China (NSFC) under Grant 61335001 and Grant 61235012, in part by the Special Funds of the Major Scientific Instruments Equipment Development of China under Grant 2012YQ15009203, in part by the National Basic Research Program of China under Grant 2015CB352005 and Grant 2012CB825802, in part by the Science and Technology Planning project of Shenzhen, China, under Grant JCYJ 20160308104404452. Corresponding author: Dan-Ni Chen (e-mail: danny@szu.edu.cn).

Database:Compendex

Accession number:20171703607548

Title:Application of linear CCD in tunnel crack detection

Authors:Jie, Liu (1, 2); Hua, Li (2); Xin, Jiang (2); Hemin, Chang (2)

Author affiliation:(1) University of Chinese, Academy of Sciences, Beijing; 100049, 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:10256

Part number:1 of 1

Issue title:Second International Conference on Photonics and Optical Engineering

Issue date:2017

Publication year:2017

Article number:102562Y

Language:English

ISSN:0277786X

E-ISSN:1996756X

CODEN:PSISDG

Document type:Conference article (CA)

Conference name:2nd International Conference on Photonics and Optical Engineering

Conference date:October 14, 2016

Conference location:Xi'an, China

Conference code:127345

Publisher:SPIE

Abstract:To meet the actual demand, the linear CCD technology is applied to tunnel crack detection, and an edge detection algorithm is proposed to measure the crack width. Firstly, the application form of linear CCD imaging technology in tunnel crack detection is introduced concretely in this paper. Then, the key influencing parameters of measurement are discussed. Finally, an edge detection algorithm based on the change of gray level in linear direction is proposed and it is verified by experiments. Experimental results indicated that the linear CCD imaging technology in tunnel crack detection could obtain measurement data quickly and improve the efficiency of tunnel cracks' measurement, and that the detection algorithm could be used for the crack width measuring. © 2017 SPIE.

Number of references:10

Main heading:Crack detection

Controlled terms:Edge detection - Photonics - Signal detection

Uncontrolled terms:Crack width - Detection algorithm - Edge detection algorithms - Influencing parameters - Linear CCD - Linear direction - Measurement data - Optical detection

Classification code:716.1 Information Theory and Signal Processing - 741.1 Light/Optics

DOI:10.1117/12.2257653

Database:Compendex

Accession number:20174404326316

Title:Imaging through a scattering medium based on spatial transmission matrix

Authors:Zhuang, Bin (1, 2); Xu, Chengfang (1, 2); Geng, Yi (1, 2); Zhao, Guangzhi (1, 2); Zhou, Libin (3); He, Zhengquan (1); Ren, Liyong (1)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Science, China; (2) University of Chinese Academy of Sciences, China; (3) Shaanxi University of Science and Technology, China

Corresponding author:He, Zhengquan(zhqhe@opt.ac.cn)

Source title:Optics InfoBase Conference Papers

Abbreviated source title:Opt. InfoBase Conf. Pap

Volume:Part F61-ECBO 2017

Part number:1 of 1

Issue title:European Conference on Biomedical Optics, ECBO 2017

Issue date:2017

Publication year:2017

Language:English

ISBN-13:9781557528209

Document type:Conference article (CA)

Conference name:European Conference on Biomedical Optics, ECBO 2017

Conference date:June 25, 2017 - June 29, 2017

Conference location:Munich, Germany

Conference code:137548

Sponsor:OSA; SPIE

Publisher:OSA - The Optical Society

Number of references:11

Page count:4

Main heading:Light transmission

Uncontrolled terms:Inhomogeneities - Object waves - Operating time - Optical imaging - Optical transmission matrix - Scattering medium - Spatial transmission - Transmitted waves

Classification code:741.1 Light/Optics

DOI:10.1117/12.2285014

Database:Compendex

Accession number:20173904206130

Title:Realization and testing of a deployable space telescope based on tape springs

Authors:Lei, Wang (1, 2); Li, Chuang (1); Zhong, Peifeng (1); Chong, Yaqin (1); Jing, Nan (1)

Author affiliation:(1) Xian Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, 17 Xinxi Road, Xian, Shaanxi; 710119, China; (2) Shaanxi Normal University, 620 Xichang'an Road, Xian, Shaanxi; 710119, China

Corresponding author:Li, Chuang(lichuang@opt.ac.cn)

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

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:10339

Part number:1 of 1

Issue title:Pacific Rim Laser Damage 2017: Optical Materials for High-Power Lasers

Issue date:2017

Publication year:2017

Article number:1033920

Language:English

ISSN:0277786X

E-ISSN:1996756X

CODEN:PSISDG

ISBN-13:9781510611238

Document type:Conference article (CA)

Conference name:Pacific Rim Laser Damage 2017: Optical Materials for High-Power Lasers

Conference date:May 21, 2017 - May 24, 2017

Conference location:Shanghai, China

Conference code:130514

Publisher:SPIE

Abstract:For its compact size and light weight, space telescope with deployable support structure for its secondary mirror is very suitable as an optical payload for a nanosatellite or a cubesat. Firstly the realization of a prototype deployable space telescope based on tape springs is introduced in this paper. The deployable telescope is composed of primary mirror assembly, secondary mirror assembly, 6 foldable tape springs to support the secondary mirror assembly, deployable baffle, aft optic components, and a set of lock-released devices based on shape memory alloy, etc. Then the deployment errors of the secondary mirror are measured with three-coordinate measuring machine to examine the alignment accuracy between the primary mirror and the deployed secondary mirror. Finally modal identification is completed for the telescope in deployment state to investigate its dynamic behavior with impact hammer testing. The results of the experimental modal identification agree with those from finite element analysis well. © 2017 SPIE.

Number of references:6

Main heading:Springs (components)

Controlled terms:Finite element method - Hammers - High power lasers - Laser damage - Locks (fasteners) - Mirrors - Nanosatellites - Optical materials - Shape memory effect - Space telescopes

Uncontrolled terms:Alignment accuracy - Deployable telescopes - Dynamic behaviors - Impact hammer testing - Modal identification - Support structures - Tape springs - Three-coordinate measuring machines

Classification code:601.2 Machine Components - 605.2 Small Tools, Unpowered - 655.2 Satellites - 741.3 Optical Devices and Systems - 744.1 Lasers, General - 744.8 Laser Beam Interactions - 921.6 Numerical Methods - 951 Materials Science

DOI:10.1117/12.2269968

Database:Compendex

Accession number:20180304654530

Title:Lightweight structure design for supporting plate of primary mirror

Authors:Wang, Xiao (1, 2); Wang, Wei (1); Liu, Bei (1, 2); Qu, Yan Jun (1, 2); Li, Xu Peng (1, 2)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Science, No.17, Xinxi Road, Xi'an; 710119, China; (2) University of Chinese, Academy of Science, Jingjia Road, Beijing; 100049, China

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

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:10463

Part number:1 of 1

Issue title:AOPC 2017: Space Optics and Earth Imaging and Space Navigation

Issue date:2017

Publication year:2017

Article number:104631O

Language:English

ISSN:0277786X

E-ISSN:1996756X

CODEN:PSISDG

ISBN-13:9781510614079

Document type:Conference article (CA)

Conference name:Applied Optics and Photonics China: Space Optics and Earth Imaging and Space Navigation, AOPC 2017

Conference date:June 4, 2017 - June 6, 2017

Conference location:Beijing, China

Conference code:133232

Sponsor:Chinese Society for Optical Engineering; The Society of Photo-Optical Instrumentation Engineers (SPIE)

Publisher:SPIE

Abstract:A topological optimization design for the lightweight technology of supporting plate of the primary mirror is presented in this paper. The supporting plate of the primary mirror is topologically optimized under the condition of determined shape, loads and environment. And the optimal structure is obtained. The diameter of the primary mirror in this paper is 450mm, and the material is SiC1. It is better to select SiC/Al as the supporting material. Six points of axial relative displacement can be used as constraints in optimization2. Establishing the supporting plate model and setting up the model parameters. After analyzing the force of the main mirror on the supporting plate, the model is applied with force and constraints. Modal analysis and static analysis of supporting plates are calculated. The continuum structure topological optimization mathematical model is created with the variable-density method. The maximum deformation of the surface of supporting plate under the gravity of the mirror and the first model frequency are assigned to response variable, and the entire volume of supporting structure is converted to object function. The structures before and after optimization are analyzed using the finite element method. Results show that the optimized fundamental frequency increases 29.85Hz and has a less displacement compared with the traditional structure. © 2017 SPIE.

Number of references:11

Main heading:Structural design

Controlled terms:Earth (planet) - Finite element method - Mirrors - Modal analysis - Plates (structural components) - Shape optimization - Silicon carbide - Structural optimization - Topology

Uncontrolled terms:Fundamental frequencies - Lightweight structure designs - Lightweight technology - Primary mirrors - Relative displacement - Topological optimization - Traditional structures - Variable density methods

Classification code:408.1 Structural Design, General - 408.2 Structural Members and Shapes - 741.3 Optical Devices and Systems - 804.2 Inorganic Compounds - 921 Mathematics

Numerical data indexing:Frequency 2.99e+01Hz, Size 4.50e-01m

DOI:10.1117/12.2285730

Database:Compendex

Accession number:20170603336429

Title:Adaptive Multimedia Data Forwarding for Privacy Preservation in Vehicular Ad-Hoc Networks

Authors:Xia, Yingjie (1); Chen, Wenzhi (1); Liu, Xuejiao (2); Zhang, Luming (3); Li, Xuelong (4); Xiang, Yang (5)

Author affiliation:(1) College of Computer Sciences, Zhejiang University, Hangzhou; 310027, China; (2) Institute of Service Engineering, Hangzhou Normal University, Hangzhou; 311121, China; (3) School of Computing, National University of Singapore, Singapore; 119077, Singapore; (4) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xian; 710119, China; (5) School of Information Technology, Deakin University, Burwood; VIC; 3125, Australia

Source title:IEEE Transactions on Intelligent Transportation Systems

Abbreviated source title:IEEE Trans. Intell. Transp. Syst.

Volume:18

Issue:10

Issue date:October 2017

Publication year:2017

Pages:2629-2641

Article number:7837606

Language:English

ISSN:15249050

Document type:Journal article (JA)

Publisher:Institute of Electrical and Electronics Engineers Inc.

Abstract:Vehicular ad-hoc networks (VANETs) have drawn much attention of researchers. The vehicles in VANETs frequently join and leave the networks, and therefore restructure the network dynamically and automatically. Forwarded messages in vehicular ad-hoc networks are primarily multimedia data, including structured data, plain text, sound, and video, which require access control with efficient privacy preservation. Ciphertext-policy attribute-based encryption (CP-ABE) is adopted to meet the requirements. However, solutions based on traditional CP-ABE suffer from challenges of the limited computational resources on-board units equipped in the vehicles, especially for the complex policies of encryption and decryption. In this paper, we propose a CP-ABE delegation scheme, which allows road side units (RSUs) to perform most of the computation, for the purpose of improving the decryption efficiency of the vehicles. By using decision tree to jointly optimize multiple factors, such as the distance from RSU, the communication and computational cost, the CP-ABE delegation scheme is adaptively activated based on the estimation of various vehicles decryption overhead. Experimental results thoroughly demonstrate that our scheme is effective and efficient for multimedia data forwarding in vehicular ad-hoc networks with privacy preservation. © 2017 IEEE.

Number of references:51

Main heading:Vehicular ad hoc networks

Controlled terms:Access control - Cryptography - Data privacy - Decision trees - Vehicle to vehicle communications - Vehicles

Uncontrolled terms:Adaptive multimedia - Attributed-based encryptions - Ciphertext-policy attribute-based encryptions - Computational resources - Encryption and decryption - Multimedia messages - Privacy preservation - Vehicular Adhoc Networks (VANETs)

Classification code:716 Telecommunication; Radar, Radio and Television - 723 Computer Software, Data Handling and Applications - 961 Systems Science

DOI:10.1109/TITS.2017.2653103

Database:Compendex

Accession number:5164666

Title:Reweighted Infrared Patch-Tensor Model with Both Nonlocal and Local Priors for Single-Frame Small Target Detection

Authors:Dai, Yimian (1); Wu, Yiquan (1, 2)

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

Corresponding author:Wu, Yiquan(nuaaimagestrong@163.com)

Source title:IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing

Abbreviated source title:IEEE J. Sel. Top. Appl. Earth Obs. Remote Sens.

Volume:10

Issue:8

Issue date:August 2017

Publication year:2017

Pages:3752-3767

Article number:7932858

Language:English

ISSN:19391404

E-ISSN:21511535

Document type:Journal article (JA)

Publisher:Institute of Electrical and Electronics Engineers

Abstract:Many state-of-the-art methods have been proposed for infrared small target detection. They work well on the images with homogeneous backgrounds and high-contrast targets. However, when facing highly heterogeneous backgrounds, they would not perform very well, mainly due to: 1) the existence of strong edges and other interfering components, 2) not utilizing the priors fully. Inspired by this, we propose a novel method to exploit both local and nonlocal priors simultaneously. First, we employ a new infrared patch-tensor (IPT) model to represent the image and preserve its spatial correlations. Exploiting the target sparse prior and background nonlocal self-correlation prior, the target-background separation is modeled as a robust low-rank tensor recovery problem. Moreover, with the help of the structure tensor and reweighted idea, we design an entrywise local-structure-adaptive and sparsity enhancing weight to replace the globally constant weighting parameter. The decomposition could be achieved via the elementwise reweighted higher order robust principal component analysis with an additional convergence condition according to the practical situation of target detection. Extensive experiments demonstrate that our model outperforms the other state-of-the-arts, in particular for the images with very dim targets and heavy clutters. © 2008-2012 IEEE.

Number of references:52

Controlled terms:detection method - image processing - numerical model - principal component analysis

Classification code:71.8.5.4 Remote sensing: numerical and image analysis

DOI:10.1109/JSTARS.2017.2700023

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

Funding text:This work was supported in part by the National Natural Science Foundation of China under Grant 61573183, and in part by Open Research Fund of Key Laboratory of Spectral Imaging Technology, Chinese Academy of Sciences under Grant LSIT201401.

Database:GEOBASE

Accession number:20165203170887

Title:Short-term prediction of UT1-UTC by combination of the grey model and neural networks

Authors:Lei, Yu (1, 2); Guo, Min (3); Hu, Dan-dan (3); Cai, Hong-bing (1, 2); Zhao, Dan-ning (1, 4); Hu, Zhao-peng (1, 4); Gao, Yu-ping (1, 2)

Author affiliation:(1) National Time Service Center, Chinese Academy of Sciences, Xi'an; Shaanxi; 710600, China; (2) Key Laboratory of Time and Frequency Primary Standards, Chinese Academy of Sciences, Xi'an; Shaanxi; 710600, China; (3) Xi'an Institute of Optics and Precision Mechanics, Xi'an; Shaanxi; 710119, China; (4) University of Chinese Academy of Sciences, Beijing; 100049, China

Corresponding author:Lei, Yu(leiyu@ntsc.ac.cn)

Source title:Advances in Space Research

Abbreviated source title:Adv. Space Res.

Volume:59

Issue:2

Issue date:January 15, 2017

Publication year:2017

Pages:524-531

Language:English

ISSN:02731177

E-ISSN:18791948

CODEN:ASRSDW

Document type:Journal article (JA)

Publisher:Elsevier Ltd

Abstract:UT1-UTC predictions especially short-term predictions are essential in various fields linked to reference systems such as space navigation and precise orbit determinations of artificial Earth satellites. In this paper, an integrated model combining the grey model GM(1, 1) and neural networks (NN) are proposed for predicting UT1-UTC. In this approach, the effects of the Solid Earth tides and ocean tides together with leap seconds are first removed from observed UT1-UTC data to derive UT1R-TAI. Next the derived UT1R-TAI time-series are de-trended using the GM(1, 1) and then residuals are obtained. Then the residuals are used to train a network. The subsequently predicted residuals are added to the GM(1, 1) to obtain the UT1R-TAI predictions. Finally, the predicted UT1R-TAI are corrected for the tides together with leap seconds to obtain UT1-UTC predictions. The daily values of UT1-UTC between January 7, 2010 and August 6, 2016 from the International Earth Rotation and Reference Systems Service (IERS) 08 C04 series are used for modeling and validation of the proposed model. The results of the predictions up to 30 days in the future are analyzed and compared with those by the GM(1, 1)-only model and combination of the least-squares (LS) extrapolation of the harmonic model including the linear part, annual and semi-annual oscillations and NN. It is found that the proposed model outperforms the other two solutions. In addition, the predictions are compared with those from the Earth Orientation Parameters Prediction Comparison Campaign (EOP PCC) lasting from October 1, 2005 to February 28, 2008. The results show that the prediction accuracy is inferior to that of those methods taking into account atmospheric angular momentum (AAM), i.e., Kalman filter and adaptive transform from AAM to LODR, but noticeably better that of the other existing methods and techniques, e.g., autoregressive filtering and least-squares collocation. © 2016 COSPAR

Number of references:22

Main heading:Forecasting

Controlled terms:Earth (planet) - Kalman filters - Least squares approximations - Orbits - Tides

Uncontrolled terms:Artificial Earth satellites - Earth orientation parameters - Grey Model - Least-squares collocation - Modeling and validation - Neural network (nn) - Precise orbit determination - UT1-UTC

Classification code:471.4 Seawater, Tides and Waves - 921.6 Numerical Methods

DOI:10.1016/j.asr.2016.10.030

Database:Compendex

Accession number:20170603335953

Title:Interface modification based ultrashort laser microwelding between SiC and fused silica

Authors:Zhang, Guodong (1, 2); Bai, Jing (1); Zhao, Wei (1); Zhou, Kaiming (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:Optics Express

Abbreviated source title:Opt. Express

Volume:25

Issue:3

Issue date:February 6, 2017

Publication year:2017

Pages:1702-1709

Language:English

E-ISSN:10944087

Document type:Journal article (JA)

Publisher:OSA - The Optical Society

Abstract:It is a big challenge to weld two materials with large differences in coefficients of thermal expansion and melting points. Here we report that the welding between fused silica (softening point, 1720°C) and SiC wafer (melting point, 3100°C) is achieved with a near infrared femtosecond laser at 800 nm. Elements are observed to have a spatial distribution gradient within the cross section of welding line, revealing that mixing and inter-diffusion of substances have occurred during laser irradiation. This is attributed to the femtosecond laser induced local phase transition and volume expansion. Through optimizing the welding parameters, pulse energy and interval of the welding lines, a shear joining strength as high as 15.1 MPa is achieved. In addition, the influence mechanism of the laser ablation on welding quality of the sample without pre-optical contact is carefully studied by measuring the laser induced interface modification. © 2017 Optical Society of America.

Number of references:30

Main heading:Fused silica

Controlled terms:Femtosecond lasers - Infrared devices - Laser ablation - Melting point - Silicon carbide - Thermal expansion - Welding

Uncontrolled terms:Coefficients of thermal expansions - Influence mechanism - Interface modification - Joining strength - Local phase transition - Near infrared femtosecond laser - Softening points - Welding parameters

Classification code:538.2 Welding - 641.2 Heat Transfer - 804.2 Inorganic Compounds - 812.3 Glass - 931.2 Physical Properties of Gases, Liquids and Solids - 951 Materials Science

Numerical data indexing:Pressure 1.51e+07Pa, Size 8.00e-07m, Temperature 1.99e+03K, Temperature 3.37e+03K

DOI:10.1364/OE.25.001702

Funding details: Number: 61378019, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61223007, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: -, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;

Funding text:National Natural Science Foundation of China (NSFC) (61378019, 61223007). The corresponding author thanks Prof. Hong Chang and Dr. Maojie Yang in Institute of Earth Environment, CAS for SEM imaging.

Database:Compendex

Accession number:20181605018231

Title:Photonic microwave and RF signal processing based on optical micro-combs

Authors:Xu, Xingyuan (1); Wu, Jiayang (1); Shoeiby, Mehrdad (2); Chu, Sai T. (3); Little, Brent E. (4); Morandotti, Roberto (5); Mitchell, Arnan (2); Moss, David J. (1)

Source title:Progress in Electromagnetics Research Symposium

Abbreviated source title:Prog. Electromagn. Res. Symp.

Volume:2017-November

Part number:1 of 1

Issue title:2017 Progress In Electromagnetics Research Symposium - Fall, PIERS - FALL 2017 - Proceedings

Issue date:2017

Publication year:2017

Pages:2232-2236

Language:English

ISSN:15599450

E-ISSN:19317360

ISBN-13:9781538612118

Document type:Conference article (CA)

Conference name:2017 Progress In Electromagnetics Research Symposium - Fall, PIERS - FALL 2017

Conference date:November 19, 2017 - November 22, 2017

Conference location:Singapore, Singapore

Conference code:134703

Sponsor:Computer Simulation Technology (CST); et al.; Interhorizon Corporation Pte Ltd.; Linbou Nearfield Technology Co., Ltd.; Office of Naval Research Global; The Electromagnetics Academy

Publisher:Electromagnetics Academy

Abstract:We demonstrate the use of integrated micro-resonator based optical frequency comb sources as the basis for transversal filtering functions for microwave and radio frequency photonic filtering and advanced functions. © 2018 Electromagnetics Academy. All rights reserved.

Number of references:40

Main heading:Microwave resonators

Controlled terms:Microelectromechanical devices - Optical signal processing

Uncontrolled terms:Advanced functions - Filtering functions - Micro resonators - Optical frequency comb sources - Photonic microwave - Radio frequency photonics - RF signal processing

Classification code:714 Electronic Components and Tubes

DOI:10.1109/PIERS-FALL.2017.8293510

Funding details:

Funding text:This work was supported by the Australian Research Council Discovery Projects scheme.

Database:Compendex

Accession number:20174504371628

Title:Multichannel phase-sensitive amplification in a low-loss CMOS-compatible spiral waveguide

Authors:Zhang, Yanbing (1); Reimer, Christian (1); Wu, Jenny (1); Roztocki, Piotr (1); Wetzel, Benjamin (1, 2); Little, Brent E. (3); Chu, Sai T. (4); Moss, David J. (5); Eggleton, Benjamin J. (6); Kues, Michael (1, 7); Morandotti, Roberto (1, 8, 9)

Author affiliation:(1) INRS-EMT, 1650 Boulevard Lionel-Boulet, Varennes; QC; J3X 1S2, Canada; (2) School of Mathematical and Physical Sciences, University of Sussex, Falmer; Brighton; BN1 9QH, United Kingdom; (3) State Key Laboratory of Transient Optics and Photonics, Chinese Academy of Science, Xi’an, China; (4) City University of Hong Kong, Department of Physics and Material Science, Tat Chee Avenue, Hong Kong, Hong Kong; (5) Center for Micro-Photonics, Swinburne University of Technology, Hawthorn; VC; 3122, Australia; (6) CUDOS, IPOS, School of Physics, University of Sydney, Sydney; NSW; 2006, Australia; (7) School of Engineering, University of Glasgow, Rankine Building, Oakfield Avenue, Glasgow; G12 8LT, United Kingdom; (8) Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu; 610054, China; (9) National Research University of Information Technologies, Mechanics and Optics, St Petersburg, Russia

Corresponding author:Morandotti, Roberto(morandotti@emt.inrs.ca)

Source title:Optics Letters

Abbreviated source title:Opt. Lett.

Volume:42

Issue:21

Issue date:November 1, 2017

Publication year:2017

Pages:4391-4394

Language:English

ISSN:01469592

E-ISSN:15394794

CODEN:OPLEDP

Document type:Journal article (JA)

Publisher:OSA - The Optical Society

Abstract:We investigate single-channel and multichannel phase-sensitive amplification (PSA) in a highly nonlinear, CMOS-compatible spiral waveguide with ultralow linear and negligible nonlinear losses. We achieve a net gain of 10.4 dB and an extinction ratio of 24.6 dB for single-channel operation, as well as a 5 dB gain and a 15 dB extinction ratio spanning over a bandwidth of 24 nm for multiple-channel operation. In addition, we derive a simple analytic solution that enables calculating the maximum phase-sensitive gain in any Kerr medium featuring linear and nonlinear losses. These results not only give a clear guideline for designing PSA-based amplifiers but also show that it is possible to implement both optical regeneration and amplification in a single on-chip device. © 2017 Optical Society of America.

Number of references:22

Main heading:Amplification

Controlled terms:CMOS integrated circuits - Light extinction - Waveguides

Uncontrolled terms:Analytic solution - Extinction ratios - Multiple channels - On-chip devices - Optical regeneration - Phase-sensitive amplifications - Single channel operation - Spiral waveguides

Classification code:714.2 Semiconductor Devices and Integrated Circuits - 714.3 Waveguides - 741.1 Light/Optics

Numerical data indexing:Decibel 1.04e+01dB, Decibel 1.50e+01dB, Decibel 2.46e+01dB, Decibel 5.00e+00dB, Size 2.40e-08m

DOI:10.1364/OL.42.004391

Funding details: Number: -, Acronym: ARC, Sponsor: Australian Research Council;Number: DP150104327, Acronym: ARC, Sponsor: Australian Research Council;Number: 074-U01, Acronym: -, Sponsor: -;Number: PIOF-GA-2013-625466, Acronym: -, Sponsor: -;Number: -, Acronym: MSCA, Sponsor: H2020 Marie Sk&lstrok;odowska-Curie Actions;Number: -, Acronym: NSERC, Sponsor: Natural Sciences and Engineering Research Council of Canada;Number: 656607, Acronym: MSCA, Sponsor: Multiple Sclerosis Center of Atlanta;Number: -, Acronym: -, Sponsor: Canada Research Chairs;Number: IT06530, Acronym: -, Sponsor: Mitacs;Number: -, Acronym: NSERC, Sponsor: Natural Sciences and Engineering Research Council of Canada;

Funding text:Funding. Canada Research Chairs (MESI PSR-SIIR); Natural Sciences and Engineering Research Council of Canada (NSERC); Mitacs (IT06530); H2020 Marie Sk？odowska-Curie Actions (MSCA) (656607); European Union’s FP7 Programme (PIOF-GA-2013-625466); ITMO Fellowship and Professorship Program (074-U01); 1000 Talents Sichuan Program; Australian Research Council (ARC) (DP150104327).

Database:Compendex

Accession number:20172003669299

Title:Re-weighted discriminatively embedded K-means for multi-view clustering

Authors:Xu, Jinglin (1); Han, Junwei (1); Nie, Feiping (2); Li, Xuelong (3)

Author affiliation:(1) School of Automation, Northwestern Polytechnical University, Xi'an; 710072, China; (2) School of Computer Science, Center for OPTical IMagery Analysis and Learning, Northwestern Polytechnical University, Xi'an; 710072, 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; 710119, China

Corresponding author:Xu, Jinglin(xujinglinlove@gmail.com)

Source title:IEEE Transactions on Image Processing

Abbreviated source title:IEEE Trans Image Process

Volume:26

Issue:6

Issue date:June 2017

Publication year:2017

Pages:3016-3027

Article number:7847419

Language:English

ISSN:10577149

CODEN:IIPRE4

Document type:Journal article (JA)

Publisher:Institute of Electrical and Electronics Engineers Inc.

Abstract:Recent years, more and more multi-view data are widely used in many real-world applications. This kind of data (such as image data) is high dimensional and obtained from different feature extractors, which represents distinct perspectives of the data. How to cluster such data efficiently is a challenge. In this paper, we propose a novel multi-view clustering framework, called re-weighted discriminatively embedded K -means, for this task. The proposed method is a multi-view least-absolute residual model, which induces robustness to efficiently mitigates the influence of outliers and realizes dimension reduction during multi-view clustering. Specifically, the proposed model is an unsupervised optimization scheme, which utilizes iterative re-weighted least squares to solve least-absolute residual and adaptively controls the distribution of multiple weights in a re-weighted manner only based on its own low-dimensional subspaces and a common clustering indicator matrix. Furthermore, theoretical analysis (including optimality and convergence analysis) and the optimization algorithm are also presented. Compared with several state-of-the-art multi-view clustering methods, the proposed method substantially improves the accuracy of the clustering results on widely used benchmark data sets, which demonstrates the superiority of the proposed work. © 1992-2012 IEEE.

Number of references:48

Main heading:Iterative methods

Controlled terms:Clustering algorithms

Uncontrolled terms:Convergence analysis - Dimension reduction - Iterative reweighted least square - K-means - Low-dimensional subspace - Multi-view clustering - Optimization algorithms - Optimization scheme

Classification code:903.1 Information Sources and Analysis - 921.6 Numerical Methods

DOI:10.1109/TIP.2017.2665976

Database:Compendex

Accession number:20170803363276

Title:Resonance spiking by periodic loss in the double-sided liquid cooling disk oscillator

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; 710049, 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

Source title:Laser Physics

Abbreviated source title:Laser Phys.

Volume:27

Issue:3

Issue date:March 2017

Publication year:2017

Article number:035002

Language:English

ISSN:1054660X

E-ISSN:15556611

Document type:Journal article (JA)

Publisher:Institute of Physics Publishing

Abstract:A double-sided liquid cooling Nd:YAG disk oscillator working at a pump repetition rate of 20 Hz is demonstrated. The output energy of 376 mJ is realized, corresponding to the optical-optical efficiency of 12.8% and the slope efficiency of 14%. The pump pulse width is 300 μs and the laser pulse width is 260 μs. Instead of being a damped signal, the output of laser comprises undamped spikes. A periodic intra-cavity loss was found by numerical analysis, which has a frequency component near the eigen frequency of the relaxation oscillation. Resonance effect will induce amplified spikes even though the loss fluctuates in a small range. The Shark-Hartmann sensor was used to investigate the wavefront aberration induced by turbulent flow and temperature gradient. According to the wavefront and fluid mechanics analysis, it is considered that the periodic intra-cavity loss can be attributed to turbulent flow and temperature gradient. © 2017 Astro Ltd.

Number of references:25

Main heading:Aberrations

Controlled terms:Cooling - Disks (machine components) - Fluid mechanics - Liquid lasers - Liquids - Optical pumping - Resonance - Thermal gradients - Turbulent flow - Wavefronts - Yttrium aluminum garnet

Uncontrolled terms:Disk lasers - Frequency components - Liquid cooling - Optical-optical efficiency - Relaxation oscillation - Shark-Hartmann sensor - Slope efficiencies - Wavefront aberrations

Classification code:601.2 Machine Components - 631.1 Fluid Flow, General - 641.1 Thermodynamics - 641.2 Heat Transfer - 744.3 Liquid Lasers - 931.1 Mechanics

Numerical data indexing:Energy 3.76e-01J, Frequency 2.00e+01Hz, Percentage 1.28e+01%, Percentage 1.40e+01%, Time 2.60e-04s, Time 3.00e-04s

DOI:10.1088/1555-6611/aa5c10

Funding details: Number: 2016JQ6016, Acronym: -, Sponsor: Natural Science Foundation of Shaanxi Province;Number: 61308086, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: -, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;

Funding text:This work is financially supported by the National Natural Science Foundation of China (NSFC, No. 61308086) and Natural Science Basic Research Plan in Shaanxi Province of China (No: 2016JQ6016).

Database:Compendex

Accession number:20182405306595

Title:Microwave and RF applications of micro-combs

Authors:Xu, Xingyuan (1); Wu, Jiayang (1); Shoeiby, Mehrdad (2); Chu, Sai T. (3); Little, Brent E. (4); Morandotti, Roberto (5); Mitchell, Arnan (2); Moss, David J. (1)

Source title:2017 Opto-Electronics and Communications Conference, OECC 2017 and Photonics Global Conference, PGC 2017

Abbreviated source title:Opto-Electron. Commun. Conf., OECC Photonics Glob. Conf., PGC

Volume:2017-November

Part number:1 of 1

Issue title:2017 Opto-Electronics and Communications Conference, OECC 2017 and Photonics Global Conference, PGC 2017

Issue date:November 17, 2017

Publication year:2017

Pages:1-4

Language:English

ISBN-13:9781509062935

Document type:Conference article (CA)

Conference name:2017 Opto-Electronics and Communications Conference, OECC 2017 and Photonics Global Conference, PGC 2017

Conference date:July 31, 2017 - August 4, 2017

Conference location:Singapore, Singapore

Conference code:132616

Publisher:Institute of Electrical and Electronics Engineers Inc.

Number of references:32

Main heading:Microwave resonators

Controlled terms:Crystal resonators - Microelectromechanical devices - Microwaves - Photonics

Uncontrolled terms:Advanced functions - Filtering functions - Frequency combs - Micro resonators - Optical frequency comb sources - Radio frequency photonics - RF applications

Classification code:711 Electromagnetic Waves - 713.5 Electronic Circuits Other Than Amplifiers, Oscillators, Modulators, Limiters, Discriminators or Mixers - 714 Electronic Components and Tubes - 741.1 Light/Optics

DOI:10.1109/OECC.2017.8115044

Database:Compendex

Accession number:20174804481697

Title:A multi-task framework for weather recognition

Authors:Li, Xuelong (1); Wang, Zhigang (2); Lu, Xiaoqiang (1)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, Shaanxi; 710019, China; (2) School of Computer Science, Center for OPTical IMagery Analysis and Learning (OPTIMAL), Northwestern Polytechnical University, Xi'an, Shaanxi; 710072, China

Source title:MM 2017 - Proceedings of the 2017 ACM Multimedia Conference

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

Part number:1 of 1

Issue title:MM 2017 - Proceedings of the 2017 ACM Multimedia Conference

Issue date:October 23, 2017

Publication year:2017

Pages:1318-1326

Language:English

ISBN-13:9781450349062

Document type:Conference article (CA)

Conference name:25th ACM International Conference on Multimedia, MM 2017

Conference date:October 23, 2017 - October 27, 2017

Conference location:Mountain View, CA, United states

Conference code:131373

Sponsor:ACM SIGMM

Publisher:Association for Computing Machinery, Inc

Abstract:Weather recognition is important in practice, while this task has not been thoroughly explored so far. The current trend of dealing with this task is treating it as a single classification problem, i.e., determining whether a given image belongs to a certain weather category or not. However, weather recognition differs significantly from traditional image classification, since several weather features may appear simultaneously. In this case, a simple classification result is insufficient to describe the weather condition. To address this issue, we propose to provide auxiliary weather related information for comprehensive weather description. Specifically, semantic segmentation of weather-cues, such as blue sky and white clouds, is exploited as an auxiliary task in this paper. Moreover, a convolutional neural network (CNN) based multi-task framework is developed which aims to concurrently tackle weather category classification task and weather-cues segmentation task. Due to the intrinsic relationships between these two tasks, exploring auxiliary semantic segmentation of weather-cues can also help to learn discriminative features for the classification task, and thus obtain superior accuracy. To verify the effectiveness of the proposed approach, extra segmentation masks of weather-cues are generated manually on an existing weather image dataset. Experimental results have demonstrated the superior performance of our approach. The enhanced dataset, source codes and pre-trained models are available at https://github.com/wzgwzg/Multitask-Weather. © 2017 ACM.

Number of references:38

Main heading:Classification (of information)

Controlled terms:Convolution - Image segmentation - Neural networks - Semantics

Uncontrolled terms:Category Classification - Classification results - Convolutional neural network - Convolutional Neural Networks (CNN) - Discriminative features - Multitask learning - Semantic segmentation - Weather recognition

Classification code:716.1 Information Theory and Signal Processing

DOI:10.1145/3123266.3123382

Database:Compendex

Accession number:20182205244172

Title:A Bayesian-adaboost model for stock trading rule discovery

Authors:Kong, Zhoufan (1); Yang, Jie (1); Huang, Qinghua (1); Li, Xuelong (2)

Author affiliation:(1) School of Electronica Information Engineering, South China University of Technology, Guangzhou; 510641, 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, Shaanxi; 710119, China

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

Source title:Proceedings - 2017 10th International Congress on Image and Signal Processing, BioMedical Engineering and Informatics, CISP-BMEI 2017

Abbreviated source title:Proc. - Int. Congr. Image Signal Process., BioMed. Eng. Inf., CISP-BMEI

Volume:2018-January

Part number:1 of 1

Issue title:Proceedings - 2017 10th International Congress on Image and Signal Processing, BioMedical Engineering and Informatics, CISP-BMEI 2017

Issue date:July 2, 2017

Publication year:2017

Pages:1-6

Language:English

ISBN-13:9781538619377

Document type:Conference article (CA)

Conference name:10th International Congress on Image and Signal Processing, BioMedical Engineering and Informatics, CISP-BMEI 2017

Conference date:October 14, 2017 - October 16, 2017

Conference location:Shanghai, China

Conference code:135071

Publisher:Institute of Electrical and Electronics Engineers Inc.

Abstract:Detecting the trading patterns with different technical indicators from the historical financial data is an efficient way to forecast the trading decisions in the financial market. In most cases, the trading patterns which consist of some specific combinations of technical indicators are significant in predicting the efficient trading decisions. However, discovering those combinations is a rather challenge assignment. In this paper, we propose a novel method to detect the trading patterns and later the Naive bayes with Adaboost method was employed to determine the trading decisions. The proposed method has been implemented on two historical stock datasets, the experimental results demonstrate that the proposed algorithm outperforms the other three algorithms and could provide a worthwhile reference for the financial investments. © 2017 IEEE.

Number of references:30

Main heading:Commerce

Controlled terms:Adaptive boosting - Biomedical engineering - Electronic trading - Financial markets - Forecasting - Image processing

Uncontrolled terms:AdaBoost model - Biclusters - Financial data - Financial investments - Naive Bayeians method - Stock predictions - Technical indicator - Trading patterns

Classification code:461.1 Biomedical Engineering - 723 Computer Software, Data Handling and Applications - 723.5 Computer Applications

DOI:10.1109/CISP-BMEI.2017.8302138

Funding details: Number: 2014A050503020, Acronym: -, Sponsor: -;Number: 61571193, Acronym: -, Sponsor: National Natural Science Foundation of China;

Funding text:ACKNOWLEDGMENT This work was partially supported by National Natural Science Foundation of China (Nos. 61372007 and 61571193), and Guangdong Provincial Science and Technology Program - International Collaborative Projects (No. 2014A050503020).

Database:Compendex

Accession number:20183105646934

Title:A markerless visual-motor tracking system for behavior monitoring in DCD assessment

Authors:Li, Shengyan (1); Li, Bin (1, 2); Zhang, Shixiong (1); Fu, Hong (1); Lo, Wai-Lun (1); Yu, Jie (3); Sit, Cindy H. P. (3); Li, Ruimin (1, 2)

Author affiliation:(1) Department of Computer Science, Chu Hai College of Higher Education, Hong Kong, Hong Kong; (2) Xi'An Institute of Optics and Precision Mechanics of CAS, University of Chinese Academy of Sciences, Beijing, China; (3) Department of Sports Science and Physical Education, Chinese University of Hong Kong, Shatin, Hong Kong

Corresponding author:Fu, Hong(hfu@chuhai.edu.hk)

Source title:Proceedings - 9th Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, APSIPA ASC 2017

Abbreviated source title:Proc. - Asia-Pacific Signal Inf. Process. Assoc. Annu. Summit Conf., APSIPA ASC

Volume:2018-February

Part number:1 of 1

Issue title:Proceedings - 9th Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, APSIPA ASC 2017

Issue date:July 2, 2017

Publication year:2017

Pages:774-777

Language:English

ISBN-13:9781538615423

Document type:Conference article (CA)

Conference name:9th Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, APSIPA ASC 2017

Conference date:December 12, 2017 - December 15, 2017

Conference location:Kuala Lumpur, Malaysia

Conference code:134570

Sponsor:DOLBY; et al.; Microsoft; Mobvoi; National Instruments; Sogou

Publisher:Institute of Electrical and Electronics Engineers Inc.

Abstract:Development coordination disorder (DCD) is a disorder of visual-motor integration in children, so the study on coordination of vision and motion is essential to understand the mechanism of DCD. The standardized assessments with certain visual-motor tasks are often used to detect impairments in eye-motion coordination, which is the most important component for diagnosis of DCD. However, these assessments emphasize on motor performance of children, while ignoring the detailed process of eye-motion coordination in performing these tasks. Therefore, it is a need to develop a proper digital visual-motor system to detect the eye movement and body motion simultaneously during these tasks, to study the mechanism of a typical eye-motion coordination. Currently, the eye-motion system is based on marker to detect the joints and gaze points for integration. This kind of system is very expensive and the markers may affect children's behavior in the task of DCD assessment. In this study, an integrated and markerless eye-motion system is developed to detect children's behavior in DCD assessment. In this system, a multi-Kinect system is used to monitor body motion and extract the skeletal joints. The gaze point is detected by a head-mount eye tracker and will be integrated into the system of body motion using image processing method. With the proposed system, the skeletal joints and gaze points can be obtained simultaneously for further digital DCD assessment. © 2017 IEEE.

Number of references:6

Main heading:Eye tracking

Controlled terms:Eye movements - Image processing - Monitoring - Motion planning - Processing

Uncontrolled terms:Behavior monitoring - Image processing - methods - Motion coordination - Motor performance - Skeletal joints - Tracking system - Visual motor integrations - Visual-motor task

Classification code:913.4 Manufacturing

DOI:10.1109/APSIPA.2017.8282139

Funding details: Number: -, Acronym: -, Sponsor: Canadian Anesthesiologists' Society;Number: -, Acronym: -, Sponsor: University of Chinese Academy of Sciences;Number: -, Acronym: -, Sponsor: Chinese University of Hong Kong;Number: UGC/FDS13/E02/16, Acronym: -, Sponsor: -;

Funding text:1 Department of Computer Science, Chu Hai College of Higher Education, Hong Kong 2 Xi’an Institute of Optics and Precision Mechanics of CAS, University of Chinese Academy of Sciences, Beijing, China 3 Department of Sports Science and Physical Education, The Chinese University of Hong Kong, Shatin, Hong Kong * Corresponding Author, E-mail: hfu@chuhai.edu.hk, Tel: +852-29727250The work described in this paper was fully supported by a grant from the Research Grants Council of the Hong Kong Special Administrative Region, China (Project Reference No.: UGC/FDS13/E02/16).

Database:Compendex

Accession number:20172703889299

Title:Large-area micro-channel plate photomultiplier tube

Authors:Sun, Jianning (1); Ren, Ling (1); Cong, Xiaoqing (1); Huang, Guorui (1); Jin, Muchun (1); Li, Dong (1); Liu, Hulin (3); Qiao, Fangjian (1); Qian, Sen (2); Si, Shuguang (1); Tian, Jinshou (2); Wang, Xingchao (1); Wang, Yifang (2); Wei, Yonglin (3); Xin, Liwei (3); Zhang, Haoda (1); Zhao, Tianchi (2)

Author affiliation:(1) North Night Vision Technology Co., Ltd, Nanjing; 211100, China; (2) Institute of High Energy Physics, Chinese Academy of Sciences, Beijing; 100049, China; (3) 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:46

Issue:4

Issue date:April 25, 2017

Publication year:2017

Article number:0402001

Language:Chinese

ISSN:10072276

Document type:Journal article (JA)

Publisher:Chinese Society of Astronautics

Abstract:According to the requirement of detector in high energy physics and nuclear physics national scientific equipment, the large-area micro-channel plate photomultiplier(MCP-PMT) different from dynode PMT was researched. The large-area MCP-PMT had low-background glass and microchannel plate multiplier. Using Sb-K-Cs as photocathode, MCP-PMT enjoyed very high quantum efficiency at 350- 450 nm. With double MCPs as electron amplifier, the gain could reach 107. The detection efficiency and single photon detection of large-area PMT was improved. Compared with conventional dynode PMT, this MCP-PMT is a completely new design in structure and has better ratio of spectrum peak to valley, high gain, better anode uniformity, fast response time in single photoelectron detection. © 2017, Editorial Board of Journal of Infrared and Laser Engineering. All right reserved.

Number of references:10

Main heading:Image storage tubes

Controlled terms:Microchannels - Particle beams - Photoelectron spectroscopy - Photomultipliers - Photons - Plates (structural components) - Quantum efficiency

Uncontrolled terms:Detection efficiency - High quantum efficiency - Low background - Micro channel plate - Micro-channel plate photomultiplier tubes - Scientific equipment - Single photoelectrons - Single photon detection

Classification code:408.2 Structural Members and Shapes - 714.1 Electron Tubes - 931.3 Atomic and Molecular Physics - 931.4 Quantum Theory; Quantum Mechanics - 932.1 High Energy Physics

Numerical data indexing:Size 3.50e-07m to 4.50e-07m

DOI:10.3788/IRLA201746.0402001

Database:Compendex

Accession number:20173704143891

Title:Ti:Sapphire Femtosecond Pulses Pumped Directly by Green Diode Lasers

Authors:Wang, Xianglin (1, 2); Hu, Xiaohong (1, 2); Xu, Peng (1); Zhang, Wei (1); Yang, Zhi (1); Wang, Yishan (1)

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

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

Source title:Zhongguo Jiguang/Chinese Journal of Lasers

Abbreviated source title:Zhongguo Jiguang

Volume:44

Issue:7

Issue date:July 10, 2017

Publication year:2017

Article number:0701002

Language:Chinese

ISSN:02587025

CODEN:ZHJIDO

Document type:Journal article (JA)

Publisher:Science Press

Abstract:The laser beams emitted from a pair of 520 nm/1.45 W green diode lasers are shaped and focused on a Ti:sapphire laser crystal to complete the pumping process. The intracavity dispersion is compensated by using the GTI (Gires-Tournois interferometer) mirrors. The stable Kerr-lens mode locking state is achieved with an output pulse width of 91 fs, an output power of 208 mW, and a single pulse energy of 1.59 nJ. The narrowest pulse width of 82 fs is further realized after the optimization of cavity-type parameters and the maximum output power reaches 232 mW when the cavity length is shortened. © 2017, Chinese Lasers Press. All right reserved.

Number of references:16

Main heading:Optical pumping

Controlled terms:Diodes - Electromagnetic pulse - Laser accessories - Laser beams - Laser mode locking - Locks (fasteners) - Q switched lasers - Sapphire - Semiconductor lasers - Ultrashort pulses

Uncontrolled terms:Diode laser pumping - Gires-Tournois interferometers - Intra-cavity dispersion - Kerr lens mode locking - Laser technique - Maximum output power - Single pulse energy - Ti: Sapphire laser

Classification code:482.2.1 Gems - 701 Electricity and Magnetism - 744 Lasers

Numerical data indexing:Time 8.20e-14s, Time 9.10e-14s, Energy 1.59e-09J, Power 2.08e-01W, Power 2.32e-01W

DOI:10.3788/CJL201744.0701002

Database:Compendex

Accession number:20171903648492

Title:A generalized power iteration method for solving quadratic problem on the Stiefel manifold

Authors:Nie, Feiping (1); Zhang, Rui (1); Li, Xuelong (2)

Author affiliation:(1) School of Computer Science and Center for OPTical IMagery Analysis and Learning (OPTIMAL), Northwestern Polytechnical University, Xi’an; 710072, 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:Nie, Feiping(feipingnie@gmail.com)

Source title:Science China Information Sciences

Abbreviated source title:Sci. China Inf. Sci.

Volume:60

Issue:11

Issue date:November 1, 2017

Publication year:2017

Article number:112101

Language:English

ISSN:1674733X

E-ISSN:18691919

Document type:Journal article (JA)

Publisher:Science in China Press

Abstract:In this paper, we first propose a novel generalized power iteration (GPI) method to solve the quadratic problem on the Stiefel manifold (QPSM) as minWTW=I Tr(WTAW − 2WTB) along with the theoretical analysis. Accordingly, its special case known as the orthogonal least square regression (OLSR) is under further investigation. Based on the aforementioned studies, we then majorly focus on solving the unbalanced orthogonal procrustes problem (UOPP). As a result, not only a general convergent algorithm is derived theoretically but the efficiency of the proposed approach is verified empirically as well. © 2017, Science China Press and Springer-Verlag Berlin Heidelberg.

Number of references:18

Main heading:Problem solving

Controlled terms:Iterative methods

Uncontrolled terms:Orthogonal least squares - power iteration - Procrustes problem - Quadratic problem - Stiefel manifold

Classification code:921.6 Numerical Methods

DOI:10.1007/s11432-016-9021-9

Database:Compendex

Accession number:20173804179887

Title:Polarization control methods in structured illumination microscopy

Authors:Zhao, Tian-Yu (1, 2); Zhou, Xing (1); Dan, Dan (1); Qian, Jia (1); Wang, Zhao-Jun (1); Lei, Ming (1); Yao, Bao-Li (1)

Corresponding author:Lei, Ming(leiming@opt.ac.cn)

Source title:Wuli Xuebao/Acta Physica Sinica

Abbreviated source title:Wuli Xuebao

Volume:66

Issue:14

Issue date:July 20, 2017

Publication year:2017

Article number:148704

Language:Chinese

ISSN:10003290

CODEN:WLHPAR

Document type:Journal article (JA)

Publisher:Institute of Physics, Chinese Academy of Sciences

Abstract:Structured illumination microscopy (SIM) is one of the most promising super-resolution techniques, owing to its advantages of fast imaging speed and weak photo bleaching. The quality of the SIM image is greatly dependent on the contrast of the sinusoidal fringe illumination patterns. Low fringe contrast illumination will seriously affect the super-resolution result and lead to additional artifacts. The generation of fringe patterns with high contrast is the key requirement in hardware for the SIM technique. This can be done by the interference of two laser beams diffracted from the phase gratings addressed on a spatial light modulator. Meanwhile, for maximal interference contrast, precise polarization control to maintain s-polarization for different fringe orientations is critical. In this paper, we review several typical polarization control methods in SIM, and propose a new method by using a zero-order vortex half-wave retarder (VHR). Compared with the other methods, the presented VHR-based polarization control method is very efficient in terms of simple system configuration, ease of use, and high light energy utilization efficiency near to 100%. © 2017 Chinese Physical Society.

Number of references:22

Main heading:Polarization

Controlled terms:Energy utilization - Laser beams - Light modulators - Optical resolving power - Vortex flow

Uncontrolled terms:Half-wave - Illumination patterns - Polarization control - Polarization control methods - Spatial light modulators - Structured illumination microscopies (SIM) - Structured illumination microscopy - Super resolution

Classification code:525.3 Energy Utilization - 631.1 Fluid Flow, General - 741.1 Light/Optics - 744.8 Laser Beam Interactions

Numerical data indexing:Percentage 1.00e+02%

DOI:10.7498/aps.66.148704

Funding details: Number: 11404389, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 11474352, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61522511, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 81427802, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;

Funding text:Project supported by the National Natural Science Foundation of China (Grant Nos. 61522511, 11404389, 81427802, 11474352) and the Basic Research Plan of Natural Science in Shaanxi Province, China (Grant No. 2016JZ020).

Database:Compendex

Accession number:20181004853707

Title:Speckle-correlation imaging through scattering media with hybrid bispectrum-iteration algorithm

Authors:Zhou, Meiling (1, 2, 3); Singh, Alok Kumar (1); Pedrini, Giancarlo (1); Osten, Wolfgang (1); Min, Junwei (2); Yao, Baoli (2)

Author affiliation:(1) University of Stuttgart, Institut für Technische Optik ITO, Stuttgart, Germany; (2) Chinese Academy of Sciences, Xi'An Institute of Optics and Precision Mechanics, State Key Laboratory of Transient Optics and Photonics, Xi'an, China; (3) University of Chinese Academy of Sciences, Beijing, China

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

Source title:Optical Engineering

Abbreviated source title:Opt Eng

Volume:56

Issue:12

Issue date:December 1, 2017

Publication year:2017

Article number:123102

Language:English

ISSN:00913286

E-ISSN:15602303

CODEN:OPEGAR

Document type:Journal article (JA)

Publisher:SPIE

Abstract:We present an improved iteration algorithm for speckle-correlation imaging through scattering media. We employ an approximate solution obtained from a bispectrum-analysis method as the initial condition of the iterative process. This method avoids several different runs performed with different random initial conditions in the traditional iteration algorithm and reduces the execution time in comparison with the conventional bispectrum-analysis method. Therefore, we obtain a balance between image quality and reconstruction speed. The feasibility of the proposed method is proved by the experimental results. © 2017 Society of Photo-Optical Instrumentation Engineers (SPIE).

Number of references:25

Main heading:Iterative methods

Controlled terms:Speckle

Uncontrolled terms:Approximate solution - Bispectrum analysis - initial input - Iteration algorithms - Iterative algorithm - Random initial conditions - Reconstruction speed - Speckle correlations

Classification code:741.1 Light/Optics - 921.6 Numerical Methods

DOI:10.1117/1.OE.56.12.123102

Funding details: Number: -, Acronym: -, Sponsor: Universität Stuttgart;Number: -, Acronym: CAS, Sponsor: Chinese Academy of Sciences;Number: 61377008, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61475187, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61405242, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: -, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;

Funding text:Meiling Zhou is grateful to Chinese Academy of Sciences for supporting her study at the Institut für Technische Optik (ITO), Universit？t Stuttgart through the Joint Training PhD Program UCAS[2015]42. This research was supported by the Natural Science Foundation of China (NSFC) under Grant Nos. 61377008, 61405242, and 61475187.

Database:Compendex

Accession number:20175204584523

Title:SCECam: a spherical compound eye camera for fast location and recognition of objects at a large field of view

Authors:Shi, Chengyong (1, 2); Wang, Yuanyuan (1, 2); Liu, Chenyang (1, 2); Wang, Taisheng (1); Zhang, Hongxin (1); Liao, Wuxia (3); Xu, Zhijun (1); Yu, Weixing (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, Jinlin, China; (2) University of the Chinese Academy of Sciences, Beijing; 10039, China; (3) School of Electronic Engineering, Chengdu Technological University, No. 1, Zhongxin Road, Chengdu; 611730, China; (4) 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

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

Source title:Optics Express

Abbreviated source title:Opt. Express

Volume:25

Issue:26

Issue date:December 25, 2017

Publication year:2017

Pages:32333-32345

Language:English

E-ISSN:10944087

Document type:Journal article (JA)

Publisher:OSA - The Optical Society

Abstract:In recent years, the compound eye imaging system has attracted great attention due to its fascinating optical features such as large field of view (FOV), small volume and high acuity to moving objects. However, it is still a big challenge to fabricate such a whole system due to the mismatch between the spherical compound eye imaging element and the planar imaging sensor. In this work, we demonstrate a kind of hemispherical compound eye camera (SCECam) which analogs the eye of the fruit fly. The SCECam consists of three sub-systems, a hemispherical compound eye, an optical relay system and a commercial CMOS imaging sensor. By introducing an intermediate optical relay system, the curved focal plane after the compound eye can be transformed and projected onto the planar focal plane of the imaging sensor. In this way, the SCECam can realize a large FOV (up to 122.4°) with 4400 ommatidia, which makes it possible to detect and locate fast moving objects at a very fast speed. It is calculated that the recognition speed of the SCECam is two to three orders of magnitude higher than those conventional methods such as the Canny and Log edge-detection methods. © 2017 Optical Society of America.

Number of references:28

Main heading:Cameras

Controlled terms:Edge detection - Focusing

Uncontrolled terms:CMOS imaging sensor - Compound-eye camera - Conventional methods - Edge detection methods - Large field of views - Location and recognition - Recognition speed - Three orders of magnitude

Classification code:742.2 Photographic Equipment

DOI:10.1364/OE.25.032333

Funding details: Number: 61361166004, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61475156, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;

Funding text:National Natural Science Foundation of China (NSFC) (61475156 and 61361166004).

Database:Compendex

Accession number:20173003988115

Title:Efficiency analysis of 808 nm laser diode array under different operating temperatures

Authors:Song, Yun-Fei (1, 2); Wang, Zhen-Fu (1); Li, Te (1); Yang, Guo-Wen (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) Xi'an Lumcore Optoelectronics Technologies Co., Ltd, Xi'an; 710077, China

Corresponding author:Yang, Guo-Wen(yangguowen@opt.ac.cn)

Source title:Wuli Xuebao/Acta Physica Sinica

Abbreviated source title:Wuli Xuebao

Volume:66

Issue:10

Issue date:May 20, 2017

Publication year:2017

Article number:104202

Language:Chinese

ISSN:10003290

CODEN:WLHPAR

Document type:Journal article (JA)

Publisher:Institute of Physics, Chinese Academy of Sciences

Abstract:The 808 nm high-efficiency laser diodes have many advantages, such as high output power, high reliabilities, compact sizes, which are widely used in many areas, such as industry, communication, science, medicine and biology. In order to improve the power conversion efficiencies of 808 nm laser diodes, the following requirements must be considered, such as loss of joule heating, loss by the carrier leakage, spontaneous radiation loss below the threshold current, loss by interface voltage defect, internal losses including free-carrier absorption loss and scattering loss. These losses above are closely related to the operating temperature of laser diode. In this paper, power conversion efficiency analysis is demonstrated from the aspects of the output power, threshold current, slope efficiency, voltage, and series resistance at different temperatures.. This is the first time that the detailed study has been carried out under various temperatures (up to the lowest temperature of -40℃). And the detailed study above can be of benefit to designing the wafer epitaxial structure. High-power 808 nm laser diode arrays are mounted on conduction cooled heatsinks. And the laser chips have 47 emitters with 50% in fill factor, 100 μm stripe in width and 1.5 mm in cavity length. The asymmetric broad waveguide epitaxial structure with lower absorption loss in p-type waveguide and cladding layer is designed in order to reduce the internal losses. The device performances are measured under operating temperatures ranging from -40℃ to 25℃ including the output power, threshold current, slope efficiency, series resistance, voltage, etc. Then the power conversion efficiency of 808 nm laser diode arrays are demonstrated from the output characteristics at different operating temperatures. With temperature decreasing, the series resistance gradually increases. The loss of joule heating ratio rises from 7.8% to 10.3%. In that case, the high series resistance is the major factor to prevent the efficiency from further improving at a low temperature of -40℃. As temperature decreases from 25℃ to -40℃, the carrier leakage ratio is reduced from 16.6% to 3.1%, the carrier leakage is the dominant factor for increasing efficiency, which means that it is necessary to optimize the epitaxial structure in order to reduce the carrier leakage at the room temperature. Comparing the two different work temperatures from -30℃ to -40℃, the carrier leakage ratio only changes 0.1%, which implies that the carrier leakage could be ignored under the low temperature. Meanwhile, as temperature decreases from 25℃ to -40℃, the power conversion efficiency increases from 56.7% to 66.8%. © 2017 Chinese Physical Society.

Number of references:19

Main heading:Efficiency

Controlled terms:Conversion efficiency - Diodes - Electric resistance - Joule heating - Semiconductor lasers - Temperature - Waveguides

Uncontrolled terms:Free carrier absorption - High series resistances - High-efficiency lasers - Laser chips - Operating temperature - Output characteristics - Power conversion efficiencies - Spontaneous radiation

Classification code:525.5 Energy Conversion Issues - 641.1 Thermodynamics - 701.1 Electricity: Basic Concepts and Phenomena - 714.3 Waveguides - 744.4.1 Semiconductor Lasers - 913.1 Production Engineering

Numerical data indexing:Percentage 1.00e-01%, Percentage 1.66e+01% to 3.10e+00%, Percentage 5.00e+01%, Percentage 5.67e+01% to 6.68e+01%, Percentage 7.80e+00% to 1.03e+01%, Size 1.00e-04m, Size 1.50e-03m, Size 8.08e-07m

DOI:10.7498/aps.66.104202

Funding details: Number: Y429941233, Acronym: CAS, Sponsor: Chinese Academy of Sciences;Number: 61504167, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;

Funding text:Project supported by the National Natural Science Foundation of China (Grant No. 61504167) and the "100 Talents Project" of Chinese Academy of Sciences, China (Grant No. Y429941233).

Database:Compendex

Accession number:20174904498761

Title:Graphene oxide-COOH as a new saturable absorber for both Q-switching and mode-locking fiber lasers

Authors:Zhao, Fengyan (1, 2); Wang, Yishan (1); Wang, Yonggang (3); Wang, Hushan (1, 2); Cai, Yajun (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) University of Chinese Academy of Sciences, Beijing; 100049, China; (3) School of Physics and Information Technology, Shaanxi Normal University, Xi'an; 710119, China

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

Source title:Chinese Optics Letters

Abbreviated source title:Chin. Opt. Lett.

Volume:15

Issue:10

Issue date:October 10, 2017

Publication year:2017

Article number:101402

Language:English

ISSN:16717694

Document type:Journal article (JA)

Publisher:Science Press

Abstract:Graphene oxide carboxylic acid (COOH), a novel two-dimensional (2D) layered material with its unique optical and electronic properties, is discovered to exhibit the saturation of optical absorption under laser illumination. Applying the liquid-phase exfoliation method, we prepare graphene oxide-COOH dispersions with deionized water and fabricate graphene oxide-COOH polyvinyl alcohol polymer composite film. We further obtain stable Q-switching pulse and mode-locked laser operation with a 22.7 MHz repetition rate and a 1.5 ps pulse duration by incorporating the graphene oxide-COOH-based saturable absorbers into the all-fiber erbium-doped fiber laser cavity. The experimental results show that the proposed graphene oxide-COOH material can act as an effective absorber for pulsed fiber lasers, which demonstrate potential applications in the area of ultrafast optics. © 2017 Chinese Optics Letters.

Number of references:31

Main heading:Graphene

Controlled terms:Composite films - Deionized water - Dispersions - Electronic properties - Fiber lasers - Fibers - Light absorption - Locks (fasteners) - Mode-locked fiber lasers - Pulse repetition rate - Pulsed lasers - Q switched lasers - Q switching - Saturable absorbers - Semiconductor quantum wells

Uncontrolled terms:Erbium doped fiber laser - Laser illumination - Layered material - Mode-locked laser operation - Optical and electronic properties - Pulsed fiber lasers - Q-switching and mode-locking - Two Dimensional (2 D)

Classification code:445.1 Water Treatment Techniques - 714.2 Semiconductor Devices and Integrated Circuits - 741.1 Light/Optics - 744 Lasers - 761 Nanotechnology - 804 Chemical Products Generally - 951 Materials Science

Numerical data indexing:Frequency 2.27e+07Hz, Time 1.50e-12s

DOI:10.3788/COL201715.101402

Funding details: Number: -, Acronym: SAFEA, Sponsor: State Administration of Foreign Experts Affairs;Number: -, Acronym: CAS, Sponsor: Chinese Academy of Sciences;Number: 61690222, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;

Funding text:This work was supported by the National Natural Science Foundation of China (No. 61690222) and the CAS/ SAFEA international Partnership Program for creative Research Teams.

Database:Compendex

Accession number:20173003968760

Title:Development of 2.5 THz suspended porous microstructured fiber based on cyclic-olefin copolymer

Authors:Chen, Qi (1); Zhu, Wenjing (1); Kong, Depeng (2); He, Xiaoyang (1); Li, Bo (1); Miao, Jing (2); Luo, Zhenfei (3); Zhou, Xun (3); Yang, Chun (1); Zhang, Jian (1)

Author affiliation:(1) Institute of Electronic Engineering, China Academy of Engineering Physics, Mianyang; 621999, China; (2) Xian Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xian, 710119, China; (3) Research Center of Laser Fusion, China Academy of Engineering Physics, Chengdu; 610041, China

Corresponding author:Li, Bo(libocaepiee@163.com)

Source title:Optik

Abbreviated source title:Optik

Volume:145

Issue date:September 2017

Publication year:2017

Pages:56-60

Language:English

ISSN:00304026

Document type:Journal article (JA)

Publisher:Elsevier GmbH

Abstract:Efficient transmission of terahertz (THz) wave is very important in the development of THz technology. Polymer microstructured fiber is ideal in THz waveguide transmission for its advantages of low loss, low dispersion and good flexibility to bend. Based on the full vector finite element method, a suspended porous microstructured fiber with the operating frequency of 2.5 THz was designed. Fiber samples made of cyclic-olefin copolymer were fabricated, and their transmission performances were measured by using the CO<inf>2</inf>pump laser THz source. The measured minimum loss is 0.17 dB/cm and average loss is about 0.5 dB/cm. The fluctuation of transmission loss is less than 5% when the fiber is bent from 0° to 90°, showing good flexibility of bending. The measured mode field distributions of the output tips show that the THz wave propagates with fundamental mode, and the energy is well confined in the core of the fiber. © 2017 Elsevier GmbH

Number of references:18

Main heading:Terahertz waves

Controlled terms:Fibers - Finite element method - Microstructure - Olefins - Pumping (laser)

Uncontrolled terms:Cyclic Olefin Copolymers - Full vector finite element methods - Fundamental modes - Microstructured fibers - Operating frequency - Suspended porous - Tera Hertz - Transmission performance

Classification code:711 Electromagnetic Waves - 744.1 Lasers, General - 804.1 Organic Compounds - 921.6 Numerical Methods - 951 Materials Science

Numerical data indexing:Percentage 5.00e+00%

DOI:10.1016/j.ijleo.2017.06.124

Funding details: Number: -, Acronym: CACMS, Sponsor: China Academy of Chinese Medical Sciences;Number: CAEPTHZ201307, Acronym: -, Sponsor: China Academy of Engineering Physics THz Science and Technology Foundation;Number: 11504416, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;

Funding text:This work is financially supported by the National Natural Science Foundation of China (No. 11504416), China Academy of Engineering Physics THz Science and Technology Foundation under the Grant No. CAEPTHZ201307, and China Academy of Science ?Light of West China? Program (Title: Novel polymer microstructured graded-index terahertz fiber).

Database:Compendex

Accession number:20172603861820

Title:Graphene on meta-surface for superresolution optical imaging with a sub-10 nm resolution

Authors:Cao, Shun (1, 2); Wang, Taisheng (1); Sun, Qiang (1); Hu, Bingliang (3); Levy, Uriel (4); Yu, Weixing (3)

Author affiliation:(1) State Key Laboratory of Applied Optics, Changchun Institute of Optics, Chinese Academy of Sciences, No.3888, Dongnanhu Road, Changchun, Jilin, China; (2) University of the Chinese Academy of Sciences, Beijing; 10039, 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) Department of Applied Physics, Benin School of Engineering and Computer Science, Hebrew University of Jerusalem, Jerusalem; 91904, Israel

Source title:Optics Express

Abbreviated source title:Opt. Express

Volume:25

Issue:13

Issue date:June 26, 2017

Publication year:2017

Pages:14494-14503

Language:English

E-ISSN:10944087

Document type:Journal article (JA)

Publisher:OSA - The Optical Society

Abstract:Nowadays, wide-field of view plasmonic structured illumination method (WFPSIM) has been extensively studied and experimentally demonstrated in biological researches. Normally, noble metal structures are used in traditional WFPSIM to support ultrahigh wave-vector of SPs and an imaging resolution enhancement of 3-4 folds can be achieved. To further improve the imaging resolution of WFPSIM, we hereby propose a widefield optical nanoimaging method based on a hybrid graphene on meta-surface structure (GMS) model. It is found that an ultra-high wave-vector of graphene SPs can be excited by a metallic nanoslits array with localized surface plasmon enhancement. As a result, a standing wave surface plasmons (SW-SPs) interference pattern with a period of 11 nm for a 980 nm incident wavelength can be obtained. The potential application of the GMS for wide-field of view super-resolution imaging is discussed followed by simulation results which show that an imaging resolution of sub-10 nm can be achieved. The demonstrated method paves a new route for wide field optical nanoimaging, with applications e.g. in biological research to study biological processes occurring in cell membrane. © 2017 Optical Society of America.

Number of references:54

Main heading:Graphene

Controlled terms:Cytology - Optical resolving power - Plasmonics - Precious metals - Surface plasmons

Uncontrolled terms:Biological research - Imaging resolutions - Incident wavelength - Interference patterns - Localized surface plasmon - Structured illumination method - Super resolution imaging - Wide field of view

Classification code:461.2 Biological Materials and Tissue Engineering - 547.1 Precious Metals - 741.1 Light/Optics - 761 Nanotechnology - 804 Chemical Products Generally

Numerical data indexing:Size 1.10e-08m, Size 9.80e-07m

DOI:10.1364/OE.25.014494

Funding details: Number: 61475156, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61361166004, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: -, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;

Funding text:National Natural Science Foundation of China (NSFC) (61361166004, 61475156)

Database:Compendex

Accession number:20173404075756

Title:Denoising algorithm of pulsar signal based on EMD with kurtosis test window

Authors:Wang, Lu (1); Li, Jianxun (1, 2); He, Tingting (1)

Author affiliation:(1) School of Automation and Information Engineering, Xi'an University of Technology, Xi'an; 710048, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics of Chinese Academy of Sciences, Xi'an; 710119, China

Source title:Xi Tong Gong Cheng Yu Dian Zi Ji Shu/Systems Engineering and Electronics

Abbreviated source title:Xi Tong Cheng Yu Dian Zi Ji Shu/Syst Eng Electron

Volume:39

Issue:6

Issue date:June 1, 2017

Publication year:2017

Pages:1208-1214

Language:Chinese

ISSN:1001506X

CODEN:XGYDEM

Document type:Journal article (JA)

Publisher:Chinese Institute of Electronics

Abstract:For the problem that pulsar signal and noise are aliasing on the intrinsic mode functions (IMF) during the empirical mode decomposition (EMD), a denoising method based on EMD with kurtosis test window is proposed. Firstly, the starting point for IMF refactoring is calculated by auto-correlation and cross-correlation. On that basis, the left and the right endpoints of the pulse part of signal from the former two IMFs of the starting point for refactoring are acquired by the local kurtosis test. Finally, the adaptive threshold method is used to remove noise and improve signal quality. The experimental results show that, compared with the other five methods, the proposed method has higher denoising performance, which can effectively eliminate the noises and retain the details in pulsar signal. © 2017, Editorial Office of Systems Engineering and Electronics. All right reserved.

Number of references:16

Main heading:Time domain analysis

Controlled terms:Higher order statistics - Pulsars - Signal denoising

Uncontrolled terms:Adaptive threshold method - Adaptive thresholds - Cross correlations - De-noising algorithm - Denoising methods - Empirical Mode Decomposition - Intrinsic Mode functions - Time domain windowing

Classification code:657.2 Extraterrestrial Physics and Stellar Phenomena - 716.1 Information Theory and Signal Processing - 921 Mathematics - 922.2 Mathematical Statistics

DOI:10.3969/j.issn.1001-506X.2017.06.04

Database:Compendex

Accession number:20172003675753

Title:Numerical investigation of a microfiberplane-grating composite optical waveguide for gas refractive index sensing

Authors:Ma, Chengju (1); Ren, Liyong (2); Guo, Wenge (1); Fu, Haiwei (1); Xu, Yiping (3); Liu, Yinggang (1); Wen, Jin (1)

Author affiliation:(1) School of Science, Xi'an Shiyou University, Xi'an; 710065, 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 Optoelectronic Engineering, Yangtze University, Jingzhou; 434023, China

Corresponding author:Ma, Chengju(chengjuma@xsyu.edu.cn)

Source title:Applied Optics

Abbreviated source title:Appl. Opt.

Volume:56

Issue:14

Issue date:May 10, 2017

Publication year:2017

Pages:3984-3988

Language:English

ISSN:1559128X

E-ISSN:21553165

CODEN:APOPAI

Document type:Journal article (JA)

Publisher:OSA - The Optical Society

Abstract:In this paper, we propose a microfiber-plane-grating composite optical waveguide (MPGCOW), which is formed by immobilizing a tapered microfiber on the surface of a plane grating with one defect, for gas refractive index (RI) sensing. Its optical properties and gas RI sensing properties are investigated by the finite difference time domain method. Results show that the MPGCOW has a photonic stop band and is very sensitive to the ambient gas RI variation. The largest gas RI sensing sensitivity of 486.67 nm/RIU and detection limit of 2 × 10-6are obtained by immersing the structure in the mixture gas of N<inf>2</inf>and He with various mixture ratios. © 2017 Optical Society of America.

Number of references:19

Main heading:Refractive index

Controlled terms:Finite difference time domain method - Gases - Mixtures - Optical waveguides - Surface defects - Time domain analysis

Uncontrolled terms:Composite optical waveguides - Detection limits - Gas refractive index - Mixture ratio - Numerical investigations - Photonic stop band - Plane grating - Sensing property

Classification code:741.1 Light/Optics - 741.3 Optical Devices and Systems - 921 Mathematics - 951 Materials Science

DOI:10.1364/AO.56.003984

Funding details: Number: SKLST201612, Acronym: -, Sponsor: -;Number: 2016JQ6051, Acronym: -, Sponsor: Natural Science Foundation of Shaanxi Province;Number: 2015BS01, Acronym: -, Sponsor: Doctoral Scientific Research Start-up Foundation from Henan University of Technology;Number: 61275149, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61505160, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61605018, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 15JK1578, Acronym: -, Sponsor: Education Department of Shaanxi Province;Number: -, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;

Funding text:National Natural Science Foundation of China (NSFC) (61275149, 61505160, 61605018); Scientific Research Program Funded by Shaanxi Provincial Education Department (15JK1578); Natural Science Foundation of Shaanxi Province (2016JQ6051); Doctoral Scientific Research Startup Foundation of Xi'an Shiyou University (2015BS01); Open Research Fund of State Key Laboratory of Transient Optics and Photonics (SKLST201612); Students Research Training Program of Xi'an Shiyou University.

Database:Compendex

Accession number:20172403756324

Title:Chiral long-period gratings: Fabrication, highly sensitive torsion sensing, and tunable single-band filtering

Authors:Kong, Xudong (1, 2); Ren, Kaili (1, 2); Ren, Liyong (1); Liang, Jian (1, 2); Ju, Haijuan (1, 2)

Corresponding author:Ren, Liyong(renliy@opt.ac.cn)

Source title:Applied Optics

Abbreviated source title:Appl. Opt.

Volume:56

Issue:16

Issue date:June 1, 2017

Publication year:2017

Pages:4702-4707

Language:English

ISSN:1559128X

E-ISSN:21553165

CODEN:APOPAI

Document type:Journal article (JA)

Publisher:OSA - The Optical Society

Abstract:A promising technology for fabricating chiral long-period gratings (CLPGs) is demonstrated using a commercial fusion splicer. The key aspect of this technology is the incorporation of a fully automatic program we designed for the fusion splicer. High-quality CLPGs are successfully fabricated from single-mode fibers, which have very flat surfaces and low insertion loss. We also investigate the tuning characteristics of the transmission spectrum with the mechanical twist rate in CLPGs for torsion sensing application. The torsion sensitivity is improved and the shift in resonance wavelength versus the mechanical twist rate shows an almost perfect linear relationship. In addition, by choosing appropriate fabrication parameters, the fabricated CLPGs can be used as tunable single-band-rejection filters in a broad wavelength range. © 2017 Optical Society of America.

Number of references:25

Main heading:Fabrication

Controlled terms:Fiber optic sensors - Notch filters - Single mode fibers - Torsional stress

Uncontrolled terms:Automatic programs - Fabrication parameters - Linear relationships - Long Period Gratings - Low insertion loss - Resonance wavelengths - Sensing applications - Transmission spectrums

Classification code:703.2 Electric Filters - 741.1.2 Fiber Optics

DOI:10.1364/AO.56.004702

Funding details: Number: 61535015, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61505246, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61275149, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: -, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;

Funding text:National Natural Science Foundation of China (NSFC) (61275149, 61505246, 61535015).

Database:Compendex

Accession number:20173104014252

Title:Optimization Design and Test for the Front Frame of a Large Off-axis TMA Space Camera

Authors:Wei, Lei (1, 2); Zhang, Lei (1, 3); Xie, Peng (1); Chen, Su (4)

Author affiliation:(1) Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun; 130033, China; (2) University of Chinese Academy of Sciences, Beijing; 100039, China; (3) Chang Guang Satellite Technology LTD. Co, Changchun; 130000, China; (4) 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:46

Issue:5

Issue date:May 1, 2017

Publication year:2017

Article number:0522001

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:To guarantee the high stability and high precision of an off-axis thee-mirror optical system space camera, a integration front frame structure was designed to support the second mirror and folded mirror according to the characteristics of the same height of second mirror and folded mirror in optical axis direction, and a topology optimization method based on constraint mode and free mode was proposed to optimize the front frame structure. Then, the integrated structure was assembled into the entire camera after optimization, and the finite element analysis of static was carried out. The results show that the camera maintains excellent static performance with the optical tilt between the primary mirror and secondary mirror being less than 9″ and the optical tilt between the primary mirror and fold mirror being less than 22.4″, the optical eccentricity between the primary mirror and secondary mirror being less than 0.021 mm, meeting the tolerance requirement of system. By free modal analysis and test to the integrated front frame structure, the results verify the correctness of the design method. The proposed topology optimization method can efficient avoid the defect of topology optimization based on constraint modal frequency that there is no relationship between the constraint points. It can provide reference for design the space camera with high-resolution and wide field. © 2017, Science Press. All right reserved.

Number of references:14

Main heading:Optical testing

Controlled terms:Cameras - Design - Finite element method - Mirrors - Modal analysis - Optical systems - Shape optimization - Structural frames - Topology

Uncontrolled terms:Front frame - Integrated structure - Modal test - Optimization design - Space cameras - Static performance - Tolerance requirement - Topology Optimization Method

Classification code:408.2 Structural Members and Shapes - 741.3 Optical Devices and Systems - 742.2 Photographic Equipment - 921 Mathematics

Numerical data indexing:Size 2.10e-05m

DOI:10.3788/gzxb20174605.0522001

Funding details: Number: 2016YFB0500904, Acronym: -, Sponsor: -;Number: 41501383, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;

Funding text:The National Natural Science Foundation of China (No.41501383) and National Key Research and Development Plan of Ministry of Science and Technology(No.2016YFB0500904).

Database:Compendex

Accession number:20171203489550

Title:Several nanosecond Nd:YVO<inf>4</inf>lasers Q-switched by two dimensional materials: Tungsten disulfide, molybdenum disulfide, and black phosphorous

Authors:Liu, Huan (1, 2); Sun, Zhe (1); Wang, Xi (1, 2); Wang, Yonggang (3); Cheng, Guanghua (1)

Corresponding author:Cheng, Guanghua(gcheng@opt.ac.cn)

Source title:Optics Express

Abbreviated source title:Opt. Express

Volume:25

Issue:6

Issue date:March 20, 2017

Publication year:2017

Pages:6244-6252

Language:English

E-ISSN:10944087

Document type:Journal article (JA)

Publisher:OSA - The Optical Society

Abstract:Graphene-like two-dimensional (2D) materials have shown remarkable broadband saturable absorption properties. These materials were successfully applied into mode locked lasers to generate laser pulses with the pulse duration from picosecond to femtosecond. However, these novel materials have not shown good performance as far in another important aspect: Q-switched lasers. Solid-state or fiber lasers Q-switched with broadband absorbers usually generated pulses of one hundred nanosecond to several microsecond, which show weak competitiveness compared to traditional absorbers such as Cr: YAG and semiconductor saturable absorption mirror (SESAM). In this paper we utilized BP, WS<inf>2</inf>and MoS<inf>2</inf>solutions as saturable absorbers (SAs) to construct the passively Q-switched Nd:YVO<inf>4</inf>lasers. The pulse durations as short as 2.86 nanosecond was obtained. To the best of our knowledge, it was the first report that the pulse durations approached several nanosecond level in Q-switched lasers with liquid-form of BP, WS<inf>2</inf>and MoS<inf>2</inf>SAs. © 2017 Optical Society of America.

Number of references:48

Main heading:Semiconductor saturable absorber mirrors

Controlled terms:Fiber lasers - Laser mirrors - Layered semiconductors - Liquid lasers - Molybdenum compounds - Neodymium compounds - Phosphorus - Q switched lasers - Q switching - Semiconductor lasers - Semiconductor quantum wells - Solid state lasers - Sulfur compounds - Tungsten compounds - Yttrium aluminum garnet

Uncontrolled terms:Broadband absorbers - Molybdenum disulfide - Passively Q-switched - Saturable absorption - Semiconductor saturable absorption mirror - Tungsten disulfide - Two Dimensional (2 D) - Two-dimensional materials

Classification code:714.2 Semiconductor Devices and Integrated Circuits - 744 Lasers - 804 Chemical Products Generally

Numerical data indexing:Time 2.86e-09s

DOI:10.1364/OE.25.006244

Funding details: Number: XAB2015B27, Acronym: CAS, Sponsor: Chinese Academy of Sciences;Number: 61378019, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61378024, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;

Funding text:West Young Scholar Foundation of the Chinese Academy of Sciences, (Grant No: XAB2015B27) and the National Natural Science Foundation of China, (Grant No: 61378024, 61378019).

Database:Compendex

Accession number:20172703889327

Title:Decoding techniques of single-ring absolute photoelectric shaft encoder

Authors:Su, Xiaogang (1, 2); Hu, Xiaodong (1); Xiao, Maosen (1); Zhang, Xiaodong (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:46

Issue:4

Issue date:April 25, 2017

Publication year:2017

Article number:0411007

Language:Chinese

ISSN:10072276

Document type:Journal article (JA)

Publisher:Chinese Society of Astronautics

Abstract:In comparison with incremental and traditional absolute encoder, the single-ring absolute encoder processes more advantage. And the research of decoding system and algorithm are essential to the single-ring absolute encoder. In order to improve single-ring absolute photoelectric encoder's circuit integration, response speed and accuracy, a decoding system was designed in this paper. Linear CCD was used in this system as the disc image receiving and photoelectric conversion device which also provided the basement of subdivision algorithm. And FPGA was used to achieve circuit control and decoding algorithm. A new decoding algorithm was also proposed in this paper. On the one hand, the coding information was achieved by counting high electrical level of the binaryzation signal of CCD's output. Coding information was obtained by recognition of the disc image and combination of 12-bits coding number. On the other hand, precise value was obtained by calculating the shifting between the centroid of image and virtual center. The centroid of stripe was calculated based on CCD centroid location algorithm. Finally, the value of angle was precisely received from combination of these two values. A prototype of theodolite was developed based on this single-ring absolute encoder decoding system and can reach the accuracy of 2". © 2017, Editorial Board of Journal of Infrared and Laser Engineering. All right reserved.

Number of references:12

Main heading:Signal encoding

Controlled terms:Decoding - Image coding - Photoelectricity

Uncontrolled terms:Centroid algorithm - Circuit integration - Decoding techniques - Linear CCD - Location algorithms - Photoelectric conversion - Photoelectric encoders - Subdivision algorithms

Classification code:701.1 Electricity: Basic Concepts and Phenomena - 716.1 Information Theory and Signal Processing - 723.2 Data Processing and Image Processing

DOI:10.3788/IRLA201746.0411007

Database:Compendex

Accession number:20172803922836

Title:Research on position error of sparse optical system

Authors:Wang, Chenchen (1, 2); Shen, Yang (1, 2); Zou, Gangyi (1, 2); Li, Ruichang (1, 2); Fan, Xuewu (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:Wang, Chenchen(wangchenchen@opt.ac.cn)

Source title:Optik

Abbreviated source title:Optik

Volume:144

Issue date:September 2017

Publication year:2017

Pages:191-198

Language:English

ISSN:00304026

Document type:Journal article (JA)

Publisher:Elsevier GmbH

Abstract:The main method to improve the resolution of optical system is to increase the aperture of the optical system, and it is a common method to use the sparse-aperture mirrors to obtain a large aperture primary mirror. The primary mirror of optical system is deployed when it is launched into the orbit, and the deviation between deployed position and design position determines the quality of the optical system. So it is necessary to analyze the position accuracy of segmented mirrors. Sparse-aperture optical system is modeled by optical software Zemax, and by adjusting six degrees of freedom of segmented mirrors can get curves between position error and image quality. The results show that different positions of segmented mirrors can produce different wave-front when they have same position error. Moving along the Z axis, the inner mirrors influence most while the outer ones influence smallest; tilt along the X axis, middle ones have maximum wave-front aberration while the outer ones produce minimum wave-front aberration. When tilt along Y axis, middle segmented mirrors have the smallest wave-front aberration and outer ones have maximum. Two methods are used to distribute the wave-front aberration onto each segmented mirror. One is that according to the relationship curves, distribute the position error to each segmented mirror alone. Another is that each one has same position errors. The final result shows that the former method has a more relax position error when generates the same wave-front aberration. © 2017 Elsevier GmbH

Number of references:14

Main heading:Optical systems

Controlled terms:Aberrations - Degrees of freedom (mechanics) - Errors - Image analysis - Mirrors - Modulation - Optical design - Wavefronts

Uncontrolled terms:Geometric optical designs - Optical software - Position accuracy - Primary mirrors - Segmented mirror - Six degrees of freedom - Sparse aperture - Wavefront aberrations

Classification code:741.1 Light/Optics - 741.3 Optical Devices and Systems - 931.1 Mechanics

DOI:10.1016/j.ijleo.2017.06.082

Database:Compendex

Accession number:20172803941563

Title:Effects of doping B<inf>2</inf>O<inf>3</inf>on the defects-state in SiO<inf>2</inf>-containing phosphate based glasses

Authors:He, Quanlong (1, 2); Wang, Pengfei (1); Sun, Mengya (1, 2); Lu, Min (1); Peng, And Bo (1)

Source title:Optical Materials Express

Abbreviated source title:Opt. Mater. Express

Volume:7

Issue:8

Issue date:2017

Publication year:2017

Pages:2697-2705

Language:English

E-ISSN:21593930

Document type:Journal article (JA)

Publisher:OSA - The Optical Society

Abstract:The effects of doping B<inf>2</inf>O<inf>3</inf>on the defects and their induced anti-radiation performance change of the multicomponent phosphate glasses were studied in this work. The introduction of B<inf>2</inf>O<inf>3</inf>reduces the connectivity of phosphate chains and thus increases the concentration of PO3-EC and PO4-EC defects in the phosphate glass network that have large absorption in the high-energy region. Meanwhile, B<inf>2</inf>O<inf>3</inf>can improve the oxidizability of those glasses at the same melting temperature under which Fe2+ions will be more easily oxidized to Fe3+ions. However, the addition of B<inf>2</inf>O<inf>3</inf>in terms of H3BO3, as it reaches up to 7.5 wt%, could enhance the gamma radiation resistance of the phosphate glasses, in this case B<inf>2</inf>O<inf>3</inf>, and enter the phosphate glass network in the form of B5O8 units. The units enhanced the connectivity of the long phosphate chains, and thus reduced the concentration of PO3-EC and PO4-EC defects in phosphate glasses. © 2017 Optical Society of America.

Number of references:21

Main heading:Glass

Controlled terms:Chains - Defects - Radiation effects - Silica

Uncontrolled terms:Anti radiations - High energy regions - Multicomponents - Oxidizability - Phosphate based glass - Phosphate chain - Phosphate glass - Radiation resistance

Classification code:602.1 Mechanical Drives - 812.3 Glass - 951 Materials Science

DOI:10.1364/OME.7.002697

Funding details: Number: 2017446, Acronym: -, Sponsor: Youth Innovation Promotion Association of the Chinese Academy of Sciences;Number: 2015JM6315, Acronym: -, Sponsor: Natural Science Foundation of Shaanxi Province;Number: XAB2016A08, Acronym: CAS, Sponsor: Chinese Academy of Sciences;Number: 61307046, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: -, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;

Funding text:National Natural Science Foundation of China (NSFC No.61307046); Natural Science Basic Research Project in Shaanxi Province (2015JM6315); West Young Scholars Program of the Chinese Academy of Sciences (XAB2016A08); and Youth Innovation Promotion Association CAS (2017446), China.

Database:Compendex

Accession number:20171703607535

Title:Automatic seamless image mosaic method based on SIFT features

Authors:Liu, Meiying (1, 2); Wen, Desheng (1)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Science, No. 17 Xinxi Road, Xi'an; 710119, China; (2) University of Chinese, Academy of Sciences, 19 A Yuquan Rd, Shijingshan District, Beijing; 100049, 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:10256

Part number:1 of 1

Issue title:Second International Conference on Photonics and Optical Engineering

Issue date:2017

Publication year:2017

Article number:1025636

Language:English

ISSN:0277786X

E-ISSN:1996756X

CODEN:PSISDG

Document type:Conference article (CA)

Conference name:2nd International Conference on Photonics and Optical Engineering

Conference date:October 14, 2016

Conference location:Xi'an, China

Conference code:127345

Publisher:SPIE

Abstract:An automatic seamless image mosaic method based on SIFT features is proposed. First a scale-invariant feature extracting algorithm SIFT is used for feature extraction and matching, which gains sub-pixel precision for features extraction. Then, the transforming matrix H is computed with improved PROSAC algorithm, compared with RANSAC algorithm,the calculate efficiency is advanced, and the number of the inliers are more. Then the transforming matrix H is purify with LM algorithm. And finally image mosaic is completed with smoothing algorithm. The method implements automatically and avoids the disadvantages of traditional image mosaic method under different scale and illumination conditions. Experimental results show the image mosaic effect is wonderful and the algorithm is stable very much. It is high valuable in practice. © 2017 SPIE.

Number of references:10

Main heading:Photonics

Controlled terms:Extraction

Uncontrolled terms:Feature extraction and matching - Features extraction - Illumination conditions - Image mosaic - Scale invariant features - Seamless image mosaic - SIFT Feature - Smoothing algorithms

Classification code:741.1 Light/Optics - 802.3 Chemical Operations

DOI:10.1117/12.2257792

Funding details: Number: 61107008, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61105017, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;

Funding text:This work has been supported by: (1) National Natural Science Foundation of China under the contract No.61107008 and No.61105017.

Database:Compendex

Accession number:20180404670972

Title:A star image registration algorithm based on joint feature matching

Authors:Li, Zhao (1, 2); Wen, Yan (1)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics of CAS, Xi'an, Shaanxi; 710119, China; (2) University of Chinese Academy of Sciences, Beijing; 10049, China

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

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:10462

Part number:1 of 1

Issue title:AOPC 2017: Optical Sensing and Imaging Technology and Applications

Issue date:2017

Publication year:2017

Article number:1046212

Language:English

ISSN:0277786X

E-ISSN:1996756X

CODEN:PSISDG

ISBN-13:9781510614055

Document type:Conference article (CA)

Conference name:Applied Optics and Photonics China: Optical Sensing and Imaging Technology and Applications, AOPC 2017

Conference date:June 4, 2017 - June 6, 2017

Conference location:Beijing, China

Conference code:133396

Sponsor:Chinese Society for Optical Engineering; The Society of Photo-Optical Instrumentation Engineers (SPIE)

Publisher:SPIE

Abstract:With the amount of space debris increasing accordingly with human activities in near space, the threat of space debris to space missions raises the concern of surveillance of these malicious targets. Space target detection based on optical image is a feasible and effective solution for monitoring these malicious targets. However, as the observation platform is nonestationary, image obtained from the telescope need registration for further operation. In this paper, a star image registration algorithm based on joint feature matching is proposed. The star images are firstly denoised by filtering system. Then reference stars are preselected and their features are constructed. By matching the extracted features, a pool of star pairs is established. Transform parameters are derived from the locations of these matched pairs. Experimental results have validated the capability of our algorithm in pixel accurate star image registration. © 2017 SPIE.

Number of references:10

Main heading:Stars

Controlled terms:Geometrical optics - Image registration - Space debris

Uncontrolled terms:Effective solution - Feature construction - Feature matching - Filtering systems - Human activities - Reference Star - Registration - Star images

Classification code:656.1 Space Flight - 657.2 Extraterrestrial Physics and Stellar Phenomena - 723.2 Data Processing and Image Processing - 741.1 Light/Optics

DOI:10.1117/12.2283215

Database:Compendex

Accession number:20175104560054

Title:Removal functions of different polishing heads worked in planet motion model

Authors:Yao, Yong-Sheng (1); Ma, Zhen (1); Xu, Liang (1); Ding, Jiao-Teng (1); Wang, Yong-Jie (1); Shen, Le (1); Jiang, Bo (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

Corresponding author:Yao, Yong-Sheng(ganglangyao@126.com)

Source title:Guangxue Jingmi Gongcheng/Optics and Precision Engineering

Abbreviated source title:Guangxue Jingmi Gongcheng

Volume:25

Issue:10

Issue date:October 1, 2017

Publication year:2017

Pages:2706-2713

Language:Chinese

ISSN:1004924X

CODEN:GJGOF4

Document type:Journal article (JA)

Publisher:Chinese Academy of Sciences

Abstract:To obtain Gaussian-like removal function in optical manufacturing process, a convenient method to derive the removal functions of various complicated polishing heads by integrating the rotation removal function along the revolution trajectory was proposed based on the traditional planet polising theory. When the speed ratio was greater than 10,the removal function curve of a solid disk by the proposed method was very close to the result by the traditional method, which verifies the correctness of the proposed method. The proposed method was used to derive polishing removal functions of different polishing heads. By computer simulation, it shows that type II petal polishing head gets a better removal function curve when the eccentricity ratio is 0.4.Finally, the type II petal polishing head was polished, and the results indicate that when the eccentricity ratio was 0.4 and the speed ratio is 10,the test and simulation results are consistent with each other and they are all close to the Gaussian curve. These test result verifies the correctness of the proposed method again. © 2017, Science Press. All right reserved.

Number of references:19

Main heading:Polishing

Controlled terms:Gaussian distribution

Uncontrolled terms:Eccentricity ratios - Gaussian curves - Motion modeling - Optical manufacturing - Polishing head - Removal function - Solid disks - Speed ratio

Classification code:604.2 Machining Operations - 922.1 Probability Theory

DOI:10.3788/OPE.20172510.2706

Database:Compendex

Accession number:20180404671166

Title:A self-Adaptive remote sensing image enhancement method based on gradient and intensity histogram

Authors:Lu, Zhuanli (1, 2); Liu, Jiahang (1); Chen, Tieqiao (1, 2); Kang, Chaomeng (1, 2); Yu, Kai (1, 2)

Author affiliation:(1) 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:10462

Part number:1 of 1

Issue title:AOPC 2017: Optical Sensing and Imaging Technology and Applications

Issue date:2017

Publication year:2017

Article number:104623I

Language:English

ISSN:0277786X

E-ISSN:1996756X

CODEN:PSISDG

ISBN-13:9781510614055

Document type:Conference article (CA)

Conference name:Applied Optics and Photonics China: Optical Sensing and Imaging Technology and Applications, AOPC 2017

Conference date:June 4, 2017 - June 6, 2017

Conference location:Beijing, China

Conference code:133396

Sponsor:Chinese Society for Optical Engineering; The Society of Photo-Optical Instrumentation Engineers (SPIE)

Publisher:SPIE

Abstract:It is crucial to enhance the lower contrast Remote remote sensing images to obtain more details information for further remote sensing image processing and application. In this letter here, a self-Adaptive remote sensing image contrast enhancement method has been proposed. The method is an improvement, based on gradient and intensity histogram equalization (GIHE) by using the advantage of histogram compaction transform (HCT). Firstly, we obtained two enhanced images by GIHE and HCT, respectively. Then furthermore, the two enhaceed images were normalized with a self-Adaptive paremeter, which based on standard deviation and mean of the gradient. Finally and then, we modified the normalized image by dual-gamma function for preserving the local details. It's evidenced that the proposed method have more richer details and better subjective visual quality, comparedwith the other methods. The experimental results depicted in terms of PSNR, MAE and Q. Comparing with the other methods, the proposed method had richer details and better subjective visual quality. © 2017 SPIE.

Number of references:10

Main heading:Image enhancement

Controlled terms:Adaptive optics - Compaction - Equalizers - Graphic methods - Optical data processing - Remote sensing

Uncontrolled terms:Contrast Enhancement - Dual-gamma modification - Histogram compaction transform (HCT) - Intensity histograms - Remote sensing images

Classification code:713.5 Electronic Circuits Other Than Amplifiers, Oscillators, Modulators, Limiters, Discriminators or Mixers - 723.2 Data Processing and Image Processing - 741.1 Light/Optics

DOI:10.1117/12.2285168

Funding details:

Funding text:This work was supported in part by the National Key Research and Development Program through Grant

Database:Compendex

Accession number:20173904210171

Title:Multifeature anisotropic orthogonal Gaussian process for automatic age estimation

Authors:Li, Zhifeng (1); Gong, Dihong (2); Zhu, Kai (3); Tao, Dacheng (4, 5); Li, Xuelong (6)

Author affiliation:(1) Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China; (2) Guangdong Provincial Key Laboratory of Computer Vision and Virtual Reality Technology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China; (3) Department of Information Engineering, Chinese University of Hong Kong, Hong Kong; (4) UBTECH Sydney Artificial Intelligence Centre, J12, 6 Cleveland St, Darlington; NSW; 2008, Australia; (5) School of Information Technologies, Faculty of Engineering and Information Technologies, University of Sydney, J12, 6 Cleveland St, Darlington; NSW; 2008, Australia; (6) 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

Source title:ACM Transactions on Intelligent Systems and Technology

Abbreviated source title:ACM Trans. Intell. Syst. Technolog.

Volume:9

Issue:1

Issue date:August 2017

Publication year:2017

Article number:2

Language:English

ISSN:21576904

E-ISSN:21576912

Document type:Journal article (JA)

Publisher:Association for Computing Machinery

Abstract:Automatic age estimation is an important yet challenging problem. It has many promising applications in social media. Of the existing age estimation algorithms, the personalized approaches are among the most popular ones. However, most person-specific approaches rely heavily on the availability of training images across different ages for a single subject, which is usually difficult to satisfy in practical application of age estimation. To address this limitation,we first propose a new model called Orthogonal Gaussian Process (OGP), which is not restricted by the number of training samples per person. In addition, without sacrifice of discriminative power, OGP is much more computationally efficient than the standard Gaussian Process. Based on OGP, we then develop an effective age estimation approach, namely anisotropic OGP (A-OGP), to further reduce the estimation error. A-OGP is based on an anisotropic noise level learning scheme that contributes to better age estimation performance. To finally optimize the performance of age estimation, we propose a multifeature A-OGP fusion framework that uses multiple features combined with a random sampling method in the feature space. Extensive experiments on several public domain face aging datasets (FG-NET, MORPH Album1, and MORPH Album 2) are conducted to demonstrate the state-of-the-art estimation accuracy of our new algorithms. © 2017 ACM.

Number of references:49

Main heading:Gaussian distribution

Controlled terms:Anisotropy - Gaussian noise (electronic) - Human computer interaction

Uncontrolled terms:Age estimation - Anisotropic noise - Computationally efficient - Discriminative power - Face images - Gaussian Processes - Multiple features - Random sampling method

Classification code:922.1 Probability Theory - 931.2 Physical Properties of Gases, Liquids and Solids

DOI:10.1145/3090311

Funding details: Number: -, Acronym: -, Sponsor: University of Sydney;Number: 2014A030313688, Acronym: -, Sponsor: Natural Science Foundation of Guangdong Province;Number: -, Acronym: CUHK, Sponsor: Chinese University of Hong Kong;Number: FT-130101457, Acronym: ARC, Sponsor: Australian Research Council;Number: LP-150100671, Acronym: ARC, Sponsor: Australian Research Council;Number: DP-140102164, Acronym: ARC, Sponsor: Australian Research Council;Number: 172644KYSB20160033, Acronym: CAS, Sponsor: Chinese Academy of Sciences;Number: -, Acronym: ACM, Sponsor: Anacostia Community Museum;

Funding text:This work was funded by the External Cooperation Program of BIC, the Chinese Academy of Sciences (172644KYSB20160033), Australian Research Council Projects (FT-130101457, DP-140102164, and LP-150100671), and Natural Science Foundation of Guangdong Province (2014A030313688). Authors’ addresses: Z. Li, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China; email: zhifeng.li@siat.ac.cn; D. Gong, Guangdong Provincial Key Laboratory of Computer Vision and Virtual Reality Technology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China; email: gongd@ufl.edu; K. Zhu, Department of Information Engineering, Chinese University of Hong Kong, Hong Kong; email: zk013@ie.cuhk.edu.hk; D. Tao, UBTECH Sydney Artificial Intelligence Centre and the School of Information Technologies in the Faculty of Engineering and Information Technologies at The University of Sydney, J12, 6 Cleveland St, Darlington, NSW 2008, Australia; email: dacheng.tao@sydney.edu.au; X. Li, 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, P. R. China; email: xuelong_li@opt.ac.cn. Permission to make digital or hard copies of part or all of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies show this notice on the first page or initial screen of a display along with the full citation. Copyrights for components of this work owned by others than ACM must be honored. Abstracting with credit is permitted. To copy otherwise, to republish, to post on servers, to redistribute to lists, or to use any component of this work in other works requires prior specific permission and/or a fee. Permissions may be requested from Publications Dept., ACM, Inc., 2 Penn Plaza, Suite 701, New York, NY 10121-0701 USA, fax + 1 (212) 869-0481, or permissions@acm.org. ？ 2017 ACM 2157-6904/2017/09-ART2 $15.00 https://doi.org/10.1145/3090311

Database:Compendex

Accession number:20174504368492

Title:Characteristis research of diffuser panel in near backscatter measurement system

Authors:Han, Yang (1, 2); He, Junhua (1); Yan, Yadong (1); Wu, Bingjing (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:46

Issue:9

Issue date:September 25, 2017

Publication year:2017

Article number:0917002

Language:Chinese

ISSN:10072276

Document type:Journal article (JA)

Publisher:Chinese Society of Astronautics

Abstract:Based on the analysis of near back scattered light in laser fusion, a method was proposed to collect near back scattered light by using diffuser panel. Based on the analysis of the application scenarios of the diffuser panel, the characteristic of the diffuser panel was presented. A device for measuring the characteristics of diffuser panel was set up. The directional hemispherical reflectance (DHR), bidirectional reflectance distribution function, surface uniformity, vacuum and UV properties were measured and analyzed. The analysis results show that the F<inf>4</inf>target panel has a high reflectivity close to 0.99, the spectral flatness, the bidirectional reflectance distribution function (BRDF) of approximate cosine distribution, 0.869 6% of the higher surface uniformity, as well as the smaller UV vacuum influence. Therefore, the F<inf>4</inf>target panel meets the measurement requirements of the near back scattered light in laser inertial confinement fusion (ICF), and it is feasible to use the diffuser panel to collect the near back scattered light. © 2017, Editorial Board of Journal of Infrared and Laser Engineering. All right reserved.

Number of references:12

Main heading:Distribution functions

Controlled terms:Backscattering - Inertial confinement fusion - Light scattering - Reflection

Uncontrolled terms:Application scenario - Backscattered light - Bidirectional reflectance distribution functions - Cosine distributions - Directional hemispherical reflectances - High reflectivity - Measurement system - Surface uniformity

Classification code:741.1 Light/Optics - 922.1 Probability Theory - 932.2.1 Fission and Fusion Reactions

DOI:10.3788/IRLA201746.0917002

Database:Compendex

Accession number:20173504083070

Title:Integrated kerr comb-based reconfigurable transversal differentiator for microwave photonic signal processing

Authors:Xu, Xingyuan (1); Wu, Jiayang (1); Shoeiby, Mehrdad (2); Nguyen, Thach G. (2); Chu, Sai T. (3); Little, Brent E. (4); Morandotti, Roberto (5, 6, 7); Mitchell, Arnan (2); Moss, David J. (1)

Corresponding author:Moss, David J.(dmoss@swin.edu.au)

Source title:Optics InfoBase Conference Papers

Abbreviated source title:Opt. InfoBase Conf. Pap

Volume:Part F52-IPRSN 2017

Part number:1 of 1

Issue title:Advanced Photonics, IPRSN 2017

Issue date:2017

Publication year:2017

Language:English

ISBN-13:9781557528209

Document type:Conference article (CA)

Conference name:Advanced Photonics, IPRSN 2017

Conference date:July 24, 2017 - July 27, 2017

Conference location:New Orleans, LA, United states

Conference code:136878

Publisher:OSA - The Optical Society

Abstract:An integrated reconfigurable transversal differentiator is achieved based on an integrated nonlinear micro-ring resonator. The RF responses of different orders of differentiation are experimentally characterized. Systems demonstrations for Gaussian input signals are also performed. © OSA 2017.

Number of references:8

Page count:3

Main heading:Signal processing

Controlled terms:Optical resonators

Uncontrolled terms:Differentiators - Gaussian inputs - Microring resonator - Microwave Photonics - Reconfigurable

Classification code:716.1 Information Theory and Signal Processing - 741.3 Optical Devices and Systems

DOI:10.1364/IPRSN.2017.IW1A.6

Database:Compendex

Accession number:20180304654848

Title:Rearranging the lenslet array of the compact passive interference imaging system with high resolution

Authors:Liu, Gang (1, 2); Wen, Desheng (1); Song, Zongxi (1)

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

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

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:10463

Part number:1 of 1

Issue title:AOPC 2017: Space Optics and Earth Imaging and Space Navigation

Issue date:2017

Publication year:2017

Article number:1046310

Language:English

ISSN:0277786X

E-ISSN:1996756X

CODEN:PSISDG

ISBN-13:9781510614079

Document type:Conference article (CA)

Conference name:Applied Optics and Photonics China: Space Optics and Earth Imaging and Space Navigation, AOPC 2017

Conference date:June 4, 2017 - June 6, 2017

Conference location:Beijing, China

Conference code:133232

Sponsor:Chinese Society for Optical Engineering; The Society of Photo-Optical Instrumentation Engineers (SPIE)

Publisher:SPIE

Abstract:With the development of aeronautics and astronautics, higher resolution requirement of the telescope was necessary. However, the increase in resolution of conventional telescope required larger apertures, whose size, weight and power consumption could be prohibitively expensive. This limited the further development of the telescope. This paper introduced a new imaging technology using interference-Compact Passive Interference Imaging Technology with High Resolution, and proposed a rearranging method for the arrangement of the lenslet array to obtain continuously object spatial frequency. © 2017 SPIE.

Number of references:8

Main heading:Image resolution

Controlled terms:Earth (planet) - Telescopes

Uncontrolled terms:High resolution - Higher resolution - Imaging technology - Lenslet array - Optical interferometry - Passive interference - Rearranging - Spatial frequency

Classification code:746 Imaging Techniques

DOI:10.1117/12.2283216

Database:Compendex

Accession number:20172003680377

Title:Hardware in-loop system for X-ray pulsar-based navigation and experiments

Authors:Zhang, Dapeng (1); Zheng, Wei (1); Sheng, Lizhi (2); Wang, Yidi (1); Xu, Neng (2)

Author affiliation:(1) College of Aerospace Science and Engineering, National University of Defense Technology, Changsha; 410073, China; (2) Xi’an Institute of Optics and Precision Mechanics of CAS, Xi’an; 710119, China

Corresponding author:Zheng, Wei(zhengwei@nudt.edu.cn)

Source title:Lecture Notes in Electrical Engineering

Abbreviated source title:Lect. Notes Electr. Eng.

Volume:438

Part number:2 of 3

Issue title:China Satellite Navigation Conference, CSNC 2017 Proceedings

Issue date:2017

Publication year:2017

Pages:553-563

Language:English

ISSN:18761100

E-ISSN:18761119

ISBN-13:9789811045905

Document type:Conference article (CA)

Conference name:8th China Satellite Navigation Conference, CSNC 2017

Conference date:May 23, 2017 - May 25, 2017

Conference location:Shanghai, China

Conference code:191589

Publisher:Springer Verlag

Abstract:X-ray pulsar-based navigation uses natural objects, the neutron star, in space as the navigation signal source. The advantages of the method are navigation information is complete, and the reliability and autonomy are high. It is a research hot spot at present both at home and abroad. As a result of the X-ray signal from the pulsars is very weak, it cannot penetrate the thickset atmosphere. In order to validate the pulsar navigation algorithms closer to the real conditions on ground, the special Hardware in-Loop System should be used to do the experiments. This paper adopted the system “Tianshu-II” which is developed by National University of Defense Technology and Xi’an Institute of Optics and Precision Mechanics research institute. A series of X-ray pulsar-based navigation experiments are carried out. Experimental results show that the algorithms are reliable. They are verified to be effective in the hardware-in-the-loop simulation. © Springer Nature Singapore Pte Ltd. 2017.

Number of references:10

Main heading:X rays

Controlled terms:Electromagnetic wave emission - Experiments - Hardware - Navigation - Pulsars - Satellite navigation aids - Traction (friction)

Uncontrolled terms:Defense technologies - Hardware in loop - Navigation in formation - Navigation signals - Precision mechanics - Pulsar navigations - Research institutes - X-ray pulsars

Classification code:605 Small Tools and Hardware - 655.2 Satellites - 657.2 Extraterrestrial Physics and Stellar Phenomena - 711 Electromagnetic Waves - 901.3 Engineering Research - 931.1 Mechanics - 932.1 High Energy Physics

DOI:10.1007/978-981-10-4591-2_45

Database:Compendex

Accession number:20172403771228

Title:Four-wave mixing photon pair generation statistics for a nonlinear microcavity with chaotic and pulsed excitation

Authors:Roztocki, Piotr (1); Kues, Michael (1, 2); Reimer, Christian (1); Little, Brent E. (3); Chu, Sai T. (4); Moss, David J. (1, 5); Morandotti, Roberto (1, 6, 7)

Author affiliation:(1) INRS-EMT, 1650 Boulevard Lionel-Boulet, Varennes; QC; J3X 1S2, Canada; (2) School of Engineering, University of Glasgow, Rankine Building, Oakfield Avenue, Glasgow; G12 8LT, United Kingdom; (3) Xi'an Institute of Optics and Precision Mechanics of CAS, Xi'an, China; (4) Department of Physics and Material Science, City University of Hong Kong, Tat Chee Avenue, Hong Kong; (5) Center for Microphotonics, Swinburne University of Technology, Hawthorn; VIC; 3122, Australia; (6) National Research University of Information Technologies, Mechanics and Optics, St. Petersburg, Russia; (7) Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu; 610054, China

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

Source title:Optics InfoBase Conference Papers

Abbreviated source title:Opt. InfoBase Conf. Pap

Volume:Part F42-CLEO_QELS 2017

Part number:1 of 1

Issue title:CLEO: QELS_Fundamental Science, CLEO_QELS 2017

Issue date:2017

Publication year:2017

Language:English

ISBN-13:9781557528209

Document type:Conference article (CA)

Conference name:CLEO: QELS_Fundamental Science, CLEO_QELS 2017

Conference date:May 14, 2017 - May 19, 2017

Conference location:San Jose, CA, United states

Conference code:135898

Publisher:OSA - The Optical Society

Number of references:4

Page count:2

Main heading:Four wave mixing

Controlled terms:Locks (fasteners) - Microcavities - Photons

Uncontrolled terms:Excitation schemes - Mode-locked - Photon pair generations - Pulsed excitation

Classification code:714 Electronic Components and Tubes - 931.3 Atomic and Molecular Physics

DOI:10.1364/CLEO_QELS.2017.FTu4D.3

Database:Compendex

Accession number:20173404078690

Title:Type II micro-comb based on a filter-driven four wave mixing laser

Authors:Bao, Hualong (1); Cooper, Andrew (1); Chu, Sai T. (2); Moss, Dave J. (3); Morandotti, Roberto (4); Little, Brent E. (5); Peccianti, Marco (1); Pasquazi, Alessia (1)

Author affiliation:(1) Emergent Photonics (Epic) Lab, Dept. of Physics and Astronomy, University of Sussex, BN1 9QH, United Kingdom; (2) City University of Hong Kong, Tat Chee Avenue, Hong Kong; (3) Swinburne University of Technology, Hawthorn; VIC; 3122, Australia; (4) INRS-EMT, 1650 Boulevard Lionel-Boulet, Varennes; QC; J3X 1S2, Canada; (5) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Science, Xi'an, China

Corresponding author:Bao, Hualong(H.Bao@sussex.ac.uk)

Source title:Optics InfoBase Conference Papers

Abbreviated source title:Opt. InfoBase Conf. Pap

Volume:Part F52-IPRSN 2017

Part number:1 of 1

Issue title:Advanced Photonics, IPRSN 2017

Issue date:2017

Publication year:2017

Language:English

ISBN-13:9781557528209

Document type:Conference article (CA)

Conference name:Advanced Photonics, IPRSN 2017

Conference date:July 24, 2017 - July 27, 2017

Conference location:New Orleans, LA, United states

Conference code:136878

Publisher:OSA - The Optical Society

Abstract:We numerically and experimentally demonstrate the generation of Type II micro-combs in a Filter-Driven four wave mixing laser, showing that the generated Type II micro-combs are fully coherent. © OSA 2017.

Number of references:6

Page count:3

Main heading:Four wave mixing

Controlled terms:Bandpass filters - Comb filters

Uncontrolled terms:Type II

Classification code:703.2 Electric Filters

DOI:10.1364/IPRSN.2017.IM4A.4

Database:Compendex

Accession number:20172803900091

Title:Dimensionality reduction method based on a tensor model

Authors:Yan, Ronghua (1, 2); Peng, Jinye (1, 3); Ma, Dongmei (4); Wen, Desheng (2)

Author affiliation:(1) Northwestern Polytechnical University, School of Electronics and Information, Xian, China; (2) Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xian, China; (3) Northwest University, School of Information and Technology, Xian, China; (4) Xian Janssen Pharmaceutical Ltd, Xian, China

Corresponding author:Yan, Ronghua(yanronghua@opt.ac.cn)

Source title:Journal of Applied Remote Sensing

Abbreviated source title:J. Appl. Remote Sens.

Volume:11

Issue:2

Issue date:April 1, 2017

Publication year:2017

Article number:025011

Language:English

E-ISSN:19313195

CODEN:JARSC4

Document type:Journal article (JA)

Publisher:SPIE

Abstract:Dimensionality reduction is a preprocessing step for hyperspectral image (HSI) classification. Principal component analysis reduces the spectral dimension and does not utilize the spatial information of an HSI. Both spatial and spectral information are used when an HSI is modeled as a tensor, that is, the noise in the spatial dimension is decreased and the dimension in a spectral dimension is reduced simultaneously. However, this model does not consider factors affecting the spectral signatures of ground objects. This means that further improving classification is very difficult. The authors propose that the spectral signatures of ground objects are the composite result of multiple factors, such as illumination, mixture, atmospheric scattering and radiation, and so on. In addition, these factors are very difficult to distinguish. Therefore, these factors are synthesized as within-class factors. Within-class factors, class factors, and pixels are selected to model a third-order tensor. Experimental results indicate that the classification accuracy of the new method is higher than that of the previous methods. © 2017 Society of Photo-Optical Instrumentation Engineers (SPIE).

Number of references:19

Main heading:Tensors

Controlled terms:Hyperspectral imaging - Image processing - Principal component analysis - Spectroscopy

Uncontrolled terms:Atmospheric scattering - Classification accuracy - Dimensionality reduction - Dimensionality reduction method - Pre-processing step - Spatial informations - Spectral dimensions - Spectral information

Classification code:921.1 Algebra - 922.2 Mathematical Statistics

DOI:10.1117/1.JRS.11.025011

Database:Compendex

Accession number:20180704784160

Title:Long period fiber grating around the dispersion turning point fabricated with a femtosecond laser

Authors:Shen, Fangcheng (1); Zhou, Kaiming (2, 3); Zhang, Lin (2); Shu, Xuewen (1)

Author affiliation:(1) Wuhan National Laboratory for Optoelectronics and oSchool of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan; 430074, China; (2) Aston Institute of Photonic Technologies, Aston University, Birmingham; B4 7ET, United Kingdom; (3) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, China

Corresponding author:Shu, Xuewen(xshu@hust.edu.cn)

Source title:Optics InfoBase Conference Papers

Abbreviated source title:Opt. InfoBase Conf. Pap

Volume:Part F83-ACPC 2017

Part number:1 of 1

Issue title:Asia Communications and Photonics Conference, ACPC 2017

Issue date:2017

Publication year:2017

Language:English

ISBN-13:9781557528209

Document type:Conference article (CA)

Conference name:Asia Communications and Photonics Conference, ACPC 2017

Conference date:November 10, 2017 - November 13, 2017

Conference location:Huanshi Dong (City Ring East) Road, Guangzhou, Uangdong, 510064, China

Conference code:139338

Publisher:OSA - The Optical Society

Abstract:Long period fiber grating around the dispersion turning point, which exhibits high sensitivity to measurands such as temperature and refractive index, is fabricated in single mode fiber with a femtosecond laser for the first time. © 2017 OSA.

Number of references:5

Page count:3

Main heading:Diffraction gratings

Controlled terms:Dispersion (waves) - Fabrication - Femtosecond lasers - Photonics - Refractive index - Single mode fibers

Uncontrolled terms:High sensitivity - Long period fiber grating - Turning points

Classification code:741 Light, Optics and Optical Devices

DOI:10.1364/ACPC.2017.Su2A.104

Database:Compendex

Accession number:20173304042248

Title:Large aperture lidar receiver optical system based on diffractive primary lens

Authors:Zhu, Jinyi (1, 2); Xie, Yongjun (1)

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

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

Volume:46

Issue:5

Issue date:May 25, 2017

Publication year:2017

Article number:0518001

Language:Chinese

ISSN:10072276

Document type:Journal article (JA)

Publisher:Chinese Society of Astronautics

Abstract:Diffractive optical systems are promising in large aperture lidar receiver applications. The negative dispersion effect on lidar image quality caused by the diffractive primary lens was analyzed. Two chromatic aberration correcting methods, inserting high dispersion glass and adopting Schupmann theory, were discussed. An achromatic system based on Schupmann theory was lightweight, and provided perfect image quality. And the system light transmittance was over 60%. A design of lidar receiver optical system with 1m aperture and 1 mrad max FOV was demonstrated, and the system f/# was 8. The image quality attained diffraction limit approximately. © 2017, Editorial Board of Journal of Infrared and Laser Engineering. All right reserved.

Number of references:22

Main heading:Aberrations

Controlled terms:Diffraction - Dispersions - Image quality - Lenses - Optical design - Optical radar - Optical systems

Uncontrolled terms:Achromatic - Achromatic system - Chromatic aberration - Diffraction limits - Diffractive lens - Diffractive optical systems - Dispersion effect - Light transmittance

Classification code:741.1 Light/Optics - 741.3 Optical Devices and Systems - 951 Materials Science

Numerical data indexing:Percentage 6.00e+01%, Size 1.00e+00m

DOI:10.3788/IRLA201746.0518001

Database:Compendex

Accession number:20173804169208

Title:A universal pedestrian's foot-point and head-point recognition with improved motion detection algorithm

Authors:Shi, Liu (1, 2); Liu, Jiahang (1); Yihao, Wang (1)

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

Source title:2017 2nd International Conference on Image, Vision and Computing, ICIVC 2017

Abbreviated source title:Int. Conf. Image, Vis. Comput., ICIVC

Part number:1 of 1

Issue title:2017 2nd International Conference on Image, Vision and Computing, ICIVC 2017

Issue date:July 18, 2017

Publication year:2017

Pages:281-287

Article number:7984562

Language:English

ISBN-13:9781509062379

Document type:Conference article (CA)

Conference name:2nd International Conference on Image, Vision and Computing, ICIVC 2017

Conference date:June 2, 2017 - June 4, 2017

Conference location:Chengdu, China

Conference code:129351

Publisher:Institute of Electrical and Electronics Engineers Inc.

Abstract:Detecting pedestrians' spatial locations is a key, yet challenging task in video surveillance. From video sequences, we can apply motion detection algorithm to detect the whole pedestrians, and recognize pedestrians' foot-point locations with foot-point recognition method. While we propose a solution to recognize pedestrians' head-point locations for partially occluded pedestrians in complex scenes. Then, a few simple mappings can be used for converting head-point to foot-point and converting 2-D locations to 3-D spatial locations in computer vision. In this paper, we present a pixel-level background sample set motion detection approach based on Self-Balanced SENsitivity SEgmenter, coined SuBSENSE algorithm. Instead of using the same background/foreground segmentation criterion for low and high brightness distribution areas, we use completely different segmentation criterion for low and high brightness, respectively. Besides, for an actual scenario with camouflaged foreground objects, simple color and texture feature could not detect these motion objects. To best address these disadvantages, we introduce normalized color feature and extended local binary similarity pattern (ELBSP) operator by adaptive threshold to segment motion objects for high brightness while providing normalized color feature by perception-inspired confidence interval for high brightness. Due to the diversity of camera gesture in video images, we can't directly gain foot-point and head-point location from the results of motion detection. For foot-point, principal component analysis is employed in getting pedestrian's upright direction and mapping the whole object to this direction. Moreover, color feature, area feature, and position feature are utilized for detecting head-point. Experiments show that it outperforms original motion detection approach and several state-of-the-art methods, and can accurately obtain pedestrians' 2-D locations in real scenarios. © 2017 IEEE.

Number of references:15

Main heading:Motion analysis

Controlled terms:Color - Feature extraction - Financial data processing - Image segmentation - Location - Luminance - Mapping - Motion compensation - Object detection - Principal component analysis - Security systems - Signal detection

Uncontrolled terms:Color and texture features - Foot points - Head-point - Motion detection - Recognition methods - Similarity patterns - State-of-the-art methods - Video surveillance

Classification code:405.3 Surveying - 716.1 Information Theory and Signal Processing - 723.2 Data Processing and Image Processing - 741.1 Light/Optics - 914.1 Accidents and Accident Prevention - 922.2 Mathematical Statistics

DOI:10.1109/ICIVC.2017.7984562

Database:Compendex

Accession number:20161002045137

Title:Modeling Disease Progression via Multisource Multitask Learners: A Case Study with Alzheimer's Disease

Authors:Nie, Liqiang (1); Zhang, Luming (2); Meng, Lei (3); Song, Xuemeng (4); Chang, Xiaojun (5); Li, Xuelong (6)

Author affiliation:(1) School of Computer Science and Technology, Shandong University, Jinan; 250100, China; (2) Department of Electric Engineering and Information System, Hefei University of Technology, Hefei; 230009, China; (3) Jt. NTU-Univ. of British Columbia Research Center of Excellence in Active Living for the Elderly, Nanyang Technological University, Singapore; 639798, Singapore; (4) School of Computing, National University of Singapore, Singapore; 119077, Singapore; (5) Centre for Quantum Computation and Intelligent Systems, University of Technology Sydney, Sydney; NSW; 2007, Australia; (6) 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

Source title:IEEE Transactions on Neural Networks and Learning Systems

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

Volume:28

Issue:7

Issue date:July 2017

Publication year:2017

Pages:1508-1519

Article number:7419264

Language:English

ISSN:2162237X

E-ISSN:21622388

Document type:Journal article (JA)

Publisher:Institute of Electrical and Electronics Engineers Inc.

Abstract:Understanding the progression of chronic diseases can empower the sufferers in taking proactive care. To predict the disease status in the future time points, various machine learning approaches have been proposed. However, a few of them jointly consider the dual heterogeneities of chronic disease progression. In particular, the predicting task at each time point has features from multiple sources, and multiple tasks are related to each other in chronological order. To tackle this problem, we propose a novel and unified scheme to coregularize the prior knowledge of source consistency and temporal smoothness. We theoretically prove that our proposed model is a linear model. Before training our model, we adopt the matrix factorization approach to address the data missing problem. Extensive evaluations on real-world Alzheimer's disease data set have demonstrated the effectiveness and efficiency of our model. It is worth mentioning that our model is generally applicable to a rich range of chronic diseases. © 2012 IEEE.

Number of references:45

Main heading:Neurodegenerative diseases

Controlled terms:Factorization - Forecasting - Learning systems

Uncontrolled terms:Alzheimer's disease - Disease progression - Effectiveness and efficiencies - Machine learning approaches - Matrix factorizations - Multisources - source consistency - Temporal regularization

Classification code:461.6 Medicine and Pharmacology - 921 Mathematics

DOI:10.1109/TNNLS.2016.2520964

Funding details: Number: 61572169, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;

Funding text:National Natural Science Foundation of China under Grant 61572169.

Database:Compendex

Accession number:20172403755708

Title:Dispersion management of a compact all fiber Yb doped NPE passive mode-locked oscillator by a tapered fiber

Authors:Yang, Peilong (1, 2); Hu, Zhongqi (1, 2); Teng, Hao (2); Lv, Zhiguo (3); Wei, Zhiyi (2)

Author affiliation:(1) School of Physics and Optoelectronic Engineering, Xidian University, Xi'an; 710071, China; (2) Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing; 100190, China; (3) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, xi'an; 710119, China

Corresponding author:Wei, Zhiyi(zywei@iphy.ac.cn)

Source title:Optics InfoBase Conference Papers

Abbreviated source title:Opt. InfoBase Conf. Pap

Volume:Part F41-CLEO_SI 2017

Part number:1 of 1

Issue title:CLEO: Science and Innovations, CLEO_SI 2017

Issue date:2017

Publication year:2017

Language:English

ISBN-13:9781557528209

Document type:Conference article (CA)

Conference name:CLEO: Science and Innovations, CLEO_SI 2017

Conference date:May 14, 2017 - May 19, 2017

Conference location:San Jose, CA, United states

Conference code:135888

Publisher:OSA - The Optical Society

Abstract:We explored dispersion management of a NPE mode-locked Yb-doped all fiber oscillator by a tapered fiber, the compressed pulse duration of 116fs, power of 36mW , spectrum is widened to near 20nm. © 2017 OSA.

Number of references:4

Page count:2

Main heading:Fibers

Controlled terms:Locks (fasteners)

Uncontrolled terms:All fiber - Compressed pulse - Dispersion management - Mode-locked - Passive mode-locked - Tapered fiber - Yb-doped

Classification code:547.2 Rare Earth Metals

Numerical data indexing:Power 3.60e-02W, Size 2.00e-08m, Time 1.16e-13s

DOI:10.1364/CLEO_SI.2017.SM4L.8

Database:Compendex

Accession number:20174504379313

Title:Influence of test equipment pose error on dividing error measurement based on autocollimator

Authors:Tian, Liu-De (1, 2); Zhao, Jian-Ke (1); Wang, Tao (1); Zhao, Huai-Xue (1); Duan, Ya-Xuan (1, 2); Liu, Zhao-Hui (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:Tian, Liu-De(tianliude@126.com)

Source title:Guangxue Jingmi Gongcheng/Optics and Precision Engineering

Abbreviated source title:Guangxue Jingmi Gongcheng

Volume:25

Issue:9

Issue date:September 1, 2017

Publication year:2017

Pages:2267-2276

Language:Chinese

ISSN:1004924X

CODEN:GJGOF4

Document type:Journal article (JA)

Publisher:Chinese Academy of Sciences

Abstract:In order to improve the measurement accuracy of dividing error of encoders, the principle and method to measure dividing error by using angular polygon and autocollimator were introduced, and the error sources were analyzed. According to the measurement principle, coordinate systems of angular polygon and autocollimator were established. Utilizing the method of coordinate transformation, precise mathematical models were deduced for indicating the relationships between dividing error and misalignment errors, such as parallelism error between the angular polygon working surface and the axis of the tested unit, perpendicularity error between autocollimator optical axis and the working surface of angular polygon, parallelism error between vertical wire of the autocollimator and the axis of the tested unit. In order to verify the error models of misadjustment, three experiments were performed in the laboratory, taking the positioning error of a single-axis position turntable as test object. The experimental and theoretical results have good consistency and the maximum deviation was less than 0.9″, which indicate that the error models of misadjustment are applicable to guide dividing error measurement. © 2017, Science Press. All right reserved.

Number of references:21

Main heading:Geometry

Controlled terms:Equipment testing - Error analysis - Mathematical transformations

Uncontrolled terms:Angular polygon - Autocollimators - Co-ordinate system - Co-ordinate transformation - Coodinate transformation - Error measurements - Measurement accuracy - Misalignment errors

Classification code:921 Mathematics - 921.3 Mathematical Transformations

DOI:10.3788/OPE.20172509.2267

Database:Compendex

Accession number:20163702783562

Title:Femtosecond passively Er-doped mode-locked fiber laser with WS<inf>2</inf>solution saturable absorber

Authors:Li, Lu (1, 2); Su, Yulong (1); Wang, Yonggang (1); Wang, Xi (1); Wang, Yishan (1, 3); Li, Xiaohui (3); Mao, Dong (4); Si, Jinhai (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) Key Laboratory for Physical Electronics and Devices of the Ministry of Education, School of Electronic and Information Engineering, Xi'an Jiaotong University, Xi'an; 710049, China; (3) School of Physics and information Technology, Shaanxi Normal University, Xi'an; 710119, China; (4) Shaanxi Key Laboratory of Optical Information Technology, School of Science, Northwestern Polytechnical University, Xi'an; 710072, China

Corresponding author:Li, Lu(lilu@opt.cn)

Source title:IEEE Journal of Selected Topics in Quantum Electronics

Abbreviated source title:IEEE J Sel Top Quantum Electron

Volume:23

Issue:1

Issue date:January-February 2017

Publication year:2017

Article number:7426731

Language:English

ISSN:07921233

E-ISSN:21910359

CODEN:IJSQEN

Document type:Journal article (JA)

Publisher:Institute of Electrical and Electronics Engineers Inc.

Abstract:This study presents the femtosecond fundamental and harmonic mode-locked Er-doped fiber laser with WS<inf>2</inf>solution saturable absorber (SSA). The SA is fabricated based on a D-shaped fiber (DF) embedded in WS<inf>2</inf>nanosheets solution. Such WS<inf>2</inf>solution has virtues of good antioxidant capacity, excellent scattering resistance, high heat dissipation, and high damage threshold. This kind of SA shows a modulation depth of 11%, a saturable intensity I<inf>sat</inf>of 5 MW/cm2, and nonsaturable loss of 18%. By employing DF-WS<inf>2</inf>SSA, a stable mode-locked fiber laser is achieved with repetition rate of 10.2 MHz and pulse duration of 660 fs. At the pump power of 350 mW, 460.7-MHz repetition rate harmonic mode-locking (HML) operation is also obtained, which corresponds to 45th harmonics of the fundamental cavity repetition rate. The pulse duration is 710 fs and signal-to-noise ratio is 66 dB, showing the excellent performance in HML fiber laser with SA. The results indicate that DF-WS<inf>2</inf>solution can work as a potential SA for ultrafast nonlinear optics. © 1995-2012 IEEE.

Number of references:52

Main heading:Mode-locked fiber lasers

Controlled terms:Erbium compounds - Fiber lasers - Fibers - Harmonic analysis - Heat resistance - Locks (fasteners) - Nonlinear optics - Optical materials - Pulse repetition rate - Saturable absorbers - Signal to noise ratio - Tungsten compounds

Uncontrolled terms:Antioxidant capacity - Damage threshold - Er-doped fiber laser - Harmonic mode locking - Modulation depth - Non-linear optical material - Non-saturable loss - Ultrafast nonlinear optics

Classification code:716.1 Information Theory and Signal Processing - 741.1.1 Nonlinear Optics - 741.3 Optical Devices and Systems - 744.1 Lasers, General - 744.4 Solid State Lasers - 921.6 Numerical Methods

Numerical data indexing:Decibel 6.60e+01dB, Frequency 1.02e+07Hz, Frequency 4.61e+08Hz, Percentage 1.10e+01%, Percentage 1.80e+01%, Power 3.50e-01W, Surface_Power_Density 5.00e+10W/m2, Time 6.60e-13s, Time 7.10e-13s

DOI:10.1109/JSTQE.2016.2538640

Funding details: Number: SKLST201401, Acronym: CAAS, Sponsor: Chinese Academy of Agricultural Sciences;Number: 61378024, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;

Funding text:This work was supported in part by the National Natural Science Foundation of China under Grant 61378024, and the Open Research Fund of the State Key Laboratory of Transient Optics and Photonics, Chinese Academy of Science under Grant SKLST201401.

Database:Compendex

Accession number:20175104560097

Title:Effects of Spatial Electrons on Signal-Noise-Ratio of a X-ray Communication System

Authors:Li, Yao (1, 2); Su, Tong (1, 2); Sheng, Li-Zhi (1); Qiang, Peng-Fei (1, 2); Xu, Neng (1, 2, 3); Li, Lin-Sen (1, 2, 4); Zhao, Bao-Sheng (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (2) University of Chinese Academy of Sciences, Beijing; 100049, China; (3) School of Electronics and Information Engineering, Xi'an Jiaotong University, Xi'an; 710049, China; (4) School of Sciences, Xi'an Jiaotong University, Xi'an; 710049, China

Corresponding author:Qiang, Peng-Fei(qiangpengfei@opt.ac.cn)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:46

Issue:11

Issue date:November 1, 2017

Publication year:2017

Article number:1106002

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:A model of electron interacting with nested X-ray focusing optics was designed firstly. Then the process of electrons interacting with coating material of X-ray focusing optics and the quantum efficiency of X-ray source by using a Monte Carlo N Particle transport code was analysized. Simulation results accord well with the analyze results. Finally, a silicon drift detector, which has an energy resolution of 125 eV was used to analysis the energy spectrum in the focal point. In the detecting part, X-ray photons are composed of two parts, signal photons generated by the X-ray source and noisy X-ray photons generated from nested X-ray focusing optics' coating material. According to different conditions of X-ray source and electron gun voltage, the number of signal photon, noisy photon and signal to noise ratio of the X-ray communication demonstration system then can be calculated. Experiment and calculate results show that nested X-ray focusing optics can effectively filter spatial particles, which will optimize the signal to noise ratio of X-ray communication system. When the number of incident electrons is about 1×108counts per second with an energy distribution from 1~20 keV, signal to noise ratio of the X-ray communication demonstration system can reach at least 15.1 dB. These results will provide foundations for optimizing the core parameters of X-ray communication system in the future. © 2017, Science Press. All right reserved.

Number of references:22

Main heading:X rays

Controlled terms:Coatings - Electron guns - Electron sources - Electrons - Focusing - Light - Photons - Plating - Quantum chemistry - Signal to noise ratio - X ray apparatus

Uncontrolled terms:Energy distributions - Energy resolutions - Fluoresycence - Focusing optics - Incident electrons - Monte carlo n particles - Silicon Drift Detector - X-ray focusing optics

Classification code:539.3 Metal Plating - 714.1 Electron Tubes - 716.1 Information Theory and Signal Processing - 741.1 Light/Optics - 801.4 Physical Chemistry - 813.2 Coating Materials - 931.3 Atomic and Molecular Physics - 932.1 High Energy Physics

Numerical data indexing:Decibel 1.51e+01dB, Electron_Volt 1.00e+03eV to 2.00e+04eV, Electron_Volt 1.25e+02eV

DOI:10.3788/gzxb20174611.1106002

Funding details: Number: 61471357, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;

Funding text:The National Natural Science Foundation of China (No. 61471357) and the Western Light Research Program of the Chinese Academy of Sciences.

Database:Compendex

Accession number:20181304958855

Title:Simultaneous, real-time, chromatic polarimetric imaging technology with full-polarization-state detection

Authors:Ju, Hai-Juan (1, 2); Liang, Jian (1, 2); Zhang, Wen-Fei (1, 2); Bai, Zhao-Feng (1); Ren, Li-Yong (1); Qu, En-Shi (1)

Author affiliation:(1) Department of Information 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

Source title:Hongwai Yu Haomibo Xuebao/Journal of Infrared and Millimeter Waves

Abbreviated source title:Hongwai Yu Haomibo Xuebao

Volume:36

Issue:6

Issue date:December 1, 2017

Publication year:2017

Pages:744-748

Language:Chinese

ISSN:10019014

CODEN:HHXUEZ

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:As a new kind of optical imaging technology, polarimetric imaging can efficiently increase the detection dimension of the information by detecting the polarization properties of the optical wave. This is useful for obtaining the target information comprehensively and accurately. Firstly, the method of polarization imaging detecting was introduced and the typical polarization imaging systems are reviewed in this paper. Then, based on Stokes Vector, a simultaneous, real-time, division of aperture chromatic polarimetric imaging camera with full-polarization-state detection was introduced in detail. Finally, the experimental results of full polarimetric imaging and polarimetric dehazing imaging using this camera were demonstrated. The experimental results indicate that the polarimetric imaging technology of full polarization states simultaneous detecting has obvious advantages on developing the detecting distance and acquiring the detail features, so it can provide important supplement for modern optical imaging system. © 2017, Science Press. All right reserved.

Number of references:24

Main heading:Polarization

Controlled terms:Cameras - Demulsification - Imaging systems - Optical image storage - Polarimeters

Uncontrolled terms:Division of aperture - Full polarization state - Optical imaging system - Optical imaging technology - Polarimetric imaging - Polarization imaging - Polarization properties - Simultaneous detection

Classification code:722.1 Data Storage, Equipment and Techniques - 742.2 Photographic Equipment - 746 Imaging Techniques - 802.3 Chemical Operations - 941.3 Optical Instruments

DOI:10.11972/j.issn.1001-9014.2017.06.018

Funding details: Number: 61275149, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61505246, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61535015, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;

Funding text:Foundation items: Supported by National Natural Science Foundation of China(61505246, 61535015, 61275149).

Database:Compendex

Accession number:20171703607634

Title:Ultra-short wavelength operation in Thulium-doped silica fiber laser with bidirectional pumping

Authors:Xiao, Xusheng (1, 2); Guo, Haitao (1); Yan, Zhijun (1); Wang, Hushan (1); Xu, Yantao (1); Lu, Min (1); Wang, Yishan (1); Peng, Bo (1)

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

Corresponding author:Guo, Haitao

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

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:10256

Part number:1 of 1

Issue title:Second International Conference on Photonics and Optical Engineering

Issue date:2017

Publication year:2017

Article number:102561F

Language:English

ISSN:0277786X

E-ISSN:1996756X

CODEN:PSISDG

Document type:Conference article (CA)

Conference name:2nd International Conference on Photonics and Optical Engineering

Conference date:October 14, 2016

Conference location:Xi'an, China

Conference code:127345

Publisher:SPIE

Abstract:An ultra-short wavelength operation of Tm-doped all fiber laser based on fiber Bragg gratings (FBGs) was developed. A bi-directional pump configuration for the ultra-short wavelength operation was designed and investigated for the first time. the laser yielded 3.15W of continuous-wave output at 1706.75nm with a narrow-linewidth of &sim;50pm and a maximum slope efficiency of 42.1%. The dependencies of the slope efficiencies and pump threshold of the laser versus the length of active fiber and reflectivity of the output mirror (FBG) were investigated in detail. An experimental comparative study between two Thulium-doped fiber lasers (TDFLs) with two different pumping configuration(forward unidirectional pumping and bidirectional pumping) was presented. It is indisputable that the development of 1.7μm silicate fiber lasers with Watt-level output power open up a number of heart-stirring and tempting application windows. © 2017 SPIE.

Number of references:20

Main heading:Pumping (laser)

Controlled terms:Efficiency - Fiber Bragg gratings - Fiber lasers - Fibers - Laser mirrors - Photonics - Silica - Silicates - Thulium

Uncontrolled terms:Bidirectional pumping - Comparative studies - Fiber Bragg gratings (FBGs) - Pump configuration - Pumping configurations - Short wavelengths - Slope efficiencies - Thulium-doped fibers

Classification code:547.2 Rare Earth Metals - 741.1 Light/Optics - 744 Lasers - 913.1 Production Engineering

Numerical data indexing:Power 3.15e+00W, Size 1.70e-06m, Size 1.71e-06m, Percentage 4.21e+01%

DOI:10.1117/12.2256818

Database:Compendex

Accession number:20172103685887

Title:Thermal characteristics of compact conduction-cooled high power diode laser array packages

Authors:Zhang, Pu (1); Liu, Xingsheng (1, 2); Zhu, Qiwen (1); Wang, Jingwei (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 Hi-Tech Industrial Development Zone, No. 17 Xinxi Road, New Industrial Park, Xi'an, Shaanxi; 710119, China; (2) Focuslight Technologies Co., LTD, Xi'an Hi-Tech Industrial Development Zone, No. 60 Xibu Road, New Industrial Park, 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:10085

Part number:1 of 1

Issue title:Components and Packaging for Laser Systems III 2017

Issue date:2017

Publication year:2017

Article number:100850A

Language:English

ISSN:0277786X

E-ISSN:1996756X

CODEN:PSISDG

ISBN-13:9781510606111

Document type:Conference article (CA)

Conference name:Components and Packaging for Laser Systems III 2017

Conference date:January 31, 2017 - February 2, 2017

Conference location:San Francisco, CA, United states

Conference code:127684

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

Publisher:SPIE

Abstract:Thermal management is one of the most important factors affecting the performance of high power diode lasers. In this paper, transient thermal behavior of conduction-cooled high power diode lasers has been studied using finite element method. The effects of heat sink geometry, ceramics size on the junction temperature of high power diode laser packages have been analyzed. Based on the simulations, heat dissipation capability of high power diode laser packages is improved and compact conduction-cooled diode laser array packages with 3 bars and 5 bars are fabricated. The power &sim; current and spectrum of the optimized high power diode laser array packages at different operation parameters are characterized at different pulse widths, repetition frequencies and TEC temperatures. The effects of temperature on the output power and spectrum are discussed. The lifetime test of high power diode laser array packages is also performed. It shows that the conduction-cooled high power diode laser array packages have good optical performance. © 2017 SPIE.

Number of references:11

Main heading:Semiconductor lasers

Controlled terms:Diodes - Finite element method - Laser beam welding - Packaging - Power semiconductor diodes - Temperature

Uncontrolled terms:Conduction cooled - Effects of temperature - Heat dissipation capability - High power diode laser - High-power diode laser arrays - Junction temperatures - Thermal characteristics - Thermal optimization

Classification code:641.1 Thermodynamics - 694.1 Packaging, General - 744.4.1 Semiconductor Lasers - 744.9 Laser Applications - 921.6 Numerical Methods

DOI:10.1117/12.2250258

Database:Compendex

Accession number:20171703607655

Title:The cooling control system for focal plane assembly of astronomical satellite camera based on TEC

Authors:Yuqing, He (1, 2); Yunfei, Du (1); Wei, Gao (1); Baopeng, Li (1); Xuewu, Fan (1); Wengang, Yang (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:Proceedings of SPIE - The International Society for Optical Engineering

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:10256

Part number:1 of 1

Issue title:Second International Conference on Photonics and Optical Engineering

Issue date:2017

Publication year:2017

Article number:102562H

Language:English

ISSN:0277786X

E-ISSN:1996756X

CODEN:PSISDG

Document type:Conference article (CA)

Conference name:2nd International Conference on Photonics and Optical Engineering

Conference date:October 14, 2016

Conference location:Xi'an, China

Conference code:127345

Publisher:SPIE

Abstract:The dark current noise existing in the CCD of the astronomical observation camera has a serious influence on its working performance, reducing the working temperature of CCD can suppress the influence of dark current effectively. By analyzing the relationship between the CCD chip and the dark current noise, the optimum working temperature of the red band CCD focal plane is identified as -75°C. According to the refrigeration temperature, a cooling control system for focal plane based on a thermoelectric cooler (TEC) was designed. It is required that the system can achieve high precision temperature control for the target. In the cooling control system, the 80C32 microcontroller was used as its systematic core processor. The advanced PID control algorithm is adopted to control the temperature of the top end of TEC. The bottom end of the TEC setting a constant value according to the target temperature used to assist the upper TEC to control the temperature. The experimental results show that the cooling system satisfies the requirements of the focal plane for the astronomical observation camera, it can reach the working temperature of -75°C and the accuracy of ±2°C. © 2017 SPIE.

Number of references:12

Main heading:Thermal management (electronics)

Controlled terms:Cameras - Charge coupled devices - Cooling - Cooling systems - Dark currents - Flight control systems - Focusing - Photonics - Temperature control - Thermoelectric equipment - Three term control systems

Uncontrolled terms:Astronomical observation - Dark current noise - Focal plane assemblies - Refrigeration temperatures - Target temperature - Thermoelectric cooler - Working performance - Working temperatures

Classification code:615.4 Thermoelectric Energy - 641.2 Heat Transfer - 711.2 Electromagnetic Waves in Relation to Various Structures - 714.2 Semiconductor Devices and Integrated Circuits - 731.1 Control Systems - 731.3 Specific Variables Control - 741.1 Light/Optics - 742.2 Photographic Equipment

Numerical data indexing:Temperature 1.98e+02K

DOI:10.1117/12.2257422

Database:Compendex

Accession number:20170803359894

Title:Latent semantic concept regularized model for blind image deconvolution

Authors:Ye, Renzhen (1, 2); Li, Xuelong (1)

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

Corresponding author:Ye, Renzhen(yerenzhen@gmail.com)

Source title:Neurocomputing

Abbreviated source title:Neurocomputing

Volume:257

Issue date:September 27, 2017

Publication year:2017

Pages:206-213

Language:English

ISSN:09252312

E-ISSN:18728286

CODEN:NRCGEO

Document type:Journal article (JA)

Publisher:Elsevier B.V.

Abstract:Blind image deconvolution refers to the recovery of a sharp image when the degradation processing is unknown. Many existing methods have the problem that they are designed to exploit low level image descriptors (e.g. image pixels or image gradient) only, rather than high-level latent semantic concepts, thus there is no guarantee of human visual perception. To address this problem, in this paper, a latent semantic concept regularized (LSCR) method is proposed to reduce the blind deconvolution problem at a semantic level. The proposed method explores the relationship between different image descriptors and exploits sparse measure to favor sharp images over blurry images. And matrix factorization is introduced to learn the latent concepts from the image descriptors. Then, the image prior can be described and constrained by the learned latent semantic concepts of image descriptors using a much more effective convolution matrix. In this case, the blind deconvolution problem can be regularized and the sharp version of the blurry image can be recovered at a new latent semantic level. Furthermore, an iterative algorithm is exploited to derive optimal solution. The proposed model is evaluated on two different datasets, including simulation dataset and real dataset, and state-of-the-art performance is achieved compared with other methods. © 2017 Elsevier B.V.

Number of references:58

Main heading:Iterative methods

Controlled terms:Convolution - Factorization - Learning systems - Matrix algebra

Uncontrolled terms:Blind deconvolution - Blind image deconvolution - Degradation processing - Human visual perception - Latent semantics - Manifold regularized - Matrix factorizations - State-of-the-art performance

Classification code:716.1 Information Theory and Signal Processing - 921 Mathematics

DOI:10.1016/j.neucom.2016.11.064

Database:Compendex

Accession number:20164603021588

Title:Adaptive synchronization of delayed reaction-diffusion neural networks with unknown non-identical time-varying coupling strengths

Authors:Li, Junmin (1); He, Chao (1); Zhang, Weiyuan (2); Chen, Minglai (1, 3)

Author affiliation:(1) School of Mathematics and Statistics, Xidian University, Xi'an; 710071, China; (2) Institute of Nonlinear Science, Xianyang Normal University, Xianyang; 712000, China; (3) Xi'an Institute of Optics and Precision Mechanics of CAS, Xi'an; 710119, China

Corresponding author:Li, Junmin(jmli@mail.xidian.edu.cn)

Source title:Neurocomputing

Abbreviated source title:Neurocomputing

Volume:219

Issue date:January 5, 2017

Publication year:2017

Pages:144-153

Language:English

ISSN:09252312

E-ISSN:18728286

CODEN:NRCGEO

Document type:Journal article (JA)

Publisher:Elsevier B.V.

Abstract:This paper concerns the asymptotic synchronization of delayed reaction-diffusion neural networks (RDNNs) with unknown nonidentical time-varying coupling strengths, where the time-varying coupling strengths are consist of continuous time-varying periodic parameters and time-invariant nonnegative parameters. By utilizing a novel adaptive approach, the differential-difference type adaptive laws of coupling strengths and adaptive controller are designed such that the nonidentical RDNNs are asymptotic synchronization. The sufficient conditions dependent on the reaction-diffusion terms are derived by constructing a novel Lyapunov-Krasovskii-like composite energy functional (CEF) and using Barbalat's lemma. Finally, a simulation example is provided to illustrate the effectiveness of the developed approach. © 2016 Elsevier B.V.

Number of references:43

Main heading:Time varying networks

Controlled terms:Continuous time systems - Diffusion in liquids - Synchronization

Uncontrolled terms:Adaptive - Asymptotic synchronization - Composite energy - Reaction-diffusion neural networks - Time-varying coupling strengths

Classification code:703.1 Electric Networks - 961 Systems Science

DOI:10.1016/j.neucom.2016.09.006

Database:Compendex

Accession number:20182305271468

Title:CCD imagers MTF enhanced filter design

Authors:Jian, Zhang (1, 2); Yangyu, Fan (1); Zhe, Xu (2)

Author affiliation:(1) Institute of Information, Northwest Polytechnical University, Xi'an, China; (2) Space Optics Lab, Xi'An Institute of Optics and Precision Mechanics of CAS, Xi'an, China

Source title:International Conference on Communication Technology Proceedings, ICCT

Abbreviated source title:Int. Conf. Commun. Technol. Proc. ICCT

Volume:2017-October

Part number:1 of 1

Issue title:2017 17th IEEE International Conference on Communication Technology, ICCT 2017

Issue date:July 2, 2017

Publication year:2017

Pages:1720-1724

Language:English

ISBN-13:9781509039432

Document type:Conference article (CA)

Conference name:17th IEEE International Conference on Communication Technology, ICCT 2017

Conference date:October 27, 2017 - October 30, 2017

Conference location:Chengdu, China

Conference code:136565

Sponsor:IEEE; SIE

Publisher:Institute of Electrical and Electronics Engineers Inc.

Abstract:In order to improve the imaging quality of the optical imagers, the modulation transfer function enhanced CCD signal filter circuit is designed. Firstly, the imager MTF transfer chain is discussed, and the impact to MTF causing by each part of imaging chain is introduced. Secondly, from frequency domain and time domain respectively the MTF enhanced filter principle and implementation method are analyzed, the filter minimum bandwidth is confirmed. By comparing the step response of the filter and the response of the camera to the Nyquist spatial frequency fringe imaging in simulation experiment, the optimum quality factor of the MTF enhancement filter is determined. Lastly, the camera MTF test was carried out using black and white stripe target, and the SNR of the camera was measured by integrating sphere. The test results show that MTF enhanced filter can improve the system MTF 30% when the quality factor is 1, and the noise suppression capability is comparable to that of the maximally flat filter in the pass-band. MTF enhancement filter can effectively improve the imaging performance of CCD camera. © 2017 IEEE.

Number of references:17

Main heading:Image enhancement

Controlled terms:Bandpass filters - Butterworth filters - CCD cameras - Chains - Frequency domain analysis - Low pass filters - Modulation - Optical transfer function - Signal to noise ratio - Time domain analysis - Transfer functions

Uncontrolled terms:Frequency domains - Imaging performance - Integrating spheres - Maximally flat filters - Modulation transfer function (MTF) - Quality factors - Signal-noise ratio - Spatial frequency

Classification code:602.1 Mechanical Drives - 703.2 Electric Filters - 714.2 Semiconductor Devices and Integrated Circuits - 716.1 Information Theory and Signal Processing - 741.1 Light/Optics - 921 Mathematics - 921.3 Mathematical Transformations

Numerical data indexing:Percentage 3.00e+01%

DOI:10.1109/ICCT.2017.8359924

Database:Compendex

Accession number:20171503568129

Title:Efficient modulation of orthogonally polarized infrared light using graphene metamaterials

Authors:Cui, Yudong (1, 2); Zeng, Chao (2)

Corresponding author:Zeng, Chao(zengchao@opt.cn)

Source title:Journal of Applied Physics

Abbreviated source title:J Appl Phys

Volume:121

Issue:14

Issue date:April 14, 2017

Publication year:2017

Article number:143102

Language:English

ISSN:00218979

E-ISSN:10897550

CODEN:JAPIAU

Document type:Journal article (JA)

Publisher:American Institute of Physics Inc.

Abstract:We propose an efficient modulation of linearly polarized infrared light using graphene metamaterials (GMMs) by exploiting the phase-coupled plasmon-induced transparency (PIT) mechanism. Because of the phase-coupling effect in GMMs, pronounced PIT peaks can be simultaneously obtained for the orthogonally polarized light through tuning of the Fermi level in graphene. Taking advantage of such polarization-selective PIT spectral responses and precise phase management, a dual-polarization GMM modulator is successfully achieved with ultra-high modulation depths of &sim;32 dB at 10 μm and &sim;28 dB at 12.45 μm for the x- and y-polarized light beams, respectively. The underlying principle of the proposal is well explained and verified by using transfer matrix method. The proposed scheme provides new opportunities for developing graphene-integrated high-performance electro-optical modulation, switching, and other optoelectronics applications. © 2017 Author(s).

Number of references:31

Main heading:Transfer matrix method

Controlled terms:Graphene - Light polarization - Metamaterials - Modulation

Uncontrolled terms:Dual-polarizations - Electro-optical modulation - Induced transparency - Linearly polarized - Modulation depth - Polarized light beams - Spectral response - Underlying principles

Classification code:741.1 Light/Optics - 761 Nanotechnology - 804 Chemical Products Generally - 921 Mathematics - 951 Materials Science

Numerical data indexing:Size 1.00e-05m, Size 1.24e-05m

DOI:10.1063/1.4980029

Funding details: Number: 2015KCT-06, Acronym: -, Sponsor: -;Number: 61525505, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;

Funding text:This work was supported by the National Natural Science Foundation of China under Grant Agreement No. 61525505 and by the Key Scientific and Technological Innovation Team Project in Shaanxi Province (2015KCT-06).

Database:Compendex

Accession number:20173804172573

Title:Modeling Information Diffusion over Social Networks for Temporal Dynamic Prediction

Authors:Li, Dong (1, 2); Zhang, Shengping (3); Sun, Xin (3); Zhou, Huiyu (4); Li, Sheng (5); Li, Xuelong (6)

Author affiliation:(1) School of Electrical and Information Engineering, Shandong University, Weihai; 264209, China; (2) Harbin Institute of Technology, Harbin; 150001, China; (3) School of Computer Science and Technology, Harbin Institute of Technology, Weihai; 264200, China; (4) Centre for Secure Information Technologies (CSIT), Queen's University Belfast, Belfast; BT7 1NN, United Kingdom; (5) School of Computer Science and Technology, Harbin Institute of Technology, Harbin; 150001, China; (6) 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:Zhang, Shengping(s.zhang@hit.edu.cn)

Source title:IEEE Transactions on Knowledge and Data Engineering

Abbreviated source title:IEEE Trans Knowl Data Eng

Volume:29

Issue:9

Issue date:September 1, 2017

Publication year:2017

Pages:1985-1997

Article number:7921565

Language:English

ISSN:10414347

CODEN:ITKEEH

Document type:Journal article (JA)

Publisher:IEEE Computer Society

Abstract:Modeling the process of information diffusion is a challenging problem. Although numerous attempts have been made in order to solve this problem, very few studies are actually able to simulate and predict temporal dynamics of the diffusion process. In this paper, we propose a novel information diffusion model, namely GT model, which treats the nodes of a network as intelligent and rational agents and then calculates their corresponding payoffs, given different choices to make strategic decisions. By introducing time-related payoffs based on the diffusion data, the proposed GT model can be used to predict whether or not the user's behaviors will occur in a specific time interval. The user's payoff can be divided into two parts: social payoff from the user's social contacts and preference payoff from the user's idiosyncratic preference. We here exploit the global influence of the user and the social influence between any two users to accurately calculate the social payoff. In addition, we develop a new method of presenting social influence that can fully capture the temporal dynamics of social influence. Experimental results from two different datasets, Sina Weibo and Flickr demonstrate the rationality and effectiveness of the proposed prediction method with different evaluation metrics. © 1989-2012 IEEE.

Number of references:43

Main heading:Economic and social effects

Controlled terms:Behavioral research - Forecasting - Models - Social networking (online)

Uncontrolled terms:Diffusion process - Evaluation metrics - Information diffusion - Model informations - Novel information - Prediction methods - Strategic decisions - Temporal dynamics

Classification code:723 Computer Software, Data Handling and Applications - 971 Social Sciences

DOI:10.1109/TKDE.2017.2702162

Funding details: Number: 2015ZDXX0201B02, Acronym: -, Sponsor: Department of Science and Technology of Shandong Province;Number: -, Acronym: -, Sponsor: Natural Science Foundation of Shandong Province;Number: EP/N508664/1, Acronym: -, Sponsor: Engineering and Physical Sciences Research Council;Number: 2016M600250, Acronym: -, Sponsor: China Postdoctoral Science Foundation;Number: ALGA4131016116, Acronym: -, Sponsor: Society of Hong Kong Scholars;Number: 61761130079, Acronym: -, Sponsor: National Natural Science Foundation of China;Number: 61602128, Acronym: -, Sponsor: National Natural Science Foundation of China;Number: NA160342, Acronym: -, Sponsor: -;

Funding text:D. Li was supported in part by the Hong Kong Scholar Foundation of China (No. ALGA4131016116), the China Postdoctoral Foundation (No. 2016M600250), and the Major Science and Technology Foundation of Shandong Province (No. 2015ZDXX0201B02). S. Zhang was supported in part by the Natural Science Foundation of China (No. 61672188). X. Sun was supported in part by the Natural Science Foundation of China (No. 61602128) and the Natural Science Foundation of Shandong Province (No. ZR2016FQ13). H. Zhou was supported in part by UK EPSRC under Grants EP/N508664/1 and EP/N011074/1, and Royal Society-Newton Advanced Fellowship under Grant NA160342. X. Li was supported in part by the National Natural Science Foundation of China (Grant No. 61761130079).

Database:Compendex

Accession number:20174304313456

Title:Temperature-calibrated high-precision refractometer using a tilted fiber Bragg grating

Authors:Jiang, Biqiang (1, 2); Zhou, Kaiming (2, 3); Wang, Changle (2); Zhao, Yunhe (2); Zhao, Jianlin (1); Zhang, Lin (2)

Author affiliation:(1) MOE Key Laboratory of Material Physics and Chemistry under Extraordinary Conditions, 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:Jiang, Biqiang(bqjiang@nwpu.edu.cn)

Source title:Optics Express

Abbreviated source title:Opt. Express

Volume:25

Issue:21

Issue date:October 16, 2017

Publication year:2017

Pages:25910-25918

Language:English

E-ISSN:10944087

Document type:Journal article (JA)

Publisher:OSA - The Optical Society

Abstract:We present a refractometer with main- and vernier-scale to measure the refractive index (RI) of liquids with high precision by using the fine spectrum structure of a tilted fiber Bragg grating (TFBG). The absolute RI values are determined by the accurate wavelength of cut-off mode resonances. The main- and vernier-scale are calibrated by measuring large groups of fine spectra at different cut-off mode resonances in a small RI range, and the use of vernier-scale certainly reduces the RI measurement uncertainty resulted from the discrete cladding mode resonances. The performance of the TFBG-based vernier refractometer is experimentally verified by exploring the temperature dependence of RI of anhydrous ethanol in a near infrared region, showing an enhanced accuracy to the order of 10−4, high repeatability and temperature self-calibration capability. © 2017 Optical Society of America.

Number of references:25

Main heading:Refractometers

Controlled terms:Fiber Bragg gratings - Infrared devices - Refractive index - Resonance - Temperature distribution - Uncertainty analysis

Uncontrolled terms:Anhydrous ethanol - Cladding mode resonances - Measurement uncertainty - Near infrared region - Self calibration - Spectrum structure - Temperature dependence - Tilted fiber Bragg grating

Classification code:641.1 Thermodynamics - 741.1 Light/Optics - 922.1 Probability Theory - 931.1 Mechanics - 941.3 Optical Instruments

DOI:10.1364/OE.25.025910

Funding details: Number: 61505165, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 660648, Acronym: H2020, Sponsor: Horizon 2020 Framework Programme;

Funding text:Marie Sk？odowska-Curie Individual Fellowships in the European Union’s Horizon 2020 Research and Innovation Programme (660648); National Natural Science Foundation of China (61505165); Natural Science Basic Research Plan in Shaanxi Province of China (2016JQ6032).

Database:Compendex

Accession number:20181304944791

Title:Generation of carrier-envelope phase stabilized laser from solid plates and application in high-harmonic generation

Authors:Liu, Yangyang (1); He, Peng (2); Zhao, Kun (1); Huang, Hangdong (2); Jiang, Yujiao (2); Huang, Pei (3); Teng, Hao (1); He, Xinkui (1); Fang, Shaobo (1); Hou, Xun (3); Wei, Zhiyi (1)

Source title:2017 Conference on Lasers and Electro-Optics, CLEO 2017 - Proceedings

Abbreviated source title:Conf. Lasers. Electr.-Opt., Proc.

Volume:2017-January

Part number:1 of 1

Issue title:2017 Conference on Lasers and Electro-Optics, CLEO 2017 - Proceedings

Issue date:October 25, 2017

Publication year:2017

Pages:1-2

Language:English

ISBN-13:9781943580279

Document type:Conference article (CA)

Conference name:2017 Conference on Lasers and Electro-Optics, CLEO 2017

Conference date:May 14, 2017 - May 19, 2017

Conference location:San Jose, CA, United states

Conference code:131854

Sponsor:AdValue Photonics; American Elements - The Materials Science Company; Coherent; et al.; KMLabs - Leading in Ultrafast; MKS

Publisher:Institute of Electrical and Electronics Engineers Inc.

Number of references:8

Main heading:Harmonic generation

Uncontrolled terms:Carrier-envelope phase - High harmonic generation - Octave-spanning spectra - Solid plates - Stabilized lasers

Numerical data indexing:Time 5.40e-15s

DOI:10.1364/CLEO_SI.2017.AF1B.4

Database:Compendex

Accession number:20173804168577

Title:On-chip quantum state generation by means of integrated frequency combs

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

Author affiliation:(1) INRS-EMT, 1650 Boulevard Lionel Boulet, Varennes; QC; J3X1S2, Canada; (2) University of Palermo, Department of Energy, Information Engineering and Mathematical Methods, Palermo; 90128, Italy; (3) School of Engineering, University of Glasgow, Rankine Building, Oakfield Avenue, Glasgow; G12 8LT, United Kingdom; (4) Department of Physics and Astronomy, University of Sussex, Falmer, Brighton; BN1 9RH, United Kingdom; (5) Racah Institute of Physics, Hebrew University of Jerusalem, Jerusalem; 91904, Israel; (6) Xi'an Institute of Optics and Precision Mechanics, CAS, Xi'an, China; (7) Department of Physics and Material Science, City University of Hong Kong, Tat Chee Avenue, Hong Kong, Hong Kong; (8) Centre for Micro Photonics, Swinburne University of Technology, Hawthorn; VIC; 3122, Australia; (9) Institute of Photonics, Department of Physics, University of Strathclyde, Glasgow; G4 0NW, United Kingdom

Source title:Summer Topicals Meeting Series, SUM 2017

Abbreviated source title:Summer Top. Meet. Ser., SUM

Part number:1 of 1

Issue title:Summer Topicals Meeting Series, SUM 2017

Issue date:August 17, 2017

Publication year:2017

Pages:181-182

Article number:8012710

Language:English

ISBN-13:9781509065707

Document type:Conference article (CA)

Conference name:2017 IEEE Photonics Society Summer Topicals Meeting Series, SUM 2017

Conference date:July 10, 2017 - July 12, 2017

Conference location:San Juan, Puerto rico

Conference code:130065

Publisher:Institute of Electrical and Electronics Engineers Inc.

Abstract:Entangled photon-pair sources are key building blocks towards the realization of applications in quantum information processing [1], quantum communications [2], as well as imaging and sensing with resolutions exceeding the classical limit [3]. The generation of, e.g. polarization, time-energy and time-bin entangled photon-pairs has been demonstrated using spontaneous parametric down-conversion (SPDC) in nonlinear second-order media, as well as spontaneous four-wave mixing (SFWM) in third-order nonlinear media. Specifically, nonlinear (third-order) interactions in on-chip microring resonators have been widely used to achieve classical frequency combs [4], mode-lock lasers [5], signal processing [6], etc. Integrated photonics can also find applications for quantum state generation in compact, scalable and efficient devices, required for future optical quantum circuits. In particular, solutions focusing on an integrated (on-chip) approach have been recently investigated and developed, including integrated quantum circuits, sources and detectors [7]. In contrast to waveguides, microring resonators [8] with narrow resonances and high Q-factors, offer an improvement in photon-pair generation efficiency, as well as a narrow photon-pair bandwidth, making them compatible with quantum optical devices (e.g. high temporal-resolution single-photon detectors and quantum memories). Most importantly, in contrast to non-resonant waveguides, where individuals photon-pairs, featured by one signal/idler frequency pair, are generally produced, resonant nonlinear cavities (e.g., microring resonators) allow the generation of correlated photon-pairs on multiple signal/idler frequency channels [9], due to their periodic and equidistant resonance structure. © 2017 IEEE.

Number of references:15

Main heading:Quantum entanglement

Controlled terms:Four wave mixing - Optical frequency conversion - Optical resonators - Particle beams - Photonics - Photons - Q factor measurement - Quantum optics - Signal processing - Waveguides

Uncontrolled terms:Correlated photon pairs - High temporal resolution - Photon pair generations - Quantum state generation - Quantum-information processing - Single-photon detectors - Spontaneous four-wave mixing - Spontaneous parametric down conversion

Classification code:714.3 Waveguides - 716.1 Information Theory and Signal Processing - 741.1.1 Nonlinear Optics - 741.3 Optical Devices and Systems - 931.3 Atomic and Molecular Physics - 931.4 Quantum Theory; Quantum Mechanics - 932.1 High Energy Physics - 942.2 Electric Variables Measurements

DOI:10.1109/PHOSST.2017.8012710

Funding details: Number: -, Acronym: CityU, Sponsor: City University of Hong Kong;Number: -, Acronym: -, Sponsor: Canadian Anesthesiologists' Society;Number: -, Acronym: -, Sponsor: Swinburne University of Technology;Number: -, Acronym: -, Sponsor: University of Strathclyde;Number: -, Acronym: -, Sponsor: University of Glasgow;Number: -, Acronym: -, Sponsor: Hebrew University of Jerusalem;Number: -, Acronym: -, Sponsor: University of Sussex;

Funding text:1INRS-EMT, 1650 Boulevard Lionel Boulet, Varennes, Québec J3X 1S2, Canada 2 University of Palermo-Department of Energy, Information Engineering and Mathematical Methods, Palermo 90128, Italy 3School of Engineering, University of Glasgow, Rankine Building, Oakfield Avenue, Glasgow G12 8LT, Scotland 4Department of Physics and Astronomy, University of Sussex, Falmer, Brighton BN1 9RH, England 5 Racah Institute of Physics, The Hebrew University of Jerusalem, Jerusalem 91904, Israel 6 Xi’an Institute of Optics and Precision Mechanics of CAS, Xi’an, China 7Department of Physics and Material Science, City University of Hong Kong, Tat Chee Avenue, Hong Kong, China 8Centre for Micro Photonics, Swinburne University of Technology, Hawthorn, VIC, 3122 Australia 9Institute of Photonics, Department of Physics, University of Strathclyde, Glasgow G4 0NW, Scotland *michael.kues@emt.inrs.ca, **morandotti@emt.inrs.ca

Database:Compendex

Accession number:20172303739792

Title:Generation of complex quantum states via integrated frequency combs

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

Author affiliation:(1) INRS-EMT, 1650 Boulevard Lionel-Boulet, Varennes; QC; J3X 1S2, Canada; (2) School of Engineering, University of Glasgow, Rankine Building, Oakfield Avenue, Glasgow; G12 8LT, United Kingdom; (3) Department of Physics and Astronomy, University of Sussex, Falmer, Brighton; BN1 9QH, United Kingdom; (4) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Science, Xi'an, China; (5) City University of Hong Kong, Department of Physics and Material Science, Tat Chee Avenue, Hong Kong, Hong Kong; (6) Institute of Photonics, Department of Physics, University of Strathclyde, Glasgow; G4 0NW, United Kingdom; (7) Center for Micro-Photonics, Swinburne University of Technology, Hawthorne; VIC; 3122, Australia; (8) Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu; 610054, China

Corresponding author:Morandotti, Roberto(morandotti@emt.inrs.ca)

Source title:Proceedings of the 2017 Design, Automation and Test in Europe, DATE 2017

Abbreviated source title:Proc. Des., Auto. Test Europe, DATE

Part number:1 of 1

Issue title:Proceedings of the 2017 Design, Automation and Test in Europe, DATE 2017

Issue date:May 11, 2017

Publication year:2017

Pages:336-337

Article number:7927012

Language:English

ISBN-13:9783981537093

Document type:Conference article (CA)

Conference name:20th Design, Automation and Test in Europe, DATE 2017

Conference date:March 27, 2017 - March 31, 2017

Conference location:Swisstech, Lausanne, Switzerland

Conference code:127781

Sponsor:ACM Special Interest Group on Design Automation (ACM SIGDA); Electronic System Design Alliance (ESDA); et al.; European Design and Automation Association (EDAA); European Electronic Chips and Systems Design Initiative (ECSI); IEEE Council on Electronic Design Automation (CEDA)

Publisher:Institute of Electrical and Electronics Engineers Inc.

Abstract:The generation of optical quantum states on an integrated platform will enable low cost and accessible advances for quantum technologies such as secure communications and quantum computation. We demonstrate that integrated quantum frequency combs (based on high-Q microring resonators made from a CMOS-compatible, high refractive-index glass platform) can enable, among others, the generation of heralded single photons, cross-polarized photon pairs, as well as bi- and multi-photon entangled qubit states over a broad frequency comb covering the S, C, L telecommunications band, constituting an important cornerstone for future practical implementations of photonic quantum information processing. © 2017 IEEE.

Number of references:9

Main heading:Quantum entanglement

Controlled terms:Four wave mixing - Light - Mixer circuits - Nonlinear optics - Photons - Quantum computers - Quantum cryptography - Quantum optics - Refractive index

Uncontrolled terms:Cross-polarized photon pairs - Heralded single photons - High refractive index glass - Integrated optics devices - Integrated platform - Microring resonator - Quantum technologies - Quantum-information processing

Classification code:713.3 Modulators, Demodulators, Limiters, Discriminators, Mixers - 722 Computer Systems and Equipment - 741.1 Light/Optics - 741.1.1 Nonlinear Optics - 931.3 Atomic and Molecular Physics - 931.4 Quantum Theory; Quantum Mechanics

DOI:10.23919/DATE.2017.7927012

Database:Compendex

Accession number:20164402973003

Title:Study on the key technologies of a high-speed CMOS camera

Authors:Jiang, Baotan (1, 2, 3); Pan, Zhibin (1); Qiu, Yuehong (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:129

Issue date:January 1, 2017

Publication year:2017

Pages:100-107

Language:English

ISSN:00304026

Document type:Journal article (JA)

Publisher:Elsevier GmbH

Abstract:The high-speed CMOS camera can be widely applied in image technology detection, image measurement, video monitoring, and satellite remote sensing. Given the large image data volume, many technical problems may be encountered in acquisition and transfer of image data and real-time processing. CMV4000 from CMOSIS Company has been selected as image sensor to research application problems. The high-frame and high-definition industrial camera has been designed based on CMV4000 image sensor, FPGA, DDR2 SDRAM high-speed memory chip, and USB3.0 technology. The camera is made up of data automatic alignment module, image acquisition module, memory module, and transfer module. These modules have realized data alignment, acquisition, cache, and transfer of high-speed data. An automatic alignment module is proposed which based on the sliding window consists of register for high-speed image sensor with multi-channel LVDS interface. This module can automatically identify training data sent by LVDS serial channel, and lock the sliding window when finding “Training Pattern”, then realize automatic alignment and synchronization for high-speed and multi-channel data. © 2016 Elsevier GmbH

Number of references:7

Main heading:Image acquisition

Controlled terms:Alignment - Cameras - CMOS integrated circuits - Dynamic random access storage - Field programmable gate arrays (FPGA) - Image sensors - Remote sensing - Speed

Uncontrolled terms:Acquisition modules - CMOS camera - Data alignments - High-speed image sensors - LVDS - Realtime processing - Research applications - Satellite remote sensing

Classification code:601.1 Mechanical Devices - 714.2 Semiconductor Devices and Integrated Circuits - 721.2 Logic Elements - 722.1 Data Storage, Equipment and Techniques - 723 Computer Software, Data Handling and Applications - 742.2 Photographic Equipment

DOI:10.1016/j.ijleo.2016.10.056

Database:Compendex

Accession number:20170303265694

Title:Robust Sparse Coding for Mobile Image Labeling on the Cloud

Authors:Tao, Dapeng (1); Cheng, Jun (2, 3); Gao, Xinbo (4); Li, Xuelong (5); Deng, Cheng (4)

Author affiliation:(1) School of Information Science and Engineering, Yunnan University, Kunming; 650091, China; (2) Laboratory for Human Machine Control, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen; 518055, China; (3) Chinese University of Hong Kong, Hong Kong; (4) School of Electronic Engineering, Xidian University, Xi'an; 710071, China; (5) 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

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

Abbreviated source title:IEEE Trans Circuits Syst Video Technol

Volume:27

Issue:1

Issue date:January 2017

Publication year:2017

Pages:62-72

Article number:7428904

Language:English

ISSN:10518215

CODEN:ITCTEM

Document type:Journal article (JA)

Publisher:Institute of Electrical and Electronics Engineers Inc.

Abstract:With the rapid development of the mobile service and online social networking service, a large number of mobile images are generated and shared on the social networks every day. The visual content of these images contains rich knowledge for many uses, such as social categorization and recommendation. Mobile image labeling has, therefore, been proposed to understand the visual content and received intensive attention in recent years. In this paper, we present a novel mobile image labeling scheme on the cloud, in which mobile images are first and efficiently transmitted to the cloud by Hamming compressed sensing, such that the heavy computation for image understanding is transferred to the cloud for quick response to the queries of the users. On the cloud, we design a sparse correntropy framework for robustly learning the semantic content of mobile images, based on which the relevant tags are assigned to the query images. The proposed framework (called maximum correntropy-based mobile image labeling) is very insensitive to the noise and the outliers, and is optimized by a half-quadratic optimization technique. We theoretically show that our image labeling approach is more robust than the squared loss, absolute loss, Cauchy loss, and many other robust loss function-based sparse coding methods. To further understand the proposed algorithm, we also derive its robustness and generalization error bounds. Finally, we conduct experiments on the PASCAL VOC'07 data set and empirically demonstrate the effectiveness of the proposed robust sparse coding method for mobile image labeling. © 1991-2012 IEEE.

Number of references:77

Main heading:Social networking (online)

Controlled terms:Cloud computing - Codes (symbols) - Error analysis - Image coding - Quadratic programming - Semantics

Uncontrolled terms:Correntropy - Generalization error bounds - Half-quadratic optimizations - Mobile images - Online social networkings - Robust sparse coding - Semantic content - Sparse coding

Classification code:722.4 Digital Computers and Systems - 723 Computer Software, Data Handling and Applications - 723.2 Data Processing and Image Processing

DOI:10.1109/TCSVT.2016.2539778

Funding details: Number: 61572486, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61263048, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61572388, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61432014, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61402458, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;

Funding text:This work was supported in part by the National Natural Science Foundation of China under Grant 61572486, Grant 61572388, Grant 61432014, Grant 61402458, and Grant 61263048

Database:Compendex

Accession number:20170903396367

Title:Fabrication of micro hole array on the surface of CVD ZnS by scanning ultrafast pulse laser for antireflection

Authors:Li, Yangping (1); Zhang, Tianhui (1); Fan, Siling (1); Cheng, Guanghua (2)

Author affiliation:(1) State Key Laboratory of Solidification Processing, MIIT Key Laboratory of Radiation Detection Materials and Devices, School of Materials Science and Engineering, 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 of CAS, Xi'an; Shaanxi; 710119, China

Corresponding author:Li, Yangping(Yangping.li@hotmail.com)

Source title:Optical Materials

Abbreviated source title:Opt Mater

Volume:66

Issue date:April 1, 2017

Publication year:2017

Pages:356-360

Language:English

ISSN:09253467

CODEN:OMATET

Document type:Journal article (JA)

Publisher:Elsevier B.V.

Abstract:Chemical vapor deposited (CVD) ZnS is a promising long-wave infrared (8–12 μm) window material. Yet antireflection is necessary since Fresnel reflection from its surface is high due to the high refractive index of ZnS. Sub-wavelength structured surface of micro hole array was fabricated on CVD ZnS by scanning ultrafast pulse laser ablation. The effects of beam profile, pulse width and beam power on the radius and morphology of the holes were studied. Gaussian beam can cause severe melted-resolidified layers around the hole, yet Bessel beam only resulted in thin ribbon around the hole. The picosecond Bessel laser is more suitable than femtosecond laser for ablating holes on ZnS. The radius of the holes increases with increasing the Bessel beam pulse width and the beam power. But larger power may cause circle grooves around the central holes. Ordered hole array was fabricated on single side of CVD ZnS and antireflection was realized. © 2017 Elsevier B.V.

Number of references:18

Main heading:Gaussian beams

Controlled terms:Ablation - Bessel functions - Chemical vapor deposition - Fabrication - II-VI semiconductors - Infrared radiation - Laser ablation - Laser beams - Refractive index - Zinc - Zinc sulfide

Uncontrolled terms:Chemical vapor deposited - Fresnel reflections - High refractive index - Long wave infrared - Pulse power - Pulsewidths - Structured surfaces - Ultrafast pulse

Classification code:546.3 Zinc and Alloys - 641.2 Heat Transfer - 711 Electromagnetic Waves - 741.1 Light/Optics - 744.8 Laser Beam Interactions - 802.2 Chemical Reactions - 804.2 Inorganic Compounds - 921 Mathematics

DOI:10.1016/j.optmat.2017.02.019

Funding details: Number: B08040, Acronym: -, Sponsor: -;Number: 2015ZF53073, Acronym: -, Sponsor: -;Number: 110-QP-2014, Acronym: -, Sponsor: -;Number: SKLST201503, Acronym: -, Sponsor: Chinese Academy of Sciences;Number: -, Acronym: -, Sponsor: State Key Laboratory of Heavy Oil Processing;Number: -, Acronym: -, Sponsor: State Key Laboratory of Transient Optics and Photonics;

Funding text:This Research was supported by the Aviation Science Fund (Grant no. 2015ZF53073), the Open Research Fund of State Key Laboratory of Transient Optics and Photonics, Chinese Academy of Sciences (Grant no. SKLST201503), the Fund of the State Key Laboratory of Solidification Processing (NWPU), China (Grant No. 110-QP-2014) and the 111 Project (Contract No. B08040).

Database:Compendex

Accession number:20180304652589

Title:Entangled-photons compressive ghost imaging based on spatial correlation of sensing matrix

Authors:Liu, Dawei (1, 2); Li, Lifei (1); Geng, Yixing (1); Kang, Yan (1, 2); Zhang, Tongyi (1, 2); Zhao, Wei (1, 2); Dong, Weibin (3); Shi, Kunlin (3)

Author affiliation:(1) Chinese Academy of Sciences, Xi'an Institute of Optics and Precision Mechanics, State Key Laboratory of Transient Optics and Photonics, Xi'an, China; (2) University of Chinese Academy of Sciences, Beijing, China; (3) Xi'an Institute of Electro-Mechanical Information Technology, Xi'an, China

Corresponding author:Li, Lifei(lilifei@opt.ac.cn)

Source title:Optical Engineering

Abbreviated source title:Opt Eng

Volume:56

Issue:12

Issue date:December 2017

Publication year:2017

Article number:123108

Language:English

ISSN:00913286

E-ISSN:15602303

CODEN:OPEGAR

Document type:Journal article (JA)

Publisher:SPIE

Abstract:Using the entangled photons generated by the spontaneous parametric down conversion as a light source, we demonstrate the first quantum ghost imaging system with a modified compressive sensing technique based on the spatial correlation of sensing matrix (SCCS). The ghost image is achieved at 16.27% sampling ratio of raster scanning and 0.65 photons/pixel at each measurement on average. Our results show that image quality and photon-utilization efficiency are remarkably enhanced in comparison with the traditional compressive imaging technique, due to the sensing matrix and noise-free measurement vector rebuilt by SCCS technique. It suggests the great potential of SCCS technique applied in quantum imaging and other quantum optics fields, such as quantum charactering and quantum state tomography to use the information loaded in each photon with high efficiency. © 2017 Society of Photo-Optical Instrumentation Engineers (SPIE).

Number of references:20

Main heading:Quantum entanglement

Controlled terms:Compressed sensing - Efficiency - Image enhancement - Light - Light sources - Optical frequency conversion - Photons - Quantum optics

Uncontrolled terms:Compressive imaging - Compressive sensing - Entangled photons - Ghost imaging - Quantum ghost imaging - Quantum state tomography - Spatial correlations - Spontaneous parametric down conversion

Classification code:716.1 Information Theory and Signal Processing - 741.1 Light/Optics - 741.1.1 Nonlinear Optics - 913.1 Production Engineering - 931.3 Atomic and Molecular Physics - 931.4 Quantum Theory; Quantum Mechanics

Numerical data indexing:Percentage 1.63e+01%

DOI:10.1117/1.OE.56.12.123108

Funding details: Number: KH2016003, Acronym: -, Sponsor: -;Number: XAB2015B24, Acronym: -, Sponsor: -;Number: -, Acronym: CAS, Sponsor: Chinese Academy of Sciences;Number: 2017ZDJC-27, Acronym: -, Sponsor: Natural Science Foundation of Shaanxi Province;Number: 61475191, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;

Funding text:This work is supported by NSFC (Grant No. 61475191), CAS "Light of West China" Program (Grant No. XAB2015B24), CNGC "Process and technology basis" program (Grant No. KH2016003) and Natural Science Basics Research Plan in Shaanxi Province of China (Grant No. 2017ZDJC-27).

Database:Compendex

Accession number:20173804172486

Title:Discrete Nonnegative Spectral Clustering

Authors:Yang, Yang (1); Shen, Fumin (1); Huang, Zi (2); Shen, Heng Tao (1); Li, Xuelong (3)

Author affiliation:(1) Center for Future Media, School of Computer Science and Engineering, University of Electronic Science and Technology of China, Chengdu Shi; 610051, China; (2) School of Information Technology and Electrical Engineering, University of Queensland, St Lucia; QLD; 4072, 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, Shaanxi; 710119, China

Corresponding author:Shen, Heng Tao(shenhengtao@hotmail.com)

Source title:IEEE Transactions on Knowledge and Data Engineering

Abbreviated source title:IEEE Trans Knowl Data Eng

Volume:29

Issue:9

Issue date:September 1, 2017

Publication year:2017

Pages:1834-1845

Article number:7920371

Language:English

ISSN:10414347

CODEN:ITKEEH

Document type:Journal article (JA)

Publisher:IEEE Computer Society

Abstract:Spectral clustering has been playing a vital role in various research areas. Most traditional spectral clustering algorithms comprise two independent stages (e.g., first learning continuous labels and then rounding the learned labels into discrete ones), which may cause unpredictable deviation of resultant cluster labels from genuine ones, thereby leading to severe information loss and performance degradation. In this work, we study how to achieve discrete clustering as well as reliably generalize to unseen data. We propose a novel spectral clustering scheme which deeply explores cluster label properties, including discreteness, nonnegativity, and discrimination, as well as learns robust out-of-sample prediction functions. Specifically, we explicitly enforce a discrete transformation on the intermediate continuous labels, which leads to a tractable optimization problem with a discrete solution. Besides, we preserve the natural nonnegative characteristic of the clustering labels to enhance the interpretability of the results. Moreover, to further compensate the unreliability of the learned clustering labels, we integrate an adaptive robust module with &ell; 2,p loss to learn prediction function for grouping unseen data. We also show that the out-of-sample component can inject discriminative knowledge into the learning of cluster labels under certain conditions. Extensive experiments conducted on various data sets have demonstrated the superiority of our proposal as compared to several existing clustering approaches. © 1989-2012 IEEE.

Number of references:52

Main heading:Clustering algorithms

Controlled terms:Optimization

Uncontrolled terms:Discrete optimization - Discrete transformation - Non negatives - Optimization problems - Performance degradation - Prediction function - Spectral clustering - Spectral clustering algorithms

Classification code:903.1 Information Sources and Analysis - 921.5 Optimization Techniques

DOI:10.1109/TKDE.2017.2701825

Funding details: Number: 61632007, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: ZYGX2015J055, Acronym: -, Sponsor: -;

Funding text:This work was supported in part by the National Natural Science Foundation of China under Project 61572108, Project 61632007 and Project 61502081, the National Thousand-Young-Talents Program of China, and the Fundamental Research Funds for the Central Universities under Project ZYGX2014Z007 and Project ZYGX2015J055.

Database:Compendex

Accession number:20181204935834

Title:Multi-channel phase-sensitive amplification in nonlinear waveguides

Authors:Zhang, Y. (1); Reimer, C. (1); Wu, J. (1); Roztocki, P. (1); Wetzel, B. (1, 2); Little, B.E. (3); Chu, S.T. (4); Moss, D.J. (5); Kues, M. (1, 6); Morandotti, R. (1, 7)

Author affiliation:(1) INRS-EMT, 1650 Boulevard Lionel-Boulet, Varennes; QC; J3X 1S2, Canada; (2) Department of Physics and Astronomy, University of Sussex, Falmer Brighton; BN1 9QH, United Kingdom; (3) State Key Laboratory of Transient Optics and Photonics, Chinese Academy of Science, Xi'an, China; (4) City University of Hong Kong, Department of Physics and Material Science, Tat Chee Avenue, Hong Kong, Hong Kong; (5) Center for Micro-Photonics, Swinburne University of Technology, Hawthorne; VIC; 3122, Australia; (6) School of Engineering, University of Glasgow, Rankine Building, Oakfield Avenue, Glasgow; G12 8LT, United Kingdom; (7) Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu; 610054, China

Source title:2017 Conference on Lasers and Electro-Optics, CLEO 2017 - Proceedings

Abbreviated source title:Conf. Lasers. Electr.-Opt., Proc.

Volume:2017-January

Part number:1 of 1

Issue title:2017 Conference on Lasers and Electro-Optics, CLEO 2017 - Proceedings

Issue date:October 25, 2017

Publication year:2017

Pages:1-2

Language:English

ISBN-13:9781943580279

Document type:Conference article (CA)

Conference name:2017 Conference on Lasers and Electro-Optics, CLEO 2017

Conference date:May 14, 2017 - May 19, 2017

Conference location:San Jose, CA, United states

Conference code:131854

Sponsor:AdValue Photonics; American Elements - The Materials Science Company; Coherent; et al.; KMLabs - Leading in Ultrafast; MKS

Publisher:Institute of Electrical and Electronics Engineers Inc.

Number of references:11

Main heading:Waveguides

Uncontrolled terms:Extinction ratios - Initial phasis - Multi channel - Net gain - Nonlinear waveguides - On chips

Classification code:714.3 Waveguides

Numerical data indexing:Decibel 1.50e+01dB, Decibel 5.00e+00dB

DOI:10.1364/CLEO_AT.2017.JTh2A.91

Database:Compendex

Accession number:20182405306848

Title:Optical pulling nanoparticles with nonparaxial accelerating beams

Authors:Han, Guoxia (1, 2); Huang, Zhangxiang (1, 2); An, Sha (2); Peng, Tong (2); Wang, Meirong (3); Yao, Baoli (2); Zhang, Peng (2)

Author affiliation:(1) College of Science, China University of Petroleum (East China), Qingdao, Shandong; 266580, China; (2) State of Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Science, Xi'an, shaanxi; 710119, China; (3) 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

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

Source title:2017 Opto-Electronics and Communications Conference, OECC 2017 and Photonics Global Conference, PGC 2017

Abbreviated source title:Opto-Electron. Commun. Conf., OECC Photonics Glob. Conf., PGC

Volume:2017-November

Part number:1 of 1

Issue title:2017 Opto-Electronics and Communications Conference, OECC 2017 and Photonics Global Conference, PGC 2017

Issue date:November 17, 2017

Publication year:2017

Pages:1-2

Language:English

ISBN-13:9781509062935

Document type:Conference article (CA)

Conference name:2017 Opto-Electronics and Communications Conference, OECC 2017 and Photonics Global Conference, PGC 2017

Conference date:July 31, 2017 - August 4, 2017

Conference location:Singapore, Singapore

Conference code:132616

Publisher:Institute of Electrical and Electronics Engineers Inc.

Abstract:We propose and theoretically demonstrate the generation of optical traction of nanoparticles through nonparaxial accelerating beams. A convenient optical pulling and manipulating of nanoparticles along curved trajectory is achieved, and the method to determine the conditions of optical traction is also presented. © 2017 IEEE.

Number of references:9

Main heading:Photonics

Controlled terms:Nanoparticles

Uncontrolled terms:Nonparaxial - Pulling force

Classification code:741.1 Light/Optics - 761 Nanotechnology - 933 Solid State Physics

DOI:10.1109/OECC.2017.8114892

Database:Compendex

Accession number:20172203698736

Title:Online measurement of atmospheric density based on space vehicle platform

Authors:Wang, Chao-Jie (1, 2); Wang, Bo (3); Guo, Hui-Nan (4); Qin, Lai-An (5)

Author affiliation:(1) National University of Defense Technology, Changsha; 410073, China; (2) National Key Laboratory of Science and Technology on Nearspace Vehicle Technology, Beijing; 100076, China; (3) Beijing No. 8 High School, Beijing; 100033, China; (4) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (5) Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei; 230031, China

Corresponding author:Qin, Lai-An(qinlaian@163.com)

Source title:Guangxue Jingmi Gongcheng/Optics and Precision Engineering

Abbreviated source title:Guangxue Jingmi Gongcheng

Volume:25

Issue:1

Issue date:January 1, 2017

Publication year:2017

Pages:15-20

Language:Chinese

ISSN:1004924X

CODEN:GJGOF4

Document type:Journal article (JA)

Publisher:Chinese Academy of Sciences

Abstract:In view of the high-altitude atmospheric density fluctuation and the difficulty to identify aerodynamic characteristics of the aircraft in orbit, a technical solution for atmospheric density measurement by lidar based on Rayleigh scattering principle was proposed. The online data of atmospheric density at different distances was acquired through the analysis of the laser backscattering Rayleigh optical cylinder, which was captured by the Electron-Multiplying Charge Coupled Device (EMCCD) in the measuring flow field based on the principle that the density of gas molecules is in direct proportion to Rayleigh scattering intensity. Furthermore the atmospheric density online measuring instrument was developed and calibrated. Experimental and calibration results show that the online measurement precision of atmospheric density is controlled within 5%. The instrument has a promising application in optimization of spacecraft appearance and improvement of aerodynamic identification. © 2017, Science Press. All right reserved.

Number of references:12

Main heading:Density of gases

Controlled terms:Aerodynamics - Atmospheric density - Charge coupled devices - Optical radar - Orbits - Rayleigh scattering - Spacecraft

Uncontrolled terms:Aerodynamic characteristics - Electron multiplying charge coupled devices - Laser backscattering - On-line measurement - Online measuring - Scattering intensity - Space vehicles - Technical solutions

Classification code:443.1 Atmospheric Properties - 651.1 Aerodynamics, General - 655.1 Spacecraft, General - 711 Electromagnetic Waves - 714.2 Semiconductor Devices and Integrated Circuits - 716.2 Radar Systems and Equipment - 931.2 Physical Properties of Gases, Liquids and Solids

Numerical data indexing:Percentage 5.00e+00%

DOI:10.3788/OPE.20172501.0015

Database:Compendex

Accession number:20172703894842

Title:Robust Web Image Annotation via Exploring Multi-Facet and Structural Knowledge

Authors:Hu, Mengqiu (1); Yang, Yang (1); Shen, Fumin (1); Zhang, Luming (2); Shen, Heng Tao (1); Li, Xuelong (3)

Author affiliation:(1) Center for Future Media, School of Computer Science and Engineering, University of Electronic Science and Technology of China, Chengdu; 610051, China; (2) Department of CSIE, Hefei University of Technology, Hefei; 230009, 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; 710119, China

Corresponding author:Yang, Yang(dlyyang@gmail.com)

Source title:IEEE Transactions on Image Processing

Abbreviated source title:IEEE Trans Image Process

Volume:26

Issue:10

Issue date:October 2017

Publication year:2017

Pages:4871-4884

Article number:7953515

Language:English

ISSN:10577149

CODEN:IIPRE4

Document type:Journal article (JA)

Publisher:Institute of Electrical and Electronics Engineers Inc.

Abstract:Driven by the rapid development of Internet and digital technologies, we have witnessed the explosive growth of Web images in recent years. Seeing that labels can reflect the semantic contents of the images, automatic image annotation, which can further facilitate the procedure of image semantic indexing, retrieval, and other image management tasks, has become one of the most crucial research directions in multimedia. Most of the existing annotation methods, heavily rely on well-labeled training data (expensive to collect) and/or single view of visual features (insufficient representative power). In this paper, inspired by the promising advance of feature engineering (e.g., CNN feature and scale-invariant feature transform feature) and inexhaustible image data (associated with noisy and incomplete labels) on the Web, we propose an effective and robust scheme, termed robust multi-view semi-supervised learning (RMSL), for facilitating image annotation task. Specifically, we exploit both labeled images and unlabeled images to uncover the intrinsic data structural information. Meanwhile, to comprehensively describe an individual datum, we take advantage of the correlated and complemental information derived from multiple facets of image data (i.e., multiple views or features). We devise a robust pairwise constraint on outcomes of different views to achieve annotation consistency. Furthermore, we integrate a robust classifier learning component via &ell;<inf>2,p</inf>loss, which can provide effective noise identification power during the learning process. Finally, we devise an efficient iterative algorithm to solve the optimization problem in RMSL. We conduct comprehensive experiments on three different data sets, and the results illustrate that our proposed approach is promising for automatic image annotation. © 2017 IEEE.

Number of references:74

Main heading:Image annotation

Controlled terms:Content based retrieval - Image analysis - Iterative methods - Learning algorithms - Semantics - Supervised learning

Uncontrolled terms:Labeled training data - Multi-view learning - Optimization problems - Scale invariant feature transforms - Semi- supervised learning - Structural information - Structural knowledge - Web image annotations

Classification code:921.6 Numerical Methods

DOI:10.1109/TIP.2017.2717185

Funding details: Number: 61632007, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61572108, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61502081, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: ZYGX2015J055, Acronym: -, Sponsor: -;Number: ZYGX2014Z007, Acronym: -, Sponsor: -;

Funding text:This work was supported in part by the National Natural Science Foundation of China under Project 61572108, Project 61632007, and Project 61502081, in part by the National Thousand-Young-Talents Program of China, and in part by the Fundamental Research Funds for the Central Universities under Project ZYGX2014Z007 and Project ZYGX2015J055.

Database:Compendex

Accession number:20182205249292

Title:Sensorless control of three-phase permanent magnet synchronous motor based on fundamental wave mathematical model

Authors:Xing, Shi Chen (1); Chen, Wang (2)

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

Corresponding author:Xing, Shi Chen(494620933@qq.com)

Source title:Proceedings - 2017 2nd International Conference on Cybernetics, Robotics and Control, CRC 2017

Abbreviated source title:Proc. - Int. Conf. Cybern., Robot. Control, CRC

Volume:2018-January

Part number:1 of 1

Issue title:Proceedings - 2017 2nd International Conference on Cybernetics, Robotics and Control, CRC 2017

Issue date:July 2, 2017

Publication year:2017

Pages:89-93

Language:English

ISBN-13:9781538606773

Document type:Conference article (CA)

Conference name:2nd International Conference on Cybernetics, Robotics and Control, CRC 2017

Conference date:July 21, 2017 - July 23, 2017

Conference location:Chengdu, Sichuan, China

Conference code:135561

Publisher:Institute of Electrical and Electronics Engineers Inc.

Abstract:In the case of vector control using magnetic field orientation, in order to achieve high performance three-phase PMSM (Permanent Magnet Synchronous Motor) control system, generally we need to obtain an accurate rotor position and speed information, but the use of mechanical sensors will increase the use of system cost, size and quality, and the use of the environment has a more stringent requirements. Sensorless control technology detects the motor winding and focusing on the relevant electrical signals and uses a certain control algorithm to achieve the rotor position and speed estimates. It represents the three-phase PMSM control system development trend. This paper focuses on the sensorless control of three-phase permanent magnet synchronous motor based on the fundamental wave mathematical model. This method relies on the rotational speed-related quantities (such as the generated back electromotive force) in the three-phase PMSM fundamental excitation mathematical model for rotor position and velocity. It is estimated that since the signal-to-noise ratio of the useful signal is low when the motor is running at zero speed and very low speed, it is usually difficult to extract. Thus, ultimately, dependence on the fundamental excitation ultimately results in failure of rotor position and velocity detection at zero speed and low speed. At present, the commonly used algorithms include sliding mode observer algorithm, model reference adaptive control algorithm and extended Kalman filter algorithm. In this paper, the sliding mode observer algorithm is analyzed and modeled. This paper firstly introduces the basic concept of sliding mode control, and then analyzes the commonly used traditional sliding mode observer algorithm and the sliding mode observer algorithm in synchronous rotating coordinate system. Secondly, the permanent magnet synchronous motor control system based on two algorithms is simulated in Matlab2016 / Simulink environment. The response curves of the two control system simulation models under the condition of external disturbance are analyzed.We can get a conclusion that by selecting the appropriate controller parameters, SMO (sliding mode observer)-based three-phase PMSM sensorless control technology can meet the needs of the actual motor control performance. © 2017 IEEE.

Number of references:5

Main heading:Sensorless control

Controlled terms:AC motors - Control systems - Estimation - Kalman filters - Model reference adaptive control - Permanent magnets - Quality control - Robotics - Signal to noise ratio - Sliding mode control - Speed - Synchronous motors - Vector control (Electric machinery)

Uncontrolled terms:Back electromotive force - Co-ordinate system - Control system simulations - Extended Kalman filter algorithm - Magnetic field orientations - Permanent Magnet Synchronous Motor - Rotating coordinate system - Sliding mode observers

Classification code:704.1 Electric Components - 705.3.1 AC Motors - 716.1 Information Theory and Signal Processing - 731 Automatic Control Principles and Applications - 913.3 Quality Assurance and Control - 921 Mathematics

DOI:10.1109/CRC.2017.29

Database:Compendex

Accession number:20182105211474

Title:Demonstration of Real-Time Modulation-Adaptable Transmitter

Authors:Yan, Shuangyi (1); Beldachi, Arash Farhadi (1); Qian, Fengchen (1, 2); Kondepu, Koteswararao (1); Yan, Yan (1); Jackson, Chris (1); Nejabati, Reza (1); Simeonidou, DImitra (1)

Author affiliation:(1) High Performance Networks Group, University of Bristol, United Kingdom; (2) Xi'an Institute of Optics and Precision Mechanics, CAS, Xi'an, China

Source title:European Conference on Optical Communication, ECOC

Abbreviated source title:Eur Conf Opt Commun ECOC

Volume:2017-September

Part number:1 of 1

Issue title:43rd European Conference on Optical Communication, ECOC 2017

Issue date:July 2, 2017

Publication year:2017

Pages:1-3

Language:English

CODEN:85MOAV

ISBN-13:9781538656242

Document type:Conference article (CA)

Conference name:43rd European Conference on Optical Communication, ECOC 2017

Conference date:September 17, 2017 - September 21, 2017

Conference location:Gothenburg, Sweden

Conference code:136165

Publisher:Institute of Electrical and Electronics Engineers Inc.

Abstract:We demonstrate a 26 Gbaud real-time quick-reconfigurable 16QAM/QPSK-adaptable transmitter. The modulation format can be switched in less than a second by an RMAT agent. The FPGA-driven reconfigurable transmitter can work as a generic edge-node interface for traffic aggregation. © 2017 IEEE.

Number of references:4

Main heading:Optical communication

Controlled terms:Modulation - Transmitters

Uncontrolled terms:Edge nodes - Modulation formats - Real time - Reconfigurable - Reconfigurable transmitters - Traffic aggregation

Classification code:717.1 Optical Communication Systems

DOI:10.1109/ECOC.2017.8346029

Database:Compendex

Accession number:20163002643529

Title:A Biologically Inspired Appearance Model for Robust Visual Tracking

Authors:Zhang, Shengping (1); Lan, Xiangyuan (2); Yao, Hongxun (1); Zhou, Huiyu (3); Tao, Dacheng (4); Li, Xuelong (5)

Author affiliation:(1) School of Computer Science and Technology, Harbin Institute of Technology, Weihai, China; (2) Department of Computer Science, Hong Kong Baptist University, Hong Kong, Hong Kong; (3) School of Electronics, Electrical Engineering and Computer Science, Queen's University Belfast, Belfast, United Kingdom; (4) Centre for Quantum Computation and Intelligent Systems, Faculty of Engineering and Information Technology, University of Technology, 81 Broadway Street Ultimo, Sydney; NSW, 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, Shaanxi, China

Corresponding author:Zhang, Shengping(s.zhang@hit.edu.cn)

Source title:IEEE Transactions on Neural Networks and Learning Systems

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

Volume:28

Issue:10

Issue date:October 2017

Publication year:2017

Pages:2357-2370

Article number:7516592

Language:English

ISSN:2162237X

E-ISSN:21622388

Document type:Journal article (JA)

Publisher:Institute of Electrical and Electronics Engineers Inc.

Abstract:In this paper, we propose a biologically inspired appearance model for robust visual tracking. Motivated in part by the success of the hierarchical organization of the primary visual cortex (area V1), we establish an architecture consisting of five layers: Whitening, rectification, normalization, coding, and pooling. The first three layers stem from the models developed for object recognition. In this paper, our attention focuses on the coding and pooling layers. In particular, we use a discriminative sparse coding method in the coding layer along with spatial pyramid representation in the pooling layer, which makes it easier to distinguish the target to be tracked from its background in the presence of appearance variations. An extensive experimental study shows that the proposed method has higher tracking accuracy than several state-of-the-art trackers. © 2012 IEEE.

Number of references:75

Main heading:Codes (symbols)

Controlled terms:Object recognition

Uncontrolled terms:Appearance modeling - biologically inspiration - Biologically inspired - Hierarchical organizations - Primary visual cortex - Sparse coding - Tracking accuracy - Visual Tracking

Classification code:723.2 Data Processing and Image Processing

DOI:10.1109/TNNLS.2016.2586194

Database:Compendex

Accession number:20174004234853

Title:HDPA: Hierarchical deep probability analysis for scene parsing

Authors:Yuan, Yuan (1); Jiang, Zhiyu (1, 2); Wangm, Qi (3)

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) 2University of Chinese Academy of Sciences, 19A Yuquanlu, Beijing; 100049, China; (3) School of Computer Science and Center for OPTical IMagery Analysis and Learning (OPTIMAL), Northwestern Polytechnical University, Xi'an, Shaanxi; 710072, China

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

Source title:Proceedings - IEEE International Conference on Multimedia and Expo

Abbreviated source title:Proc. IEEE Int. Conf. Multimedia Expo

Volume:0

Part number:1 of 1

Issue title:2017 IEEE International Conference on Multimedia and Expo, ICME 2017

Issue date:August 28, 2017

Publication year:2017

Pages:313-318

Article number:8019367

Language:English

ISSN:19457871

E-ISSN:1945788X

ISBN-13:9781509060672

Document type:Conference article (CA)

Conference name:2017 IEEE International Conference on Multimedia and Expo, ICME 2017

Conference date:July 10, 2017 - July 14, 2017

Conference location:Hong Kong, Hong kong

Conference code:130293

Publisher:IEEE Computer Society

Abstract:Scene parsing is an important task in computer vision and many issues still need to be solved. One problem is about the non-unified framework for predicting things and stuff and the other one refers to the inadequate description of contextual information. In this paper, we address these issues by proposing a Hierarchical Deep Probability Analysis(HDPA) method which particularly exploits the power of probabilistic graphical model and deep convolutional neural network on pixel-level scene parsing. To be specific, an input image is initially segmented and represented through a CNN framework under Gaussian pyramid. Then the graphical models are built under each scale and the labels are ultimately predicted by structural analysis. Three contributions are claimed: unified framework for scene labeling, hierarchical probabilistic graphical modeling and adequate contextual information consideration. Experiments on three benchmarks show that the proposed method outperforms the state-of-the-arts in scene parsing. © 2017 IEEE.

Number of references:31

Main heading:Formal languages

Controlled terms:Computer vision - Deep neural networks - Graphic methods - Image segmentation - Neural networks - Semantics - Speech recognition

Uncontrolled terms:Contextual information - Deep convolutional neural networks - Gaussian pyramids - Probabilistic graphical models - Probability analysis - Scene parsing - Semantic segmentation - Unified framework

Classification code:721.1 Computer Theory, Includes Formal Logic, Automata Theory, Switching Theory, Programming Theory - 723.5 Computer Applications - 751.5 Speech

DOI:10.1109/ICME.2017.8019367

Funding details: Number: 2013CB336500, Acronym: -, Sponsor: -;Number: 61379094, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 60632018, Acronym: -, Sponsor: -;Number: 61232010, Acronym: -, Sponsor: -;

Funding text:？Qi Wang is the corresponding author of this paper. This work is supported by the National Basic Research Program of China (Youth 973 Program) (Grant No. 2013CB336500), the State Key Program of National Natural Science of China (Grant No. 60632018, 61232010), and the National Science Foundation of China(Grandt No. 61379094).

Database:Compendex

Accession number:20183705812406

Title:Analysis and test study of thermal deformation on a grid reinforced CFRP mirror

Authors:Xu, Liang (1); Ding, Jiao-Teng (1); Wang, Yong-Jie (1); Xie, Yong-Jie (1); Ma, Zhen (1); Fan, Xue-Wu (1)

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

Source title:ICCM International Conferences on Composite Materials

Abbreviated source title:ICCM Int. Conf. Compos. Mater.

Volume:2017-August

Part number:1 of 1

Issue title:21st International Conference on Composite Materials, ICCM 2017

Issue date:2017

Publication year:2017

Language:English

Document type:Conference article (CA)

Conference name:21st International Conference on Composite Materials, ICCM 2017

Conference date:August 20, 2017 - August 25, 2017

Conference location:Xi'an, China

Conference code:138793

Publisher:International Committee on Composite Materials

Abstract:Due to the low density and extremely low thermal expansion, carbon fibre reinforced plastic (CFRP) is one of potential materials applied as precise dimension components. High precise structures, such as antenna reflectors and mirrors, require very strict thermal stability. However, the CFRP laminate usually companied with large thermal deformation, because of align error, thickness error, fiber and resin uneven distribution in the preparation. Therefore, a novel grid reinforced structure was adopted to improve stiffness and resistance of thermal deformation. The validity of the design is verified by finite element method. The thermal deformation test based on the vacuum tank verifies the reliability of the finite element analysis results. For 150mm CFRP mirror, the test results show that the thermal deformation RMS is only 16nm when 4.5 raised, so thermal stability is just about 3.5nm/, and satisfied the requirements in high precise structure application. © 2017 International Committee on Composite Materials. All rights reserved.

Number of references:12

Funding details: Number: 51402351, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;

Funding text:This paper has been supported by the National Science Foundation of China under Grant No.51402351

Database:Compendex

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