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2007年

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Accession number:20071410529767

Title:Measurement of standard flame based on illumination

Authors:Dong, Wei (0); An, Ying (0); Zhou, Ren-Kui (0)

Corresponding author:Dong, W.(dong_wei@263.com)

Corr. author affiliation:Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710068, China

Source title:Guangdian Gongcheng/Opto-Electronic Engineering

Abbreviated source title:Guangdian Gongcheng

Volume:34

Issue:2

Issue date:February 2007

Publication year:2007

Pages:41-44

Language:Chinese

ISSN:1003501X

CODEN:GUGOEC

Document type:Journal article (JA)

Publisher:Chinese Academy of Sciences, Chengdu, Sichuan, China

Abstract:It is the main issue for flame detection that the properties of sensors should be evaluated properly in flame alarm and detection. With the infrared sensor calibrated by black body, the spectrum illumination of standard flame source could be produced by the artificial standard light source under a certain condition. The experiment with the standard light source was finished, such as setting up the apparatus, testing and measuring illumination of the standard light source. Experiment results show that it is good to measure illumination by standard sensor in the certain range of error. The uncertainty of test is less than 1%. The basic parameters of artificial light source could be found out.

Number of references:8

Database:Compendex

Accession number:20080511071662

Title:Spatially resolved research of picosecond X-ray multiframes camera with gated microchannel plate

Authors:Yang, Wen-Zheng (1); Tian, Jin-Shou (1); Hou, Xun (1); Bai, Yong-Lin (1); Bai, Xiao-Hong (1); Liu, Bai-Yu (1); Qin, Jun-Jun (1); Ouyang, Xian (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (2) Graduate University, Chinese Academy of Sciences, Beijing 100039, China; (3) School of Electronic and Information, Xi'an Jiaotong University, Xi'an 710049, China

Corresponding author:Yang, W.-Z.(ywz@opt.ac.cn)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:36

Issue:12

Issue date:December 2007

Publication year:2007

Pages:2209-2214

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

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

Abstract:Picosecond X-ray framing camera with gated microchannel plate, shortened form MCP-XFC, is widely applied for some researches as a sort of very important ultrafast diagnosis instrument, such as the implosion of inertial confinement fusion (ICF) experiments, the laser-produced plasmas and Z-pinch. The dynamic spatial resolving power is discussed based on the theoretically models of picosecond (ps) voltage pulse gated MCP and spatial modulation transfer function (SMTF) with proximity focusing system. The relation is also analyzed between the dynamic spatial resolution and some parameters such as the voitage of phosphor screen, the interval of proximity focusing system, the voltage value and the pulse width of picosecond gated pulse. Under practical experiment condition, the compute value of dynamic SMTF with gated MCP-XFC is 24 lp/mm, and this value is accorded with the testing results 25 lp/mm of static spatial resolution. At last, some improved methods are put forward.

Number of references:20

Main heading:Dynamic models

Controlled terms:Cameras - Computer networks - Control theory - Dynamical systems - Dynamics - Electric potential - Experiments - Fusion reactions - Image storage tubes - Inertial confinement fusion - Laser produced plasmas - Mechanics - Microchannels - Modulation - Nuclear physics - Plasma confinement - Plates (structural components) - Pulsed laser deposition - Research - Transfer functions - X rays

Uncontrolled terms:(I ,J) conditions - Applied (CO) - Framing camera (FC) - Improved methods - Inertial-confinement fusion (ICF) - Laser produced plasma (LPP) - Micro-channel plate (MCP) - Multiframes - Phosphor screens - pico seconds - Proximity focusing - Pulse width (PW) - Spatial modulations - Spatial resolution (SR) - Spatial resolution. - Spatially resolved - Testing results - Ultra-fast - voltage pulses - Z pinches

Classification code:901.3 Engineering Research - 921 Mathematics - 931.1 Mechanics - 932.1 High Energy Physics - 932.2 Nuclear Physics - 932.2.1 Fission and Fusion Reactions - 932.3 Plasma Physics - 744.9 Laser Applications - 408.2 Structural Members and Shapes - 604 Metal Cutting and Machining - 701.1 Electricity: Basic Concepts and Phenomena - 714.1 Electron Tubes - 716 Telecommunication; Radar, Radio and Television - 731.1 Control Systems - 742.2 Photographic Equipment

Database:Compendex

Accession number:20074310888790

Title:One-dimension gradient-index lens and application

Authors:Mi, Lei (0); Yao, Sheng-Li (0); Li, Qiang (0); Gao, Feng (0)

Corresponding author:Mi, L.(millay@126.com)

Corr. author affiliation:Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710068, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:36

Issue:9

Issue date:September 2007

Publication year:2007

Pages:1624-1627

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, 710068, China

Abstract:One-dimension gradient-index lens with parabolic-index profiles along the direction of thickness has been fabricated by ion-exchanging process. The ion-exchange principle of One-dimension gradient-index lens and formation process of parabolic-index profiles were introduced. Distribution constant of refraction root A in varied thickness was measured. Application of lens, made a mini and new semiconductor laser coupler were introduced.

Number of references:10

Database:Compendex

Accession number:20080511071655

Title:Analysis of energy transfer among chlorophylls in LHC II trimmer by transient difference absorption spectroscopy

Authors:Liu, Xiao (1); He, Jun-Fang (2); Peng, Ju-Fang (3); Zhang, Su-Juan (2); Wang, Shui-Cai (2); Kuang, Ting-Yun (4)

Author affiliation:(1) Life Science College, Northwest University, Xi'an 710069, 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) Life Science College, Shaanxi Normal University, Xi'an 710062, China; (4) Photosynthesis Research Center, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China

Corresponding author:Liu, X.(little-lx@sohu.com)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:36

Issue:12

Issue date:December 2007

Publication year:2007

Pages:2177-2181

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

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

Abstract:The energy transfer progress between chlorophylls in the LHC II trimmer is studied by transient difference absorption spectroscopy. There are three time components of energy transfer in LHC II trimmer: 748 fs, 3.28 ps and 32.1 ps. The 748 fs lifetime component is assigned to energy transfer from Chl b<inf>649</inf> to Chl a<inf>655</inf> in LCH II monomer, possibly via Chl b<inf>657</inf>. The 3.28 ps relates to the energy transfer from Chl a<inf>677</inf> to Chla of absorbing longer wavelength and that the energy achieving process of Chl b<inf>643,658</inf> and Chl a<inf>668-670</inf> in the monimer. The 32.15 ps relates to the equilibrium between monomers of the trimmer.

Number of references:11

Main heading:Absorption spectroscopy

Controlled terms:Absorption - Bioconversion - Chlorophyll - Energy storage - Energy transfer - Porphyrins - Spectrum analysis

Uncontrolled terms:Time components

Classification code:921 Mathematics - 804.1 Organic Compounds - 802.3 Chemical Operations - 801.2 Biochemistry - 741 Light, Optics and Optical Devices - 525.7 Energy Storage - 525.4 Energy Losses (industrial and residential)

Database:Compendex

Accession number:20075110984995

Title:Fluorescence pH probe based on microstructured polymer optical fiber

Authors:Yang, X.H. (1); Wang, L.L. (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics Tmd Precision Mechanics, Chinese Academy of Sciences, Information Road 17, Xi'an, Shannxi 710119, China

Corresponding author:Wang, L.L.(Wangll@opt.ac.cn)

Source title:Optics Express

Abbreviated source title:Opt. Express

Volume:15

Issue:25

Issue date:December 12, 2007

Publication year:2007

Pages:16478-16483

Language:English

E-ISSN:10944087

Document type:Journal article (JA)

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

Abstract:A kind of optical pH sensor was demonstrated that is based on a pH-sensitive fluorescence dye-doped (eosin) cellulose acetate (CA) thin-film modified microstructured polymer optical fiber (MPOF). It was obtained by directly inhaling an eosin-CA-acetic acid mixed solution into array holes in a MPOF and then removing the solvent (acetic acid). The sensing film showed different fluorescence intensities to different pH solutions in a pH range of 2.5-4.5. Furthermore, the pH response range could be tailored through doping a surfactant, hexadecyl trimethyl ammonium bromide (CTAB), in the sensing film. © 2007 Optical Society of America.

Number of references:32

Main heading:Optical fibers

Controlled terms:Acetic acid - Fluorescence - Microstructure - pH effects

Uncontrolled terms:Fluorescence pH probe - Microstructured polymer optical fiber (MPOF) - Optical pH sensor

Classification code:741.1.2 Fiber Optics - 801.1 Chemistry, General - 804.1 Organic Compounds - 951 Materials Science

Treatment:Experimental (EXP)

DOI:10.1364/OE.15.016478

Database:Compendex

Accession number:20071910594836

Title:Spectral property of ZnSe/SiO2 semiconductor quantum dots glass

Authors:Luo, Zhi-Hui (0); He, Jun-Fang (0); Wang, Min-Qiang (0); Zhang, Su-Juan (0); Peng, Yan-Xiang (0)

Corresponding author:Luo, Z.-H.(amilyhjf@163.com)

Corr. author affiliation:Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710068, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:36

Issue:3

Issue date:March 2007

Publication year:2007

Pages:471-475

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, China

Abstract:Spectral properties of ZnSe/SiO2 semiconductor quantum dots glass prepared by sol-gel method were studied. A blue-shift of the optical absorption edge was observed from the UV-Vis transmission spectra. From the photoluminescence spectra(PL), the lowest exciton emission peak of ZnSe nanocrystals in blue region which was faint and about Gaussian shaped, the strong board surface states luminescence band and three sharp peaks corresponding to the impurity energy levels were discovered. From the time resolved photoluminescence spectra (TRPL), the lowest exciton emission luminescence peak of high luminescence efficiency and its fluorescence lifetime which was 28.5 ps fitted by tail fit were obtained. According to the effective mass approximation (EMA), the average particle size of ZnSe namocrystals is estimated at 2.45~3.60 nm and their size distribution is about Gaussian shaped.

Number of references:13

Database:Compendex

Accession number:20081711220193

Title:Radiation damage and recovery properties in three kinds of polymer optical fiber exposed γ-ray irradiation

Authors:Ge, Wenping (1); Tursun, Dilmurat (2); Wang, Yaoxiang (1); Tian, Weijian (1)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, CAS, Xi'an 710068; (2) College of Information Science and Engineering, Xinjiang University, Urumchi 830046

Corresponding author:Ge, W.

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

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:6686

Monograph title:UV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XV

Issue date:2007

Publication year:2007

Article number:66860M

Language:English

ISSN:0277786X

CODEN:PSISDG

ISBN-13:9780819468345

Document type:Conference article (CA)

Conference name:UV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XV

Conference date:August 26, 2007 - August 27, 2007

Conference location:San Diego, CA, United states

Conference code:71828

Sponsor:The International Society for Optical Engineering (SPIE)

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

Abstract:The radiation damage and recovery of polymethylmethacrylate (PMMA), Polystyrene PS and polycarbonate (PC) optical fiber at y-ray irradiation was researched experimentally. The visible light transmission rate of the POF at different irradiation dose was measured. The results indicated that the radiation damage of three kinds of POF was wavelength-dependent. At lower dose below 1000Gy, the transmission rate decreased identical in the whole visible light range. When the irradiation dose exceeded 5000Gy, the transmission rate reduced obviously, and the transmission rate indicated that the visible light transmission rate of the POF at the range of 400nm to 500nm comparing 600nm to 800nm, decreased seriously. The transmission rate of both PMMA and PC have an evident peak value in the range 550nm-650m, and that of PS has wide peak value at the range 500-700nm. In addition, we measured the recovery of three kinds of POF five times following irradiation at the wavelength 632nm. At low dose irradiation 100Gy, the transmission rate reduced a little , and the irradiation damage can recover during a short time. When the irradiation dose reached 1000 Gy, the recovery process need longer time. When the irradiation dose exceeded 5000 Gy, the transmission rate reduced obviously , and the recovery process is slow and the irradiation damage can't recover completely , that indicated fiber suffered lasting damage.

Number of references:7

Main heading:Optical fibers

Controlled terms:Electron irradiation - Gamma rays - Polymethyl methacrylates - Radiation damage - Wavelength

Uncontrolled terms:Irradiation damage - Irradiation recovery - Polymer optical fibers - Transmission rate - y-ray irradiation

Classification code:622.2 Radiation Effects - 711 Electromagnetic Waves - 741.1.2 Fiber Optics - 815.1.1 Organic Polymers - 931.3 Atomic and Molecular Physics - 932.1 High Energy Physics

Treatment:Theoretical (THR)

DOI:10.1117/12.730808

Database:Compendex

Accession number:20080111005537

Title:Coaxiality method for position and angle deviation measurement

Authors:Wu, Guo-Jun (0); Wu, Ling-Ling (0); Yan, Ya-Dong (0); Cang, Yu-Ping (0); Chen, Liang-Yi (0)

Corresponding author:Wu, G.-J.(wuguojun@opt.ac.cn)

Corr. author affiliation:Xi'an Institute of Optics and Precision Mechanics, CAS, Xi'an 710119, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:36

Issue:11

Issue date:November 2007

Publication year:2007

Pages:2098-2102

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, 710068, China

Abstract:A new type of laser beam-spot receiver system is provided, which was comprised of two units (receiver lens and CCD). In this system, not only position deviation but also angle deviation can be measured by changing the lens' location. A calculation method, which could obviously minish the error induced by the lens optical aberration, was brought forward. Theoretical and experimental data indicate that, for a system whose position measurement range is ± 10 mm, angle measurement range is ± 2°, the lens focal length is 50 mm, and the CCD's size is 1/1.6 inch, the position measurement accuracy is 0.02 mm and the angle measurement accuracy is 9.5 double prime .

Number of references:13

Database:Compendex

Accession number:20071710574750

Title:Numerical prediction on static and dynamic properties for rotating mirror of ultra-high speed photography

Authors:Huang, Hongbin (1); Li, Jingzhen (1); Gong, Xiangdong (1); Sun, Fengshan (2); He, Tiefeng (1)

Author affiliation:(1) College of Science and Technology, Shenzheng University, Shenzhen, 518060, China; (2) Xi'an Institute of Optics and Precision Mechanics, Academia Sinica, Xi'an, 710068, China

Corresponding author:Huang, H.(huanghb@szu.edu.cn)

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

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:6279 PART 3

Monograph title:27th International Congress on High-Speed Photography and Photonics

Issue date:2007

Publication year:2007

Article number:62797L

Language:English

ISSN:0277786X

CODEN:PSISDG

ISBN-10:0819463493

ISBN-13:9780819463494

Document type:Conference article (CA)

Conference name:27th International Congress on High-Speed Photography and Photonics

Conference date:September 17, 2006 - September 22, 2006

Conference location:Xi'an, China

Conference code:69475

Sponsor:COS-Chinese Optical Society, China; XIOPM-Xi'an Institute of Optics and Precision Mechanics, China; Chinese Academy of Sciences, China; State Key Laboratory of Transient Optics and Photonics, China; Shaanxi Association for Science and Technology, China

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

Abstract:The methods of numerical analysis for the strength and vibration modals of rotating mirrors were presented based respectively on the three-dimensional elastic mechanics and dynamics. On strength computation, the finite element models of rotating mirror were established according to the real structure of mirror, and the rotating three-faced aluminous and beryllium mirrors were analysed contrastively. Results display that the surface deformation quantity of the aluminous mirror is approximately 20 times as large as beryllium one, and the maximum stress is 1.6 times against the latter. Then, the three-faced aluminous mirrors were analyzed at variedly fit between shaft and axle hole. One conclusion is gotten out that the mirror strength is foreign to fits, but it is weaken by the axle hole obviously. On the modal analysis of vibration, this method can simulates accurately the natural frequencies and corresponding modalities of mirror. And the results from three-face aluminous mirror indicate that the resonance points of a new mirror may be guaranteed existing in selected speed range.

Number of references:9

Main heading:Finite element method

Controlled terms:Beryllium - Computational methods - Computer simulation - High speed cameras - Mirrors - Numerical methods - Photography

Uncontrolled terms:Aluminous rotating mirrors - Structural strength and modal analysis - Ultra-high speed photography

Classification code:746 Imaging Techniques - 742.2 Photographic Equipment - 741.3 Optical Devices and Systems - 921.6 Numerical Methods - 723.5 Computer Applications - 549 Nonferrous Metals and Alloys - 542.1 Beryllium and Alloys - 721.1 Computer Theory, Includes Formal Logic, Automata Theory, Switching Theory, Programming Theory

Treatment:Theoretical (THR); Experimental (EXP)

DOI:10.1117/12.725994

Database:Compendex

Accession number:20072410651879

Title:Polarization properties of elliptical core non-hexagonal symmetry polymer photonic crystal fibre

Authors:Zhang, Ya-Ni (1); Miao, Run-Cai (1); Ren, Li-Yong (3); Wang, Han-Yi (3); Wang, Li-Li (3); Zhao, Wei (3)

Author affiliation:(1) Institute of Physics and Information Technology, Shaanxi Normal University, Xi'an 710062, China; (2) Department of Physics, Baoji College of Arts and Science, Baoji 721007, China; (3) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710068, China

Corresponding author:Zhang, Y.-N.(zhangyn@opt.ac.cn)

Source title:Chinese Physics

Abbreviated source title:Chin. Phys.

Volume:16

Issue:6

Issue date:June 1, 2007

Publication year:2007

Pages:1719-1724

Article number:039

Language:English

ISSN:10091963

E-ISSN:17414199

CODEN:CHPHF4

Document type:Journal article (JA)

Publisher:Institute of Physics Publishing, Temple Back, Bristol, BS1 6BE, United Kingdom

Abstract:In this paper, polarization properties and propagation characteristics of polymer photonic crystal fibres with elliptical core and non-hexagonal symmetry structure are investigated by using the full vectorial plane wave method. The results show that the birefringence of the fibre is induced by asymmetries of both the cladding and the core. Moreover, by adjusting the non-symmetrical ratio factor of cladding η from 0.4 to 1 in step 0.1, we find the optimized design parameters of the fibre with high birefringence and limited polarization mode dispersion, operating in a single mode regime at an appropriate wavelength range. The range of wavelength approaches the visible and near-infrared which is consistent with the communication windows of polymer optical fibres. © 2007 Chin. Phys. Soc. and IOP Publishing Ltd.

Number of references:23

Main heading:Photonic crystals

Controlled terms:Birefringence - Cladding (coating) - Optical design - Optical fibers - Optimization - Polarization

Uncontrolled terms:Elliptical core non-hexagonal symmetry - Full vectorial plane wave method - Mode dispersion

Classification code:535.1 Metal Rolling - 741.1 Light/Optics - 741.1.2 Fiber Optics - 741.3 Optical Devices and Systems - 921.5 Optimization Techniques

Treatment:Theoretical (THR); Experimental (EXP)

DOI:10.1088/1009-1963/16/6/039

Database:Compendex

Accession number:20081011140007

Title:Integral transformation solution of free-space cylindrical vector beams and prediction of modified Bessel-Gaussian vector beams

Authors:Li, Chun-Fang (1)

Author affiliation:(1) Department of Physics, Shanghai University, Shanghai 200444, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China

Corresponding author:Li, C.-F.(cfli@shu.edu.cn)

Source title:Optics Letters

Abbreviated source title:Opt. Lett.

Volume:32

Issue:24

Issue date:December 15, 2007

Publication year:2007

Pages:3543-3545

Language:English

ISSN:01469592

CODEN:OPLEDP

Document type:Journal article (JA)

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

Abstract:A unified description of free-space cylindrical vector beams is presented that is an integral transformation solution to the vector Helmholtz equation and the transversality condition. In the paraxial condition, this solution not only includes the known J<inf>1</inf> Bessel-Gaussian vector beam and the axisymmetric Laguerre-Gaussian vector beam that were obtained by solving the paraxial wave equations but also predicts two kinds of vector beam, called a modified Bessel-Gaussian vector beam. © 2007 Optical Society of America.

Number of references:20

Main heading:Gaussian beams

Controlled terms:Bessel functions - Helmholtz equation - Integral equations - Mathematical transformations - Vector quantization

Uncontrolled terms:Bessel-Gaussian vector beams - Integral transformation - Laguerre-Gaussian vector beams - Transversality

Classification code:711 Electromagnetic Waves - 921.1 Algebra - 921.2 Calculus - 921.3 Mathematical Transformations

Treatment:Theoretical (THR)

Database:Compendex

Accession number:20071110479584

Title:Analysis of the lateral displacement and optical path difference in wide-field-of-view polarization interference imaging spectrometer

Authors:Wu, Lei (1); Zhang, Chunmin (1); Zhao, Baochang (3)

Author affiliation:(1) School of Science, Xi'an Jiaotong University, Xi'an, 710049, China; (2) Optical Metrology Laboratory, Xi'an Institute of Applied Optics, Xi'an, 710065, China; (3) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, 710068, China

Corresponding author:Wu, L.(runnymede@sohu.com)

Source title:Optics Communications

Abbreviated source title:Opt Commun

Volume:273

Issue:1

Issue date:May 1, 2007

Publication year:2007

Pages:67-73

Language:English

ISSN:00304018

CODEN:OPCOB8

Document type:Journal article (JA)

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

Abstract:The mechanism of beam splitting and principle of wide-field-of-view compensation of modified Savart polariscope in the wide-field-of-view polarization interference imaging spectrometer (WPIIS) are analyzed and discussed. Formulas for the lateral displacement and optical path difference (OPD) produced by the modified Savart polariscope are derived by ray-tracing method. The theoretical and practical guidance is thereby provided for the study, design, modulation, experiment and engineering of the polarization interference imaging spectrometers and other birefringent Fourier-transform spectrometers based on Savart polariscopes. © 2006 Elsevier B.V. All rights reserved.

Number of references:34

Main heading:Spectrometers

Controlled terms:Fourier transforms - Light modulation - Light polarization - Optical properties - Polariscopes - Ray tracing

Uncontrolled terms:Lateral displacement - Optical path difference (OPD) - Polarization interference imaging spectrometers - Savart polariscope

Classification code:741.1 Light/Optics - 741.3 Optical Devices and Systems - 921.3 Mathematical Transformations - 941.3 Optical Instruments

Treatment:Experimental (EXP)

DOI:10.1016/j.optcom.2006.12.034

Database:Compendex

Accession number:20074410897868

Title:Silver nanocrystals modified microstructured polymer optical fibres for chemical and optical sensing

Authors:Yang, Xinghua (1); Wang, Lili (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Information Road 17, Xi'an, Shannxi 710119, China

Corresponding author:Wang, L.(Wangll@opt.ac.cn)

Source title:Optics Communications

Abbreviated source title:Opt Commun

Volume:280

Issue:2

Issue date:December 15, 2007

Publication year:2007

Pages:368-373

Language:English

ISSN:00304018

CODEN:OPCOB8

Document type:Journal article (JA)

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

Abstract:In-fibre chemical and optical sensors based on silver nanocrystals modified microstructured polymer optical fibres (MPOFs) were demonstrated. The silver nanocrystals modified MPOFs were formed by direct chemical reduction of silver ammonia complex ions on the templates of array holes in the microstructure polymer optical fibres. The nanotube-like and nanoisland-like Ag-modified MPOFs could be obtained by adjusting the conditions of Ag-formation in the air holes of MPOFs. SEM images showed that the higher concentration of the reaction solution (silver ammonia 0.5 mol/L, glucose 0.25 mol/L), gave rise to a tubular silver layer in MPOF, while the lower concentration (silver ammonia 0.1 M, glucose 0.05 M) produced an island-like Ag nanocrystal modified MPOF. The tubular Ag-MPOF composite fibre was conductive and could be directly used as array electrodes in electrochemical analyses. It displayed high electrochemical activity on sensing nitrate or nitrite ions. The enhanced fluorescence of dye molecules was observed when the island-like Ag-modified MPOF was inserted into a fluorescent dye solution. © 2007 Elsevier B.V. All rights reserved.

Number of references:36

Main heading:Nanocrystals

Controlled terms:Ammonia - Chemical sensors - Microstructure - Optical fibers - Optical sensors - Polymers - Silver

Uncontrolled terms:Chemical sensing - Polymer optical fibres - Silver microtubes - Silver nanocrystal

Classification code:951 Materials Science - 933.1 Crystalline Solids - 815.1 Polymeric Materials - 804.2 Inorganic Compounds - 801 Chemistry - 761 Nanotechnology - 741.3 Optical Devices and Systems - 741.1.2 Fiber Optics - 547.1 Precious Metals

Treatment:Theoretical (THR); Experimental (EXP)

DOI:10.1016/j.optcom.2007.08.057

Database:Compendex

Accession number:20073410776639

Title:Dispersion control in broadband optical parametric chirped-pulse amplification laser system

Authors:Wang, Hongying (1); Liu, Hongjun (1); Li, Xiaoli (1); Zhao, Wei (1)

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

Corresponding author:Wang, H.(why@opt.ac.cn)

Source title:Guangxue Xuebao/Acta Optica Sinica

Abbreviated source title:Guangxue Xuebao

Volume:27

Issue:7

Issue date:July 2007

Publication year:2007

Pages:1338-1343

Language:Chinese

ISSN:02532239

CODEN:GUXUDC

Document type:Journal article (JA)

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

Abstract:The dispersion of a broadband optical parametric chirped pulses amplification (OPCPA) laser system is investigated. Using the numerical method, the theoretical model of dispersion and the effects of high-order dispersion on the characteristics in temporal and frequency domain of signal pulses are presented in broadband OPCPA laser system. The results demonstrate that dispersion induced by the pulse stretcher and phase change of signal pulses in the amplifier is relatively great, but the dispersion of parametric crystal can be ignored. The pulse duration is mainly controlled by the second-order dispersion, and the pulse signal-noise-ratio and waveform affected by third-order dispersion and fourth-order dispersion. However, the change of pulse frequency from dispersion is negligible.

Number of references:16

Main heading:Ultrafast phenomena

Controlled terms:Dispersion (waves) - Fast Fourier transforms - Numerical methods - Signal to noise ratio

Uncontrolled terms:Optical parametric chirped pulses amplification (OPCPA) - Ultrafast optics

Classification code:711.1 Electromagnetic Waves in Different Media - 741.1.1 Nonlinear Optics - 744.9 Laser Applications - 921.3 Mathematical Transformations - 921.6 Numerical Methods

Treatment:Theoretical (THR)

Database:Compendex

Accession number:20072410654195

Title:Generation of 207-femtosecond pulses from a ytterbium figure-of-eight fibre laser

Authors:Zhao, Wei (1); Zhang, Wei (1); Ma, Hai-Quan (1); Liu, Chang (1); Chen, Guo-Fu (1); Lu, Ke-Qing (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710068, China

Corresponding author:Zhao, W.(weiz@opt.ac.cn)

Source title:Chinese Physics

Abbreviated source title:Chin. Phys.

Volume:16

Issue:4

Issue date:April 1, 2007

Publication year:2007

Pages:1038-1041

Article number:029

Language:English

ISSN:10091963

E-ISSN:17414199

CODEN:CHPHF4

Document type:Journal article (JA)

Publisher:Institute of Physics Publishing, Temple Back, Bristol, BS1 6BE, United Kingdom

Abstract:We report the generation of 207-fs pulses with 1.2 mW average power at 1036 nm directly from a passively mode-locked Yb-doped fibre laser with a nonlinear optical loop mirror for mode-locking and pairs of diffraction gratings for intracavity dispersion compensation. These results imply a 4-fold reduction in pulse duration over previously reported figure-of-eight cavity passively mode-locked Yb-doped fibre lasers. Stable pulse trains are produced at the fundamental repetition rate of the resonator, 24.0 MHz. On the other hand, this laser offers a cleaner spectrum and greater stability and is completely self-starting. © 2007 Chin. Phys. Soc. and IOP Publishing Ltd.

Number of references:15

Main heading:Ultrashort pulses

Controlled terms:Diffraction gratings - Fiber amplifiers - Laser mode locking - Light pulse generators - Nonlinear optics - Ultrafast phenomena - Ytterbium

Uncontrolled terms:Figure-of-eight fibre lasers - Intracavity dispersion - Optical loop mirrors - Ultrafast optical techniques

Classification code:547.2 Rare Earth Metals - 741.1 Light/Optics - 741.1.1 Nonlinear Optics - 741.3 Optical Devices and Systems - 744.1 Lasers, General - 744.4 Solid State Lasers

Treatment:Theoretical (THR)

DOI:10.1088/1009-1963/16/4/029

Database:Compendex

Accession number:20074310888819

Title:Accuracy analysis of adjusting single star simulator

Authors:Yan, Ya-Dong (0); Dong, Xiao-Na (0); He, Jun-Hua (0); Cang, Yu-Ping (0); Chen, Liang-Yi (0)

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

Corr. author affiliation:Xi'an Institute of Optics and Precision Mechanics, CAS, Xi'an 710119, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:36

Issue:9

Issue date:September 2007

Publication year:2007

Pages:1742-1746

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, 710068, China

Abstract:The principle of adjusting single star simulator with Penta Prism method was introduced. A new simple and effective method of judging whether the focus glass be in focus or not was given. A conclusion that pentagonal prism 90° swerving error does not affect the adjusting precision was drown through analyzing the main error sources in detail. And the function of the translational plane precision and changed scalar of ray direction was established. It was proved that it was feasible that adjusting single star simulator with Penta Prism method. This method can meet the demand of parallel error of ±2 arcsec.

Number of references:6

Database:Compendex

Accession number:20075010969115

Title:Dressed multi-wave mixing in a V-type four-level atomic system

Authors:Jiang, Tong (1); Zhang, Yan-Peng (1); Nie, Zhi-Qiang (1); Li, Ling (1); Li, Pei-Zhe (1); Shen, Lei-Jian (1); Fu, Xin (1); Gan, Chen-Li (2); Zhao, Rong-Kuo (1); Song, Jian-Ping (1); Lu, Ke-Qing (3)

Author affiliation:(1) Key Laboratory for Physical Electronics and Devices, Ministry of Education, Xi'An Jiaotong University, Xi'an 710049, China; (2) Department of Physics, University of Arkansas, Fayetteville, AR 72701, United States; (3) State Key Laboratory of Transient Optics and Technology, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710068, China

Corresponding author:Zhang, Y.-P.(ypzhang@mail.xjtu.edu.cn)

Source title:Chinese Physics

Abbreviated source title:Chin. Phys.

Volume:16

Issue:10

Issue date:October 1, 2007

Publication year:2007

Pages:2984-2992

Language:English

ISSN:10091963

E-ISSN:17414199

CODEN:CHPHF4

Document type:Journal article (JA)

Publisher:Institute of Physics Publishing, Temple Back, Bristol, BS1 6BE, United Kingdom

Abstract:The dressed four- and six-wave mixings in a V-type four-level system are considered. Under two different dressed conditions, two- and three-photon resonant Autler-Townes splittings, accompanied by enhancement and suppression of wave mixing signal, are obtained analytically. Meanwhile, an electromagnetic induced transparency of multi-wave mixing is presented, which shows multiple peaks and asymmetric effects caused by one-photon, two-photon and three-photon resonances, separately. The slow light propagation multiple region of multi-wave mixing signal is also obtained. © 2007 Chin. Phys. Soc. and IOP Publishing Ltd.

Number of references:7

Main heading:Four wave mixing

Controlled terms:Electromagnetic induction - Light propagation - Photons - Resonance

Uncontrolled terms:Autler-Townes splitting - Electromagnetic induced transparency - Three-photon resonances - Wave mixing signals

Classification code:701.1 Electricity: Basic Concepts and Phenomena - 711.1 Electromagnetic Waves in Different Media - 741.1 Light/Optics - 931.1 Mechanics - 931.3 Atomic and Molecular Physics

Treatment:Theoretical (THR)

DOI:10.1088/1009-1963/16/10/028

Database:Compendex

Accession number:20072510663494

Title:Design of single-polarization single-mode micro-structured polymer optical fiber

Authors:Wang, Han-Yi (1); Ren, Li-Yong (1); Zhang, Ya-Ni (3); Yao, Bao-Li (1); Zhao, Wei (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (2) Graduate School, Chinese Academy of Sciences, Beijing 100039, China; (3) Department of Physics, Baoji College of Arts and Science, Baoji 721007, China

Corresponding author:Wang, H.-Y.(hanyiw@sina.com)

Source title:Zhongguo Jiguang/Chinese Journal of Lasers

Abbreviated source title:Zhongguo Jiguang

Volume:34

Issue:5

Issue date:May 2007

Publication year:2007

Pages:684-687

Language:Chinese

ISSN:02587025

CODEN:ZHJIDO

Document type:Journal article (JA)

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

Abstract:The single-polarization single-mode (SPSM) micro-structured polymer optical fiber (MPOF) was designed based on polymethyl methacrylate (PMMA). A full vector plane wave expansion method together with perfectly matched boundary conditions is adopted to study the SPSM properties. The dependence of SPSM bandwidth and operation wavelength on fiber parameters was investigated numerically. It indicates that only one polarization state of the fundamental mode can be transmitted within the visible light region from 0.57 μm to 0.71 μ.m according to the different cutoff wavelength for two orthogonal polarization modes. Moreover, the confinement loss of guiding mode is investigated using the beam propagation method. For MPOF with only 7 rings of holes, the confinement loss less than 1.24 dB/m is obtained at the 0.65 μm. This low loss SPSM-MPOF can greatly eliminate the polarization crosstalk and polarization mode dispersion.

Number of references:15

Main heading:Optical fibers

Controlled terms:Beam propagation method - Boundary conditions - Fiber optics - Polarization mode dispersion - Polymers - Polymethyl methacrylates - Single mode fibers

Uncontrolled terms:Confinement loss - Microstructured polymer optical fiber (MPOF) - Single polarization single mode (SPSM) fiber

Classification code:741.1.2 Fiber Optics - 815.1.1 Organic Polymers - 921 Mathematics

Treatment:Experimental (EXP)

Database:Compendex

Accession number:20071410529870

Title:Off-axis revise of PIV watertunnel flow display and analysis system

Authors:Ruan, Chi (0); Sun, Chuan-Dong (0); Bai, Yong-Lin (0); Wang, Yi-Shan (0); Ren, Ke-Hui (0); Feng, Shan (0)

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

Corr. author affiliation:State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710068, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:36

Issue:1

Issue date:January 2007

Publication year:2007

Pages:169-173

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, China

Abstract:Particle image velocimetry (PIV) is a novel flow field measuring technology. PIV system takes picture of the flow tracer particles twice or more and use software processing the particles images. Then the velocity of each position in the measured area will be calculated then the whole flow field information in this area can be obtained. In PIV common use, the laser slice and the CCD screen orientation are vertical. For the limitation in some special application condition, off-axis detecting may be adopted, in which way the laser slice and the CCD screen orientation are not vertical. So in PIV off-axis detecting, the camera optical system, the tracer particle used and the particle image processing are different from PIV common use. To improve the system measurement precision in off-axis detecting, some methods are adopted. The tracer particles are wrapped with silver coating to improve the reflectivity. Scheimpflug focus, adjusting the angle between the imaging lens and CCD target to fit Scheimpflug condition, is used in the experiments to achieve high definition particles images. Then standard grid board and the processing software are used to revise the images and analyse the measured flow field.

Number of references:7

Database:Compendex

Accession number:20073310766863

Title:Robust main direction extraction method for road segment

Authors:Zhang, Dao-Bing (0); Zhang, Hui (0); Zhang, Zheng (0); Liu, Bo (0); Wang, Hong-Qi (0)

Corresponding author:Zhang, D.-B.(gistty@sina.com)

Corr. author affiliation:Xi'an Institute of Optics and Precision Mechanical, Chinese Acad. of Sci., Xi'an 710119, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:36

Issue:SUPPL.

Issue date:June 2007

Publication year:2007

Pages:326-330

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, 710068, China

Abstract:An algorithm of robust main direction extraction method for road segment is presented according to the shape feature of linear road segment in high-resolution remote sensing images. The robust and precise method consists of initial main direction extraction based on the direction histogram of structure tensor and precise direction detection on vectorized edge image. Further application based on the method is to develop active method to extract linear road segments or road network. Experiment results demonstrate that the proposed algorithm provides good mid-result for extracting road sides.

Number of references:8

Database:Compendex

Accession number:20115014590576

Title:Dye-doped microstructured polymer optical fibre laser with high numerical aperture air-clad

Authors:Li, Kang (1); Yang, Xinghua (1); Wang, Lili (1); Zhao, Wei (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710068, China

Corresponding author:Li, K.(likang@opt.ac.cn)

Source title:Conference on Lasers and Electro-Optics, 2007, CLEO 2007

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

Monograph title:Conference on Lasers and Electro-Optics, 2007, CLEO 2007

Issue date:2007

Publication year:2007

Article number:4452587

Language:English

ISBN-13:9781557528346

Document type:Conference article (CA)

Conference name:Conference on Lasers and Electro-Optics, 2007, CLEO 2007

Conference date:May 6, 2007 - May 11, 2007

Conference location:Baltimore, MD, United states

Conference code:87568

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

Abstract:We demonstrated a Hemicyanine dye-doped microstructured polymer optical fibre laser generating up to 200 mW output power with a slope efficiency of 20% and a high numerical aperture air-clad at the wavelength of 578 nm. © 2006 Optical Society of America.

Number of references:7

Main heading:Fiber optic sensors

Controlled terms:Optical fibers

Uncontrolled terms:Air-clad - Dye-doped - Hemicyanine - High numerical apertures - MW output - Polymer optical fibre - Slope efficiencies

Classification code:741.1.2 Fiber Optics

DOI:10.1109/CLEO.2007.4452587

Database:Compendex

Accession number:20071710574691

Title:Property of a reflected Gaussian pulse beam

Authors:Zhang, Jiyue (1); Ge, Guoku (1); Duan, Tao (1); Li, Chunfang (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Science, Xi'an, 710119, China; (2) Dept. of Physics, Shanghai University, Shanghai, 200444, China; (3) Graduate School, Chinese Academy of Science, Beijing, 100049, China; (4) Xi'an University of Science and Technology, Xi'an, 710054, China

Corresponding author:Zhang, J.

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

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:6279 PART 3

Monograph title:27th International Congress on High-Speed Photography and Photonics

Issue date:2007

Publication year:2007

Article number:62795V

Language:English

ISSN:0277786X

CODEN:PSISDG

ISBN-10:0819463493

ISBN-13:9780819463494

Document type:Conference article (CA)

Conference name:27th International Congress on High-Speed Photography and Photonics

Conference date:September 17, 2006 - September 22, 2006

Conference location:Xi'an, China

Conference code:69475

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

Abstract:It is theoretically discussed the reflective property of a Gaussian pulse on the planar dielectric interface. When the decoupling and full-interference approximations are considered, the axes of reflected pulse beam undergoes a lateral shift from the position predicted by geometrical optics. At the same time, the reflected pulse beam still emerge the time delay comparing to the incident pulse beam. The reflected profile is different from the incident pulse beam. Both spatial distribution and temporal distribution of the reflected pulse beam come out the aberrance.

Number of references:9

Main heading:Gaussian beams

Controlled terms:Aberrations - Approximation theory - Geometrical optics - Permittivity - Reflection

Uncontrolled terms:Gaussian pulse - Reflective property - Spatial distribution - Temporal distribution

Classification code:701 Electricity and Magnetism - 711 Electromagnetic Waves - 741.1 Light/Optics - 921.6 Numerical Methods

Treatment:Theoretical (THR)

DOI:10.1117/12.725446

Database:Compendex

Accession number:20141817653421

Title:Dye-doped microstructured polymer optical fibre laser with high numerical aperture air-clad

Authors:Li, Kang (1); Yang, Xinghua (1); Wang, Lili (1); Zhao, Wei (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710068, China

Source title:Optics InfoBase Conference Papers

Abbreviated source title:Opt.InfoBase Conf. Papers

Monograph title:Conference on Lasers and Electro-Optics, CLEO 2007

Issue date:2007

Publication year:2007

Language:English

E-ISSN:21622701

ISBN-10:1557528349

ISBN-13:9781557528346

Document type:Conference article (CA)

Conference name:Conference on Lasers and Electro-Optics, CLEO 2007

Conference date:May 6, 2007 - May 6, 2007

Conference location:Baltimore, MD, United states

Conference code:104696

Publisher:Optical Society of America

Number of references:7

Main heading:Optical fibers

Uncontrolled terms:Air-clad - Dye-doped - Hemicyanine - High numerical apertures - MW output - Polymer optical fibre - Slope efficiencies

Classification code:741.1.2 Fiber Optics

Database:Compendex

Accession number:20070410386248

Title:Giant Goos-Hänchen displacement enhanced by dielectric film in frustrated total internal reflection configuration

Authors:Li, Chun-Fang (1); Duan, Tao (1); Yang, Xiao-Yan (4)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, CAS, Xi'an 710119, China; (2) Department of Physics, Shanghai University, 99 Shangda Road, Shanghai 200444, China; (3) Graduate School, Chinese Academy of Sciences, Beijing 100049, China; (4) Department of Optoelectronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China

Corresponding author:Li, C.-F.(cfli@shu.edu.cn)

Source title:Journal of Applied Physics

Abbreviated source title:J Appl Phys

Volume:101

Issue:1

Issue date:2007

Publication year:2007

Article number:013103

Language:English

ISSN:00218979

CODEN:JAPIAU

Document type:Journal article (JA)

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

Abstract:It is predicted that the Goos-Ha&die;nchen displacement in the usual frustrated total internal reflection configuration can be resonantly enhanced greatly by coating a dielectric thin film onto the surface of the first prism when the angle of incidence is larger than the critical angle for total reflection at the prism-vacuum interface and is smaller than but close to the critical angle for total reflection at the prism-film interface. Theoretical analysis shows that the displacement of transmitted beam is about half the displacement of reflected beam in the thick limit of the vacuum gap between the two prisms. This is to be compared with the relation in the usual symmetric double-prism configuration that the displacement of transmitted beam is equal to the displacement of reflected beam. Numerical simulations for a Gaussian incident beam of waist width of 100 wavelengths reveal that when the dielectric thin film is of the order of wavelength in thickness, both the reflected and transmitted beams maintain well the shape of the incident beam in the thick limit of the vacuum gap. So largely enhanced displacements would lead to applications in optical devices and integrated optics. © 2007 American Institute of Physics.

Number of references:23

Main heading:Dielectric films

Controlled terms:Computer simulation - Integrated optics - Interfaces (materials) - Light reflection - Light transmission - Optical devices - Prisms - Thin films - Vacuum

Uncontrolled terms:Angle of incidence - Critical angle - Total internal reflection - Vacuum gap

Classification code:633 Vacuum Technology - 708.1 Dielectric Materials - 723.5 Computer Applications - 741.1 Light/Optics - 741.3 Optical Devices and Systems - 931.2 Physical Properties of Gases, Liquids and Solids

Treatment:Theoretical (THR)

DOI:10.1063/1.2405737

Database:Compendex

Accession number:20071710574623

Title:Self-starting 21-ps Ti:sapphire laser with high beam quality

Authors:Ling, Weijun (1); Wang, Yishan (1); Zhao, Wei (1); Tian, Jinrong (2); Zhu, Jiangfeng (2); Wei, Zhiyi (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; (2) Laboratory of Optical Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100080

Corresponding author:Ling, W.(wjling@opt.ac.cn)

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

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:6279 PART 2

Monograph title:27th International Congress on High-Speed Photography and Photonics

Issue date:2007

Publication year:2007

Article number:62793U

Language:English

ISSN:0277786X

CODEN:PSISDG

ISBN-10:0819463493

ISBN-13:9780819463494

Document type:Conference article (CA)

Conference name:27th International Congress on High-Speed Photography and Photonics

Conference date:September 17, 2006 - September 22, 2006

Conference location:Xi'an, China

Conference code:69475

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

Abstract:A self-starting all-solid-state picosecond (ps) laser was demonstrated. Different with a standard cavity design with semiconductor saturable-absorber mirror (SESAM), self-starting mode-locking was initiated by stretching the length of arm to reduce the beam spot, which shows the output beam possess higher beam quality than standard one. With a 10% output coupler, we achieved 1 W output power and 21 ps pulse duration at pump power of 4.5 W. High efficiency and high beam quality show the merit of the ps- laser.

Number of references:10

Main heading:Laser beams

Controlled terms:Beam quality - Laser mode locking - Mirrors - Sapphire

Uncontrolled terms:Beam spots - PS pulse duration - PS-lasers - SESAM

Classification code:482.2.1 Gems - 741.1 Light/Optics - 741.3 Optical Devices and Systems - 744.1 Lasers, General - 744.8 Laser Beam Interactions

Treatment:Theoretical (THR)

DOI:10.1117/12.725718

Database:Compendex

Accession number:20074710937264

Title:Characterization of high-power narrow-band terahertz radiation generation using large-aperture photoconductive antennas

Authors:Liu, Ming-Li (0); Zhang, Tong-Yi (0); Sun, Chuan-Dong (0); Wang, Yi-Shan (0); Zhu, Shao-Lan (0); Li, Fan (0); Zhao, Wei (0)

Corresponding author:Liu, M.-L.(liu_mingli@tom.com)

Corr. author affiliation:State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, CAS, Xi'an 710119, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:36

Issue:10

Issue date:October 2007

Publication year:2007

Pages:1793-1798

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, 710068, China

Abstract:High-power narrow-band terahertz (THz) radiations emitted from a biased large-aperture photoconductive antenna triggered by multiple-pulse trains is studied. The effects of the finite lifetime and transient mobility dynamics of photogenerated carriers in the analysis are included. THz waveforms are calculated from the saturation theory of large-aperture photoconductive antennas, and comparisons are made between single-pulse and multiple-pulse saturation properties of THz emission from SI-GaAs and LT-GaAs emitters. The results show that the saturation at high fluence density with the interpulse spacing longer than the carrier lifetime can be avoided by mulitiple-pulse trains excitation large-aperture photoconductive emitters.

Number of references:17

Database:Compendex

Accession number:20074110859912

Title:Effects of surface treatment for sapphire substrate on GaN films

Authors:Peng, Dong-Sheng (0); Feng, Yu-Chun (0); Wang, Wen-Xin (0); Liu, Xiao-Feng (0); Shi, Wei (0); Niu, Han-Ben (0)

Corresponding author:Peng, D.-S.

Corr. author affiliation: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:36

Issue:8

Issue date:August 2007

Publication year:2007

Pages:1443-1447

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, 710068, China

Abstract:Etch pits on sapphire substrate surface are formed after surface treating. GaN films have been grown on sapphire substrate which is treated by chemical method with different etch time by LP-MOCVD. The structure and characters of the GaN films are analyzed by high-resolution double crystal X-ray diffraction (DCXRD), three-dimension visible optics microscope (OM), scanning electron microscope (SEM) and atomic force microscope (AFM). These results indicate that the quality of GaN films grown on sapphire substrate that is chemically etched for 50 minutes is the best. High-resolution double crystal X-ray diffraction presents the GaN films grown on sapphire substrate after surface treatment for 50 minutes (0002) plane and (10-12) plane full-width at half-maximum as low as 202.68 arcsec and 300.24 acrsec, and the root mean surface (RMS) roughness is assessed and find to be 0.184 nm.

Number of references:11

Database:Compendex

Accession number:20080111005552

Title:Segmentation algorithm for infrared dim small targets based on double window

Authors:Jiang, Hai-Jun (0); Liu, Wen (0); Liu, Zhao-Hui (0)

Corresponding author:Jiang, H.-J.

Corr. author affiliation:Xi'an Institute of Optics and Precision Mechanics, CAS, Xi'an 710119, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:36

Issue:11

Issue date:November 2007

Publication year:2007

Pages:2168-2171

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, 710068, China

Abstract:A method of image segmentation for dim small targets in infrared image is proposed. Images are segmented by using double window and contrast threshold. The method can efficiently segment the low SNR small multi targets in the infrared image of the clouds sky background and suppress the noise. The algorithm and traditional fix threshold algorithm are compared. The result of different thresholds and different windows are analysed. Experiment results indicate that the algorithm can obtain satisfied result on execution efficiency and detection probability.

Number of references:9

Database:Compendex

Accession number:20073010707225

Title:Real-time non-destructive measurement of diffraction characteristic of dynamic volume holograms based on phase conjugate

Authors:Ren, Li-Yong (0); Wang, Han-Yi (0); Yao, Bao-Li (0); Wang, Ying-Li (0); Lei, Ming (0)

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

Corr. author affiliation:State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710068, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:36

Issue:6

Issue date:June 2007

Publication year:2007

Pages:1018-1022

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, 710068, China

Abstract:Based on the phase conjugate techniques real-time measurement technique was proposed to test the diffraction of the dynamic volume holograms. In the optical system, the object wave and the reference wave are adjusted much stronger than the probe beam propagating along the counter-direction of the reference wave (this phase-conjugate probe beam is about 1/1000 of the reference beam). Thus the realtime and non-destructive testing of the dynamic holograms can be obtained by measuring the phase-conjugate wave of the object wave, which overcomes the readout erasing effect compared to the conventional technique by directly reading holograms with the reference beam via blocking object beam from time to time. Since the intensity and the polarization of each beam can be adjusted and combined among them by using the quarter-wave plate, polarizer and attenuator, the intensity-modulation or polarization-modulation volume hologram can respectively be recorded and tested. This technique fits for the photorefractive or photochromic holographic materials.

Number of references:15

Database:Compendex

Accession number:20072010602661

Title:Vacuum-arc discharge damage to X-ray framing camera

Authors:Cao, Zhu-Rong (1); Ding, Yong-Kun (1); Zhang, Hai-Ying (1); Bai, Xiao-Hong (2); Liu, Bai-Yu (2); Bai, Yong-Lin (2)

Author affiliation:(1) Research Center of Laser Fusion, CAEP, B.O. Box 919-986, Mianyang 621900, China; (2) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710068, China

Corresponding author:Cao, Z.-R.(cao33jin@yahoo.com.cn)

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

Abbreviated source title:Qiangjiguang Yu Lizishu

Volume:19

Issue:2

Issue date:February 2007

Publication year:2007

Pages:321-326

Language:Chinese

ISSN:10014322

CODEN:QYLIEL

Document type:Journal article (JA)

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

Abstract:Based on the experiment on the Shenguang-II, the damage of the phosphor and the micro-channel plate of the X-ray framing camera, induced by the vacuum-arc discharge, has been investigated. By measuring the position of the arc on the phosphor and the amplitude of the signal, three kinds of the arc discharges have been distinguished, they are scattered arc, strong arc and fixed arc charges. The damage of the imaging tube and the effect of the working state from the three arc discharges have been compared with different intensity and the different position, respectively. The discharge mechanism is explained with the electron field emission theory, and the stability of the damage is analyzed. The field enhanced coefficient of the fixed arc discharge has been deduced from the experiment result.

Number of references:14

Main heading:X ray cameras

Controlled terms:Electron emission - Experiments - Field emission - Phosphors - Scattering - Vacuum

Uncontrolled terms:Imaging tube - Microchannel plate - Vacuum arc discharge - X ray framing camera

Classification code:422.1 Strength of Building Materials : Test Equipment - 633.1 Vacuum Applications - 712.1 Semiconducting Materials - 714.1 Electron Tubes - 741.1 Light/Optics - 901.3 Engineering Research

Treatment:Experimental (EXP)

Database:Compendex

Accession number:20071710574641

Title:Multi-pulse operation of Yb3+-doped fiber mode-locked laser

Authors:Yang, L.Zh. (1); Wang, Y.C. (1); Chen, G.F. (2); Wang, Y.Sh. (2); Zhao, W. (2)

Author affiliation:(1) Physics Department, College of Science, Taiyuan University of Technology, Shanxi, 030024, China; (2) Chinese Academy of Sciences, State Key Laboratory of Transient Optics Technology, Xi'an Institute of Optics and Precision Mechanics, Shannxi, China

Corresponding author:Yang, L.Zh.(office-science@tyut.edu.cn)

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

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:6279 PART 2

Monograph title:27th International Congress on High-Speed Photography and Photonics

Issue date:2007

Publication year:2007

Article number:62794D

Language:English

ISSN:0277786X

CODEN:PSISDG

ISBN-10:0819463493

ISBN-13:9780819463494

Document type:Conference article (CA)

Conference name:27th International Congress on High-Speed Photography and Photonics

Conference date:September 17, 2006 - September 22, 2006

Conference location:Xi'an, China

Conference code:69475

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

Abstract:The multi-pulse operation of the Yb3+-doped fiber mode-locked laser with a polarization sensitive isolator and two polarization controllers is reported. Dual- and triple- pulse of the Yb3+-doped fiber mode-locked laser in the normal dispersion are achieved as the pumping power is increased. The fiber laser can achieve different multi-pulse outputs by adjusting the polarization controllers or increasing the pump power. The results show that over-driving of the fast artificial saturable absorber induced the generation of the multi-pulse.

Number of references:9

Main heading:Fiber lasers

Controlled terms:Doping (additives) - Laser mode locking - Polarization - Ultrashort pulses - Ytterbium compounds

Uncontrolled terms:Multi pulse operation - Nonlinear polarization rotation - Polarization controllers - Polarization sensitive isolators

Classification code:701.1 Electricity: Basic Concepts and Phenomena - 712.1 Semiconducting Materials - 744.1 Lasers, General - 744.4 Solid State Lasers - 804.1 Organic Compounds

Treatment:Theoretical (THR)

DOI:10.1117/12.725385

Database:Compendex

Accession number:20074710937290

Title:Comprehensive error analysis of the velocimetry based on cross-correlation

Authors:Chen, Min (0); He, Jun-Hua (0); Chen, Liang-Yi (0)

Corresponding author:Chen, M.(chenmin@opt.ac.cn)

Corr. author affiliation:Xi'an Institute of Optics and Precision Mechanics, CAS, Xi'an 710119, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:36

Issue:10

Issue date:October 2007

Publication year:2007

Pages:1914-1919

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, 710068, China

Abstract:To improve the accuracy and confidence of cross-correlation method in experiments, various factors, which caused measuring errors are analyzed, and the errors are calculated. Through discussing corresponding methods, a synthesis method is presented.

Number of references:7

Database:Compendex

Accession number:20073310766819

Title:Design of off-axial three-mirror reflective optical system with large field-of-view and long focal length

Authors:Chen, Hao-Feng (0); Li, Ying-Cai (0); Fan, Chao (0); Yi, Hong-Wei (0)

Corresponding author:Chen, H.-F.(wchengao@sina.com)

Corr. author affiliation:Xi'an Institute of Optics and Precision Mechanics, Chinese Acad. of Sci., Xi'an 710119, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:36

Issue:SUPPL.

Issue date:June 2007

Publication year:2007

Pages:142-145

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, 710068, China

Abstract:In order to minimize the effect of central obstruction on the image quality of reflecting optical system, the off-axis three-mirror reflective system plays an important role in application and research. The advantage of the off-axis three-mirror reflective optical system is analyzed, the calculation method of the structural parameters of co-axial three-mirror reflective optical system is described. A system with large field-of-view and long focal length is proposed. The results show that the system has good image quality.

Number of references:6

Database:Compendex

Accession number:20074310888807

Title:New Design of Super Wide Bandwidth Antireflection Film

Authors:Huang, Guang-Wei (0); Tian, Wei-Jian (0); Bu, Jiang-Ping (0)

Corresponding author:Huang, G.-W.(hgw_2001@sina.com)

Corr. author affiliation:Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710068, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:36

Issue:9

Issue date:September 2007

Publication year:2007

Pages:1694-1696

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, 710068, China

Abstract:A new design way is put forward when designing super wide bandwidth antireflection film, use this way to design the antireflection film which the wavelength from 400-1800 nm. By comparing this way with traditional way, it can be found that within 400-l800 nm the reflectance can be controlled under 2%. But this could not be done with traditional way. So this method overcomes the difficulty that cannot be resolved with traditional ones when designing the super wide bandwidth antireflection film.

Number of references:9

Database:Compendex

Accession number:20071710574526

Title:A femtosecond electron diffraction system

Authors:Zhao, Baosheng (1); Zhang, Jie (2); Tian, Jinshou (1); Wang, Junfeng (1); Wu, Jianjun (1); Liu, Yunquan (2); Liu, Hulin (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, CAS, Xi'an 710068, China; (2) Institute of Physics, CAS, Beijing 100080, China

Corresponding author:Zhao, B.

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

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:6279 PART 1

Monograph title:27th International Congress on High-Speed Photography and Photonics

Issue date:2007

Publication year:2007

Article number:62790V

Language:English

ISSN:0277786X

CODEN:PSISDG

ISBN-10:0819463493

ISBN-13:9780819463494

Document type:Conference article (CA)

Conference name:27th International Congress on High-Speed Photography and Photonics

Conference date:September 17, 2006 - September 22, 2006

Conference location:Xi'an, China

Conference code:69475

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

Abstract:The femtosecond electron diffraction (FED) is a unique method for the study of the changes of complex molecular structures, and has been specifically applied in the investigations of transient-optics, opto-physics, crystallography, and other fields. The FED system designed by the present group, consists of a 35nm Ag photocathode evaporated on an ultraviolet glass, an anode with a 0.1mm aperture, two pairs of deflection plate for the deflection of electron beams in X and Y directions, and the Y deflection plate can be used as a scanning plate while measuring the pulse width of electron beams, the double MCPs detector for the enhancing and detecting of electron image. The magnetic lens was used for the focusing of the electron beams, and the focal length is 125mm. The distance between the object(the photocathode) and the image(the sample) is 503mm, and the size of electron beams is smaller than 17μm after focusing, the convergence angle is of -0.075-0.075°, and the temporal resolution is better than 350fs.

Number of references:13

Main heading:Electron diffraction apparatus

Controlled terms:Crystallography - Electron beams - Molecular structure - Optical design - Photocathodes - Transients

Uncontrolled terms:Femtosecond electron diffraction (FED) - Magnetic focusing - Temporal resolution

Classification code:933.1 Crystalline Solids - 931.3 Atomic and Molecular Physics - 801.4 Physical Chemistry - 741.1 Light/Optics - 715 Electronic Equipment, General Purpose and Industrial - 714.1 Electron Tubes - 703.1 Electric Networks

Treatment:Theoretical (THR)

DOI:10.1117/12.725112

Database:Compendex

Accession number:20072210628358

Title:Study of far field temporal characteristics of terahertz radiation generated by large-aperture photoconductive antennas with finite thickness

Authors:Li, Fan (0); Zhang, Tong-Yi (0); Wang, Yi-Shan (0); Zhu, Shao-Lan (0); Zhao, Wei (0); Hou, Xun (0)

Corresponding author:Li, F.(lifan412@tom.com)

Corr. author affiliation:State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, CAS, Xi'an 710068, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:36

Issue:4

Issue date:April 2007

Publication year:2007

Pages:599-602

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, China

Abstract:The far field temporal characteristics of terahertz radiation caused by biased large-aperture photoconductive antennas with finite thickness was analyzed using current surge model which not only include effects of finite lifetime and transient mobility, but also effects of optical time lag and absorption attenuation in photoconductor material. The dependence of the waveforms of the radiated field on optical fluence, carrier relaxation time, carrier lifetime and material thickness are discussed in detail. The contrast is made between terahertz temporal profiles including antennas thickness and excluding thickness.

Number of references:12

Database:Compendex

Accession number:20074910966505

Title:Radiation forces of a highly focused radially polarized beam on spherical particles

Authors:Yan, Shaohui (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) Graduate School, Chinese Academy of Sciences, Beijing 100039, China

Corresponding author:Yan, S.

Source title:Physical Review A - Atomic, Molecular, and Optical Physics

Abbreviated source title:Phys Rev A

Volume:76

Issue:5

Issue date:November 29, 2007

Publication year:2007

Article number:053836

Language:English

ISSN:10502947

E-ISSN:10941622

CODEN:PLRAAN

Document type:Journal article (JA)

Publisher:American Physical Society, One Physics Ellipse, College Park, MD 20740-3844, United States

Abstract:A radially polarized beam focused by a high-numerical-aperture (NA) objective has a strong longitudinal and nonpropagating electric field in the focal region, which implies that it is suitable for axial optical trapping. In this paper, we use the vectorial diffraction integral to represent the field distribution of the radially polarized beam focused by a high-NA objective and then employ the T -matrix method to compute the radiation forces on spherical particles. Effects of different parameters, such as the size of the sphere, the inner radius of the radially polarized beam, and the NA of the objective, on the radiation forces are presented. © 2007 The American Physical Society.

Number of references:26

Main heading:Light polarization

Controlled terms:Electric fields - Electron traps - Elementary particles - Focusing - Matrix algebra - Parameter estimation

Uncontrolled terms:Axial optical trapping - Numerical-aperture (NA) - Radially polarized beams - Radiation forces

Classification code:701.1 Electricity: Basic Concepts and Phenomena - 731.1 Control Systems - 741.1 Light/Optics - 921.1 Algebra - 931.3 Atomic and Molecular Physics

Treatment:Theoretical (THR)

DOI:10.1103/PhysRevA.76.053836

Database:Compendex

Accession number:20073310766851

Title:Research and design of sub-pixel image fusion system based on FPGA

Authors:Ran, Xiao-Qiang (0); Wen, De-Sheng (0); Man, Feng (0)

Corresponding author:Ran, X.-Q.(xqran@126.com)

Corr. author affiliation:Xi'an Institute of Optics and Precision Mechanics, Chinese Acad. of Sci., Xi'an 710119, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:36

Issue:SUPPL.

Issue date:June 2007

Publication year:2007

Pages:274-277

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, 710068, China

Abstract:Sub-pixel image fusion system based on FPGA is designed, and the experimental platform of realtime image fusion is made, too. The real-time system could fuse and display the Sub-pixel image, after two channels CCD signal of Sub-pixel camera was received. The composition of system, the design method of primary modules, and the test results are given in this paper. Experiments show that image fusion is successful and this system feasible.

Number of references:5

Database:Compendex

Accession number:20071810577028

Title:Package and MCPCB for high-power LEDs

Authors:Li, Hua-Ping (0); Chai, Guang-Yue (0); Peng, Wen-Da (0); Niu, Han-Ben (0)

Corresponding author:Li, H.-P.(pwd@szu.edu.cn)

Corr. author affiliation:Xi'an Institute of Optics and Precession Mechanics, Chinese Academy of Sciences, Xi'an 710068, China

Source title:Bandaoti Guangdian/Semiconductor Optoelectronics

Abbreviated source title:Bandaoti Guangdian

Volume:28

Issue:1

Issue date:February 2007

Publication year:2007

Pages:47-50

Language:Chinese

ISSN:10015868

CODEN:BAGUE5

Document type:Journal article (JA)

Publisher:China National Publishing Industry Trading Corporation, Beijing, China

Abstract:From the point of view of solving the heat dissipation and the matching between heat expansion coefficients of the materials for high power LEDs, the package structure and the performances of several types of metal core printed circuit board (MCPCB) have been presented in detail as well as a brief analysis on the conception of heat dissipation. A special MCPCB fabricated by plasma electrolyte oxidation (PEO) is introduced, which is characterized by low cost, good electrical isolation, excellent thermal transfer and its convenience for package processes. And finite element method (FEM) has been used to simulate the temperature distribution in watt-level single-chip LED model. The results show that the thermal impedance of the LED devices reduces from 10 K/W to 6 K/W when the thermal conductivity of the plasma microarc oxidation (MAO) film rises from 2 W · m-1 · K-1 to 5 W · m-1 · K-1.

Number of references:8

Database:Compendex

Accession number:20071610553908

Title:A novel dual-wavelength DFB fiber laser based on symmetrical FBG structure

Authors:Liu, Xueming (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710068, China

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

Source title:IEEE Photonics Technology Letters

Abbreviated source title:IEEE Photonics Technol Lett

Volume:19

Issue:9

Issue date:May 1, 2007

Publication year:2007

Pages:632-634

Language:English

ISSN:10411135

CODEN:IPTLEL

Document type:Journal article (JA)

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

Abstract:A novel grating structure is proposed and demonstrated to obtain stable dual-wavelength (DW) distributed-feedback (DFB) fiber lasers at room temperature. The proposed grating is based on a symmetrical structure, where one half is periodically sampled by "0"-to-"π" period and the other half is done by "π"-to-"0"period. This structure can create two separated resonance cavities and hence achieve the stable DW lasing operation. By fabricating the proposed grating on a piece of Er:Yb-codoped fiber, we experimentally obtain a stable DW-DFB fiber laser with wavelength spacing of &sim;440 pm at room temperature. © 2007 IEEE.

Number of references:11

Main heading:Distributed feedback lasers

Controlled terms:Cavity resonators - Erbium doped fiber amplifiers - Fiber Bragg gratings - Fiber lasers

Uncontrolled terms:Dual-wavelength (DW)

Classification code:714.1 Electron Tubes - 741.1.2 Fiber Optics - 741.3 Optical Devices and Systems - 744.1 Lasers, General - 744.4 Solid State Lasers

Treatment:Experimental (EXP)

DOI:10.1109/LPT.2007.894940

Database:Compendex

Accession number:20072710692430

Title:Method for composing two images of TDI CCD sub-pixel camera

Authors:Zhu, Jia-Jia (0); Wen, De-Sheng (0); Qiao, Wei-Dong (0); Man, Feng (0)

Corresponding author:Zhu, J.-J.(jiajia_xian@163.com)

Corr. author affiliation:Xi'an Institute of Optics Precision Mechanics, Chinese Acad. of Sci., Xi'an 710068, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:36

Issue:5

Issue date:May 2007

Publication year:2007

Pages:933-936

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, 710068, China

Abstract:Based on the analysis of frequency spectrum of the images, a method for composing of two images is proposed. By using the method the high-resolution image was obtained from the two images of the TDI CCD sub-pixel camera. The simulation results show that it was more effective compared to other sub-pixel imaging methods and the resolution of the image can be improved 1.4 times.

Number of references:6

Database:Compendex

Accession number:20071910594849

Title:CCD effect precision in OTF measuring and its rectification

Authors:Wang, Jiao (0); Yang, Jian-Feng (0); Ma, Zhen (0)

Corresponding author:Wang, J.(wangjiacn@sohu.com)

Corr. author affiliation:Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710068, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:36

Issue:3

Issue date:March 2007

Publication year:2007

Pages:548-551

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, China

Abstract:The characteristics of discrete sampling of CCD, which is a key part in image analysis, was studied. The influence on test caused by nonlinear, nonuniform responsivity, dark current and noise etc of CCD was analyzed. And the means of eliminating each factor were given. In high degree of accuracy OTF measuring equipment, some defective factor must be rectificated by software as well as CCD with broad dynamic range, linearity and high signal-to-noise ratio (SNR). The comparison experiments for 50 mm standard lens show that with the processing method, minus or plus 3% modulation transform function test precision can be achieved, and satisfy high degree of precision measuring.

Number of references:7

Database:Compendex

Accession number:20071710574601

Title:An adaptive lifted pyramid for image compression

Authors:Xiang, Jingbo (1); Su, Hongwu (3); Su, Xiuqin (1)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Xi'an, 710068, China; (2) Graduate School, Chinese Academy of Science, Beijing, 100080, China; (3) Guangdong Nortel Telecommunications, Equip-ment Co.Ltd., Guangzhou, 510275, China

Corresponding author:Xiang, J.(Xjb831@tom.com)

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

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:6279 PART 2

Monograph title:27th International Congress on High-Speed Photography and Photonics

Issue date:2007

Publication year:2007

Article number:627936

Language:English

ISSN:0277786X

CODEN:PSISDG

ISBN-10:0819463493

ISBN-13:9780819463494

Document type:Conference article (CA)

Conference name:27th International Congress on High-Speed Photography and Photonics

Conference date:September 17, 2006 - September 22, 2006

Conference location:Xi'an, China

Conference code:69475

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

Abstract:In this paper, an improved Laplacian pyramid is proposed. We introduced additional adaptive lifted steps in the Laplacian pyramid. Our pyramid is able to control efficiently the entropy of detail image. Hence, it provides improved coding performance when compared to the standard Laplacian pyramid. Simulation results show that coding gains of up to l dB for images when compared to the standard Laplaican pyramid, and the adaptive lifted Laplacian pyramid have significantly lower entropy values.

Number of references:8

Main heading:Image compression

Controlled terms:Adaptive optics - Image analysis - Laplace equation

Uncontrolled terms:Adaptive lifted - Laplaican pyramid

Classification code:741 Light, Optics and Optical Devices - 741.1 Light/Optics - 921.2 Calculus

Treatment:Theoretical (THR)

DOI:10.1117/12.725332

Database:Compendex

Accession number:20073310766860

Title:Research on the assessment of fusion image

Authors:Jing, Juan-Juan (0); Lu, Qun-Bo (0); Zhou, Jin-Song (0); Huang, Min (0)

Corresponding author:Jing, J.-J.(jjgrzlyx@163.com)

Corr. author affiliation:Xi'an Institute of Optics and Precision Mechanics, Chinese Acad. of Sci., Xi'an 710119, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:36

Issue:SUPPL.

Issue date:June 2007

Publication year:2007

Pages:313-317

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, 710068, China

Abstract:By fusing the IKONOS multi-band and pan image using several image fusion algorithms (IHS transform, PC transform, Gram-Schmidt transform and smoothing filter-based intensity modulation) and assessing the fusion image, indicates that qualitative comparison is too subjective, although many methods are provided for assessment when using quantitative methods, more bands and more methods should be used for their limitations, spectral curve comparison was the best method for appraising the result, spectral angle and geometry distance was introduced to appraise the spectral curve.

Number of references:7

Database:Compendex

Accession number:20074310890233

Title:Micro Fabry-Perot interferometers in silica fibers machined by femtosecond laser

Authors:Rao, Yun-Jiang (1); Deng, Ming (1); Duan, De-Wen (1); Yang, Xiao-Chen (1); Zhu, Tao (1); Cheng, Guang-Hua (3)

Author affiliation:(1) Key Lab. of Optoelectronic Technology and Systems (Education. Ministry of China), Chongqing University, Chongqing, 400044, China; (2) Key Lab. of Broadband Optical Fiber Transmiss. and Commun. Networks (Education Ministry of China), University of Electronic Science and Technology of China, Chengdu, Sichuan 610054, China; (3) State Key Lab. of Transient Optics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, Shanxi, 710068, China

Corresponding author:Rao, Y.-J.(yjrao@uestc.edu.cn)

Source title:Optics Express

Abbreviated source title:Opt. Express

Volume:15

Issue:21

Issue date:October 17, 2007

Publication year:2007

Pages:14123-14128

Language:English

E-ISSN:10944087

Document type:Journal article (JA)

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

Abstract:Micro Fabry-Perot (F-P) interferometers (MFPIs) are machined in a single-mode fiber (SMF) and a photonic crystal fiber (PCF) by using a near-infrared femtosecond laser, respectively. The strain and temperature characteristics of the two MFPIs with an identical cavity length are investigated and the experimental results show that the strain sensitivity of the PCF-based MFPI is smaller than that of the SMF-based MFPI due to their different waveguide structures, while the two MFPIs have close temperature sensitivities which are much smaller than that of an in-line SMF etalon sensor reported previously. These MFPIs in silica fibers are compact, stable, inexpensive, capable for mass-production and easy fabrication, offering great potentials for wide sensing applications. © 2007 Optical Society of America.

Number of references:17

Main heading:Fabry-Perot interferometers

Controlled terms:Fibers - Machining - Photonic crystals - Silica - Single mode fibers - Ultrashort pulses

Uncontrolled terms:Photonic crystal fibers (PCF) - Silica fibers

Classification code:941.3 Optical Instruments - 817 Plastics and Other Polymers: Products and Applications - 804.2 Inorganic Compounds - 744.1 Lasers, General - 741.3 Optical Devices and Systems - 741.1.2 Fiber Optics - 604.2 Machining Operations

Treatment:Theoretical (THR); Experimental (EXP)

DOI:10.1364/OE.15.014123

Database:Compendex

Accession number:20072710692423

Title:Research on feasibility of GEO target visual detection

Authors:Che, Chi-Cheng (0); Li, Ying-Cai (0); Chen, Rong-Li (0); Fan, Xue-Wu (0); Ma, Zhen (0)

Corresponding author:Che, C.-C.(checc@opt.ac.cn)

Corr. author affiliation:Xi'an Institute of Optics and Precision Mechanics, Chinese Acad. of Sci., Xi'an 710068, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:36

Issue:5

Issue date:May 2007

Publication year:2007

Pages:905-908

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, 710068, China

Abstract:Space debris is produced accidentally and deliberately while people are carrying out space activities and are no longer serving any function. It is the main pollution sources of the space environment. The space debris may stay in space for a long time and generate new smaller space debris because of its breakup caused by explosions and collision which then increase the threat to space vehicles, especially to manned space flights. Geosynchronous Earth Orbit (GEO) is the one and only orbit. Detecting the debris in GEO is necessary. Mathematics model of unilluminant space target in GEO is established. Based on the basic theory of radiation transmission, the relationships between lightness and detecting time and altitude are analyzed, and the relationships between detection ability and parameters of optics are demonstrated. The effect of stray light in system has been analyzed. The correctness of the model and formula are proved by test, so GEO target visual detection is feasible.

Number of references:9

Database:Compendex

Accession number:20075110983147

Title:Polarization properties measurement of polarization maintaining fiber based on wavelength-sweeping modulation

Authors:Wang, Han-Yi (1); Ren, Li-Yong (1); Zhang, Ya-Ni (3); Yao, Bao-Li (1); Zhao, Wei (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (2) Graduate School, Chinese Academy of Sciences, Beijing 100039, China; (3) Department of Physics, Baoji College of Arts and Science, Baoji 721007, China

Corresponding author:Wang, H.-Y.(hanyiw@sina.com.cn)

Source title:Guangdianzi Jiguang/Journal of Optoelectronics Laser

Abbreviated source title:Guangdianzi Jiguang

Volume:18

Issue:11

Issue date:November 2007

Publication year:2007

Pages:1336-1339

Language:Chinese

ISSN:10050086

CODEN:GUJIE9

Document type:Journal article (JA)

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

Abstract:We analyze the polarization properties of polarization maintaining fiber and its basic measurement principle. According to the dependence of the phase difference between the two orthogonally polarized modes HE<inf>11</inf>x and HE<inf>11</inf>y on the wavelength of the injected laser, the wavelength-sweeping modulation method is adopted to measure the beat length of the fiber. The beat length and polarization extinction ratio of the PANDA polarization maintaining fibers are investigated in detail. Theoretical and experimental results are consistent with each other and both of them indicate that this method has the advantage of high precision and it is easy to operate.

Number of references:11

Main heading:Optical fibers

Controlled terms:Birefringence - Electromagnetic wave polarization - Fibers - Polarization - Wavelength

Uncontrolled terms:Beat length - Polarization extinction ratio - Polarization maintaining fiber

Classification code:701.1 Electricity: Basic Concepts and Phenomena - 711 Electromagnetic Waves - 741.1.2 Fiber Optics - 819.4 Fiber Products

Treatment:Applications (APP); Experimental (EXP)

Database:Compendex

Accession number:20071710574622

Title:Analysis of the output impulse of PCSS triggered by femtosecond laser pulse

Authors:Jing, Zheng (1); Wang, Tao (1); Ruan, Chi (1); Wang, Jingwei (1); Hongchun, Yang (2); Li, Xiaoting (3); Leixue, Wu (1)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, CAS, Xi'an, 710068, China; (2) University of Electronic Science and Technology of China, Chengdu, 610054; (3) Science College, Chang'an University, Xi'an, 710061, China

Corresponding author:Jing, Z.

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

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:6279 PART 2

Monograph title:27th International Congress on High-Speed Photography and Photonics

Issue date:2007

Publication year:2007

Article number:62793T

Language:English

ISSN:0277786X

CODEN:PSISDG

ISBN-10:0819463493

ISBN-13:9780819463494

Document type:Conference article (CA)

Conference name:27th International Congress on High-Speed Photography and Photonics

Conference date:September 17, 2006 - September 22, 2006

Conference location:Xi'an, China

Conference code:69475

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

Abstract:In this article different experiments are carried out to exam some key elements that influence the performance of PCSS (Photoconductive semiconductor switches). The experiments include the bias voltage over the switch, the trigger pulse energy and position. From the results we got the relationship among the elements and the output impulses. The bias voltage controls the output linearly; the rise of trigger energy increase the export voltage but when the energy get over 280μJ this trend slow down and the export voltage go to a fixed value; different positions change the export voltage and the peak value appears at the area near the cathode. The results were analyzed and explanations were given. From the discussion we give the evidences in helping to explain the linear mode, and point out an efficient way to use the laser energy for PCSS. Some tests methods are introduced and will be done in the future.

Number of references:13

Main heading:Ultrashort pulses

Controlled terms:Bias voltage - Photoconducting devices - Semiconductor switches - Voltage control

Uncontrolled terms:Femto second triggers - Output impulses - Photoconductive semiconductor switches (PCSS) - Trigger pulse energy

Classification code:713 Electronic Circuits - 714.2 Semiconductor Devices and Integrated Circuits - 731.3 Specific Variables Control - 744.1 Lasers, General

Treatment:Theoretical (THR); Experimental (EXP)

DOI:10.1117/12.725331

Database:Compendex

Accession number:20073310766849

Title:Design of a TV tracking platform for quickly capture target and auto-tracking system

Authors:Tian, Yan (0); Cao, Jian-Zhong (0); Zhang, Bo-Heng (0); Xu, Zhao-Hui (0); Liu, Xiao-Ming (0); Liu, Ying (0)

Corresponding author:Tian, Y.(ty_cas@163.com)

Corr. author affiliation:Xi'an Institute of Optics and Precision Mechanics, Chinese Acad. of Sci., Xi'an 710119, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:36

Issue:SUPPL.

Issue date:June 2007

Publication year:2007

Pages:266-269

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, 710068, China

Abstract:In order to satisfy requirements of real-time and stability for the television tracker, a tracking television system based on DSP is introduced. Using the output characteristics of the analog video signal, the image of object and background acquisition in television field period is completed. FIFO also is used as an image buffer, and the interface between DSP and FIFO is designed in the system, which could make the image data read fast and calculate the object position.

Number of references:6

Database:Compendex

Accession number:20073110725402

Title:Epitaxial growth of SiC films at low temperature and its photoluminescence

Authors:Wu, Zhao (1); Zhang, Zhi-Yong (1); Deng, Zhou-Hu (3); Wang, Xue-Wen (3); Yan, Jun-Feng (3); Ni, Yun-Jiang (3)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Science, Shaanxi 710068, China; (2) Graduate University, Chinese Academy of Sciences, Beijing 100049, China; (3) School of Information Science and Technology, Northwest University, Shaanxi 710069, China

Corresponding author:Wu, Z.(zhao-wu@163.com)

Source title:ICSICT-2006: 2006 8th International Conference on Solid-State and Integrated Circuit Technology, Proceedings

Abbreviated source title:Int. Conf. Solid-State Integr. Circ. Technol. Proc.

Monograph title:ICSICT-2006: 2006 8th International Conference on Solid-State and Integrated Circuit Technology, Proceedings

Issue date:2007

Publication year:2007

Pages:932-934

Article number:4098281

Language:English

ISBN-10:1424401615

ISBN-13:9781424401611

Document type:Conference article (CA)

Conference name:ICSICT-2006: 2006 8th International Conference on Solid-State and Integrated Circuit Technology

Conference date:October 23, 2006 - October 26, 2006

Conference location:Shanghai, China

Conference code:70021

Publisher:Inst. of Elec. and Elec. Eng. Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States

Abstract:In this paper, our work on heteroepitaxial SiC films deposited on single-crystalline (111) silicon by hot filament chemical vapor deposition (HFCVD) at low temperature of 800°C is reported.The surface topography of SiC films on Si substrate were analyzed by Atomic Force Microscope (AFM). The characteristics and crystallinity of the SiC film were examined by X-ray Diffractometer (XRD) and Fourier Transform Infrared (FTIR).As can be seen in XRD spectrum, the peaks of Si (111), SiC (111) and SiC (222) appeared. And TO-phonon absorption peaks (804.95cm-1) of Si-C bonds also emerged in Fourier transform infrared spectra. In particular, intensive visible-light emitting at 411nm and 436nm has been observed at room temperature in photoluminescence experiments. © 2006 IEEE.

Number of references:9

Main heading:Thin films

Controlled terms:Atomic force microscopy - Chemical vapor deposition - Epitaxial growth - Photoluminescence - Silicon carbide - Surface topography - Thermal effects

Uncontrolled terms:Phonon absorption - Visible-light emitting - Wide band-gap semiconductor

Classification code:933.1.2 Crystal Growth - 931.2 Physical Properties of Gases, Liquids and Solids - 804.2 Inorganic Compounds - 802.3 Chemical Operations - 951 Materials Science - 802.2 Chemical Reactions - 741.1 Light/Optics - 714.2 Semiconductor Devices and Integrated Circuits - 641 Heat and Mass Transfer; Thermodynamics - 741.3 Optical Devices and Systems

Treatment:Theoretical (THR); Experimental (EXP)

DOI:10.1109/ICSICT.2006.306598

Database:Compendex

Accession number:20071710574552

Title:Drift magnitude surveying in launching and taking-off processes of a large means of delivery

Authors:Li, Jingzhen (1); Xiong, Rensheng (2); Wang, Hushun (2); Gong, Xiangdong (1)

Author affiliation:(1) Institute of Photonic Engineering, College of Electron Sci. and Tech., Shenzhen University, Shenzhen, 518060, China; (2) Xian Institute of Optics and Precision Mechanics, Academia Sinica, Xian, Shaanxi, 710068, China

Corresponding author:Li, J.(lijz@szu.edu.cn)

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

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:6279 PART 1

Monograph title:27th International Congress on High-Speed Photography and Photonics

Issue date:2007

Publication year:2007

Article number:62791P

Language:English

ISSN:0277786X

CODEN:PSISDG

ISBN-10:0819463493

ISBN-13:9780819463494

Document type:Conference article (CA)

Conference name:27th International Congress on High-Speed Photography and Photonics

Conference date:September 17, 2006 - September 22, 2006

Conference location:Xi'an, China

Conference code:69475

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

Abstract:This paper deals with the approaching surveying principle and data processing for launching and taking-off of a large means of delivery; moreover, the special requirements of the drift magnitude surveying optical system, the intermittent performance of the synchronous high speed camera, the high speed tracing and accurate measurement of angles, and the synchronous controlling, are also described. The approching survey means here the surveying range from the surveying facility to the launching tower is about 100m-200m.

Number of references:10

Main heading:High speed cameras

Controlled terms:Data processing - High speed photography - Launching - Optical systems - Takeoff

Uncontrolled terms:Approaching surveys - High speed tracing - Lateral drift magnitude

Classification code:652.1 Aircraft, General - 655.1 Spacecraft, General - 723.2 Data Processing and Image Processing - 741.3 Optical Devices and Systems - 742.1 Photography - 742.2 Photographic Equipment

Treatment:Theoretical (THR)

DOI:10.1117/12.725221

Database:Compendex

Accession number:20074710936109

Title:Multiwavelength oscillations of ytterbium-doped fiber laser

Authors:Zhu, Zong-Jiu (1); Sun, Qing (1); Liu, Xue-Ming (2); Mao, Qing-He (1)

Author affiliation:(1) Laser Technology Research Center, Anhui Institute of Optics and Fine Mechanics, Chinese Acad. of Sci., Hefei 230031, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Fine Mechanics, Chinese Acad. of Sci., Xi'an 710068, China

Corresponding author:Zhu, Z.-J.(fiber_optics@aiofm.ac.cn)

Source title:Zhongguo Jiguang/Chinese Journal of Lasers

Abbreviated source title:Zhongguo Jiguang

Volume:34

Issue:10

Issue date:October 2007

Publication year:2007

Pages:1333-1337

Language:Chinese

ISSN:02587025

CODEN:ZHJIDO

Document type:Journal article (JA)

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

Abstract:Multiwavelength oscillation of ytterbium-doped fiber ring laser is investigated with a Sagnac comb filter at room temperature and 77 K. The experimental results show that, at both room temperature and 77 K, the ytterbium-doped fiber (YDF) exhibits obviously inhomogeneous gain broadening, which results that the lasing line number of the laser increases with the increase of pump power. However, due to the homogeneous gain broadening of the YDF, the gain imhomogeneity of the YDF at room temperature is not strong enough to compensate the intrinsic unevenness of the YDF gain spectrum, leading to lasing wavelengths missing. Moreover, when the wavelength spacing decreases to 0.8 nm, the wavelength competition caused by the homogeneous gain broadening of the YDF decreases the stability of multiwavelength oscillations. At 77 K, however, the inhomogeneous gain broadening of the YDF becomes stronger. For a spacing of 0.8 nm, 32 stable lasing lines without any potential lasing wavelengths missing between neighboring wavelengths have been obtained.

Number of references:15

Main heading:Fiber lasers

Controlled terms:Energy conversion - Optical frequency conversion - Optical gain - Ytterbium

Uncontrolled terms:Homogeneous broadening - Inhomogeneous broadening - Multiwavelength oscillation - Ytterbium doped fiber

Classification code:525.5 Energy Conversion Issues - 741.1 Light/Optics - 744.4 Solid State Lasers

Treatment:Applications (APP); Experimental (EXP)

Database:Compendex

Accession number:20073310766800

Title:Development of measuring parameters system for high-power laser

Authors:Zhang, Fa-Quan (0); Liu, Hua (0); Chen, Liang-Yi (0); He, Jun-Hua (0)

Corresponding author:Zhang, F.-Q.(zhangfq@zzuli.edu.cn)

Corr. author affiliation:Xi'an Institute of Optics and Precision Mechanics, Chinese Acad. of Sci., Xi'an 710119, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:36

Issue:SUPPL.

Issue date:June 2007

Publication year:2007

Pages:68-71

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, 710068, China

Abstract:The method of measuring accurately energy and pulse time waveform of laser was studied in ICF experiment. A beam was introduced to the energy meter through attenuator. Analog signal from amplifier of the energy meter was input into 8098 single-chip processor after normalized and A/D converted. Data acquired was transferred to master console through the beam coupling communication network and the interface circuit. Another laser beam was changed into electric pulse by ultra-fast photodetectors and input the oscilloscope. Data acquired by the oscilloscope was transported to master console through GPIB bus and GPIB-LAN adapter AD007 by means of VISA language. Waveform parameters were extracted from pulse waveform data which was filtered by wavelet transform through self-adaptive algorithm.

Number of references:8

Database:Compendex

Accession number:20073410774781

Title:PZT film and Si substrate two-layer system patterning morphology by femtosecond pulsed laser

Authors:Xiao, Shizhou (1); Guo, Rui (1); Cheng, Guanghua (2); Wu, Yalei (1); Huang, Wenhao (1); Chu, Jiaru (1)

Author affiliation:(1) Precise Machinery and Precise Instrument Department, USTC, Hefei, 230026; (2) State Key Laboratory of Transient Optics Technology, Xi'an Institute of Optics and Precision Mechanism, Xi'an 710068

Corresponding author:Xiao, S.

Source title:Proceedings of the International Conference on Integration and Commercialization of Micro and Nanosystems 2007

Abbreviated source title:Proc. Int. Conf. Integr. Commer. Micro Nanosyst.

Volume:B

Monograph title:Proceedings of the International Conference on Integration and Commercialization of Micro and Nanosystems 2007

Issue date:2007

Publication year:2007

Pages:1309-1314

Language:English

ISBN-10:0791842657

ISBN-13:9780791842652

Document type:Conference article (CA)

Conference name:International Conference on Integration and Commercialization of Micro and Nanosystems 2007

Conference date:January 10, 2007 - January 13, 2007

Conference location:Sanya, Hainan, China

Conference code:70082

Sponsor:ASME The Nanotechnology Institute; Chinese Mechanical Engineering Society, CMES; Micro and Nanotechnol. Commer. and Educ. Found., MANCEF

Publisher:American Society of Mechanical Engineers, 3 Park Avenue, New York, NY 10016-5990, United States

Abstract:In this paper, a novel PZT film patterning method by femtosecond laser is proposed. The method is different from traditional dry-etching and wet-etching technology. Femtosecond laser microfabrication technology has several advantages such as high resolution, no mask direct-writing and seldom-heating, etc. A two-layer (PZT thin film and substrate) heating and ablating threshold model is built and the relationship of PZT/Si two-layer system micro ablation morphology depending on laser pulse energy is constructed. From the model and experiment data, we obtain the suitable energy region to pattern PZT film freely without damage Si substrate. A 3μm resolution of PZT pattern is achieved in our experiment. In order to verify the fabrication available of this technology, several micro functional devices are successfully patterned by optimized femtosecond pulsed laser energy and their function are detected. The results prove that the PZT patterning quality is good. Copyright © 2007 by ASME.

Number of references:15

Main heading:Thin films

Controlled terms:Dry etching - Laser pulses - Lithography - Mathematical models - Piezoelectric materials

Uncontrolled terms:Femtosecond laser microfabrication - Micro ablation morphology - Patterning method - PZT film

Classification code:708.1 Dielectric Materials - 714.2 Semiconductor Devices and Integrated Circuits - 744.1 Lasers, General - 802.2 Chemical Reactions - 921 Mathematics

Treatment:Theoretical (THR); Experimental (EXP)

DOI:10.1115/MNC2007-21186

Database:Compendex

Accession number:20080511071663

Title:Theoretical algorithm for position sensitive of wedge and strip anode detector

Authors:Miao, Zhen-Hua (1); Zhao, Bao-Sheng (1); Liu, Yong-An (1); Zhu, Xiang-Ping (1)

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

Corresponding author:Miao, Z.-H.(zhenhua_miao@hotmail.com)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:36

Issue:12

Issue date:December 2007

Publication year:2007

Pages:2215-2218

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

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

Abstract:It is proved that the relations among the area partitions of the wedge and strip are arithmetical by deducing the formula of coordinate for position sensitive of the wedge and strip anode detector. The effects of the two design parameters, the width of wedge bottom and the arithmetical coefficient of the strip width, on the detecting sensitivity are also analysed. The effect of capacitive coupling of the electrode capacitance on position sensitive is studied. On the condition of not affecting the resolution, the distortion arising from the capacitive coupling effect could be eliminated by adjusting the coordinate formula of the wedge and strip anode detector.

Number of references:6

Main heading:Boolean functions

Controlled terms:Architectural design - Detectors - Metallizing - Photoacoustic effect

Uncontrolled terms:(I ,J) conditions - Capacitive couplings - Design Parameters (DP) - Detecting sensitivity - Distortion (deformation) - Electrode capacitance - Position sensitive - Strip widths

Classification code:402 Buildings and Towers - 539.3 Metal Plating - 721.1 Computer Theory, Includes Formal Logic, Automata Theory, Switching Theory, Programming Theory - 741.1 Light/Optics - 914 Safety Engineering

Database:Compendex

Accession number:20071710574616

Title:Superresolution reconstruction of images by weighted wavelet bicubic interpolation search algorithm

Authors:Qu, You-Shan (1); Bian, Chuan-Ping (1); Li, Ying-Cai (1)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, CAS, Xi'an 710068, China

Corresponding author:Qu, Y.-S.(quyoushan@yahoo.com.cn)

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

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:6279 PART 2

Monograph title:27th International Congress on High-Speed Photography and Photonics

Issue date:2007

Publication year:2007

Article number:62793M

Language:English

ISSN:0277786X

CODEN:PSISDG

ISBN-10:0819463493

ISBN-13:9780819463494

Document type:Conference article (CA)

Conference name:27th International Congress on High-Speed Photography and Photonics

Conference date:September 17, 2006 - September 22, 2006

Conference location:Xi'an, China

Conference code:69475

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

Abstract:The variable relationship between the threshold of high-frequency extrapolation and the entropy of its correspondent reconstructed image in the Wavelet Bicubic Interpolation Algorithm is analyzed. The information entropy is used as a cost function and a Maximal Entropy Wavelet Bicubic Interpolation Search Algorithm is proposed. This algorithm can automatically search an extrapolation threshold to reconstruct an image with maximal entropy. Although the detail information of the reconstructed maximal entropy image is larger than its original image, it may introduce a lot of uncertain and incorrect information. In order to remedy this shortcoming of the proposed algorithm, a new cost function based on the old one is established. The new cost function can not only remedy the shortcoming of the entropy function as a cost function, but also a weight introduced in the new cost function can be adjusted to reconstruct different superresolution images to satisfy different practical requirements. Thus a Weighted Wavelet Bicubic Interpolation Search Algorithm is established. The experiment results prove that if the distribution of the processed images is close to the maximum likelihood distribution, a large weight will be selected to reconstruct a relative better superresolution image with better details, and if the distribution of the processed images is far from the maximum likelihood distribution, a little weight will be selected to reconstruct a relative better superresolution image with better visual effect. Therefore, the weight in the new algorithm can be selected from the requirements to satisfy different practical cases.

Number of references:7

Main heading:Image reconstruction

Controlled terms:Algorithms - Entropy - Interpolation - Serpentine - Signal to noise ratio - Wavelet transforms

Uncontrolled terms:Bicubic interpolation - Maximal entropy - Maximal Entropy Wavelet Bicubic Interpolation

Classification code:921.6 Numerical Methods - 921.3 Mathematical Transformations - 741 Light, Optics and Optical Devices - 723 Computer Software, Data Handling and Applications - 716.1 Information Theory and Signal Processing - 641.1 Thermodynamics - 482.2 Minerals

Treatment:Theoretical (THR)

DOI:10.1117/12.725362

Database:Compendex

Accession number:20073310766844

Title:Error analysis for measurement of encoder with shaft eccentricity

Authors:Zhao, Jian-Ke (0); Zhang, Zhou-Feng (0)

Corresponding author:Zhao, J.-K.(zjk@opt.ac.cn)

Corr. author affiliation:Xi'an Institute of Optics and Precision Mechanics, Chinese Acad. of Sci., Xi'an 710068, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:36

Issue:SUPPL.

Issue date:June 2007

Publication year:2007

Pages:249-252

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, 710068, China

Abstract:The principle and method for measuring the angle error of the encoder with polyhedron (with 23sides)and collimator tube are introduced. The measurement error is analyzed when the axis of the polyhedron can not accord with the axis of the encoder. The result shows the eccentricity orientation is also determined. By the experiment, the conclusion is drawn that the system error is mutative in a rule of sinusoid when there is a difference between the axes of the polyhedron and the encoder, and the axis location of the collimator tube does not affect the measurement of the angle error of the encoder.

Number of references:4

Database:Compendex

Accession number:20075010970332

Title:Optimization of multiple filamentation of femtosecond laser pulses in air using a pinhole

Authors:Hao, Zuo-Qiang (1); Zhang, Jie (1); Xi, Ting-Ting (1); Yuan, Xiao-Hui (1); Zheng, Zhi-Yuan (1); Lu, Xin (1); Yu, Ming-Young (4); Li, Yu-Tong (1); Wang, Zhao-Hua (1); Zhao, Wei (3); Wei, Zhi-Yi (1)

Author affiliation:(1) Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China; (2) Department of Physics, Shanghai Jiao Tong University, Shanghai 200240, China; (3) State Key Laboratory of Transient Optics Technology, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710068, China; (4) Theoretical Physics I, Ruhr-University Bochum, D-44780 Bochum, Germany

Corresponding author:Zhang, J.(jzhang@aphy.iphy.ac.cn)

Source title:Optics Express

Abbreviated source title:Opt. Express

Volume:15

Issue:24

Issue date:November 26, 2007

Publication year:2007

Pages:16102-16109

Language:English

E-ISSN:10944087

Document type:Journal article (JA)

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

Abstract:The robustness and prolongation of multiple filamentation (MF) for femtosecond laser propagation in air are investigated experimentally and numerically. It is shown that the number, pattern, propagation distance, and spatial stability of MF can be controlled by a variable-aperture on-axis pinhole. The random MF pattern can be optimized to a deterministic pattern. In our numerical simulations, we configured double filaments to principlly simulate the experimental MF interactions. It is experimentally and numerically demonstrated that the pinhole can reduce the modulational instability of MF and is favorable for a more stable MF evolution. © 2007 Optical Society of America.

Number of references:27

Main heading:Ultrashort pulses

Controlled terms:Computer simulation - Modulation - Optimization - Robustness (control systems) - Stability

Uncontrolled terms:Modulational instability - Multiple filamentation (MF) - Pinhole

Classification code:716 Telecommunication; Radar, Radio and Television - 723.5 Computer Applications - 731.1 Control Systems - 731.4 System Stability - 744.1 Lasers, General - 921.5 Optimization Techniques

Treatment:Theoretical (THR); Experimental (EXP)

DOI:10.1364/OE.15.016102

Database:Compendex

Accession number:20073310766791

Title:Analysis of propagation characteristic THz wave photonic crystal fiber

Authors:Cao, Xiang-Jie (0); Zou, Kuai-Sheng (0); Zhao, Wei (0); Li, Jian-Feng (0); Duan, Kai-Liang (0)

Corresponding author:Cao, X.-J.(caoxiangjie@126.com)

Corr. author affiliation:State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Acad. of Sci., Xi'an 710119, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:36

Issue:SUPPL.

Issue date:June 2007

Publication year:2007

Pages:35-37

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, 710068, China

Abstract:Single-mode cut-off frequency and zero dispersion frequency are analyzed using finite element method. It is found that the single-mode cut-off frequency decreases as the increase of air hole fraction, and zero dispersion frequency increases as the increase of air hole fraction. It is also found that the confinement loss decrease as the increase of the rings of air hole. The relation is thought to be useful for making terahertz photonic crystal fiber.

Number of references:10

Database:Compendex

Accession number:20074910959912

Title:Grey screening-photovoltaic soliton-induced waveguides

Authors:Lu, Ke-Qing (1); Yang, Yan-Long (1); Zhao, Wei (1); Zhang, Mei-Zhi (1); Yang, Yang (1); Zhang, Lei (1); Liu, Xue-Ming (1); Zhang, Yan-Peng (2)

Corresponding author:Lu, K.-Q.

Source title:Chinese Physics

Abbreviated source title:Chin. Phys.

Volume:16

Issue:11

Issue date:November 1, 2007

Publication year:2007

Pages:3423-3428

Language:English

ISSN:10091963

E-ISSN:17414199

CODEN:CHPHF4

Document type:Journal article (JA)

Publisher:Institute of Physics Publishing, Temple Back, Bristol, BS1 6BE, United Kingdom

Abstract:This paper shows that waveguides induced by grey screening-photovoltaic solitons are always single mode for all intensity ratios, which are the ratio between the peak intensity of the soliton and the dark irradiance. It finds that the confined energy near the centre of the grey soliton and the propagation constant of the guided mode increase monotonically with increasing intensity ratio. On the other hand, when the soliton greyness increases, the confined energy near the centre of the grey soliton and the propagation constant of the guided mode reduce monotonically. When the bulk photovoltaic effect is neglected for short circuits, these waveguides become waveguides induced by grey screening solitons. When the external bias field is absent, these waveguides become waveguides induced by grey photovoltaic solitons. © 2007 Chin. Phys. Soc. and IOP Publishing Ltd.

Number of references:18

Main heading:Waveguides

Controlled terms:Irradiation - Nonlinear optics - Photovoltaic effects - Short circuit currents - Wave propagation

Uncontrolled terms:Grey screening - Intensity ratios - Soliton waveguide

Classification code:622.2 Radiation Effects - 701.1 Electricity: Basic Concepts and Phenomena - 711 Electromagnetic Waves - 714.3 Waveguides - 741.1.1 Nonlinear Optics

Treatment:Theoretical (THR)

DOI:10.1088/1009-1963/16/11/046

Database:Compendex

Accession number:20074710937294

Title:New approach to moving target tracking based on improved SUSAN detector

Authors:Yan, Min-Qi (0); Tang, Hui-Jun (0); Zhang, Bian-Lian (0)

Corresponding author:Yan, M.-Q.(jerry@opt.ac.cn)

Corr. author affiliation:Xi'an Institute of Optics and Precision Mechanics, CAS, Xi'an 710119, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:36

Issue:10

Issue date:October 2007

Publication year:2007

Pages:1933-1938

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, 710068, China

Abstract:A new algorithm to measure the drift of rockets in the initial launching stage is presented and developed. It is designed to combine the improved SUSAN detector and the correlation. In this method, the corner detector is improved to detect the edge. Meanwhile, the direction of Gradient is recorded. After filter, the coordinates of corners are calculated accurately by using the edge pixels with special direction. The precision and the anti-noise performance is improved by this method. The results show that the precision reaches sub-pixel, with few mistake in detecting, and this algorithm is easy to realize for its less operations.

Number of references:11

Database:Compendex

Accession number:20071910594848

Title:Study of satellite SAR imagery location based on self-calibration direct linear transformation

Authors:Li, Li-Gang (0); You, Hong-Jian (0); Liu, Bo (0); Wu, Yi-Rong (0); Peng, Hai-Liang (0); Li, Feng (0); Hu, Yan-Feng (0)

Corresponding author:Li, L.-G.(li_gli@126.com)

Corr. author affiliation:Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710068, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:36

Issue:3

Issue date:March 2007

Publication year:2007

Pages:543-547

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, China

Abstract:The satellite SAR imagery was regarded as an image which was acquired from the multi-center projection sensor approximately based on photogrametry theory. The satellite SAR collinearity equation was revised and the self-calibration direct linear transformation model for satellite SAR was proposed. As an example, the RadarSat imagery was tested. Experiment result demonstrates that the new model formulation is simple and the resolution is stable without any orbit ephemeris and imaging parameters, and location accuracy can also reach pixels. So self-calibration direct linear transformation model of satellite SAR can be applied in practice.

Number of references:8

Database:Compendex

Accession number:20073410776275

Title:Influence of velocity-height ratio of satellite on the TDICCD camera

Authors:Fan, Chao (1); Li, Ying-Cai (1); Yi, Hong-Wei (1)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710068, China

Corresponding author:Fan, C.

Source title:Binggong Xuebao/Acta Armamentarii

Abbreviated source title:Binggong Xuebao

Volume:28

Issue:7

Issue date:July 2007

Publication year:2007

Pages:817-821

Language:Chinese

ISSN:10001093

CODEN:BIXUD9

Document type:Journal article (JA)

Publisher:China Ordnance Society, P.O. Box 2431, Beijing, 100081, China

Abstract:In the high-resolution satelliteborne remote sensing TDICCD camera, angular velocity of the image is changed with variation of the velocity-height ratio (v/H) of the satellite, and the image quality of camera is deteriorated seriously. Thus, the variation rule of the v/H was studied at the imaging of satelliteborne TDICCD camera. Influence of v/H on the image quality was studied from two variations of imaged ground scenery latitude and TDICCD camera scroll angle. The interval of regulation of the row integration time and the range of the scroll angle at the imaging were computed based on the given orbital parameters. The effect of the field of view on the image quality was finally analyzed.

Number of references:5

Main heading:Image quality

Controlled terms:Cameras - Imaging techniques - Instruments - Remote sensing - Satellites

Uncontrolled terms:Field of view - Image motion - Time delay integration charge couple device (TDICCD) - Velocity height ratio

Classification code:655.2 Satellites - 731.1 Control Systems - 741 Light, Optics and Optical Devices - 742.2 Photographic Equipment - 941 Acoustical and Optical Measuring Instruments

Treatment:Applications (APP)

Database:Compendex

Accession number:20072210628364

Title:Experimental study on three dimensional optical data storage in LiF : F2

Authors:Yu, Juan (0); Cheng, Guang-Hua (0); Wang, Yi-Shan (0); Chen, Guo-Fu (0); Zhao, Wei (0); Hou, Xun (0)

Corresponding author:Yu, J.(yujuanwxf@163.com)

Corr. author affiliation:State Key Laboratory of Transient Optics and Photonic, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710068, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:36

Issue:4

Issue date:April 2007

Publication year:2007

Pages:627-630

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, China

Abstract:Based on the conversion of F2 centers to F3+ centers using IR pulse laser in LiF : F2 crystal and the difference of fluorescence spectrum in the two centers, the principle experiment of three dimensional optical data storage was realized using multi-photons absorption writing technique and fluorescence confocal reflection readout. Using NA 0. 68 objective to focus on chirped amplified femtosecond laser pulse at 800 nm, 100 fs, 1 kHz inside LiF : F2 crystal, writing in 3D was done successfully by moving crystal; fast and non-destroy reflectional confocal data reading was operated by using 405 nm blue laser and detecting 540 nm fluorescence produced by F3+ centers. Compared with transmission confocal dispersion and phase contract read-out, this optical setup can be compatible with existent optical disc technology, and the structure is simple. The most important thing is that information recorded depends on the change of fluorescence rather than that of refractive index, so it is potential to achieve hundreds of layers readout.

Number of references:17

Database:Compendex

Accession number:20073610799989

Title:Large depth-of-view portable three-dimensional laser scanner and its segmental calibration for robot vision

Authors:Li, Jianfeng (1); Guo, Yongkang (1); Zhu, Jianhua (1); Lin, Xiangdi (1); Xin, Yao (1); Duan, Kailiang (2); Tang, Qing (1)

Author affiliation:(1) Department of Physics, Institute of Nano Optics, Sichuan University, 24, South Section 1, Yihuan Road, Chengdu, Sichuan 610064, China; (2) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, 710119, China

Corresponding author:Li, J.(lijianfeng3000@sina.com.cn)

Source title:Optics and Lasers in Engineering

Abbreviated source title:Opt Lasers Eng

Volume:45

Issue:11

Issue date:November 2007

Publication year:2007

Pages:1077-1087

Language:English

ISSN:01438166

CODEN:OLENDN

Document type:Journal article (JA)

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

Abstract:A portable 3D laser scanning system has been designed and built for robot vision. By tilting the charge coupled device (CCD) plane of portable 3D scanning system according to the Scheimpflug condition, the depth-of-view is successfully extended from less than 40 to 100 mm. Based on the tilted camera model, the traditional two-step camera calibration method is modified by introducing the angle factor. Meanwhile, a novel segmental calibration approach, i.e., dividing the whole work range into two parts and calibrating, respectively, with corresponding system parameters, is proposed to effectively improve the measurement accuracy of the large depth-of-view 3D laser scanner. In the process of 3D reconstruction, different calibration parameters are used to transform the 2D coordinates into 3D coordinates according to the different positions of the image in the CCD plane, and the measurement accuracy of 60 μ m is obtained experimentally. Finally, the experiment of scanning a lamina by the large depth-of-view portable 3D laser scanner used by an industrial robot IRB 4400 is also employed to demonstrate the effectiveness and high measurement accuracy of our scanning system. © 2007 Elsevier Ltd. All rights reserved.

Number of references:24

Main heading:Scanning

Controlled terms:Calibration - CCD cameras - Computer vision - Image reconstruction - Laser optics - Portable equipment - Robotics - Three dimensional computer graphics

Uncontrolled terms:3D reconstruction - Camera calibration - Depth-of-view - Portable 3D laser scanning systems - Scheimpflug condition - System parameters

Classification code:902.2 Codes and Standards - 741.3 Optical Devices and Systems - 741.2 Vision - 741.1 Light/Optics - 731.5 Robotics - 723.2 Data Processing and Image Processing - 714.2 Semiconductor Devices and Integrated Circuits

Treatment:Theoretical (THR)

DOI:10.1016/j.optlaseng.2007.05.006

Database:Compendex

Accession number:20072310642817

Title:Parameters measurement of 100 keV gyral electron beam

Authors:Zhao, Jun-Ping (1); Tian, Jin-Shou (1); Bai, Yong-Lin (1); Liu, Bai-Yu (1); Ouyang, Xian (1); Yang, Wen-Zheng (1); Bai, Xiao-Hong (1); Huang, Lei (1)

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

Corresponding author:Zhao, J.-P.(chiefscholar@hotmail.com)

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

Abbreviated source title:Qiangjiguang Yu Lizishu

Volume:19

Issue:3

Issue date:March 2007

Publication year:2007

Pages:487-490

Language:Chinese

ISSN:10014322

CODEN:QYLIEL

Document type:Journal article (JA)

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

Abstract:Charge density distribution of the large-orbit hollow beam, which is applied to a Gyro-TWA, is obtained from time-integrated image. The image is created by a phosphor scintillator on the cross section vertical to the transmission axial. Comparison of average beam radius, beam pitch angle obtained from the images and from computer simulations and the differences were analyzed. The experimental results are consistent with the simulated ones and significant for the debugging of the Gyro-TWA using this gyral electron beam.

Number of references:13

Main heading:Electron beams

Controlled terms:Charge density - Gyrotrons - Magnetic field effects - Scintillation

Uncontrolled terms:CSDA range - Electron beam pitch angle - Electron beam radius - Gyral electron beam

Classification code:701.1 Electricity: Basic Concepts and Phenomena - 701.2 Magnetism: Basic Concepts and Phenomena - 714.1 Electron Tubes - 931.3 Atomic and Molecular Physics

Treatment:Applications (APP); Experimental (EXP)

Database:Compendex

Accession number:20073110717249

Title:Detection of small infrared targets based on multi-feature fusion

Authors:Lou, Yue (1); Wang, Zhi-Cheng (3); Li, Xin (2)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710068, China; (2) Systems Engineering Research Institute, China State Shipbuilding Corporation, Beijing 100036, China; (3) Key Laboratory of State Education Commission for Image Processing and Intelligent Control, Huazhong University of Science and Technology, Wuhan 430074, China

Corresponding author:Lou, Y.(louy2000@yahoo.com)

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

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

Volume:36

Issue:3

Issue date:June 2007

Publication year:2007

Pages:X395-397+411

Language:English

ISSN:10072276

Document type:Journal article (JA)

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

Abstract:A novel method for small weak target detection based on multi -feature distance map (MFDM) in image sequences is proposed. Small weak targets have many features like local entropy, average gradient strength etc. These features not only describe the characteristics of small infrared targets, but also are easy to be extracted. Multi-feature-based fusion techniques are applied to detect weak targets by converting the problem of detecting small targets to the search for peak values in specified feature space where multi -feature vectors space (MFVS) is considered. Target detection is performed in DM which can be derived according to feature vectors. The targets are detected in complex backgrounds via binarizing a DM image constructed by multi -feature fusion. The proposed approach is validated using actual infrared image sequences with sea-sky backgrounds. Experimental results demonstrate the robustness and high performance of the proposed method.

Number of references:11

Main heading:Image recognition

Controlled terms:Image fusion - Infrared radiation - Problem solving - Robustness (control systems)

Uncontrolled terms:Distance map - Fusion detection - Multi-feature vector space

Classification code:716 Telecommunication; Radar, Radio and Television - 723.2 Data Processing and Image Processing - 723.4 Artificial Intelligence - 731.1 Control Systems - 741.1 Light/Optics

Treatment:Theoretical (THR)

Database:Compendex

Accession number:20073810818556

Title:Real-time data processing of interferential imaging spectrometer based on FPGA

Authors:Yin, Shi-Min (1); Xiangli, Bin (1); Zhou, Jin-Song (1); Huang, Min (1)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Academy of Sciences of China, Xi'an 710068, China; (2) First Field of Trial and Training Air Base of the Chinese People's Liberation Army, Jiuquan 735018, China

Corresponding author:Yin, S.-M.

Source title:Hongwai Yu Haomibo Xuebao/Journal of Infrared and Millimeter Waves

Abbreviated source title:Hongwai Yu Haomibo Xuebao

Volume:26

Issue:4

Issue date:August 2007

Publication year:2007

Pages:274-278

Language:Chinese

ISSN:10019014

CODEN:HHXUEZ

Document type:Journal article (JA)

Publisher:Chinese Optical Society, 420 Zhong Shan Bei Yi Road, Shanghai, 200083, China

Abstract:Based on the data processing technologies of interferential spectrometer, a sort of real-time data processing system on chip of interferential imaging spectrometer was studied based on large capacitance and high speed field programmable gate array (FPGA) device. The system integrates both interferogram sampling and spectrum rebuilding on a single chip of FPGA and makes them being accomplished in real-time with advantages such as small cubage, fast speed and high reliability. It establishes a good technical foundation in the applications of imaging spectrometer on target detection and recognition in real-time.

Number of references:7

Main heading:Imaging techniques

Controlled terms:Data processing - Fast Fourier transforms - Field programmable gate arrays (FPGA) - Real time systems - Spectrometers

Uncontrolled terms:Imaging spectrometer - Interferogram sampling - Spectrum rebuilding

Classification code:721.3 Computer Circuits - 723.2 Data Processing and Image Processing - 921.3 Mathematical Transformations - 941.3 Optical Instruments

Treatment:Applications (APP); Experimental (EXP)

Database:Compendex

Accession number:20071410529853

Title:Study on wide FOV reflective optical system

Authors:Liu, Bu (0); Fan, Xue-Wu (0); Qu, You-Shan (0); Che, Rong-Li (0)

Corresponding author:Liu, B.(liubu0721@163.com)

Corr. author affiliation:Xi'an institute of Precision Optics and Mechanics, CAS, Xi'an 710068, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:36

Issue:1

Issue date:January 2007

Publication year:2007

Pages:81-83

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, China

Abstract:On the basic principles of optical design, a wide-field three-mirror-reflective optical system is designed from the Schwarzschild system. The optical system is comprised by two spherical reflective mirrors and one aspheric mirror. Good performance can be achieved among a wide strip field (22° × 11°)at the frequency 50 lp/mm. It can be used in ultraviolet optical systems.

Number of references:15

Database:Compendex

Accession number:20083811564066

Title:A 355 TW femtosecond Ti:sapphire laser facility with three stage amplifiers

Authors:Wang, Zhaohua (1); Wei, Zhiyi (1); Zhang, Jie (1); Wang, Peng (1); Ling, Weijun (2); Zhu, Jiangfeng (1); Tian, Jinrong (1)

Author affiliation:(1) Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China; (2) Xian Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xian 710068, China

Corresponding author:Wang, Z.

Source title:Conference on Quantum Electronics and Laser Science (QELS) - Technical Digest Series

Abbreviated source title:Conf Quant Electron Laser Sci QELS Tech Dig Ser

Monograph title:2007 Quantum Electronics and Laser Science Conference, QELS

Issue date:2007

Publication year:2007

Article number:4431497

Language:English

ISBN-10:1557528349

ISBN-13:9781557528346

Document type:Conference article (CA)

Conference name:2007 Quantum Electronics and Laser Science Conference, QELS

Conference date:May 6, 2007 - May 11, 2007

Conference location:Baltimore, MD, United states

Conference code:73233

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

Abstract:A compact femtosecond Ti:sapphire laser facility with three stage amplifiers was developed. By eliminating ASE and shaping spectrum, we generated 11J laser pluse at duration of 31fs, which corresponds to peak power of about 355TW. ©OSA.

Number of references:2

Main heading:Lasers

Controlled terms:Amplifiers (electronic) - Corundum - Power spectrum - Quantum electronics - Sapphire

Uncontrolled terms:Femto seconds - Three-stage amplifiers - Ti: Sapphire lasers

Classification code:931.4 Quantum Theory; Quantum Mechanics - 921 Mathematics - 812.2 Refractories - 751.1 Acoustic Waves - 744.1 Lasers, General - 941 Acoustical and Optical Measuring Instruments - 744 Lasers - 711 Electromagnetic Waves - 606.1 Abrasive Materials - 482.2.1 Gems - 482.2 Minerals - 713.1 Amplifiers

DOI:10.1109/QELS.2007.4431497

Database:Compendex

Accession number:20072110613734

Title:Deposition of SiC thin film and its photosensitive characteristics

Authors:Zhao, Wu (1); Deng, Zhouhu (3); Yan, Junfeng (3); Zhang, Zhiyong (1)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Science, Xi'an 710068, China; (2) Graduate University, Chinese Academy of Sciences, Beijing 100049, China; (3) School of Information Science and Technology, Northwest University, Xi'an 710069, China

Corresponding author:Zhao, W.(zhaowu@nwu.edu.cn)

Source title:Huazhong Keji Daxue Xuebao (Ziran Kexue Ban)/Journal of Huazhong University of Science and Technology (Natural Science Edition)

Abbreviated source title:Huazhong Ligong Daxue Xuebao

Volume:35

Issue:SUPPL. 1

Issue date:March 2007

Publication year:2007

Pages:37-40

Language:Chinese

ISSN:16714512

Document type:Journal article (JA)

Publisher:Huazhong University of Science and Technology, Yujiashan, 430074, China

Abstract:Silicon carbide thin films were deposited on monocrystalline silicon polished wafer substrate by hot filament chemical vapor deposition (HFCVD) in mixed gases of CH<inf>4</inf>, SiH<inf>4</inf> and H<inf>2</inf>. Fourier infrared spectrum (FTIR) and X-ray diffraction (XRD) were performed to study structure properties of the thin films. The surface micrographies of the films were analyzed by atomic force microscope (AFM). In addition, photosensitivity characteristics of SiC thin films were also investigated at room and high temperature (410°C), respectively. The results show that the films are indeed SiC and there is certain photosensitivity for the SiC films in different wavelength and light power conditions and its photosensitive performance is almost identical at room and high temperature, which indicates that SiC thin films will have a good potential application for high temperature photosensitive sensor.

Number of references:12

Main heading:Thin films

Controlled terms:Bioelectric potentials - Chemical vapor deposition - Infrared radiation - Microscopes - Photosensitivity - Silicon carbide - Wavelength - X ray diffraction

Uncontrolled terms:Hot filament chemical vapor deposition (HFCVD) - SiC thin film

Classification code:933.1.1 Crystal Lattice - 813.1 Coating Techniques - 812.2 Refractories - 753.1 Ultrasonic Waves - 741.1 Light/Optics - 714.2 Semiconductor Devices and Integrated Circuits - 701.1 Electricity: Basic Concepts and Phenomena

Treatment:Applications (APP); Experimental (EXP)

Database:Compendex

Accession number:20072710692429

Title:Computer image measure method for parameter of explosion process

Authors:Wang, Feng (0); Wang, Jian (0)

Corresponding author:Wang, F.(Mapledelta@163.com)

Corr. author affiliation:Xi'an Institute of Optics and Precision Mechanics, Chinese Acad. of Sci., Xi'an 710068, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:36

Issue:5

Issue date:May 2007

Publication year:2007

Pages:930-932

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, 710068, China

Abstract:A measuremental method of explosion speed and explosion time based on computer image processing engine is introduced. The characteristics of the image of explosion time and explosion speed are analysed. Arithmetic of withdrawing characteristic point from image are introduced and automatic computer measurement of the explosion speed and explosion time are given. Experiments show that the automatic measurement is credibility and accuracy.

Number of references:7

Database:Compendex

Accession number:20073310766843

Title:Research of cushioning system for vehicular photoelectric transit

Authors:Zhou, Jing-Shu (0); Liu, Zhao-Hui (0); Xu, Feng (0)

Corresponding author:Zhou, J.-S.(zhoujing3014@163.com)

Corr. author affiliation:Xi'an Institute of optics and Precision Mechanics, Chinese Acad. of Sci., Xi'an 710119, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:36

Issue:SUPPL.

Issue date:June 2007

Publication year:2007

Pages:244-248

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, 710068, China

Abstract:A method of cushioning system based on eight steel wire shock absorbers and a strengthening mechanism for the vehicular photoelectric transit, which was for reducing the influence of the vibration and shock and in this condition, has been proposed. Through analyzing the mathematical model of the shock absorption system, the relationship of the excitory input displacement of the vehicle and the output acceleration of the transit has been established. For verifying the practicability of this shock absorbing method, the cushioning system was installed on a 15 tons wagon truck, which was running on the sand-gravel surface at a speed of 30 km/h. The results of the tests indicate that the output vibratory acceleration of the transit is less than 0.5 g, and the shock acceleration is less than 2.8 g.

Number of references:6

Database:Compendex

Accession number:20073410777720

Title:Calibration of camera system of TV theodolite

Authors:Zhou, Si-Zhong (0); Yang, Xiao-Xu (0); Guo, Zhi-Li (0)

Corresponding author:Zhou, S.-Z.(szh@opt.ac.cn)

Corr. author affiliation:Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710068, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:36

Issue:7

Issue date:July 2007

Publication year:2007

Pages:1369-1372

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, 710068, China

Abstract:The important parameters of camera system of TV theodolite have gotten with itself azimuth and pitching angle measure function. Camera focus can be measured through changing a little angle with constant target. Image center was gotten through comparing distances of target points in image because of symmetry of lens distortion. Through moving azimuth and pitching angle a distortion net of whole image was built. Then distortion model was set up with different models.

Number of references:9

Database:Compendex

Accession number:20080211012721

Title:Coaxiality measurement method based on revising aberration

Authors:Wu, Guo-Jun (1); Yan, Ya-Dong (1); Cang, Yu-Ping (1); Wu, Ling-Ling (1); Chen, Liang-Yi (1)

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

Corresponding author:Wu, G.-J.(wuguojun@opt.ac.cn)

Source title:Guangxue Jingmi Gongcheng/Optics and Precision Engineering

Abbreviated source title:Guangxue Jingmi Gongcheng

Volume:15

Issue:11

Issue date:November 2007

Publication year:2007

Pages:1712-1720

Language:Chinese

ISSN:1004924X

CODEN:GJGOF4

Document type:Journal article (JA)

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

Abstract:In order to realize synthetic coaxiality measurement for position deviations and angle deviations simultaneously, a laser beam-spot receiver system consisting of a receiver lens, beam splitter prisms, and CCD based on laser collimation was established. The triangular relationship among the lens optical axis, laser beam axis, and CCD was used to calculate those two deviations. In addition, a calculation method for obviously reducing the effect of lens' error on optical aberration was presented. The theoretical and experimental data indicate that, for a system with position measurement range of ±10 mm, angle measurement range of ±2°, the receiver lens' focal length of 50 mm, and the CCD's size is 1.6 cm, the position measurement accuracy is 0.02 mm and the angle measurement accuracy is 9.5″. As a result, this system can meet the requirement of coaxiality measurement in lots of mechanical devices.

Number of references:16

Main heading:Light measurement

Controlled terms:Aberrations - Angle measurement - Calculations - Charge coupled devices - Laser beams - Optical beam splitters - Optical collimators - Position measurement - Ray tracing

Uncontrolled terms:Angle deviation - Beam splitter prisms - Laser collimation - Position deviation - Receiver lens

Classification code:741.1 Light/Optics - 741.3 Optical Devices and Systems - 921 Mathematics - 941.4 Optical Variables Measurements - 943.2 Mechanical Variables Measurements

Treatment:Experimental (EXP)

Database:Compendex

Accession number:20080511071665

Title:Design and experiment on a triode field emission display prototype based on carbon nanotubes

Authors:Tian, Jin-Shou (1); Bai, Yong-Lin (1); Liu, Bai-Yu (1); Ouyang, Xian (1); Bai, Xiao-Hong (1); Yang, Wen-Zheng (1); Liu, Hu-Lin (1); Chen, Zheng-Kai (1); Qin, Jun-Jun (1); Ren, Zhao-Yu (2); Xu, Bei-Lei (3)

Author affiliation:(1) State Key Lab. of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, CAS, Xi'an 710119, China; (2) Institute of Photonics, Northwest University, Xi'an 710068, China; (3) Microelectronic Institute, Xidian University, Xi'an 710071, China

Corresponding author:Tian, J.-S.(tianjs@opt.ac.cn)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:36

Issue:12

Issue date:December 2007

Publication year:2007

Pages:2223-2226

Language:English

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

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

Abstract:A large-area, full-colored field emission display panel prototype based upon carbon-nanotube emitters is proposed. Its cathode and gate are on the same plane. The experiment shows that the emission efficiency of this display device can reach to 29.3%, which is well consistent with the results of the theoretic simulation. The trench between the cathode and gate was etched by laser beam. The carbon nanotube polymer used as field emitter is formed by water bath. Results of the simple structure and fabrication process can lead the triode structure display to practical applications.

Number of references:13

Main heading:Carbon nanotubes

Controlled terms:Architectural design - Carbon - Cubic boron nitride - Display devices - Experiments - Field emission - Field emission cathodes - Field emission displays - Fullerenes - Laser beams - Lead - Nanocomposites - Nanopores - Nanostructured materials - Nanostructures - Nanotechnology - Nanotubes - Offshore oil well production - Pulsed laser deposition - Triodes

Uncontrolled terms:AND gates - Display panels - emission efficiencies - Fabrication processes - field emitters - large areas - nano tube - nanotube emitters - Practical applications - simple structures - triode structures - water baths

Classification code:812.1 Ceramics - 804 Chemical Products Generally - 761 Nanotechnology - 744.9 Laser Applications - 744.8 Laser Beam Interactions - 901.3 Engineering Research - 722.2 Computer Peripheral Equipment - 712.1 Semiconducting Materials - 546.1 Lead and Alloys - 511.1 Oil Field Production Operations - 402 Buildings and Towers - 714.1 Electron Tubes

Database:Compendex

Accession number:20072710692426

Title:Microstress installation and experiment result of the interferometer

Authors:Li, Xia (0); Yuan, Yan (0); Zhao, Jian-Ke (0)

Corresponding author:Li, X.(lixia@opt.ac.cn)

Corr. author affiliation:Xi'an Institute of Optics and Precision Mechanics, Chinese Acad. of Sci., Xi'an 710068, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:36

Issue:5

Issue date:May 2007

Publication year:2007

Pages:918-921

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, 710068, China

Abstract:A microstress method for installation of the spatial modulated image spectrometer was theoretically and experimentally studied. A subsystem-interferometer subassembly as a part in the imaging spectrometer was designed. In the subassembly, ZTC4 and XM31 were used to protect the interferometer from destroying during the process of installation and transportation. Two parts made by the same material as the interferometer were added to interferometer as the installation surface. The results of dynamics analysis and experiment are also given. By this way no strain is produced and the space environment can be endured by the whole spatially modulated imaging spectrometer.

Number of references:9

Database:Compendex

Accession number:20072110607146

Title:Characteristic of the ultra-wideband electromagnetic radiation generated by PCSS

Authors:Ruan, Chi (1); Zhao, Wei (1); Chen, Guo-Fu (1); Zhu, Shao-Lan (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 Province 710068, China

Corresponding author:Ruan, C.

Source title:Microwave and Optical Technology Letters

Abbreviated source title:Microwave Opt Technol Lett

Volume:49

Issue:5

Issue date:May 2007

Publication year:2007

Pages:1118-1122

Language:English

ISSN:08952477

CODEN:MOTLEO

Document type:Journal article (JA)

Publisher:John Wiley and Sons Inc., P.O.Box 18667, Newark, NJ 07191-8667, United States

Abstract:A novel ultra-wideband electromagnetic pulse generating method based on the photoconductive semiconductor switches (PCSS) is presented. Gallium arsenide is used to develop the PCSS for an ultra-short electromagnetic pulse source. The pulse generated by such PCSS is within picosecond (ps) time scale, and can yield power pulse with an voltage over 10 kV. The experimental results show that the pulses are stable, with the peak-peak amplitude change of 6% and the time jitter within several picoseconds. The radiations of the PCSS triggered by the picosecond laser and femtosecond laser pulse series illustrate that the electromagnetic pulses would have high repetition of more than 80 MHz and frequency bandwidth of DC-6 GHz. The radiations of "lock-on" mode of the PCSS are also analyzed here. © 2007 Wiley Periodicals, Inc.

Number of references:9

Main heading:Electromagnetic waves

Controlled terms:Bandwidth - Electric potential - Jitter - Photoconductivity - Semiconductor switches - Ultrashort pulses

Uncontrolled terms:Electromagnetic pulses - Frequency bandwidth - Lock-on - PCSS

Classification code:701.1 Electricity: Basic Concepts and Phenomena - 711 Electromagnetic Waves - 714.2 Semiconductor Devices and Integrated Circuits - 716.1 Information Theory and Signal Processing - 741.1 Light/Optics - 744.1 Lasers, General

Treatment:Theoretical (THR); Experimental (EXP)

DOI:10.1002/mop.22393

Database:Compendex

Accession number:20072310642647

Title:Mechanical analysis on beryllium rotating mirror of ultra-high speed camera

Authors:Huang, Hong-Bin (1); Chai, Jin-Long (1); Li, Jing-Zhen (2); Gong, Xiang-Dong (2); Sun, Feng-Shan (3); He, Tie-Feng (2)

Author affiliation:(1) College of Mechatronics and Control Engineering, Shenzhen University, Shenzhen 518060, China; (2) College of Electronics Science and Technology, Shenzhen University, Shenzhen 518060, China; (3) Xi'an Institute of Optics and Precision Mechanics, Academia Sinica, Xi'an 710068, China

Corresponding author:Huang, H.-B.(huanghb@szu.edu.cn)

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

Abbreviated source title:Shenzhen Daxue Xuebao (Ligong Ban)

Volume:24

Issue:2

Issue date:April 2007

Publication year:2007

Pages:122-126

Language:Chinese

ISSN:10002618

Document type:Journal article (JA)

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

Abstract:The methods of numerical analysis for the strength and modal of rotating mirrors were presented based respectively on the three-dimensional elastic mechanics and dynamics. On strength computation, the finite element models of rotating mirror were established according to the real structure of the mirror, and the rotating three-faced beryllium mirror were analysed. Results display that the surface deformation magnitude of the mirror is approximately 0.3346 μm, and the maximum stress is 0.204 GPa at 600 m/s of edge linear speed. The regions of maximum stress are on the axial hole and symmetric to symmetrical planes of mirror body, and keep beelines to surfaces. On the modal analysis, the results show that the first and second modals of bending vibration exist around 3.4 × 105 r/min and 6.6 × 105 r/min, which appear binate and orthogonal respectively, and another modal belongs to the first torsional vibration that occurs by 5.13 × 105 r/min. Analysis indicates that endurance failure by resonances plays vital role for mirror failure rather than static load by body force if manufacturing defects are of nonexistence.

Number of references:8

Main heading:High speed cameras

Controlled terms:Bending (deformation) - Beryllium - Dynamic mechanical analysis - Dynamics - Elasticity - Finite element method - Mirrors - Modal analysis - Numerical analysis - Stresses - Surface analysis - Three dimensional - Vibrations (mechanical)

Uncontrolled terms:Rotating three faced beryllium mirror - Surface deformation magnitude - Surface structural strength - Ultra high speed camera

Classification code:951 Materials Science - 931.2 Physical Properties of Gases, Liquids and Solids - 931.1 Mechanics - 921.6 Numerical Methods - 902.1 Engineering Graphics - 742.2 Photographic Equipment - 741.3 Optical Devices and Systems - 542.1 Beryllium and Alloys - 421 Strength of Building Materials; Mechanical Properties

Treatment:Applications (APP)

Database:Compendex

Accession number:20071910594369

Title:Simple realization of switchable two-wavelength Yb-fiber and Er/Yb-fiber hybrid laser

Authors:Zhong, Lan-Xiang (1); Li, Jian-Lang (3)

Author affiliation:(1) College of Information Science and Technology, Northwest University, Xi'an 710069, China; (2) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710068, China; (3) Institute for Laser Science, University of Electro-Communications, Tokyo 182-8585, Japan

Corresponding author:Zhong, L.-X.(lan_xiang@263.sina.com)

Source title:Zhongguo Jiguang/Chinese Journal of Lasers

Abbreviated source title:Zhongguo Jiguang

Volume:34

Issue:3

Issue date:March 2007

Publication year:2007

Pages:345-349

Language:Chinese

ISSN:02587025

CODEN:ZHJIDO

Document type:Journal article (JA)

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

Abstract:The bistable feature of unabsorbed pump in pump-bypassed Yb-doped fiber (YDF) laser offers a possibility to pump the Er/Yb co-doped fiber (EYDF) in a bifurcated cavity. By this way, the lasing of the second lasing line is in a switching mode with that of 1040 nm lasing line. In this paper the wavelength-switchable lasing of 1040-nm and 1537-nm dual lines is investigated experimentally, and the results suggest that a switchable two-wavelength source could be accomplished efficiently by combining the bistable feature of Yb-doped fiber laser with the hybrid cavity configuration (pump-bypassed cavity plus the bifurcated cavity).

Number of references:22

Main heading:Fiber lasers

Controlled terms:Optical bistability - Optical communication - Pumping (laser) - Wavelength

Uncontrolled terms:Laser technique - Switchable two wavelength source

Classification code:717.1 Optical Communication Systems - 741.1.1 Nonlinear Optics - 744.1 Lasers, General - 744.4 Solid State Lasers

Treatment:Applications (APP); Experimental (EXP)

Database:Compendex

Accession number:20071210504070

Title:3D SPIHT algorithm of the multispectral image based on histogram modify

Authors:Chen, Ling-Jie (0); Liu, Xue-Bin (0); Liu, Qing-Fei (0)

Corresponding author:Chen, L.-J.(cljie-6@163.com)

Corr. author affiliation:Xi'an Institute of Optics and Precision Mechanics, CAS, Xi'an 710068, China

Source title:Guangxue Jishu/Optical Technique

Abbreviated source title:Guangxue Jishu

Volume:33

Issue:1

Issue date:January 2007

Publication year:2007

Pages:137-140+143

Language:Chinese

ISSN:10021582

CODEN:GJISEP

Document type:Journal article (JA)

Publisher:Optical Technique, Beijing, China

Abstract:A new multispectral image data compression algorithm (histogram modification/3D SPIHT coding algorithm) was proposed, which can efficiently reduce the spectral and spatial redundancies by applying Karhunen-Loeve transform (KLT) and two-dimensional discrete wavelet transform (2D DWT). The novelty of the algorithm is that it proposed a reversible histogram modify to convert the gray values of the multispectral image before decorrelation. Two schemes to encode the wavelet coefficient were proposed. Numerous experiments on a seven-band thematic mapper images show that the reconstructed images of the two schemes after using the histogram modification exhibit a better quality and higher compression ratio than the algorithms without histogram transform.

Number of references:6

Database:Compendex

Accession number:20071710574683

Title:Ultra-short electromagnetic pulse used for target detection

Authors:Ruan, Chi (1); Zhao, Wei (1); Chen, Guo-Fu (1); Liu, Bai-Yu (1); Zhu, Shao-Lan (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, 710068

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

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

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:6279 PART 3

Monograph title:27th International Congress on High-Speed Photography and Photonics

Issue date:2007

Publication year:2007

Article number:62795L

Language:English

ISSN:0277786X

CODEN:PSISDG

ISBN-10:0819463493

ISBN-13:9780819463494

Document type:Conference article (CA)

Conference name:27th International Congress on High-Speed Photography and Photonics

Conference date:September 17, 2006 - September 22, 2006

Conference location:Xi'an, China

Conference code:69475

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

Abstract:Two common approaches to generate ultra-short electromagnetic pulse are presented in this paper. One is that using a high-speed avalanche transistor and another is that using a laser triggering photoconductive semiconductor switch (PCSS). An ultra-short electromagnetic pulse with the rise time of 190 picosecond (ps), the pulse duration of 290 ps and the amplitude of 2.2 kV, is radiated by an ultra-wide band (UWB) antenna. It is noted that the ultra-wide frequency spectrum provided by the ultra-short electromagnetic pulses with duration of picosecond can be used to distinguish different targets. The radiated pulse would transmit and be reflected by various targets within the detection range. By analyzing the reflected signal, the corresponding reflection material can be discerned. The experiment is set up to distinguish the iron metal and concrete wall respectively. The results show that such ultra-short pulse technology has an excellent ability to distinguish objects.

Number of references:9

Main heading:Target tracking

Controlled terms:Electromagnetic pulse - Photoconductivity - Semiconductor switches - Signal analysis - Transistors - Ultrashort pulses

Uncontrolled terms:Avalanche transistors - Photoconductive semiconductor switch (PCSS) - Ultra short electromagnetic pulse

Classification code:744.1 Lasers, General - 741.1 Light/Optics - 716.2 Radar Systems and Equipment - 716.1 Information Theory and Signal Processing - 714.2 Semiconductor Devices and Integrated Circuits - 701.1 Electricity: Basic Concepts and Phenomena - 701 Electricity and Magnetism

Treatment:Theoretical (THR); Experimental (EXP)

DOI:10.1117/12.725439

Database:Compendex

Accession number:20071810582834

Title:Facile route to fabricate large-scale silver microtubes

Authors:Yang, Xinghua (1); Wang, Lili (1); Yang, 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, Number 17 Information Road, Xi'an, 710119, China

Corresponding author:Wang, L.(wanglili_212@yahoo.com.cn)

Source title:Materials Letters

Abbreviated source title:Mater Lett

Volume:61

Issue:14-15

Issue date:June 2007

Publication year:2007

Pages:2904-2907

Language:English

ISSN:0167577X

CODEN:MLETDJ

Document type:Journal article (JA)

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

Abstract:Large-scale uniform Ag microtubes with high length diameter ratios have been first successfully synthesized by a facile approach, using low-cost super fine glass fibers as templates. The samples were characterized by SEM and XRD. The investigations showed that calcining or adding of PEG-1000 and alcohol could greatly improve the mechanical strength of the sample. Especially the products exhibited favorable catalytic properties during the degradation of Rhodamine B by NaBH<inf>4</inf>. © 2007 Elsevier B.V. All rights reserved.

Number of references:19

Main heading:Silver compounds

Controlled terms:Alcohols - Catalysis - Glass fibers - Large scale systems - Scanning electron microscopy - Strength of materials - Synthesis (chemical) - X ray diffraction analysis

Uncontrolled terms:Diameter ratios - Silver microtubes - Template

Classification code:951 Materials Science - 812.3 Glass - 804.2 Inorganic Compounds - 961 Systems Science - 804.1 Organic Compounds - 801 Chemistry - 741.1 Light/Optics - 802.2 Chemical Reactions

Treatment:Theoretical (THR)

DOI:10.1016/j.matlet.2007.01.006

Database:Compendex

Accession number:20071710574751

Title:Numerical simulation on surface deformation for rotating mirrors of ultra-high speed photography

Authors:Huang, Hongbin (1); Li, Jingzhen (1); Gong, Xiangdong (1); Sun, Fengshan (2); He, Tiefeng (1)

Author affiliation:(1) College of Science and Technology, Shenzheng University, Shenzhen, 518060, China; (2) Xi'an Institute of Optics and Precision Mechanics, Academia Sinica, Xi'an, 710068, China

Corresponding author:Huang, H.(huanghb@szu.edu.cn)

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

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:6279 PART 3

Monograph title:27th International Congress on High-Speed Photography and Photonics

Issue date:2007

Publication year:2007

Article number:62797M

Language:English

ISSN:0277786X

CODEN:PSISDG

ISBN-10:0819463493

ISBN-13:9780819463494

Document type:Conference article (CA)

Conference name:27th International Congress on High-Speed Photography and Photonics

Conference date:September 17, 2006 - September 22, 2006

Conference location:Xi'an, China

Conference code:69475

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

Abstract:The numerical analysis method for the surface deformation of rotating mirrors were presented based on the three-dimensional elastic mechanics and the computational techniques of finite element in this manuscript. With this method, the surface deformation curves of rotating mirrors including multi-surfaces from three to eight, aluminous, steel, and beryllium ones were calculated. A result was obtained that surface patterns of a mirror in operation are primarily dependent on the amount of surfaces and the axial hole which whether or not exists for aluminous and steel mirrors, but it rests with the amount of surfaces as well as Poisson's ratio for a beryllium mirror with so tiny Poisson's ratio. This conclusion is different from that of forerunner.

Number of references:7

Main heading:Computer simulation

Controlled terms:Deformation - Finite element method - High speed cameras - Mirrors - Photography - Surface properties

Uncontrolled terms:Rotating mirrors - Spatially elastic mechanics - Surface deformation - Ultra-high speed photography

Classification code:951 Materials Science - 931.2 Physical Properties of Gases, Liquids and Solids - 921.6 Numerical Methods - 746 Imaging Techniques - 742.2 Photographic Equipment - 741.3 Optical Devices and Systems - 723.5 Computer Applications

Treatment:Theoretical (THR); Experimental (EXP)

DOI:10.1117/12.725998

Database:Compendex

Accession number:20073310766858

Title:Image smoothing method with structure information enhancing

Authors:Zhang, Dao-Bing (0); Zhang, Hui (0); Sun, Xian (0); Liu, Bo (0); Wang, Hong-Qi (0)

Corresponding author:Zhang, D.-B.(gistty@sina.com)

Corr. author affiliation:Xi'an Institute of Optics and Precision Mechanical, Chinese Acad. of Sci., Xi'an 710119, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:36

Issue:SUPPL.

Issue date:June 2007

Publication year:2007

Pages:303-308

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, 710068, China

Abstract:It presents a numerical scheme for smoothing homogeneity with coherence enhanced based on nonlinear diffusion filter. Isotropic diffusion in homogenous areas and anisotropic diffusion in edge neighbors are uniformed into the scheme, which could avoid the paradox of smoothing homogenous areas and enhancing structure information. During implementing, switching diffusion coefficients in diffusion matrix according to coherence ensures the discretization of partial differential equation to be concision and consistency. Numerical examples show that it is efficient in smoothing low coherence areas and enhancing coherence structures.

Number of references:10

Database:Compendex

Accession number:20071410529884

Title:The design of LED using in optical projector

Authors:Zhao, Hua-Long (0); Liang, Zhi-Yi (0); Shi, Xing-Chun (0); Yang, Xiao-Jun (0)

Corresponding author:Zhao, H.-L.(zhl.76@163.com)

Corr. author affiliation:Xi'an Institute of Optics and Precision Mechanics, CAS, Xi'an 710068, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:36

Issue:2

Issue date:February 2007

Publication year:2007

Pages:244-246

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, China

Abstract:A expanding plane source was designed. It was made up of many LED and can replace existing source sometime and can do it more possibly. The key of design is how to obtain optical parallel rays from many emanative LED. A optical reflector that can collect rays form 180 degree to 60 degree was designed by the method of combining math an soft simulation. Then a lens array and Fresnel lens, larger lens can make up of a tightness optical collector groupware that can make source have powerful brightness and good optical uniformity.

Number of references:6

Database:Compendex

Accession number:20073510790287

Title:Study on polarization error in depolarized fiber optical gyroscope

Authors:Zhang, Ya-Ni (1)

Author affiliation:(1) Department of Physics, Baoji College of Arts and Science, Baoji 721007, China; (2) Institute of Physics and Information Technology, Shaanxi Normal University, Xi'an 710062, China; (3) State Key Laboratory of Transient Optics and Photonic Technology, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710068, China

Corresponding author:Zhang, Y.-N.(zhangyn@opt.ac.cn)

Source title:Guangdianzi Jiguang/Journal of Optoelectronics Laser

Abbreviated source title:Guangdianzi Jiguang

Volume:18

Issue:7

Issue date:July 2007

Publication year:2007

Pages:792-795

Language:Chinese

ISSN:10050086

CODEN:GUJIE9

Document type:Journal article (JA)

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

Abstract:An optical depolarized structure of depolarized gyroscope is given. In this structure, polarization maintaining fiber (PMF) and loyt depolarizer are used in the output of light source. The polarization error of coherent light in the detector is calculated, and at the same time, the relationships of the four connecting angles-α, γ, μ θ to the polarization error and the optimum span are discussed. The parameters of fiber coin transfer matrix are evaluated into the formula of polarization error, and the error is 1.1 ×10-30/h.

Number of references:10

Main heading:Gyroscopes

Controlled terms:Coherent light - Depolarization - Elementary particle sources - Fiber optics

Uncontrolled terms:Fiber optic gryoscope (FOG) - Jones matrix - Polarization error

Classification code:741.1 Light/Optics - 801.4.1 Electrochemistry - 932.1.1 Particle Accelerators - 943.1 Mechanical Instruments

Treatment:Applications (APP); Experimental (EXP)

Database:Compendex

Accession number:20071410529904

Title:Designing on driving schedule generator for space array CCD camera and hardware based on CPLD

Authors:Ran, Xiao-Qiang (0); Wen, De-Sheng (0); Zheng, Pei-Yun (0); Wang, Hua (0); Liang, Yi-Tao (0)

Corresponding author:Ran, X.-Q.(xqran@126.com)

Corr. author affiliation: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:36

Issue:2

Issue date:February 2007

Publication year:2007

Pages:364-367

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, China

Abstract:Driving schedules of CCD47-20 Backthinned NIMO produced by e2v have been examined. The driving schedule generator with frame frequency and exposure time and its hardware have been designed for space array CCD camera. Complex programmable logic device (CPLD) is chosen as the hardware design platform. Driving schedule generator is described with VHDL. The RTL simulation is fulfilled and design is fitted into EPM9400LC84-15(a kind of CPLD products that made e2v). The hardware of driving schedule generator is also finished. The experiments show that designed generator is suitable for the driving of space array CCD camera, furthermore frame frequency and exposure time of camera could be adjusted according to different applications.

Number of references:5

Database:Compendex

Accession number:20073310766823

Title:Research on key technique of measure system for fragment windward area

Authors:Shen, Man-De (0); Chen, Liang-Yi (0); He, Jun-Hua (0); Zhang, Fa-Quan (0); Zhang, Min (0)

Corresponding author:Shen, M.-D.(shenmande@126.com)

Corr. author affiliation:Xi'an Institute of Optics and Precision Mechanics, Chinese Acad. of Sci., Xi'an 710119, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:36

Issue:SUPPL.

Issue date:June 2007

Publication year:2007

Pages:157-160

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, 710068, China

Abstract:For the efficiency and precision of measurement of fragment windward area, a new measurement system is proposed in the paper. This measure system consists of four cameras and four zoom lens at the same time. The efficiency and precision of measure are improved greatly. The zoom lens of this system has been introduced, and measure error has been discussed in detail. The measure system meets the requirement for measurement of fragment windward area. The relative error is less than 5%, and the time to measure single fragment is less than 30 seconds.

Number of references:5

Database:Compendex

Accession number:20081011140097

Title:Description of a radially polarized Laguerre-Gauss beam beyond the paraxial approximation

Authors:Yan, Shaohui (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) Graduate School, Chinese Academy of Sciences, Beijing 100039, China

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

Source title:Optics Letters

Abbreviated source title:Opt. Lett.

Volume:32

Issue:22

Issue date:November 15, 2007

Publication year:2007

Pages:3367-3369

Language:English

ISSN:01469592

CODEN:OPLEDP

Document type:Journal article (JA)

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

Abstract:Fifth-order corrected expressions for the fields of a radially polarized Laguerre-Gauss (R-TEM<inf>nl</inf>) laser beams are derived based on perturbative Lax series expansion. When the order of Laguerre polynomial is equal to zero, the corresponding beam reduces to the lowest-order radially polarized beam (R-TEM<inf>01</inf>). Simulation results show that the accuracy of the fifth-order correction for R-TEM1 depends not only on the diffraction angle of the beam as R-TEM<inf>01</inf> does, but also on the order of the beam. © 2007 Optical Society of America.

Number of references:14

Main heading:Gaussian beams

Controlled terms:Approximation theory - Computer simulation - Diffraction - Polarization

Uncontrolled terms:Diffraction angle - Paraxial approximation

Classification code:701.1 Electricity: Basic Concepts and Phenomena - 711 Electromagnetic Waves - 711.1 Electromagnetic Waves in Different Media - 723.5 Computer Applications - 921.6 Numerical Methods

Treatment:Theoretical (THR); Experimental (EXP)

DOI:10.1364/OL.32.003367

Database:Compendex

Accession number:20080411058970

Title:Impact of injection noise on locked starting of fiber lasers

Authors:Li, Zhe (1); Zhang, Wei (1); Zhao, Wei (1); Chen, Guo-Fu (1); Wang, Yi-Shan (1)

Corresponding author:Li, Z.(liji710072@yahoo.com.cn)

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

Abbreviated source title:Qiangjiguang Yu Lizishu

Volume:19

Issue:11

Issue date:November 2007

Publication year:2007

Pages:1807-1811

Language:Chinese

ISSN:10014322

CODEN:QYLIEL

Document type:Journal article (JA)

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

Abstract:It is reported that the mode-locking starting is achieved more quicker by injecting pulses noise into figure-of-eight Yb3+-doped fiber laser. A detailed investigation about this phenomenon is presented in this paper. Analyzing the process of the mode-locking in the cavity, we discover the noise in the cavity does affect the mode-locking starting process of the fiber laser. During the experiment, when the pump power is 214.75 mW, the figure-of-eight Yb3+-doped fiber laser without injecting noise can generate locked-pulse in 30-50 seconds; while the pulses with duration of 30 ns, 10 kHz repetition frequency, and 0.2 mW is injected into the cavity, the fiber laser can generate locked-pulse in 1-2 seconds.

Number of references:16

Main heading:Fiber lasers

Controlled terms:Laser mode locking

Uncontrolled terms:Figure of eight laser cavity - Injection locking - Laser technology - Ytterbium ion doped fiber

Classification code:741.1.2 Fiber Optics - 744.1 Lasers, General - 744.4 Solid State Lasers

Treatment:Experimental (EXP)

Database:Compendex

Accession number:20080111005536

Title:Research on spectral image electromagnetic compatibility

Authors:Xue, Li-Jun (0); Li, Zi-Tian (0); Zhang, Xiao-Chun (0); Liu, Xue-Bin (0); Wang, Zhong-Hou (0); Pi, Hai-Feng (0); Li, Chang-Le (0)

Corresponding author:Xue, L.-J.(xlj@opt.ac.cn)

Corr. author affiliation: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:36

Issue:11

Issue date:November 2007

Publication year:2007

Pages:2094-2097

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, 710068, China

Abstract:By EMC (electromagnetic compatibility) test for the spectral image, the spectral image device was demonstrated that it satisfied all requirements of EMC, with the exclusion of the segment frequency exceed for the conducted emission 102 and radiated emission 102. The EMC precis dictated other items are all eligible. By adopt filter and insulation means etc, all item are satisfied. The spectral image can work according to the design in its electromagnetic condition, and it can't interfere other equipment.

Number of references:6

Database:Compendex

Accession number:20072210628348

Title:Design of real-time video mosaic system

Authors:Feng, Gui-Lan (0); Tian, Wei-Jian (0); Qu, You-Shan (0); Zhan, Ghong-Jian (0); Ge, Wei (0)

Corresponding author:Feng, G.-L.(fg177@163.com)

Corr. author affiliation:Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710068, China

Source title:Guangdian Gongcheng/Opto-Electronic Engineering

Abbreviated source title:Guangdian Gongcheng

Volume:34

Issue:4

Issue date:April 2007

Publication year:2007

Pages:124-127

Language:Chinese

ISSN:1003501X

CODEN:GUGOEC

Document type:Journal article (JA)

Publisher:Chinese Academy of Sciences, Chengdu, Sichuan, China

Abstract:When the size of a needing scene was beyond the scope of an optical sensor, it was difficult to acquire the whole scene at the same time. In order to solve this problem, several optical sensors were adopted to capture the scene simultaneously, and several overlapped images were acquired. The overlapped images were rapidly registered by using the improved phase correlation image alignment method, and the gradated in-and-out amalgamation algorithm was applied to eliminate the seam, and a seamless and wide field of view image was acquired. A minitype video mosaics system based on TMS320DM642 was developed and the whole algorithm was implemented on this system. The test results show that the system can automatically stitch the two overlapped images with the resolution of 768×494 and the speed of 25FPS, and the real-time property of system is satisfied.

Number of references:9

Database:Compendex

Accession number:20071110487788

Title:Properties of up-conversion emission of Er3+-doped silicate glasses

Authors:Li, Wei-Nan (1); Zou, Kuai-Sheng (1); Lu, Min (1); Xiang, Li-Bin (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Procession Mechanics, Chinese Acad. of Sci., Xi'an 710068, China

Corresponding author:Li, W.-N.(liweinan100@sina.com.cn)

Source title:Wuji Cailiao Xuebao/Journal of Inorganic Materials

Abbreviated source title:Wuji Cailiao Xuebao

Volume:22

Issue:1

Issue date:January 2007

Publication year:2007

Pages:30-34

Language:Chinese

ISSN:1000324X

CODEN:WCXUET

Document type:Journal article (JA)

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

Abstract:Absorption spectra and up-conversion emission spectra of Er3+-doped silicate glasses were investigated. The intensity parameters Ωλ(λ=2, 4, 6), the oscillator strength, the spontaneous transition probabilities and the fluorescence branching ratios were calculated by the theory of Judd-Ofelt. The up-conversion emission spectra show there are stronger green light and red light centered about 522 nm, 545 nm and 658 nm, corresponding to the transition of 2H<inf>11/2</inf>&rarr4I<inf>15/2</inf>, 4S<inf>3/2</inf>&rarr4I<inf>15/2</inf>, 4F<inf>9/2</inf>&rarr4<inf>15/2</inf>, and the slope of fitted lines is 1.76, 1.94, 1.67, respectively, which indicates a two-photon process for the green and red light. The up-conversion mechanisms are determined to be excited state absorption and energy transfer.

Number of references:20

Main heading:Optical glass

Controlled terms:Absorption spectra - Electron transitions - Emission spectroscopy - Energy transfer - Excited states - Fluorescence - Light emission - Silicates

Uncontrolled terms:Excited state absorption - Silicate glasses - Two photon absorption - Up conversion emission

Classification code:741.1 Light/Optics - 812.3 Glass - 931.3 Atomic and Molecular Physics

Treatment:Experimental (EXP)

Database:Compendex

Accession number:20071710574544

Title:Photochromic diarylethene for holographic optical recording

Authors:Pu, Shouzhi (1); Yao, Baoli (2); Yang, Tianshe (1); Xu, Jingkun (1); Wang, Yingli (2); Lei, Ming (2)

Author affiliation:(1) Jiangxi Key Lab. of Organic Chemistry, Jiangxi Science and Technology Normal University, Nanchang 330013, China; (2) State Key Laboratory of Transient Optics Technology, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Science, Xi'an 710068, China

Corresponding author:Pu, S.(pushouzhi@tsinghua.org.cn)

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

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:6279 PART 1

Monograph title:27th International Congress on High-Speed Photography and Photonics

Issue date:2007

Publication year:2007

Article number:62791H

Language:English

ISSN:0277786X

CODEN:PSISDG

ISBN-10:0819463493

ISBN-13:9780819463494

Document type:Conference article (CA)

Conference name:27th International Congress on High-Speed Photography and Photonics

Conference date:September 17, 2006 - September 22, 2006

Conference location:Xi'an, China

Conference code:69475

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

Abstract:A unsymmetrical photochromic diarylethene, 1-(2-methyl-5-phenylthien-3-yl)- 2-[2-methyl-5-(3-fluorophenyl)thien- 3-yl]perfluorocyclopentene (1a), was synthesized and its structure was determined by single-crystal X-ray diffraction analysis. The compound showed good photochromism in solution, in PMMA amorphous film and in the single-crystalline phase upon photo-irradiation. Using the diarylethene 1b/PMMA film as recording medium and a non-polarized He-Ne laser (633 nm, 4 mW) for recording and readout, three types of polarization holographic optical recording were carried out successfully. The results showed that different patterns can be displayed with differently polarized readout lights, which can be applied in camouflage technology.

Number of references:30

Main heading:Optical recording

Controlled terms:Crystal structure - Olefins - Photochromism - Polarization - Single crystals - Synthesis (chemical) - X ray diffraction analysis

Uncontrolled terms:Holographic optical recording - Photochromic diarylethenes - X ray crystal structures

Classification code:741.1 Light/Optics - 741.3 Optical Devices and Systems - 801 Chemistry - 802.2 Chemical Reactions - 804.1 Organic Compounds - 933.1.1 Crystal Lattice

Treatment:Theoretical (THR)

DOI:10.1117/12.725186

Database:Compendex

Accession number:20080511071690

Title:Compensation technology for image motion of full-frame CCD aerial camera

Authors:Du, Yun-Fei (1); Liu, Bo (1); Hu, Bing-Liang (1); Wang, Hua-Wei (1); Tang, Yao (1)

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

Corresponding author:Du, Y.-F.(duyf_mail@163.com)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:36

Issue:12

Issue date:December 2007

Publication year:2007

Pages:2334-2336

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

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

Abstract:A compensation technology for the image motion of the full-frame CCD aerial camera is proposed. Exposal is continued when the shutter of the Full-Frame CCD is opened. The transfer speed of the charge can be controlled based on the different flying height and velocity. The pause pulse is intervened timely and the vertical transfer speed is changed accordingly. The theories of how to calculate the number and the cycle of the pause pulse are demonstrated, which are helpful in the fields of large resolution digital aerial camera in the future. A good result of compensation for the image motion of the full-frame CCD is shown by the experimental image.

Number of references:6

Main heading:Charge coupled devices

Controlled terms:Cameras - Computer networks - Digital cameras - Number theory - Technology

Uncontrolled terms:aerial cameras - compensation technology - Flying height (FH) - Image motions - transfer speed - Vertical transfer

Classification code:714.2 Semiconductor Devices and Integrated Circuits - 716 Telecommunication; Radar, Radio and Television - 742.2 Photographic Equipment - 901 Engineering Profession - 921 Mathematics

Database:Compendex

Accession number:20071710570596

Title:Optical and structural properties of self-assembled ZnO QD chains by L-MBE

Authors:Zhen, Bi (1); Jingwen, Zhang (2); Xiaodong, Yang (2); Dong, Wang (2); Xin'an, Zhang (2); Weifeng, Zhang (4); Xun, Hou (2)

Author affiliation:(1) School of Science, Xi'an Jiaotong University, Xi'an, 710049, China; (2) Key Laboratory of Photonics Technology for Information, Xi'an Jiaotong University, Shaanxi Province Xi'an, 710049, China; (3) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, 710068, China; (4) School of Physics and Photoelectronics, Henan University, Kaifeng, 475000, China

Corresponding author:Jingwen, Z.(jwzhang@mail.xjtu.edu.cn)

Source title:Journal of Crystal Growth

Abbreviated source title:J Cryst Growth

Volume:303

Issue:2

Issue date:May 15, 2007

Publication year:2007

Pages:407-413

Language:English

ISSN:00220248

CODEN:JCRGAE

Document type:Journal article (JA)

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

Abstract:ZnO complex 3D nano-structures have been self-organized on Al<inf>2</inf>O<inf>3</inf> (0 0 0 1) substrate by laser molecular beam epitaxy (L-MBE). It is shown by AFM morphology that the structure is composed of 1D quantum dot chains (QDCs) and larger nano-islands at the nodes of QDCs. The formation mechanism of the nano-structure is also investigated. XRD results indicate that the nano-structure is highly c-axis oriented, with the aligned in-plane oriented domains. Time-integrated photoluminescence (TIPL) of the sample shows obvious blue-shift and broadening of the near band-edge (NBE) emission at room temperature, which are related to the quantum confinement effects. Time-resolved PL (TRPL) result shows bi-exponential decay behavior of ZnO QDCs, with a fast decay time of 38.21 ps and a low decay time of 138.19 ps, respectively, which is considered to be originated from the interdot coupling made by coherent emission and reabsorption of the photons in QDCs. © 2007 Elsevier B.V. All rights reserved.

Number of references:31

Main heading:Semiconductor quantum dots

Controlled terms:Atomic force microscopy - Molecular beam epitaxy - Optical properties - Quantum confinement - Semiconductor materials - Structural properties - X ray diffraction - Zinc oxide

Uncontrolled terms:Decay behaviors - Laser epitaxy - Low dimensional structures

Classification code:933.1.2 Crystal Growth - 931.4 Quantum Theory; Quantum Mechanics - 931.3 Atomic and Molecular Physics - 804.2 Inorganic Compounds - 951 Materials Science - 741.3 Optical Devices and Systems - 714.2 Semiconductor Devices and Integrated Circuits - 712.1 Semiconducting Materials - 408 Structural Design - 741.1 Light/Optics

Treatment:Experimental (EXP)

DOI:10.1016/j.jcrysgro.2006.12.077

Database:Compendex

Accession number:20073010707083

Title:Lasing characteristics of strongly pumped Yb-doped photonic crystal fiber laser

Authors:Li, Kang (1); Wang, Yishan (1); Zhao, Wei (1); Chen, Guofu (1); Peng, Qinjun (3); Cui, Dafu (3); Xu, Zuyan (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 710068, China; (2) Graduate School, Chinese Academy of Sciences, Beijing 100039, China; (3) Key Laboratory of Optical Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China

Corresponding author:Li, K.(likang@opt.ac.cn)

Source title:Chinese Optics Letters

Abbreviated source title:Chin. Opt. Lett.

Volume:5

Issue:6

Issue date:June 2007

Publication year:2007

Pages:347-350

Language:English

ISSN:16717694

Document type:Journal article (JA)

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

Abstract:A strongly pumped Yb-doped large-mode-area photonic crystal fiber (LMA-PCF) laser is analyzed. The lasing characteristics of an improved Fabry-Perot (F-P) cavity fiber laser using LMA-PCF are studied theoretically based on a rate equation model and the exact numerical solution of the rate equations is in excellent agreement with the experimental result.

Number of references:16

Main heading:Fiber lasers

Controlled terms:Photonic crystals - Rare earth additions - Ytterbium

Uncontrolled terms:Fabry-Perot (F-P) cavity - Large mode area photonic crystal fiber (LMA-PCF) laser - Rate equations

Classification code:547.2 Rare Earth Metals - 741.1.2 Fiber Optics - 741.3 Optical Devices and Systems - 744.4 Solid State Lasers

Treatment:Experimental (EXP)

Database:Compendex

Accession number:20080511071667

Title:Optical parametric chirped pulse amplifier based on femtosecond laser

Authors:Li, Xiao-Li (1); Shi, Shun-Xiang (1); Liu, Hong-Jun (2); Wang, Hong-Ying (2); Zhao, Wei (2)

Author affiliation:(1) School of Technique Physics, Xidian University, Xi'an 710071, China; (2) State Key Laboratory of Transient Optics and Photonics Technology, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China

Corresponding author:Li, X.-L.(lxl8201@sohu.com)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:36

Issue:12

Issue date:December 2007

Publication year:2007

Pages:2231-2234

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

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

Abstract:A double-pass noncollinear optical parametric chirped pulse amplifier based on an Ti: sapphire femtoscond oscillator has been demonstrated. The signal is double-pass amplified in the second nonlinear crystal by a long pump pulse, in which the signal and pump pulses of each pass are complete phase matched in the plane with the maximum of the effective nonlinearity. Net saturated gain of 3 × 107 with rms fluctuations of less than 3% is achieved and the superfluorescence is suppressed less than 1% of the total output pulse energy. By this scheme, the temporal overlap between the signal and pump are improved, the conversion efficiency increased, and superfluorescence is deduced and the energy stability is enhanced.

Number of references:16

Main heading:Pulsed laser applications

Controlled terms:Pulse amplifiers - Pulsed laser deposition - Pumps

Uncontrolled terms:Chirped pulse amplifiers - Double pass - Femtosecond (fs) lasers - Non linear crystals - Noncollinear - Nonlinearity (including bifurcation theory) - Optical (PET) (OPET) - pump pulses - Saturated gain - Ti:sapphire

Classification code:618.2 Pumps - 713.1 Amplifiers - 744.9 Laser Applications

Database:Compendex

Accession number:20071710574634

Title:Generation of short electrical pulses by photoconductive semiconductor switches triggered with a high-power laser diode

Authors:Zhang, Tong-Yi (1); Shi, Shun-Xiang (2); Zhao, Wei (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, 322 West Youyi Road, Xi'an 710068, China; (2) School of Technical Physics, Xidian University, 2 South Taibai Road, Xi'an 710071, China

Corresponding author:Zhang, T.-Y.(tyzhang@opt.ac.cn)

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

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:6279 PART 2

Monograph title:27th International Congress on High-Speed Photography and Photonics

Issue date:2007

Publication year:2007

Article number:627946

Language:English

ISSN:0277786X

CODEN:PSISDG

ISBN-10:0819463493

ISBN-13:9780819463494

Document type:Conference article (CA)

Conference name:27th International Congress on High-Speed Photography and Photonics

Conference date:September 17, 2006 - September 22, 2006

Conference location:Xi'an, China

Conference code:69475

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

Abstract:Microstrip line pulse generators based on gallium arsenide (GaAs) photoconductive semiconductor switches have been fabricated and tested experimentally. The GaAs photoconductive semiconductor switches were optically triggered with a 70 W, 85 ns duration (FWHM) high power laser diode. Short electrical pulses have been obtained and reported with practical applications emphasized. The risetimes and the durations of the output electric pulses can be less than 2 ns and 6 ns, respectively, which are in remarkable contrast to the 20 ns risetimes and the 85 ns durations of the activating optical pulses.

Number of references:23

Main heading:Pulse generators

Controlled terms:Laser pulses - Microstrip lines - Photoconductivity - Semiconducting gallium arsenide - Semiconductor lasers - Semiconductor switches

Uncontrolled terms:Electric pulses - Electrical pulse generators - High power laser diodes - Photoconductive semiconductor switch

Classification code:744.1 Lasers, General - 741.1 Light/Optics - 716 Telecommunication; Radar, Radio and Television - 744.4.1 Semiconductor Lasers - 714.2 Semiconductor Devices and Integrated Circuits - 712.1.2 Compound Semiconducting Materials - 701.1 Electricity: Basic Concepts and Phenomena - 713.4 Pulse Circuits

Treatment:Theoretical (THR); Experimental (EXP)

DOI:10.1117/12.725369

Database:Compendex

Accession number:20073010707217

Title:An analysis of the performance of stacked parallel-plate Blumlein pulse generators

Authors:Zhang, Tong-Yi (0); Shi, Shun-Xiang (0); Zhao, Wei (0); Ruan, Chi (0); Zhu, Shao-Lan (0)

Corresponding author:Zhang, T.-Y.(tyzhang@opt.ac.cn)

Corr. author affiliation:State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Science, Xi'an 710068, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:36

Issue:6

Issue date:June 2007

Publication year:2007

Pages:976-981

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, 710068, China

Abstract:The performance of single and stacked parallel-plate Blumlein pulse generators have been analyzed by combining the space-time diagram and the moments method. The numerical results show that the on-state resistance of the switch should be as small as possible in order to get a good performance of the system. The matched loads of a Blumlein pulse generator for maximum energy output or for the maximum voltage output are different. The voltage matched load of stacked Blumleins can be well estimated from the one of a single Blumlein, but the energy matched load extrapolated from the single Blumlein is overestimated. It is also shown that the ratio of the spacing of the three conductor plates to the width of the plates determines the voltage matched load and the energy matched load, and influences the voltage multiplication factor and the efficiency of energy output.

Number of references:21

Database:Compendex

Accession number:20075210995170

Title:High quality GaN films growth on pre-treated sapphire substrate

Authors:Peng, Dongsheng (1); Feng, Yuchun (1); Niu, Hanben (1)

Author affiliation:(1) Institute of Optoelectronics, Shenzhen University, Shenzhen 518060, China; (2) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710068, China; (3) Graduate School, Chinese Academy of Sciences, Beijing 100049, China

Corresponding author:Peng, D.

Source title:Pan Tao Ti Hsueh Pao/Chinese Journal of Semiconductors

Abbreviated source title:Pan Tao Ti Hsueh Pao

Volume:28

Issue:SUPPL.

Issue date:September 2007

Publication year:2007

Pages:241-244

Language:Chinese

ISSN:02534177

CODEN:PTTPDZ

Document type:Journal article (JA)

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

Abstract:Etch pits on sapphire substrate surface are formed after surface treating. GaN films have been grown by LP-MOCVD on the sapphire substrate, a half of which are treated by chemical etch. The crystal quality and optical quality of GaN films are analyzed by high-resolution double crystal X-ray diffraction (DCXRD) and optical transmission measurement. Results indicate that the crystal quality of GaN determined by transmission measurement is in agreement with that determined by DCXRD, that the crystal quality and optical quality of GaN films are enhanced by pre-treating sapphire substrate, and that the (0002) plane and (1012) plane full-width at half-maximum by DCXRD of GaN films grown on pre-treated sapphire substrate are as low as 208.802″ and 320.762″, respectively.

Number of references:5

Main heading:Gallium nitride

Controlled terms:Etching - Film growth - Full width at half maximum - Light transmission - Metallorganic chemical vapor deposition - Sapphire - Substrates - Surface treatment - Thin films - X ray diffraction analysis

Uncontrolled terms:Chemical etching - Crystal quality - Gallium nitride film - Optical quality - Optical transmission - Pretreated sapphire substrate

Classification code:921 Mathematics - 804.2 Inorganic Compounds - 802.2 Chemical Reactions - 931.3 Atomic and Molecular Physics - 801 Chemistry - 714.2 Semiconductor Devices and Integrated Circuits - 712.1.2 Compound Semiconducting Materials - 741.1 Light/Optics

Treatment:Experimental (EXP)

Database:Compendex

Accession number:20071410529891

Title:The flux characteristic analysis of interferential imaging spectrometer

Authors:Ruan, Ping (0); Yang, Jian-Feng (0); Zhao, Bao-Chang (0)

Corresponding author:Ruan, P.(ruanp@opt.ac.cn)

Corr. author affiliation:Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710068, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:36

Issue:2

Issue date:February 2007

Publication year:2007

Pages:282-285

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, China

Abstract:According to the requirement of high resolution imaging spectrometer, a large aperture interferential imaging spectrometer (LASIS) was designed. The energy calculation of different illuminance proved its distinct advantage in aspect of energy utilization. The aviation experiments were carried out in December when the sun angle is the lowest during one year. The flying results validate that LASIS has the characteristic of high energy utilization, because some areas of the images are saturated. In the mean time, the flight results also show that the instrument has the ability of improving its resolution.

Number of references:7

Database:Compendex

Accession number:20072510662693

Title:Experimental research of a multipulse Yb-doped fiber mode-locked laser

Authors:Yang, Ling-Zhen (1); Wang, Yun-Cai (1); Chen, Guo-Fu (2); Wang, Yi-Shan (2); Zhao, Wei (2)

Author affiliation:(1) Physics Department, Taiyuan University of Technology, Taiyuan 030024, China; (2) State Key Laboratory of Transient Optics Technology, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710068, China

Corresponding author:Yang, L.-Z.(office-science@tyut.edu.cn)

Source title:Guangdianzi Jiguang/Journal of Optoelectronics Laser

Abbreviated source title:Guangdianzi Jiguang

Volume:18

Issue:5

Issue date:May 2007

Publication year:2007

Pages:533-535

Language:Chinese

ISSN:10050086

CODEN:GUJIE9

Document type:Journal article (JA)

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

Abstract:The Yb3+-doped fiber mode-locked laser using the polarization sensitive ISO and polarization controller (PC) is reported. In the normal dispersion, the fiber laser can oscillate the multipulse state by adjusting the position of the PC. If the polarization state is constant, the output of Yb3+-doped fiber mode-locked laser changes from single pulse to multipulse with the increasing of the pump power. The fiber laser can achieve different multipulse output by adjusting the PC1 and PC2 carefully. The generation of the multipulse is induced by over-driving the fast artificial saturable absorber.

Number of references:9

Main heading:Fiber lasers

Controlled terms:Dispersion (waves) - Ultrashort pulses

Uncontrolled terms:Artificial saturable absorber - Fiber laser technology - Multipulse - Polarization controller (PC) - Ytterbium doped fiber

Classification code:741.1.2 Fiber Optics - 744.1 Lasers, General - 744.4 Solid State Lasers

Treatment:Experimental (EXP)

Database:Compendex

Accession number:20081711216201

Title:Experimental research on radiation induced changes of polymer optical fiber under gamma-ray irradiation

Authors:Ge, Wenping (1); Tian, Weijian (2); Jia, Zhenhong (1); Wang, Yaoxiang (2)

Author affiliation:(1) College of Information Science and Engineering, Xinjiang University, Urumchi 830046; (2) Xi'an Institute of Optics and Precision Mechanics, Academia Sinica, Xi'an 710068

Corresponding author:Ge, W.

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

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:6713

Monograph title:Nanophotonics and Macrophotonics for Space Environments

Issue date:2007

Publication year:2007

Article number:67130E

Language:English

ISSN:0277786X

CODEN:PSISDG

ISBN-13:9780819468611

Document type:Conference article (CA)

Conference name:Nanophotonics and Macrophotonics for Space Environments

Conference date:August 27, 2007 - August 28, 2007

Conference location:San Diego, CA, United states

Conference code:71869

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

Abstract:Under the high energy irradiation, the charges (even little) of molecules of polymer can cause the physical and chemical characteristics evident changes of polymer. The physics and chemical mechanisms which are responsible for radiation induced loss was analyzed. The radiation damage of polymethylmethacrylate (PMMA), Polystyrene PS and polycarbonate (PC) optical fiber under y-ray irradiation was researched experimentally. The visible light transmission of the POF under different irradiation dose was measured. The results indicated that the radiation damage of three kinds of POF was wavelength-dependent. Under lower dose below 1KGy, the transmission rate decreased identical in the whole visible light range. When the irradiation dose exceeded 5KGy, the transmission rate reduced obviously, and the recovery indicated that the visible light transmission rate of the POF in the range of 400nm to 500nm comparing with 600nm to 800nm, decreased seriously under the irradiation dose exceeded 5kGy. The transmission rate of both PMMA and PC have an evident peak value at the range 550nm-650m, and that of PS has a wide band at the range 500-700nm. We also measured the recovery of three kinds of POF under different irradiation dose by measuring several times the POF after stopping irradiating.

Number of references:7

Main heading:Nanotechnology

Controlled terms:Gamma rays - Insertion losses - Optical fibers - Organic polymers - Radiation

Uncontrolled terms:Irradiation cross-link - Irradiation damage - Irradiation degradation - Irradiation recovery - Polymer optical fiber - Transmission rate

Classification code:932.1 High Energy Physics - 931.3 Atomic and Molecular Physics - 815.1.1 Organic Polymers - 761 Nanotechnology - 741.1.2 Fiber Optics - 701.1 Electricity: Basic Concepts and Phenomena - 657.1 Solar Energy and Phenomena

Treatment:Theoretical (THR)

DOI:10.1117/12.736339

Database:Compendex

Accession number:20074310888822

Title:Fast background roughness-based infrared navel vessel target detection algorithm

Authors:Lou, Yue (0); Xiang-Li, Bin (0); Liu, Bo (0)

Corresponding author:Lou, Y.(lou_yue2000@yahoo.com.cn)

Corr. author affiliation:Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710068, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:36

Issue:9

Issue date:September 2007

Publication year:2007

Pages:1759-1763

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, 710068, China

Abstract:Based on the characteristic analysis of infrared naval vessel target under the sea-sky background, a new type of adaptive infrared small target detection method is developed, which uses the LOG operator to detect the outline of the target and then decide its center point as the seed point in the region growing procedure. In the proposed target image segmentation approach, the parameters of the LOG operator are adaptively determined using the roughness estimation of the background. Compared with the traditional detection method, this procedure is the effective method for small target detection and recognition, and it can reduce the computation requirement, improve the detection speed, restrain the unnecessary seed points in region growing process, and increase the possibility of target detection.

Number of references:9

Database:Compendex

Accession number:20073310766864

Title:Multiple slope integration based on CMOS image sensor

Authors:Liu, Hai-Ying (0); Cao, Jian-Zhong (0); Dong, Sen (0); Tang, Li-Nao (0); Zhu, Qing (0)

Corresponding author:Liu, H.-Y.(liuhaiying@opt.ac.cn)

Corr. author affiliation:Xi'an Institute of Optics and Precision Mechanics of, Chinese Acad. of Sci., Xi'an 710119, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:36

Issue:SUPPL.

Issue date:June 2007

Publication year:2007

Pages:331-334

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, 710068, China

Abstract:The principle of multiple slope integration is introduced. Based on analysis of driving schedule of Cypress IBIS5-A-1300 CMOS image sensor, multiple slope integration in synchronous shutter is implemented. In this design, complex programmable logic device (CPLD) is chosen as the hardware design platform; driving schedule generator is described with VHDL. The function simulation of the system is successfully fulfiled with Qutartus II software. The result of experiment indicates that multiple slope integration is a good method to extend the dynamic range of linear transfer image sensor.

Number of references:6

Database:Compendex

Accession number:20071210504045

Title:The CCD collimating system based on FPGA aiming to measure angle

Authors:Gu, Lin (0); Hu, Xiao-Dong (0); Chen, Liang-Yi (0); Qiu, Ren-Feng (0)

Corresponding author:Gu, L.(gulinjin@163.com)

Corr. author affiliation:Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710068, China

Source title:Guangxue Jishu/Optical Technique

Abbreviated source title:Guangxue Jishu

Volume:33

Issue:1

Issue date:January 2007

Publication year:2007

Pages:56-58+61

Language:Chinese

ISSN:10021582

CODEN:GJISEP

Document type:Journal article (JA)

Publisher:Optical Technique, Beijing, China

Abstract:In order to improve the precision, speed, integration and reliability of the linear CCD system, which was used to measure angle, a new digital system based on FPGA (as the core of the system and the carrier of digital circuit) was designed. In this system, CCD light integration time could be automatically adjusted according to intensity of illumination. The CCD signal was filtered by gauss filter. Utilizing the characteristic that the grads of grey scale breaks at the edge of image, the pixel edge of image was automatically detected. The detection of the sub-pixel edge of image was fulfilled by the polynomial interpolation algorithm and the angle was calculated. The system was modularly designed with VHDL and MAX + plus II software. Simulated and tested, the system is proved to have the characteristic of high precision, speed, integration and reliability.

Number of references:6

Database:Compendex

Accession number:20071910594852

Title:Application of ellipse of inertia in measuring the object's 3D pose from mono-view

Authors:Peng, Xiao-Dong (0); Zhou, Si-Zhong (0); Liu, Bo (0); Tang, Hui-Jun (0); Yan, Min-Qi (0)

Corresponding author:Peng, X.-D.(pxd@opt.ac.cn)

Corr. author affiliation:Xi'an Institute of Optics and Precision Mechanics, CAS, Xi'an 710068, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:36

Issue:3

Issue date:March 2007

Publication year:2007

Pages:568-573

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, China

Abstract:A new approach focused on how to measure the precision 3D pose of an object from mono-view had been put forward, which was based on calculating the ellipse of inertia of the object s projection that was obtained from an image through the image segmentation process and reckoning pitch and yaw angles of the object through this ellipse. It could be applied in any image containing objects of axial symmetry not only because it used the knowledge of object s figuration adequately, but also it did not require a high degree of image details which many other arithmetic dose. According to a conclusion that is drawn from analyzing experiment data which came from two series of images by using this approach, it is precise and stable.

Number of references:9

Database:Compendex

Accession number:20071210504043

Title:Analysis and design of a low noise CCD video processing circuit for astronomical camera

Authors:Wang, Hua (0); Wen, De-Sheng (0); Qiu, Yue-Hong (0); Ran, Xiao-Qiang (0)

Corresponding author:Wang, H.(huawang8010@opt.ac.cn)

Corr. author affiliation:Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710068, China

Source title:Guangxue Jishu/Optical Technique

Abbreviated source title:Guangxue Jishu

Volume:33

Issue:1

Issue date:January 2007

Publication year:2007

Pages:48-51+55

Language:Chinese

ISSN:10021582

CODEN:GJISEP

Document type:Journal article (JA)

Publisher:Optical Technique, Beijing, China

Abstract:The astronomical camera is composed of emitter follower, pre-amplifier, differential amplifier, programmable gain amplifier, correlated double sampling circuit and 16bit analog digital converter. All parts of the video processing circuit were analyzed and the design methods were presented. The low noise CCD video processing circuit was simulated by PSPICE and was tested. Results show that the designed circuit can effectively suppress reset noise and low frequency noise. The noise of astronomical camera is lower than 15 electrons, which can meet the requirement.

Number of references:11

Database:Compendex

Accession number:20074310888337

Title:Narrow band interleaver based on one-dimensional photonic crystal with positive-negative index alternant multilayer

Authors:Zhang, Wenfu (1); Fang, Qiang (1); Cheng, Yihua (1); Liu, Jihong (1); Xia, Guijin (2)

Author affiliation:(1) Department of Electronic and Information Engineering, Xi'an Institute of Post and Telecommunication, Xi'an 710061, China; (2) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710068, China

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

Source title:Guangxue Xuebao/Acta Optica Sinica

Abbreviated source title:Guangxue Xuebao

Volume:27

Issue:9

Issue date:September 2007

Publication year:2007

Pages:1695-1699

Language:Chinese

ISSN:02532239

CODEN:GUXUDC

Document type:Journal article (JA)

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

Abstract:The transmission spectrum of one-dimensional (1D) photonic crystal (PC) with positive-negative index alternant multilayer is studied with transfer-matrix method. The result reveals that this type of 1D PC has broad-flat forbidden band and narrow-sharp transmitted band. The transmission-spectrum character is affected by Bragg scattering, Fabry-Pe´rot resonating and the n¯ = 0 forbidden band. The position of transmitted band is determined by Fabry-Pe´rot resonating. A new narrow-band interleaver applied to dense wavelength division multiplexing (DWDM) system is designed by this type of one-dimensional photonic crystal. The simulation result of 0.8 nm channel spacing interleaver is presented. It is shown that this new interleaver has narrow channel spacing, flat forbidden band and narrow transmitted band. The channel spacing can be adjusted by change of the unit period optical thickness of one-dimensional photonic crystal.

Number of references:13

Main heading:Optical filters

Controlled terms:Computer simulation - Dense wavelength division multiplexing - Light scattering - Light transmission - One dimensional - Optoelectronic devices - Photonic crystals - Refractive index - Transfer matrix method

Uncontrolled terms:Bragg scattering - Interleaver - Negative index material - Positive negative index alternation multilayer - Transmission spectrum

Classification code:717.2 Optical Communication Equipment - 723.5 Computer Applications - 741.1 Light/Optics - 741.3 Optical Devices and Systems

Treatment:Experimental (EXP)

Database:Compendex

Accession number:20073310766847

Title:Research on information quantity on aerial film and CCD

Authors:Wang, Chen (0); Zheng, Cheng-Dong (0); Che, Rong (0); Chen, Liang-Yi (0)

Corresponding author:Wang, C.(pap@opt.ac.cn)

Corr. author affiliation:Xi'an Institute of Optics and Precision Mechanics, Chinese Acad. of Sci., Xi'an 710068, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:36

Issue:SUPPL.

Issue date:June 2007

Publication year:2007

Pages:259-261

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, 710068, China

Abstract:In order to seek the advantage of aerial film, the information quantity of aerial film and CCD are compared by calculating Nt(the number of degrees of time), Ns(the number of degrees of freedom), Nc (the number of degrees of color), Nw(the number of degrees of freedom polarization). The information quantity of common 1 124 aerial film is 61 times to 3K × 3K area array CCD, 6.7 times to 9K × 9K area array CCD. The results show that the CCD will never exceed aerial film in the field of information quantity.

Number of references:10

Database:Compendex

Accession number:20071710574705

Title:Research on character of fiber overcoupled devices

Authors:Liu, Chunyu (1); Ye, Hongan (1)

Author affiliation:(1) HLJ Province Key Lab of Senior-education for Electronic Engineering, HLJ University, Harbin, 150080, China; (2) Xian Institute of Optics and Precision Mechanics, Xian, 710068, China

Corresponding author:Liu, C.

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

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:6279 PART 3

Monograph title:27th International Congress on High-Speed Photography and Photonics

Issue date:2007

Publication year:2007

Article number:627969

Language:English

ISSN:0277786X

CODEN:PSISDG

ISBN-10:0819463493

ISBN-13:9780819463494

Document type:Conference article (CA)

Conference name:27th International Congress on High-Speed Photography and Photonics

Conference date:September 17, 2006 - September 22, 2006

Conference location:Xi'an, China

Conference code:69475

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

Abstract:Utilizing the fused-taper technology, a fiber coupler with sensitive to wavelength and strain is obtained. This type coupler is fabricated after Nth coupling period. They are usually called overcoupled devices, N is the number of coupling period, N>>1. The relation between wavelength and coupling ratio of the coupler is analyzed. The maximum sensitive wavelength can be control by the fused-taper technology. When a Bragg wavelength of the fiber Bragg grating (FBG) is agreed with the maximum sensitive wavelength of the coupler, the shift of the Bragg wavelength is can be detected. In this paper we demodulate one FBG which Bragg wavelength is at 1564.69 with the coupler. So the coupler with sensitive to wavelength can be used to demodulate the FBG. And the sensitive to strain of the coupler is also analyzed. The experimental data is present as the theory value, sinusoidal curve. So the coupler can also be used to detect the strain and the temperature with the packaging of the thermal sensitive. The overcoupled couplers have a potential application to the sensing system.

Number of references:4

Main heading:Optical fiber coupling

Controlled terms:Demodulation - Fiber Bragg gratings - Sensitivity analysis - Wavelength

Uncontrolled terms:Fused taper - Overcoupled couplers - Strain sensitization - Wavelength sensitization

Classification code:716 Telecommunication; Radar, Radio and Television - 741.1.2 Fiber Optics - 741.3 Optical Devices and Systems - 921 Mathematics

Treatment:Theoretical (THR); Experimental (EXP)

DOI:10.1117/12.725728

Database:Compendex

Accession number:20071710568305

Title:Non-collinear CPOPA seeded by an Yb3+-doped self-starting passive mode-locked fiber laser

Authors:Hongying, Wang (1); Hongjun, Liu (1); Xiaoli, Li (1); Wei, Zhao (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:Hongying, W.(why@opt.ac.cn)

Source title:Optics Express

Abbreviated source title:Opt. Express

Volume:15

Issue:8

Issue date:April 16, 2007

Publication year:2007

Pages:4493-4498

Language:English

E-ISSN:10944087

Document type:Journal article (JA)

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

Abstract:Using a home-made seed at 1053 nm from a Yb3+-doped passively mode-locked fiber laser of 1.5 nJ/pulse, 362 ps pulse duration with a repetition rate of 3.842 MHz, a compact, low cost, stable and excellent beam quality non-collinear chirped pulse optical parametric amplifier omitting the bulky pulse stretcher has been demonstrated. A gain higher than 4.0 ×10 6, single pulse energy exceeding 6 mJ with fluctuations less than 2% rms, 14 nm amplified signal spectrum and recompressed pulse duration of 525 fs are achieved. This provides a novel and simple amplification scheme. © 2007 Optical Society of America.

Number of references:21

Main heading:Optical parametric oscillators

Controlled terms:Erbium doped fiber amplifiers - Pulse width modulation - Spectrum analysis

Uncontrolled terms:Chirped pulse optical parametric amplifier (CPOPA) - Signal spectrum - Single pulse energy

Classification code:713.2 Oscillators - 716 Telecommunication; Radar, Radio and Television - 741.1.2 Fiber Optics - 741.3 Optical Devices and Systems - 744.7 Laser Components - 921 Mathematics

Treatment:Experimental (EXP)

DOI:10.1364/OE.15.004493

Database:Compendex

Accession number:20141817654568

Title:A 355 TW femtosecond Ti: Sapphire laser facility with three stage amplifiers

Authors:Wang, Zhaohua (1); Wei, Zhiyi (1); Zhang, Jie (1); Wang, Peng (1); Ling, Weijun (2); Zhu, Jiangfeng (1); Tian, Jinrong (1)

Source title:Optics InfoBase Conference Papers

Abbreviated source title:Opt.InfoBase Conf. Papers

Monograph title:Conference on Lasers and Electro-Optics, CLEO 2007

Issue date:2007

Publication year:2007

Language:English

E-ISSN:21622701

ISBN-10:1557528349

ISBN-13:9781557528346

Document type:Conference article (CA)

Conference name:Conference on Lasers and Electro-Optics, CLEO 2007

Conference date:May 6, 2007 - May 6, 2007

Conference location:Baltimore, MD, United states

Conference code:104696

Publisher:Optical Society of America

Number of references:2

Main heading:Stages

Uncontrolled terms:Femtoseconds - Peak power - Three-stage amplifiers - Ti: Sapphire laser

Classification code:402.2 Public Buildings

Database:Compendex

Accession number:20141817663701

Title:A 355 TW femtosecond Ti: Sapphire laser facility with three stage amplifiers

Authors:Wang, Zhaohua (1); Wei, Zhiyi (1); Zhang, Jie (1); Wang, Peng (1); Ling, Weijun (2); Zhu, Jiangfeng (1); Tian, Jinrong (1)

Source title:Optics InfoBase Conference Papers

Abbreviated source title:Opt.InfoBase Conf. Papers

Monograph title:Quantum Electronics and Laser Science Conference, QELS 2007

Issue date:2007

Publication year:2007

Language:English

E-ISSN:21622701

ISBN-10:1557528349

ISBN-13:9781557528346

Document type:Conference article (CA)

Conference name:Quantum Electronics and Laser Science Conference, QELS 2007

Conference date:May 6, 2007 - May 6, 2007

Conference location:Baltimore, MD, United states

Conference code:104740

Publisher:Optical Society of America

Abstract:A compact femtosecond Ti: sapphire laser facility with three stage amplifiers was developed. By eliminating ASE and shaping spectrum, we generated 11J laser pluse at duration of 31fs, which corresponds to peak power of about 355TW. © 2007 Optical Society of America.

Number of references:2

Main heading:Stages

Controlled terms:Quantum electronics

Uncontrolled terms:Femtoseconds - Peak power - Three-stage amplifiers - Ti: Sapphire laser

Classification code:402.2 Public Buildings - 744 Lasers

Database:Compendex

Accession number:20073010707247

Title:Optical path difference analysis of ultra-rapid-scanning imaging interferometer

Authors:Su, Li-Juan (0); Yuan, Yan (0); Xiang, Li-Bin (0); Zhang, Wen-Xi (0); Tao, Ran (0)

Corresponding author:Su, L.-J.(lijuan.su@gmail.com)

Corr. author affiliation:Xi'an Institute of Optics and Precision Mechanics of CAS, Xi'an 710068, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:36

Issue:6

Issue date:June 2007

Publication year:2007

Pages:1120-1123

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, 710068, China

Abstract:A new method to deduce the optical path difference of a kind of ultra-rapid-scanning imaging spectrometer is provided. The process of the derivation is elaborated, and the ultimate formula is given. The formula of the optical path difference is recalculated by setting several related parameters. The curves of optical path difference are presented. They are given by changing one of those parameters with other parameters at fixed values. The contributions of the parameters is compared and discussed. The design of this kind of ultra-rapid-scanning imaging interferometer and the recovery of the interferogram to spectrogram should base on the optical path difference formula.

Number of references:5

Database:Compendex

Accession number:20080411059103

Title:20-GHz optical pulse source based on cascaded electroabsorption modulators

Authors:Liu, Yuanshan (1); Zhang, Jianguo (1); Zhao, Wei (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Acad. of Sci., Xi'an 710068, China; (2) Graduate School, Chinese Acad. of Sci., Beijing 100039, China; (3) Department of Electrical, Computer, and Communications Engineering, London South Bank University, London SE16EN, United Kingdom

Corresponding author:Liu, Y.

Source title:Chinese Optics Letters

Abbreviated source title:Chin. Opt. Lett.

Volume:5

Issue:12

Issue date:December 2007

Publication year:2007

Pages:700-702

Language:English

ISSN:16717694

Document type:Journal article (JA)

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

Abstract:A high-quality low-timing-jitter 20-GHz optical pulse train is generated by using two cascaded sinusoidally driven electroabsorption modulators (EAMs) at very low bias voltage of-0.8 V in conjunction with a tunable distributed feedback (DFB) semiconductor laser. An approximate transform-limited optical pulse, with the pulse width less than 7 ps, the spectral width of 0.3 nm, and the side-mode suppression ratio (SMSR) above 20 dB, is obtained by tuning the optical delay line.

Number of references:13

Main heading:Laser pulses

Controlled terms:Bias voltage - Distributed feedback lasers - Electroabsorption modulators - Semiconductor lasers - Timing jitter

Uncontrolled terms:Optical delay line - Optical pulse train - Side mode suppression ratio (SMSR)

Classification code:741.3 Optical Devices and Systems - 744.1 Lasers, General - 744.4.1 Semiconductor Lasers

Treatment:Experimental (EXP)

Database:Compendex

Accession number:20074310888816

Title:Displacement analyzing and support position optimizing of the main mirror with backside support

Authors:Chen, Yong-Cong (0); Hu, Yong-Ming (0); Li, Ying-Cai (0); Che, Rong (0)

Corresponding author:Chen, Y.-C.(yc_ch@163.com)

Corr. author affiliation: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:36

Issue:9

Issue date:September 2007

Publication year:2007

Pages:1730-1733

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, 710068, China

Abstract:The static analysis on of the main mirror with backside support was carried out by the finite element method based on ANSYS. Three points and nine points supports were studied in order to obtain the displacement of the reflection surface. The PV/RMS value was calculated using Homogeneous Coordinate Transformation Theory and Least Square Method. Those values were made the target function to find out the optimal backside support position.

Number of references:11

Database:Compendex

Accession number:20072410652478

Title:Study of temperature compensated FBG pressure sensor based on widened bandwidth

Authors:Wei, Ting (1); Qiao, Xue-Guang (1); Jia, Zhen-An (1); Fu, Hai-Wei (1); Wang, Hong-Liang (1)

Author affiliation:(1) Shaanxi Key Laboratory of Photoelectric Sensing Logging, Xi'an Petroleum University, Xi'an 710065, China; (2) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Science, Xi'an 710068, China

Corresponding author:Wei, T.(yolandemm@sohu.com)

Source title:Guangdianzi Jiguang/Journal of Optoelectronics Laser

Abbreviated source title:Guangdianzi Jiguang

Volume:18

Issue:4

Issue date:April 2007

Publication year:2007

Pages:418-421

Language:Chinese

ISSN:10050086

CODEN:GUJIE9

Document type:Journal article (JA)

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

Abstract:A novel temperature compensated FBG pressure sensor based on round metal diaphragm is presented and studied theoretically and experimentally. FBG was affixed along the radius of diaphragm. The pressure was measured by the bandwidth of FBG because the bandwidth action is insensitive to temperature. This approach showed a pressure resolution of ± 0.18 MPa and a pressure sensitivity of 0.28 nm/MPa in the range 0.0 MPa to 7.2 MPa when the spectral resolution is 0.05 nm for spectral analyzer. The experimental results match the theoretical analysis well.

Number of references:10

Main heading:Pressure sensors

Controlled terms:Bandwidth - Fiber Bragg gratings - Pressure measurement - Spectral resolution

Uncontrolled terms:Chirped effect - Compensated fiber Bragg grating (FBG) pressure measurement - Spectral analyzer

Classification code:741.1 Light/Optics - 741.3 Optical Devices and Systems - 944.3 Pressure Measuring Instruments - 944.4 Pressure Measurements

Treatment:Experimental (EXP)

Database:Compendex

Accession number:20072710692394

Title:Step recovery diodes pulse generator in the high power laser system

Authors:Hang, Hai (0); Ouyang, Xian (0); Liu, Bai-Yu (0); Yang, Wen-Zheng (0); Hou, Xun (0)

Corresponding author:Hang, H.(ehang@263.net)

Corr. author affiliation:State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Acad. of Sci., Xi'an 710068, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:36

Issue:5

Issue date:May 2007

Publication year:2007

Pages:777-779

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, 710068, China

Abstract:An ultra-fast square pulse generator has been developed by using step recovery diodes (SRDs). This circuit mainly includes two parts: the pulse producing part based on an avalanche transistor and the pulse sharpening part based on step recovery diodes. The circuit can generate an electrical square pulse with the rise time of 160 ps, the pulse full-width at half maximum (FWHM) of 5 ns, the voltage amplitude of 23 V, and in 50Ω load. The trig jitter is less than 5 ps (RMS) and the flatness of top is better than 5%. This pulse generator has been applied in the so-called 'Shenguang' high power laser system successfully.

Number of references:10

Database:Compendex

Accession number:20073310766818

Title:Stray light analysis of the lunar-based optical telescope

Authors:Li, Ting (0); Yang, Jian-Feng (0); Ruan, Ping (0); Jiang, Xiao-Jun (0)

Corresponding author:Li, T.(xigong99@163.com)

Corr. author affiliation:Xi'an Institute of Optics and Precision Mechanics, Chinese Acad. of Sci., Xi'an 710119, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:36

Issue:SUPPL.

Issue date:June 2007

Publication year:2007

Pages:136-141

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, 710068, China

Abstract:The efficiency and data quality of lunar-based astronomical observations should be far more superior compare with ground-based observations due to the lack of the atmospheric effect, and placing an optical telescope on the lunar surface can offer the potential for solving many of outstanding problems in astrophysics, such as asteroseismological research and extrasolar planet detections. Stray light analysis is one of crucial technologies to ensure the image quality of Lunar-based Optical Telescope (LOT). The detailed stray light analysis of the Lunar-based Optical Telescope is described in this paper. Firstly the first and second order scattering paths are determined, and proposals for modifying primary and secondary baffles are separately brought forward according to the important stray light paths. Secondly stray light analysis of the revised system is done and the PST values of the system are recalculated. Compared with before modification, the PST values have been reduced 1-2 orders, and PST values are less than 10-10 when off-axis angle is larger than 30°. It satisfies the requirement of the system.

Number of references:13

Database:Compendex

Accession number:20073710811572

Title:Phonon-limited mobility in two-dimensional semiconductors with spin-orbit coupling

Authors:Chen, Lei (1); Ma, Zhongshui (1); Cao, J.C. (2); Zhang, T.Y. (3); Zhang, Chao (4)

Author affiliation:(1) School of Physics, Peking University, Beijing 100871, China; (2) State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Science, Shanghai 200050, China; (3) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Science, Xi'an 710068, China; (4) School of Engineering Physics, University of Wollongong, NSW 2522, Australia

Corresponding author:Chen, L.

Source title:Applied Physics Letters

Abbreviated source title:Appl Phys Lett

Volume:91

Issue:10

Issue date:2007

Publication year:2007

Article number:102115

Language:English

ISSN:00036951

CODEN:APPLAB

Document type:Journal article (JA)

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

Abstract:The authors demonstrate that the Rashba spin-orbit interaction in low-dimensional semiconductors can enhance or reduce the electron-phonon scattering rate by as much as 25%. The underlying mechanism is that the electron-phonon scattering phase space for the upper (lower) Rashba band is significantly enhanced (suppressed) by the spin-orbit interaction. While the scattering time decreases for the upper level, the mobility of the level increases due to an additional term in the electron velocity. © 2007 American Institute of Physics.

Number of references:26

Main heading:Semiconductor materials

Controlled terms:Electron scattering - Electron velocity analyzers - Molecular interactions - Phase space methods - Phonons

Uncontrolled terms:Electron-phonon scattering - Low-dimensional semiconductors - Rashba band - Spin-orbit interaction

Classification code:712.1 Semiconducting Materials - 751.1 Acoustic Waves - 921 Mathematics - 931.3 Atomic and Molecular Physics - 942.1 Electric and Electronic Instruments

Treatment:Theoretical (THR)

DOI:10.1063/1.2783203

Database:Compendex

Accession number:20080111005510

Title:Multiple-slit streak tube

Authors:Tian, Jin-Shou (0); Zhao, Bao-Sheng (0); Wen, Wen-Long (0); Wang, Jun-Feng (0); Wu, Jian-Jun (0); Wei, Yong-Lin (0); Chen, Zheng-Kai (0); Liu, Hu-Lin (0); Li, Si-Ning (0); Xu, Bei-Lei (0); Meng, Xiao-Yan (0)

Corresponding author:Tian, J.-S.(tianjs@opt.ac.cn)

Corr. author affiliation:Xi'an Institute of Optics and Precision Mechanics, CAS, Xi'an 710119, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:36

Issue:11

Issue date:November 2007

Publication year:2007

Pages:1979-1982

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, 710068, China

Abstract:A large dynamic range, minor streak image tube has been designed, which can work in single slit mode and multiple slit mode, the temporal resolution of this streak tube is 2.6 ps, and its total length is about 196.352 mm. It can be used not only in the traditional high speed diagnosis fields such as inertial confined fusion, plasma physics, laser technique, photobiology and photo-chemistry et al, but also in that of detecting the velocity of missile, searching under-marine target and early-alarming, which can obtain the 3D spatial and 1D intensity information of the target simultaneously.

Number of references:8

Database:Compendex

Accession number:20073310766848

Title:Design of speed-adjustment control system for DC motor of aero film development

Authors:Luo, Dong-Feng (0); Wei, Ming-Zhi (0); Da, Zheng-Shang (0)

Corresponding author:Luo, D.-F.(ldf1983@163.com)

Corr. author affiliation:Xi'an Institute of Optics and Precision Mechanics, Chinese Acad. of Sci., Xi'an 710119, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:36

Issue:SUPPL.

Issue date:June 2007

Publication year:2007

Pages:262-265

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, 710068, China

Abstract:A circuit control system of speed adjustment for DC motor is designed based on double 89C51 singlechips, and the matched software was programmed to manipulate, digital PID also is realized in the software to control stably. The rules of PID control are obtained by analyzing the stability of system. The parameters of PID are confirmed by large numbers of test. And the practice shows that the control system operates steadily and control precision is surpassed. The control precision of low speed is 3%, and high speed is 1%.

Number of references:10

Database:Compendex

Accession number:20072010605634

Title:One-dimensional incoherently coupled grey solitons in two-photon photorefractive media

Authors:Lu, K. (1); Zhao, W. (1); Yang, Y. (1); Yang, Y. (1); Zhang, M. (1); Rupp, R.A. (2); Fally, M. (2); Zhang, Y. (3); Xu, J. (4)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academic of Sciences, Xi'an 710068, China; (2) Vienna University, Physics Faculty, Nonlinear Physics Group, Boltzmanngasse 5, 1090 Wien, Austria; (3) Department of Electronic Science and Technology, Xi'an Jiaotong University, Xi'an 710049, China; (4) Department of Physics, Nankai University, Tianjin 300071, China

Corresponding author:Rupp, R.A.(romano.rupp@univie.ac.at)

Source title:Applied Physics B: Lasers and Optics

Abbreviated source title:Appl Phys B

Volume:87

Issue:3

Issue date:May 2007

Publication year:2007

Pages:469-473

Language:English

ISSN:09462171

CODEN:APBOEM

Document type:Journal article (JA)

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

Abstract:We show that grey solitons, grey-grey soliton pairs, and multi-component grey solitons can be realized in two-photon photorefractive media. The results for soliton pairs and multi-component solitons are derived under the assumption that the carrier beams share the same polarization, wavelength, and are mutually incoherent. © Springer-Verlag 2007.

Number of references:25

Main heading:Solitons

Controlled terms:Light polarization - Photons - Photorefractive materials - Wavelength

Uncontrolled terms:Carrier beams - Grey solitons - Photorefractive media

Classification code:711 Electromagnetic Waves - 741.1 Light/Optics - 741.3 Optical Devices and Systems - 931.3 Atomic and Molecular Physics

Treatment:Theoretical (THR)

DOI:10.1007/s00340-007-2629-3

Database:Compendex

Accession number:20082811367764

Title:The simulation of wavefront coding imaging systems

Authors:Hui, Bin (1); Li, Jingzhen (1); Wu, Qingyang (1); Wen, Desheng (2)

Author affiliation:(1) College of Electronic Science and Technology, Shenzhen University, Shenzhen, Guangdong province, China; (2) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Science, Xi'an, China

Corresponding author:Hui, B.(huibinhui@sina.com)

Source title:IEEE ICIT 2007 - 2007 IEEE International Conference on Integration Technology

Abbreviated source title:IEEE ICIT - IEEE Int. Conf. Integr. Technol.

Monograph title:IEEE ICIT 2007 - 2007 IEEE International Conferenceon Integration Technology

Issue date:2007

Publication year:2007

Pages:711-713

Article number:4290412

Language:English

ISBN-10:1424410924

ISBN-13:9781424410927

Document type:Conference article (CA)

Conference name:2007 IEEE International Conference on Integration Technology, ICIT 2007

Conference date:March 20, 2007 - March 24, 2007

Conference location:Shenzhen, China

Conference code:72511

Sponsor:IEEE Robotics and Automation Society; The Chinese University of Hong Kong; Shenzhen Bureau of Science, Technology and Information; CAS Shenzhen Institute of Advanced Technology; CAS/CUHK Shenzhen Institute of Advanced Integration Technology

Publisher:Inst. of Elec. and Elec. Eng. Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States

Abstract:In the domain of reconnaissance, remote sensing, etc., people want to get high resolution images. There is a conflict between the resolution and the optical system defocus. In order to acquire high resolution images, some methods are taken to minish the defocus, but these ways affect the cost and weight of the system. In this paper, a novel technology was described for extending the depth of focus of the incoherent optical system; meanwhile this technology does not decrease the resolution of the images. In this technology, the aspheric optical element is used to encode the images as well as the digital signal processing is used to decode the images. It is significant for optical remote sensors to acquire high resolution images under complicated space environment. © 2007 IEEE.

Number of references:4

Main heading:Optical systems

Controlled terms:Detectors - Digital signal processing - Image enhancement - Imaging systems - Integration - Optical design - Optical sensors - Optoelectronic devices - Programming theory - Remote sensing - Signal processing - Space optics - Technology

Uncontrolled terms:(OTDR) technology - Aspheric - defocus - Depth-of-focus (DOF) - digital signals - High-resolution (HR) images - In order - Incoherent optical system - Integration technologies - International (CO) - international conferences - Optical (PET) (OPET) - Optical elements - Optical remote sensors - Space environments - Wavefront coding

Classification code:921.2 Calculus - 914 Safety Engineering - 901 Engineering Profession - 746 Imaging Techniques - 741.3 Optical Devices and Systems - 741.1 Light/Optics - 741 Light, Optics and Optical Devices - 731.1 Control Systems - 721.1 Computer Theory, Includes Formal Logic, Automata Theory, Switching Theory, Programming Theory - 716.1 Information Theory and Signal Processing - 656.1 Space Flight

DOI:10.1109/ICITECHNOLOGY.2007.4290412

Database:Compendex

Accession number:20072010602640

Title:Modal analysis of rotating mirror clipped by the elastic bearings for ultra-high speed photography

Authors:Huang, Hong-Bin (1); Li, Jing-Zhen (1); Gong, Xiang-Dong (1); Sun, Feng-Shan (2); Ai, Yue-Xia (1); He, Tie-Feng (1)

Author affiliation:(1) College of Science and Technology, Shenzhen University, Shenzhen 518060, China; (2) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710068, China

Corresponding author:Huang, H.-B.(huanghb@szu.edu.cn)

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

Abbreviated source title:Qiangjiguang Yu Lizishu

Volume:19

Issue:2

Issue date:February 2007

Publication year:2007

Pages:225-228

Language:Chinese

ISSN:10014322

CODEN:QYLIEL

Document type:Journal article (JA)

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

Abstract:The modal analysis method studying the elastic support rotating mirror for ultra-high speed photography was presented. With the finite element technology, the first and second modes of the three-faced aluminum alloy mirror were simulated under the stiff and elastic bearings condition. The simulation results show that the only two resonance points are in the speed ranges of 2.5 × 105 to 2.6 × 105 r/min and 2.6 × 105 to 2.7 × 105 r/min respectively, both resonances are first order flexure vibrations. The vibration of the first order modal occurs in vertical plane and that of the second occurs in level plane. The simulation results under the elastic supporting hypothesis are more close to that of the experimental results.

Number of references:7

Main heading:High speed photography

Controlled terms:Aluminum alloys - Bearings (structural) - Computer simulation - Elasticity - Finite element method - Mirrors - Modal analysis - Photography - Resonance - Vibrations (mechanical)

Uncontrolled terms:Aluminum alloy rotating mirror - Elastic bearing - First order flexure vibration - Ultra high speed photography

Classification code:931.1 Mechanics - 921.6 Numerical Methods - 742.1 Photography - 741.3 Optical Devices and Systems - 541.2 Aluminum Alloys - 421 Strength of Building Materials; Mechanical Properties - 408.2 Structural Members and Shapes

Treatment:Applications (APP)

Database:Compendex

Accession number:20073310766820

Title:Hybrid diffractive-refractive liquid lens for variable-focus optical system

Authors:Bao, Yun (0); Tian, Wei-Jian (0); Zhang, Wei (0)

Corresponding author:Bao, Y.(donaldbaoyun@yahoo.com.cn)

Corr. author affiliation:Lab. of Information and Photonic Technology, Xi'an Institute of Optics and Precision Mechanics, Chinese Acad. of Sci., Xi'an 710119, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:36

Issue:SUPPL.

Issue date:June 2007

Publication year:2007

Pages:146-148

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, 710068, China

Abstract:The hybrid diffractive-refractive variable-focus liquid lens composed of a liquid refractor and a binary optical lens is demonstrated in this letter. The focal length adjustment is achieved by changing the radius of curvature of the refractive lens without any mechanical moving parts. The main advantage of the lens is that it could account for the chromatic aberration when the shape of the liquid lens is changed. Finally, a model of the hybrid diffractive-refractive variable-focus liquid lens is designed, showing that it is excellently suited for use in portable applications.

Number of references:10

Database:Compendex

Accession number:20073110726863

Title:The study of satellite SAR imagery geo-referencing based on satellite parameters prediction

Authors:Li, Li-Gang (1); Wu, Yi-Rong (1); Liu, Bo (2); Peng, Hai-Liang (1); You, Hong-Jian (1); Zhou, Qiang (1)

Author affiliation:(1) National Key Laboratory of Microwave Imaging Technology, Institute of Electronics, Chinese Acad. of Sci., Beijing 100080, China; (2) Xi'an Institute of Optics and Precision Mechanics, Chinese Acad. of Sci., Xi'an 710068, China; (3) Graduate School, Chinese Acad. of Sci., Beijing 100039, China; (4) Center for Space Science and Applied Research, Chinese Acad. of Sci., Beijing 100080, China

Corresponding author:Li, L.-G.

Source title:Dianzi Yu Xinxi Xuebao/Journal of Electronics and Information Technology

Abbreviated source title:Dianzi Yu Xinxi Xuebao

Volume:29

Issue:7

Issue date:July 2007

Publication year:2007

Pages:1691-1694

Language:Chinese

ISSN:10095896

CODEN:DKXUEC

Document type:Journal article (JA)

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

Abstract:In this paper a new method is proposed to solve the geo-referencing problem of satellite SAR imagery without GCPs by considering the consecutive imaging parameters. That is, the imaging parameters of consecutive imagery are calculated based on GCPs in order to set up the prediction formula, and then the imaging parameters of satellite SAR imagery can be forecasted. Thus the radar collinearity equation model is introduced to precisely locate imagery. RADARSAT imagery is used to test and geo-referencing accuracy reaches 6-7 pixels.

Number of references:5

Main heading:Synthetic aperture radar

Controlled terms:Pixels - Radar imaging - Satellites

Uncontrolled terms:Georeferencing - Ground control points - Imaging parameter - Parameter prediction - Radar collinearity equation - RADARSAT

Classification code:655.2 Satellites - 716.2 Radar Systems and Equipment

Treatment:Applications (APP); Experimental (EXP)

Database:Compendex

Accession number:20072010596573

Title:Microstructure and optical properties of colloidal crystals based on self-assembly of monodispersed SiO2 microspheres

Authors:Huang, Chang-Qing (0); Tian, Wei-Jian (0); Sun, Ting (0); Wang, Yaoxiang (0); Dong, Fa-Xin (0)

Corresponding author:Huang, C.-Q.(hchangq@tom.com)

Corr. author affiliation:Laboratory of Information and Photonics, Xi'an Institute of Optics and Precision Mechanics, Xi'an 710068, China

Source title:Guangxue Jishu/Optical Technique

Abbreviated source title:Guangxue Jishu

Volume:33

Issue:2

Issue date:March 2007

Publication year:2007

Pages:206-208

Language:Chinese

ISSN:10021582

CODEN:GJISEP

Document type:Journal article (JA)

Publisher:Optical Technique, Beijing, China

Abstract:Photonic crystals have an attraction due to their prominent optical properties such as photonic band gap and photonic localization. The self-assembly of colloidal microspheres into ordered three-dimensional (3D) structures with photonic band gap located in the visible or infrared bands has been a convenient and effective method because of its simple preparation process and low cost. The vertical deposition method is used to prepare 3D photonic crystals films, whose microstructure and optical properties are determined using scanning electron microscopy (SEM) and UV-visible-IR spectrometer. The SEM results show that the self-assembly films have ordered structures in the 3D with the packed plane parallel to the solid substrates. The transmittance spectra reveal that photonic crystals films possess obvious photonic band gap properties and central wavelengths of the stopgap locate at 956 nm. The diffracted peak widths narrow and the peak depths increase as increasing volume fractions of SiO2 microspheres in colloidal solution, which mean better photonic band gap properties. Furthermore, the dependence of the central wavelengths on the angle between the incident light and the normal vector of the substrates is also measured, and the result is good agreement with the theoretical prediction.

Number of references:13

Database:Compendex

Accession number:20073110743942

Title:Nonlinear optical properties of semiconductor quantum wells under intense terahertz radiation

Authors:Zhang, T.Y. (1); Zhao, W. (1); Liu, X.M. (1); Zhang, C. (2)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, 17 Xinxi Road, Xi'an 710119, China; (2) School of Engineering Physics, University of Wollongong, NSW 2522, Australia

Corresponding author:Zhang, T.Y.(tyzhang@opt.ac.cn)

Source title:Applied Physics Letters

Abbreviated source title:Appl Phys Lett

Volume:91

Issue:4

Issue date:2007

Publication year:2007

Article number:041909

Language:English

ISSN:00036951

CODEN:APPLAB

Document type:Journal article (JA)

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

Abstract:The nonlinear optical properties of semiconductor quantum wells driven by intense in-plane terahertz electric fields are investigated theoretically by employing the extended semiconductor Bloch equations. The dynamical Franz-Keldysh effect of the optical absorption near the band edge is analyzed with Coulomb correlation among the carriers included. The in-plane terahertz field induces a variety of behavior in the absorption spectra, including terahertz replicas of the (dark) 2p exciton and terahertz sidebands of the 1s exciton. The dependence of these interesting features on the intensity, frequency, and phase of the terahertz field is explored in detail. © 2007 American Institute of Physics.

Number of references:24

Main heading:Semiconductor quantum wells

Controlled terms:Absorption spectra - Excitons - Light absorption - Nonlinear optics - Optical properties

Uncontrolled terms:Coulomb correlation - Franz-Keldysh effect - Semiconductor Bloch equations - Terahertz replicas

Classification code:711.2 Electromagnetic Waves in Relation to Various Structures - 712.1 Semiconducting Materials - 714.2 Semiconductor Devices and Integrated Circuits - 741.1.1 Nonlinear Optics

Treatment:Theoretical (THR); Experimental (EXP)

DOI:10.1063/1.2760040

Database:Compendex

Accession number:20073810817241

Title:Identical dual-wavelength fiber Bragg gratings

Authors:Liu, Xueming (1); Gong, Yongkang (1); Wang, Leiran (1); Wang, Tao (1); Zhang, Tongyi (1); Lu, Keqing (1); Zhao, Wei (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710068, China

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

Source title:Journal of Lightwave Technology

Abbreviated source title:J Lightwave Technol

Volume:25

Issue:9

Issue date:September 2007

Publication year:2007

Pages:2706-2710

Language:English

ISSN:07338724

CODEN:JLTEDG

Document type:Journal article (JA)

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

Abstract:In this paper, identical dual-wavelength fiber Bragg gratings (FBGs) are theoretically proposed and experimentally demonstrated. On the assistance of the Fourier theory, the gratings with symmetrical spectrum are designed in the case of weak refractive-index modulations. With the perturbation technique, the results achieved in the previous step are modified to meet the strong refractive-index modulation gratings. Based on the coupled-mode theory, we have optimized and achieved the identical dual-wavelength FBGs with two channels that have equal bandwidth and even strength. We have also experimentally demonstrated the proposed FBGs, and the experimental results are compared with theoretical predictions with good agreement. © 2007 IEEE.

Number of references:27

Main heading:Fiber Bragg gratings

Controlled terms:Bandwidth - Communication channels (information theory) - Fourier transforms - Light modulation - Optimization - Perturbation techniques - Refractive index - Wavelength

Uncontrolled terms:Coupled-mode theory - Dual-wavelength - Refractive-index modulation

Classification code:716.1 Information Theory and Signal Processing - 741.1 Light/Optics - 741.3 Optical Devices and Systems - 921.3 Mathematical Transformations - 921.5 Optimization Techniques - 921.6 Numerical Methods

Treatment:Experimental (EXP)

DOI:10.1109/JLT.2007.902101

Database:Compendex

Accession number:20072310638634

Title:Synthesis of novel hexagon SnO<inf>2</inf> nanosheets in ethanol/water solution by hydrothermal process

Authors:Yang, Xinghua (1); Wang, Lili (1)

Corresponding author:Wang, L.(wanglili_212@yahoo.com.cn)

Source title:Materials Letters

Abbreviated source title:Mater Lett

Volume:61

Issue:17

Issue date:July 2007

Publication year:2007

Pages:3705-3707

Language:English

ISSN:0167577X

CODEN:MLETDJ

Document type:Journal article (JA)

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

Abstract:The novel hexagon SnO<inf>2</inf> nanosheets are successfully synthesized in ethanol/water solution by hydrothermal process. The samples are characterized by X-ray diffraction (XRD), infrared ray (IR) and transmission electron microscopy (TEM). By changing the reaction conditions, the size and the morphology can be controlled. Comparison experiments show that when the temperature increased from 140 °C to 180 °C, the edge length of the hexagon nanoparticles increases from 300-450 nm to 700-900 nm. On the other hand, by adjusting the ratios of water to ethanol from 2 to 0.5, SnO<inf>2</inf> nanoparticles with different morphologies of triangle and sphere are obtained. When the concentration of NaOH is increased from 0.15 M to 0.30 M, a hollow ring structure can be obtained. © 2006 Elsevier B.V. All rights reserved.

Number of references:31

Main heading:Nanosheets

Controlled terms:Ethanol - Hydrothermal synthesis - Tin oxides - Transmission electron microscopy - X ray diffraction analysis

Uncontrolled terms:Hexagon nanosheets - Water solution

Classification code:933 Solid State Physics - 804.2 Inorganic Compounds - 804.1 Organic Compounds - 802.2 Chemical Reactions - 801 Chemistry - 761 Nanotechnology - 741.3 Optical Devices and Systems

Treatment:Theoretical (THR); Experimental (EXP)

DOI:10.1016/j.matlet.2006.12.022

Database:Compendex

Accession number:20072510663812

Title:A hinge bending model for a sagittal focusing crystal monochromator

Authors:Deng, Xiaoguo (0); Zhou, Sizhong (0); Xiong, Rensheng (0)

Corresponding author:Deng, X.

Corr. author affiliation:Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710068, China

Source title:He Jishu/Nuclear Techniques

Abbreviated source title:He Jishu

Volume:30

Issue:5

Issue date:May 2007

Publication year:2007

Pages:411-413

Language:Chinese

ISSN:02533219

CODEN:NUTEDL

Document type:Journal article (JA)

Publisher:Science Press, Beijing, 100085, China

Abstract:Hinge technology is used to study focusing behavior of a sagittal focusing crystal monochromator. A mathematical model describing the relationship between actuator displacement and dynamic bending radii has been established by studying geometry parameter of the hinge. Influential factors on resolution of the bending radii were analyzed. The model has been successfully applied in developing a sagittal focusing crystal monochromator for the SSRF (Shanghai synchrotron radiation facility) project. The testing result indicated that focusing spot of the sagittal focusing crystal monochromator achieved satisfactorily the design requirement.

Number of references:6

Database:Compendex

Accession number:20073410777718

Title:Pose simulation and calibration of objects in door for high-speed TV measurement system

Authors:Li, Xia (0); Zhao, Jian-Ke (0)

Corresponding author:Li, X.(lixia@opt.ac.cn)

Corr. author affiliation:Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710068, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:36

Issue:7

Issue date:July 2007

Publication year:2007

Pages:1360-1363

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, 710068, China

Abstract:A method about space object pose measurement by high-speed TV measurement system is introduced in which measurement rack, collimator and graphics plates with different angle are used to simulate space locomotory object. At the same time, high precision theodolite is used to collimate the locomotory object s pose. Also, the precision analysis of the collimation method is done.

Number of references:5

Database:Compendex

Accession number:20072110607156

Title:Picosecond ultra-wideband short pulse radiated by antenna arrays

Authors:Ruan, Chi (1); Zhao, Wai (1); Chen, Guo-Fu (1); Zhu, Shao-Lan (1); Liu, Bai-Yu (1); Yang, Hong-Chun (2); Ruan, Cheng-Li (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 Shaaxi 710068, China; (2) University of Electronic Science and Technology of China, Chengdu Sichuan 610054, China

Corresponding author:Ruan, C.

Source title:Microwave and Optical Technology Letters

Abbreviated source title:Microwave Opt Technol Lett

Volume:49

Issue:5

Issue date:May 2007

Publication year:2007

Pages:1148-1151

Language:English

ISSN:08952477

CODEN:MOTLEO

Document type:Journal article (JA)

Publisher:John Wiley and Sons Inc., P.O.Box 18667, Newark, NJ 07191-8667, United States

Abstract:This report presents the experiments to study the characteristics of the picosecond ultra-wideband pulses coherent radiation. The testing involves bow-tie horn antennas for both the transmitting and receiving antenna. Sixteen channels of electrical pulses with 290 ps duration and jitter <30 ps have been used. The antenna arrays with various frames of 4 × 1, 4, × 3, 4 × 4 are employed to radiate the pulses. The receiving antenna measures the electrical field in different distance from the transmitting antennas array. The results show that if the pulses are in coherent condition, the peak power pulse of output by antennas array with N elements are N2 of that of the single element antenna. © 2007 Wiley Periodicals, Inc.

Number of references:8

Main heading:Antenna arrays

Controlled terms:Channel capacity - Horn antennas - Jitter - Receiving antennas

Uncontrolled terms:Electromagnetic pulses - Peak power pulses - Ultra-wideband short pulses

Classification code:716 Telecommunication; Radar, Radio and Television - 716.1 Information Theory and Signal Processing - 717 Optical Communication

Treatment:Theoretical (THR); Experimental (EXP)

DOI:10.1002/mop.22391

Database:Compendex

Accession number:20071410527071

Title:High-quality GaN films grown on surface treated sapphire substrate

Authors:Peng, D.S. (1); Feng, Y.C. (3); Wang, W.X. (3); Liu, X.F. (3); Shi, W. (3); Niu, H.B. (3)

Author affiliation:(1) Institute of Optoelectronics, Shenzhen University, Shenzhen 518060, China; (2) XiaAn Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Xi'an 710068, China; (3) Graduate School, Chinese Academy of Sciences, Beijing 100864, China

Corresponding author:Niu, H.B.(HBNiu@szu.edu.cn)

Source title:Journal of Physics D: Applied Physics

Abbreviated source title:J Phys D

Volume:40

Issue:4

Issue date:Febrary 21, 2007

Publication year:2007

Pages:1108-1112

Article number:030

Language:English

ISSN:00223727

E-ISSN:13616463

CODEN:JPAPBE

Document type:Journal article (JA)

Publisher:Institute of Physics Publishing, Temple Back, Bristol, BS1 6BE, United Kingdom

Abstract:High-quality GaN films with low dislocation density have been successfully grown on the c-plane specially treated surface of the sapphire substrate. The vapour phase epitaxy starts from the regions with no etched pits where there are some micro-sidesteps to help to nucleate and then spreads laterally with increasing V/III ratio to form continuous GaN films. The full-widths at half-maximum of the x-ray diffraction curves for the GaN films grown on the treated surface of the sapphire substrate in the (0 0 0 2) plane and the (1 0 -1 2) plane are as low as 208.80 arcsec and 320.76 acrsec, respectively, and the etch-pit density of those etched in molten KOH is reduced to 5.5 × 10 5 cm-2. The surface of the epilayer exhibits atomically smooth, whose root mean square roughness is found to be 0.2863 nm.The epilayer grown on the treated surface of the sapphire substrate exhibits excellent optical quality, in which the yellow luminescence is nearly invisible in the photoluminescence spectrum. Compared with the conventional epitaxial lateral overgrowth technique, the technology is much simpler and the crystallographic tilt can also be greatly decreased. © 2007 IOP Publishing Ltd.

Number of references:13

Main heading:Gallium nitride

Controlled terms:Epilayers - Epitaxial films - Epitaxial growth - Full width at half maximum - Photoluminescence - Sapphire - Surface treatment

Uncontrolled terms:Epitaxial lateral overgrowth - Photoluminescence spectrum - Sapphire substrates

Classification code:933.1.2 Crystal Growth - 931 Classical Physics; Quantum Theory; Relativity - 921 Mathematics - 802.3 Chemical Operations - 741.1 Light/Optics - 712.1.2 Compound Semiconducting Materials - 482.2.1 Gems

Treatment:Experimental (EXP)

DOI:10.1088/0022-3727/40/4/030

Database:Compendex

Accession number:20141817656523

Title:A 355 TW femtosecond Ti:Sapphire laser facility with three stage amplifiers

Authors:Wang, Zhaohua (1); Wei, Zhiyi (1); Zhang, Jie (1); Wang, Peng (1); Ling, Weijun (2); Zhu, Jiangfeng (1); Tian, Jinrong (1)

Source title:Optics InfoBase Conference Papers

Abbreviated source title:Opt.InfoBase Conf. Papers

Monograph title:Photonic Applications Systems Technologies Conference, PhAST 2007

Issue date:2007

Publication year:2007

Language:English

E-ISSN:21622701

ISBN-10:1557528349

ISBN-13:9781557528346

Document type:Conference article (CA)

Conference name:Photonic Applications Systems Technologies Conference, PhAST 2007

Conference date:May 8, 2007 - May 8, 2007

Conference location:Baltimore, MD, United states

Conference code:104735

Publisher:Optical Society of America

Number of references:2

Main heading:Stages

Uncontrolled terms:Femtoseconds - Peak power - Three-stage amplifiers - Ti: Sapphire laser

Classification code:402.2 Public Buildings

Database:Compendex

Accession number:20080111005540

Title:Study of character of the forward scattered light of bubbles based on Mie's light scattering theory

Authors:Xiang, Jian-Sheng (0); He, Jun-Hua (0); Chen, Min (0); Chen, Liang-Yi (0)

Corresponding author:Xiang, J.-S.(gogoman2000@126.com)

Corr. author affiliation:Xi'an Institute of Optics and Precision Mechanics, CAS, Xi'an 710119, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:36

Issue:11

Issue date:November 2007

Publication year:2007

Pages:2111-2114

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, 710068, China

Abstract:The forward scattering light is accepted by CMOS instead of traditional photoelectric detector in the experiment. The scattering lights in different scattered angles are related to the different light rings in the collection images after analyzing in geometry optics and image processing technology. The arbitrary intensity of scattering light can be acquired by calculating the pixel value of different light rings, and the transformation of scattering light can be acquired. The intensity of scattering light of bubbles can be calculated in all angles by Mie's light scattering theory. By comparing the results of experiment and Mie's theory, the transformation of scattering light intensity can be acquired exactly by using CMOS and image processing.

Number of references:7

Database:Compendex

Accession number:20064910295791

Title:Photochromic diarylethene for polarization holographic optical recording

Authors:Pu, Shouzhi (1); Yang, Tianshe (1); Yao, Baoli (2); Wang, Yingli (2); Lei, Ming (2); Xu, Jingkun (1)

Author affiliation:(1) Jiangxi Key Laboratory of Organic Chemistry, Jiangxi Science and Technology, Normal University, Nanchang, 330013, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Science, Xi'an, 710068, China

Corresponding author:Pu, S.(pushouzhi@tsinghua.org.cn)

Source title:Materials Letters

Abbreviated source title:Mater Lett

Volume:61

Issue:3

Issue date:February 2007

Publication year:2007

Pages:855-859

Language:English

ISSN:0167577X

CODEN:MLETDJ

Document type:Journal article (JA)

Publisher:Elsevier

Abstract:Photochromic diarylethene, 1,2-bis[2-methyl-5-(3-fluorophenyl)-3-thienyl] perfluorocylcopentene (1a), was synthesized. The compound showed good photochromic reactions both in solution and in PMMA matrix by photo-irradiation. Using the diarylethene 1b/PMMA film as recording medium and a He-Ne laser for recording and readout, four types of polarization holographic optical recording were accomplished for the first time. The results show that the orthogonal circular polarization recording is the best method for holographic optical recording when the target photochromic diarylethene is used as recording material. © 2006.

Number of references:34

Main heading:Olefins

Controlled terms:Holography - Lasers - Light polarization - Optical recording - Photochromism

Uncontrolled terms:Diarylethene - Orthogonal circular polarization - Photochromic reactions - Polarization holographic optical recording

Classification code:741.1 Light/Optics - 741.3 Optical Devices and Systems - 743 Holography - 744.1 Lasers, General - 804.1 Organic Compounds

Treatment:Experimental (EXP)

DOI:10.1016/j.matlet.2006.06.084

Database:Compendex

Accession number:20074310888752

Title:Stray light reduction analysis in single star simulator

Authors:Yan, Ya-Dong (0); Chen, Liang-Yi (0); Cang, Yu-Ping (0); He, Jun-Hua (0)

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

Corr. author affiliation:Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China

Source title:Guangdian Gongcheng/Opto-Electronic Engineering

Abbreviated source title:Guangdian Gongcheng

Volume:34

Issue:9

Issue date:September 2007

Publication year:2007

Pages:21-24+54

Language:Chinese

ISSN:1003501X

CODEN:GUGOEC

Document type:Journal article (JA)

Publisher:Chinese Academy of Sciences, Chengdu, Sichuan, 610209, China

Abstract:To suppress the great amount of stray lights in the main pipe of single star simulator, a method that sets multi-level cut-off diaphragms to constrain those stray lights is presented. The position and aperture of each diaphragm are set based on the design principle of multi-level cut-off diaphragm. Tracepro, which is a powerful ray tracing program, is used to estimate the efficiency of the design. The experimental results indicate that multi-level diaphragms restrain the stray lights inside the main pipe efficiently, and ensure the parallel error of simulated star light less than 2 arcsec.

Number of references:13

Database:Compendex

Accession number:20073010707245

Title:Measurement of the SNR of Fourier transform spectrometers

Authors:Xiang, Li-Bin (0); Yuan, Yan (0)

Corresponding author:Xiang, L.-B.(xiangli@opt.cn)

Corr. author affiliation:Xi'an Institute of Optics and Precision Mechanics of CAS, Xi'an 710068, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:36

Issue:6

Issue date:June 2007

Publication year:2007

Pages:1110-1114

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, 710068, China

Abstract:A novel method for measuring and calculating the signal to noise ratio of the Fourier transform spectrometer is presented. The relationship between the method proposed and the traditional one is discussed. It is found and proved that the SNR calculated by the proposed method is about 1.5 times higher than the SNR introduced in reference. Different types of noises are introduced and the conclusion that in order to avoid the error of the magnitude of the recovered spectrum the sampling frequency of the interferogram should be higher than the Nyquist frequency is drawn.

Number of references:7

Database:Compendex

Accession number:20073010707250

Title:The new study of quality factor in resolution enhancement method

Authors:Gao, Xiao-Feng (0); Xiang, Li-Bin (0)

Corresponding author:Gao, X.-F.(gaoxf10@126.com)

Corr. author affiliation:Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710068, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:36

Issue:6

Issue date:June 2007

Publication year:2007

Pages:1133-1137

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, 710068, China

Abstract:A new quality factor was derived for evaluating the ability of computed AR parameters to extrapolate a given signal in resolution enhancement method based on forward linear prediction and backward linear prediction. When Burg Method were used to solve AR parameters, the change of quality factor resulted from model order and the influence to recovered spectrum were compared with the quality factor derived by professor J.K. Kauppinen. It is shown that the quality factor derived in this paper is more excellent.

Number of references:9

Database:Compendex

Accession number:20080111005543

Title:Agglutination of interferometer and precision analysis

Authors:Li, Xia (0); Zhao, Jian-Ke (0); Yuan, Yan (0); Zhang, Jian (0)

Corresponding author:Li, X.(lixia@opt.ac.cn)

Corr. author affiliation: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:36

Issue:11

Issue date:November 2007

Publication year:2007

Pages:2124-2128

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, 710068, China

Abstract:By laser (λ=543.5 nm), collimator (with cross objective) and standard len (f=50.1 mm) with CCD (pixel size: 9 μm), the lateral shearing difference between the two five-corner prisms was determined. With another laser (λ=632.8 nm), the resolving power of the imaging spectro-meter was measured. The method of the agglutination of interferometer was proved effectively by the measurement result. The factors of lateral shearing difference were also analysed. The precision analysis was also given, and the reading error is the main factor which affects the interferometer's agglutination precision.

Number of references:9

Database:Compendex

Accession number:20073610796726

Title:Transverse trapping forces of focused Gaussian beam on ellipsoidal particles

Authors:Yan, Shaohui (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) Graduate School of the Chinese Academy of Sciences, Beijing 100039, China

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

Source title:Journal of the Optical Society of America B: Optical Physics

Abbreviated source title:J Opt Soc Am B

Volume:24

Issue:7

Issue date:July 2007

Publication year:2007

Pages:1596-1602

Language:English

ISSN:07403224

CODEN:JOBPDE

Document type:Journal article (JA)

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

Abstract:A modified T-matrix method is presented to compute the scattered fields of various realistically shaped particles; then the radiation forces on the particles can be calculated via the Maxwell stress tensor integral. Numerical results of transverse trapping efficiencies of a focused Gaussian beam on ellipsoidal and spherical particles with the same volume are compared, which show that the shape and orientation of particles affect the maximal transverse trapping force and the displacement corresponding to the maximum. The effect of the polarization direction of the incident beam on the transverse trapping forces is also revealed. © 2007 Optical Society of America.

Number of references:25

Main heading:Gaussian beams

Controlled terms:Integral equations - Light polarization - Light scattering - Matrix algebra - Radiation

Uncontrolled terms:Incident beam - Maxwell stress tensor integral - Transverse trapping forces

Classification code:711.1 Electromagnetic Waves in Different Media - 741.1 Light/Optics - 921.1 Algebra - 921.2 Calculus

Treatment:Theoretical (THR)

Database:Compendex

Accession number:20074710937292

Title:Mirau phase-shifting interferometer for profile measurement of microlenses array

Authors:Jiao, Guo-Hua (0); Li, Yu-Lin (0); Hu, Bao-Wen (0)

Corresponding author:Jiao, G.-H.(ghjiao@opt.ac.cn)

Corr. author affiliation:Xi'an Institute of Optics and Precision Mechanics, CAS, Xi'an 710119, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:36

Issue:10

Issue date:October 2007

Publication year:2007

Pages:1924-1927

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, 710068, China

Abstract:Based on the Mirau phase-shifting interferometer technology, a interferometer system is developed to measure the profile of microlenses array. The light source of the interferometer system is a He-Ne Laser. The interference image system consists of a Mirau interference objective and other optical elements. A piezoelectric transducer (PZT) is used for the phase shifter. The profile of microlenses array is obtained with interferograms by five-step phase-shifting algorithm. The result shows that the horizontal resolution is 1.1 μm, the vertical measurement range is 5 μm and the vertical testing value is accuracy within 6.33 nm of the Mirau phase-shifting interferometer. In the measuring of the profile of microlenses array, the whole array were divided into many micro parts and ensured the maximum high of each part is less than 5 jLtm. The profiles of each part can be acquired by the Mirau phase-shifting interferometer method with the precise motion unit. The accurate profile of the whole microlenses array was gained by using the data splice and 3D reconstruction technology.

Number of references:13

Database:Compendex

Accession number:20071710574635

Title:Theoretical and Numerical investigations of fused silica modification using ultrafast double-pulses

Authors:Liu, Qing (1); Wang, Jianjun (1); Cheng, Guanghua (2); Chen, Junjun (1); Liu, Feifei (3); Liu, Changqing (4)

Author affiliation:(1) Junior College, Zhejiang Wanli University, Ningbo 315101, 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) Library of Zhejiang Wanli University, Ningbo 315100, China; (4) Collage of Mathematics Computer Science, Ningxia University, Yingchuan 750021, China

Corresponding author:Liu, Q.(liuqing@opt.ac.cn)

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

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:6279 PART 2

Monograph title:27th International Congress on High-Speed Photography and Photonics

Issue date:2007

Publication year:2007

Article number:627947

Language:English

ISSN:0277786X

CODEN:PSISDG

ISBN-10:0819463493

ISBN-13:9780819463494

Document type:Conference article (CA)

Conference name:27th International Congress on High-Speed Photography and Photonics

Conference date:September 17, 2006 - September 22, 2006

Conference location:Xi'an, China

Conference code:69475

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

Abstract:We study the mechanisms of ultrafast free-electron generation in laser-irradiated dielectrics (fused silica). The evolution of the free-electron density in the conduction band of dielectrics irradiated by ultrafast double-pulses laser is calculated. The effects of the avalanche ionization is calculated with the recently introduced multiple rate equation, which keeps track of the energy distribution of the free electrons, while maintaining the conceptual and analytic simplicity of the standard rate equation. Using temporally shaped pulse trains with picosecond separation leads to a significant improvement in the quality of ultrafast laser micro-structuring of dielectrics. The evolution of the free-electron density in fused silica irradiated by tightly focused 100 fs laser double-pulses at a center wavelength of 800 nm are numerically investigated to study the role of nonlinear photo-ionization and avalanche ionization processes in free electron generation. The role of impact ionization as compared to photoionization is analyzed.

Number of references:15

Main heading:Ultrashort pulses

Controlled terms:Carrier concentration - Dielectric materials - Electron irradiation - Free electron lasers - Fused silica - Ionization

Uncontrolled terms:Ablation mechanism - Avalanche ionization - Double pulses lasers - Electron number density

Classification code:931.3 Atomic and Molecular Physics - 812.3 Glass - 802.2 Chemical Reactions - 744.5 Free Electron Lasers - 744.1 Lasers, General - 708.1 Dielectric Materials - 701.1 Electricity: Basic Concepts and Phenomena

Treatment:Theoretical (THR)

DOI:10.1117/12.725370

Database:Compendex

Accession number:20073410777678

Title:Programmable arbitrary electrical waveform generator for temporal pulse shaping of high power laser system

Authors:Wang, Chen (0); Liu, Bai-Yu (0); Li, Dong (0); Bai, Yong-Lin (0); Ouyang, Xian (0); Bai, Xiao-Hong (0); Yang, Wen-Zheng (0); Tian, Jin-Shou (0); Huang, Lei (0); Hou, Xun (0)

Corresponding author:Wang, C.(wawa@opt.ac.cn)

Corr. author affiliation: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:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:36

Issue:7

Issue date:July 2007

Publication year:2007

Pages:1181-1186

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, 710068, China

Abstract:For temporal pulse shaping in the high power laser system, a programmable arbitrary electrical waveform generator (AWG) based on GaAs FET is designed. The system includes several GaAs unitcircuits, multichannel programmable grid preset power supply, and micro stripline. Similar optical pulse can be obtained after electric pulse injected into LiNbO3 waveguide modulator. Computer remote control can be realized through adjusting the grid preset voltage of GaAs FET. Temporal setting accuracy can reach 200 ps. Shaping electric pulse amplitude can be adjustable in the range of zero to 5 V, and pulse width is designed to 3 ns. The AWG has been applied in the high power laser system successfully.

Number of references:11

Database:Compendex

Accession number:20071410529873

Title:An approach to locate multi-license plates in complex vehicle images

Authors:Zhang, Bian-Lian (0); Tang, Hui-Jun (0); Yan, Min-Qi (0)

Corresponding author:Zhang, B.-L.(blzhang@opt.ac.cn)

Corr. author affiliation:Xi'an Institute of Optics and Precision Mechanics, CAS, Xi'an 710068, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:36

Issue:1

Issue date:January 2007

Publication year:2007

Pages:184-187

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, China

Abstract:A new method is presented in this paper for locating license plates in complex background. Edge detection. Component connectivity analysis and slant correction etc manifold methods are adopted to resolve the problem of locating license plate in complex background. The capability of accurately location license plate in complex background of this method is proved by experiments. Result also shows that the method is insensitive to weather, illumination variation, motion and rotation of the license plate, and the rotation corner, character orientation etc information are provided for the after work.

Number of references:11

Database:Compendex

Accession number:20071910594838

Title:Comparison of three method to solve AR parameters of line shape optimized maximum entropy linear prediction

Authors:Gao, Xiao-Feng (0); Xiang-Li, Bin (0)

Corresponding author:Gao, X.-F.(gaoxf10@126.com)

Corr. author affiliation:Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710068, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:36

Issue:3

Issue date:March 2007

Publication year:2007

Pages:481-486

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, China

Abstract:Three methods: modified covariance method (MCOV), recursive maximum likelihood estimator (RMLE) and Burg method are used to solve AR parameters and compared the influence to recovered spectrum from AR order, signal-to-noise ratio. It is shown that MCOV is more excellent than RMLE and Burg in LOMEP.

Number of references:7

Database:Compendex

Accession number:20071110487515

Title:Temperature-insensitive fiber Bragg grating pressure sensing with plane round metal diaphragm

Authors:Wei, Ting (1); Qiao, Xueguang (1); Jia, Zhen'an (2); Fu, Haiwei (2); Wang, Hongliang (2)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710068, China; (2) Shaanxi Key Laboratory of Photoelectric Sensing Logging, Xi'an Shiyou University, Xi'an 710065, China

Corresponding author:Wei, T.(yolandemm@sohu.com)

Source title:Guangxue Xuebao/Acta Optica Sinica

Abbreviated source title:Guangxue Xuebao

Volume:27

Issue:1

Issue date:January 2007

Publication year:2007

Pages:80-84

Language:Chinese

ISSN:02532239

CODEN:GUXUDC

Document type:Journal article (JA)

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

Abstract:A novel temperature-insensitive pressure sensor based on fiber Bragg grating (FBG) broadened bandwidth technique using a plane round metal diaphragm is studied theoretically and experimentally. Considering the strain modulating trait of the diaphragm, the smart box structure is adopted and FBG is affixed radially, with the axis center of FBG aiming at the zero strain zone of the diaphragm. Temperature-independent pressure sensing is measured by bandwidth of FBG due to the bandwidth is sensitive to strain but temperature. This approach shows a pressure resolution of ±0.15 MPa and a pressure sensitivity of 0.34 nm/MPa in the range 0-0.75 MPa, with the spectral resolution of the spectral analyzer of 0.05 nm. The experimental results match the theoretical analysis well.

Number of references:9

Main heading:Pressure sensors

Controlled terms:Bandwidth - Diaphragms - Fiber Bragg gratings - Pressure measurement - Spectral resolution

Uncontrolled terms:Chirped effect - Optical sensing - Plane round metal diaphragm - Temperature insensitive pressure measurement

Classification code:741.1 Light/Optics - 741.3 Optical Devices and Systems - 944.3 Pressure Measuring Instruments - 944.4 Pressure Measurements

Treatment:Experimental (EXP)

Database:Compendex

Accession number:20073110734425

Title:Study on pulsed laser ablation and deposition of ZnO thin films by L-MBE

Authors:He, YongNing (1); Zhang, JingWen (1); Yang, XiaoDong (2); Xu, QingAn (2); Zhu, ChangChun (1); Hou, Xun (1)

Author affiliation:(1) Department of Electronic Science and Technology, School of Electronic and Information Engineering, Xi'an Jiaotong University, Xi'an 710049, China; (2) State Key Laboratory of Transient Optics Technology, Xi'an Institute of Optics and Precision Mechanics, Xi'an 710068, China

Corresponding author:He, Y.(yongning@mail.xjtu.edu.cn)

Source title:Science in China, Series E: Technological Sciences

Abbreviated source title:Sci China Ser E Technol Sci

Volume:50

Issue:3

Issue date:June 2007

Publication year:2007

Pages:290-301

Language:English

ISSN:10069321

E-ISSN:1862281X

CODEN:SCETFO

Document type:Journal article (JA)

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

Abstract:ZnO, as a wide-band gap semiconductor, has recently become a new research focus in the field of ultraviolet optoelectronic semiconductors. Laser molecular beam epitaxy (L-MBE) is quite useful for the unit cell layer-by-layer epitaxial growth of zinc oxide thin films from the sintered ceramic target. The ZnO ceramic target with high purity was ablated by KrF laser pulses in an ultra high vacuum to deposit ZnO thin film during the process of L-MBE. It is found that the deposition rate of ZnO thin film by L-MBE is much lower than that by conventional pulsed laser deposition (PLD). Based on the experimental phenomena in the ZnO thin film growth process and the thermal-controlling mechanism of the nanosecond (ns) pulsed laser ablation of ZnO ceramic target, the suggested effective ablating time during the pulse duration can explain the very low deposition rate of the ZnO film by L-MBE. The unique dynamic mechanism for growing ZnO thin film is analyzed. Both the high energy of the deposition species and the low growth rate of the film are really beneficial for the L-MBE growth of the ZnO thin film with high crystallinity at low temperature. © Science in China Press 2007.

Number of references:17

Main heading:Thin films

Controlled terms:Energy gap - Epitaxial growth - Laser ablation - Molecular beam epitaxy - Optoelectronic devices - Pulsed laser deposition - Semiconductor materials - Zinc oxide

Uncontrolled terms:Dynamic mechanisms - Ultraviolet optoelectronic semiconductors

Classification code:931.3 Atomic and Molecular Physics - 804.2 Inorganic Compounds - 802.3 Chemical Operations - 744.9 Laser Applications - 933.1.2 Crystal Growth - 744.8 Laser Beam Interactions - 714.2 Semiconductor Devices and Integrated Circuits - 712.1 Semiconducting Materials - 641.2 Heat Transfer - 741.3 Optical Devices and Systems

Treatment:Theoretical (THR); Experimental (EXP)

DOI:10.1007/s11431-007-0035-z

Database:Compendex

Accession number:20074310890735

Title:Influence analysis of drift angle on image quality of TDICCD camera

Authors:Fan, Chao (0); Li, Ying-Cai (0); Yi, Hong-Wei (0)

Corresponding author:Fan, C.(anfan2003@gmail.com)

Corr. author affiliation:Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710068, China

Source title:Guangdian Gongcheng/Opto-Electronic Engineering

Abbreviated source title:Guangdian Gongcheng

Volume:34

Issue:9

Issue date:September 2007

Publication year:2007

Pages:70-73+107

Language:Chinese

ISSN:1003501X

CODEN:GUGOEC

Document type:Journal article (JA)

Publisher:Chinese Academy of Sciences, Chengdu, Sichuan, 610209, China

Abstract:To analyze the influence of the drift angle on the image quality of the TDICCD camera, the detail format of the drift angle was given based on the orbit equation. Then, the influence of the image motion due to the drift angle on the image quality for the along and across track was researched respectively. To illustrate this effect quantificationally, the image motion and the regulation interval for MTFdrift > 0.95 were computed amply for the round polar orbit. The results show that the drift angle is the function of the latitude, and the effect of the image motion on the image quality for the across track is more serious than that for the along track, so the drift angle must be compensated.

Number of references:12

Database:Compendex

Accession number:20072310642307

Title:Guiding mode in elliptical core microstructured polymer optical fiber

Authors:Zhang, Yani (1); Ren, Liyong (2); Li, Kang (2); Wang, Hanyi (2); Zhao, Wei (2); Wang, Lili (2); Miao, Runcai (3); Large, Maryanne C.J. (4); van Eijkelenborg, Martijn A. (4)

Author affiliation:(1) Department of Physics, Baoji College of Arts and Science, Baoji 721007, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710068, China; (3) Institute of Physics and Information Technology, Shaanxi Normal University, Xi'an 710062, China; (4) Optical Fibre Technology Centre, University of Sydney, NSW 1430, Australia

Corresponding author:Zhang, Y.

Source title:Chinese Optics Letters

Abbreviated source title:Chin. Opt. Lett.

Volume:5

Issue:4

Issue date:April 2007

Publication year:2007

Pages:194-196

Language:English

ISSN:16717694

Document type:Journal article (JA)

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

Abstract:A kind of microstructured polymer optical fiber with elliptical core has been fabricated by adopting in-situ chemical polymerization technology and the secondary sleeving draw-stretching technique. Microscope photography demonstrates the clear hole-structure retained in the fiber. Though the holes distortion is visible, initial laser experiment indicates that light can be strongly confined in the elliptical core region, and the mode field is split obviously and presents the multi-mode characteristic. Numerical modeling is carried out for the real fiber with the measured parameters, including the external diameter of 150μm, the average holes diameter of 3.3μm, and the average hole spacing of 6.3μm by using full-vector plane wave method. The guided mode fields of the numerical simulation are consistent with the experiment result. This fiber shows the strong multi-mode and weak birefringence in the visible and near-infrared band, and has possibility for achieving the fiber mode convertors, mode selective couplers and so on.

Number of references:16

Main heading:Optical fibers

Controlled terms:Birefringence - Computer simulation - Microstructure - Polymerization - Polymers

Uncontrolled terms:In situ chemical polymerization - Microstructured polymer optical fiber - Numerical simulation

Classification code:723.5 Computer Applications - 741.1 Light/Optics - 801.4 Physical Chemistry - 815.1 Polymeric Materials - 815.2 Polymerization - 951 Materials Science

Treatment:Experimental (EXP)

Database:Compendex

Accession number:20073310766859

Title:The design and implementation of logic control in a transient feeble optical signal detection system

Authors:Liang, Yi-Tao (0); Wen, De-Sheng (0); Wang, Hong (0); Li, Bin (0)

Corresponding author:Liang, Y.-T.(liangyt@opt.ac.cn)

Corr. author affiliation:Xi'an Institute of Optics and Precision Mechanics, Chinese Acad. of Sci., Xi'an 710119, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:36

Issue:SUPPL.

Issue date:June 2007

Publication year:2007

Pages:309-312

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, 710068, China

Abstract:According to the requirements of a transient feeble optical signal detection system, a design approach is presents for control logic of the system. The approach taken FPGA technology as the core and programmed on the module means is used in order that the function of system control is implemented. As a result of the simulation and the test, the waves of them are furnished for some key signals such as ens, ad_clk, oe and hbe. With the analysis and measurement of the guide line e.g., the switch of signal processing channels, the circuit delay, and the power dissipation, there is evidence that the design may be characterized by real-time, high-integration and-reliability, low-dissipation, flexibleness. The approach is applied in some transient feeble optical signal detection system successfully.

Number of references:10

Database:Compendex

Accession number:20072910700533

Title:Research on micro-optical lenses fabrication technology

Authors:Yulin, Li (1); Tonghai, Li (1); Guohua, Jiao (1); Baowen, Hu (1); Junmin, Huo (1); Lili, Wang (1)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, CAS, Xi'an, 710068, China

Corresponding author:Yulin, L.(liyu@opt.ac.cn)

Source title:Optik

Abbreviated source title:Optik

Volume:118

Issue:8

Issue date:August 7, 2007

Publication year:2007

Pages:395-401

Language:English

ISSN:00304026

Document type:Journal article (JA)

Publisher:Urban und Fischer Verlag Jena, P.O. Box 100537, Jena, 07705, Germany

Abstract:We present a detail investigation on the development of a series of gradient index (GRIN) optical glass microlens and polymer microlens and microlens arrays in our laboratory in recent years. The special glass material GRIN lenses have been fabricated mainly by using ion-exchange technology, which are applied to construct micro-optic devices and other applications. On one hand, we demonstrated the light propagation and imaging properties of GRIN lenses and the results analyzed. On the other hand, we have explored a drop-on-demand ink-jet printing method to produce microlens array using nano-scale polymer droplets involved with a uniform ultraviolet light and heat solidifying process. The experimental setup for manufacturing polymer microlens array and the performance of refractive microlens elements are also given in this paper. © 2006 Elsevier GmbH. All rights reserved.

Number of references:10

Main heading:Microlenses

Controlled terms:Gradient index optics - Ion exchange - Light propagation - Microoptics - Refractive index

Uncontrolled terms:Gradient index material - Micro-jet printing - Micro-structure optical devices - Microlens arrays

Classification code:741.1 Light/Optics - 741.3 Optical Devices and Systems - 802.2 Chemical Reactions

Treatment:Theoretical (THR)

DOI:10.1016/j.ijleo.2006.04.013

Database:Compendex

Accession number:20074910959910

Title:Six-wave mixing phase-dispersion by optical heterodyne detection in dressed reverse N-type four-level system

Authors:Gan, Chen-Li (1); Nie, Zhi-Qiang (1); Li, Ling (1); Shen, Lei-Jian (1); Zhang, Yan-Peng (1); Song, Jian-Ping (1); Li, Yuan-Yuan (1); Zhang, Xiang-Chen (1); Lu, Ke-Qing (3)

Author affiliation:(1) Key Laboratory for Physical Electronics and Devices, Ministry of Education, Xi'an Jiaotong University, Xi'an 710049, China; (2) Department of Physics, University of Arkansas, Fayetteville, AR 72701, United States; (3) State Key Laboratory of Transient Optics and Technology, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710068, China

Corresponding author:Zhang, Y.-P.(ypzhang@mail.xjtu.edu.cn)

Source title:Chinese Physics

Abbreviated source title:Chin. Phys.

Volume:16

Issue:11

Issue date:November 1, 2007

Publication year:2007

Pages:3407-3415

Language:English

ISSN:10091963

E-ISSN:17414199

CODEN:CHPHF4

Document type:Journal article (JA)

Publisher:Institute of Physics Publishing, Temple Back, Bristol, BS1 6BE, United Kingdom

Abstract:We have investigated the dressed effects of non-degenerate four-wave mixing (NDFWM) and demonstrated a phase-sensitive method of studying the fifth-order nonlinear susceptibility due to atomic coherence in RN-type four-level system. In the presence of a strong coupling field, NDFWM spectrum exhibits Autler-Townes splitting, accompanied by either suppression or enhancement of the NDFWM signal, which is directly related to the competition between the absorption and dispersion contributions. The heterodyne-detected nonlinear absorption and dispersion of six-wave mixing signal in the RN-type system show that the hybrid radiation-matter detuning damping oscillation is in the THz range and can be controlled and modified through the colour-locked correlation of twin noisy fields. © 2007 Chin. Phys. Soc. and IOP Publishing Ltd.

Number of references:13

Main heading:Dispersion (waves)

Controlled terms:Damping - Light absorption - Nonlinear optics

Uncontrolled terms:Atomic coherence - Damping oscillation - Wave mixing

Classification code:711.1 Electromagnetic Waves in Different Media - 741.1.1 Nonlinear Optics - 931.1 Mechanics

Treatment:Theoretical (THR)

DOI:10.1088/1009-1963/16/11/044

Database:Compendex

Accession number:20080511071693

Title:Study on checking and measuring for sagittal double crystal monochromator

Authors:Zhou, Si-Zhong (1); Deng, Xiao-Guo (1); Yang, Xiao-Xu (1); Qu, Wei-De (1); Shen, Hui-Min (3)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (2) Graduate University, Chinese Academy of Sciences, Beijing 100039, China; (3) 63796 PLA, Xichang 615000, China

Corresponding author:Zhou, S.-Z.

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:36

Issue:12

Issue date:December 2007

Publication year:2007

Pages:2346-2349

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

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

Abstract:The check and measure methods of Bragg angle step and precision etc. parameters with high precision autocollimation are investigated. Adjustment angles of crystal have been magnified using parallel ray of monochromator, to checking and measuring performance of adjustment mechanism. Simulated ray of the beamline has been built to check and measure sagittal focusing facula. Performance checking and measuring of the first sagittal focusing monochromator in internal had been successfully achieved out of beamline, checking and measuring results in according with theory design index, indicating validity of those methods.

Number of references:6

Main heading:Measurements

Controlled terms:Architectural design - Light sources - Monochromators - Multitasking - Powders

Uncontrolled terms:(e ,2e) theory - Autocollimation - beam lines - Bragg angles - Design index - Double crystal monochromator (DCM) - high precision - Measuring performances - monochromator

Classification code:402 Buildings and Towers - 536 Powder Metallurgy - 707.2 Electric Lamps - 722.4 Digital Computers and Systems - 741.3 Optical Devices and Systems - 941 Acoustical and Optical Measuring Instruments

Database:Compendex

Accession number:20071710574559

Title:A CMOS current-to-voltage linear conversion for low input current, low noise and low power

Authors:Hu, Bingliang (1); Yang, Simon X. (2)

Author affiliation:(1) Xi'an Institute of Optics and Precision Machanics, Chinese Academy of Sciences, Xi'an, Shaanxi, 710068, China; (2) School of Engineering, University of Guelph, Guelph, Ont. N1G 2W1, Canada

Corresponding author:Hu, B.(hbl@opt.ac.cn)

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

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:6279 PART 1

Monograph title:27th International Congress on High-Speed Photography and Photonics

Issue date:2007

Publication year:2007

Article number:62791W

Language:English

ISSN:0277786X

CODEN:PSISDG

ISBN-10:0819463493

ISBN-13:9780819463494

Document type:Conference article (CA)

Conference name:27th International Congress on High-Speed Photography and Photonics

Conference date:September 17, 2006 - September 22, 2006

Conference location:Xi'an, China

Conference code:69475

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

Abstract:This paper presents a very simple circuit of balanced two-stage current amplifier and regulated cascode (RGC) amplifier to realize a linear current-to-voltage conversion. It can accept very low currents in the nA range. The noise model and strategies for noise reduction are discussed. The circuit is designed for 0.18μm CMOS technology and verified by simulations.

Number of references:10

Main heading:CMOS integrated circuits

Controlled terms:Amplifiers (electronic) - Current voltage characteristics - Electric converters - Spectrometers - Spurious signal noise

Uncontrolled terms:Balanced two stage current amplifiers - Current to voltage conversion - Micro spectrometers - Regulated cascode (RGC) amplifiers

Classification code:701.1 Electricity: Basic Concepts and Phenomena - 704.2 Electric Equipment - 713.1 Amplifiers - 714.2 Semiconductor Devices and Integrated Circuits - 741.3 Optical Devices and Systems

Treatment:Theoretical (THR)

DOI:10.1117/12.725234

Database:Compendex

Accession number:20074310888811

Title:Dynamic balance calculation of the pull-down mechanisms of 70 mm HSPC

Authors:Ma, Li-Hua (0); Liang, Zhi-Yi (0); Qiao, Wei-Dong (0); Shi, Xing-Chun (0); Lu, Mei (0)

Corresponding author:Ma, L.-H.(hua_marry@sohu.com)

Corr. author affiliation:Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710068, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:36

Issue:9

Issue date:September 2007

Publication year:2007

Pages:1710-1713

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, 710068, China

Abstract:The 70 mm high speed photographic camera (HSPC) and its film-transport mechanism were introduced. The method for calculate the dynamics balance of crank-rocker film pull-down mechanisms was described. The result was analyzed too. Result of dynamics simulation provided credible data is used for engineering design. The optimal dynamic balance is able to improve photo frequency. This way is more simple, exact and practical.

Number of references:5

Database:Compendex

Accession number:20080511071700

Title:Study of wavelet domain Gaussian mixture model with median filtering mixed image denoising

Authors:Hu, Xiao-Dong (1); Peng, Xin (1); Yao, Lan (1)

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

Corresponding author:Hu, X.-D.

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:36

Issue:12

Issue date:December 2007

Publication year:2007

Pages:2381-2385

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

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

Abstract:Based on the Gaussian mixture model wavelet denoising method and combining with characteristics that median filtering has better effect on impulse noise denosing, the two methods are applyed to the image denoising which contains Gaussian pulse mixed noise. Matlab is used for algorithm simulation and the experimental results show that this approach to the denoising effect is better than simply using median filter or effect of the wavelet denoising.

Number of references:9

Main heading:Mathematical models

Controlled terms:Communication channels (information theory) - Filtration - Gaussian distribution - Image processing - Image segmentation - MATLAB - Mixtures - Object recognition - Photoacoustic effect - Statistics - Trellis codes

Uncontrolled terms:Algorithm simulations - De-noising - Experimental results - Gaussian mixture model (GMM) - Gaussian pulses - Image de-noising - median filtering - Mixed noise - Wavelet de-noising - Wavelet denoising method - wavelet domains

Classification code:922.1 Probability Theory - 921 Mathematics - 802.3 Chemical Operations - 741.1 Light/Optics - 922.2 Mathematical Statistics - 741 Light, Optics and Optical Devices - 723.2 Data Processing and Image Processing - 716.1 Information Theory and Signal Processing - 716 Telecommunication; Radar, Radio and Television - 723.5 Computer Applications

Database:Compendex

Accession number:20074310888812

Title:Influence analysis of buffeting on image quality of TDICCD camera

Authors:Fan, Chao (0); Li, Ying-Cai (0); Yi, Hong-Wei (0)

Corresponding author:Fan, C.(anfan2003@gmail.com)

Corr. author affiliation:Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710068, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:36

Issue:9

Issue date:September 2007

Publication year:2007

Pages:1714-1717

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, 710068, China

Abstract:In order to analyze the influence of the satellite buffeting on the image quality of the TDICCD camera, the image motion introduced by the low frequency sine buffeting was given. The influence of the image motion along the roll, pitch, yaw direction on the image quality was studied chiefly. Finally, the degradation of the image quality caused by the buffeting was computed concretely according to the datum come from two kinds of the emulation on the satellite kinetic buffeting. The results show that, with the increase of TDICCD integration number, the requirement of TDICCD camera for buffeting amplitude is more stringent, and must be limited.

Number of references:9

Database:Compendex

Accession number:20073110720153

Title:Color center conversion by femtosecond pulse laser irradiation in LiF:F<inf>2</inf> crystals

Authors:Cheng, Guanghua (1); Wang, Yishan (1); He, Junfang (1); Chen, Guofu (1); Zhao, Wei (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710068, China

Corresponding author:Cheng, G.(gcheng@opt.ac.cn)

Source title:Optics Express

Abbreviated source title:Opt. Express

Volume:15

Issue:14

Issue date:July 9, 2007

Publication year:2007

Pages:8938-8942

Language:English

E-ISSN:10944087

Document type:Journal article (JA)

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

Abstract:We report the observation of intense spontaneous emission of green light from LiF:F<inf>2</inf>:F<inf>3</inf>+ centers in active channel waveguides generated in lithium fluoride crystals by near-infrared femtosecond laser radiation. While irradiating the crystal at room temperature with 405 nm light from a laser diode, yellow and green emission was seen by the naked eye. Stripe waveguides were fabricated by translating the crystal along the irradiated laser pulse, and their guiding properties and fluorescence spectra at 540 nm demonstrated. This single-step process inducing a waveguide structure offers a good prospect for the development of a waveguide laser in bulk LiF crystals. ©2007 Optical Society of America.

Number of references:20

Main heading:Laser beam effects

Controlled terms:Crystal structure - Fluorescence - Semiconductor lasers - Ultrashort pulses

Uncontrolled terms:Lithium fluoride - Waveguide structure

Classification code:741.1 Light/Optics - 744.1 Lasers, General - 744.4.1 Semiconductor Lasers - 744.8 Laser Beam Interactions - 933.1.1 Crystal Lattice

Treatment:Theoretical (THR)

DOI:10.1364/OE.15.008938

Database:Compendex

Accession number:20071710574499

Title:Historical development and application of ultra fast diagnosis based on image tube in XIOPM

Authors:Zhao, Wei (1); Hou, Xun (1); Tian, Jin-Shou (1)

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

Corresponding author:Zhao, W.

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

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:6279 PART 1

Monograph title:27th International Congress on High-Speed Photography and Photonics

Issue date:2007

Publication year:2007

Article number:627904

Language:English

ISSN:0277786X

CODEN:PSISDG

ISBN-10:0819463493

ISBN-13:9780819463494

Document type:Conference article (CA)

Conference name:27th International Congress on High-Speed Photography and Photonics

Conference date:September 17, 2006 - September 22, 2006

Conference location:Xi'an, China

Conference code:69475

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

Abstract:Xi'an Institute of Optics and Precision Mechanics of CAS was founded in 1962, but the research activities on high-speed diagnosis in China can be dated back to 1958. The main goal of the Institute is developing some optical and opto-electrical diagnostic tools of transient phenomena. This paper describes the historical development and application of ultra fast diagnosis based on image tube in XIOPM.

Number of references:25

Main heading:Ultrafast phenomena

Controlled terms:Electron diffraction - Optoelectronic devices - Streak cameras

Uncontrolled terms:Frame camera - Inertial confined fusion - Optoelectrical diagnostic tools

Classification code:741.1.1 Nonlinear Optics - 741.3 Optical Devices and Systems - 742.2 Photographic Equipment - 931.3 Atomic and Molecular Physics

Treatment:Theoretical (THR)

DOI:10.1117/12.725054

Database:Compendex

Accession number:20074310888788

Title:Study on sensitization effect in Eu3+/Sm3+ Co-doped PMMA

Authors:Sun, Ting (0); Wang, Yao-Xiang (0); Huang, Chang-Qing (0); Tian, Wei-Jian (0); Ge, Wen-Ping (0); Zhang, Xing-Long (0); Huang, Kun (0); Yu, Hui-Xia (0)

Corresponding author:Sun, T.(sunting@opt.ac.cn)

Corr. author affiliation:Laboratory of Information and Photonics, Xi'an Institute of Optics and Precision Mechanics, Xi'an 710068, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:36

Issue:9

Issue date:September 2007

Publication year:2007

Pages:1614-1617

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, 710068, China

Abstract:The sensitization effect of Sm3+ to Eu3+ in Eu3+/Sm3+ co-doped PMMA with different doping concentrations was studied. These samples were fabricated using modified noumenon polymeric method. Fluorescence spectrometer was utilized to characterize the fluorescence properties of the Eu3+/Sm3+ co-doped PMMA. It is found that by doping Sm(TTFA)O3 in Eu(TTFA)O3-doped materials the fluorescence intensity of Eu3+ ions can be significantly improved. It indicates that Sm (TTFA)O3 has a strong sensitization effect to the fluorescence of Eu(TTFA)O3. To our knowledge, this paper is the first detailed report on this sensitization process. Two possible sensitization mechanisms were put forward. The luminescence lifetimes are almost invariable while the doping concentrations are changed. Such fluorescent PMMA might have extensive prospect of applications in optical devices, such as polymer optical fibers, polymer optical fiber laser, amplifier, waveguides and so on.

Number of references:11

Database:Compendex

Accession number:20072010603168

Title:RST invariant watermark based on local Zernike moments

Authors:Li, Lei-Da (1); Guo, Bao-Long (1); Sun, Lei (2)

Author affiliation:(1) ICIE Institute, School of Electromechanical Engineering, Xidian University, Xi'an 710071, China; (2) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710068, China

Corresponding author:Li, L.-D.(reader1104@163.com)

Source title:Guangdianzi Jiguang/Journal of Optoelectronics Laser

Abbreviated source title:Guangdianzi Jiguang

Volume:18

Issue:1

Issue date:January 2007

Publication year:2007

Pages:117-120

Language:Chinese

ISSN:10050086

CODEN:GUJIE9

Document type:Journal article (JA)

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

Abstract:Rotation, scaling and translation (RST) attacks can desynchronize the watermark detection so that many watermark systems fail. In this paper, a RST invariant watermark is proposed by using local Zernike moments. As the Zernike magnitude moments of a normalized image are RST invariant, the watermark image is embedded into the local area of the original image after reconstruction. And the Zernike magnitudes of the area are extracted as the eventual watermark vector. In detection, the Zernike vector of the selected area is first extracted, and the root-mean-square-error (RMSE) is employed to decide the presence of the watermark. The local Zemike moments makes the watermark more robust to rotation attacks than the global moments. The watermark is also robust to scaling as well as regular attacks such as JPEG compression and added noises.

Number of references:9

Main heading:Image processing

Controlled terms:Rotation - Watermarking

Uncontrolled terms:Image normalization - Image watermarking - Moment invariants - Root mean square error (RMSE) - Zernike moments

Classification code:723.2 Data Processing and Image Processing - 741 Light, Optics and Optical Devices

Treatment:Experimental (EXP)

Database:Compendex

Accession number:20080511071698

Title:Research of stimulated wakes' bubble film based on image processing

Authors:Zhang, Jian-Sheng (1); Lin, Shu-Yu (1); Miao, Run-Cai (1); Liu, Peng (1); Yang, Wan-Min (1); He, Jun-Hua (3)

Author affiliation:(1) Physics Department, Shaanxi Normal University, Xi'an 710062, China; (2) Math-Physical Department, Xi'an Technological University, Xi'an 710032, China; (3) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710068, China

Corresponding author:Zhang, J.-S.(zhangjsh@mail.xait.edu.cn)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:36

Issue:12

Issue date:December 2007

Publication year:2007

Pages:2371-2376

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

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

Abstract:Qualitative and quantitative analysis of stimulated wakes bubble film (SWBF) is carried out based on image processing technology. Scales and the density distribution (SDD) of bubbles are observed clearly under minor pressures as the overlap of bubbles layered is fine, vice versa. Pseudo color displays of bubble film gray images are got based on area separating technology, also information such as SDD is analyzed qualitatively. Arrangement of ED, residual and differential proportion of bubble films based on shape analysis show that ED of bubbles with different pressures ranges from 5 to 100 pixel, the average ED is about 55 pixel, and mall bubbles possess a great proportion with minor pressure.

Number of references:10

Main heading:Quality control

Controlled terms:Computer graphics - Computer networks - Digital image storage - Gases - Image processing - Imaging systems - Imaging techniques - Industrial research - Information technology - Metal detectors - Optical data processing - Pixels - Pressure - Technology - Wakes

Uncontrolled terms:(OTDR) technology - Density distributions - gray images - Image processing technology - Pseudo colors - Quantitative analysis - Shape analysis

Classification code:943.3 Special Purpose Instruments - 746 Imaging Techniques - 901 Engineering Profession - 901.3 Engineering Research - 913.3 Quality Assurance and Control - 931.1 Mechanics - 931.2 Physical Properties of Gases, Liquids and Solids - 741 Light, Optics and Optical Devices - 723.2 Data Processing and Image Processing - 722.2 Computer Peripheral Equipment - 722.1 Data Storage, Equipment and Techniques - 716 Telecommunication; Radar, Radio and Television - 631.1 Fluid Flow, General - 723.5 Computer Applications

Database:Compendex

Accession number:20074310888808

Title:On the tolerance of fixed optical path difference and step in Michelson interferometer

Authors:Wang, Li (0); Zhao, Bao-Chang (0); Xiang-Li, Bin (0); Zhang, Chun-Min (0); Qin, Ai-Li (0)

Corresponding author:Wang, L.(wlfuyun@opt.ac.cn)

Corr. author affiliation:Xi'an Institute of Optics and Precision Mechanics, CAS, Xi'an 710119, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:36

Issue:9

Issue date:September 2007

Publication year:2007

Pages:1697-1700

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, 710068, China

Abstract:On fixed optical path difference, interference intensity of four steps in an interval of quarter of wavelength is achieved by moving mirror step or coating on four quadrants for Michelson wind imaging interferometer. In this course, the error of fixed optical path difference and step will affect the result. The tolerance is discussed in the range of allowance precision. If the error has been known, accurate result can be achieved.

Number of references:6

Database:Compendex

Accession number:20071910594847

Title:Optical system design of space three-dimensional photographic

Authors:Chang, Ling-Ying (0); Zhao, Bao-Chang (0); Yang, Jian-Feng (0); Chen, Li-Wu (0)

Corresponding author:Chang, L.-Y.(lychang@opt.ac.cn)

Corr. author affiliation:Xi'an Institute Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710068, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:36

Issue:3

Issue date:March 2007

Publication year:2007

Pages:539-542

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, China

Abstract:A wide field of view telecentric optical system that is used to obtain space three-dimension photogrammetry was introduced. The structure of optical system is complicated double Gauss telecentric lens. The capital optical parameters are f' =23.3 mm, 2ω = 37.8°, F/number = F/5 and spectrum range 0. 5~0. 75 μm. Imaging resolution was over 36 lp/mm when MTF reached 0.8. Simulant experiment and synthetical three-dimension photogrammetry show that this optical system can suffice require of space three-dimension photogrammetry.

Number of references:10

Database:Compendex

Accession number:20074310888802

Title:Experimental study on interference spectral image series compression

Authors:Du, Shu-Song (0); Yuan, Yan (0); Xiang-Li, Bin (0); Tao, Ran (0); Zhang, Wen-Xi (0)

Corresponding author:Du, S.-S.(shusongdu@163.com)

Corr. author affiliation:Xi'an Institute of Optics and Precision Mechanics, CAS, Xi'an 710119, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:36

Issue:9

Issue date:September 2007

Publication year:2007

Pages:1672-1676

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, 710068, China

Abstract:Based on the uniform quantization and the AR model compression algorithm, simulated experiment is carried out for compressing the interferometric hyperspectral image series which were directly produced by the interferometric hyper spectro-imager. In AR model the Lloyd-Max quantizer is use to quantize the predicted residuals. The output of the quantizer is encoded by the Huffman encoder. The compression quality is analyzed. The uniform quantization and the AR model compression algorithm can satisfied the requirement of the compression for the interferometric hyperspectral image series.

Number of references:7

Database:Compendex

Accession number:20072110612230

Title:Preparation and luminescence properties of Eu2+ in SiO<inf>2</inf> xerogels

Authors:Hu, Xiaoyun (1); Fan, Jun (2); Li, Ting (1); Zhang, Dekai (1); Chen, Weizong (1); Bai, Jintao (3); Hou, Xun (3)

Author affiliation:(1) Department of Physics, Northwest University, Xi'an, 710069, China; (2) Chemical Engineering College, Northwest University, Xi'an, 710069, China; (3) Institute of Photonics and Photon-Technology, Provincial key Laboratory of Photo electronic Technology, Northwest University, Xi'an, 710069, China; (4) State key Laboratory of Transient Optics and Technology, Xi'an institute of Optics and Precision Mechanics, The Academy of Sciences of China, Xi'an, 710068, China

Corresponding author:Hu, X.(hxy3275@nwu.edu.cn)

Source title:Optical Materials

Abbreviated source title:Opt Mater

Volume:29

Issue:11

Issue date:July 2007

Publication year:2007

Pages:1327-1331

Language:English

ISSN:09253467

CODEN:OMATET

Document type:Journal article (JA)

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

Abstract:Al-doped and B, Al co-doped SiO<inf>2</inf> xerogels with Eu2+ ions were prepared only by sol-gel reaction in air without reducing heat-treatment or post-doping. The luminescence characteristics and mechanism of europium doping SiO<inf>2</inf> xerogels were studied as a function of the concentration of Al, B, the europium concentration and the host composition. The emission spectra of the Al-doped and B, Al co-doped samples all show an efficient emission broad band in the blue violet range. The blue emission of the Al-doped sample was centered at 437 nm, whereas the B, Al co-doped xerogel emission maximum shifted to 423 nm and the intensity became weaker. Concentration quenching effect occurred in both the Al-doped and B, Al co-doped samples, which probably is the result of the transfer of the excitation energy from Eu2+ ions to defects. The highest Eu2+ emission intensity was observed for samples with the Si(OC<inf>2</inf>H<inf>5</inf>)<inf>4</inf>:C<inf>2</inf>H<inf>5</inf>OH:H<inf>2</inf>O molar ratio of 1:2:4. © 2006 Elsevier B.V. All rights reserved.

Number of references:14

Main heading:Europium

Controlled terms:Aluminum - Doping (additives) - Emission spectroscopy - Phosphors - Photoluminescence - Silica - Sol-gel process - Xerogels

Uncontrolled terms:Blue emission - Emission intensity - Host composition - Molar ratio

Classification code:812.3 Glass - 804 Chemical Products Generally - 741.1 Light/Optics - 712.1 Semiconducting Materials - 547.2 Rare Earth Metals - 541.1 Aluminum - 482.2 Minerals

Treatment:Experimental (EXP)

DOI:10.1016/j.optmat.2006.06.008

Database:Compendex

Accession number:20071510546857

Title:Numerically simulating the static property for rotating mirror of ultra-high speed camera

Authors:Huang, Hong-Bin (1); Li, Jing-Zhen (1); Sun, Feng-Shan (2); Gong, Xiang-Dong (1); Ai, Yue-Xia (1)

Author affiliation:(1) College of Science and Technology, Shenzhen University, Shenzhen 518060, China; (2) Xi'an Institute of Optics and Precision Mechanics, Academia Sinica, Xi'an 710068, China

Corresponding author:Huang, H.-B.(huanghb@szu.edu.cn)

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

Abbreviated source title:Shenzhen Daxue Xuebao (Ligong Ban)

Volume:24

Issue:1

Issue date:January 2007

Publication year:2007

Pages:75-78

Language:Chinese

ISSN:10002618

Document type:Journal article (JA)

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

Abstract:The principles and methods of computer simulation for the deformation of mirror surface and the stress distribution of mirror were established by the use of the tri-axial elastic mechanics and finite element method of structural strength analysis, and the experimental results were obtained. Depending on the theories and techniques, the stress distribution and the place of maximum stress, and the deformation of mirror surface for tetrahedroid mirror were worked out. The computing values were compared with the expeimental results.

Number of references:6

Main heading:Mirrors

Controlled terms:Computer simulation - Deformation - Finite element method - High speed cameras - Mathematical models - Mechanics - Stress concentration

Uncontrolled terms:Rotating mirror - Stress distribution

Classification code:421 Strength of Building Materials; Mechanical Properties - 723.5 Computer Applications - 741.3 Optical Devices and Systems - 921 Mathematics

Treatment:Theoretical (THR)

Database:Compendex

Accession number:20072910700522

Title:Modeling and optimizing of high-concentration erbium-doped fiber amplifiers with consideration of ion-clusters

Authors:Li, Jianfeng (1); Duan, Kailiang (2); Wang, Yishan (2); Zhao, Wei (2); Guo, Yongkang (1); Lin, Xiangdi (1)

Author affiliation:(1) Institute of Nano Optics, Department of Physics, Sichuan University, Chengdu, 610064, China; (2) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, 710119, China

Corresponding author:Duan, K.(kl.duan@tom.com)

Source title:Optics Communications

Abbreviated source title:Opt Commun

Volume:277

Issue:1

Issue date:September 1, 2007

Publication year:2007

Pages:143-149

Language:English

ISSN:00304018

CODEN:OPCOB8

Document type:Journal article (JA)

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

Abstract:Starting from the modeling of isolated ions and ion-clusters, a closed form rate and power evolution equations for high-concentration erbium-doped fiber amplifiers are constructed. Based on the equations, the effects of the fraction of ion-clusters in total ions and the number of ions per cluster on the performance of high-concentration erbium-doped fiber amplifiers are analyzed numerically. The results show that the presence of the ion-clusters deteriorates amplifier performance, such as the signal power, signal gain, the threshold pump power for zero gain, saturated signal gain, and the maximum gain efficiency, etc. The optimum fiber length or other parameters should be modified with the ion-clusters being taken into account for the amplifiers to achieve a better performance. © 2007 Elsevier B.V. All rights reserved.

Number of references:21

Main heading:Fiber amplifiers

Controlled terms:Concentration (process) - Doping (additives) - Erbium - Numerical methods - Optimization

Uncontrolled terms:Gain efficiency - Homogeneous upconversion - Pair induced quenching - Propagation rate equations

Classification code:547.2 Rare Earth Metals - 744.4 Solid State Lasers - 801 Chemistry - 802.3 Chemical Operations - 921.5 Optimization Techniques - 921.6 Numerical Methods

Treatment:Theoretical (THR)

DOI:10.1016/j.optcom.2007.04.060

Database:Compendex

Accession number:20074210870669

Title:A novel ultra-narrow transmission-band fiber Bragg grating and its application in a single-longitudinal-mode fiber laser with improved efficiency

Authors:Liu, Xueming (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, 710068, China

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

Source title:Optics Communications

Abbreviated source title:Opt Commun

Volume:280

Issue:1

Issue date:December 1, 2007

Publication year:2007

Pages:147-152

Language:English

ISSN:00304018

CODEN:OPCOB8

Document type:Journal article (JA)

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

Abstract:A novel design approach to ultra-narrow transmission-band fiber Bragg grating (FBG) is proposed and demonstrated for the first time. The new grating consists of multiple identical distributed-Bragg reflector (DBR) cavities and a π-phase-shifted gap, and hence, the proposed laser is constructed by the cascade of these identical DBR fiber lasers. By manufacturing the proposed grating in a piece of Er-Yb codoped fiber, a single-wavelength single-longitudinal-mode (SLM) fiber laser with improved efficiency is demonstrated experimentally. The experimental results show that the pump-to-signal conversion efficiency of the proposed laser is improved by a factor of two in comparison with the optimized distributed-feedback (DFB) fiber lasers. © 2007 Elsevier B.V. All rights reserved.

Number of references:12

Main heading:Fiber Bragg gratings

Controlled terms:Distributed Bragg reflectors - Distributed feedback lasers - Fiber lasers - Optical design - Optimization - Wavelength

Uncontrolled terms:Phase shifted gap - Single-longitudinal-mode (SLM) - Ultra-narrow transmission-band

Classification code:711 Electromagnetic Waves - 741.1 Light/Optics - 741.3 Optical Devices and Systems - 744.1 Lasers, General - 744.4 Solid State Lasers - 921.5 Optimization Techniques

Treatment:Theoretical (THR); Experimental (EXP)

DOI:10.1016/j.optcom.2007.07.057

Database:Compendex

Accession number:20073310766852

Title:Generator and lower computer of space array CCD camera based on FPGA

Authors:Ran, Xiao-Qiang (0); Wen, De-Sheng (0); Qiu, Yue-Hong (0); Wang, Hua (0)

Corresponding author:Ran, X.-Q.(xqran@126.com)

Corr. author affiliation:Xi'an Institute of Optics and Precision Mechanics, Chinese Acad. of Sci., Xi'an 710119, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:36

Issue:SUPPL.

Issue date:June 2007

Publication year:2007

Pages:278-281

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, 710068, China

Abstract:Based on the examination of driving schedules of CCD47-20 Backthinned NIMO produced by e2v, the incorporate design of driving schedule generator and lower computer have been finished, for electronical system of CCD camera on request. FPGA is chosen as the hardware design platform; and the incorporate Driving schedules and controlled system is described with VHDL. The RTL simulation is fulfilled and design is fitted into EP2C5T144C8 (a kind of FPGA products that made e2v). The hardware of incorporate system is also finished. Hardware experiments show that the finished incorporate Driving schedules and controlled system can fulfills the request for Driving schedules for the CCD and vedio processing, and make the communication with upper computer dependably, therefore the state of CCD camera can be inspected and controlled.

Number of references:7

Database:Compendex

Accession number:20071310511550

Title:Photochromic diarylethene for reversible holographic recording

Authors:Xie, Nan (1); Chen, Yi (1); Yao, Baoli (2); Lie, Ming (2)

Author affiliation:(1) Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100101, China; (2) State Key Laboratory of Transient Optics Technology, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, 710068, China

Corresponding author:Chen, Y.(yichencas@yahoo.com.cn)

Source title:Materials Science and Engineering B: Solid-State Materials for Advanced Technology

Abbreviated source title:Mater Sci Eng B Solid State Adv Technol

Volume:138

Issue:3

Issue date:April 15, 2007

Publication year:2007

Pages:210-213

Language:English

ISSN:09215107

CODEN:MSBTEK

Document type:Journal article (JA)

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

Abstract:A novel photochromic diarylethene with 2,5-dihydrothiophene bridging unit 1a was synthesized, and the photochromic properties of 1 were also investigated. It showed that 1 exhibited excellent ring-open and ring-closed photochromism with UV/vis light irradiation. Holographic recording was measured by employing the thin film of PMMA-diarylethene 1 as recording media. It showed that six different images were recorded in the same place on the sample with the dimension of 64 μm × 42 μm by the intersecting of the object beam and a reference beam with an intensity of 15 mW/cm2, and the stored information was readout by the attenuated reference beam with an intensity of 0.5 mW/cm2. In addition, preliminary investigations showed that the material was thermally stable and fatigue resistant. © 2007 Elsevier B.V. All rights reserved.

Number of references:26

Main heading:Olefins

Controlled terms:Holographic optical elements - Image analysis - Optical recording - Photochromism - Ultraviolet radiation

Uncontrolled terms:Attenuated reference beams - Diarylethenes - Holographic recording

Classification code:741.1 Light/Optics - 741.3 Optical Devices and Systems - 743.1.1 Optical Holography - 804.1 Organic Compounds

Treatment:Experimental (EXP)

DOI:10.1016/j.mseb.2007.01.013

Database:Compendex

Accession number:20104313316449

Title:Influence of the thickness of super lattice interlayer on the dislocation density of HT-GaN on Si( 111)

Authors:Liu, Xiaofeng (1); Feng, Yuchun (1); Peng, Dongsheng (2)

Author affiliation:(1) Institute of Optoelectronics, Shenzhen University, Shenzhen 518060, China; (2) Xi'an Institute of Optics and Precision Mechanics Chinese Academy of Sciences, Xi'an 710068, China

Corresponding author:Liu, X.(fych@szu.edu.cn)

Source title:AD'07 - Proceedings of Asia Display 2007

Abbreviated source title:AD - Proc. Asia Disp.

Volume:2

Monograph title:AD'07 - Proceedings of Asia Display 2007

Issue date:2007

Publication year:2007

Pages:1752-1756

Language:English

ISBN-13:9787561752289

Document type:Conference article (CA)

Conference name:Asia Display 2007, AD'07

Conference date:March 12, 2007 - March 16, 2007

Conference location:Shanghai, China

Conference code:81864

Sponsor:The Society for Information Display

Publisher:East China Normal University Press, 3663 Zhongshan Road (N), Shanghai, People's Republic of China, 200062, China

Abstract:To decrease the dislocation density of HT-GaN onSi(lll) with meralorganic chemical vapor deposition (MOC VD), super lattice interlayer is introduced. The super lattice with mutative interface can effectively prevent the dislocation originating from the buffer layer from penetrating to the surface of GaN film. The influence of the thickness of super lattice interlayer on the dislocation density of HT-GaN on Si (111) is investigated in this article. Three samples with different thickness of super lattice layer are studied. The high-resolution double crystal X-ray diffraction (DCXRD) is used to analyze the crystal quality. Furthermore, the three samples are etched by H<inf>3</inf>PO <inf>4</inf> + H<inf>2</inf>SO<inf>4</inf> mixed resolution and melted KOH respectively and then observed by scanning electron microscopy (SEM). The later experiment shown that the dislocation density of anyone of the three samples etched by H<inf>3</inf>PO<inf>4</inf> + H<inf>2</inf>SO<inf>4</inf> mixed resolution apparently higher than that etched by melted KOH, which further justify the reported conclusion that H<inf>3</inf>PO<inf>4</inf> +H <inf>2</inf>SO<inf>4</inf> mixed resolution etch screw dislocation and mixture dislocation while melted KOH etch screw dislocation. Both experiments shows that modest thickness of super lattice interlayer effectively decline the dislocation density of HT-GaN on Si( 111).

Number of references:15

Main heading:Screw dislocations

Controlled terms:Chemical vapor deposition - Gallium alloys - Gallium nitride - Potassium hydroxide - Scanning electron microscopy - Screws - Silicon - X ray diffraction - X ray diffraction analysis

Uncontrolled terms:Crystal qualities - Different thickness - Dislocation densities - Double crystal x ray diffraction - GaN - GaN film - High resolution - SEM - Si (1 1 1)

Classification code:933.1.1 Crystal Lattice - 804.2 Inorganic Compounds - 803 Chemical Agents and Basic Industrial Chemicals - 802.2 Chemical Reactions - 741.1 Light/Optics - 605 Small Tools and Hardware - 549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals

Database:Compendex

Accession number:20073310766861

Title:Design research of high-speed infrared image interpretation system

Authors:Fu, Tong-Tang (0); Su, Xiu-Qin (0); Liu, Ying (0); Hao, Wei (0); Li, Zhe (0)

Corresponding author:Fu, T.-T.(zealotds@163.com)

Corr. author affiliation:Xi'an Institute of Optics and Precision Mechanics, Chinese Acad. of Sci., Xi'an 710119, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:36

Issue:SUPPL.

Issue date:June 2007

Publication year:2007

Pages:318-321

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, 710068, China

Abstract:Aiming at the problem of huge data amount and slow processing speed in the afterwards interpretation field, a new high-speed image interpretation system is proposed. This system is based on the multithread Ping-Pong buffer technique and implements the parallel execution of image loading, image display and image interpretation. Interpretation precision is improved by manifold gray-mapping preprocessing and sub-pixel techniques. Designing experiments indicate that the system is efficiently improved and effectively solved the problem of long-time data processing progress in high-speed image storage system.

Number of references:11

Database:Compendex

Accession number:20071910594825

Title:The characteristics of GaAs and InP photoconductive semiconductor switch

Authors:Ruan, Chi (0); Zhao, Wei (0); Chen, Guo-Fu (0); Zhu, Shao-Lan (0); Yang, Hong-Chun (0); Ruan, Cheng-Li (0)

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

Corr. author affiliation: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:36

Issue:3

Issue date:March 2007

Publication year:2007

Pages:405-411

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, China

Abstract:III-V compound semiconductors, such as gallium arsenide (GaAs), indium phosphide (InP) and their doped materials, are suitable to make high speed and high power PCSS with picosecond (ps) time response. Experiments are setup to compare the characteristics of the two materials, such as the time response speed,the trigger laser energy threshold of open and saturated state, the nonlinear operation mode and the output stability. The experimental results show that both two kinds of PCSS can achieve ps time response and ps time triggering jitter, and their voltage RMS jitters would be less than 10%. Compared with InP PCSS, the threshold of nonlinear mode bias field is low to GaAs PCSS, so it would work in this mode easily.

Number of references:11

Database:Compendex

Accession number:20080911120083

Title:Optoelectronic properties and holographic optical recording of a dithienylperfluorocyclopentene compound having two phenanthryl units

Authors:Yang, T.S. (1); Pu, S.Z. (1); Liu, G. (1); Yao, B.L. (2); Wang, Y.L. (2); Lei, M. (2)

Author affiliation:(1) Jiangxi Key Lab. of Organic Chemistry, Jiangxi Science and Technology, Normal University, Nanchang 330013, China; (2) State Key Laboratory of Transient Optics Technology, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Science, Xi'an 710068, China

Corresponding author:Yang, T.S.

Source title:Physica Scripta T

Abbreviated source title:Phys Scr T

Volume:T129

Monograph title:2nd International Symposium on Functional Materials

Issue date:2007

Publication year:2007

Pages:297-302

Language:English

ISSN:02811847

CODEN:PHSTER

Document type:Conference article (CA)

Conference name:2nd International Symposium on Functional Materials

Conference date:May 16, 2007 - May 19, 2007

Conference location:Hangzhou, China

Conference code:71440

Publisher:Institute of Physics Publishing, Temple Back, Bristol, BS1 6BE, United Kingdom

Abstract:A phenanthrenyl-substituted diarylethene derivative (1,2-bis[5-phenanthryl- 2-methylthiophen-3-yl] perfluorocyclopentene, Ph-BMTFP) has been synthesized and its optoelectronic properties have been investigated. The photochromic reactivity of Ph-BMTFP was examined in hexane solution as well as in poly(methyl methacrylate) (PMMA) amorphous film. Upon irradiation with 313 nm UV light, the colorless solution turned purple, in which a visible absorption band was observed at 555 nm. In PMMA film, the new broad absorption band at λ <inf>max</inf> = 580 nm appeared when it was irradiated by 313 nm UV light. The compound exhibited good fluorescence in hexane solution and its fluorescence intensity decreased along with the photochromic reactivity upon irradiation with 313 nm UV light. This property could be potentially applied to high-density optical memory with fluorescence readout method. The holographic optical storage was performed successfully using Ph-BMTFP as the recording medium and polarization multiplexing holograms recording can effectively increase the information storage capacity of the holographic data storage. © 2007 The Royal Swedish Academy of Sciences.

Number of references:40

Main heading:Olefins

Controlled terms:Absorption spectra - Acoustooptical effects - Amorphous films - Optoelectronic devices - Photochromism - Ultraviolet visible spectroscopy

Uncontrolled terms:Optoelectronic properties - Ph-BMTFP - Polarization multiplexing holograms

Classification code:711.2 Electromagnetic Waves in Relation to Various Structures - 741.1 Light/Optics - 741.3 Optical Devices and Systems - 751.2 Acoustic Properties of Materials - 804.1 Organic Compounds - 933.2 Amorphous Solids

Treatment:Theoretical (THR); Experimental (EXP)

DOI:10.1088/0031-8949/2007/T129/066

Database:Compendex

Accession number:20115014591702

Title:A 355 TW femtosecond Ti:sapphire laser facility with three stage amplifiers

Authors:Wang, Zhaohua (1); Wei, Zhiyi (1); Zhang, Jie (1); Wang, Peng (1); Ling, Weijun (2); Zhu, Jiangfeng (1); Tian, Jinrong (1)

Corresponding author:Wang, Z.

Source title:Conference on Lasers and Electro-Optics, 2007, CLEO 2007

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

Monograph title:Conference on Lasers and Electro-Optics, 2007, CLEO 2007

Issue date:2007

Publication year:2007

Article number:4453720

Language:English

ISBN-13:9781557528346

Document type:Conference article (CA)

Conference name:Conference on Lasers and Electro-Optics, 2007, CLEO 2007

Conference date:May 6, 2007 - May 11, 2007

Conference location:Baltimore, MD, United states

Conference code:87568

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

Number of references:2

Main heading:Stages

Controlled terms:Sapphire

Uncontrolled terms:Femtoseconds - Peak power - Three-stage amplifiers - Ti: Sapphire laser

Classification code:402.2 Public Buildings - 482.2.1 Gems

DOI:10.1109/CLEO.2007.4453720

Database:Compendex

Accession number:20080211014790

Title:Analysis on resonance of air-borne opto-electronic tracking turntable and design of adaptive filter

Authors:Wang, Guo-Fu (1); Yu, Fa-Shan (1); Wang, Xu-Dong (1); Ma, Cai-Wen (2); Chen, Liang-Yi (2)

Author affiliation:(1) Department of Electronical Engineering and Automation, Henan Polytechnic University, Jiaozuo 454000, China; (2) Xi'an Institute of Optics and Precision Mechanics, Chinese Acad. of Sci., Xi'an 710119, China

Corresponding author:Wang, G.-F.(wanghust11@163.com)

Source title:Guangxue Jingmi Gongcheng/Optics and Precision Engineering

Abbreviated source title:Guangxue Jingmi Gongcheng

Volume:15

Issue:11

Issue date:November 2007

Publication year:2007

Pages:1802-1808

Language:Chinese

ISSN:1004924X

CODEN:GJGOF4

Document type:Journal article (JA)

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

Abstract:According to the characteristics of an air-borne opto-electronic tracking turntable and mathematics model of tracking turntable, a new adaptive filter based on angle changes of tracking turntable is presented to restrain the mechanical resonance of the opto-electronic trackng turntable under the conditions of mechanical structure and damp unchanged. The experiment results indicate that the maximum automatic tracking error improves 3′. The proposed algorithm is a fast and stable algorithm, which can satisfy a real-time adaptive filter and restrain mechanical resonance perfectly. At present, this method has been applied to certain type of air-borne tracking turntable successfully.

Number of references:9

Main heading:Adaptive filters

Controlled terms:Adaptive filtering - Mathematical models - Optoelectronic devices - Resonance - Servomechanisms

Uncontrolled terms:Air borne opto-electronic tracking turntable - Mechanical resonance - Servo system

Classification code:731.1 Control Systems - 732.1 Control Equipment - 741.3 Optical Devices and Systems - 921 Mathematics

Treatment:Experimental (EXP)

Database:Compendex

Accession number:20072710692403

Title:Experimental and theoretical studies of optically driven rotation of calcium carbonate particles

Authors:Lei, Ming (0); Yao, Bao-Li (0)

Corresponding author:Lei, M.

Corr. author affiliation:State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Acad. of Sci., Xi'an 710068, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:36

Issue:5

Issue date:May 2007

Publication year:2007

Pages:816-819

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, 710068, China

Abstract:The mechanisms of optically driven rotation of particles by using orbital angular momentum and spin angular momentum of light as well as by using specially shaped particles are analyzed in this paper. An optical tweezers is set up in the experiment. It can not only trap and move micro-sized particles but also rotate birefringent calcium carbonate particles by using the spin angular momentum transfer of the circular polarized light to the particles. It is found that the optical rotation depends not only on the polarization of the incident light but also on the shape of the particle. Various rotation phenomena observed in our experiment are analysed and explained. The maximal rotation speed of the calcium carbonate particle can reach 12 rps. The rotation speed is proportional to the light intensity.

Number of references:16

Database:Compendex

Accession number:20071710574674

Title:Detection of small moving targets in staring images sequence with complex background and low contrast

Authors:Cao, Guo-Hua (1); Qu, You-Shan (2); Wang, Yan-Fei (1); Fan, Xue-Wu (2); Su, Cheng-Zhi (1)

Author affiliation:(1) M and E Engineering College, Changchun University of Science and Technology, Changchun, Jilin, 130022, China; (2) Xi'an Institute of Optics and Precision Mechanics, CAS, Xi'an, 710068, China

Corresponding author:Cao, G.-H.

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

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:6279 PART 3

Monograph title:27th International Congress on High-Speed Photography and Photonics

Issue date:2007

Publication year:2007

Article number:62795B

Language:English

ISSN:0277786X

CODEN:PSISDG

ISBN-10:0819463493

ISBN-13:9780819463494

Document type:Conference article (CA)

Conference name:27th International Congress on High-Speed Photography and Photonics

Conference date:September 17, 2006 - September 22, 2006

Conference location:Xi'an, China

Conference code:69475

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

Abstract:A detection algorithm for small moving targets is proposed. The new algorithm firstly utilizes convolution filtering for noise smoothing, and then a proposed preprocessing method based on the norm of the difference vectors of the processed images sequence is applied to remove most of low-frequency background. Furthermore, optic flow technique is adopted to segment the doubtful small moving targets from the subimage remained by preprocessing. Finally, the statistic information for each of doubtful small moving targets is calculated. From the statistical feature, a determining criterion is established to determine whether each of the doubtful small moving targets is a true target or not. Because the preprocessing approach can get rid of most of the low-frequency background effectively, the calculation quantity of the sequential processing by optic flow is decreased largely. The experiments in a designed test system prove that the proposed detection algorithm can detect small moving targets in SOfps, 512x512 pixels, staring images sequence with SNR no less than 3dB, and the correct detecting probability is up to 96%, which can satisfy the real time processing requirements in practice.

Number of references:17

Main heading:Image segmentation

Controlled terms:Algorithms - Probability - Signal to noise ratio - Statistical methods - Target tracking - Vectors

Uncontrolled terms:Complex background - Difference vector - Optic flow - Small moving target

Classification code:716.1 Information Theory and Signal Processing - 716.2 Radar Systems and Equipment - 723.2 Data Processing and Image Processing - 921.1 Algebra - 922.1 Probability Theory - 922.2 Mathematical Statistics

Treatment:Theoretical (THR); Experimental (EXP)

DOI:10.1117/12.725378

Database:Compendex

Accession number:20074310888818

Title:Detection and recognition of low velocity body signal based on high order cumulant

Authors:Zou, Yong-Xing (0); Zhou, Ren-Kui (0)

Corresponding author:Zou, Y.-X.(zou_yx@opt.ac.cn)

Corr. author affiliation:Xi'an Institute of Optics and Precision Mechanics, CAS, Xi'an 710068, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:36

Issue:9

Issue date:September 2007

Publication year:2007

Pages:1738-1741

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, 710068, China

Abstract:The detection and identification of low velocity body signal under strong clutter is a difficulty in the field of signal processing. The analysis of sampled data indicates that the clutter of stationary objects such as wall is gauss distributed and the signal reflected by low velocity body approximates to sinusoidal harmonic process. The clutter is suppressed because the high order cumulant of gauss distributed clutter is equal to zero. The algorithms of the detection and identification of low velocity body signal is put forward by high order spectrum analysis and FFT accumulation. Experimental results show that the system can detect low velocity body signal 14 m far away behind the concrete wall 30 cm thick.

Number of references:6

Database:Compendex

Accession number:20071410529871

Title:Analysis and estimation of power dissipationin charge coupled devices

Authors:Wang, Hua (0); Wen, De-Sheng (0); Qiu, Yue-Hong (0); Ran, Xiao-Qiang (0)

Corresponding author:Wang, H.(huawang8010@opt.ac.cn)

Corr. author affiliation:Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710068, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:36

Issue:1

Issue date:January 2007

Publication year:2007

Pages:174-179

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, China

Abstract:Power dissipation in CCD, which is composed of static power dissipation and dynamic power dissipation, is analyzed based on the clock register structure in CCD. Static power is dissipated in the on-chip output amplifier. Dynamic power dissipation, however, is the energy dissipation caused by the charged or discharged current flowing through the resistance of polysilicon clock line and the series equivalent resistance of the clock electrode when the clock pulse is applied to the device. The methods to estimate these two power dissipations are proposed in this paper. As for estimating the dynamic power dissipation, lumped model, distributed model and PSpice simulating are presented in detail. The methods are applied in calculating the power dissipation in CCD47-20 after analyzing its work mode and work timing. In the end, the validity of the calculating methods is verified by comparing the estimated value with the measured value.

Number of references:9

Database:Compendex

Accession number:20071710574644

Title:Passive Q-switched fiber laser with SESAM in ytterbium-doped double-clad fiber

Authors:Gao, Cun-Xiao (1); Zhao, Wei (1); Wang, Yi-Shan (1); Zhu, Shao-Lan (1); Chen, Guo-Fu (1); Wang, Yong-Gang (2)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, 710119; (2) Institute of Semiconductors, Chinese Academy of Sciences, Beijing, 100083, China

Corresponding author:Gao, C.-X.

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

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:6279 PART 2

Monograph title:27th International Congress on High-Speed Photography and Photonics

Issue date:2007

Publication year:2007

Article number:62794G

Language:English

ISSN:0277786X

CODEN:PSISDG

ISBN-10:0819463493

ISBN-13:9780819463494

Document type:Conference article (CA)

Conference name:27th International Congress on High-Speed Photography and Photonics

Conference date:September 17, 2006 - September 22, 2006

Conference location:Xi'an, China

Conference code:69475

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

Abstract:A passively Q-switched ytterbium-doped double-clad fiber laser with SESAM as a saturable absorber is demonstrated experimentally. This system showed up to 18.7mW output power, up to 29.4 kHz repetition rate, a maximum pulse energy of 0.636μJ and a minimum pulse duration of 3.148 μs. The characteristics of pulse were investigated, and the theoretical analysis agree well with the experimental results.

Number of references:9

Main heading:Fiber lasers

Controlled terms:Doping (additives) - Pulse width modulation - Q switched lasers - Ytterbium compounds

Uncontrolled terms:Passive Q-switch - Saturable absorbers - SESAM - Ytterbium doped double clad fibers

Classification code:712.1 Semiconducting Materials - 716 Telecommunication; Radar, Radio and Television - 744.1 Lasers, General - 744.4 Solid State Lasers - 804.1 Organic Compounds

Treatment:Theoretical (THR); Experimental (EXP)

DOI:10.1117/12.725390

Database:Compendex

Accession number:20073310766853

Title:Designing on driving schedule generator for array CCD and handware based on CPLD

Authors:Chen, Xue-Fei (0); Wen, De-Sheng (0); Zheng, Pei-Yun (0)

Corresponding author:Chen, X.-F.(xuefei_C@163.com)

Corr. author affiliation:Xi'an Institute of Optics Precision Mechanics, Chinese Acad. of Sci., Xi'an 710068, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:36

Issue:SUPPL.

Issue date:June 2007

Publication year:2007

Pages:282-285

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, 710068, China

Abstract:Driving schedules of FTT1010-M frame transfer CCD have been examined in detail. The driving schedule generator with exposure time had hardware have been designed for array CCD camera. Complex programmable logic device (CPLD) is chosen as hardware design platform, and driving schedule generator has been described with VHDL. The function simulation of the system is successfully fulfilled and the design is fitted into EPM7160SLC84-10 (a CPLD produced by ALTERA). Hardware experiments show that designed generator is suitable for the driving of high-speed CCD image sensor, and the exposure time of camera could be adjusted according to different applications.

Number of references:6

Database:Compendex

Accession number:20073310766814

Title:Effect of N-doped concentration in SiC films on photosensitive characteristics

Authors:Zhao, Wu (0); Yan, Jun-Feng (0); Zhai, Chun-Xue (0); Deng, Zhou-Hu (0); Yun, Jiang-Ni (0); Zhang, Zhi-Yong (0)

Corresponding author:Zhao, W.(zhaowu@nwu.edu.cn)

Corr. author affiliation:Xi'an Institute of Optics and Precision Mechanics, Chinese Acad. of Sci., Xi'an 710119, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:36

Issue:SUPPL.

Issue date:June 2007

Publication year:2007

Pages:120-122

Language:English

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, 710068, China

Abstract:The photosensitivity of SiC films grown under different N concentration has been studied in situ during the growing process of SiC films, which prepared by hot filament chemical vapor deposition (HFCVD). Experiment on photosensitivity characteristics of the samples preformed both at room and high temperature (410°C), respectively. The results show that the photosensitivity of samples is influenced by the processing parameters of preparation and it is almost identical at room and high temperature. There is certain photosensitivity for the SiC films in different wavelength conditions. This indicates that SiC thin films will have a good potential application for high temperature photosensitive sensor.

Number of references:14

Database:Compendex

Accession number:20071410529839

Title:The RF circuit embedded in DFB laser negative effect under gain-switching operation

Authors:Liu, Yuan-Shan (0); Zhang, Jian-Guo (0); Zhao, Wei (0)

Corresponding author:Liu, Y.-S.(bull-0601@opt.ac.cn)

Corr. author affiliation:State Key Laboratory of Transient Optics Technology, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710068, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:36

Issue:1

Issue date:January 2007

Publication year:2007

Pages:13-17

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, China

Abstract:The abnormal spectrum phenomenon of distributed feedback (DFB) laser embedded with RF circuit generates under gain-switching operation was analyzed. Time-domain and frequency-domain output of the laser with normal condition (small signal driving) and gain-switched condition (large signal driving), were compared and respectively analyzed. The results show that instantaneous invalidation of the DFB laser under gain-switching operation directly causes multi-wavelength spectrum phenomenon.

Number of references:13

Database:Compendex

Accession number:20071410529845

Title:High- precision and high-reliability IR photoelectronic time measurement system

Authors:Zhang, Wen-Wen (0); Ouyang, Xian (0); Bai, Yong-Lin (0); Liu, Bai-Yu (0)

Corresponding author:Zhang, W.-W.(zw_1977@163.com)

Corr. author affiliation:State Key Laboratory of Transient and Photonics Technology, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710068, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:36

Issue:1

Issue date:January 2007

Publication year:2007

Pages:39-42

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, China

Abstract:Based on the standard for precision and reliability that measurement system used in missile range is to be up to, a new-style IR photoelectronic time measurement system is designed, which is in virtue of embedded PC/104 and CPLD. Structure of the system, principle of measurement and the realization of it are introduced in detail. The design is proved to be successful by the results of test in the missile range. This system has so powerful adaptive capacity to formidable working conditions that it is available with the temperature from -35°C to 45°C. It exhibits so stable precision that its measurement error is less than 30 μs. The anticipation is realized perfectly.

Number of references:8

Database:Compendex

Accession number:20080411059925

Title:Micromachining of an in-fiber extrinsic Fabry-Perot interferometric sensor by using a femtosecond laser

Authors:Wang, Wei (1); Rao, Yun-Jiang (1); Tang, Qing-Tao (1); Deng, Ming (1); Zhu, Tao (1); Cheng, Guang-Hua (3)

Author affiliation:(1) Key Laboratory of Optoelectronic Technology and Systems, Chongqing University, Chongqing 400044, China; (2) Key Laboratory of Broadband Optical Fiber Transmission and Communication Networks Technologies, University of Electronic Science and Technology of China, Chengdu 610054, China; (3) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Acad. of Sci., Xi'an 710068, China

Corresponding author:Wang, W.(weiwei19840225@126.com)

Source title:Zhongguo Jiguang/Chinese Journal of Lasers

Abbreviated source title:Zhongguo Jiguang

Volume:34

Issue:12

Issue date:December 2007

Publication year:2007

Pages:1660-1664

Language:Chinese

ISSN:02587025

CODEN:ZHJIDO

Document type:Journal article (JA)

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

Abstract:The fabrication of a micromachining extrinsic Fabry-Perot (F-P) interferometer (MEFPI) within a conventional single-mode fiber (SMF) by using a 800 nm femtosecond laser was reported in this paper. The strain and temperature characteristics of the MEFPI are investigated. The experimental results show that the strain sensitivity is 0.006 nm/μΕ, and linearity is 99.69% at the range of 0 to 350 μΕ. Furthermore, the interference fringe of the MEFPI shifts about 0.15 nm to the short wavelength while the temperature rises from 20°C to 100°C, Such kind of in-fiber interference sensors has many advantages, such as compact size, good reliability, low cost, easy fabrication and mass-production, which offers great potential for sensing applications.

Number of references:11

Main heading:Fiber optic sensors

Controlled terms:Fabry-Perot interferometers - Guided electromagnetic wave propagation - Micromachining - Optical fibers - Single mode fibers - Ultrashort pulses

Uncontrolled terms:Femtosecond laser fabrication - Fiber Fabry-Perot (F-P) cavity - Guided wave - Micromachining extrinsic Fabry-Perot interferometer (MEFPI) - Optical fiber sensors

Classification code:732.2 Control Instrumentation - 741.1.2 Fiber Optics - 744.1 Lasers, General - 941.3 Optical Instruments

Treatment:Experimental (EXP)

Database:Compendex

Accession number:20074510909563

Title:Interference image registration based on Fourier-Mellin algorithm

Authors:Gao, Ying-Ying (1); Yang, Jian-Feng (1); Ma, Xiao-Long (1); Chen, Hao-Feng (1)

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

Corresponding author:Gao, Y.-Y.(sarameet@163.com)

Source title:Guangxue Jingmi Gongcheng/Optics and Precision Engineering

Abbreviated source title:Guangxue Jingmi Gongcheng

Volume:15

Issue:9

Issue date:September 2007

Publication year:2007

Pages:1415-1420

Language:Chinese

ISSN:1004924X

CODEN:GJGOF4

Document type:Journal article (JA)

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

Abstract:In order to align the distortion caused by the jitter of push-broom flat, the Fourier-Mellin algorithm is proposed to recover the interference image of a large aperture static interference imaging spectrometer. The rotation, scaling and translation parameters are acquired by Fourier-Mellin algorithm and phase correlation algorithm. The registration effect is testified by comparing the mosaic images before or after registration. The experimental results indicate that the registration of original interference image can be testified through vision observation. The registration precision of the algorithm reaches pixel level, which can meet the requirement of aligning the interference image to non-distortion image.

Number of references:11

Main heading:Image registration

Controlled terms:Algorithms - Distortion (waves) - Experiments - Image processing - Jitter - Pixels - Rotation - Spectrometers - Vision

Uncontrolled terms:Fourier Mellin algorithm - Interference image - Mosaic image - Phase correlation

Classification code:931.1 Mechanics - 921.6 Numerical Methods - 901.3 Engineering Research - 941.3 Optical Instruments - 742.2 Photographic Equipment - 723.2 Data Processing and Image Processing - 716.1 Information Theory and Signal Processing - 741.2 Vision

Treatment:Applications (APP); Experimental (EXP)

Database:Compendex

Accession number:20071110479592

Title:Environmentally stable ytterbium figure-of-eight fiber laser producing 177-fs pulses

Authors:Zhao, Wei (1); Ma, Haiquan (1); Zhang, Wei (1); Liu, Chang (1); Chen, Guofu (1); Lu, Keqing (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, 710068, China

Corresponding author:Zhao, W.(weiz@opt.ac.cn)

Source title:Optics Communications

Abbreviated source title:Opt Commun

Volume:273

Issue:1

Issue date:May 1, 2007

Publication year:2007

Pages:242-245

Language:English

ISSN:00304018

CODEN:OPCOB8

Document type:Journal article (JA)

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

Abstract:Pulses of 177 fs and 1035 nm, with average power of 1.2 mW, have been generated directly from a passively mode-locked Yb-doped figure-of-eight fiber laser, with a nonlinear optical loop mirror for mode-locking and pairs of diffraction gratings for intracavity dispersion compensation. To our knowledge, these are the shortest pulses ever to come from a passively mode-locked Yb-doped figure-of-eight fiber laser. This represents a 5-fold reduction in pulse duration compared with that of previously reported passively mode-locked Yb-doped figure-of-eight fiber lasers. Stable pulse trains are produced at the fundamental repetition rate of the resonator, 24.0 MHz. © 2007 Elsevier B.V. All rights reserved.

Number of references:16

Main heading:Ytterbium

Controlled terms:Diffraction gratings - Fiber lasers - Laser mode locking - Laser pulses - Nonlinear optics - Optical properties

Uncontrolled terms:Fiber laser and amplifiers - Figure-of-eight fiber lasers - Ultrafast optical techniques

Classification code:547.2 Rare Earth Metals - 741.1.1 Nonlinear Optics - 741.3 Optical Devices and Systems - 744.1 Lasers, General - 744.4 Solid State Lasers

Treatment:Experimental (EXP)

DOI:10.1016/j.optcom.2006.12.041

Database:Compendex

Accession number:20071710574693

Title:Design of hybrid diffractive/ refractive optical system by the method of P-W-C

Authors:Hong, Xinhua (1); Chen, Liwu (2); Yang, Jianfeng (2); Zhao, Baochang (2)

Author affiliation:(1) China Three Gorges University, Hubei Yichang, 443002, China; (2) Xian Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xian 710068, China

Corresponding author:Hong, X.

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

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:6279 PART 3

Monograph title:27th International Congress on High-Speed Photography and Photonics

Issue date:2007

Publication year:2007

Article number:62795X

Language:English

ISSN:0277786X

CODEN:PSISDG

ISBN-10:0819463493

ISBN-13:9780819463494

Document type:Conference article (CA)

Conference name:27th International Congress on High-Speed Photography and Photonics

Conference date:September 17, 2006 - September 22, 2006

Conference location:Xi'an, China

Conference code:69475

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

Abstract:The structure parameter of hybrid diffractive/refractive optical system has been solved by the method of P-W-C. The primary aberration equation for diffractive system has been deduced. Combination of 3 pieces lenses , the diffractive/refractive hybrid optical system was designed : No.1 and No.3 are common glasses; No.2 is binary optical lenses (BOL). The results show: The Longitudinal Aberration is good in 0.6 and 0.8-0.9 apertures for the lenses. When frequency is 301p/mm, the modulation transfer function (MTF) is close to diffractive limit in 0.5 field angle; the modulation transfer function (MTF) is close to 0.7 in edge field. The design method can be used for diffractive/ refractive hybrid optical system.

Number of references:6

Main heading:Optical systems

Controlled terms:Aberrations - Diffractive optics - Optical instrument lenses - Optical transfer function - Problem solving - Refractive index

Uncontrolled terms:Applied optics - Binary optical lenses (BOL) - Hybrid diffractive - Refractive optical system

Classification code:723.4 Artificial Intelligence - 741.1 Light/Optics - 741.3 Optical Devices and Systems

Treatment:Theoretical (THR)

DOI:10.1117/12.725482

Database:Compendex

Accession number:20080111005529

Title:Research on pupil configuration of equilateral six sub-apertures sparse-aperture system

Authors:Yi, Hong-Wei (0); Li, Ying-Cai (0); Fan, Chao (0)

Corresponding author:Yi, H.-W.(Yi_HongWei@126.com)

Corr. author affiliation: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:36

Issue:11

Issue date:November 2007

Publication year:2007

Pages:2062-2065

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, 710068, China

Abstract:The relations of sub-apertures configurations with the imaging performance are discussed. A new spare aperture design named Equilateral Six Sub-apertures is proposed. This configuration is composed of six sub-apertures. Its construction and pupil function is given. In order to illuminate the imaging performance, the modulation transfer function of Equilateral Six Sub-apertures, Golay6 and MMT have been simulated respectively and compared with one another.

Number of references:5

Database:Compendex

Accession number:20080111002732

Title:First principles study of electronic structure of Zn<inf>1-x</inf>Fe<inf>x</inf>O

Authors:Shao, Si-Fei (1); Zhang, Fu-Chun (1); Zhang, Wei-Hu (1); Zhang, Zhi-Yong (4)

Author affiliation:(1) College of Physics and Electronic Information, Yan'an University, Yan'an 716000, China; (2) College of Xi'an Innovation, Yan'an University, Xi'an 710100, China; (3) Xi'an Institute of Optics and Precision Mechanics, Acadecmia Sinica, Xi'an 710068, China; (4) Information Science and Technology Institution, Northwest University, Xi'an 710069, China

Corresponding author:Shao, S.-F.

Source title:Gongneng Cailiao/Journal of Functional Materials

Abbreviated source title:Gongneng Cailiao

Volume:38

Issue:11

Issue date:November 2007

Publication year:2007

Pages:1802-1805

Language:Chinese

ISSN:10019731

CODEN:GOCAEA

Document type:Journal article (JA)

Publisher:Journal of Functional Materials, P.O. Box 1512, Chongqing, 630700, China

Abstract:The electronic and geometry structure of ZnO was calculated and the doping effects were analyzed in band structure, density of state, magnetics properties. It was performed by adopting the First-principles calculation of plane wave ultra-soft pseudo-potential technology based upon the density function theory (DFT). The results indicate that the Fe3+ ion did not occupy exactly the Zn2+ sites, but is displaced along the c axis and d displacement Δz=0.7, It is the important causes that induced ferromagnetism, it is consistent between theoretical results and experiment results.

Number of references:13

Main heading:Ferromagnetism

Controlled terms:Band structure - Doping (additives) - Electronic structure - Iron - Magnetic properties - Semiconductor materials - Zinc oxide

Uncontrolled terms:Density of state - Doping effects - First principles - Geometry structure

Classification code:545.1 Iron - 701.2 Magnetism: Basic Concepts and Phenomena - 712.1 Semiconducting Materials - 804.2 Inorganic Compounds - 931.3 Atomic and Molecular Physics - 933 Solid State Physics

Treatment:Applications (APP)

Database:Compendex

Accession number:20071110487935

Title:Transfer property of electron pulse in a femto-second electron diffraction system

Authors:Tian, Jin-Shou (0); Zhao, Bao-Sheng (0); Wu, Jian-Jun (0); Zhao, Wei (0); Hou, Xun (0); Liu, Yun-Quan (0); Zhang, Jie (0)

Corresponding author:Tian, J.-S.(tianjs@hotmail.com)

Corr. author affiliation:Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710068, China

Source title:Wuli Xuebao/Acta Physica Sinica

Abbreviated source title:Wuli Xuebao

Volume:56

Issue:1

Issue date:January 2007

Publication year:2007

Pages:123-128

Language:Chinese

ISSN:10003290

CODEN:WLHPAR

Document type:Journal article (JA)

Publisher:Science Press, Beijing, China

Abstract:An ultra-fast electron diffraction system has been designed. The static and dynamic characters of an electron pulse with 150 fs temporal dispersion are studied during its transmission in the whole ultra-fast electron diffraction system, including the size of the electron spot, temporal dispersion, distribution of azimuths and elevation angles. The initial status of the photoelectrons are put down by Monte Carlo method, both the two dimensional and three dimensional electric fields are calculated by finite difference method and the magnetic flux are calculated by finite element method.

Number of references:6

Database:Compendex

Accession number:20072810697776

Title:New method to locate satellite SAR imagery

Authors:Li, Li-Gang (1); You, Hong-Jian (1); Peng, Hai-Liang (1); Wu, Yi-Rong (1); Liu, Bo (2); Zhou, Qiang (1)

Author affiliation:(1) National Key Laboratory of Microwave Imaging Technology, Institute of Electronics, Chinese Academy of Sciences, Beijing 100080, China; (2) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710068, China; (3) Graduate School, Chinese Academy of Science, Beijing 100039, China; (4) Center for Space Science and Applied Research, Chinese Academy of Sciences, Beijing 100080, China

Corresponding author:Li, L.-G.

Source title:Dianzi Yu Xinxi Xuebao/Journal of Electronics and Information Technology

Abbreviated source title:Dianzi Yu Xinxi Xuebao

Volume:29

Issue:6

Issue date:June 2007

Publication year:2007

Pages:1441-1444

Language:Chinese

ISSN:10095896

CODEN:DKXUEC

Document type:Journal article (JA)

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

Abstract:In this paper, the satellite SAR imagery is regarded as an image which is acquired from the frame projection sensor approximately based on photogrametry theory. The satellite SAR collinearity equation is revised and a new location model is proposed. As an example, the RadarSat Imagery is tested. Experiment result demonstrates the new model formulation is simple and the resolution is stable without any orbit ephemeris and imaging parameters, and also location accuracy reaches pixels.

Number of references:4

Main heading:Synthetic aperture radar

Controlled terms:Imaging techniques - Satellites - Sensors

Uncontrolled terms:Frame projection - Photogrametry theory - RadarSat Imagery

Classification code:655.2 Satellites - 716.2 Radar Systems and Equipment - 732.2 Control Instrumentation - 746 Imaging Techniques

Treatment:Applications (APP); Experimental (EXP)

Database:Compendex

Accession number:20073410776605

Title:Optical path difference and detection mode of Sagnac interferometer used for upper atmospheric detection

Authors:Ye, Jianyong (1); Zhang, Chunmin (1); Zhao, Baochang (2); Tang, Yuanhe (1)

Author affiliation:(1) School of Science, Xi'an Jiaotong University, Xi'an 710049, China; (2) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710068, China

Corresponding author:Ye, J.(jeyawn@gmail.com)

Source title:Guangxue Xuebao/Acta Optica Sinica

Abbreviated source title:Guangxue Xuebao

Volume:27

Issue:7

Issue date:July 2007

Publication year:2007

Pages:1145-1150

Language:Chinese

ISSN:02532239

CODEN:GUXUDC

Document type:Journal article (JA)

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

Abstract:Upper atmospheric detection based on temporarily and spatially mixed modulated detection mode was put forward. The accurate optical path difference versus the incidence angle of a modified Sagnac interferometer was calculated by the ray-tracing method. Theoretically the parameter of the interferometer was calculated and analyzed. Compared with the combination of the same and different material, it can be concluded that different combination of material is more suited for upper atmospheric detection. This interferometer has many distinct advantages, such as steady state, wide field of view, long optical path difference, temporarily and spatially mixed modulated detection mode etc.. The research developed the theory of upper atmospheric detection and it is quite significant to the research of detection technique, detection mode and engineering in both theory and practice.

Number of references:20

Main heading:Atmospheric optics

Controlled terms:Calculations - Interferometers - Ray tracing

Uncontrolled terms:Modified Sagnac interferometer - Optical path difference - Temporarily and spatially mixed modulated detection mode - Upper atmospheric detection

Classification code:443.1 Atmospheric Properties - 741.1 Light/Optics - 921 Mathematics - 941.3 Optical Instruments

Treatment:Theoretical (THR)

Database:Compendex

Accession number:20071710574538

Title:High power short pulse fiber lasers

Authors:Guofu, Chen (1); Wei, Zhao (1); Yishan, Wang (1); Guanglei, Ding (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, CAS, Xi'an 710068, China

Corresponding author:Guofu, C.(chengf@opt.ac.cn)

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

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:6279 PART 1

Monograph title:27th International Congress on High-Speed Photography and Photonics

Issue date:2007

Publication year:2007

Article number:62791A

Language:English

ISSN:0277786X

CODEN:PSISDG

ISBN-10:0819463493

ISBN-13:9780819463494

Document type:Conference article (CA)

Conference name:27th International Congress on High-Speed Photography and Photonics

Conference date:September 17, 2006 - September 22, 2006

Conference location:Xi'an, China

Conference code:69475

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

Abstract:This paper describes characteristics of a short pulse doped rare earth fiber laser and amplifier. We have obtained very stable pico-second and femto-second laser pulses from fiber laser. An all-fiber laser and amplifier of a double-clad fiber are researched in detail. The pulse of 177fs at wavelength of &sim;1.50um has been got from fiber laser. The energy of single pulse of 153μJ has been obtained after an amplifier of a double-clad fiber at repetition-rate of 30 KHz.

Number of references:5

Main heading:Fiber amplifiers

Controlled terms:High power lasers - Power amplifiers - Ultrashort pulses - Wavelength

Uncontrolled terms:Repetition rates - Short light pulses

Classification code:713.1 Amplifiers - 741.1 Light/Optics - 744.1 Lasers, General - 744.4 Solid State Lasers

Treatment:Theoretical (THR)

DOI:10.1117/12.725177

Database:Compendex

Accession number:20071610559015

Title:Photometric characteristic measurement of space target

Authors:Gao, Xin (0); Wang, Jian-Li (0); Zhou, Si-Zhong (0); Huang, Hui-Ming (0); Xiong, Ren-Sheng (0)

Corresponding author:Gao, X.(gaoxin526@sina.com)

Corr. author affiliation:Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710068, China

Source title:Guangdian Gongcheng/Opto-Electronic Engineering

Abbreviated source title:Guangdian Gongcheng

Volume:34

Issue:3

Issue date:March 2007

Publication year:2007

Pages:42-45

Language:Chinese

ISSN:1003501X

CODEN:GUGOEC

Document type:Journal article (JA)

Publisher:Chinese Academy of Sciences, Chengdu, Sichuan, China

Abstract:The photometric characteristic of space target can reflect the movement in orbit. According to photometric measurement, the orbit performance of space target is judged and the identification catalog about space target is carried out. Compared photometric characteristic measurement photometer with CCD measurement, adopted the method about star comparison, and obtained the stellar magnitude data of space target. The experimental results show that two kinds of methods on magnitude measurement have the same precision, but CCD measurement can measure the photometric characteristic of space target in the daytime.

Number of references:3

Database:Compendex

Accession number:20071010476397

Title:Enhanced photoluminescence of Nd<inf>2</inf>O<inf>3</inf> nanoparticles modified with silane-coupling agent: Fluorescent resonance energy transfer analysis

Authors:Yu, Kehan (1); Qiu, Xiaoming (1); Xu, Xiangxing (1); Wei, Wei (1); Peng, Bo (1); Zhou, Zhiwei (3)

Author affiliation:(1) State Key Laboratory for Advanced Photonic Materials and Devices, Fudan University, Shanghai 200433, China; (2) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Science (CAS) Xi'an, Shanxi 710119, China; (3) Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China

Corresponding author:Peng, B.(bpeng@fudan.edu.cn)

Source title:Applied Physics Letters

Abbreviated source title:Appl Phys Lett

Volume:90

Issue:9

Issue date:2007

Publication year:2007

Article number:091916

Language:English

ISSN:00036951

CODEN:APPLAB

Document type:Journal article (JA)

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

Abstract:A liquid laser medium with a lifetime of 492 μs and a fluorescent quantum efficiency of 52.5% has been presented by stably dispersing dimethyl dichorosilane-modified Nd2 O3 nanoparticles in dimethylsulfoxide. Its optical properties and mechanism were investigated and explained by fluorescence resonance energy transfer theory. The calculation result shows that the quenching of NdIII F 32 4 &rarr I 112 4 transition via O-H vibrational excitation can be eventually neglected. The main reason is that the silane-coupling agent molecules remove the -OH groups on Nd2 O3 nanoparticles and form a protective out layer. © 2007 American Institute of Physics.

Number of references:21

Main heading:Nanoparticles

Controlled terms:Chemical modification - Dimethyl sulfoxide - Energy transfer - Liquid lasers - Neodymium compounds - Photoluminescence - Quantum efficiency - Silanes

Uncontrolled terms:Fluorescence resonance - Fluorescent quantum efficiency - Resonance energy transfer - Silane coupling agent

Classification code:933 Solid State Physics - 931.4 Quantum Theory; Quantum Mechanics - 804.2 Inorganic Compounds - 804.1 Organic Compounds - 802.2 Chemical Reactions - 761 Nanotechnology - 744.3 Liquid Lasers - 741.1 Light/Optics - 525.4 Energy Losses (industrial and residential)

Treatment:Theoretical (THR); Experimental (EXP)

DOI:10.1063/1.2710479

Database:Compendex

Accession number:20074510910152

Title:Tunable parametric fluorescence using a single crystal

Authors:Hou, Mi-Na (0); Liu, Hong-Jun (0); Zhao, Wei (0); Wang, Yi-Shan (0)

Corresponding author:Hou, M.-N.(houmina@opt.ac.cn)

Corr. author affiliation:State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Science, Xi'an 710119, China

Source title:Wuli Xuebao/Acta Physica Sinica

Abbreviated source title:Wuli Xuebao

Volume:56

Issue:10

Issue date:October 2007

Publication year:2007

Pages:5872-5877

Language:Chinese

ISSN:10003290

CODEN:WLHPAR

Document type:Journal article (JA)

Publisher:Science Press, Beijing, 100085, China

Abstract:In this paper, we investigate the mechanism of tunable parametric superfluorescence (PS) based on the second harmonic generation and parametric processes taking place in the same nonlinear crystal (BBO). The tunable spectra of PS has been generated between 480 nm and 530 nm, which is pumped by the second-harmonic from the high-power Ti: Sapphire laser system at 1 kHz repetition rate. We present the generation mechanism of PS theoretically and simulate the process of PS ring using the amplification transfer function. The experiment and the theory show that PS will appear when the phase matching angle for second-harmonic generation is close to the optimal pump angle for optical parametric generation, and then the tunable spectra of PS are generated by slightly adjusting the crystal angle. The result provides a theoretical basis for controlling the generation of PS and quantum entanglement states, which is of great significance for the development of quantum imaging, quantum communications and other applications.

Number of references:23

Database:Compendex

Accession number:20073110715801

Title:Unified theory for Goos-Hänchen and Imbert-Fedorov effects

Authors:Li, Chun-Fang (1)

Corresponding author:Li, C.-F.

Source title:Physical Review A - Atomic, Molecular, and Optical Physics

Abbreviated source title:Phys Rev A

Volume:76

Issue:1

Issue date:July 12, 2007

Publication year:2007

Article number:013811

Language:English

ISSN:10502947

E-ISSN:10941622

CODEN:PLRAAN

Document type:Journal article (JA)

Publisher:American Physical Society, One Physics Ellipse, College Park, MD 20740-3844, United States

Abstract:A unified theory is advanced to describe both the lateral Goos-Ha&die;nchen (GH) effect and the transverse Imbert-Fedorov (IF) effect, through representing the vector angular spectrum of a three-dimensional light beam in terms of a two-form angular spectrum consisting of its two orthogonal polarized components. From this theory, the quantization characteristics of the GH and IF displacements are obtained, and the Artmann formula for the GH displacement is derived. It is found that the eigenstates of the GH displacement are the two orthogonal linear polarizations in this two-form representation, and the eigenstates of the IF displacement are the two orthogonal circular polarizations. The theoretical predictions are found to be in agreement with recent experimental results. © 2007 The American Physical Society.

Number of references:26

Main heading:Atomic physics

Controlled terms:Eigenvalues and eigenfunctions - Light - Polarization - Spectrum analysis

Uncontrolled terms:Light beams - Orthogonal polarized components - Quantization - Vector angular spectrum

Classification code:701.1 Electricity: Basic Concepts and Phenomena - 741.1 Light/Optics - 921 Mathematics - 921.1 Algebra - 931.3 Atomic and Molecular Physics

Treatment:Theoretical (THR); Experimental (EXP)

DOI:10.1103/PhysRevA.76.013811

Database:Compendex

Accession number:20104313316263

Title:High quality GaN display films growth on pre-treated sapphire substrate

Authors:Peng, Dongsheng (1); Feng, Yuchun (3); Niu, Hanben (3); Liu, Xiaofeng (3)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710068, China; (2) Graduate School, Chinese Academy of Sciences, Beijing 100049, China; (3) Institute of Optoelectronics, Shenzhen University, Shenzhen 518060, China

Corresponding author:Peng, D.(HBNiu@szu.edu.cn)

Source title:AD'07 - Proceedings of Asia Display 2007

Abbreviated source title:AD - Proc. Asia Disp.

Volume:1

Monograph title:AD'07 - Proceedings of Asia Display 2007

Issue date:2007

Publication year:2007

Pages:859-862

Language:English

ISBN-13:9787561752289

Document type:Conference article (CA)

Conference name:Asia Display 2007, AD'07

Conference date:March 12, 2007 - March 16, 2007

Conference location:Shanghai, China

Conference code:81864

Sponsor:The Society for Information Display

Publisher:East China Normal University Press, 3663 Zhongshan Road (N), Shanghai, People's Republic of China, 200062, China

Abstract:Etch pits on sapphire substrate surface are formed after surface treating. GaN films have been grown by LP-MOCVD on the sapphire substrate, which a half of it is pretreated by chemical etch. The crystal quality and optical quality of GaN films are analyzed by high-resolution double crystal X-ray rocking curve (XRC) and optical transmission measurement. These results indicate that the crystal quality of GaN determined by transmission measurement is in agreement with that determined by XRC, that the (0002) plane and (10-12) plane full-width at half-maximum by XRC of GaN films grown on pre-treated sapphire substrate are as low as 208.80 arcsec and 320.76 acrsec, respectively. The transmission spectrum of GaN is studied to assess the crystal and optical quality. The epilayer grown on pre-treated sapphire substrate exhibits excellent optical quality, in which the yellow luminescence (YL) is nearly invisible in the photoluminescence (PL) spectrum. The epilayer grown on the pre-treated sapphire substrate exhibits superior optical properties and crystal properties, in which the higher transmission ratio and the greater modulation depth can be shown in the transmission spectrum.

Number of references:10

Main heading:Optical films

Controlled terms:Epilayers - Epitaxial growth - Gallium alloys - Gallium nitride - Light transmission - Optical properties - Sapphire - Substrates - Superconducting films

Uncontrolled terms:Chemical etch - Crystal properties - Crystal qualities - Double crystals - Etch pits - GaN film - High quality - High resolution - LP-MOCVD - MOCVD - Modulation depth - Optical qualities - Optical transmission measurements - Photoluminescence spectrum - Sapphire substrates - Surface-treating - Transmission measurements - Transmission ratios - Transmission spectrums - X ray rocking curve - Yellow luminescence

Classification code:741.3 Optical Devices and Systems - 741.1 Light/Optics - 712.1.2 Compound Semiconducting Materials - 712.1 Semiconducting Materials - 708.3 Superconducting Materials - 549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals - 482.2.1 Gems

Database:Compendex

Accession number:20081811235225

Title:Fabrication and characteristics of highly birefringent polymer photonic crystal fiber

Authors:Zhang, Yani (1)

Author affiliation:(1) Department of Physics, Baoji College of Arts and Science, Shaanxi, Baoji 721007, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710068, China

Corresponding author:Zhang, Y.(zhangyn@opt.ac.cn)

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

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:6781

Monograph title:Passive Components and Fiber-based Devices IV

Issue date:2007

Publication year:2007

Article number:678110

Language:English

ISSN:0277786X

CODEN:PSISDG

ISBN-13:9780819469441

Document type:Conference article (CA)

Conference name:Passive Components and Fiber-based Devices IV

Conference date:November 2, 2007 - November 5, 2007

Conference location:Wuhan, China

Conference code:71945

Sponsor:The International Society for Optical Engineering (SPIE)

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

Abstract:A highly birefringent polarization maintaining photonic crystal fiber based on organic macromolecule polymer material was fabricated. The fiber has an elliptical core and three ring square hexagonal structure, with the average hole-diameter, d=2.5μm, and d/Λ=0.4. Polarization properties such as birefringence, beat length, polarization mode field were measured and numerically simulated. This research shows it is possible to fabricate high birefringence polarization maintaining photonic crystal fiber based on polymer at visible wavelength.

Number of references:14

Main heading:Optical fibers

Controlled terms:Birefringence - Computer simulation - Light polarization - Macromolecules - Photonic crystals - Polymers

Uncontrolled terms:High birefringence - Photonic crystal fiber - Polarization maintaining

Classification code:723.5 Computer Applications - 741.1.2 Fiber Optics - 741.3 Optical Devices and Systems - 815.1 Polymeric Materials - 931.3 Atomic and Molecular Physics

Treatment:Theoretical (THR)

DOI:10.1117/12.743200

Database:Compendex

Accession number:20071810580801

Title:Novel imaging interferometer for upper high speed atmospheric wind field survey

Authors:Zhang, ChunMin (1); Zhao, BaoChang (2); Li, YingCai (2); Ye, JianYong (1)

Author affiliation:(1) School of Science, Xi'an Jiaotong University, Xi'an 710049, China; (2) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710068, China

Corresponding author:Zhang, C.(zcm@mail.xjtu.edu.cn)

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

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:6279 PART 1

Monograph title:27th International Congress on High-Speed Photography and Photonics

Issue date:2007

Publication year:2007

Article number:62791D

Language:English

ISSN:0277786X

CODEN:PSISDG

ISBN-10:0819463493

ISBN-13:9780819463494

Document type:Conference article (CA)

Conference name:27th International Congress on High-Speed Photography and Photonics

Conference date:September 17, 2006 - September 22, 2006

Conference location:Xi'an, China

Conference code:69475

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

Abstract:A Novel Imaging Interferometer (Nil) based on modified Michelson interferometer for surveying the physical properties of upper high speed atmospheric wind filed is presented. Taking the natural airglow and auroral visible emission lines in the upper atmosphere as surveyed source, Nil can be used to retrieve the velocity and temperature of the upper high speed atmospheric wind field through the interference imaging spectroscopy coupled with the Doppler effect of electromagnetic wave. The optics system, survey principle, model and surveying method of four intensities are described. Simulated experimental of velocity and temperature of wind field is shown. Nil has the advantages of wide field of view, bigger OPD, high resolution, achromatic, thermally stable, and is suitable for measuring upper atmospheric wind field.

Number of references:16

Main heading:Michelson interferometers

Controlled terms:Doppler effect - Electromagnetic waves - Imaging systems - Light emission - Optical systems - Velocity measurement

Uncontrolled terms:Imaging interferometers - Interference imaging spectroscopy - Survey principles - Upper high speed atmospheric wind fields

Classification code:711.1 Electromagnetic Waves in Different Media - 741.1 Light/Optics - 741.3 Optical Devices and Systems - 746 Imaging Techniques - 941.3 Optical Instruments - 943.3 Special Purpose Instruments

Treatment:Theoretical (THR)

DOI:10.1117/12.725184

Database:Compendex

Accession number:20073410777715

Title:Parallel active contour model for main road segments extraction from high-resolution remote sensing images

Authors:Zhang, Dao-Bing (0); Liu, Bo (0); Wang, Hong-Qi (0)

Corresponding author:Zhang, D.-B.(gistty@sina.com)

Corr. author affiliation:Xi'an Institute of Optics and Precision Mechanical, CAS, Xi'an 710068, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:36

Issue:7

Issue date:July 2007

Publication year:2007

Pages:1345-1350

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, 710068, China

Abstract:An algorithm of parallel active contour model based on multi-scale frame is proposed to extract and represent main road segments from high-resolution remote sensing images. Energies in active contour model are redefined as following: Using parabola to model two sides of main road segments as a prior, adding parallel energy, and adopting gradients in multi-scale frame as exterior energy. Optimizing the model results in location the two edges of road which is represented as a vectorgraph by the parameter of parallel parabolas. Experiment results demonstrate the algorithm's effectiveness in extracting main road segments from high-resolution images.

Number of references:23

Database:Compendex

Accession number:20074110859937

Title:Improving precision of autocouimation with cubic spline interpolation functions

Authors:Wu, Wen-Ming (0); Gao, Li-Min (0); Wu, Yi-Ming (0); Wu, Cui-Gang (0); Bai, Jian-Ming (0)

Corresponding author:Wu, W.-M.(zjuoscar@hotmail.com)

Corr. author affiliation:Xi'an Institute of Optics and Precision Mechanics, CAS, Xi'an 710119, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:36

Issue:8

Issue date:August 2007

Publication year:2007

Pages:1561-1564

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, 710068, China

Abstract:Because of the CCD pixel size, the precision of autocollimation is above arcsec level which is far from high level meterage. Cubic Spline Interpolation Functions was used to subdividing CCD pixel, then beeline edge fitting was used to detecting the edge of image to improve the precision of autocollimation. Unaided measurement was used in the experiment, angles from turning autocollimation and calculating was compared, then the precision of arithmetic was analyzed. The precision of autocollimation was obviously improved by using the arithmetic, 0.1 arc second precision was achieved in the result.

Number of references:7

Database:Compendex

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