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2006年

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Accession number:2006139784228

Title:Real-time detection of moving point targets in staring binocular imaging system

Authors:Qu, You-Shan (0); Fan, Xue-Wu (0); Li, Ying-Cai (0); Wen, De-Sheng (0); Tian, Wei-Jian (0)

Corr. author affiliation:Xi 'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi 'an 110068, China

Source title:Guangdian Gongcheng/Opto-Electronic Engineering

Abbreviated source title:Guangdian Gongcheng

Volume:33

Issue:1

Issue date:January 2006

Publication year:2006

Pages:42-45

Language:Chinese

ISSN:1003501X

CODEN:GUGOEC

Document type:Journal article (JA)

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

Abstract:The information quantity passed through the overlapped Field of View (FOV) is larger than that passed through the non-overlapped FOV in staring binocular imaging system, a new parallel high-speed automatic detecting algorithm of moving point targets is established based on this feature. The detecting algorithm uses the Norm of the difference vectors of the processed images sequence as a preprocessing to get rid of most of low-frequency noise and background, then Optic Flow is used to segment the doubtful moving point targets from the images remained after preprocessing, and finally the novel space-time parallel high-speed determining method proposed in this paper is used to determine whether the doubtful moving point are true targets or not. The experiment results show that with the established algorithm, the average determining speed for moving point targets is raised 50% than that of the monocular imaging system, and the correct determining probability is 95% when the SNR of processed images is no less than 3 dB.

Number of references:9

Database:Compendex

Accession number:20070410388868

Title:Fabrication and fluorescence properties of Eu(TTFA) 3-doped PMMA

Authors:Sun, Ting (0); Wang, Yaoxiang (0); Huang, Changqing (0); Tian, Weijian (0); Zhang, Xinglong (0); Liu, Guangwen (0); Zhao, Baoping (0); Huang, Kun (0); Yu, Huixia (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:35

Issue:11

Issue date:November 2006

Publication year:2006

Pages:1721-1724

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, China

Abstract:Eu3+ chelates with thenoyltrifluoroacetylacetone (TTFA), Hexafluoroacetylacetone(HFA) and dibenzoyl -methide (DBM) as the ligands and PMMA doped with these chelates were synthesized, respectively. Fluorescence properties of the chelates Eu(TTFA)3, Eu(HFA)3, Eu(DBM)3 in benzene solution and in PMMA matrix were investigated. It was found that the fluorescence intensity of Eu (TTFA)3 was the topmost. The effect factors on the fluorescence intensity of complexes were analyzed. It was testified that TTFA was a good ligand of Eu3+ for red fluorescence emission. Finally, the dependence of Eu(TTFA)3 doping concentrations (0.08 wt.%-0.5wt.%) on the fluorescence intensity and the fluorescence lifetimes were investigated. The results showed that the fluorescence intensity and the lifetimes increased within the doping concentrations investigated. The fluorescence lifetimes were between 280-400 μs. Such fluorescing PMMA might have extensive prospect of applications in optical devices, such as polymer optical fibers, lasers, amplifiers and waveguides.

Number of references:10

Database:Compendex

Accession number:2006279980414

Title:Research and manufacture of minisize single stage polarization-independent optical isolator

Authors:Zhang, Wen-Song (1); Fang, Qiang (1); Zhao, Wei (1); Yao, Sheng-Li (4)

Author affiliation:(1) State Key Laboratory of Transient Optics Technology, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710068, China; (2) Graduate School, Chinese Academy of Sciences, Xi'an 710068, China; (3) Telecommunications Department, Xi'an Institute of Posts and Telecommunications, Xi'an 710061, China; (4) Femto Technology (Xi'an) Co. Ltd., Xi'an 710119, China

Corresponding author:Zhang, W.-S.(zhangwenson@opt.ac.cn)

Source title:Guangdianzi Jiguang/Journal of Optoelectronics Laser

Abbreviated source title:Guangdianzi Jiguang

Volume:17

Issue:4

Issue date:April 2006

Publication year:2006

Pages:430-433

Language:Chinese

ISSN:10050086

CODEN:GUJIE9

Document type:Journal article (JA)

Publisher:Board of Optronics Lasers

Abstract:A novelty minisize single stage polarization-independent optical isolator is presented. The design of Grin-lenses and birefringence crystals and Faraday rotator of the single stage polarization-independent optical isolator are presented. Manufacture and measurements of this isolator are presented. The measured results show that the insertion loss is 0.5 dB, the minimum isolation is 30 dB and the maximum isolation is 45 dB under the range of λ<inf>0</inf> ± 20 nm, the polarization dependent loss is less than 0.1 dB, the polarization mode dispersion is less than 0.05 ps.

Number of references:8

Main heading:Optical devices

Controlled terms:Birefringence - Dispersions - Lenses - Manufacture - Polarization

Uncontrolled terms:Birefringence crystals - Faraday rotator - Grin lenses - Insertion loss - Maximum isolation - Minisize - Optical isolator - Polarization dependent loss - Polarization independence - Polarization mode dispersion

Classification code:714.1 Electron Tubes - 741.3 Optical Devices and Systems

Treatment:Experimental (EXP)

Database:Compendex

Accession number:2006089718543

Title:Matching of both group-velocity and pulse-front for ultrabroadband three-wave-mixing with noncollinear angularly dispersed geometry

Authors:Liu, H. (1); Zhao, W. (1); Yang, Y. (1); Wang, H. (1); Wang, Y. (1); Chen, G. (1)

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

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

Source title:Applied Physics B: Lasers and Optics

Abbreviated source title:Appl Phys B

Volume:82

Issue:4

Issue date:March 2006

Publication year:2006

Pages:585-594

Language:English

ISSN:09462171

CODEN:APBOEM

Document type:Journal article (JA)

Publisher:Springer Verlag

Abstract:Ultrabroadband three-wave-mixing is analyzed using the concept of pulse-front-tilt, which is achieved by means of angular dispersion. The results show exactly matching of both group-velocity and pulse-front is the important criterion for constructing an ultrabroadband TWM. A theoretical model is developed, in which the group velocities, noncollinear angles, spatial walk-off angles, linear angular spectral dispersion coefficients and pulse-front tilted angles are suitably linked to each other. Expressions for finding ideal phase matching angle, noncollinear angle and linear angular spectral dispersion coefficient are obtained. Specific numerical results are presented for crystals BBO and LBO with type-I noncollinear angularly dispersed geometry. The numerical simulations verify that our model is valid for designing a practicable ultrabroadband parametric process.

Number of references:44

Main heading:Nonlinear optics

Controlled terms:Computer simulation - Crystals - Dispersion (waves) - Laser pulses - Mathematical models

Uncontrolled terms:Angular dispersion - Group velocities - Phase matching - Three-wave-mixing

Classification code:711.1 Electromagnetic Waves in Different Media - 723.5 Computer Applications - 741.1.1 Nonlinear Optics - 744.1 Lasers, General - 921 Mathematics - 933.1 Crystalline Solids

Treatment:Theoretical (THR)

DOI:10.1007/s00340-005-2114-9

Database:Compendex

Accession number:20064010140712

Title:The second dissociation threshold bound levels of hydrogen molecule

Authors:Zhang, Yan-Peng (1); Song, Jian-Ping (1); Gan, Chen-Li (3); Yan, Xiang-An (1); Nie, Zhi-Qiang (1); Jiang, Tong (1); Li, Ling (1); Du, Kai (1); Zhang, Xiang-Chen (1); Lu, Ke-Qing (4); Eyler, E.E. (2)

Author affiliation:(1) Department of Electronic Science and Technology, Xi'An Jiaotong University, Xi'an 710049, China; (2) Department of Physics, University of Connecticut, U-3046, Storrs, CT 06269, United States; (3) Department of Physics, University of Arkansas, Fayetteville, AR 72701, United States; (4) 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.

Source title:Chinese Physics

Abbreviated source title:Chin. Phys.

Volume:15

Issue:10

Issue date:October 1, 2006

Publication year:2006

Pages:2288-2296

Article number:017

Language:English

ISSN:10091963

E-ISSN:17414199

CODEN:CHPHF4

Document type:Journal article (JA)

Publisher:Institute of Physics Publishing

Abstract:The near-threshold highly bound states of all three stable isotopic variants of molecular hydrogen have been studied. Numerous perturbations and unexpected transitions are observed as far as 1 cm-1 just below the second dissociation threshold. This complex structure may arise from a combination of nonadiabatic coupling between B, B′, C electronic states, perturbations due to fine and hyperfine interactions, and strong shape resonances. The perturbed near-threshold states and vibrational continuum exhibit finegrained structure, differing greatly between isotopes because of varying nonadiabatic coupling. © 2006 Chin. Phys. Soc. and IOP Publishing Ltd.

Number of references:11

Main heading:Molecular physics

Controlled terms:Band structure - Dissociation - Electron energy levels - Hydrogen - Perturbation techniques - Resonance

Uncontrolled terms:Bound states - Dissociation threshold - Nonadiabatic coupling

Classification code:802.2 Chemical Reactions - 804 Chemical Products Generally - 921 Mathematics - 931.1 Mechanics - 931.3 Atomic and Molecular Physics - 933 Solid State Physics

Treatment:Theoretical (THR)

DOI:10.1088/1009-1963/15/10/017

Database:Compendex

Accession number:2006179840606

Title:Synthesis and fluorescence properties of Eu(TTFA)3-doped colloidal SiO3 microspheres

Authors:Huang, Changqing (0); Sun, Ting (0); Zhao, Baoping (0); Tian, Weijian (0); Wang, Yaoxiang (0)

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:35

Issue:3

Issue date:March 2006

Publication year:2006

Pages:377-380

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, China

Abstract:Monodisperse, Eu(TTFA)3-doped colloidal SiO2 microspheres with different doping concentrations were synthesized by the modified Stober method. The transmission electron microscope (TEM) and fluorescence spectrometer were employed to characterize the doping particles. It was found that the particles with the spherical morphology and the smooth surfaces had an average diameter of 300 nm and a size polydispersity of 3.5%. Visible luminescence of Eu3+ from Eu(TTFA)3-doped colloidal SiO2 microspheres was observed, with a lifetime of about 290 μs. Furthermore, the effect of doping concentrations (0.5-1.5 wt.%) on the fluorescence intensity and the lifetimes was studied. The results showed that the fluorescence intensity increased with the doping concentrations, there was no obvious luminescence quenching during the processes of being excited, and the luminescence lifetimes were almost invariable while the doping concentrations were changed. Such fluorescence microspheres might have potential in active photonic crystals, microlasers and biological applications.

Number of references:14

Database:Compendex

Accession number:2006289999410

Title:A C- and L-band dual-wavelength erbium-doped fibre laser for assisting four-wave mixing self-stability

Authors:Liu, Xueming (1); Zhao, Wei (1); Liu, Hongjun (1); Zou, Kuaisheng (1); Zhang, Tongyi (1); Lu, Keqing (1); Sun, Chuandong (1); Wang, Yishan (1); Ouyang, Xian (1); Chen, Guofu (1); Hou, Xun (1)

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

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

Source title:Journal of Optics A: Pure and Applied Optics

Abbreviated source title:J Opt A Pure Appl Opt

Volume:8

Issue:6

Issue date:June 1, 2006

Publication year:2006

Pages:601-605

Article number:016

Language:English

ISSN:14644258

E-ISSN:17413567

CODEN:JOAOF8

Document type:Journal article (JA)

Publisher:Institute of Physics Publishing

Abstract:A kind of photonic 'Robin Hood' based on four-wave mixing is proposed and proved to be effective, theoretically and experimentally, in detail. Its applications for L-band dual-wavelength erbium-doped fibre (EDF) laser use are experimentally demonstrated at room temperature. The experimental results show that the conventional EDF cavity only induces a very unstable L-band laser, but the novel Robin Hood can effectively suppress the homogeneous gain in the erbium laser. By using suitable fibre Bragg gratings and stretching them, the proposed EDF laser can operate from &sim;1520 to &sim;1635nm, so our dual-wavelength EDF laser can be used in lasing operation not only for the L band but also for the C band. The outstanding merits of our dual-wavelength laser are the flexible tuning and the ultrabroad spectral range of more than 115nm. The experimental results show that the stability and uniformity of the proposed dual-wavelength laser in C-band operation are better than those for the same laser in L-band operation. © 2006 IOP Publishing Ltd.

Number of references:25

Main heading:Fiber lasers

Controlled terms:Doping (additives) - Erbium - Fiber Bragg gratings - Four wave mixing - Optical waveguides

Uncontrolled terms:Erbium-doped fibre - L band - Ultrabroad spectral range

Classification code:547.2 Rare Earth Metals - 711.1 Electromagnetic Waves in Different Media - 712.1 Semiconducting Materials - 714.3 Waveguides - 741.3 Optical Devices and Systems - 744.4 Solid State Lasers

Treatment:Theoretical (THR)

DOI:10.1088/1464-4258/8/6/016

Database:Compendex

Accession number:2006229912997

Title:Application of mathematical morphology on infrared image of multi-dim-small target

Authors:Hui, Jianjiang (0); Liu, Zhaohui (0); Liu, Wen (0)

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:35

Issue:4

Issue date:April 2006

Publication year:2006

Pages:626-629

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, China

Abstract:Through the top-hat and bottom-hat of mathematical morphology in image enhancement, the targets' cluster was divided into single target by method of watershed. And automatic threshold selection was applied in segmentation of the image. The experiments results supported the method.

Number of references:8

Database:Compendex

Accession number:20083811560018

Title:Optical absorption and nonlinear mixing of near-infrared and terahertz wave in quantum wells

Authors:Zhang, Tong-Yi (1); Zhao, Wei (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precise Mechanics, Chinese Academy of Science, 322 West Youyi Road, Xi'an, 710068, China

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

Source title:IRMMW-THz 2006 - 31st International Conference on Infrared and Millimeter Waves and 14th International Conference on Terahertz Electronics

Abbreviated source title:IRMMW-THz - Int. Conf. Infrared Millimeter Waves Int. Conf. Terahertz Electron.

Monograph title:IRMMW-THz 2006 - 31st International Conference on Infrared and Millimeter Waves and 14th International Conference on Terahertz Electronics

Issue date:2006

Publication year:2006

Pages:560

Article number:4222502

Language:English

ISBN-10:1424404002

ISBN-13:9781424404001

Document type:Conference article (CA)

Conference name:IRMMW-THz 2006 - 31st International Conference on Infrared and Millimeter Waves and 14th International Conference on Terahertz Electronics

Conference date:September 18, 2006 - September 22, 2006

Conference location:Shanghai, China

Conference code:73222

Sponsor:Shanghai Inst. Tech. Phys., Chinese Acad. Sci. (SITP, CAS); Southeast University (SEU); Chinese Academy of Sciences (CAS); National Natural Science Foundation of China; IEEE Microwave Theory and Techniques Society (MTT-S)

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

Abstract:Linear optical absorption and terahertz (THz) sideband generation in quantum wells in the presence of a strong growth-direction oriented THz electric field is investigated. It is shown that the THz field can couple more than two levels simultaneously. The absorption spectra show a rich variety of behavior, including THz replicas of the 2 p exciton and THz sideband of the 1s exciton. The THz electric field results in multiple optical absorption peaks due to resonant coupling between the valence subbands and produces splittings in the generated sidebands. ©2006 IEEE.

Number of references:4

Main heading:Electric generators

Controlled terms:Absorption - Electric field effects - Electric fields - Electromagnetic wave absorption - Electromagnetic waves - Energy absorption - Excitons - Millimeter wave devices - Millimeter waves - Semiconductor quantum wells - Semiconductor quantum wires - Wells

Uncontrolled terms:International conferences - Terahertz electronics

Classification code:931.3 Atomic and Molecular Physics - 931.2 Physical Properties of Gases, Liquids and Solids - 802.3 Chemical Operations - 715 Electronic Equipment, General Purpose and Industrial - 714.2 Semiconductor Devices and Integrated Circuits - 714 Electronic Components and Tubes - 712.1 Semiconducting Materials - 711 Electromagnetic Waves - 705.2 Electric Generators - 701.1 Electricity: Basic Concepts and Phenomena - 512.2 Natural Gas Deposits - 512.1 Petroleum Deposits - 446.1 Water Supply Systems

DOI:10.1109/ICIMW.2006.368768

Database:Compendex

Accession number:20070510397391

Title:Fabrication of sub-micro size PZT array and their ferroelectric properties

Authors:Zhao, Gaoyang (1); Zhang, Weihua (1); Xu, Guomin (1); Deng, Xiaocui (1); Jiang, Bailing (1); Zhao, Wei (2)

Author affiliation:(1) School of Materials Science and Engineering, Xi'an University of Technology, Xi'an 710048, China; (2) Xi'an Institute of Optics and Precision Mechanics, CAS, Xi'an 710048, China

Corresponding author:Zhao, G.(zhaogy@xaut.edu.cn)

Source title:Science in China, Series E: Technological Sciences

Abbreviated source title:Sci China Ser E Technol Sci

Volume:49

Issue:6

Issue date:December 2006

Publication year:2006

Pages:693-700

Language:English

ISSN:10069321

E-ISSN:1862281X

CODEN:SCETFO

Document type:Journal article (JA)

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

Abstract:The photosensitive PZT sols and their gel films were prepared by sol-gel process. Based on the photosensitivity of the PZT gel films, two-dimensional (2D) array of the PZT gel film was fabricated using twice-exposure of double-beam interference on the gel film. PZT gel films coated on ITO/quartz substrate were exposed to an interference fringe of 325 He-Cd laser beams, the substrate was rotated by 90° between the first and second irradiation steps. Island type periodic 2D array structures with a pitch of 1 μm and cell size of about 480 nm × 480 nm × 40 nm were formed after the irradiation, and followed by leaching with organic solvent, and then by heat treatment at 600°C for 15 min. The hysteresis loops of the cell in PZT array were in-situ measured by the online-operation of TF analyzer and atomic force microscope (AFM). The probe can be located on the locked cell of PZT array in the AFM image. The alternating voltage applied to the locked cell is supplied by the TF analyzer through the conductive coating probe, and then the test signal is fed back to the TF analyzer to obtain the hysteresis loop of the locked cell of array in the absence of top electrode. The results show that the sub-micro size PZT arrays prepared in this way are of polarization reversal characteristics with the alternating electric fields, thereby exhibiting obvious ferroelectricity. © Science in China Press 2006.

Number of references:10

Main heading:Sols

Controlled terms:Atomic force microscopy - Ferroelectricity - Laser beam effects - Leaching - Magnetic films - Organic solvents - Photosensitivity - Sol-gels

Uncontrolled terms:Ferroelectric films - Hysteresis loop - Polarization reversal characteristics

Classification code:804.1 Organic Compounds - 804 Chemical Products Generally - 803 Chemical Agents and Basic Industrial Chemicals - 802.3 Chemical Operations - 744.8 Laser Beam Interactions - 741.3 Optical Devices and Systems - 741.1 Light/Optics - 708.4 Magnetic Materials - 701.1 Electricity: Basic Concepts and Phenomena

Treatment:Experimental (EXP)

DOI:10.1007/s11431-006-2034-x

Database:Compendex

Accession number:20064110165651

Title:Microstructure and fluorescence property of silicon fabricated by femtosecond laser

Authors:Men, Hai-Ning (1); Cheng, Guang-Hua (1); Sun, Chuan-Dong (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonic Technology, Xi'an Institute of Optics and Precision Mechanics, Chinese Acad. of Sci., P.O. Box 80, Xi'an 710068, China; (2) Graduate School, Chinese Acad. of Sci., Beijing 100039, China

Corresponding author:Men, H.-N.(snom001@163.com)

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

Abbreviated source title:Qiangjiguang Yu Lizishu

Volume:18

Issue:7

Issue date:July 2006

Publication year:2006

Pages:1081-1084

Language:Chinese

ISSN:10014322

CODEN:QYLIEL

Document type:Journal article (JA)

Publisher:Editorial Office of High Power Laser and Particle Beams

Abstract:The micro-structure surface and fluorescence of silicon slice fabricated by femtosecond laser under the assistant of low consistency sulfuric acid liquor are reported. A 10 mm × 10 mm square region was fabricated from 0.5 mm thick and 26 mm in diameter silicon slice. The absorbency is increased due to the change of the surface microstructure of the silicon. Photoluminescence spectra display a high fluorescence emission at the wavelength from 700 nm to 750 nm, thus show a new and simple method to increase the fluorescence property of silicon.

Number of references:19

Main heading:Silicon

Controlled terms:Crystalline materials - Fluorescence - Laser applications - Microstructure - Photoluminescence - Sulfuric acid - Surfaces

Uncontrolled terms:Crystalline silicon - Femtosecond laser - Fluorescence property - Silicon slice

Classification code:712.1.1 Single Element Semiconducting Materials - 741.1 Light/Optics - 744.9 Laser Applications - 931 Classical Physics; Quantum Theory; Relativity - 933 Solid State Physics

Treatment:Experimental (EXP)

Database:Compendex

Accession number:20064510219557

Title:Research on the frequency response function and bandwidth of Step-index plastic optical fiber

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

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Academia Sinica, 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:6289

Monograph title:Novel Optical Systems Design and Optimization IX

Issue date:2006

Publication year:2006

Article number:62891C

Language:English

ISSN:0277786X

CODEN:PSISDG

ISBN-10:081946368X

ISBN-13:9780819463685

Document type:Conference article (CA)

Conference name:Novel Optical Systems Design and Optimization IX

Conference date:August 15, 2006 - August 16, 2006

Conference location:San Diego, CA, United states

Conference code:68428

Sponsor:SPIE

Publisher:SPIE

Abstract:The Step-index plastic optical fiber(SIPOF) bandwidth calculation model is given. The model includes not only the modal delay but also the attenuation and mode coupling effects, the numerical solution of the power flow equation in Fourier domain which is the main equation in this model is reported. This solution is based on Crank-Nicholson implicit difference method. The frequency response function and bandwidth of four kinds of SIPOFS with different Numerical aperture is researched. The frequency response function and bandwidth under selective excitation is numerically calculated. The results imply that the selective excitation of SIPOF increased effectively the fiber bandwidth. Calculated results are useful for practical application of plastic optical fiber.

Number of references:8

Main heading:Optical fibers

Controlled terms:Attenuation - Bandwidth - Frequency response - Mathematical models - Numerical analysis - Optical systems

Uncontrolled terms:Bandwidth forecast - Frequency response function - Plastic optical fibers

Classification code:703.1 Electric Networks - 711.1 Electromagnetic Waves in Different Media - 716.1 Information Theory and Signal Processing - 741.1.2 Fiber Optics - 741.3 Optical Devices and Systems - 921.6 Numerical Methods

Treatment:Theoretical (THR)

DOI:10.1117/12.682325

Database:Compendex

Accession number:2006199870556

Title:Observation of a fast electron beam emitted along the surface of a target irradiated by intense femtosecond laser pulses

Authors:Li, Y.T. (1); Yuan, X.H. (1); Xu, M.H. (1); Zheng, Z.Y. (1); Sheng, Z.M. (1); Chen, M. (1); Ma, Y.Y. (1); Liang, W.X. (1); Yu, Q.Z. (1); Zhang, Y. (1); Liu, F. (1); Wang, Z.H. (1); Wei, Z.Y. (1); Zhao, W. (2); Jin, Z. (1); Zhang, J. (1)

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

Source title:Physical Review Letters

Abbreviated source title:Phys Rev Lett

Volume:96

Issue:16

Issue date:2006

Publication year:2006

Article number:165003

Language:English

ISSN:00319007

E-ISSN:10797114

CODEN:PRLTAO

Document type:Journal article (JA)

Publisher:American Physical Society

Abstract:A novel fast electron beam emitting along the surface of a target irradiated by intense laser pulses is observed. The beam is found to appear only when the plasma density scale length is small. Numerical simulations reveal that the electron beam is formed due to the confinement of the surface quasistatic electromagnetic fields. The results are of interest for potential applications of fast electron beams and deep understanding of the cone-target physics in the fast ignition related experiments. © 2006 The American Physical Society.

Number of references:29

Main heading:Laser pulses

Controlled terms:Electromagnetic fields - Electron beams - Irradiation - Light emission - Surface phenomena

Uncontrolled terms:Cone-target physics - Electron beam emitting - Intense laser pulses - Surface quasistatic

Classification code:622.2 Radiation Effects - 701 Electricity and Magnetism - 741.1 Light/Optics - 744.1 Lasers, General - 931.3 Atomic and Molecular Physics

Treatment:Theoretical (THR); Experimental (EXP)

DOI:10.1103/PhysRevLett.96.165003

Database:Compendex

Accession number:2006099728350

Title:ZnO thin film photoconductive ultraviolet detector with fast photoresponse

Authors:Xu, Q.A. (1); Zhang, J.W. (1); Ju, K.R. (3); Yang, X.D. (1); Hou, X. (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics Technology, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710068, China; (2) Graduate School, Chinese Academy of Sciences, Beijing 100039, China; (3) Key Laboratory of Photonics Technology for Information, Shaanxi Province, Xi'an Jiaotong University, Xi'an 710049, China; (4) School of Physics and Information Photoelectronics, Henan University, Kaifeng 475000, China

Corresponding author:Xu, Q.A.(lzuxqan@163.com)

Source title:Journal of Crystal Growth

Abbreviated source title:J Cryst Growth

Volume:289

Issue:1

Issue date:March 15, 2006

Publication year:2006

Pages:44-47

Language:English

ISSN:00220248

CODEN:JCRGAE

Document type:Journal article (JA)

Publisher:Elsevier

Abstract:C-axis preferred oriented ZnO thin films were prepared on quartz substrates by RF sputtering. Photoconductive ultraviolet detector with planar interdigital electrodes was fabricated on ZnO thin film by the lift off technique. Linear I-V characteristic was observed under dark or 365 nm UV light illumination and has obvious difference. The photoresponsivity of 365 nm at 5 V bias is 18 A/W. The response time measure set mainly contains KrF excimer laser with the pulse width of 30 ns and the oscillograph with the bandwidth of 200 MHz. The result shows fast photoresponse with a rise time of 100 ns and fall time of 1.5 μs. © 2005 Elsevier B.V. All rights reserved.

Number of references:11

Main heading:Thin films

Controlled terms:Crystal orientation - Photoconducting materials - Quartz - Sputtering - Substrates - Ultraviolet detectors - Ultraviolet radiation - Zinc oxide

Uncontrolled terms:Detector - Photoresponsivity - Radio frequency sputtering - Response time

Classification code:933.1.1 Crystal Lattice - 804.2 Inorganic Compounds - 741.3 Optical Devices and Systems - 741.1 Light/Optics - 714.2 Semiconductor Devices and Integrated Circuits - 712.1 Semiconducting Materials - 708.2 Conducting Materials - 482.2 Minerals - 461 Bioengineering and Biology

Treatment:Theoretical (THR); Experimental (EXP)

DOI:10.1016/j.jcrysgro.2005.11.008

Database:Compendex

Accession number:2006259949787

Title:Study on the hyper-spectral CCD imager non-uniformity correction algorithm

Authors:Xue, Lijun (0); Li, Zitian (0); Li, Changle (0); Ji, Zhongying (0); Cui, Yan (0); Wang, Zhonghou (0)

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:35

Issue:5

Issue date:May 2006

Publication year:2006

Pages:693-696

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, China

Abstract:Based on analyzing the mechanism of the hyper-spectral CCD imager's non-uniformity and several non-uniformity correction algorithms, the method of two-point multi-section for hyper-spectral CCD imager's non-uniformity correction was presented. The two-point multi-section method has higher precision than two-point correction algorithm and has lower operation load than multi-point correction algorithm. The application of the two-point multi-section method to hyper-spectral imager showed that the method has the merits of low operation load, high precision and strong practicability.

Number of references:5

Database:Compendex

Accession number:2006139784355

Title:Screening solitons in biased centrosymmetric photorefractive media

Authors:Li, Jinping (0); Lu, Keqing (0); Zhao, Wei (0); Yang, Yanlong (0); Zhu, Xiangping (0); Guo, Xiaohui (0)

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

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:35

Issue:2

Issue date:February 2006

Publication year:2006

Pages:257-260

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, China

Abstract:The space-charge field with a higher-order nonlinearity in biased centrosymmetric photorefractive media is presented. When the higher-order term can be neglected, this space-charge field is that studied previously in biased centrosymmetric photorefractive media. The nonlinear wave equation with a higher-order nonlinearity is investigated in biased centrosymmetric photorefractive media, which can exhibit bright and dark spatial solitons under appropriate conditions. The nonlinear change in the refractive index in centrosymmetric photorefractive media resulted from the quadratic electro-optic effect, rather than the linear electro-optic effect in noncentrosymmetric media. The stability of these spatial solitons is discussed using beam propagation methods, and it has been found that optical spatial solitons in biased centrosymmetric photorefractive media are stable against small perturbations in amplitude not broken up.

Number of references:12

Database:Compendex

Accession number:20070410388878

Title:Design and study of the dome-screen projector optical system

Authors:Sun, Xin (0); Bai, Jiaguang (0); Wang, Zhonghou (0)

Corresponding author:Sun, X.(cloudwings@opt.ac.cn)

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

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:35

Issue:11

Issue date:November 2006

Publication year:2006

Pages:1766-1769

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, China

Abstract:An optical system of Dome-screen projector which plays important roll in the pilot-training process was proposed. The lens system adopted the Reverse-Telephoto configuration which had an effective focal length of 5.5mm, an F-number of F/4, a field of view of 175°, and a working wavelength in the range of visible spectrum. A discussion about the relationship between the screen radius and the field curve was presented to explain why this system had an advantage in reducing the field curve. A relatively convenient method of choosing the appropriate screen radius was given at the end of the discussion.

Number of references:5

Database:Compendex

Accession number:2006179840628

Title:Maximal PSNR wavelet bi-linear interpolation iterative algorithm in remote sensing image

Authors:Liu, Bo (0); Qu, Youshan (0); Feng, Guilan (0); Yang, Xiufang (0); Xiangli, Bin (0)

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:35

Issue:3

Issue date:March 2006

Publication year:2006

Pages:468-472

Language:English

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, China

Abstract:The variable relationship between the threshold of the extrapolation and its correspondent Peak of the Signal-to-Noise Ratio (PSNR) in the Wavelet Bi-linear Interpolation Algorithm is deeply analyzed. The Maximal PSNR Wavelet Bi-linear Interpolation Iterative Algorithm is proposed. This algorithm can automatically search the optimal extrapolation threshold to improve the resolution of the optical remote sensing image without damaging its original information, which makes the detail information of the processed image more favorable to be observed and analyzed. The experiment results show that the PSNR of the image reconstructed by this algorithm is 5.5 dB and 2.5 dB higher than that of those reconstructed by the Bi-linear Interpolation and the Wavelet Scale-Function Interpolation respectively, and its entropy is 1.3 times of its original image. It is an effect algorithm to improve the spatial resolution and entropy of the Optical Remote Sensing Image.

Number of references:7

Database:Compendex

Accession number:2006229912982

Title:Design of a CCD biochip scanning and analyzing system

Authors:Zhang, Fan (0); Xue, Lijun (0); Li, Zitian (0); Wu, Xiaohua (0)

Corresponding author:Zhang, F.(zhangfan@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:35

Issue:4

Issue date:April 2006

Publication year:2006

Pages:565-568

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, China

Abstract:According to the characters of the protein biochip with immunogold labeling technique, the biochip scanning and analyzing system was designed based on CCD and digital image treatment technology. After presenting the architecture of the whole system, the article introduces the software framework of it. And then, the method of analyzing and processing biochip image is described in detail.

Number of references:8

Database:Compendex

Accession number:20063410083850

Title:A new method to grow high quality GaN film by MOCVD

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

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:55

Issue:7

Issue date:July 2006

Publication year:2006

Pages:3606-3610

Language:Chinese

ISSN:10003290

CODEN:WLHPAR

Document type:Journal article (JA)

Publisher:Science Press, Beijing, China

Abstract:Patterned c-plane sapphire substrate is prepared by chemical etching. GaN films are grown by LP-MOCVD on surface treated sapphire substrate and common c-plane sapphire substrate. The structure and properties of the GaN films are analyzed by high-resolution double crystal X-ray diffraction (DCXRD), scanning electron microscope (SEM) and atomic force microscope (AFM). The results indicate that the quality of GaN film grown on sapphire substrate prepared by surface treatment is superior to that grown on common c-plane sapphire substrate. High-resolution double crystal X-ray diffraction shows that for the GaN grown on surface treated sapphire substrate, the (0002) and (101 over-bar 2) reflections have full-width at half-maximum as low as 208.80 arcsec and 320.76 arcsec, respectively. The shortcomings of procedure complexity and high crystallographic tilt in conventional lateral epitaxial overgrowth are overcome by using the new method.

Number of references:8

Database:Compendex

Accession number:20063210056376

Title:Three-dimensional optical storage in a PMMA polymer doped with Ce3+

Authors:Xing, Hui (1); Tang, Huohong (1); Jiang, Bing (1); Cai, Jianwen (1); Cheng, Guanghua (2); Liu, Qing (2); Huang, Wenhao (1); Xia, Andong (1)

Author affiliation:(1) Department of Precision Machinery and Precision Instrumentation, University of Science and Technology of China, Hefei 230026, China; (2) State Key Laboratory of Transient Optics and Technology, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710068, China; (3) State Key Laboratory of Molecular Reaction Dynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100800, China

Corresponding author:Xing, H.(xinghui@mail.ustc.edu.cn)

Source title:Guangxue Xuebao/Acta Optica Sinica

Abbreviated source title:Guangxue Xuebao

Volume:26

Issue:6

Issue date:June 2006

Publication year:2006

Pages:874-877

Language:Chinese

ISSN:02532239

CODEN:GUXUDC

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:The writing of multi-layered data bits inside a PMMA block doped with rare-earth ions Ce3+ excited by a 800 nm femtosecond (200 fs, 1 kHz, 800 nm) pulsed laser, and the measurement and discussion of absorption spectra and electron spin resonance spectra before and after femtosecond laser irradiation are reported. The results indicate that the block has a low writing energy threshold, and it's propitious to high speed and parallel three-dimensional data storage. Experimental results of three-dimensional recording and reading with 4 μm in-plane pit spacing and 16 μm inter-plane spacing in four layers are presented using a conventional microscope. The relation between the size of the microexplosion pit and the laser pulse energy is discussed. For high storage density, smaller pulse energy is preferable while keeping enough grey value. It's proved that this material can be used in three-dimensional data storage.

Number of references:13

Main heading:Optical data storage

Controlled terms:Absorption spectroscopy - Irradiation - Laser pulses - Multilayers - Paramagnetic resonance - Polymers - Rare earth additions - Recording - Three dimensional

Uncontrolled terms:Electron spin resonance spectra - Femtosecond pulse - Grey value - Microexplosion - Multiphoton absorption - PMMA block - Pulse energy - Three dimensional data storage - Writing energy threshold

Classification code:815.1 Polymeric Materials - 744.1 Lasers, General - 741.3 Optical Devices and Systems - 741.1 Light/Optics - 722.1 Data Storage, Equipment and Techniques - 701.2 Magnetism: Basic Concepts and Phenomena - 547.2 Rare Earth Metals

Treatment:Experimental (EXP)

Database:Compendex

Accession number:20064210187832

Title:Study on fiber Bragg grating pressure sensor of high sensitivity based on chemical bonding between polymer and FBG

Authors:Wei, Ting (0); Qiao, Xueguang (0); Wang, Hongliang (0)

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

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:35

Issue:8

Issue date:August 2006

Publication year:2006

Pages:1199-1202

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, China

Abstract:A new approach for packed FBG (fiber Bragg grating) pressure sensor using chemical bonding technics between polymer and FBG was proposed and demonstrated. A kind of chemical bonding material was used to strengthen the bonding between fiber and polymer in order to improve the pressure response of FBG sensor. This technics resolved the problem of avulsion in high pressure due to the big difference elastic modulus between polymer and fiber. The experimental result indicated that, within 0.04 MPa~0.6 MPa, the pressure response sensitivity was -4. 48 nm / MPa and the resolution pressure measurement was ±0. 01 MPa, which is 1463 times higher than that of the bare FBG. The linearity of the temperature response curves is 0. 9978. Reflection spectrum showed a steady figure through repeated measurement.

Number of references:8

Database:Compendex

Accession number:20063810126069

Title:Research on the measurement of bubble velocity based on cross-correlation algorithm

Authors:Chen, Min (1); He, Junhua (1); Chen, Liangyi (1)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, CAS, Xi'an 710068; (2) Graduate School, Chinese Academy of Sciences, Beijing 100039

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

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

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:6344 II

Monograph title:Advanced Laser Technologies 2005

Issue date:2006

Publication year:2006

Article number:634432

Language:English

ISSN:0277786X

CODEN:PSISDG

ISBN-10:0819464201

ISBN-13:9780819464200

Document type:Conference article (CA)

Conference name:Advanced Laser Technologies 2005

Conference date:September 3, 2005 - September 6, 2005

Conference location:Tianjin, China

Conference code:68108

Sponsor:SPIE Russia Chapter; Ministry of Education, Engineering Division, China; Tianjin University, Science Technology Garden, China; The Chinese Optical Society, China; China Instrument and Control Society, China

Publisher:SPIE

Abstract:Cross-correlation algorithm is based on information theory and stochastic process theory. It has been widely used in many research fields, such as, medical ultrasound, ocean engineering, signal detection, modal parameters under ambient excitation, etc., but its applications in research of bubble curtains are seldom seen in domestic released periodicals, so our work is attempting to use cross-correlation algorithm. Through computing the velocity vector of bubble curtains, the bubble movement character can be known, i.e. the details of the bubble curtains can also be known. After comparing the differences between it and Doppler method, the cross-correlation algorithm has been applied to the measurement of bubble curtains parameters from a new aspect. The He-Ne laser and high-speed CCD camera are used to acquire the images of dancing bubbles, the velocities of bubbles are computed from image post-processed. Through improving conventional cross-correlation algorithm commonly used for analysis of flow field, the Fast Fourier Transform (FFT) has been used to implement the cross-correlation algorithm rapidly. In order to enhance the computing accuracy, Gaussian eurve fitting is used to modify the correlation peak location and the fitting equations are listed, so the bubbles displacement with subpixel accuracy is obtained. Noises are stochastically added from hardware when acquiring images and the cross-correlation algorithm may also introduce errors. The character of velocity vectors result can be entirely wrong with ambient vectors, so they must be corrected. In order to calibrate the cross-correlation algorithm, images with universal displacement are used to validate its feasibility and reliability. The algorithm is applied to the computation of parameters in bubble curtains, yielding the vector graph of bubble motion. The algorithm is expected to be a valuable tool in acquiring the real-time velocity information in bubble curtains.

Number of references:6

Main heading:Optical correlation

Controlled terms:Algorithms - Cameras - Charge coupled devices - Fast Fourier transforms - Ocean engineering - Random processes - Research and development management - Signal detection - Velocity measurement

Uncontrolled terms:Bubble curtains - Cross-correlation - Universal displacement

Classification code:943.3 Special Purpose Instruments - 922.1 Probability Theory - 921.3 Mathematical Transformations - 912.2 Management - 901.3 Engineering Research - 742.2 Photographic Equipment - 741.1 Light/Optics - 723 Computer Software, Data Handling and Applications - 716.1 Information Theory and Signal Processing - 714.2 Semiconductor Devices and Integrated Circuits - 472 Ocean Engineering

Treatment:Theoretical (THR)

DOI:10.1117/12.694435

Database:Compendex

Accession number:2006159812710

Title:Passive depolariser based on artificial polarisation-dependent delay

Authors:Liu, J. (1); Fang, Q. (2); Yin, Y. (2); Liang, M. (2)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710068, China; (2) Department of Electronic and Information Engineering, Xi'an Institute of Post and Telecom, Xi'an 710068, China

Corresponding author:Liu, J.(ljh_ong@sina.com.cn)

Source title:Electronics Letters

Abbreviated source title:Electron. Lett.

Volume:42

Issue:7

Issue date:March 30, 2006

Publication year:2006

Pages:412-413

Language:English

ISSN:00135194

CODEN:ELLEAK

Document type:Journal article (JA)

Publisher:Institution of Engineering and Technology

Abstract:A passive depolariser based on artificial polarisation-dependent delay is demonstrated. Experimental results show that a low degree of polarisation (<2%) and a low polarisation-dependent loss (0.08 dB) are obtained for any input state of polarisation.

Number of references:7

Main heading:Polarization

Controlled terms:Delay circuits - Electric potential - Passive networks - Threshold voltage

Uncontrolled terms:Artificial polarization-dependent delays - Low degree of polarization - Passive depolariser

Classification code:701.1 Electricity: Basic Concepts and Phenomena - 703.1 Electric Networks - 711.1 Electromagnetic Waves in Different Media - 713.5 Electronic Circuits Other Than Amplifiers, Oscillators, Modulators, Limiters, Discriminators or Mixers - 714.2 Semiconductor Devices and Integrated Circuits

Treatment:Theoretical (THR); Experimental (EXP)

DOI:10.1049/el:20060010

Database:Compendex

Accession number:2006209874845

Title:Study of a new portable X-ray source with micro-beam

Authors:Wang, Kaige (1); Li, Ji (1); Yang, Qinlao (1); Guo, Jinchuan (1); Guo, Baoping (1); Kuo, Xiaomei (1); Zhou, Junlan (1); Niu, Hanben (1)

Author affiliation:(1) Institute of Optoelectronics, Shenzhen University, Shenzhen, 518060, China; (2) Xi'an Institute of Optics and Precision Mechanics, CAS, Xi'an 710068, China

Corresponding author:Wang, K.(kaigewang@126.com)

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

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:6149

Volume title:2nd International Symposium on Advanced Optical Manufacturing and Testing Technologies - Advanced Optical Manufacturing and Testing Technologies

Issue date:2006

Publication year:2006

Article number:61491Z

Language:English

ISSN:0277786X

CODEN:PSISDG

ISBN-10:0819461881

ISBN-13:9780819461889

Document type:Conference article (CA)

Conference name:2nd International Symposium on Advanced Optical Manufacturing and Testing Technologies - Advanced Optical Manufacturing and Testing Technologies

Conference date:November 2, 2005 - November 5, 2005

Conference location:Xian, China

Conference code:67254

Sponsor:Chinese Optical Society, COS, China; The Institute of Optics and Electronics, CAS, China; SPIE

Publisher:SPIE

Abstract:A novel X-ray source with micro-beam has been studied in theory and experiment. The source is composed of three portions: LaB<inf>6</inf> crystal cathode electron gun emitting system, electrostatic focusing system, and permutable metal target system. The electronic current emitted by the electron-gun are controlled by modulating cathode temperature and Wehnelt grid voltage and ratio D<inf>w</inf>/H, two-equal-radius-cylinder-electrodes focusing system concentrates electron beam, the X-ray photons are irradiated by high energy electron beam bombarding the metal target. The new x-ray source's general-purpose capabilities such as continuous radiation and pulse radiation, focus size and luminance, are also tested. When the temperature of LaB <inf>6</inf> cathode is about 1900K and partial pressures being kept below 10-7 torr, the minimal focus diameter is merely about 10 microns. The new micro focus x-ray source has other lots of advantages such as economy, safety and facility.

Number of references:7

Main heading:X ray analysis

Controlled terms:Cathodes - Electron beams - Electron emission - Electron guns - Electrostatics - Ion bombardment - Lanthanum compounds

Uncontrolled terms:Electrostatic focusing system - High brightness - LaB<inf>6</inf> cathode electron-gun emitting system - Monte-Carlo simulation - X-ray source with micron beam

Classification code:932.1 High Energy Physics - 931.3 Atomic and Molecular Physics - 804.2 Inorganic Compounds - 714.1 Electron Tubes - 704.1 Electric Components - 701.1 Electricity: Basic Concepts and Phenomena - 421 Strength of Building Materials; Mechanical Properties

Treatment:Theoretical (THR); Experimental (EXP)

DOI:10.1117/12.674261

Database:Compendex

Accession number:2006209878526

Title:Precise processing of transparent material with femtosecond laser pulses

Authors:Ma, Lin (1); Shi, Shunxiang (1); Cheng, Guanghua (2); Zhao, Wei (2); Chen, Guofu (2)

Author affiliation:(1) Lab 501, School of Technical Physics, Xidian University, Xi an 710071, China; (2) State Key Laboratory of Transient Optics and Technology, Xi' an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710068, China

Corresponding author:Ma, L.(ml-mary@sohu.com)

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

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:6149

Volume title:2nd International Symposium on Advanced Optical Manufacturing and Testing Technologies - Advanced Optical Manufacturing and Testing Technologies

Issue date:2006

Publication year:2006

Article number:614935

Language:English

ISSN:0277786X

CODEN:PSISDG

ISBN-10:0819461881

ISBN-13:9780819461889

Document type:Conference article (CA)

Conference name:2nd International Symposium on Advanced Optical Manufacturing and Testing Technologies - Advanced Optical Manufacturing and Testing Technologies

Conference date:November 2, 2005 - November 5, 2005

Conference location:Xian, China

Conference code:67254

Sponsor:Chinese Optical Society, COS, China; The Institute of Optics and Electronics, CAS, China; SPIE

Publisher:SPIE

Abstract:Based on the physical mechanisms of femtosecond laser-transparent materials interactions, three kinds of micromachining including three dimensional data storage, optical waveguide network and grating with an amplified Ti:sapphire laser system are presented. These optical devices on different transparent materials by femtosecond pulses are featured. The effect of laser machined parameters such as irradiated energy, the scanning speed and the recording material upon fabricated optical devices is studied in detail. From examples, the versatility of femtosecond laser precise micromachining technique is demonstrated. Practical application of femtosecond laser materials processing is illuminated.

Number of references:16

Main heading:Laser pulses

Controlled terms:Data storage equipment - Diffraction gratings - Micromachining - Optical waveguides - Transparency

Uncontrolled terms:Femtosecond laser pulse - Laser precise processing - Ti:sapphire laser system - Transparent materials

Classification code:604.2 Machining Operations - 714.3 Waveguides - 722.1 Data Storage, Equipment and Techniques - 741.1 Light/Optics - 741.3 Optical Devices and Systems - 744.1 Lasers, General

Treatment:Theoretical (THR)

DOI:10.1117/12.674323

Database:Compendex

Accession number:20064210187838

Title:Experimental study on dark photovoltaic solitons

Authors:Li, Jinping (0); Lu, Keqing (0); Zhao, Wei (0); Yang, Yanlong (0); Zhu, Xiangping (0); Guo, Xiaohui (0); Song, Jianping (0); Zhang, Yanpeng (0)

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

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:35

Issue:8

Issue date:August 2006

Publication year:2006

Pages:1225-1228

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, China

Abstract:Spatially partially incoherent and coherent dark photovoltaic solitons are comprehensively experimentally studied with phase masks in LiNbO3 : Fe crystals. One-dimension and two-dimension dark photovoltaic solitons are observed with spatially partially incoherent and coherent beam, which result from the bulk photovoltaic effect and when diffraction is exactly balanced by photorefractive self-defocusing. The analysis of theory and experiments shows that dark photovoltaic solitons depend on the direction of propagation, orientation of the intensity gradient, with respect to the crystalline axes of the medium. Under certain conditions, the steady-state spatially partially incoherent dark photovoltaic solitons can be observed.

Number of references:14

Database:Compendex

Accession number:20082811356003

Title:Goos-hänchen-like displacement of light beams transmitting through periodical multiple layered structures

Authors:Zhu, Qi-Biao (1); Li, Chun-Fang (1); Chen, Xi (1)

Author affiliation:(1) Department of Physics, Shanghai University, Shanghai 200444, China; (2) State Key Laboratory of Transient Optics Technology, Xi'an Institute of Optics and Precision Mechanics, Academia Sinica, Xi'an 710068, China

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

Source title:Proceedings of International Symposium on Biophotonics, Nanophotonics and Metamaterials, Metamaterials 2006

Abbreviated source title:Proc. Int. Symp. Biophotonics, Nanophotonics Metamaterials

Monograph title:Proceedings of International Symposium on Biophotonics, Nanophotonics and Metamaterials, Metamaterials 2006

Issue date:2006

Publication year:2006

Pages:384-387

Article number:4134828

Language:English

ISBN-10:0780397746

ISBN-13:9780780397743

Document type:Conference article (CA)

Conference name:International Symposium on Biophotonics, Nanophotonics and Metamaterials, Metamaterials 2006

Conference date:October 16, 2006 - October 18, 2006

Conference location:Hangzhou, China

Conference code:72399

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

Abstract:It is investigated that the Goos-Ha&die;nchen-like displacement of light beams transmitting through periodical multiple-layered structures can be negative as well as positive. The numerical simulations for Gaussian-shaped beam are made to demonstrate the validity of the stationary phase approach. © 2006 IEEE.

Number of references:28

Main heading:Gaussian beams

Controlled terms:Chromatographic analysis - Computer simulation - Electromagnetic field theory - Electromagnetic fields - Electromagnetism - Magnetism - Materials science - Photonics

Uncontrolled terms:Bio photonics - gaussian - International symposium - Layered structured - light beams - Metamaterials (MTM) - Nano-photonics - Numerical simulations - Shaped beams - Stationary phase approach

Classification code:951 Materials Science - 801 Chemistry - 741.1 Light/Optics - 723.5 Computer Applications - 711 Electromagnetic Waves - 701.2 Magnetism: Basic Concepts and Phenomena - 701 Electricity and Magnetism

DOI:10.1109/METAMAT.2006.334923

Database:Compendex

Accession number:2006059670366

Title:Spatial evolution of multiple filaments in air induced by femtosecond laser pulses

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

Author affiliation:(1) Key Laboratory of Optical Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100080, 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:Hao, Z.-Q.

Source title:Optics Express

Abbreviated source title:Opt. Express

Volume:14

Issue:2

Issue date:January 23, 2006

Publication year:2006

Pages:773-778

Language:English

ISSN:10944087

E-ISSN:10944087

Document type:Conference article (CA)

Publisher:Optical Society of America

Abstract:The spatial evolution of plasma filaments in air induced by femtosecond laser pulses is investigated experimentally. Several major filaments and small scaled additional filaments are detected in the plasma channel. The complicated interaction process of filaments as splitting, fusion and spreading is observed. The major filaments propagate stably, and the small scaled additional filaments can be attracted to the major filaments and merged with them. The major filaments are formed due to the perturbation of initial beam profile and the small scaled filaments are mainly caused by the transverse modulational instability. © 2006 Optical Society of America.

Number of references:31

Main heading:Laser pulses

Controlled terms:Fusion reactions - Laser beams - Perturbation techniques - Plasma devices

Uncontrolled terms:Femtosecond laser pulses - Initial beam profile - Interaction process - Transverse modulational instability

Classification code:744.1 Lasers, General - 744.8 Laser Beam Interactions - 932.2.1 Fission and Fusion Reactions - 932.3 Plasma Physics

Treatment:Theoretical (THR); Experimental (EXP)

DOI:10.1364/OPEX.14.000773

Database:Compendex

Accession number:20064210187821

Title:Ultra-rapid-scanning imaging interferometer

Authors:Zhang, Wenxi (0); Xiangli, Bin (0); Yuan, Yan (0); Tao, Ran (0); Du, Shusong (0); Chen, Xi (0); Su, Lijuan (0)

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:35

Issue:8

Issue date:August 2006

Publication year:2006

Pages:1153-1155

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, China

Abstract:The principle of ultra-rapid-scanning Interferometer is introduced and a new kind of ultra-rapid-scanning imaging interferometer based on the principle is provided. The imaging interferometer has a wider angle of field and higher scan efficiency. The character of the imaging interferometer is that it has a rotating planner reflector with an angle of inclination instead of the straight-line planner reflector in Michelson interferometer. The questions of lower scan efficiency and instability are well solved in Michelson interferometer.

Number of references:6

Database:Compendex

Accession number:2006209874839

Title:Study of the optical properties of ZnO thin films prepared by laser molecular beam epitaxy

Authors:Zhongfeng, Xu (1); Kairu, Ju (1); Qing'an, Xu (2)

Author affiliation:(1) School of Science, Xi'an Jiaotong University, Xi'an, 710049, China; (2) Xi'an Institute of Optics and Precision Mechanics, Xi'an, 710068, China

Corresponding author:Zhongfeng, X.(zhfxu@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:6149

Volume title:2nd International Symposium on Advanced Optical Manufacturing and Testing Technologies - Advanced Optical Manufacturing and Testing Technologies

Issue date:2006

Publication year:2006

Article number:61491T

Language:English

ISSN:0277786X

CODEN:PSISDG

ISBN-10:0819461881

ISBN-13:9780819461889

Document type:Conference article (CA)

Conference name:2nd International Symposium on Advanced Optical Manufacturing and Testing Technologies - Advanced Optical Manufacturing and Testing Technologies

Conference date:November 2, 2005 - November 5, 2005

Conference location:Xian, China

Conference code:67254

Sponsor:Chinese Optical Society, COS, China; The Institute of Optics and Electronics, CAS, China; SPIE

Publisher:SPIE

Abstract:ZnO thin films are prepared on sapphire (0001) substrate by laser molecular beam epitaxy (L-MBE) and the optical properties were studied. It is found that the growth conditions and the treat process have obvious effect on the optical properties of ZnO films. With the increase of the growth oxygen pressure, the concentration of the structural defects in ZnO films caused by the disbalance of Zn and O stoichiometric proportion is depressed effectively. As a result, the UV emission intensity grows much higher, but the deep level (DL) emission is depressed. Sample 1#, 2#, and 3# were grown at oxygen pressure 2.0E-3Pa, 8.0E-3Pa, 2.0E-2Pa respectively, and the ratio of the UV emission intensity and the DL emission intensity were 1.00, 2.34, 3.31 respectively. The effect of annealing treatment on the transmission spectra of ZnO films was also studied. Sample 1# was cut into three parts and annealed at 500°C, 600°C, 700°C respectively in the air atmosphere. The transmittivity in the visible range become much greater after annealing and the higher the annealing temperature is, the higher the transmittivity becomes. When annealed at 700°C, the transmittivity has nearly doubled.

Number of references:8

Main heading:Thin films

Controlled terms:Annealing - Concentration (process) - Molecular beam epitaxy - Optical properties - Sapphire - Stoichiometry - Zinc oxide

Uncontrolled terms:Annealing treatment - L-MBE - Oxygen pressure - Transmission spectrum - ZnO thin film

Classification code:933.1.2 Crystal Growth - 931.3 Atomic and Molecular Physics - 804.2 Inorganic Compounds - 802.3 Chemical Operations - 801.4 Physical Chemistry - 741.1 Light/Optics - 714.2 Semiconductor Devices and Integrated Circuits - 537.1 Heat Treatment Processes - 482.2.1 Gems

Treatment:Theoretical (THR); Experimental (EXP)

DOI:10.1117/12.674255

Database:Compendex

Accession number:20083811559738

Title:Coherent radiation of picosecond ultra-short electromagnetic pulse radiated by antenna arrays

Authors:Ruan, Chi (1); Zhao, Wei (1); Chen, Guofu (1); Zhu, Shaolan (1); Liu, Baiyu (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, 324 YouYiXiLu Road, Xi'an, Shaanxi, 710068, China

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

Source title:IRMMW-THz 2006 - 31st International Conference on Infrared and Millimeter Waves and 14th International Conference on Terahertz Electronics

Abbreviated source title:IRMMW-THz - Int. Conf. Infrared Millimeter Waves Int. Conf. Terahertz Electron.

Monograph title:IRMMW-THz 2006 - 31st International Conference on Infrared and Millimeter Waves and 14th International Conference on Terahertz Electronics

Issue date:2006

Publication year:2006

Pages:267

Article number:4222209

Language:English

ISBN-10:1424404002

ISBN-13:9781424404001

Document type:Conference article (CA)

Conference name:IRMMW-THz 2006 - 31st International Conference on Infrared and Millimeter Waves and 14th International Conference on Terahertz Electronics

Conference date:September 18, 2006 - September 22, 2006

Conference location:Shanghai, China

Conference code:73222

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

Abstract:The experiments are setup to study the picoseceond ultra-short pulses coherent radiation characteristic. The transmitting and receiving antenna employ the tie horn antennas.16 channels electrical pulses with 300ps duration and jitter less than 50ps are used. The different frame of 4xl, 4x2, 4x3, 4x4 antenna array radiate the pulses. The receiving antenna measures the electrical field in different distance to the transmitting antennas array. The results show that if the pulses are in coherent condition, the output pulse peak power of antennas array with N elements are N2 of the single element antenna output. ©2006 IEEE.

Number of references:3

Main heading:Antennas

Controlled terms:Antenna arrays - Electromagnetic pulse - Electromagnetic waves - Jitter - Millimeter wave devices - Millimeter waves - Nuclear explosions - Receiving antennas

Uncontrolled terms:Antenna array - Coherent - International conferences - Ultra-short pulse

Classification code:932.2 Nuclear Physics - 914.1 Accidents and Accident Prevention - 722.3 Data Communication, Equipment and Techniques - 718 Telephone Systems and Related Technologies; Line Communications - 717 Optical Communication - 716 Telecommunication; Radar, Radio and Television - 715 Electronic Equipment, General Purpose and Industrial - 714 Electronic Components and Tubes - 711 Electromagnetic Waves - 701 Electricity and Magnetism - 622.3 Radioactive Material Applications - 621 Nuclear Reactors - 404 Civil Defense and Military Engineering

DOI:10.1109/ICIMW.2006.368475

Database:Compendex

Accession number:20063810126045

Title:Sensitization of Eu3+ emission in SiO<inf>4</inf> spheres doped with rare earth complex

Authors:Huang, Changqing (1); Sun, Ting (1); Zhao, Baoping (1); Tian, Weijian (1)

Author affiliation:(1) Laboratory of Information and Photonics, Xi'an Institute of Optics and Precision Mechanics, Xi'an 710068, China; (2) Graduate School, Chinese Academy of Sciences, Beijing 100039, China

Corresponding author:Huang, C.(cqhuang@opt.ac.cn)

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

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:6344 II

Monograph title:Advanced Laser Technologies 2005

Issue date:2006

Publication year:2006

Article number:63442D

Language:English

ISSN:0277786X

CODEN:PSISDG

ISBN-10:0819464201

ISBN-13:9780819464200

Document type:Conference article (CA)

Conference name:Advanced Laser Technologies 2005

Conference date:September 3, 2005 - September 6, 2005

Conference location:Tianjin, China

Conference code:68108

Publisher:SPIE

Abstract:Silica spheres doped with Eu(TTFA)<inf>3</inf> and/or Sm(TTFA)<inf>3</inf> are successfully synthesized by using the modified Sto&die;ber method (the base-catalyzed method). Transmission electron microscope (TEM) shows that the hybrid particles have spherical morphology and an average diameter of about 210 nm. Energy dispersive spectroscopy (EDS) confirms that the rare-earth (RE) complexes are incorporated into the hybrid spheres. The particles consist of 4-fold siloxane rings as determined by Fourier transform infrared spectroscopy (FTIR), For the samples doped with Eu(TTFA)<inf>3</inf> or Sm(TTFA)<inf>3</inf>, the typical fluorescence spectra of Eu3+ or Sm3+ emisssions are detected, respectively. However, for the samples co-doped with Eu(TTFA)<inf>3</inf> and Sm(TTFA)<inf>3</inf>, photoluminescence (PL) shows the absence of Sm3+ emission and reveals the obvious energy transfer from Sm3+ ions to Eu3+ ions. Note that there are energy transfer processes between the ligands and Eu3+ or Sm3+. Therefore, multiple energy transfer processes are achieved within the hybrid spheres. These energy transfer processes maximize the possible fluorescence emission of Eu3+ ion. The lifetimes of the hybrid spheres are also measured. The RE complex/SiO<inf>2</inf> hybrid spheres described in this paper may find promising applications in optical devices and materials science.

Number of references:16

Main heading:Silica

Controlled terms:Doping (additives) - Energy dispersive spectroscopy - Energy transfer - Fourier transform infrared spectroscopy - Photoluminescence - Rare earth compounds - Transmission electron microscopy

Uncontrolled terms:Co-doped - Rare earth complex - Sensitization

Classification code:525.4 Energy Losses (industrial and residential) - 712.1 Semiconducting Materials - 741.1 Light/Optics - 741.3 Optical Devices and Systems - 801 Chemistry - 804.2 Inorganic Compounds

Treatment:Theoretical (THR)

DOI:10.1117/12.694425

Database:Compendex

Accession number:2006069683530

Title:Experimental observation of negative lateral displacements of microwave beams transmitting through dielectric slabs

Authors:Li, C.-F. (1); Zhu, Q.-B. (1); Nimtz, G. (1); Chen, X. (1); Zhang, Y. (1)

Author affiliation:(1) Department of Physics, Shanghai University, 99 Shangda Road, Shanghai 200444, China; (2) State Key Laboratory of Transient Optics Technology, Xi'an Institute of Optics and Precision Mechanics, Academia Sinica, 322 West Youyi Road, Xi'an 710068, China; (3) II. Physikalisches Institut, Universität zu Köln, Zülpicher Strasse 77, D-50937 Köln, Germany

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

Source title:Optics Communications

Abbreviated source title:Opt Commun

Volume:259

Issue:2

Issue date:March 15, 2006

Publication year:2006

Pages:470-473

Language:English

ISSN:00304018

CODEN:OPCOB8

Document type:Journal article (JA)

Publisher:Elsevier

Abstract:It was theoretically predicted that when a beam of light travels through a thin slab of optically denser medium in the air, the emerging beam from the slab will suffer a lateral displacement that is different from the prediction of geometrical optics, that is, the Snell's law of refraction and can be zero and negative as well as positive. These phenomena have been directly observed in microwave experiments in which large angles of incidence are chosen for the purpose of obtaining negative lateral displacements. © 2005 Elsevier B.V. All rights reserved.

Number of references:12

Main heading:Laser beams

Controlled terms:Dielectric amplifiers - Geometrical optics - Light transmission - Microwave amplifiers - Optical engineering - Refraction - Theorem proving

Uncontrolled terms:Microwave experiments - Negative lateral displacements - Snell's law - Thin slab of optically denser medium

Classification code:713.1 Amplifiers - 721.1 Computer Theory, Includes Formal Logic, Automata Theory, Switching Theory, Programming Theory - 741.1 Light/Optics - 744.8 Laser Beam Interactions

Treatment:Theoretical (THR); Experimental (EXP)

DOI:10.1016/j.optcom.2005.09.031

Database:Compendex

Accession number:20064610240477

Title:Design of a Multi-slit Streak lube

Authors:Chen, Min (0); Zhao, Baosheng (0); Sheng, Lizhi (0); Tian, Jinshou (0)

Corresponding author:Chen, M.

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:35

Issue:9

Issue date:September 2006

Publication year:2006

Pages:1309-1312

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, China

Abstract:A new type of multi-slit streak tube was designed with large efficient area, smaller bulk and lighter weight. By programming and Monte-Carlo simulation, even 10 mm off the axis, the spatial resolution can reach to 20 lp/mm, and the static physical temporal resolution can reach to 100 ps. On the basic of theoretical design, some processes were made such as the structural design, machining and assembly. A MS-Streak tube was manufactured. Its efficient photocathode area can reach φ22 mm. After testing with static experiment system set up, a static image with certain spatial resolution was obtained.

Number of references:7

Database:Compendex

Accession number:20064110165381

Title:Efficient spatial visual retrieval algorithm on magnanimous remote sensing raster image data base

Authors:Li, Feng (1); Fu, Kun (2); You, Hong-Jian (2); Wu, Yi-Rong (2); Liu, Bo (4)

Author affiliation:(1) Institute of Electronics, CAS, Beijing 100080, China; (2) Xi'an Institute of Optics and Precision Mechanics, CAS, Xi'an 710068, China; (3) Graduate School, Chinese Academy of Sciences, Beijing 100039, China; (4) Bureau of High-Technol. Research and Development, CAS, Beijing 100864, China

Corresponding author:Li, F.

Source title:Dianzi Yu Xinxi Xuebao/Journal of Electronics and Information Technology

Abbreviated source title:Dianzi Yu Xinxi Xuebao

Volume:28

Issue:8

Issue date:August 2006

Publication year:2006

Pages:1463-1467

Language:Chinese

ISSN:10095896

CODEN:DKXUEC

Document type:Journal article (JA)

Publisher:Science Press

Abstract:It is inefficient to visually retrieve image on magnanimous remote sensing raster image data base by some GIS spatial query interface. An efficient spatial visual retrieval algorithm aimed at directly storage procedure of Relational Data Base Management System (RDBMS) is described and optimized on performance on many levels in this paper after the character of magnanimous remote sensing raster image database spatial visual retrieval is studied in depth. This algorithm is implemented in a real application environment of magnanimous remote sensing raster image data base based on the spatial polygon query, ellipse query and line through query. The results of experiment demonstrate that this algorithm is stable and adaptable.

Number of references:7

Main heading:Database systems

Controlled terms:Geographic information systems - Global positioning system - Optimization - Remote sensing

Uncontrolled terms:Ellipse query - Image data base - Line through query - Query optimization - Raster - Relational data base management system (RDBMS) - Spatial access method (SAM) - Spatial query - Stored procedures - Visual retrieval

Classification code:716.3 Radio Systems and Equipment - 723.3 Database Systems - 731.1 Control Systems - 921.5 Optimization Techniques

Treatment:Applications (APP)

Database:Compendex

Accession number:20064510218759

Title:Design of the infrared switch-zoom optical system

Authors:Li, Gang (1); Zhang, Heng-Jin (1)

Author affiliation:(1) Dynamic Target Measure and Control Laboratory, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710068, China

Corresponding author:Li, G.(lg.lee@163.com)

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

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

Volume:35

Issue:4

Issue date:August 2006

Publication year:2006

Pages:472-475

Language:Chinese

ISSN:10072276

Document type:Journal article (JA)

Publisher:Chinese Society of Astronautics

Abstract:Compared with the continuous zoom system, infrared switch-zoom optical system had many advantages, such as simple structure, prefect imaging quality and easy fixing. In this paper, the design method was introduced. And an example was given. The analysis results for various fields were presented and the thermal effect on optical system was analyzed. The results show that the design is reasonable and the imaging quality is good.

Number of references:7

Main heading:Optical systems

Controlled terms:Image quality - Infrared devices - Optical design - Optical switches - Thermal effects

Uncontrolled terms:Easy fixing - Infrared optical systems - MTF - Switch zoom

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

Treatment:Theoretical (THR)

Database:Compendex

Accession number:2006199864805

Title:Dual-wavelength photochromic fulgides for parallel recording memory

Authors:Chen, Yi (1); Xiao, Jun P. (1); Yao, Baoli (2); Fan, Mei G. (1)

Author affiliation:(1) Institute of Physics and Chemistry, Chinese Academy of Science, Beijing, 100101, China; (2) State Key Laboratory of Transient Technology, Xi'an Institute of Optics and Precision Mechanic, The Chinese Academy of Sciences, Xi'an, 710068, China

Corresponding author:Chen, Y.(yichencas@yahoo.com.cn)

Source title:Optical Materials

Abbreviated source title:Opt Mater

Volume:28

Issue:8-9

Issue date:June 2006

Publication year:2006

Pages:1068-1071

Language:English

ISSN:09253467

CODEN:OMATET

Document type:Journal article (JA)

Publisher:Elsevier

Abstract:Two photochromic fulgides, 2-{2-[4-(N,N-dimethylnilino)-5-methyl-4-oxazoly]}ethylidene-4-(1-methylethylidene) tetrahydrofuran-2,5-dione (A) and 3-(1,2-dimethyl-5-phenyl-3-pyrolloethylidene)-4-(1-methylethylidene)tetrahydrofuran-2,5-dione (B), doped in PMMA as candidates of dual-wavelength optical memory for parallel recording has been investigated. With 488 nm-laser and 650 nm-laser, both "cross" and "star" images are recorded on the fulgides-PMMA film and read out clearly, respectively. Cross-talk between two fulgides in PMMA matrix and nondestructive readout has also been explored. The results show that no significant cross-talk is detected between them, and nondestructive readout is up to 201 times. © 2005 Elsevier B.V. All rights reserved.

Number of references:17

Main heading:Photochromism

Controlled terms:Doping (additives) - Image recording - Nondestructive examination - Optical data storage - Optical films - Polymethyl methacrylates - Thin films

Uncontrolled terms:Dual-wavelength - Parallel recording - Parallel recording memory - Photochromic fulgide

Classification code:741.3 Optical Devices and Systems - 741.1 Light/Optics - 722.1 Data Storage, Equipment and Techniques - 815.1.1 Organic Polymers - 716.4 Television Systems and Equipment - 712.1 Semiconducting Materials - 421 Strength of Building Materials; Mechanical Properties - 714.2 Semiconductor Devices and Integrated Circuits

Treatment:Theoretical (THR); Experimental (EXP)

DOI:10.1016/j.optmat.2005.06.006

Database:Compendex

Accession number:20064710258390

Title:Numeric analysis of structural strength of aluminous alloy rotating mirror for ultra-high speed photography

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

Author affiliation:(1) College of Engineering 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:18

Issue:8

Issue date:August 2006

Publication year:2006

Pages:1277-1281

Language:Chinese

ISSN:10014322

CODEN:QYLIEL

Document type:Journal article (JA)

Publisher:Editorial Office of High Power Laser and Particle Beams

Abstract:The 3D elastic mechanics and finite-element structure analysis principle were provided. The mechanics characteristics of the three-faced aluminous rotating mirror were analyzed, and the finite-element model was established. The stress distributions of the tri-face aluminous mirror were presented under three fits of the shaft and axle hole. The simulation results indicate that the fit modes affect the mirror structural strength little, but the axle hole weakens the structural strength obviously. The improved structure which diminishes the inner stress of the rotating mirror was presented, whose structural strength is 2.9 times and the utmost linear rate is 1.7 times of the old one, so it is more propitious to the frame-camera.

Number of references:7

Main heading:High speed photography

Controlled terms:Aluminum alloys - Computer simulation - Finite element method - Mirrors - Numerical analysis - Strength of materials

Uncontrolled terms:Aluminous alloy rotating mirror - Finite element technology - Numerical simulation - Structural strength - Three dimensional elastic mechanics - Ultra high speed photography

Classification code:541.2 Aluminum Alloys - 741.3 Optical Devices and Systems - 742.1 Photography - 921.6 Numerical Methods

Treatment:Applications (APP); Experimental (EXP)

Database:Compendex

Accession number:2006149796556

Title:Development of the laser alignment system with PSD used for shaft calibration

Authors:Jiao, Guohua (1); Li, Yulin (1); Hu, Baowen (1)

Author affiliation:(1) Xian Institute of Optics and Precision Mechanics, CAS, Xian 710068, China; (2) Graduate School, Chinese Academy of Sciences, Beijing 100039, China

Corresponding author:Jiao, G.

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

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:6150 I

Monograph title:2nd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment

Issue date:2006

Publication year:2006

Article number:61500H

Language:English

ISSN:0277786X

CODEN:PSISDG

Document type:Conference article (CA)

Conference name:2nd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment

Conference date:November 2, 2005 - November 5, 2005

Conference location:Zian, China

Conference code:66958

Sponsor:Chinese Optical Society, COS, China; Institute of Optics and Electronics, CAS, China

Publisher:SPIE

Abstract:Shaft calibration is an important technique during installation and maintenance of a rotating machine. It requires unique and high-precision measurement instruments with calculation capability, and relies on experience on heavy, high-speed, or high-temperature machines. A high-precision laser alignment system has been designed using PSD (Position Sensing Detector) to change traditional manual way of shaft calibration and to make the measurement easier and more accurate. The system is comprised of two small measuring units (Laser transmitter and detector) and a hand operated control unit or a PC. Such a laser alignment system has been used in some actual shaft alignment with offset resolution 1.5 μm and angular resolution 0.1°.

Number of references:4

Main heading:Laser theory

Controlled terms:Light transmission - Optical resolving power - Optical sensors - Rotating machinery - Signal processing

Uncontrolled terms:Laser alignment - Laser micro-displacement measurement - Position Sensing Detector (PSD) - Shaft calibration

Classification code:601.1 Mechanical Devices - 716.1 Information Theory and Signal Processing - 741.1 Light/Optics - 741.3 Optical Devices and Systems - 744.1 Lasers, General

Treatment:Theoretical (THR)

DOI:10.1117/12.676890

Database:Compendex

Accession number:20064910290019

Title:Experimental and theoretical studies on auxiliary violet light increasing the diffraction efficiency of holographic gratings in bacteriorhodopsin film

Authors:Wang, Ying-Li (0); Yao, Bao-Li (0); Menke, Neimule (0); Ren, Zhi-Wei (0); Lei, Ming (0); Ren, Li-Yong (0)

Corresponding author:Wang, Y.-L.

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:Wuli Xuebao/Acta Physica Sinica

Abbreviated source title:Wuli Xuebao

Volume:55

Issue:10

Issue date:October 2006

Publication year:2006

Pages:5200-5205

Language:Chinese

ISSN:10003290

CODEN:WLHPAR

Document type:Journal article (JA)

Publisher:Science Press, Beijing, China

Abstract:Due to the saturation absorption characteristic of bacteriorhodopsin film, in holography, when the intensity of the recording light is higher than the saturation intensity, the distribution of the transmission of the holographic gratings deviates from the cosine shape. As a result, the steady level of diffraction efficiency is very low. Using the mutual suppression property of bacteriorhodopsin films between the violet light and the red light, the saturation intensity of the film at 633nm can be increased by adding an auxiliary irradiation of 405nm violet light, which results in the holographic recording being changed from the nonlinear region to linear region. Consequently the distribution of the transmission of the holographic gratings retrieves to the cosine shape, and the diffraction efficiency is improved to a high value. Base on this principle, a three-beam holography system is set up. The diffraction efficiency and the quality of the diffraction image are shown to be greatly improved by the auxiliary violet light.

Number of references:18

Database:Compendex

Accession number:2006049658223

Title:Resonance-enhanced group delay times in an asymmetric single quantum barrier

Authors:Li, Chun-Fang (1); Spieker, Harald (3)

Author affiliation:(1) Department of Physics, Shanghai University, 99 Shangda Road, Shanghai 200444, China; (2) State Key Laboratory of Transient Optics Technology, Xi'an Institute of Optics and Precision Mechanics, Academia Sinica, 322 West Youyi Road, Xi'an 710068, China; (3) Institute for Electromagnetic Compatibility, Technical University Braunschweig, Schleinitzstrasse 23, 38106 Braunschweig, Germany

Corresponding author:Spieker, H.(h.spieker@tu-bs.de)

Source title:Optics Communications

Abbreviated source title:Opt Commun

Volume:259

Issue:1

Issue date:March 1, 2006

Publication year:2006

Pages:158-163

Language:English

ISSN:00304018

CODEN:OPCOB8

Document type:Journal article (JA)

Publisher:Elsevier

Abstract:It is shown that transmission and reflection group delay times in an asymmetric single quantum barrier are greatly enhanced by the transmission resonance when the energy of incident particles is larger than the height of the barrier. The resonant transmission group delay is of the order of the quasibound state lifetime in the barrier region. The reflection group delay can be either positive or negative, depending on the relative height of the potential energies on the two sides of the barrier. Its magnitude is much larger than the quasibound state lifetime. These predictions have been observed in microwave experiments. © 2005 Elsevier B.V. All rights reserved.

Number of references:43

Main heading:Quantum optics

Controlled terms:Microwaves - Potential energy - Resonance - Semiconductor quantum wells

Uncontrolled terms:Group delay time - Quantum barriers - Quasibound state

Classification code:711 Electromagnetic Waves - 714.2 Semiconductor Devices and Integrated Circuits - 741.1 Light/Optics - 931.1 Mechanics - 931.4 Quantum Theory; Quantum Mechanics

Treatment:Theoretical (THR)

DOI:10.1016/j.optcom.2005.08.028

Database:Compendex

Accession number:20064610240503

Title:Research and design of the circuit technology for spacial transient optical signal location system

Authors:Wang, Hua (0); Wen, Desheng (0); Liu, Xuebin (0); Guo, Rui (0); Wang, Hong (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:35

Issue:9

Issue date:September 2006

Publication year:2006

Pages:1421-1425

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, China

Abstract:A Special transient optical signal location system based on optical location method is designed. This system cooperates with energy detection system. After energy detection system detects the target signal, the location system gets the target image and stores the coordinates of target pixels. Then DSP calculates the centroid of target signal and sends the results to lower computer. The composition of system, the design method of modules, and the test results are given in this paper. Experiments show that this location system is accurate and feasible.

Number of references:7

Database:Compendex

Accession number:2006289996937

Title:Design of real-time moving point target detecting system with TMS320C6203

Authors:Liu, Bo (0); Qu, Youshan (0); Li, Yingcai (0); Fan, Xuewu (0); Xiangli, Bin (0)

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:35

Issue:6

Issue date:June 2006

Publication year:2006

Pages:950-952

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, China

Abstract:In order to realize real-time detecting and recognizing of moving point targets, a real-time image processing hardware system, which uses TMS320C6203 as its core operational processor and FPGA as a control processor, is designed. According to the experimenting and analyzing of the detecting algorithm of the point targets, a real-time detecting software of the moving point targets is developed. The experiment results prove that the designed system can complete the detection and recognition of the moving point targets in the 10 fps, 1024 × 1024 pixels image sequence with SNR no less than 3 dB, and the correct detecting probability is up to 96%, which can satisfy the real-time processing requirements in practice.

Number of references:9

Database:Compendex

Accession number:20064610240448

Title:Analysis of off-focus of linear-array pinholes in novel microscopical imaging spectrometer

Authors:Su, Xing (0); Tian, Wei-Jian (0); Zhang, Chun-Min (0)

Corresponding author:Su, X.(suxing_2000@sina.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:32

Issue:5

Issue date:September 2006

Publication year:2006

Pages:729-731+734

Language:Chinese

ISSN:10021582

CODEN:GJISEP

Document type:Journal article (JA)

Publisher:Optical Technique, Beijing, China

Abstract:Microscopical imaging spectrometer, a novel live tissue detection methodology in biomedical field, has achieved great success in the diagnose and prevention of difficult diseases, and becomes a hot spot of scientific research in the biomedical devices field in recent years. The principle of an advanced linear-array pinholes laser scanning confocal microscopical imaging spectrometer(LP-LSCMIS) was proposed. The effect of off-focus of linear-array pinholes on the character of this device was discussed. The effects on the spectral resolution of fluorescence imaging and the modulation depth of autofluorescence spectrum in the live tissue were analyzed according to the research. The equations of spectral resolution and modulation depth of the interferogram were given and discussed including the factor of off-focus.

Number of references:11

Database:Compendex

Accession number:20070110339789

Title:Fiber coupler sensitive to wavelength used to demodulate wavelength shift of fiber Bragg grating

Authors:Liu, Chunyu (1); Ye, Hong'an (1); Cao, Xue (1)

Author affiliation:(1) Department of Electronic Engineering, Heilongjiang University, Harbin 150080, China; (2) Xi'an Institute of Optics and Precision Mechanics, Chinese Acad. of Sci., Xi'an 710068, China

Corresponding author:Liu, C.(liuchunyu@hlju.edu.cn)

Source title:Guangxue Xuebao/Acta Optica Sinica

Abbreviated source title:Guangxue Xuebao

Volume:26

Issue:11

Issue date:November 2006

Publication year:2006

Pages:1623-1626

Language:Chinese

ISSN:02532239

CODEN:GUXUDC

Document type:Journal article (JA)

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

Abstract:In order to extend the application of the fiber couplers and develop the new function of fiber couplers, by utilizing the fused-taper technology, a fiber coupler sensitive to wavelength is obtained. The couplers can split light beam and simultaneously is sensitive to wavelength. The experimental value agrees with the theoretical value. In experiment, the wavelength sensitivity of the coupler is maximized to be 17.86%/nm. The coupler sensitive to wavelength is easy to be produced by the fused-taper technology and the peak wavelength of the coupling ratio can be well controlled. The coupler can be used to demodulate wavelength shift of fiber Bragg gratings (FBGs). When the Bragg wavelength of FBG agrees with the maximum sensitivity wavelength, the shift of the Bragg wavelength will influence coupling ratio of the coupler output. FBG with 1566.71 nm Bragg wavelength is demodulated by the self-made coupler. When the shift of wavelength reaches 1.80 nm, the coupling ratio varies about 20.34%. The demodulation system is simple and compatible with fiber device. It can be used in health monitoring for huge buildings.

Number of references:13

Main heading:Fiber Bragg gratings

Controlled terms:Couplings - Demodulation - Fiber optics - Monitoring

Uncontrolled terms:Bragg wavelength - Coupling ratio - Fiber coupler - Fused taper - Wavelength sensitivity

Classification code:713.1 Amplifiers - 741.1.2 Fiber Optics - 741.3 Optical Devices and Systems

Treatment:Experimental (EXP)

Database:Compendex

Accession number:20070410388587

Title:Lateral and transverse shift of arbitrarily polarized beam in total internal reflection

Authors:Zhou, Huiling (1); Chen, Xi (1); Li, Chunfang (1)

Author affiliation:(1) Department of Physics, College of Sciences, Shanghai University, Shanghai 200444, 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:Zhou, H.(zhouhl@yindatech.com)

Source title:Guangxue Xuebao/Acta Optica Sinica

Abbreviated source title:Guangxue Xuebao

Volume:26

Issue:12

Issue date:December 2006

Publication year:2006

Pages:1852-1856

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 totally reflected beam by a dielectric interface actually exhibits a lateral shift from the position of geometric reflection in the plane of incidence, and a transverse shift normal to the plane of incidence. The lateral and transverse shift of an arbitrarily polarized beam is investigated by the improved energy flux method. It is shown that the lateral shift is independent of the phase difference of the TE and TM components of the incident beam, but closely associated with the light intensity of the two components, and its form can be expressed as weighed average of the shifts of the TE and TM polarized beam in accordance with their light intensity. The transverse shift is not only dependent on the light intensity of the two components, but also closely asscociated with the phase difference of the components. Besides, whether the incident beam is elliptically polarized or linearly polarized(with polarization state other than TE or TM), the reflected beam will exhibit a transverse shift.

Number of references:23

Main heading:Light propagation

Controlled terms:Light polarization - Light reflection - Physical optics

Uncontrolled terms:Beam shift - Energy flux method - Phase difference

Classification code:741.1 Light/Optics

Treatment:Theoretical (THR)

Database:Compendex

Accession number:2006229912994

Title:The tolerance of the end mirror tilting in high speed rotary spectrometer

Authors:Gao, Xiaofeng (0); Cui, Yan (0); Xiang, Libin (0)

Corr. author affiliation: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:35

Issue:4

Issue date:April 2006

Publication year:2006

Pages:614-617

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, China

Abstract:In this paper, the tolerance of the end mirror (plane mirror) tilting in high speed rotary spectrometer is analyzed systematically by means of modulation depth and phase error. It is found that the changes resulting from the tilting of the end mirror was made up of three parts: 1) the constant OPD that reflective light increases; 2) the increased OPD concerning different ray along the perpendicular direction to light axis; 3) the moving distance of the light beam center to light axis. The SNR of the output is reduced by these changes. The formula of changed interferogram intensity is given. Methods to avoid the problems resulting from the tilting of the end mirror are also discussed.

Number of references:6

Database:Compendex

Accession number:2006289996931

Title:Small moving infrared target detection

Authors:Li, Zhe (0); Su, Xiuqin (0); Yang, Xiaojun (0); Zhang, Guanghua (0)

Corresponding author:Li, Z.(lizhe96@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:35

Issue:6

Issue date:June 2006

Publication year:2006

Pages:924-927

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, China

Abstract:According to small moving infrared target detection in the sky backgrounds, a detection algorithm is presented through analysing the characteristics of small moving infrared target, noise and background in infrared images. Firstly, by utilizing the excellent quality of multi-wavelet, the infrared images are preprocessed with the proper pre-filter. Secondly, the coarse detection is performed based on differentiating tow neighboring frames in image sequence to extract candidate targets. Finally, the candidate targets are recognized by the characteristics of moving target and noise in order to detect real small moving infrared target. The effectiveness of the algorithm is proved by the experimental results for several real infrared image sequences.

Number of references:7

Database:Compendex

Accession number:2006269966821

Title:Multi-time Wavelet Bicubic interpolation search algorithm and its application to high-resolution reconstruction of remote sensing image

Authors:Qu, You-Shan (0); Fan, Xue-Wu (0); Li, Ying-Cai (0); Zhang, Bo-Heng (0)

Corr. author affiliation:Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 110068, China

Source title:Guangdian Gongcheng/Opto-Electronic Engineering

Abbreviated source title:Guangdian Gongcheng

Volume:33

Issue:5

Issue date:May 2006

Publication year:2006

Pages:62-65+75

Language:Chinese

ISSN:1003501X

CODEN:GUGOEC

Document type:Journal article (JA)

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

Abstract:Due to the far imaging distance of optical remote sensing and the limitation of the physical size of CCD, the resolution of the remote sensing image is usually low. In order to improve the resolution and PSNR of the obtained image without damaging its original information, the Wavelet Bicubic Interpolation Search Algorithm was proposed in the previous work. On the basis of deep analysis and investigation of the Wavelet Bicubic Interpolation Search Algorithm, the Multi-time Wavelet Bicubic Interpolation Search Algorithm is proposed. The new established algorithm can realize the multi-time and high-resolution image reconstruction of optical remote sensing images. The experiment results prove that the detail information and visual effect of the 2 × 2 times high-resolution image reconstructed by the proposed algorithm is better, the 3 × 3 times and 4 × 4 times is good, 5 × 5 times is bad and more reconstructed times is not suitable to be applied in practice.

Number of references:3

Database:Compendex

Accession number:20063510090101

Title:A full numerical calculation of the Franz-Keldysh effect on magnetoexcitons in a bulk semiconductor

Authors:Zhang, Tong-Yi (1); Zhao, Wei (1); Zhu, Hai-Yan (1); Zhu, Shao-Lan (1); Liu, Xue-Ming (1)

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

Corresponding author:Zhang, T.-Y.

Source title:Chinese Physics

Abbreviated source title:Chin. Phys.

Volume:15

Issue:9

Issue date:September 1, 2006

Publication year:2006

Pages:2151-2157

Article number:041

Language:English

ISSN:10091963

E-ISSN:17414199

CODEN:CHPHF4

Document type:Journal article (JA)

Publisher:Institute of Physics Publishing

Abstract:We have performed a full numerical calculation of the Franz-Keldysh (FK) effect on magnetoexcitons in a bulk GaAs semiconductor. By employing an initial value method in combination with the application of a perfect matched layer, the numerical effort and storage size are dramatically reduced due to a significant reduction in both computed domain and number of base functions. In the absence of an electric field, the higher magnetoexcitonic peaks show distinct Fano lineshape due to the degeneracy with continuum states of the lower Landau levels. The magnetoexcitons that belong to the zeroth Landau level remain in bound states and lead to Lorentzian lineshape, because they are not degenerated with continuum states. In the presence of an electric field, the FK effect on each magnetoexcitonic resonance can be identified for high magnetic fields. However, for low magnetic fields, the FK oscillations dominate the spectrum structure in the vicinity of the bandgap edge and the magnetoexcitonic resonances dominate the spectrum structure of higher energies. In the moderate electric fields, the interplay of FK effect and magnetoexcitonic resonance leads to a complex and rich structure in the absorption spectrum. © 2006 Chin. Phys. Soc. and IOP Publishing Ltd.

Number of references:53

Main heading:Excitons

Controlled terms:Boundary value problems - Electric field effects - Electron energy levels - Energy gap - Magnetic field effects - Oscillations - Resonance - Semiconducting gallium arsenide - Spectrum analysis

Uncontrolled terms:Bulk semiconductor - Franz-Keldysh effect - Magnetoexciton - Optical absorption spectrum

Classification code:931.3 Atomic and Molecular Physics - 931.1 Mechanics - 921.6 Numerical Methods - 941 Acoustical and Optical Measuring Instruments - 712.1.2 Compound Semiconducting Materials - 701.2 Magnetism: Basic Concepts and Phenomena - 701.1 Electricity: Basic Concepts and Phenomena - 712.1 Semiconducting Materials

Treatment:Literature review (LIT); Theoretical (THR); Experimental (EXP)

DOI:10.1088/1009-1963/15/9/041

Database:Compendex

Accession number:2006289996683

Title:Theoretical and experimental studies on multi-beam interference by using pyramid lens

Authors:Lei, Ming (1); Yao, Baoli (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, The Chinese Academy of Sciences, Xi'an 710068, China; (2) Graduate College, The Chinese Academy of Sciences, Beijing 100039, China

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

Source title:Guangxue Xuebao/Acta Optica Sinica

Abbreviated source title:Guangxue Xuebao

Volume:26

Issue:5

Issue date:May 2006

Publication year:2006

Pages:757-762

Language:Chinese

ISSN:02532239

CODEN:GUXUDC

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:A method of producing 2D and 3D optical lattices with multi-beam interference by using the pyramid lens and the top-chopped pyramid lens is proposed. The structures of 2D and 3D optical lattices formed by interference of multiple z-axis symmetrically distributed plane waves are numerically simulated and analyzed. The relation between the optical-field distribution and the light beam number is conducted, the interference field tends complicate with the rise of beam numbers, when the arrises of the pyramid are enough and the pyramid can be regarding as an axicon, the interference field becomes a Bassel distribution with a concentric circles structure. In the experiment, the multi-arris pyramid lens and the multi-arris top-chopped pyramid lens are used to generate optical lattices. The experimental results are quite consistent with the simulation results.

Number of references:19

Main heading:Light interference

Controlled terms:Computer simulation - Optoelectronic devices - Structure (composition) - Three dimensional - Two dimensional

Uncontrolled terms:Bassel distribution - Concentric circles structure - Interference - Interference field - Multiarris pyramid lens - Multiarris top chopped pyramid lens - Multibeam interference - Optical field distribution - Optical lattice - Optical tweezers - Optoelectronics - Photonic crystal - Plane waves - Pyramid lens

Classification code:723.5 Computer Applications - 741.1 Light/Optics - 741.3 Optical Devices and Systems

Treatment:Experimental (EXP)

Database:Compendex

Accession number:2006229912979

Title:Simulation of light propagation in fiber optic taper by Monte Carlo method

Authors:Sun, Aijuan (0); Tian, Weijian (0); Qu, Youshan (0); Bu, Jiangping (0); Wang, Yaoxiang (0)

Corr. author affiliation:Fiber and Integrated Optics Laboratory, 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:35

Issue:4

Issue date:April 2006

Publication year:2006

Pages:552-554

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, China

Abstract:Photon properties of transmission and spatial distribution in fiber optic tapers were modeled and stimulated by Monte Carlo modeling. Photons distribution and intensities distribution after photons transmit through tapered optic fiber were presented. According to the stimulation, most photons after propagation through the fiber optic taper distribute in the center of detector, and the number of photons detected by detector was decreased as the distance between the detector point and the center point of the detector increases. If the fiber optic tapers have certain taper ratio and different length, the distributions of photons propagating through them were similar and the intensity reduced with the growth of the length of fiber. The study results provide an important evidence of design and application of fiber optic tapers.

Number of references:8

Database:Compendex

Accession number:20064610230942

Title:An efficient unsupervised MRF image clustering method

Authors:Hou, Yimin (1); Guo, Lei (1); Lun, Xiangmin (2)

Author affiliation:(1) Department of Automation, Northwestern Polytechnical University, Xi'an 710072; (2) Xi'an Institute of Optics and Precision Mechanics, Cas, Xi'an 710068

Corresponding author:Hou, Y.

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

Abbreviated source title:Lect. Notes Comput. Sci.

Volume:4252 LNAI - II

Monograph title:Knowledge-Based Intelligent Information and Engineering Systems - 10th International Conference, KES 2006, Proceedings

Issue date:2006

Publication year:2006

Pages:19-27

Language:English

ISSN:03029743

E-ISSN:16113349

ISBN-10:3540465375

ISBN-13:9783540465379

Document type:Conference article (CA)

Conference name:10th International Conference on Knowledge-Based Intelligent Information and Engineering Systems, KES 2006

Conference date:October 9, 2006 - October 11, 2006

Conference location:Bournemouth, United kingdom

Conference code:68477

Publisher:Springer Verlag

Abstract:On the basis of Markov Random Field (MRF), which uses context information, in this paper, a robust image segmentation method is proposed. The relationship between observed pixel intensities and distance between pixels are introduced to the traditional neighbourhood potential function, which described the probability of pixels being classified into one class. To perform an unsupervised segmentation, the Bayes Information Criterion (BIC) is used to determine the class number. The K-means is employed to initialise the classification and calculate the mean values and variances of the classes. The segmentation is transformed to maximize a posteriori (MAP) procedure. Then, the Iterative Conditional Model (ICM) is employed to solve the MAP problem. In the experiments, the proposed method is adopted with K-means, traditional Expectation-Maximization (EM) and MRF image segmentation techniques, for noisy image segmentation applying on synthetic and real images. The experiment results and the histogram of signal to noise ratio (SNR)-miss classification ratio (MCR) showed that the proposed algorithm is the better choice. © Springer-Verlag Berlin Heidelberg 2006.

Number of references:14

Main heading:Image segmentation

Controlled terms:Algorithms - Markov processes - Mathematical models - Probability - Signal to noise ratio

Uncontrolled terms:Bayes Information Criterion (BIC) - Expectation-Maximization (EM) - Iterative Conditional Model (ICM) - Maximize a posteriori (MAP)

Classification code:716.1 Information Theory and Signal Processing - 723.2 Data Processing and Image Processing - 921 Mathematics - 922.1 Probability Theory

Treatment:Theoretical (THR)

Database:Compendex

Accession number:20070410380353

Title:Automatic extraction of tree crowns from aerial imagery in urban environment

Authors:Liu, Jiahang (1); Li, Deren (3); Qin, Xunwen (4); Yang, Jianfeng (2)

Author affiliation:(1) Institute of Image Processing and Pattern Recognition, J.T. Univ., Shanghai, 200240, China; (2) Institute of Optics and Precision Machines, CAS, Xi'an, 710068, China; (3) LIESMARS, Wuhan Univ., Wuhan, 430079, China; (4) China Geological Survey, Beijing, 100083, China

Corresponding author:Liu, J.(jhliu@opt.cn)

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

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:6419

Monograph title:Geoinformatics 2006: Remotely Sensed Data and Information

Issue date:2006

Publication year:2006

Article number:64190G

Language:English

ISSN:0277786X

CODEN:PSISDG

ISBN-10:0819465283

ISBN-13:9780819465283

Document type:Conference article (CA)

Conference name:Geoinformatics 2006: Remotely Sensed Data and Information

Conference date:October 28, 2006 - October 29, 2006

Conference location:Wuhan, China

Conference code:68976

Sponsor:NSFC-Natural Science Foundation of China; CASM-Chinese Academy of Surveying and Mapping, China; CPGPS-The Int Assoc of Chinese Prof in Global Positioning Syst

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

Abstract:Traditionally, field-based investigation is the main method to investigate greenbelt in urban environment, which is costly and low updating frequency. In higher resolution image, the imagery structure and texture of tree canopy has great similarity in statistics despite the great difference in configurations of tree canopy, and their surface structures and textures of tree crown are very different from the other types. In this paper, we present an automatic method to detect tree crowns using high resolution image in urban environment without any apriori knowledge. Our method catches unique structure and texture of tree crown surface, use variance and mathematical expectation of defined image window to position the candidate canopy blocks coarsely, then analysis their inner structure and texture to refine these candidate blocks. The possible spans of all the feature parameters used in our method automatically generate from the small number of samples, and HOLE and its distribution as an important characteristics are introduced into refining processing. Also the isotropy of candidate image block and holes' distribution is integrated in our method. After introduction the theory of our method, aerial imageries were used (with a resolution about 0.3m) to test our method, and the results indicate that our method is an effective approach to automatically detect tree crown in urban environment.

Number of references:9

Main heading:Forestry

Controlled terms:Aerial photography - Cost effectiveness - Image segmentation - Image sensors - Surface structure - Urban planning

Uncontrolled terms:Automatic recognition - High resolution imagery - Tree detection - Vegetation extraction

Classification code:911.2 Industrial Economics - 821.0 Woodlands and Forestry - 811.0.3 Economics, Research and Miscellaneous - 931.2 Physical Properties of Gases, Liquids and Solids - 742.1 Photography - 723.2 Data Processing and Image Processing - 403.1 Urban Planning and Development - 741.3 Optical Devices and Systems

Treatment:Experimental (EXP)

DOI:10.1117/12.712732

Database:Compendex

Accession number:20070410389307

Title:Research and application of technology of microscopical imaging spectrometer

Authors:Su, Xing (0); Tian, Wei-Jian (0); Zhang, Chun-Min (0)

Corresponding author:Su, X.(suxing_2000@sina.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:32

Issue:6

Issue date:November 2006

Publication year:2006

Pages:820-823

Language:Chinese

ISSN:10021582

CODEN:GJISEP

Document type:Journal article (JA)

Publisher:Optical Technique, Beijing, China

Abstract:Microscopical imaging spectrometer is a novel detection methodology in biomedical field, it has achieved great success in the diagnosis and prevention of difficult diseases, and becomes a hot spot of scientific research in the biomedical devices field. The principle and characteristic of all the functional modules are presented. The main parameters of the device are discussed. The developing status in quo of this technology is described. The technical architectures and advantages of all the e-merged devices are detailed. The research result shows microscopical imaging spectrometer will get extensive applications in biological, medical, chemical and material fields as a new analytical method.

Number of references:12

Database:Compendex

Accession number:20064610240495

Title:Method of near-lossless compression for the interferogram hyperspectral images based on rectangle ROI coding

Authors:Zhang, Fan (0); Li, Zitian (0); Xue, Lijun (0)

Corresponding author:Zhang, F.(zhangfan@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:35

Issue:9

Issue date:September 2006

Publication year:2006

Pages:1388-1391

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, China

Abstract:A new compression method of interferogram hyperspectral images based on ROI (Region of Interest) coding is proposed, which is based on the analyses of the characteristics of hyperspectral imaging spectrometry. This method that uses the symmetry of the interfering stripes, processes the intra-frame compression and integrates the rectangle ROI coding improves compression ratio of remote sensing images and reaches the requirements of near-lossless compression. Experimental results showed that when relative spectral quadratic error was 2.04% the compression radio reached 9.66:1.

Number of references:10

Database:Compendex

Accession number:2006229913000

Title:A new way for image fusion based on wavelet transform

Authors:Yan, Wenhao (0); Ma, Caiwen (0); Zhang, Ming (0); Wang, Chen (0)

Corresponding author:Yan, W.(jewon0112@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:35

Issue:4

Issue date:April 2006

Publication year:2006

Pages:638-640

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, China

Abstract:The way of coefficient convolution has shortcomings of lost edge and low contrast ratio in image fusion filled with abundant slight edges. In order to solve the problem, a new method which combine Canny edge detection with wavelet transform and directional variance is introduced. It can improve the partial resolution with enhanced edge and the partial contrast ratio obviously, so accord with the human visual character further. And the result from experiment is satisfying.

Number of references:7

Database:Compendex

Accession number:20063610097727

Title:Hybrid numerical methods for exponential models of growth

Authors:Liu, X.-M. (1)

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

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

Source title:Applied Mathematics and Computation (New York)

Abbreviated source title:Appl Math Comput (New York)

Volume:179

Issue:2

Issue date:August 15, 2006

Publication year:2006

Pages:772-778

Language:English

ISSN:00963003

CODEN:AMHCBQ

Document type:Journal article (JA)

Publisher:Elsevier Inc.

Abstract:A series of novel numerical methods for the exponential models of growth are proposed. Based on these methods, hybrid predictor-corrector methods are constructed. The hybrid numerical methods can increase the accuracy and the computing speed obviously, as well as enlarge the stability domain greatly. © 2005.

Number of references:17

Main heading:Numerical methods

Controlled terms:Computational complexity - Error correction - Fiber lasers - Mathematical models - Ordinary differential equations

Uncontrolled terms:Euler's method - Growth equations - Hybrid - Predictor corrector methods

Classification code:721.1 Computer Theory, Includes Formal Logic, Automata Theory, Switching Theory, Programming Theory - 921.2 Calculus - 921.6 Numerical Methods

Treatment:Theoretical (THR)

DOI:10.1016/j.amc.2005.11.116

Database:Compendex

Accession number:2006259949783

Title:The modulation degree analysis of the High Etendue Imaging Fourier Transform Spectrometer

Authors:Tao, Ran (0); Xiang, Libin (0); Du, Shusong (0); Zhang, Wenxi (0); Su, Lijuan (0)

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:35

Issue:5

Issue date:May 2006

Publication year:2006

Pages:675-679

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, China

Abstract:The conception of the High Etendue Imaging Fourier Transform Spectrometer (HEIFTS) is introduced and the principle of the modified Mach-Zehnder interferometer, which is used in the spectrometer, is analyzed. Meanwhile, the optical path difference and the degree of modulation of this kind of interferometer are calculated. It s easy to be found that, in order to get the better diagram of the degree of modulation, both the inclination of the two image planes and the image aperture angle must be small angles, and both the lateral and longitudinal offsets must be smaller. Then the effects on the degree of modulation by the offsets and the dimension of the CCD array are discussed. By adjusting the parameters, the three degrees of the modulation can reach 90%, which can satisfy the application requirement of the spectrometer.

Number of references:7

Database:Compendex

Accession number:20070410388882

Title:Image compression based on the combination of lifting wavelet transform and fractal

Authors:Song, Ping (0); Liu, Bo (0); Cao, Jianzhong (0); Zhang, Zhongmin (0); Li, Rong (0)

Corresponding author:Song, P.(hantang_ss@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:35

Issue:11

Issue date:November 2006

Publication year:2006

Pages:1784-1787

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, China

Abstract:An image compression project based on the combination of lifting wavelet transform and fractal was proposed. Making the best of the coefficients distribution, the algorithm was consisted of improved fractal coding in low-frequency of lifting wavelet transform coefficients and SPECK coding in other parts. The experimental results show that the quality of the image was improved at enhancing compression efficiency.

Number of references:8

Database:Compendex

Accession number:2006289997056

Title:Preparation and spectroscopic characteristics of ytterbium silicate glasses

Authors:Li, Wei-Nan (0); Zou, Kuai-Sheng (0); Lu, Min (0); Xiang, Li-Bin (0)

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

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

Volume:26

Issue:6

Issue date:June 2006

Publication year:2006

Pages:983-986

Language:Chinese

ISSN:10000593

CODEN:GYGFED

Document type:Journal article (JA)

Publisher:Science Press, Beijing, China

Abstract:Yb3+-doped silicate glasses were prepared at high temperature, which had a small non-linear refractive index coefficient N2(1.62), lower transformation temperature and lower softening temperature (540°C and 585°C, respectively). The absorption spectrum from 850 to 1100 nm showed that the main peak was at 975 nm with two subpeaks near 908 nm and 944 nm, respectively. Emission peak was at 1010 nm in the fluorescence spectrum with a 65.5 nm fluorescence half-line width. The integrated absorption cross section, stimulated emission cross section and fluorescence time were calculated to be 3.44 × 104 pm2, 0.71 pm2 and 1.05 ms, respectively, which satisfy the requirements of laser glasses.

Number of references:8

Database:Compendex

Accession number:20070710428081

Title:Study on characters and experiment of FBG hydrophone

Authors:Zheng, Chengdong (0); 0; 0; 0

Corresponding author:Zheng, C.(adongz-11@sohu.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:35

Issue:12

Issue date:December 2006

Publication year:2006

Pages:1934-1940

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, China

Abstract:The acoustic sensing characters of Fiber Bragg Grating (FBG) hydrophone were addressed and the relationship on FBG's sensing character and the reflection index, grating distance and reflection wavelength bandwidth of the FBG was analyzed. By improving encapsulation structure of FBG sensing-head, the acoustic sensing-index was increased. The experiment sensing result of FBG hydrophone was compared with which of standard hydrophone and response dexterous was demarcated. The sensing signal was demodulated with demodulational circuit and the result according with acoustic signal was obtained. The test result indicates that at the acoustic frequency of 1 kHz-30 kHz, compared with the standard piezo-acoustic hydrophone, the frequency response of the FBG hydrophone is very flat and the SNR of output signal is good. The improved measures are in effect.

Number of references:7

Database:Compendex

Accession number:2006109737687

Title:Optical image processing using the photoinduced anisotropy of pyrryfulgide

Authors:Menke, Neimule (1); Yao, Baoli (1); Wang, Yingli (1); Zheng, Yuan (1); Lei, Ming (1); Ren, Liyong (1); Chen, Guofu (1); Chen, Yi (2); Fan, Meigong (2); Li, Tiankai (2)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710068, China; (2) Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100101, China

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

Source title:Journal of the Optical Society of America A: Optics and Image Science, and Vision

Abbreviated source title:J Opt Soc Am A

Volume:23

Issue:2

Issue date:February 2006

Publication year:2006

Pages:267-271

Language:English

ISSN:10847529

CODEN:JOAOD6

Document type:Journal article (JA)

Publisher:Optical Society of America

Abstract:A synthesized photochromic compound - pyrrylfulgide - is prepared as a thin film doped in a polymethylmethacrylate (PMMA) matrix. Under irradiation by UV light, the film converts from the bleached state into a colored state that has a maximum absorption at 635 nm and is thermally stable at room temperature. When the colored state is irradiated by a linearly polarized 650 nm laser, the film returns to the bleached state; photoinduced anisotropy is produced during this process. Application of optical image processing methods using the photoinduced anisotropy of the pyrrylfulgide/PMMA film is described. Examples in non-Fourier optical image processing, such as contrast reversal and image subtraction and summation, as well as in Fourier optical image processing, such as low-pass filtering and edge enhancement, are presented. © 2006 Optical Society of America.

Number of references:15

Main heading:Image processing

Controlled terms:Absorption - Anisotropy - Irradiation - Photochemical reactions - Polymethyl methacrylates - Thermodynamic stability - Thin films - Ultraviolet radiation

Uncontrolled terms:Optical image processing - Photochromic compound - Photoinduced anisotropy - Pyrrylfulgide - Ultraviolet light

Classification code:622.2 Radiation Effects - 641.1 Thermodynamics - 741.1 Light/Optics - 815.1.1 Organic Polymers - 931.2 Physical Properties of Gases, Liquids and Solids

Treatment:Theoretical (THR)

DOI:10.1364/JOSAA.23.000267

Database:Compendex

Accession number:20065210332522

Title:Multi-wavelength erbium-doped fiber lasers on the assistance of high-nonlinear photonic-crystal fibers

Authors:Liu, Xueming (1); Zhao, Wei (1)

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

Corresponding author:Liu, X.

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

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:6351 II

Monograph title:Passive Components and Fiber-based Devices III

Issue date:2006

Publication year:2006

Article number:63513O

Language:English

ISSN:0277786X

CODEN:PSISDG

ISBN-10:0819464465

ISBN-13:9780819464460

Document type:Conference article (CA)

Conference name:Passive Components and Fiber-based Devices III

Conference date:September 5, 2006 - September 7, 2006

Conference location:Gwangju, Korea, Republic of

Conference code:68848

Sponsor:SPIE; Optical Society of Korea, South Korea; Korea Assoc. for Photonics Indust. Dev., South Korea; Gwangju City, South Korea; Chinese Optical Society, China

Publisher:SPIE

Abstract:Based on self-stability effect of four-wave mixings in high-nonlinear photonic-crystal fibers, multi-wavelength erbium-doped fiber lasers are proposed and demonstrated experimentally at room temperature. The proposed lasers have the capacity of switching and tuning with excellent uniformity and stability.

Number of references:6

Main heading:Fiber lasers

Controlled terms:Crystal structure - Erbium - Four wave mixing - Nonlinear optics - Photons

Uncontrolled terms:Photonic-crystal fibers - Room temperature - Self-stability effects

Classification code:547.2 Rare Earth Metals - 711.1 Electromagnetic Waves in Different Media - 741.1.1 Nonlinear Optics - 744.4 Solid State Lasers - 931.3 Atomic and Molecular Physics - 933.1.1 Crystal Lattice

Treatment:Theoretical (THR); Experimental (EXP)

DOI:10.1117/12.688531

Database:Compendex

Accession number:2006139790471

Title:Growth and characterization of Ga<inf>x</inf>in<inf>1-x</inf>As <inf>1-y</inf>Sb<inf>y</inf> epitaxial layers grown by LP-MOCVD

Authors:Wang, Jingwei (1); Wang, Yiding (2); Wang, Tao (1); Yang, Shuren (2); Li, Xiaoting (3); Yin, Jingzhi (2); Sai, Xiaofeng (1); Gao, Hongkai (1)

Author affiliation:(1) Xi'an Institute of Optical and Precision Mechanics, CAS, Xi'an, 710068, China; (2) National Key Lab. of Integrated Optoelectronics, Lab. Zone, Jilin University, Jilin, 130600, China; (3) Science College, Chang'an University, Xi'an, 710061, China

Corresponding author:Wang, J.(wjw@opt.ac.cn)

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

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:6029

Monograph title:ICO20: Materials and Nanostructures

Issue date:2006

Publication year:2006

Article number:602912

Language:English

ISSN:0277786X

CODEN:PSISDG

Document type:Conference article (CA)

Conference name:ICO20: Materials and Nanostructures

Conference date:August 21, 2005 - August 26, 2005

Conference location:Changchun, China

Conference code:66930

Sponsor:AFOSR Asia Office; Chinese Academy of Sciences, CAS, China; Chinese Academy of Engineering, CAE, China; Chinese Association of Science and Technology, CAST, China; European Optical Society, EOS

Publisher:SPIE

Abstract:Epitaxial layers and monolayer of Ga<inf>0.98</inf>In<inf>0.02</inf>As <inf>0.24</inf>Sb<inf>0.76</inf> quaternary alloys lattice matched to GaSb substrates were grown by our home-made low pressure metal organic chemical vapor deposition (LP-MOCVD). Lattice mis-match (Δa/a &sim;2.5%) between Ga<inf>0.98</inf>In<inf>0.02</inf>As<inf>0.24</inf>Sb<inf>0.76</inf> quaternary alloys and GaSb substrate was obtained. Mirrorlike surface morphologies were investigated by SEM and AFM. Undoped Ga<inf>0.98</inf>In<inf>0.02</inf>As <inf>0.24</inf>Sb<inf>0.76</inf> epitaxial layers grown on semi-insulated GaAs substrates indicates n-type with carrier density of 1.8×10 17cm-3 and electron mobility of 2551 cm2V -1S-1. Growth at this temperature yielded a root-mean-square (rms) surface roughness of 160 nm. The effects of growth parameters on epitaxial layers were discussed. It is shown that under proper growth conditions, containing growth temperature (570-620°C), V/III ratios (2-6) and flux of carrier gas, smooth and high quality Ga0.98In <inf>0.02</inf>As<inf>0.24</inf>Sb<inf>0.76</inf> epitaxial layers can be achieved.

Number of references:13

Main heading:Epitaxial growth

Controlled terms:Alloying elements - Metallorganic chemical vapor deposition - Morphology - Self assembly - Semiconducting gallium - Surface roughness

Uncontrolled terms:GaInAsSb - Growth temperature - LP-MOCVD - Mis-matched

Classification code:933.1.2 Crystal Growth - 931.2 Physical Properties of Gases, Liquids and Solids - 802.3 Chemical Operations - 802.2 Chemical Reactions - 714.2 Semiconductor Devices and Integrated Circuits - 712.1.1 Single Element Semiconducting Materials - 531.1 Metallurgy

Treatment:Theoretical (THR); Experimental (EXP)

DOI:10.1117/12.667720

Database:Compendex

Accession number:2006169831573

Title:Luminous intensity of super-light LED in thermal vacuum test

Authors:Wang, Lin (0); Ji, Zhong-Ying (0); Wang, Zhong-Hou (0); Liu, Xue-Bin (0)

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

Source title:Bandaoti Guangdian/Semiconductor Optoelectronics

Abbreviated source title:Bandaoti Guangdian

Volume:27

Issue:1

Issue date:February 2006

Publication year:2006

Pages:20-22+27

Language:Chinese

ISSN:10015868

CODEN:BAGUE5

Document type:Journal article (JA)

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

Abstract:Super-light white LED is a recently developing solid-state light-emitting device, whose advantages are suitable for space illumination application. Some LED examples are tested in thermal vacuum test to examine the LED's luminous intensity, material and process in such hard condition. The results show that the performance of super-light white LED is rather stable in thermal vacuum test, and can be used in space illumination field.

Number of references:13

Database:Compendex

Accession number:2006139793310

Title:High-resolution & high-speed rotary fourier transform spectrometer

Authors:Yang, Xiaoxu (1); Zhou, Sizhong (1); Lu, Qunbo (1); Xiangli, Bin (1); Zhou, Renkui (1)

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

Corresponding author:Yang, X.(yxx@opt.ac.cn)

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

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:6150 II

Monograph title:2nd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment

Issue date:2006

Publication year:2006

Article number:61504X

Language:English

ISSN:0277786X

CODEN:PSISDG

Document type:Conference article (CA)

Conference name:2nd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment

Conference date:November 2, 2005 - November 5, 2005

Conference location:Zian, China

Conference code:66958

Sponsor:Chinese Optical Society, COS, China; Institute of Optics and Electronics, CAS, China

Publisher:SPIE

Abstract:Rotary Fourier Transform Spectrometer (RFTS) contains a rotary refractor, which produces continuous variational optical path difference (OPD). This specialty makes RFTS suitable to high speed spectrum measuring. Maximal OPD can increase so easily through increasing maximal sampling angle from which the system can get high resolution reconstructed spectrum also. Depending on rotating refractor to produce OPD brings some important advantages such as good immunity to outside influences, light weight, small size, etc. The basic theory of this new kind of spectrogram measuring instrument is introduced. OPD is the most important aspect to be considered in studying or designing a Fourier Transform spectrometer(FTS) system. OPD formulas of RFTS are deduced. RFTS has nonlinearity of OPD, which brings interferogram periodicity drifting and reconstructed spectrum noise. The index of OPD nonlinearity is defined and important aspects of nonlinearity are analyzed, including relationships with the refractor's refractive index and the rotating angle. Replacing OPD in Fourier Transform with nonlinear OPD of RFTS can buck the error of nonlinear OPD in reconstructed spectrum, and computer simulation shows the method effective.

Number of references:4

Main heading:Fourier transforms

Controlled terms:Control nonlinearities - Nonlinear systems - Optical resolving power - Refractive index - Spectrum analysis

Uncontrolled terms:Nonlinearity - Optical path difference(OPD) - Refractors - Rotary Fourier Transform spectrometers(RFTS)

Classification code:731.1 Control Systems - 741.1 Light/Optics - 921.3 Mathematical Transformations

Treatment:Theoretical (THR)

DOI:10.1117/12.676756

Database:Compendex

Accession number:2006139786461

Title:Analysis of the effect on tissue autofluorescence detection from off-focus of Linear-array pinholes in LP-Laser Scanning Confocal fluorescence Microscopical Imaging Spectrometer

Authors:Su, Xing (1); Tian, Weijian (1); Zhang, Chunmin (3)

Author affiliation:(1) Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710068, China; (2) Graduate School, CAS, Beijing 100039, China; (3) Xi'An Jiaotong University, Xi'an 710049, China

Corresponding author:Su, X.

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

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:6026

Monograph title:ICO20: Biomedical Optics

Issue date:2006

Publication year:2006

Article number:60260S

Language:English

ISSN:0277786X

CODEN:PSISDG

Document type:Conference article (CA)

Conference name:ICO20: Biomedical Optics

Conference date:August 21, 2005 - August 26, 2005

Conference location:Changchun, China

Conference code:66928

Publisher:SPIE

Abstract:The research of antofluorescence of the live tissue starts to be used in the disease diagnoses and prevention in recent years. The laser scanning confocal microscope has always played a great role in the autofluorescence research in biomedical field. As the technology of imaging spectrometer got successfully used in the remote sensing fields, microscopical imaging spectrometer for biomedical analyses emerged after the integration of imaging spectrometer and laser scanning confocal microscope. It can get the autofluorescence image and the spectral information of the sample simultaneously, this will supply more information to the diagnoses for difficult diseases. In this paper the principle of a Linear-array Pinholes Laser Scanning Confocal Microscopical Imaging Spectrometer (LP-LSCMIS) developed by the authors is proposed. It can be widely used in the autofluorescence detection of the live tissue in the body, such as the gastric, kidney, etc. The effect of off-focus of linear-array pinholes on microscopical imaging spectrometer subsystem in this device is mainly analyzed. The spatially resolution of fluorescence imaging and the modulation depth of autofluorescence spectrum in the live tissue is affected by the off-focus according to our research. We analyse the modulation depth of the interferogram thinking of the factor of off-focus.

Number of references:16

Main heading:Tissue

Controlled terms:Fluorescence - Imaging systems - Lasers - Remote sensing - Scanning - Spectrometers

Uncontrolled terms:Autofluorescence - Confocal - Microscopical Imaging Spectrometer - Modulation Depth - Off-focus

Classification code:461.2 Biological Materials and Tissue Engineering - 723.2 Data Processing and Image Processing - 731.1 Control Systems - 741.1 Light/Optics - 741.3 Optical Devices and Systems - 744.1 Lasers, General

Treatment:Theoretical (THR)

DOI:10.1117/12.667176

Database:Compendex

Accession number:2006259949811

Title:A optimize design of bending mechanism for toroidal focusing mirror

Authors:Deng, Xiaoguo (0); Zhou, Sizhong (0); Xiong, Rensheng (0); Guo, Zhili (0)

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:35

Issue:5

Issue date:May 2006

Publication year:2006

Pages:797-800

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, China

Abstract:The bending theory of bending mechanism loaded at four points of toroidal focusing mirror in synchrotron radiation is introduced, and a model of bending mechanism is established. A nonlinear error function between ideal arc and factual arc is achieved, the optimized parameter l to minimize the error is given, based on the solution of error function using the technology of CAE. The practical application in toroidal focusing mirror of BESRF-3B3 beamline shows that this system is successful.

Number of references:7

Database:Compendex

Accession number:2006139784364

Title:Applications of two types of calibration method to CCD camera's image center measurement

Authors:Wang, Feng (0); Zhou, Renkui (0); Yang, Xiaoxu (0); Chen, Min (0); Zou, Yongxing (0); Luo, Xiujuan (0); Cao, Jianzhong (0); Zhou, Sizhong (0); Nie, Haozhi (0)

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:35

Issue:2

Issue date:February 2006

Publication year:2006

Pages:294-298

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, China

Abstract:The practical applications of two types of calibration method to CCD camera's image center measurement were researched. With regard to image center, pixels' distribution on image plane is still symmetrical even under the influence of lens distortion. Based on this, in direct optical method, the image center is judged by the symmetry of pixels' position in vertical and horizontal directions on image plane. In lens distortion based perspective projection method, a complete imaging model could be constructed and image center is one of the parameters in the model. Two kinds of main lens distortion are considered in the model. Tests were done and the comparison was made for two methods. The second method's strong convergence property was confirmed.

Number of references:11

Database:Compendex

Accession number:20064310196554

Title:A dual-wavelength sampled fiber Bragg grating and its application in L-band dual-wavelength erbium-doped fiber lasers

Authors:Liu, Xueming (1)

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

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

Source title:IEEE Photonics Technology Letters

Abbreviated source title:IEEE Photonics Technol Lett

Volume:18

Issue:20

Issue date:October 15, 2006

Publication year:2006

Pages:2114-2116

Language:English

ISSN:10411135

CODEN:IPTLEL

Document type:Journal article (JA)

Publisher:Institute of Electrical and Electronics Engineers Inc.

Abstract:A novel dual-wavelength (DW) sampled fiber Bragg grating (SFBG) is proposed and demonstrated for the first time to the author's best knowledge. This kind of SFBG can realize a DW operation with uniform reflection peaks rather than multiple nonuniform peaks shown in conventional SFBGs. Based on the designed SFBG, we have proposed a novel L-band DW erbium-doped fiber laser, which has such a unique merit that the spacing of the two wavelengths keeps unchanged during tuning laser. © 2006 IEEE.

Number of references:12

Main heading:Fiber Bragg gratings

Controlled terms:Fiber lasers - Four wave mixing - Laser tuning - Reflection

Uncontrolled terms:Dual wavelength lasers - Erbium-doped fiber laser (EDFL) - Sampled fiber Bragg grating - Uniform reflection

Classification code:741.1 Light/Optics - 741.1.2 Fiber Optics - 741.3 Optical Devices and Systems - 744.1 Lasers, General

Treatment:Theoretical (THR)

DOI:10.1109/LPT.2006.883227

Database:Compendex

Accession number:20063010029278

Title:Optimized design of photonic crystal polarization maintaining fibers with elliptical core

Authors:Zhang, Ya-Ni (1); Miao, Run-Cai (2)

Author affiliation:(1) Institute of Physics and Information Technology, Shanxi Normal University, Xi'an 710062, China; (2) Department of Physics, Baoji College of Arts and Science, Baoji 721007, China; (3) Xi'an Institute of Optics and Precision Mechanics of CAS, 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:17

Issue:5

Issue date:May 2006

Publication year:2006

Pages:529-532

Language:Chinese

ISSN:10050086

CODEN:GUJIE9

Document type:Journal article (JA)

Publisher:Board of Optronics Lasers

Abstract:The structures of photonic crystal fibers (PCFs) are changed by means of adjusting the size and pitch of air-hole. The monomer polymerization method is adopted based on methyl methacrylate (MMA). And the two kinds of PCFs preform with different polarization maintaining (PM) degree are developed. And further, the samples with different parameter structure are developed via using second stack draw. Finally, the optical properties and PM characteristics of two samples are studied. The optimize scheme of PM-PCFs with elliptical core is prouded experimentally.

Number of references:10

Main heading:Optical fibers

Controlled terms:Birefringence - Fiber optics - Light extinction - Monomers - Optical properties - Polarization - Polymerization

Uncontrolled terms:Air hole - Elliptical core - Extinction ratio - Methyl methacrylate (MMA) - Monomer polymerization - Photonic crystal fiber (PCF) - Polarization maintaining (PM) - Second stack draw

Classification code:741.1 Light/Optics - 815.2 Polymerization

Treatment:Experimental (EXP)

Database:Compendex

Accession number:2006229914240

Title:Optimization and comparison of single- and dual-pump fiber-optical parametric amplifiers with dispersion fluctuations

Authors:Liu, Xueming (1); Zhao, Wei (1); Lu, Keqing (1); Zhang, Tongyi (1); Wang, Yishan (1); Ouyang, Xian (1); Zhu, Shaolan (1); Chen, Guofu (1); Hou, Xun (1)

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

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

Source title:Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers

Abbreviated source title:Jpn J Appl Phys Part 1 Regul Pap Short Note Rev Pap

Volume:45

Issue:5 A

Issue date:May 9, 2006

Publication year:2006

Pages:4074-4082

Language:English

ISSN:00214922

E-ISSN:13474065

CODEN:JAPNDE

Document type:Journal article (JA)

Publisher:Japan Society of Applied Physics

Abstract:Solutions for fiber-optical parametric amplifiers (FOPAs) with dispersion fluctuations are derived using matrix operators. On the basis of the propagation matrix product and the hybrid genetic algorithm, we have optimized and compared single- and dual-pump FOPAs with zero-dispersion-wavelength variations. The simulations prove that the design of FOPAs involves multimodal function optimization problems. The numerical results show that dual-pump FOPAs are highly sensitive to dispersion fluctuations whereas dispersion variations have less impact on the gain of single-pump FOPAs. To increase signal gain and reduce ripple, dual-pump FOPAs, instead of single-pump FOPAs, have to be carefully optimized with a suitable multisegment fiber structure rather than a one-segment fiber structure. The different combinations of multisegment fibers can provide highly different gain properties. The increase in gain is at the cost of the ripple. © 2006 The Japan Society of Applied Physics.

Number of references:26

Main heading:Parametric amplifiers

Controlled terms:Fiber optics - Four wave mixing - Genetic algorithms - Modal analysis - Optical pumping - Optimization

Uncontrolled terms:Coupled-mode equations - Fiber-optical parametric amplifiers - Gain properties - Multimodal function optimization problems

Classification code:711.1 Electromagnetic Waves in Different Media - 713.1 Amplifiers - 723 Computer Software, Data Handling and Applications - 741.1.2 Fiber Optics - 921.5 Optimization Techniques

Treatment:Theoretical (THR)

DOI:10.1143/JJAP.45.4074

Database:Compendex

Accession number:2006209874844

Title:Fabrication of microstructured polymer optical fiber preform

Authors:Zhang, Yani (1); Wanga, Lili (3); Rena, Liyong (3); Lia, Tonghai (3); Wanga, Xuezhong (3); Zhaoa, Wei (3); Miaob, Runcai (3)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, CAS, Xi'an, 710068, China; (2) Institute of Physics and Information Technology, Shaanxi Normal University, Xi'an, 710062, China; (3) Department of Physics, Baoji College of Arts and Science, Baoji, Shaanxi, 721007, 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:6149

Volume title:2nd International Symposium on Advanced Optical Manufacturing and Testing Technologies - Advanced Optical Manufacturing and Testing Technologies

Issue date:2006

Publication year:2006

Article number:61491Y

Language:English

ISSN:0277786X

CODEN:PSISDG

ISBN-10:0819461881

ISBN-13:9780819461889

Document type:Conference article (CA)

Conference name:2nd International Symposium on Advanced Optical Manufacturing and Testing Technologies - Advanced Optical Manufacturing and Testing Technologies

Conference date:November 2, 2005 - November 5, 2005

Conference location:Xian, China

Conference code:67254

Sponsor:Chinese Optical Society, COS, China; The Institute of Optics and Electronics, CAS, China; SPIE

Publisher:SPIE

Abstract:We report a new technology to fabricate microstructured polymer optical fiber (MPOF, also named polymer photonic crystal fiber, pPCF) preform rods by in-situ polymerization of monomer in a mould. Series of pPCF preform rods including elliptic core fiber preform rod, single-mode fiber preform rod and ring-type holes structured preform rods have been fabricated. The optimum conditions for monomer-based fabrication of pPCF preform rods were investigated. Then, drawing from primary preform rods to secondary preform rods was carried out in a home-made furnace. Finally, optical and thermal properties of these pPCF preform rods, such as transmittance, a glass transition temperature, and the distribution of molecular weight were investigated. Optically functional dye-doped pPCF preform rods, rhodamines-doped PMMA preform rods were successfully fabricated.

Number of references:11

Main heading:Optical fibers

Controlled terms:Furnaces - Glass transition - Microstructure - Molecular weight - Monomers - Polymerization - Polymers

Uncontrolled terms:Fiber design and fabrication - Home-made furnace - Microstructured fabrication - Photonic crystal fiber

Classification code:931.3 Atomic and Molecular Physics - 815.2 Polymerization - 815.1 Polymeric Materials - 933 Solid State Physics - 804 Chemical Products Generally - 741.1.2 Fiber Optics - 532 Metallurgical Furnaces - 802.3 Chemical Operations

Treatment:Theoretical (THR); Experimental (EXP)

DOI:10.1117/12.674260

Database:Compendex

Accession number:20064610240405

Title:Fabrication of doped polymer microlens array using drop-on-demand technology

Authors:Li, Tong-Hai (0); Hu, Bao-Wen (0); Jiao, Guo-Hua (0); Wang, Li-Li (0); Li, Yu-Lin (0)

Corresponding author:Li, T.-H.(litonghai2000@163.com)

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

Source title:Guangdian Gongcheng/Opto-Electronic Engineering

Abbreviated source title:Guangdian Gongcheng

Volume:33

Issue:9

Issue date:September 2006

Publication year:2006

Pages:48-51+105

Language:Chinese

ISSN:1003501X

CODEN:GUGOEC

Document type:Journal article (JA)

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

Abstract:The Rhodamine 6 G doped microlens array was fabricated using the solution of methyl methacrylate (MMA) monomer and polymethyl methacrylate (PMMA) mixture. And the optical character of the microlens arrays such as focal length uniformity, imaging effect, surface roughness, the transmittance spectrum and fluoresce spectrum et al has been tested. The non-uniformity is less than 1.8%. The error of the tested value and theory value is no more than 1.7%. The surface roughness Ra is less than 0.9 nm after the surface heat processing at high temperature. The optical transmittance of microlens is very high (> 90%) for visible and Near Infrared (NIR) wavelength, and can be used as fiber amplifier and optical fiber bio-chemical sensor.

Number of references:8

Database:Compendex

Accession number:20070710428059

Title:Design of an ultra-fast electron diffraction system

Authors:Wu, Jianjun (0); Tian, Jinshou (0); Wang, Junfeng (0); Zou, Wei (0); Sai, Xiaofeng (0); Zhao, Baosheng (0); Liu, Yunquan (0); Liang, Wenxi (0); Zhang, Jie (0)

Corresponding author:Wu, J.(jjwu@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:35

Issue:12

Issue date:December 2006

Publication year:2006

Pages:1827-1831

Language:English

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, China

Abstract:The designed electron diffraction system consists of an ultra-fast electron gun, a sample chamber, a readout system, a power supply system, and a vacuum system, and it bears such unique characteristics as high energy, high temporal resolution, and high detection capacity. The photocathode is of a 35 nm Ag film deposited on an MgF2 glass disk, and it is sensitive to ultraviolet light with wavelength of 266 nm. A magnetic lens is used to focus the electrons. Two pairs of electric deflection plates are used in the X and Y directions respectively to control the movement of the electrons, and one pair of them will act as a scanning plate while measuring the pulse width of electrons. The sample chamber is made of stainless steel, and in the middle of the chamber there is a specimen holder, capable of shifting in three dimensions and turning around its axis. The diffraction pattern recording system has a very high detecting efficiency, and even a single electron could be detected. A cascade MCP detector is used to ensure an electron gain reached to 104. The electron gun is in a vacuum system of 10-4 Pa. The whole gun is shielded by a μ-metal sheath. The designed temporal resolution of the ultra-fast electron diffraction system (UED) is about 358 fs.

Number of references:19

Database:Compendex

Accession number:2006169825705

Title:Micro-optic lenses fabrication and applications

Authors:Li, Yulin (1); Jiao, Guohua (1); Li, Tonghai (1); Hu, Baowen (1); Huo, Junmin (1); Wang, Lily (1)

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

Corresponding author:Li, Y.(liyu@opt.ac.cn)

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

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:6038

Monograph title:Photonics: Design, Technology, and Packaging II

Issue date:2006

Publication year:2006

Article number:603819

Language:English

ISSN:0277786X

CODEN:PSISDG

ISBN-10:0819460699

ISBN-13:9780819460691

Document type:Conference article (CA)

Conference name:Photonics: Design, Technology, and Packaging II

Conference date:December 12, 2005 - December 14, 2005

Conference location:Brisbane, Australia

Conference code:67026

Sponsor:SPIE; Queensland University of Technology, Australia; Air Force Office of Scientific Research AOARD, Japan; Defence Science and Technology Organisation, Australia

Publisher:SPIE

Abstract:The gradient index (GRIN) inhomogeneous materials optical glass micro-lens and polymer microlens and arrays were investigated in our Lab, in recent years. The different series of GRIN lenses have been fabricated using ion-exchanged in the special glass material. The GRIN lenses are done in applications for using to construct micro-optic devices. We analyzed and demonstrated results on propagation and imaging properties of GRIN lenses. On the other hand, we have also developed a drop-on-demand ink-jet printing method to produce micro-lens array using nano-scale polymer droplets involved with a uniform ultraviolet (UV) light and heat solidifying process. The experimental setup for manufacturing polymer microlens array and the measurement results of performance parameter are also given.

Number of references:11

Main heading:Gradient index optics

Controlled terms:Arrays - Glass - Ion exchange - Lenses - Solidification

Uncontrolled terms:Gradient index material - Micro-jet printing - Micro-optics lens - Micro-structure optical device

Classification code:702.3 Solar Cells - 741.1 Light/Optics - 741.3 Optical Devices and Systems - 802.2 Chemical Reactions - 802.3 Chemical Operations - 812.3 Glass

Treatment:Theoretical (THR)

DOI:10.1117/12.638384

Database:Compendex

Accession number:20070110349559

Title:The laser shaft alignment system with dual PSDs

Authors:Jiao, Guohua (0); Li, Yulin (0); Zhang, Dongbo (0); Li, Tonghai (0); Hu, Baowen (0)

Corresponding author:Jiao, G.(ghjiao@opt.ac.cn)

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

Source title:Wuhan Ligong Daxue Xuebao/Journal of Wuhan University of Technology

Abbreviated source title:Wuhan Ligong Daxue Xuebao

Volume:28

Issue:SUPPL. 1

Issue date:November 2006

Publication year:2006

Pages:107-111

Language:English

ISSN:16714431

Document type:Journal article (JA)

Publisher:Wuhan University of Technology, Wuhan, China

Abstract:Shaft alignment is an important technique during installation and maintenance of a rotating machine. A high-precision laser alignment system has been designed with dual PSDs (Position Sensing Detector) to change traditional manual way of shaft alignment and to make the measurement easier and more accurate. The system is comprised of two small measuring units (laser transmitter and detector) and a PDA (Personal Digital Assistant) with the measurement software. The laser alignment system with dual PSDs was improved on a single PSD system, and it gets higher measurement accuracy than the previous design, and it has been succeeded in designing and implement for actual shaft alignment. In the system, the range of offset measurement is ± 4 mm, and the resolution is 1.5 μm, and the accuracy is less than 2 μm.

Number of references:12

Database:Compendex

Accession number:20064210187813

Title:Structural characteristics induced by nanosecond, picosecond, and femtosecond laser pulse in sapphire

Authors:Cheng, Guanghua (0); Wang, Yishan (0); Zhao, Wei (0); Chen, Guofu (0); Liu, Qing (0)

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:35

Issue:8

Issue date:August 2006

Publication year:2006

Pages:1121-1125

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, China

Abstract:The damage threshold and morphology of sapphire crystal (0001) have been investigated by nanosecond (ns), picosecond (ps), and femtosecond (fs) laser pulse at 800 nm based on the mechanical, thermal, and photon-electrical properties of sapphire crystal. The star-like crack which is associated with the point group of sapphire crystal is induced by ns laser pulse, and the cross crack is induced by ps laser pulse and linelike crack is induced by fs laser pulse, which may be related to the preferred dislocation from anisotropic stain tensor.

Number of references:17

Database:Compendex

Accession number:20070110340142

Title:High-speed and high-voltage electrical pulse generation for electro-optical switch

Authors:Shi, Liyong (0); Liu, Baiyu (0); Ouyang, Xian (0); Bai, Yonglin (0); Hang, Hai (0); Wang, Chen (0)

Corresponding author:Shi, L.(picosecond@126.com)

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:35

Issue:10

Issue date:October 2006

Publication year:2006

Pages:1501-1504

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, China

Abstract:The authors have developed avalanche transistors based pulser for use as an electro-optical switch driver. These transistors are mounted on microwave structure board. The circuit can generate an electrical pulse with peak voltage of 6. 4 kV, peak current of 128A, voltage amplitude of 5 kV, fall time of 990 ps, in 50Ω load. The trig jitter is less than ±15 ps;, and the trig delay is about 30 ns.

Number of references:13

Database:Compendex

Accession number:2006139787793

Title:Analysis of the throughput of onboard polarization interference imaging spectrometer

Authors:Zhang, Chunmin (1); Zhao, Baochang (2); Yuan, Yan (2); He, Jian (1)

Author affiliation:(1) 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.

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

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:6032

Monograph title:ICO20: MEMS, MOEMS, and NEMS

Issue date:2006

Publication year:2006

Article number:60320T

Language:English

ISSN:0277786X

CODEN:PSISDG

Document type:Conference article (CA)

Conference name:ICO20: MEMS, MOEMS, and NEMS

Conference date:August 21, 2005 - August 26, 2005

Conference location:Changchun, China

Conference code:66939

Publisher:SPIE

Abstract:The mechanism of beam shearing splitting and principle of the interfering imaging of the self-developed onboard Polarization Interference Imaging Spectrometer (PUS) were expounded in this paper. The throughput of PIIS is analyzed. The relation of the throughput with the angle of the polarized orientation of the polarizer to the ideal direction is derived. This Polarization Interference Imaging Spectrometer has the merit of simple structure, no moving parts, and high throughput. Because of its unique advantage of static, compact in size, wide field of view, it is applicable for the aviation, spaceflight, remote sensing, fieldwork or weak signal detection.

Number of references:16

Main heading:Spectrometers

Controlled terms:Light polarization - Optical beam splitters - Remote sensing - Signal detection - Space applications - Throughput

Uncontrolled terms:High throughput - Onboard Polarization Interference Imaging Spectrometer - Polarized Orientation - Static - Wide field of View

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

Treatment:Theoretical (THR)

DOI:10.1117/12.667886

Database:Compendex

Accession number:20070710428068

Title:Some aspects of the data processing of the single sided interferogram

Authors:Xiangli, Bin (0); Yuan, Yan (0)

Corresponding author:Xiangli, B.(xiangli@ms.xab.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:35

Issue:12

Issue date:December 2006

Publication year:2006

Pages:1869-1874

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, China

Abstract:There are two types of the interferogram of spatially modulated imaging Fourier transform spectrometer (SMIFTS), namely single sided and double sided. In the case of single sided interferogram there are usually a small portion of sampling points around the zero path difference (ZPD) for phase correction. In this paper, some aspects of data processing of the single sided interferogram are discussed in detail including apodization and phase correction. A novel weighting and apodization method is proposed and better recovered spectra are obtained by computer simulation. It is found that under adequate conditions, the reconstructed spectra from single sided interferogram are good enough for application mean while the raw data rate is smaller than double sided sampling.

Number of references:15

Database:Compendex

Accession number:2006259949785

Title:A new lateral shearing interferometer stationary Fourier transform spectrometer of high spectrum resolution resolving power

Authors:Su, Lijuan (0); Xiang, Libin (0); Yuan, Yan (0)

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:35

Issue:5

Issue date:May 2006

Publication year:2006

Pages:684-687

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, China

Abstract:A new lateral shearing beam-splitter based on a new method to split light is proposed. The principle of its structure is elaborated and analyzed, and the results of its application in FTS have been discussed. When the structures of beam-splitters are in the same size, this structure can generate ten times of the spacing more than that generated by others. When it is applied to FTS, the FTS can reach high resolving power without increasing the size of the structure and the weight of it. There is no light to return to the source when the beam-splitter splits the light, so the energy of light in this method would be almost twice of that of the Sagnac method. Furthermore, compared with the Mach-Zehnder method, the realization of this method is easier. Its structure is compact and stable, so it can be used in the domains such as aviation, astronautics remote and sensing, and also work well in the material ingredient analysis field.

Number of references:10

Database:Compendex

Accession number:2006139793301

Title:Two methods for CCD camera's image center measurement

Authors:Feng, Wang (1); Jianzhong, Cao (1); Yongxing, Zou (1); Renkui, Zhou (1); Xiujuan, Luo (1)

Author affiliation:(1) Xi'An Institute of Optics and Precision Mechanics, CAS, Xi'an, 710068, China; (2) Graduate School, Chinese Academy of Sciences, Beijing, 100039, China

Corresponding author:Feng, W.

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

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:6150 II

Monograph title:2nd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment

Issue date:2006

Publication year:2006

Article number:61504O

Language:English

ISSN:0277786X

CODEN:PSISDG

Document type:Conference article (CA)

Conference name:2nd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment

Conference date:November 2, 2005 - November 5, 2005

Conference location:Zian, China

Conference code:66958

Sponsor:Chinese Optical Society, COS, China; Institute of Optics and Electronics, CAS, China

Publisher:SPIE

Abstract:Practical application of two types of method for CCD camera's image center measurement is researched. With regard to image center, pixels' distribution to image plane is still symmetrical even under the influence of lens distortion. Based on this, with direct optical method, the image center is determined by the symmetry of pixels' position in vertical and horizontal directions on image plane. With lens distortion based perspective projection method, a complete imaging model is built and image center is a key element of the model. Two kinds of main lens distortion are considered in the model. Test is carried out and the comparison is made for two methods. The second method's strong convergence property is verified.

Number of references:7

Main heading:Image analysis

Controlled terms:Aberrations - Calibration - Camera lenses - Cameras - Charge coupled devices - Distortion (waves) - Projection systems

Uncontrolled terms:Camera calibration - Camera parameters - Image center - Lens distortion - Perspective projection

Classification code:711.1 Electromagnetic Waves in Different Media - 714.2 Semiconductor Devices and Integrated Circuits - 723.2 Data Processing and Image Processing - 741 Light, Optics and Optical Devices - 742.2 Photographic Equipment - 902.2 Codes and Standards

Treatment:Applications (APP); Theoretical (THR)

DOI:10.1117/12.676678

Database:Compendex

Accession number:2006209882242

Title:High power Yb3+-doped double-clad fiber laser with improved F-B cavity

Authors:Li, Kang (1); Zhao, Wei (1); Wang, Yi-Shan (1); Chen, Guo-Fu (1); Dong, Shu-Fu (1)

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

Source title:Guangdianzi Jiguang/Journal of Optoelectronics Laser

Abbreviated source title:Guangdianzi Jiguang

Volume:17

Issue:3

Issue date:March 2006

Publication year:2006

Pages:302-305

Language:Chinese

ISSN:10050086

CODEN:GUJIE9

Document type:Journal article (JA)

Publisher:Board of Optronics Lasers

Abstract:A high power Yb3+-doped double-cladding fiber laser with improved F-P laser cavity is studied in experiments. There is no obvious difference in optical-to-optical conversion efficiency of the whole system using this laser cavity in experiment, but there are obvious improvements in the ability of high power laser damage resistance. CW output power of 50 W with the wavelength at 1.06 mm is obtained without any thermo-optical problems, dichroic mirror surface damage or drop of the slope efficiency. The slope efficiency and the optical-to-optical conversion efficiency of laser output are 80.2% with respect to absorbed pump power and 31.9% with respect to total pump power respectively.

Number of references:10

Main heading:High power lasers

Controlled terms:Efficiency - Fiber lasers - Laser damage - Optical fibers - Pumping (laser) - Rare earth additions - Ytterbium

Uncontrolled terms:Cladding pump - Conversion efficiency - Dichroic mirror surface damage - Double clad fibers - F P laser cavity - High power laser damage resistance - Optical fiber laser - Output power - Pump power - Slope efficiency - Thermooptical problems

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

Treatment:Experimental (EXP)

Database:Compendex

Accession number:2006199864974

Title:Interference image spectroscopy for upper atmospheric wind field measurement

Authors:Zhang, Chunmin (1); Zhao, Baochang (2); Xiangli, Bin (2); Li, Yingcai (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:Optik

Abbreviated source title:Optik

Volume:117

Issue:6

Issue date:June 6, 2006

Publication year:2006

Pages:265-270

Language:English

ISSN:00304026

Document type:Journal article (JA)

Publisher:Urban und Fischer Verlag Jena

Abstract:Based on the observation of natural airglow and auroral visible emission lines in the upper atmosphere as the explored source, we have surveyed the upper atmosphere wind field through interference imaging spectroscopy coupled with the Doppler effect of electrical and magnetic waves. The velocity and temperature of the upper atmospheric wind field are analyzed and studied. The survey theory and calculation formula of atmosphere wind field in all directions and multi-directions are presented when the relative velocity of the explored source to the detector and their linking line have an arbitrary angle. We also analyzed the effects of the measurement of the upper atmospheric wind field using computer simulation, and explained the reason why the auroral emission line is thought as Gaussian profile. © 2005 Elsevier GmbH. All rights reserved.

Number of references:15

Main heading:Image processing

Controlled terms:Atmospheric optics - Computer simulation - Doppler effect - Electric fields - Magnetic fields - Wind

Uncontrolled terms:Emission lines - Interference imaging spectroscopy - Upper atmospheric wind field

Classification code:741.1 Light/Optics - 723.5 Computer Applications - 723.2 Data Processing and Image Processing - 711.1 Electromagnetic Waves in Different Media - 701.2 Magnetism: Basic Concepts and Phenomena - 701.1 Electricity: Basic Concepts and Phenomena - 443.1 Atmospheric Properties

Treatment:Theoretical (THR)

DOI:10.1016/j.ijleo.2005.08.022

Database:Compendex

Accession number:20071110488397

Title:Image matching algorithm with high precision

Authors:Wang, Zhao-Zhong (1); Zhou, Fu-Gen (1); Liu, Zhi-Fang (1); Yang, Jian-Feng (2)

Author affiliation:(1) Image Processing Center, Beihang University, Beijing 100083, China; (2) Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710068, China

Corresponding author:Wang, Z.-Z.(zwang@buaa.edu.cn)

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

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

Volume:35

Issue:6

Issue date:December 2006

Publication year:2006

Pages:751-755

Language:Chinese

ISSN:10072276

Document type:Journal article (JA)

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

Abstract:A novel algorithm for image matching with high accuracy is proposed to achieve the requirement of spectrum restoration based on optical flow computation. This matching algorithm overcomes the defects of traditional image matching algorithm based on gray matching, which are affected by interpolation accuracy,and breaks the conflict between operation speed and accuracy. Experiments on real hyper -spectral image sequences show that our method is not only effective both in efficiency and accuracy, but also more suitable for the hardware realization compared with MAD block matching algorithm and normalized correlation coefficient block matching algorithm.

Number of references:10

Main heading:Image matching

Controlled terms:Algorithms - Computer hardware - Image quality - Infrared radiation - Motion estimation - Optimization

Uncontrolled terms:Correlation coefficient - Hyper-spectral images - Optical flow computation - Spectrum restoration

Classification code:716.1 Information Theory and Signal Processing - 722 Computer Systems and Equipment - 723.2 Data Processing and Image Processing - 741 Light, Optics and Optical Devices - 921.5 Optimization Techniques

Treatment:Theoretical (THR)

Database:Compendex

Accession number:20064610240487

Title:Chemistry fabrication of polymer photonic crystal fibers with high polarization maintaining properties

Authors:Zhang, Yani (0); Wang, Lili (0); Ren, Liyong (0); Wang, Xuezhong (0); Zhao, Wei (0); Miao, Runcai (0)

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

Corr. author affiliation:State key Laboratory of Transient Optics and Photonic, 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:35

Issue:9

Issue date:September 2006

Publication year:2006

Pages:1348-1353

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, China

Abstract:The in-situ chemical preparation technology has been explored for the first time for large size high polarization polymer photonic crystal fibers (pPCFs) preforms. The optimal polymerization conditions have been investigated. From experiments of the secondary draw-stretching of the preforms and the measured results such as microstructure, transmittance, glass transition temperature (Tg), molecular weight and so on, it is found that these preforms have a lot of characteristics, i.e. steady mechanics structure, higher optical transparency, and the pPCFs made by these preforms have ideally microstructure retaining, less holes collapse-rate, and lower non-intrinsic loss. If laser dyes and rare earth chelates were mixed into reaction system, the high polarization pPCFs preforms with fluorescence can be gained, which will be a new materials for development of the polarization maintaining PCF lasers.

Number of references:13

Database:Compendex

Accession number:2006139784368

Title:Approach of extracting reliable feature points for image matching

Authors:Jiao, Yulong (0); Luo, Xiujuan (0); Ma, Jiankang (0)

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:35

Issue:2

Issue date:February 2006

Publication year:2006

Pages:312-315

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, China

Abstract:An approach of extracting reliable feature points alone ridges/troughs is presented. The feature points include high curvature points along ridge/trough, cross points of ridges/troughs and minimum points in image surface. Experimental result shows that the approach is more robust as compared with the traditional approach of extracting feature points along step edges and reduce the possibility of the appearance of outliers. Scanning the image for just one time will get the points along ridges/troughs, but computing the cross points of ridges/troughs and the high curvature points along ridge/trough will cost more time. So this approach is available for applications that require only a small set of highly reliable feature points.

Number of references:15

Database:Compendex

Accession number:2006139784328

Title:Explanation of Bessel-like beam from axiom with three-beam interference model

Authors:Lei, Ming (0); Yao, Baoli (0)

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:35

Issue:1

Issue date:January 2006

Publication year:2006

Pages:146-148

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, China

Abstract:A model of three-beam interference has been set up to explain the observed beam patterns which are generated by Gaussian beam passing through an axicon. The mathematical simulation is based on interferential theory, and the effect of the vertex of the axicon. is also considered. The derived equation for describing the transverse intensity distribution gives good approximation to the experimental result as well as the zero-order Bessel function. This beam is characteristic of non-diffraction and can be used to study the newly-type optical tweezers.

Number of references:11

Database:Compendex

Accession number:2006129773255

Title:Fast extraction iso-surface in RLE coded volume

Authors:Liu, Tai-Hui (0); Song, Jian-Zhong (0); Han, Guang-Liang (0)

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:32

Issue:1

Issue date:January 2006

Publication year:2006

Pages:14-16

Language:Chinese

ISSN:10021582

CODEN:GJISEP

Document type:Journal article (JA)

Publisher:Optical Technique, Beijing, China

Abstract:A fast iso-surface extraction method was presented in an optimized RLE compression from shear-Warp algorithm. This new method has not any lose of resolution. And the rendering speed has been improved much. This algorithm has been used in our project on the PC system. A real time rendering speed is achieved without any hardware accelerator adapter.

Number of references:9

Database:Compendex

Accession number:2006229912669

Title:Effect of growth temperature on the properties of ZnO thin films prepared by laser molecular beam epitaxy

Authors:Xu, Qing-An (0); Zhang, Jing-Wen (0); Yang, Xiao-Dong (0); Ju, Kai-Ru (0); He, Yong-Ning (0); Hou, Xun (0)

Corresponding author:Xu, Q.-A.(lzuxqan@163.com)

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:Rengong Jingti Xuebao/Journal of Synthetic Crystals

Abbreviated source title:Rengong Jingti Xuebao

Volume:35

Issue:2

Issue date:April 2006

Publication year:2006

Pages:248-252

Language:Chinese

ISSN:1000985X

CODEN:RJXUEN

Document type:Journal article (JA)

Publisher:Chinese Ceramic Society, Beijing, China

Abstract:C-axis highly oriented ZnO thin films were prepared on C-plane sapphire substrates by laser molecular beam epitaxy(L-MBE) at the growth temperatures of 250°C;,300°C,350°C,400°C and 450°C. X-ray diffraction(XRD), photoluminescence(PL) spectra were used to analyze the crystalline and optical properties of the films. All measurement results show that the crystalline and optical properties of the films are improved with increase of growth temperature at lower temperature, and decrease when the growth temperature is above 350°C. This phenomenon indicates that there is a growth temperature range in the process of ZnO thin films growth by L-MBE. The reason for this phenomenon is also discussed.

Number of references:20

Database:Compendex

Accession number:20070710428090

Title:Coding and decoding theory of virtual absolute encoder

Authors:Hu, Xiaodong (0); Guo, Liang (0); Wu, Wenming (0); Zhu, Lifeng (0); Che, Rong (0)

Corresponding author:Hu, X.(authenticggll@gmail.com)

Corr. author affiliation:Laboratory of Measuring and Controlling Moving Target, 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:35

Issue:12

Issue date:December 2006

Publication year:2006

Pages:1980-1983

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, China

Abstract:Optical encoder is the important sensor used for length and angle measurement. A new type optical encoder: virtual absolute encoder has inherited the advantage of the two old traditional ones. The principle of virtual absolute encoder has been introduced. A practical coding algorithm was designed according to the characters of the slit disk. The code design of indexing track highest to 17 bits comes true with the aid of computer aided design (CAD). A method to decode was also developed, which can convert the binary cyclic code into binary natural code, and this method furnishes the further engineering practice with the theoretical foundation.

Number of references:7

Database:Compendex

Accession number:20063510092649

Title:Characteristics of the tracer particles used in water flow field for PIV system

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

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:Shiyan Liuti Lixue/Journal of Experiments in Fluid Mechanics

Abbreviated source title:Shiyan Liuti Lixue

Volume:20

Issue:2

Issue date:June 2006

Publication year:2006

Pages:72-77

Language:Chinese

ISSN:16729897

Document type:Journal article (JA)

Publisher:Zhongguo Kongqi Dongli Yanjiu yu Fazhan Zhongxin, Mianyang, China

Abstract:As a novel flow measurement technology, particle image velocimetry (PIV) system is introduced, which is used in water flow field display and measurement. Such a PIV system takes pictures of tracer particles twice or more and uses software processing the particle images to get the flow field information. So the characteristics of the particle such as its density, diameter and reflectivity are important to improve the PIV detecting precision. By analyzing these characteristics of tracer particles, polystyrene particle, 100~200 μm, is chosen as the tracer particle for water flow field. Silver coating is formed on the surface of the particles by chemical method to increase the reflectivity. The experiment results show that such a tracer particle is very suitable for water flow field tracing.

Number of references:10

Database:Compendex

Accession number:20063810125971

Title:Research on a solid state-streak camera based on an electro-optic crystal

Authors:Chen, Wang (1); Baiyu, Liu (1); Yonglin, Bai (1); Xiaohong, Bai (1); Jinshou, Tian (1); Wenzheng, Yang (1); Xian, Ouyang (1)

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

Corresponding author:Chen, W.

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

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:6344 I

Monograph title:Advanced Laser Technologies 2005

Issue date:2006

Publication year:2006

Article number:63440B

Language:English

ISSN:0277786X

CODEN:PSISDG

ISBN-10:0819464201

ISBN-13:9780819464200

Document type:Conference article (CA)

Conference name:Advanced Laser Technologies 2005

Conference date:September 3, 2005 - September 6, 2005

Conference location:Tianjin, China

Conference code:68108

Publisher:SPIE

Abstract:With excellent temporal resolution ranging from nanosecond to sub-picoseconds, a streak camera is widely utilized in measuring ultrafast light phenomena, such as detecting synchrotron radiation, examining inertial confinement fusion target, and making measurements of laser-induced discharge. In combination with appropriate optics or spectroscope, the streak camera delivers intensity vs. position (or wavelength) information on the ultrafast process. The current streak camera is based on a sweep electric pulse and an image converting tube with a wavelength-sensitive photocathode ranging from the x-ray to near infrared region. This kind of streak camera is comparatively costly and complex. This paper describes the design and performance of a new-style streak camera based on an electro-optic crystal with large electro-optic coefficient. Crystal streak camera accomplishes the goal of time resolution by direct photon beam deflection using the electro-optic effect which can replace the current streak camera from the visible to near infrared region. After computer-aided simulation, we design a crystal streak camera which has the potential of time resolution between 1ns and 10ns. Some further improvements in sweep electric circuits, a crystal with a larger electro-optic coefficient, for example LN (γ<inf>33</inf> = 33.6 × 10-12 m/v) and the optimal optic system may lead to better time resolution less than 1ns.

Number of references:9

Main heading:Solid state devices

Controlled terms:Computer aided analysis - Crystal structure - Electrooptical effects - Laser fusion - Optical systems - Streak cameras - Synchrotron radiation

Uncontrolled terms:Electrooptic coefficient - Laser induced discharges - Picosecond time resolution - Ultrafast light phenomena

Classification code:932.2.1 Fission and Fusion Reactions - 932.1.1 Particle Accelerators - 744.9 Laser Applications - 742.2 Photographic Equipment - 933.1.1 Crystal Lattice - 741.3 Optical Devices and Systems - 723.5 Computer Applications - 714.2 Semiconductor Devices and Integrated Circuits - 701.1 Electricity: Basic Concepts and Phenomena - 741.1 Light/Optics

Treatment:Theoretical (THR)

DOI:10.1117/12.693428

Database:Compendex

Accession number:20064010143225

Title:Lateral displacement and its mechanism in asymmetric layered configuration

Authors:Zhou, Hui-Ling (1); Chen, Xi (2); Li, Chun-Fang (1)

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

Source title:Journal of Modern Optics

Abbreviated source title:J. Mod. Opt.

Volume:53

Issue:15

Issue date:October 15, 2006

Publication year:2006

Pages:2153-2165

Language:English

ISSN:09500340

E-ISSN:13623044

CODEN:JMOPEW

Document type:Journal article (JA)

Publisher:Taylor and Francis Ltd.

Abstract:Lateral displacement and its mechanism in asymmetric layered configuration are investigated. It is shown by the stationary-phase approach that displacements of both the transmitted and reflected beams can be positive as well as negative, and their magnitude can be greatly enhanced at transmission resonances. Numerical simulations show that for a well-collimated incident beam, if the norms of transmission and reflection coefficients are approximately constant within the peak of the angular-spectrum distribution of the beam, the transmitted and reflected beams can undergo lateral displacement without distortion, as long as the thickness of the layer satisfies a restriction. It is concluded that lateral displacement is not caused by beam distortion, but the result of reshaping the multiply transmitted (or reflected) beams.

Number of references:23

Main heading:Optical systems

Controlled terms:Computer simulation - Laser applications - Laser beams - Optical properties - Reflection - Resonance

Uncontrolled terms:Asymmetric layered configuration - Lateral displacement - Transmission resonances

Classification code:931.1 Mechanics - 744.9 Laser Applications - 744.8 Laser Beam Interactions - 741.3 Optical Devices and Systems - 741.1 Light/Optics - 723.5 Computer Applications - 711 Electromagnetic Waves

Treatment:Theoretical (THR)

DOI:10.1080/09500340600809244

Database:Compendex

Accession number:20063410083815

Title:Theoretical calculation of the modulation transfer function in a femto-second electron diffraction system

Authors:Tian, Jin-Shou (0); Zhao, Bao-Sheng (0); Wu, Jian-Jun (0); Zhao, Wei (0); Liu, Yun-Quan (0); Zhang, Jie (0)

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:55

Issue:7

Issue date:July 2006

Publication year:2006

Pages:3368-3374

Language:Chinese

ISSN:10003290

CODEN:WLHPAR

Document type:Journal article (JA)

Publisher:Science Press, Beijing, China

Abstract:This article has introduces the basic components and characteristics of a femto-second electron diffraction system, i.e. the photo-cathode, magnetic lens, deflector and detector with doubled MCP etc., and demonstrated our design method and results. The photo-cathode is an Ag film deposition on a sapphire disk and the femtosecond electron pulses are accelerated to 50 keV through an extraction electric field of 10 kV/mm between the photocathode and the extraction mesh. After extraction, the electron pulses are reshaped in size by a 100 μm pinhole, which screens out electrons with larger elevation angle and makes the passed electrons flying almost parallel to the axis, which results in a reduced electron beam spot. The beam is collimated with a magnetic lens and positioned to the sample by a pair of deflection plates for diffraction measurements. The electron diffraction images are recorded with a two-dimensional imaging system composed of a Chevron-type microchannel plate and a P20 phosphor screen on an optical-fiber faceplate. The initial position, kinetic energy and angle distribution of the photoelectrons are sampled with Monte Carlo method. The electric field is calculated with finite difference formula, and the magnetic flux of the focus region is calculated with finite elements methods, and the electron trajectory is traced with Runge-Kutta method. We analyzed the temporal and spatial distribution of 3000 electrons when they reached the prime plane and gave out the temporal and spatial modulation transfer function of the femto-second electron diffraction system.

Number of references:7

Database:Compendex

Accession number:20070110339810

Title:Thin-film enhanced Goos-Hanchen shift in frustrated total reflection configuration

Authors:Duan, Tao (1); Li, Chunfang (1); Yang, Xiaoyan (1); Zhang, Jiyue (1)

Author affiliation:(1) State Key Laboratory of Transient Optics Technology, Xi'an Institute of Optics and Precision Mechanics, Chinese Acad. of Sci., Xi'an 710068, China; (2) Department of Physics, Shanghai University, Shanghai 200444, China; (3) Graduate School, Chinese Acad. of Sci., Beijing 100039, China

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

Source title:Guangxue Xuebao/Acta Optica Sinica

Abbreviated source title:Guangxue Xuebao

Volume:26

Issue:11

Issue date:November 2006

Publication year:2006

Pages:1744-1748

Language:Chinese

ISSN:02532239

CODEN:GUXUDC

Document type:Journal article (JA)

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

Abstract:Goos-Hanchen (GH) shifts of reflected and transmitted wave beams in frustrated total reflection structure occur simultaneously. Commonly, GH shift of frustrated-total-reflection in symmetric double-prism configuration is only of the order of the wavelength. Its difficult to measure it in experiment. According to Maxwell equations, the complex expressions of reflection coefficient and transmission coefficient are presented when the incident angle is less than the critical angle of prism-film interface but larger than the critical angle of prism-air interface in the thin-film enhanced frustrated total reflection configuration. The GH shifts of reflected and transmitted wave beams are investigated by stationary-phase approach. The results show that the GH shifts of reflected and transmitted wave beams are equal and can be modulated by changing the incident angle and thickness of thin film and air gap. When the incident angle is less than, but close to the critical angle of prism-film interface, the magnitude of the shifts is enhanced by a factor of 102 with given thickness of thin film and air gap.

Number of references:19

Main heading:Thin films

Controlled terms:Interfaces (materials) - Maxwell equations - Physical optics - Reflection - Resonance

Uncontrolled terms:Finite sized light beam - Frustrated total reflection - Goos-Hanchen (GH) shifts - Reflection coefficient - Resonance enhancement - Stationary phase approach - Transmission coefficient

Classification code:741.1 Light/Optics - 921.2 Calculus - 931.1 Mechanics - 931.2 Physical Properties of Gases, Liquids and Solids

Treatment:Theoretical (THR)

Database:Compendex

Accession number:20064210186721

Title:Polarization holograms recording in photochromic diarylethenes polymeric film

Authors:Yao, Baoli (1); Wang, Yingli (1); Menke, Neimule (1); Lei, Ming (1); Ren, Liyong (1); Pu, Shouzhi (2)

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

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

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

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:6343 II

Monograph title:Photonics North 2006

Issue date:2006

Publication year:2006

Article number:63432Z

Language:English

ISSN:0277786X

CODEN:PSISDG

ISBN-10:0819464287

ISBN-13:9780819464286

Document type:Conference article (CA)

Conference name:Photonics North 2006

Conference date:June 5, 2006 - June 8, 2006

Conference location:Quebec City, QB, Canada

Conference code:68323

Sponsor:TeraXion, Canada; Developpement economique Canada, Canada; Quebec Dev't. economique, Innov. et Export., Canada; Societe Generale de Financement, Canada; ROBIC, Canada

Publisher:SPIE

Abstract:A diarylethene derivative, 1,2-bis[2-methyl-5-(3-fluorophenyl)-3-thienyl] perfluorocylcopentene, is synthesized and dispersed into PMMA to prepare a polymeric film. The film shows good color recycling between switching of irradiation of UV light and red light. Under the excitation of linear polarized light, an apparent characteristic of photoinduced anisotropy is observed in the diarylethene/PMMA film, which implies polarization modulation gratings can be recorded in this holographic medium apart from recording of intensity modulation gratings. We experimentally make a comparison among four types of polorization holograms recording for their reconstruction images, which shows that the orthogonal circular polarization hologram has both high signal-to-noise ratio and high diffraction efficiency. Based on the polarization gratings scheme, we demonstrate the polarization multiplexing holograms reocording and retrieval in the diarylethene/PMMA film and the combination with the angular multiplexing scheme.

Number of references:6

Main heading:Plastic films

Controlled terms:Anisotropy - Diffraction gratings - Holograms - Light polarization - Photochromism - Ultraviolet radiation

Uncontrolled terms:Diarylethene derivatives - Photoinduced anisotropy - Polarization multiplexing - Polorization holograms

Classification code:701.1 Electricity: Basic Concepts and Phenomena - 741.1 Light/Optics - 741.3 Optical Devices and Systems - 743 Holography - 817.1 Polymer Products - 931.2 Physical Properties of Gases, Liquids and Solids

Treatment:Theoretical (THR); Experimental (EXP)

DOI:10.1117/12.707733

Database:Compendex

Accession number:2006209874893

Title:An experimental study on the image quality loss of an objective caused by assemblage stress

Authors:Duan, Xueting (1); Bai, Jaguang (1); Zhou, Renkui (1)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, CAS, Xi'an, 710068; (2) Graduate School, Chinese Academy of Science, Beijing,100039

Corresponding author:Duan, X.

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

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:6149

Volume title:2nd International Symposium on Advanced Optical Manufacturing and Testing Technologies - Advanced Optical Manufacturing and Testing Technologies

Issue date:2006

Publication year:2006

Article number:61493D

Language:English

ISSN:0277786X

CODEN:PSISDG

ISBN-10:0819461881

ISBN-13:9780819461889

Document type:Conference article (CA)

Conference name:2nd International Symposium on Advanced Optical Manufacturing and Testing Technologies - Advanced Optical Manufacturing and Testing Technologies

Conference date:November 2, 2005 - November 5, 2005

Conference location:Xian, China

Conference code:67254

Sponsor:Chinese Optical Society, COS, China; The Institute of Optics and Electronics, CAS, China; SPIE

Publisher:SPIE

Abstract:Stress birefringence caused by assemblage stress can change the light through the glass into tow beams in different polarization mode, so the magnitude of the stress birefringence can be measured by a polarimeter. The Modulation Transfer Function (MTF) curve can be looked as the accurate result of image quality of an objective, in this article, we make an analysis of the correlation in theory, and list the result of the experiment. The MTF curve shows the obvious difference before the stress caused by assemblage was released and after. The stress caused by assemblage produces the additive wave aberration of the light. This additive wave aberration then cause the image quality loss of the objective. Measurement data indicates another objective as contrast has no stress in any of its units, so the MTF curve was almost the same as it was designed. The most serious loss of the image quality by assemblage stress is the falloff of the vertical curve and the horizontal curve of MTF, especially at the edge of the view field of the objective, and once the stress of the lens was released, this falloff disappears at the same time. So our conclusion is before an objective was assembled, each lens must be test by a polarimeter. If the stress can't be accepted, the stress should be released forwardly. And, this kind of test should also be implemented before the stickiness of each lens of the objective for the final image quality.

Number of references:4

Main heading:Image quality

Controlled terms:Birefringence - Correlation theory - Glass - Optical transfer function - Polarimeters - Polarization - Stress analysis - Wave effects

Uncontrolled terms:Assemblage stress - Measurement data - Optical assemblage - Stress birefringence

Classification code:941.3 Optical Instruments - 922.2 Mathematical Statistics - 812.3 Glass - 751.1 Acoustic Waves - 741.1 Light/Optics - 741 Light, Optics and Optical Devices - 711.1 Electromagnetic Waves in Different Media

Treatment:Theoretical (THR); Experimental (EXP)

DOI:10.1117/12.674349

Database:Compendex

Accession number:2006209880005

Title:Ultra-broadband optical parametric chirped-pulse amplification by matching of both group-velocity and pulse-front

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

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics Technology, Xi'an Institute of Optics and Precision Mechanics, Chinese Academic of Sciences, No. 322 You YiXilu Road, Xi'an, 710068, China

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

Source title:Optics Communications

Abbreviated source title:Opt Commun

Volume:261

Issue:1

Issue date:May 1, 2006

Publication year:2006

Pages:163-168

Language:English

ISSN:00304018

CODEN:OPCOB8

Document type:Journal article (JA)

Publisher:Elsevier

Abstract:Ultra-broadband optical parametric chirped-pulse amplification is analyzed based the compensation of phase-mismatch, which is achieved by matching of both group-velocity and pulse-front between signal and idler by the combination of the noncollinear-phase-match and pulse-front-tilt. The results show exactly matching of both group-velocity and pulse-front is the important criterion for constructing an UBOPCPA. Its general model is developed, in which the group velocities, noncollinear angles, spatial walk-off angles, linear angular spectral dispersion coefficients and pulse-front tilted angles are suitably linked to each other. Finally, specific numerical calculations and simulations are presented for β-barium borate OPCPA with type-I noncollinear angularly dispersed geometry. © 2005 Elsevier B.V. All rights reserved.

Number of references:20

Main heading:Optical communication

Controlled terms:Computer simulation - Electromagnetic dispersion - Geometry - Numerical methods - Spectrum analysis

Uncontrolled terms:Group-velocity - Noncollinear angles - Optical parametric chirped-pulse amplification - Pulse-front - Spatial walk-off angles

Classification code:711.1 Electromagnetic Waves in Different Media - 717.1 Optical Communication Systems - 723.5 Computer Applications - 921 Mathematics - 921.6 Numerical Methods

Treatment:Theoretical (THR)

DOI:10.1016/j.optcom.2005.11.065

Database:Compendex

Accession number:20074110856330

Title:Study of nonlinear magnification method based on Bezier transformation

Authors:Li, Ligang (1); Peng, Hailiang (1); Zhou, Qiang (1); Liu, Bo (2); Wu, Yirong (1); You, Hongjian (1); Huang, Yu (1)

Author affiliation:(1) Institute of Electronics, Chinese Academy of Sciences, National Key Laboratory of Microwave Imaging Technology, PO Box 2702, 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

Corresponding author:Li, L.

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

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

Monograph title:2006 IEEE International Geoscience and Remote Sensing Symposium, IGARSS

Issue date:2006

Publication year:2006

Pages:876-879

Article number:4241372

Language:English

CODEN:IGRSE3

ISBN-10:0780395107

ISBN-13:9780780395107

Document type:Conference article (CA)

Conference name:2006 IEEE International Geoscience and Remote Sensing Symposium, IGARSS

Conference date:July 31, 2006 - August 4, 2006

Conference location:Denver, CO, United states

Conference code:70348

Sponsor:IEEE Geoscience and Remote Sensing Society; Canadian Remote Sensing Society; National Aeronautics and Space Administration, NASA; National Oceanic and Atmospheric Administration; Office of Naval Research

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, a new nonlinear magnification method is proposed. The new method produces the effect of nonlinear magnification based on perspective projection and the Bezier curve is used as drop-off function. So the new method can enhance the local information and keep the global context It can provide different representation by adjusting the distortion degree of nonlinear magnification especially. In this way, image interpretation and target recognition would be performed effectively.

Number of references:4

Main heading:Nonlinear distortion

Controlled terms:Image analysis - Image quality - Information analysis - Projection systems - Radar target recognition

Uncontrolled terms:Bezier curves - Drop-off functions - Nonlinear magnification - Perspective projection

Classification code:716.1 Information Theory and Signal Processing - 716.2 Radar Systems and Equipment - 741 Light, Optics and Optical Devices - 742.2 Photographic Equipment - 903.1 Information Sources and Analysis

Treatment:Theoretical (THR)

DOI:10.1109/IGARSS.2006.225

Database:Compendex

Accession number:20063210056365

Title:Experimental study on angle multiplexing and polarization multiplexing holographic recording with bacteriorhodopsin film

Authors:Ren, Zhiwei (1); Yao, Baoli (1); Menke, Neimule (1); Wang, Yingli (1); Lei, Ming (1); Ren, Liyong (1); Chen, Guofu (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:Ren, Z.

Source title:Guangxue Xuebao/Acta Optica Sinica

Abbreviated source title:Guangxue Xuebao

Volume:26

Issue:6

Issue date:June 2006

Publication year:2006

Pages:822-826

Language:Chinese

ISSN:02532239

CODEN:GUXUDC

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:Holographic data storage is a key research direction in the optical data storage field due to its high storage density, high capacity and high speed of parallel data accessing. Bacteriorhodopsin (BR), a biologically photochromic material, is a new kind of re-writable holographic recording media. The feasibility of angle multiplexing and polarization multiplexing holographic recording with BR film is proved experimentally. Based on the photochromic property of BR, using 90° angle multiplexing scheme, six holograms are recorded in the BR-D96N film and the reconstructed images are respectively read out clearly without crosstalk. Based on the photoanisotropic property of BR, polarization multiplexing holographic recording in the BR-D96N film is presented. Two images with orthogonal polarizations are recorded as two different holograms at the same position, respectively, which can be selectively retrieved with the original reference beam as readout beam and the appropriate polarizer.

Number of references:16

Main heading:Optical data storage

Controlled terms:Crosstalk - Holograms - Image reconstruction - Multiplexing - Photochromism - Polarization - Recording - Thin films

Uncontrolled terms:Angle multiplexing - Bacteriorhodopsin (BR) - High storage density - Holographic recording - Holographic storage - Parallel data accessing - Photoanisotropy - Photochromic material - Polarization multiplexing - Thin film optics

Classification code:717 Optical Communication - 723.2 Data Processing and Image Processing - 741.1 Light/Optics - 741.3 Optical Devices and Systems - 743 Holography

Treatment:Experimental (EXP)

Database:Compendex

Accession number:2006069681490

Title:Fast and effective analysis methods for fiber Raman amplifiers

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.(liuxueming72@yahoo.com)

Source title:Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers

Abbreviated source title:Jpn J Appl Phys Part 1 Regul Pap Short Note Rev Pap

Volume:45

Issue:1 A

Issue date:January 10, 2006

Publication year:2006

Pages:121-127

Language:English

ISSN:00214922

E-ISSN:13474065

CODEN:JAPNDE

Document type:Journal article (JA)

Publisher:Japan Society of Applied Physics

Abstract:A series of new single-step methods and their corresponding algorithms with automatic step size adjustment for model equations of fiber Raman amplifiers are proposed and compared in this paper. On the basis of the Newton-Raphson method, multiple shooting algorithms for the two-point boundary value problems involved in solving Raman amplifier propagation equations are constructed. A verified example shows that, compared with the traditional Runge-Kutta methods, the proposed methods can increase the accuracy by more than two orders of magnitude under the same conditions. The simulations for Raman amplifier propagation equations demonstrate that our methods can increase the computing speed by more than 5 times, extend the step size significantly, and improve the stability in comparison with the Dormand-Prince method. The numerical results show that the combination of the multiple shooting algorithms and the proposed methods has the capacity to rapidly and effectively solve the model equations of multipump Raman amplifiers under various conditions such as co-, counter- and bi-directionally pumped schemes, as well as dual-order pumped schemes. © 2006 The Japan Society of Applied Physics.

Number of references:21

Main heading:Amplifiers (electronic)

Controlled terms:Algorithms - Boundary value problems - Mathematical models - Numerical analysis

Uncontrolled terms:Dormand-Prince method - Newton-Raphson method - Raman amplifiers

Classification code:713.1 Amplifiers - 723 Computer Software, Data Handling and Applications - 921 Mathematics - 921.6 Numerical Methods

Treatment:Theoretical (THR)

DOI:10.1143/JJAP.45.121

Database:Compendex

Accession number:2006109750965

Title:The characteristics of confined ablation in laser propulsion

Authors:Zhang, Jie (1); Zheng, Zhi-Yuan (1); Hao, Zuo-Qiang (1); Yuan, Xiao-Hui (1); Zhang, Zhe (1); Lu, Xin (1); Wang, Zhao-Hua (1); Wei, Zhi-Yi (1)

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

Source title:Chinese Physics

Abbreviated source title:Chin. Phys.

Volume:15

Issue:3

Issue date:March 1, 2006

Publication year:2006

Pages:580-584

Language:English

ISSN:10091963

E-ISSN:17414199

CODEN:CHPHF4

Document type:Journal article (JA)

Publisher:Institute of Physics Publishing

Abstract:Compared with direct ablation, confined ablation provides an effective way to obtain a large target momentum and a high coupling coefficient. By using a transparent glass layer to cover the target surface, the coupling coefficient is enhanced by an order of magnitude. With the increase of the gap width between the target surface and the cover layer, the coupling coefficient exponentially decreases. It is found that the coupling coefficient is also related to the thickness of the cover layer. © 2006 Chin. Phys. Soc. and IOP Publishing Ltd.

Number of references:12

Main heading:Pulsed laser deposition

Controlled terms:Glass - Magnetic couplings - Propulsion - Surface properties - Transparency

Uncontrolled terms:Confinement ablation - Gap width - High coupling coefficient - Laser plasmas

Classification code:653.1 Aircraft Engines, General - 701.2 Magnetism: Basic Concepts and Phenomena - 741.1 Light/Optics - 744.9 Laser Applications - 812.3 Glass - 931.2 Physical Properties of Gases, Liquids and Solids

Treatment:Theoretical (THR)

DOI:10.1088/1009-1963/15/3/023

Database:Compendex

Accession number:20063610101658

Title:Method of producing testing object in monitoring system of fiber optic taper coupled with TDI-CCD

Authors:Liu, Wei (0); Zhang, Boheng (0); Bian, Chuanping (0); Zhai, Xuefeng (0); Tian, Weijian (0); Bu, Jiangping (0)

Corr. author affiliation:Laboratory of Information and Photonics Technology, 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:35

Issue:7

Issue date:July 2006

Publication year:2006

Pages:1090-1094

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, China

Abstract:To provide an effective moving resolution stripes to be tested in fiber optic taper coupled with time delay and integration charge coupled devices (TDI-CCD), traditional push-broom imaging laboratory sets were analyzed, and the scheme of electronic object displayed cyclically on the screen was used as an improvement. Designing idea was tested by means of optical camera static imaging and TDI-CCD camera dynamic imaging. The problem that fine resolution patterns cannot display exactly on the screen of monitor or projector was resolved by taking full advantage of the stability of moving patterns produced by optical system and the facility of electronic system on control, display and real time processing. Compared with the traditional laboratory simulative sets of the dynamic push-broom imaging, the stability of stripes is improved, the mismatch between the speed of stripes and the line scanning rate of TDI-CCD was reduced. The scheme is not only convenient for coupling monitoring but also available for the image quality testing of the coupling system.

Number of references:11

Database:Compendex

Accession number:20083811559716

Title:Intersubband absorption in coupled double quantum wells driven by a strong terahertz field

Authors:Zhao, Wei (1); Zhang, Tong-Yi (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precise Mechanics, Chinese Academy of Science, 322 West Youyi Road, Xi'an, 710068, China

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

Source title:IRMMW-THz 2006 - 31st International Conference on Infrared and Millimeter Waves and 14th International Conference on Terahertz Electronics

Abbreviated source title:IRMMW-THz - Int. Conf. Infrared Millimeter Waves Int. Conf. Terahertz Electron.

Monograph title:IRMMW-THz 2006 - 31st International Conference on Infrared and Millimeter Waves and 14th International Conference on Terahertz Electronics

Issue date:2006

Publication year:2006

Pages:242

Article number:4222184

Language:English

ISBN-10:1424404002

ISBN-13:9781424404001

Document type:Conference article (CA)

Conference name:IRMMW-THz 2006 - 31st International Conference on Infrared and Millimeter Waves and 14th International Conference on Terahertz Electronics

Conference date:September 18, 2006 - September 22, 2006

Conference location:Shanghai, China

Conference code:73222

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

Abstract:The quasienergy ladders of a symmetric double quantum well driven by a terahertz (THz) field are nonperturbatively calculated within the Floquet theory. The dependence of the quasienergies on the intensity of the driving THz field is discussed. Avoided crossings and crossings of the quasienergies belonging to same and different parity classes are demonstrated. The weights of the THz sidebands of the intersubband transitions are also presented. The weights of the n-th sideband are symmetric between the different sets of the transitions with n positive and negative respectively, while the weights of the n-th sideband are asymmetric between the same sets of the transitions with n positive and negative n. ©2006 IEEE.

Number of references:3

Main heading:Semiconductor quantum wells

Controlled terms:Absorption - Differential equations - Electromagnetic waves - Millimeter wave devices - Millimeter waves - Turbulent flow

Uncontrolled terms:International conferences

Classification code:931.2 Physical Properties of Gases, Liquids and Solids - 921.2 Calculus - 802.3 Chemical Operations - 715 Electronic Equipment, General Purpose and Industrial - 714.2 Semiconductor Devices and Integrated Circuits - 714 Electronic Components and Tubes - 712.1 Semiconducting Materials - 711 Electromagnetic Waves - 631.1 Fluid Flow, General

DOI:10.1109/ICIMW.2006.368450

Database:Compendex

Accession number:2006139784335

Title:Study of the phosphor screen with the transparent conducting film

Authors:Bai, Xiaohong (0); Liu, Jinyuan (0); Bai, Yonglin (0); Liu, Baiyu (0); Liu, Xiuqin (0); Wang, Chen (0)

Corr. author affiliation:State Key Laboratory of Transient Optics and Photons 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:35

Issue:2

Issue date:February 2006

Publication year:2006

Pages:176-179

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, China

Abstract:A new type of phosphor screen is presented, in which the aluminum film is replaced by the transparent conducting film as electrode. When voltage is added in the electrode coated with transparent conducting film, the electric capability of this new type screen is much better than that used ones. And the X-ray imaging tube with this new type phosphor screen can obtain higher space resolution. Additionally, this technique also has some other virtues, such as more easier in operation, low cost and high rate of finished product.

Number of references:10

Database:Compendex

Accession number:20063210057647

Title:Effect of growth temperature on the properties of ZnO thin films prepared by L-MBE

Authors:Xu, Qing-An (0); Zhang, Jing-Wen (0); Yang, Xiao-Dong (0); Ju, Kai-Ru (0); He, Yong-Ning (0); Hou, Xun (0)

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:Bandaoti Guangdian/Semiconductor Optoelectronics

Abbreviated source title:Bandaoti Guangdian

Volume:27

Issue:3

Issue date:June 2006

Publication year:2006

Pages:289-293

Language:Chinese

ISSN:10015868

CODEN:BAGUE5

Document type:Journal article (JA)

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

Abstract:Highly oriented ZnO thin films were prepared on C-plane sapphire substrates by laser molecular beam epitaxy (L-MBE) at the growth temperature of 250,300,350,400 and 450°C. X ray diffraction, photoluminescence spectra and reflection high energy electron diffraction were employed to analyze the crystalline and optical properties of the films. All the measurement results show that the crystalline and optical properties of the films are improved with the rise of growth temperature, whereas deteriorated with growth temperature above 350°C. This phenomenon indicates that there is a adaptable growth temperature range in the process of ZnO thin films grown by L-MBE. The mechanism of this phenomenon is also discussed.

Number of references:16

Database:Compendex

Accession number:20070710428058

Title:Research of WSZ extreme ultraviolet detector and the data acquisition circuits

Authors:Wang, Guangming (0); Zhao, Baosheng (0); Wei, Peiyong (0); Zhu, Xiangping (0)

Corresponding author:Wang, G.(gmw126@126.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:35

Issue:12

Issue date:December 2006

Publication year:2006

Pages:1823-1826

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, China

Abstract:WSZ (Wedge-Strip and Zig) extreme ultraviolet (EUV) detector was designed by the charge division theory. Based on MCP and single photon imaging, the detector has original advantages on faint light detection. Three channels data acquisition circuits were designed to detect pulses with 100-200 ms widths and 1-20 pC total charges. The circuits were tested under vacuum condition and electron pulses proportionate to the acreages of the anodes with noises less than 10 mV are gathered and processed. It is reasoned to expect a resolution of 100 × 100 of this detector.

Number of references:8

Database:Compendex

Accession number:2006239925944

Title:Nonlinear Imbert-Fedorov effect for reflective light beam

Authors:Li, Chun-Fang (1); Zhang, Ji-Yue (1); Duan, Tao (1); Ge, Guo-Ku (1)

Author affiliation:(1) State Key Laboratory of Transient Optics Technology, 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) Department of Physics, Shanghai University, Shanghai 200444, China; (4) Xi'an University of Science and Technology, Xi'an 710054, China

Corresponding author:Li, C.-F.(chunfang@opt.ac.cn)

Source title:Zhongguo Jiguang/Chinese Journal of Lasers

Abbreviated source title:Zhongguo Jiguang

Volume:33

Issue:SUPPL.

Issue date:March 2006

Publication year:2006

Pages:203-205

Language:Chinese

ISSN:02587025

CODEN:ZHJIDO

Document type:Journal article (JA)

Publisher:Science Press

Abstract:Nonlinear Imbert-Fedorov (I-F) effect was discussed theoretically. Only Kerr nonlinear optical medium was discussed. The results appear that nonlinear Imbert-Fedorov effect; near the critical angle, in negative Kerr effect nonlinear optical medium is smaller than linear Imbert-Fedorov effect in the linear optical medium. With increasing of light intensity, Imbert-Fedorov effect decrease gradually and emerge negative shift.

Number of references:7

Main heading:Nonlinear optics

Controlled terms:Mathematical models - Numerical analysis

Uncontrolled terms:Imbert Fodorov effect - Nonlinear optical medium

Classification code:741.1.1 Nonlinear Optics - 921 Mathematics

Treatment:Applications (APP)

Database:Compendex

Accession number:2006259949805

Title:The signal processing design of the spacial transient optical signal based on LabVIEW

Authors:Zhang, Ying (0); Wen, Desheng (0); Han, Yameng (0); Li, Tao (0); Guo, Rui (0)

Corresponding author:Zhang, Y.(halferzy@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:35

Issue:5

Issue date:May 2006

Publication year:2006

Pages:772-775

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, China

Abstract:The frequency features of the optical transient signal, the background signal and high frequency noise are analyzed, and the virtual instruments of signal processing are given based on LabVIEW. The design of the digital filter is introduced and the original signal is filtered, and then the spectrum estimation of the filtered signal gives the power spectrum density. The test result shows that the new method is simple, reliable and effective.

Number of references:9

Database:Compendex

Accession number:2006149796541

Title:Birefringent laterally sheared beam splitter - Savart polariscope

Authors:Zhang, Chunmin (1); Zhao, Baochang (2); Xiangli, Bin (2); Li, Yingcai (2); Peng, Zhihong (1)

Author affiliation:(1) Shool 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:6150 I

Monograph title:2nd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment

Issue date:2006

Publication year:2006

Article number:615001

Language:English

ISSN:0277786X

CODEN:PSISDG

Document type:Conference article (CA)

Conference name:2nd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment

Conference date:November 2, 2005 - November 5, 2005

Conference location:Zian, China

Conference code:66958

Sponsor:Chinese Optical Society, COS, China; Institute of Optics and Electronics, CAS, China

Publisher:SPIE

Abstract:A laterally sheared beam splitter-savart polariscope was developed based on a single birefringent component. It is a key part in a novel polarization interference imaging spectrometer. The Savart polariscope consists of two paralled plates of calcite cut at an arbitrary angle to the optics axis and can split up a ray of light incident on the surface into an ordinary ray and an extraordinary ray. The output rays are paralled laterally sheared. The Savart polariscope is 25×25×12mm3 in size. The lateral displacement is 1mm and transmissivity is about 90 percent in spectral range of 0.4-2.5μm. A static polarization imaging spectrometer based on a Savart polariscope has advantage of ultra-compact size, wide field of view, high throughput and without any moving parts. The principle and construction of Savart polariscope are described, and the experimental results of the interference imaging spectrum are given.

Number of references:18

Main heading:Optical beam splitters

Controlled terms:Birefringence - Light interference - Light polarization - Polariscopes - Spectrometers

Uncontrolled terms:Birefringent crystals - Polarization interference imaging spectrometers - Savart polariscope

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

Treatment:Theoretical (THR)

DOI:10.1117/12.677951

Database:Compendex

Accession number:2006239925946

Title:Measurement of enhanced near field and resonant enhancement of Goos-Hanchen shift

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

Author affiliation:(1) State Key Laboratory of Transient Optics Technology, 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) Department of Physics, Shanghai University, Shanghai 200444, China

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

Source title:Zhongguo Jiguang/Chinese Journal of Lasers

Abbreviated source title:Zhongguo Jiguang

Volume:33

Issue:SUPPL.

Issue date:March 2006

Publication year:2006

Pages:210-212

Language:Chinese

ISSN:02587025

CODEN:ZHJIDO

Document type:Journal article (JA)

Publisher:Science Press

Abstract:It is predicted that the Goos-Hanchen (GH) shift of both reflected and transmitted light beams in the sketch of thin-film frustrated total reflection can be resonantly enhanced. At same time the evanescent wave field in the medium of lower refractive index is still enhanced. In order to measure enhanced evanescent wave field, sketch of frustrated total reflection is used. The results indicate that the GH shifts of reflected and transmitted wave beams can be modulated by changing incident angle and the thickness of the thin film. When the thickness of the vacuum layer satisfies some condition, the GH shift of transmitted beams are half approximately of the reflected beam.

Number of references:11

Main heading:Optical films

Controlled terms:Dielectric films - Light reflection - Physical optics - Transparency

Uncontrolled terms:Finite-sized light beam - Frustrated total reflection - Measurement of enhanced near field - Thin dielectric film

Classification code:708.1 Dielectric Materials - 741.1 Light/Optics - 741.3 Optical Devices and Systems

Treatment:Applications (APP)

Database:Compendex

Accession number:2006209874835

Title:Fabrication of low-cost polymer microlens array

Authors:Li, Tonghai (1); Hu, Baowen (1); Jiao, Guohua (1); Guo, Xiaoyi (1); Wang, Lili (1); Li, Yulin (1)

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

Corresponding author:Li, T.(litonghai2000@163.com)

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

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:6149

Volume title:2nd International Symposium on Advanced Optical Manufacturing and Testing Technologies - Advanced Optical Manufacturing and Testing Technologies

Issue date:2006

Publication year:2006

Article number:61491P

Language:English

ISSN:0277786X

CODEN:PSISDG

ISBN-10:0819461881

ISBN-13:9780819461889

Document type:Conference article (CA)

Conference name:2nd International Symposium on Advanced Optical Manufacturing and Testing Technologies - Advanced Optical Manufacturing and Testing Technologies

Conference date:November 2, 2005 - November 5, 2005

Conference location:Xian, China

Conference code:67254

Sponsor:Chinese Optical Society, COS, China; The Institute of Optics and Electronics, CAS, China; SPIE

Publisher:SPIE

Abstract:The fabrication technology of refractive microlens array (MLA) with self-assembly of drops of various thermoplastic optical polymer solutions is reported. In order to develop a conventional drop-on-demand type ink-jet printing method for fabricating high quality microlens array, Firstly, we tried to prepare a series of optical polymer inks. These inks compose of high quality optical polymers, polymethylmethacrylate (PMMA), dopant, and functional organic molecules such as laser dye, nonlinear organic dye, and rare earth ion chelates with a suitable organic solvent. Effects of surface tension on the polymer solution drops induced the self-formation of microlenses. This process exhibited a completely self-assembly characteristic without any chemical and photochemical post-treatment. The resulting microlens array displayed diameters varying from 1mm to 5mm and focal lengths from less than one millimeter to a few millimeters. Observation with an atomic force microscope reveals that the surface roughness of the lens is 0.9 nm. The transmittance spectrum of the lens is also measured.

Number of references:16

Main heading:Microlenses

Controlled terms:Atomic force microscopy - Ink - Polymers - Polymethyl methacrylates - Printing - Self assembly - Thermoplastics

Uncontrolled terms:Drop-on-demand (DOD) - Photochemical post-treatment - Refractive microlens array - Rhodamine 6G

Classification code:815.1 Polymeric Materials - 811.0.4 Engineering and Process Control - 811.0.2 Chemistry, Physics and Mathematics - 815.1.1 Organic Polymers - 804 Chemical Products Generally - 741.3 Optical Devices and Systems - 714.2 Semiconductor Devices and Integrated Circuits - 745.1 Printing

Treatment:Theoretical (THR)

DOI:10.1117/12.674251

Database:Compendex

Accession number:2006139784333

Title:Study on energy transfer in LHG II of bryopsis corticulans by femtosecond spectra

Authors:Zhang, Sujuan (0); Wang, Shuicai (0); He, Junfang (0); Chen, Hui (0)

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:35

Issue:2

Issue date:February 2006

Publication year:2006

Pages:166-170

Language:English

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, China

Abstract:Based on the technique of Time Correlated Single Photon Counting (TCSPC), energy transfer kinetics among chlorophylls in a monomeric unit of major light-harvesting complex (LHCII) from bryopsis corriculan were studied. In the chlorophyll Q region, six characteristic molecules marked as Chlb630, Chlb642, Chla652653 Cnla664667 Chla675676, 680, Chla682683 were discriminated. Fluorescence kinetics measured in the chlorophyll Q region was excited by pulsed light of 630 nm (70 fs). After analyzing, results of energy transfer among Chls were obtained as following: only-20% of the energy absorbed by Chlb630 is initially transferred directly to other Chls with time constants shorter than 150 fs. Overwhelming part of the energy transfer among chlorophylls occur with time constants longer than 76 ps. Energy transfer pathway with time constants of several hundred femotoseconds and tens of picoseconds were also obtained. The fluorescence lifetimes of Chla652653 Cnla664667 Chla675676, 680, Chla682683, were determined to be 1.41 ns, 1.39 ns, 676 ps, 709 ps respectively. The percentages of energy dissipation in the pathway of fluorescence emission are no more than 40% in the monomeric unit of LHC II.

Number of references:14

Database:Compendex

Accession number:2006189856699

Title:Three-dimensional multilevel memory based on laser-polarization-dependence birefringence

Authors:Cheng, Guanghua (1); Liu, Qing (1); Wang, Yishan (1); Zhao, Wei (1); Chen, Guofu (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710068, China; (2) Applied Physics Institute, Zhejiang Wanli College, Ningbo 315101, China

Corresponding author:Cheng, G.(gcheng@opt.ac.cn)

Source title:Chinese Optics Letters

Abbreviated source title:Chin. Opt. Lett.

Volume:4

Issue:2

Issue date:February 2006

Publication year:2006

Pages:111-113

Language:English

ISSN:16717694

Document type:Journal article (JA)

Publisher:Science Press

Abstract:The femtosecond laser-modified region in isotropic glass medium shows a big optical birefringence. Transmission of the birefringent regions between two crossed polarizers depends on phase retardation and the orientation angle of the birefringent optical axes. Based on this effect, three-dimensional (3D) multilevel memory was proposed and demonstrated for nonvolatile memory up to eight levels, in contrast to the standard two-level technology. Eight-level writing and reading are distinguishable in fused silica with a near-infrared femtosecond laser. The retention of this memory is characterized for nonvolatile applications.

Number of references:20

Main heading:Data storage equipment

Controlled terms:Birefringence - Glass - Infrared radiation - Light polarization - Nonvolatile storage - Silica - Three dimensional - Ultrashort pulses

Uncontrolled terms:Isotropic glass medium - Near infrared femtosecond laser - Optical birefringence - Three dimensional multilevel memory

Classification code:722.1 Data Storage, Equipment and Techniques - 722.2 Computer Peripheral Equipment - 741.1 Light/Optics - 744.1 Lasers, General - 804.2 Inorganic Compounds - 812.3 Glass

Treatment:Applications (APP); Theoretical (THR); Experimental (EXP)

Database:Compendex

Accession number:20063810126002

Title:Bit-wise volumetric storage in transparent materials by ultrafast laser

Authors:Cheng, Guanghua (1); Wang, Yishan (1); Chen, Guofu (1); Zhao, Wei (1); Men, Haining (1); Sun, Chuandong (1)

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

Corresponding author:Cheng, G.(gcheng@opt.ac.cn)

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

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:6344 I

Monograph title:Advanced Laser Technologies 2005

Issue date:2006

Publication year:2006

Article number:634417

Language:English

ISSN:0277786X

CODEN:PSISDG

ISBN-10:0819464201

ISBN-13:9780819464200

Document type:Conference article (CA)

Conference name:Advanced Laser Technologies 2005

Conference date:September 3, 2005 - September 6, 2005

Conference location:Tianjin, China

Conference code:68108

Publisher:SPIE

Abstract:We report on an experimental investigation into the recording and readout of 3D high-density optical data storage in transparent optical glasses using a femtosecond laser. A compact Ti:sapphire ultrafast laser amplifier as writing laser was developed to output 100mW 2.1ps at 1KHz with 1 W pump laser. Laser pulses modulation is realized by modulating two circuits of trigger pulses signal which are used to control laser pulses trapping and switching out from cavity, respectively. A formatted and coded writing was realized in fused silica and doped polymethylmethacrylate(PMMA) bulk. A phase-contrast and a reflection confocal reading system with software are developed for optical readout multi-layer data bits in parallel.

Number of references:12

Main heading:Optical data storage

Controlled terms:Laser pulses - Optical glass - Semiconductor lasers - Switching - Transparency - Ultrafast phenomena

Uncontrolled terms:3D optical storage - Femtosecond lasers - Phase-contrast - Reflection confocal

Classification code:744.1 Lasers, General - 741.3 Optical Devices and Systems - 741.1.1 Nonlinear Optics - 741.1 Light/Optics - 722.1 Data Storage, Equipment and Techniques - 721.1 Computer Theory, Includes Formal Logic, Automata Theory, Switching Theory, Programming Theory - 712.1 Semiconducting Materials

Treatment:Theoretical (THR); Experimental (EXP)

DOI:10.1117/12.693589

Database:Compendex

Accession number:20063510092366

Title:High repetition rate femtosecond Yb-doped fiber amplifier

Authors:Ding, Guang-Lei (1); Shen, Hua (1); Yang, Ling-Zhen (1); Wang, Yi-Shan (1); Zhao, Wei (1); Chen, Guo-Fu (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 710068, China; (2) Graduate School of Chinese Academy of Sciences, Beijing 100039, China

Corresponding author:Ding, G.-L.(glding@163.com)

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

Abbreviated source title:Qiangjiguang Yu Lizishu

Volume:18

Issue:6

Issue date:June 2006

Publication year:2006

Pages:886-890

Language:Chinese

ISSN:10014322

CODEN:QYLIEL

Document type:Journal article (JA)

Publisher:Editorial Office of High Power Laser and Particle Beams

Abstract:The optimum fiber length of the single mode Yb-doped fiber amplifier is simulated. Experiments of the single-mode Yb-doped fiber amplifier and gratings compressor are discussed. The seed pulses come from a mode-locking Yb-doped fiber ring laser. The maximum output average power of the fiber laser is 7 mW at 25.4 MHz repetition rate with a pulse width of 56 ps. The seed pulses are amplified by using three different length single mode Yb-doped fibers respectively which are pumped by a 976 nm semiconductor laser with a maximum output power about 250 mW. The amplified pulses are compressed by using the traditional gratings compressor. When the length of the single mode Yb-doped fiber is 1.2 m, the fiber amplifier generates a maximum power of 140 mW corresponding to a gain about 13 dB. The amplified single pulse energy is 5.5 nJ. When the distance of the gratings is 14.1 cm, the width of the pulses is compressed to about 440 fs which is the minimum. The average power after the compressor is 43 mW corresponding to a peak-power of 3.8 kW.

Number of references:14

Main heading:Fiber lasers

Controlled terms:Diffraction gratings - Laser mode locking - Light amplifiers - Numerical analysis - Single mode fibers

Uncontrolled terms:Fiber amplifiers - Gratings compressor - Pulse amplification - Ytterbium doped fiber

Classification code:741.1.2 Fiber Optics - 741.3 Optical Devices and Systems - 744.1 Lasers, General - 744.4 Solid State Lasers - 921.6 Numerical Methods

Treatment:Applications (APP); Experimental (EXP)

Database:Compendex

Accession number:2006139790489

Title:Research on gradient index material containing silver ions

Authors:Su, Zhimei (1); Liu, Tong (1); Kang, Lijun (1); Li, Yulin (1); Wang, Lui (1); Kong, Yu'E (1); Li, Tonghai (1)

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

Corresponding author:Su, Z.

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

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:6029

Monograph title:ICO20: Materials and Nanostructures

Issue date:2006

Publication year:2006

Article number:60291L

Language:English

ISSN:0277786X

CODEN:PSISDG

Document type:Conference article (CA)

Conference name:ICO20: Materials and Nanostructures

Conference date:August 21, 2005 - August 26, 2005

Conference location:Changchun, China

Conference code:66930

Publisher:SPIE

Abstract:Since the gradient index material has important applications at photoelectric system, imaging system, and integrated-optical system. Now, researches on gradient index material containing silver ions are more popular, it is difficult to get glass with high silver content as silver ion is extruded from molten glass at the molten temperature. Two-step ion-exchange process including Ag+ -Na+ and Na+ - Ag+ ion-exchange is used to get gradient index. This paper is based on the research in our lab, by adjusting the glass composition to get a series of sodium-rich glass then drawing the fusioned glass into fiber with diameter of 1mm used for ion-exchange. We used mixed molten salt for ion-exchange, then we researched on the choice of silver salt, the advantage and disadvantage of mixed molten salt and single molten salt, and the coloring up problem after ion-exchange.

Number of references:6

Main heading:Gradient index optics

Controlled terms:Glass - Imaging systems - Ion exchange - Optical systems - Salts - Silver

Uncontrolled terms:Gradient index - Photoelectric systems - Silver ions - Two step ion-exchange

Classification code:547.1 Precious Metals - 723.2 Data Processing and Image Processing - 741.1 Light/Optics - 741.3 Optical Devices and Systems - 804.2 Inorganic Compounds - 812.3 Glass

Treatment:Experimental (EXP)

DOI:10.1117/12.667821

Database:Compendex

Accession number:20063810126055

Title:Particle size, displacement, and velocity measurements with pulsed-laser holography

Authors:Gao, Hongwen (1); Sun, Chuandong (1); Qin, Junjun (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 Youyi xilu, 710068 Xi'an, Shaanxi, China

Corresponding author:Gao, H.(gaohw@opt.ac.cn)

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

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:6344 II

Monograph title:Advanced Laser Technologies 2005

Issue date:2006

Publication year:2006

Article number:63442O

Language:English

ISSN:0277786X

CODEN:PSISDG

ISBN-10:0819464201

ISBN-13:9780819464200

Document type:Conference article (CA)

Conference name:Advanced Laser Technologies 2005

Conference date:September 3, 2005 - September 6, 2005

Conference location:Tianjin, China

Conference code:68108

Publisher:SPIE

Abstract:A method for measuring the size, position, displacement and velocity of panicles in a panicle field with pulsed-laser holography is introduced. In-line holography and off-axis holography are applied to analysis of particle fields, especially off-axis holography. A 4-F optical system is used in the holographic recording system, in which the information on particles is recorded on a holographic plate. In a parallel optical field, the particle analysis can be performed with different instruments and in different depth of field. The parallel optical field imparts each particle with the same amplification ratio. This kind of optical system will favour the reconstruction, data processing, and calibration of particles in a particle field. An interference pattern of particles formed on a recording plate and relationship among diameters of the particles, far-field number, and the distance from the plate to a particle are analyzed. Some experimental results of the size, position, displacement, and velocity measurement of particles of a reconstructed particle field are presented. The particle identification and the formation of noise in an image of a reconstructed particle field in one section are also discussed.

Number of references:28

Main heading:Optical systems

Controlled terms:Data processing - Holography - Image reconstruction - Laser pulses - Particle beam dynamics - Velocity measurement

Uncontrolled terms:4-F optical systems - In-line holography - Off-axis holography - Particle fields

Classification code:723.2 Data Processing and Image Processing - 741.3 Optical Devices and Systems - 743 Holography - 744.1 Lasers, General - 932.1 High Energy Physics - 943.3 Special Purpose Instruments

Treatment:Theoretical (THR)

DOI:10.1117/12.693659

Database:Compendex

Accession number:20064210182660

Title:Multifocal two-photon excitation fluorescence sampling imaging combining lifetime and spectrum resolutions

Authors:Liu, Lixin (1); Lin, Ziyang (2); Qu, Junle (2); Chen, Danni (2); Xu, Gaixia (2); Guo, Baoping (2); Niu, Hanben (2)

Author affiliation:(1) Xi'An Institute of Optics and Precession Mechanics, Chinese Academy of Sciences, Xi'an, 710068, China; (2) Institute of Optoelectronics, Shenzhen University, Shenzhen, 518060, China

Corresponding author:Liu, L.(lilyliulixin@163.com)

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

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

Volume:6047 II

Monograph title:Fourth International Conference on Photonics and Imaging in Biology and Medicine

Issue date:2006

Publication year:2006

Article number:60472T

Language:English

ISSN:16057422

ISBN-10:081946080X

ISBN-13:9780819460806

Document type:Conference article (CA)

Conference name:4th International Conference on Photonics and Imaging in Biology and Medicine

Conference date:September 3, 2006 - September 6, 2006

Conference location:Tianjin, China

Conference code:68312

Sponsor:National Natural Science Foundation of China; SPIE Russia Chapter; Int. Laser Center of M.V. Lomonoson Moscow State University; Bio-Optics and Laser Medicine Comm. of Chinese Optics Soc.; Science and Technology Garden of Tianjin University

Publisher:SPIE

Abstract:Multifocal multiphoton microscopy (MMM) is a more efficient and powerful method for three-dimensional (3-D) fluorescence imaging with reduced acquisition time compared with conventional confocal and two-photon excitation fluorescence microscopy. We present a novel multifocal two-photon excitation fluorescence sampling imaging technique that is based on a specially designed streak camera and combines fluorescence lifetime and spectrum resolutions. A proof-of-principle experiment is performed on a standard fluorescent dye solution (Rhodamine 6G in ethanol), Time- and spectrum-resolved sampled fluorescence image of Rhodamine 6G is obtained in a snapshot. The reconstructed two-dimensional (2-D) fluorescence image of a prepared plant slide is also obtained by moving the sample laterally. The capability of this system capable of performing simultaneous 2-D measurements of temporal and spectral information has many potential applications, e.g., multi-well imaging and spectrally resolved multifocal multiphoton fluorescence lifetime imaging etc.

Number of references:27

Main heading:Imaging systems

Controlled terms:Fluorescence - Image reconstruction - Microscopic examination - Optical resolving power - Photons - Sampling

Uncontrolled terms:Fluorescence lifetime - Fluorescence lifetime imaging - Fluorescence spectra - Microlens arrays - Picosecond streak cameras - Two-photon excitation fluorescence

Classification code:723.2 Data Processing and Image Processing - 741.1 Light/Optics - 741.3 Optical Devices and Systems - 913.3 Quality Assurance and Control - 931.3 Atomic and Molecular Physics

Treatment:Theoretical (THR)

DOI:10.1117/12.710079

Database:Compendex

Accession number:2006179840604

Title:Design of rotation mirror detection system for image hyperspectrometer carried by satellite

Authors:Cheng, Haibo (0); Liu, Xuebin (0); Hu, Bingliang (0); Guo, Rui (0)

Corresponding author:Cheng, H.(haitty@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:35

Issue:3

Issue date:March 2006

Publication year:2006

Pages:369-372

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, China

Abstract:A solution of a simple and reliable ground detection system is introduced for the rotating mirror system in Image Hyperspectrometer Carried by Satellite in this paper. The hardware of detection system is introduced, its software design scheme, main technologies and design flow are provided in detail. Experiments and application show that the solution works stably and has a good effect.

Number of references:6

Database:Compendex

Accession number:2006199869235

Title:Effect of initial chirp on supercontinuum generation by femtosecond pulse in photonic crystal fibers

Authors:Liu, Wei-Hua (0); Wang, Yi-Shan (0); Liu, Hong-Jun (0); Duan, Zuo-Liang (0); Zhao, Wei (0); Li, Yong-Fang (0); Peng, Qin-Jun (0); Xu, Zu-Yan (0)

Corresponding author:Liu, W.-H.

Corr. author affiliation:State Key Laboratory of Transient Optics and Technology, 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:55

Issue:4

Issue date:April 2006

Publication year:2006

Pages:1815-1820

Language:Chinese

ISSN:10003290

CODEN:WLHPAR

Document type:Journal article (JA)

Publisher:Science Press, Beijing, China

Abstract:The numerical simulations with the method of split-step Fourior were presented to investigate the effect of initial chirp on supercontinuum generation in photonic crystal fibers. According to the fiber length, the evolution of pulse in photonic crystal fibers was divided into three stages: initial broadening stage, dramatic broadening stage and saturation broadening stage. By discussing the differences in evolution of the chirp pulse and non-chirp pulse in each stage, we find that the initial chirp only affects the spectrum at the initial broadening stage and the dramatic broadening stage, and the chirp is profitable for spectrum broadening when β2C less than or equal 0, but the effect of chirp is the opposite when βC > 0. In the saturation broadening stage, chirp does not affect the spectrum anymore. If we want to broaden the spectrum by using chirp pulse we must choose a right fiber length, and output the pulse in the dramatic broadening stage. These conclusions provide significant reference for supercontinuum generation in photonic crystal fibers with chirp pulse.

Number of references:16

Database:Compendex

Accession number:2006139784330

Title:Thermal analysis and design for high resolution space telescope

Authors:Chen, Rongli (0); Geng, Liyin (0); Ma, Zhen (0); Li, Yingcai (0)

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:35

Issue:1

Issue date:January 2006

Publication year:2006

Pages:154-157

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, China

Abstract:There are several different sources of thermal energy acting on a spacecraft as it is flying on heat dreariness orbit.They are solar radiation, albedo, earth emitted infrared, and heat generated by camera equipment itself. Temperature fluctuating has a bad influence on imaging quality of high resolution camera. Purpose of thermal control is to maintain all the components of a space-based camera within their respective temperature limits. Detailed thermal analysis and temperature calculation in different work status are presented for space-based high resolution camera as a whole in the paper, the result can supply references to thermal control for space-based high resolution camera.

Number of references:7

Database:Compendex

Accession number:2006129775995

Title:Four-wave mixing self-stability based on photonic crystal fiber and its applications on erbium-doped fiber lasers

Authors:Liu, Xue-Ming (1)

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

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

Source title:Optics Communications

Abbreviated source title:Opt Commun

Volume:260

Issue:2

Issue date:April 15, 2006

Publication year:2006

Pages:554-559

Language:English

ISSN:00304018

CODEN:OPCOB8

Document type:Journal article (JA)

Publisher:Elsevier

Abstract:The analytic solutions of coupled-mode equations of four-wave mixings (FWMs) are achieved by means of the undepleted approximation and the perturbation method. The self-stability mechanism of the FWM processes is theoretically proved and is applicable to design a new kind of triple-wavelength erbium-doped fiber lasers. The proposed fiber lasers with excellent stability and uniformity are demonstrated by using a flat-near-zero-dispersion high-nonlinear photonic-crystal-fiber. The significant excellence is analyzed in theory and is proved in experiment. Our fiber lasers can stably lase three waves with the power ripple of less than 0.4 dB. © 2005 Elsevier B.V. All rights reserved.

Number of references:33

Main heading:Lasers

Controlled terms:Approximation theory - Crystals - Dispersion (waves) - Doping (additives) - Perturbation techniques - Photons

Uncontrolled terms:Erbium-doped fiber laser - Fiber Bragg grating - Four-wave mixing - Photonic crystal fiber

Classification code:711.1 Electromagnetic Waves in Different Media - 712.1 Semiconducting Materials - 744.1 Lasers, General - 921.6 Numerical Methods - 931.3 Atomic and Molecular Physics - 933.1 Crystalline Solids

Treatment:Theoretical (THR)

DOI:10.1016/j.optcom.2005.11.018

Database:Compendex

Accession number:2006049665548

Title:Waveguides induced by grey screening solitons

Authors:Lu, Ke-Qing (1); Zhao, Wei (1); Yang, Yan-Long (1); Zhang, Mei-Zhi (1); Li, Jin-Ping (1); Liu, Hong-Jun (1); Zhang, Yan-Peng (2)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academic of Sciences, Xi'an 710068, China; (2) Department of Electronic Science and Technology, Xi'an Jiaotong University, Xi'an 710049, China

Corresponding author:Lu, K.-Q.

Source title:Chinese Physics

Abbreviated source title:Chin. Phys.

Volume:15

Issue:2

Issue date:Febrary 1, 2006

Publication year:2006

Pages:403-406

Language:English

ISSN:10091963

E-ISSN:17414199

CODEN:CHPHF4

Document type:Journal article (JA)

Publisher:Institute of Physics Publishing

Abstract:We investigate the properties of waveguides induced by one-dimensional grey screening solitons in biased photorefractive crystals. The results show that waveguides induced by grey screening solitons are always of single mode for all intensity ratios, i.e. the ratios between the peak intensity of the soliton and the dark irradiance. Our analysis indicates that the energy confined near the centre of the grey soliton and the propagation constant of the guided mode of the waveguide induced by the grey screening soliton increase monotonically with intensity ratio increasing. On the other hand, when the soliton greyness increases, the energy confined near the centre of the grey soliton and the propagation constant of the guided mode of the waveguide induced by the grey screening soliton decrease monotonically. Relevant examples are provided where photorefractive crystal is of the strontium barium niobate type. © 2006 Chin. Phys. Soc. and IOP Publishing Ltd.

Number of references:16

Main heading:Solitons

Controlled terms:Crystalline materials - Nonlinear optics - Photorefractive materials - Strontium compounds - Waveguides

Uncontrolled terms:Photorefractive effect - Soliton waveguides

Classification code:714.3 Waveguides - 741.1.1 Nonlinear Optics - 741.3 Optical Devices and Systems - 804.2 Inorganic Compounds - 931.3 Atomic and Molecular Physics - 933.1 Crystalline Solids

Treatment:Experimental (EXP)

DOI:10.1088/1009-1963/15/2/028

Database:Compendex

Accession number:20064510226407

Title:Laser shaft alignment system with dual PSDs

Authors:Jiao, Guo-Hua (1); Li, Yu-Lin (1); Zhang, Dong-Bo (3); Li, Tong-Hai (1); Hu, Bao-Wen (1)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, CAS, Xi'an 710068, China; (2) Graduate School, Chinese Academy of Sciences, Beijing 100039, China; (3) The 16th Institute, CATEC, Xi'an 710100, China

Corresponding author:Jiao, G.-H.(ghjiao@opt.ac.cn)

Source title:Journal of Zhejiang University: Science

Abbreviated source title:J Zhejiang Univ: Sci

Volume:7

Issue:10

Issue date:October 2006

Publication year:2006

Pages:1772-1776

Language:English

ISSN:10093095

CODEN:JZUSFR

Document type:Journal article (JA)

Publisher:Zhejiang University

Abstract:Shaft alignment is an important technique during installation and maintenance of a rotating machine. A high-precision laser alignment system has been designed with dual PSDs (Position Sensing Detector) to change traditional manual way of shaft alignment and to make the measurement easier and more accurate. The system is comprised of two small measuring units (laser transmitter and detector) and a PDA (Personal Digital Assistant) with measurement software. The laser alignment system with dual PSDs was improved on a single PSD system, and yields higher measurement accuracy than the previous design, and has been successful for designing and implements actual shaft alignment. In the system, the range of offset measurement is ±4 mm, and the resolution is 1.5 μm, with accuracy being less than 2 μm.

Number of references:14

Main heading:Alignment

Controlled terms:Detectors - Installation - Maintenance - Measurements - Personal digital assistants - Rotating machinery - Transmitters

Uncontrolled terms:Laser alignment - Laser micro displacement measurement - Laser transmitter - Position sensing detector (PSD) - Rotating machine - Shaft alignment

Classification code:601.1 Mechanical Devices - 716 Telecommunication; Radar, Radio and Television - 722 Computer Systems and Equipment - 913.5 Maintenance

Treatment:Applications (APP)

DOI:10.1631/jzus.2006.A1772

Database:Compendex

Accession number:2006269966267

Title:Ultra-short pulsed ytterbium-doped fiber laser and amplifier

Authors:Ding, Guanglei (1); Zhao, Xin (1); Wang, Yishan (1); Zhao, Wei (1); Chen, Guofu (1)

Corresponding author:Ding, G.(glding@163.com)

Source title:Chinese Optics Letters

Abbreviated source title:Chin. Opt. Lett.

Volume:4

Issue:4

Issue date:April 2006

Publication year:2006

Pages:222-224

Language:English

ISSN:16717694

Document type:Journal article (JA)

Publisher:Science Press

Abstract:This paper investigates a high power all fiber ultrashort pulse laser system. This system consists of a mode-locking laser oscillator, a multi-stage amplifier, a pulse selector, and a paired grating pulse compressor. With pulse energy of 12 μJ at repetition rate of 30 kHz, the laser at center wavelength of 1.05 μm was obtained. Pulse width of 525 fs was achieved after the grating pair compressor.

Number of references:13

Main heading:Fiber lasers

Controlled terms:Energy conversion - Laser mode locking - Laser pulses - Light amplifiers - Oscillators (electronic)

Uncontrolled terms:Laser oscillator - Multi stage amplifier - Paired grating pulse compressor - Pulse selector - Ultrashort laser pulse - Ytterbium doped fiber laser

Classification code:525.2 Energy Conservation - 744.1 Lasers, General - 744.4 Solid State Lasers

Treatment:Applications (APP); Experimental (EXP)

Database:Compendex

Accession number:20073110719083

Title:A novel MRF-based image segmentation algorithm

Authors:Hou, Yimin (1); Guo, Lei (1); Lun, Xiangmin (2)

Author affiliation:(1) Department of Automation, Northwestern Polytechnical University, Xi'an, China; (2) Xi'an Institute of Optics and Precision Mechanics of Cas, Xi'an, China

Corresponding author:Hou, Y.(ymh7821@sohu.com)

Source title:9th International Conference on Control, Automation, Robotics and Vision, 2006, ICARCV '06

Abbreviated source title:Int. Conf. Contr. Autom. Robot. Vis.

Monograph title:9th International Conference on Control, Automation, Robotics and Vision, 2006, ICARCV '06

Issue date:2006

Publication year:2006

Article number:4150015

Language:English

ISBN-10:1424403421

ISBN-13:9781424403424

Document type:Conference article (CA)

Conference name:9th International Conference on Control, Automation, Robotics and Vision, 2006, ICARCV '06

Conference date:December 5, 2006 - December 8, 2006

Conference location:Singapore, Singapore

Conference code:70023

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

Abstract:Proposed a novel image segmentation method based on Markov Random Field (MRF) and context information. The method introduces the relationships of observed image intensities and distance between pixels to the traditional neighborhood potential function, so that to describe the probability of pixels being classified into one class. We transform the segmentation process to maximum a posteriori (MAP) by Beyes theorem. Finally, the iterative conditional model (ICM) is used to solve the MAP problem. In the experiments, this method is compared with traditional Expectation-Maximization (EM) and MRF image segmentation techniques using synthetic and real images. The experiment results and SNR-CCR histogram show that the algorithm proposed is more effective for noisy image segmentation. © 2006 IEEE.

Number of references:12

Main heading:Image segmentation

Controlled terms:Data processing - Function evaluation - Iterative methods - Learning algorithms - Probability distributions - Random processes

Uncontrolled terms:Image intensities - Markov random fields - Maximum a posteriori - Potential functions

Classification code:723.2 Data Processing and Image Processing - 741.1 Light/Optics - 921.6 Numerical Methods - 922.1 Probability Theory

Treatment:Theoretical (THR)

DOI:10.1109/ICARCV.2006.345105

Database:Compendex

Accession number:20063510092911

Title:Application of fuzzy control algorithmic based on wavelet analyses

Authors:Dong, Yong-Ying (0); Ma, Cai-Wen (0); Dong, Sen (0)

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:33

Issue:7

Issue date:July 2006

Publication year:2006

Pages:18-22

Language:Chinese

ISSN:1003501X

CODEN:GUGOEC

Document type:Journal article (JA)

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

Abstract:To satisfy the particularity of space circumstance and the rigid performance specifications, a fuzzy controller based on wavelet analyses is presented for servo control of space tracking system. The algorithm, which combines qualitative information expression of fuzzy control and outstanding part control performance of wavelet basis function, uses wavelet basis function as membership function whose shape can be adjusted on line by error so that the fuzzy control can maintain a better adaptivity. Experiment results show that the controller has better dynamic and anti-jamming performances than conventional PID (proportion, integral, and differential) controllers. It can be applied to tracking control system.

Number of references:8

Database:Compendex

Accession number:20063610101592

Title:Design and realization of electronics system of multispectral digital camera

Authors:Da, Xuan-Fu (0); Zhang, Bo-Heng (0); Bian, Chuan-Ping (0); Qu, You-Shan (0)

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

Source title:Guangxue Jishu/Optical Technique

Abbreviated source title:Guangxue Jishu

Volume:32

Issue:4

Issue date:July 2006

Publication year:2006

Pages:521-523

Language:Chinese

ISSN:10021582

CODEN:GJISEP

Document type:Journal article (JA)

Publisher:Optical Technique, Beijing, China

Abstract:The design and realization of electronic system of a multispectral digital camera are introduced. The timing generation, signal processing, signal controlling, output interface and data storage unit are mentioned. To improve imaging quality, the system has the function of luminous energy and line frequency adjusting. To meet the usage on the plane, a stabilization platform was designed. The system can simultaneously store the image data acquired with a storage device. The function of electronic system can meet the design requirement of the digital camera.

Number of references:6

Database:Compendex

Accession number:2006139787705

Title:Novel methods for measuring Modulation Transfer Function for fiber optic taper

Authors:Zhang, Wei (1); Wang, Yaoxiang (1); Tian, Weijian (1); Ma, Weihong (2); Zhang, Hongjian (1); A., Sun

Author affiliation:(1) Xi'An Institute of Optics and Precision Mechanics of CAS, Xi'an, China; (2) Graduate School of Chinese Academy of Science, Beijing, China

Corresponding author:Zhang, W.(zhw@opt.ac.cn)

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

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:6034

Monograph title:ICO20: Optical Design and Fabrication

Issue date:2006

Publication year:2006

Article number:603413

Language:English

ISSN:0277786X

CODEN:PSISDG

Document type:Conference article (CA)

Conference name:ICO20: Optical Design and Fabrication

Conference date:August 21, 2005 - August 26, 2005

Conference location:Changchun, China

Conference code:66941

Publisher:SPIE

Abstract:As a relay optical component, fiber optic taper has become more important and more widely used in the integrated taper assembly image intensified sensors for military and medical imaging application. However, the method for evaluating the quality of output images from the fiber optic taper is few. In this article, the Modulation Transfer Function (MTF) is introduced and measured to evaluate the image quality of fiber optic taper. Because fiber optic taper is of a mosaic array architecture, there are some new problems need to be resolved in defining MTF of it. And there also should be some special requirements in MTF measurement. Two methods including edge scanning and point imaging analyzing are introduced in measuring MTF of fiber optic taper, in which the incident light, scanning step and scanning range are specially limited. Experiments show that the results of the measurements consist with the theoretical analysis simulated by computer. And the spatial averaged MTF of fiber optic taper has been gotten by two means. It is concluded that the MTF value measured by point imaging is always some higher than measured by edge scanning, because the point imaging is more weakly effected by the fiber arrangement in taper.

Number of references:9

Main heading:Optical transfer function

Controlled terms:Computer simulation - Edge detection - Fiber optics - Image quality - Medical imaging - Optical systems

Uncontrolled terms:Edge scanning - Fiber optical taper - Point imaging

Classification code:741.3 Optical Devices and Systems - 741.1.2 Fiber Optics - 741.1 Light/Optics - 741 Light, Optics and Optical Devices - 723.5 Computer Applications - 723.2 Data Processing and Image Processing - 461.1 Biomedical Engineering

Treatment:Theoretical (THR); Experimental (EXP)

DOI:10.1117/12.668126

Database:Compendex

Accession number:20070410389328

Title:Finite element analysis of the plane mirror fastened by adhesive

Authors:Li, Fu (0); Ruan, Ping (0); Zhao, Bao-Chang (0); Ma, Xiao-Long (0)

Corresponding author:Li, F.(daisyfuq@yahoo.com.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:32

Issue:6

Issue date:November 2006

Publication year:2006

Pages:896-899

Language:Chinese

ISSN:10021582

CODEN:GJISEP

Document type:Journal article (JA)

Publisher:Optical Technique, Beijing, China

Abstract:The methods of establishing adhesive finite element model-detailed model and effective model are elaborated in order to research the effect of systems with adhesive. The mode and uniform soaking thermal-elasticity are analyzed through the detailed model. The thickness of adhesive is decided by the athermal method. The different diameter uniform circle adhesive dots and the uniform square adhesive pads with different length are analyzed. The adhesive dots of the different diameter within the same model are analyzed in order to simulate nonuniform adhesive dots in practical situation. The analysis result shows that the influence of square adhesive dots is much stronger than that of circle adhesive dots, and the nonuniform distribution of the adhesive dots will cause the unnecessary surface figure changes of the mirror.

Number of references:9

Database:Compendex

Accession number:20064210187849

Title:Control of video processor based on VHDL technique

Authors:Tian, Yan (0); Cao, Jianzhong (0); Xu, Zhaohui (0); Li, Bianxia (0); Liu, Ying (0)

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:35

Issue:8

Issue date:August 2006

Publication year:2006

Pages:1276-1279

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, China

Abstract:Aiming at the problem of complexity and inflexibility of image sampling control in the video image collection technology today, a method of realizing I2C bus interface by VHDL technology is proposed in this paper. This method based on the available video sampling chip SAA7111 can be used for controlling video collection processor to collect video image. The experiment indicates that I2C bus can control SAA7111 to sample image data correctly and steadily. This scheme is well transplantable.

Number of references:7

Database:Compendex

Accession number:20070410388866

Title:Signal-to-noise ratio study on Fourier self-deconvolution of Fourier transform spectrum

Authors:Gao, Xiaofeng (0); Xiang, Libin (0)

Corresponding author:Gao, X.(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:35

Issue:11

Issue date:November 2006

Publication year:2006

Pages:1713-1716

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, China

Abstract:A more general formula thinking over deconvolution coefficient for computing changes in the signal-to-noise ratio of the spectrum resulting from the Fourier self-deconvolution procedure was derived. Fourier self-deconvolution could reduce the intrinsic halfwidths of lines, which was in practice limited by the noise in the spectrum. The choice of deconvolution coefficient seriously influence the changes in the SNR of Fourier transform spectrum. With the help of the derived formula, the rate of decrease in the SNR as a function of apodization length for six different apodization function was studied, when deconvolution coefficient increased gradually. It was shown that when deconvolution coefficient increased gradually, the rate of decrease in the SNR become great rapidly.

Number of references:5

Database:Compendex

Accession number:2006139793260

Title:Measurements of particle fields by in-line holography

Authors:Gao, Hongwen (1); Sun, Chuandong (1); Qin, Junjun (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 Youyi xilu, 710068 Xi'an, Shaanxi, China

Corresponding author:Gao, H.

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

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:6150 II

Monograph title:2nd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment

Issue date:2006

Publication year:2006

Article number:61503H

Language:English

ISSN:0277786X

CODEN:PSISDG

Document type:Conference article (CA)

Conference name:2nd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment

Conference date:November 2, 2005 - November 5, 2005

Conference location:Zian, China

Conference code:66958

Sponsor:Chinese Optical Society, COS, China; Institute of Optics and Electronics, CAS, China

Publisher:SPIE

Abstract:In-line holography is introduced in this paper. It is one of the many methods that have been used for the precision metrology for objects in various fields of engineering. Holography is a modern powerful tool to measure and analyze particle fields. A 4-f optical system is applied in in-line holographic recording system. The information of a particle field not only is recorded on a holographic plate but also can be derived from the reconstructed images through a reconstruction system. In the parallel optical field, the analysis of a particle field can be done with different instruments and in different depth of field and different positions. This recording system makes every particle in different spatial positions in the particle field have a same amplification ratio. This will be benefit to the data processing and calibration of the particle field. The interferential patterns formed on recording plate and relationship of the particles and the noise of the background in the particle field are analyzed. Some experimental results of particle fields recorded by in-line holography are presented in this paper. The particle identification and the elimination of noise are discussed at the end of this paper.

Number of references:8

Main heading:Holography

Controlled terms:Calibration - Data processing - Optical systems - Recording - Spurious signal noise

Uncontrolled terms:4-f optical system - Demarcating - In-line holography - Particle field - Pulsed-laser holography

Classification code:701.1 Electricity: Basic Concepts and Phenomena - 716.4 Television Systems and Equipment - 723.2 Data Processing and Image Processing - 741.3 Optical Devices and Systems - 743 Holography - 902.2 Codes and Standards

Treatment:Theoretical (THR)

DOI:10.1117/12.676938

Database:Compendex

Accession number:2006139790500

Title:Fluorescence properties of Eu3+ and Sm3+ organic complexes-doped PMMA

Authors:Sun, Ting (1); Wang, Yaoxiang (1); W., Tian; X., Zhang; C., Huang

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

Corresponding author:Sun, T.

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

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:6029

Monograph title:ICO20: Materials and Nanostructures

Issue date:2006

Publication year:2006

Article number:60291X

Language:English

ISSN:0277786X

CODEN:PSISDG

Document type:Conference article (CA)

Conference name:ICO20: Materials and Nanostructures

Conference date:August 21, 2005 - August 26, 2005

Conference location:Changchun, China

Conference code:66930

Publisher:SPIE

Abstract:In this paper, rare earth (Eu3+, Sm3+) binary chelates with hexafluoroacetylacetone(HFA), thenoyltri fluoroacetylacetone (HTTA), and dibenzoylmethide(DBM) were synthesized, respectively. Then the fluorescence properties of the chelates Eu(TTA)<inf>3</inf>, Eu(HFA) <inf>3</inf>, Eu(DBM)<inf>3</inf>, Sm(TTA)<inf>3</inf>, Sm(HFA)<inf>3</inf> and Sm(DBM)<inf>3</inf> in benzene were investigated. It was found that the fluorescence peak at 614nm related to the transition of 5D <inf>0</inf>&rarr7F<inf>2</inf> of Eu3+ was the strongest in Eu(TTA)<inf>3</inf>. Based on this, the concentration (between 0.05-0.5wt.%) influence of Eu(TTA)<inf>3</inf> on fluorescence intensity in Eu(TTA)<inf>3</inf>-doped PMMA was studied. The results showed the fluorescence intensity increases with Eu(TTA)<inf>3</inf> concentrations except that no fluorescence peak was detected for 0.05wt.% Eu(TTA)<inf>3</inf>-doped sample. However, the sharp fluorescence peak accidentally occurs at 614nm when 0.04wt% Eu(TTA)<inf>3</inf> and 0.04wt% Sm(TTA)<inf>3</inf> were co-doped in PMMA. Further investigation revealed that similar fluorescence enhancement occurred for all samples co-doped with Eu(TTA)<inf>3</inf> and Sm(TTA)<inf>3</inf>. It indicated that Sm(TTA)<inf>3</inf> has a strong sensitization effect on the fluorescence of Eu(TTA)<inf>3</inf>. Besides, it was also found the sensitization effect could be decreased with the increasing Sm(TTA)<inf>3</inf> concentrations for a fixed Eu(TTA)<inf>3</inf>-doped content. Finally, two possible energy transfer mechanisms were analysed.

Number of references:13

Main heading:Polymethyl methacrylates

Controlled terms:Benzene - Chelation - Doping (additives) - Energy transfer - Europium compounds - Fluorescence

Uncontrolled terms:Co-doped - Energy Transfer Mechanism - Fluorescence Enhancement - Fluorescence Properties - Sensitization Effect

Classification code:815.1.1 Organic Polymers - 804.2 Inorganic Compounds - 804.1 Organic Compounds - 802.2 Chemical Reactions - 741.1 Light/Optics - 712.1 Semiconducting Materials - 525.4 Energy Losses (industrial and residential)

Treatment:Experimental (EXP)

DOI:10.1117/12.667836

Database:Compendex

Accession number:2006139792903

Title:Automatic detection of moving point targets in staring infrared binocular imaging system

Authors:You-Shan, Qu (1); Yong-Qiang, Duan (1); Ying-Cai, Li (1); Bo-Heng, Zhang (1); Xue-Wu, Fan (1)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, CAS, Xi'an, 710068, China; (2) Graduate School, Chinese Academy of Science, Beijing, 100039, China

Corresponding author:You-Shan, Q.(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:6031

Monograph title:ICO20: Remote Sensing and Infrared Devices and Systems

Issue date:2006

Publication year:2006

Article number:603110

Language:English

ISSN:0277786X

CODEN:PSISDG

Document type:Conference article (CA)

Conference name:ICO20: Remote Sensing and Infrared Devices and Systems

Conference date:August 21, 2005 - August 26, 2005

Conference location:Changchun, China

Conference code:66952

Sponsor:AFOSR Asia Office; Chinese Academy of Sciences, CAS, China; Chinese Academy of Engineering, CAE, China; European Optical Society, EOS

Publisher:SPIE

Abstract:According to the feature of remote sensing staring binocular imaging system, which is the information quantity passed through the overlapped Field Of View (FOV) is larger than that passed through the non-overlapped FOV, a new parallel high-speed automatic detecting algorithm of moving point targets is proposed. In the proposed detecting algorithm, the Difference Vector Norm of the detected images sequence is used as a preprocessing method to get rid of low-frequency noise and background pixels, then the Optical Flow Algorithm is applied to segment the doubtful moving point targets from the subimage remained by preprocessing. If doubtful moving point targets are detected by Optical Flow, the binocular system will be rotated to make the overlapped FOV direct to each of the doubtful moving point targets, and a new proposed space-time parallelizing determining approach is used to determine whether they are true moving point targets or not. Because the preprocessing can get rid of most of the low-frequency noise and background pixels, the calculating quantity of the sequential Optical Flow is reduced largely. At the same time, the new proposed determining algorithm is space-time parallel processing, which can decrease the determining time largely. The experiment results prove that the average detecting time of moving point targets of the proposed algorithm in the staring infrared binocular imaging system is reduced 50% than that of the traditional detecting approach, and if the SNR of processed images is no less than 3dB, the correct determining probability is 97%.

Number of references:13

Main heading:Targets

Controlled terms:Algorithms - Image analysis - Imaging systems - Infrared radiation - Probability - Vectors

Uncontrolled terms:Automatic Detection - Binocular Imaging System - Moving Point Target - Optical Flow

Classification code:723.2 Data Processing and Image Processing - 741.1 Light/Optics - 921.1 Algebra - 922.1 Probability Theory - 932.1.1 Particle Accelerators

Treatment:Theoretical (THR)

DOI:10.1117/12.668038

Database:Compendex

Accession number:20070410388856

Title:Design of a femtosecond electron diffraction system

Authors:Sheng, Lizhi (0); Zhao, Baosheng (0); Zhang, Xiaoqiu (0)

Corresponding author:Sheng, L.(shenglizhi80@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:35

Issue:11

Issue date:November 2006

Publication year:2006

Pages:1672-1675

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, China

Abstract:A new designed FED system was introduced in this article and the components of the system were illustrated. The factors that affected the temporal resolution of the system were analyzed in detail, such as the material and thickness of the photocathode, electric field near the cathode, focusing method, deflection sensitivity and sweeping speed. Finally, designed a FED system with 3 5 nm-thickness Ag film, 10 kV/mm electric field near the cathode. Magnetic focusing was used and the deflection sensitivity was 26.3 mm/kV, the sweeping speed could reach up to 1.45 × 108 m/s, so the total temporal resolution was reduced to about 500 fs.

Number of references:10

Database:Compendex

Accession number:2006149798104

Title:Characteristic investigation of ablative laser propulsion driven by nanosecond laser pulses

Authors:Zheng, Z.Y. (1); Zhang, J. (1); Lu, X. (1); Hao, Z.Q. (1); Yuan, X.H. (1); Wang, Z.H. (1); Wei, Z.Y. (1)

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

Source title:Applied Physics A: Materials Science and Processing

Abbreviated source title:Appl Phys A

Volume:83

Issue:2

Issue date:May 2006

Publication year:2006

Pages:329-332

Language:English

ISSN:09478396

E-ISSN:14320630

CODEN:APAMFC

Document type:Journal article (JA)

Publisher:Springer Verlag

Abstract:The momentum transfer and the specific impulse of the ablative laser propulsion of nanosecond laser irradiation on copper, lead, aluminum and graphite targets are investigated. The effects of the ambient pressure and laser focal spot sizes on the target momentum are measured. The results show that the target momentum strongly relates to the ambient pressure and target property. The highest target momentum about 2.28g&bullcm/s is obtained on lead targets under 1 atmospheric pressure. With the increase of the focal spot sizes, the specific impulse decreases. The highest specific impulse in vacuum is about 950 s on copper targets.

Number of references:17

Main heading:Laser pulses

Controlled terms:Aluminum - Atmospheric pressure - Copper - Graphite - Irradiation - Laser ablation - Lead - Vacuum

Uncontrolled terms:Ablative laser propulsion - Ambient pressure - Momentum transfer - Nanosecond laser irradiation

Classification code:744.1 Lasers, General - 641.2 Heat Transfer - 633 Vacuum Technology - 622.2 Radiation Effects - 546.1 Lead and Alloys - 544.1 Copper - 541.1 Aluminum - 482.2 Minerals - 443.1 Atmospheric Properties

Treatment:Experimental (EXP)

DOI:10.1007/s00339-006-3498-z

Database:Compendex

Accession number:20064610239897

Title:High power single-mode large-mode-area photonic crystal fiber laser with improved Fabry-Perot cavity

Authors:Li, Kang (1); Wang, Yishan (1); Zhao, Wei (1); Chen, Guofu (1); Peng, Qinjun (2); Cui, Dafu (2); Xu, Zuyan (2)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710068, China; (2) Key Laboratory of Optical Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China; (3) Graduate School, Chinese Academy of Sciences, Beijing 100039, China

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

Source title:Chinese Optics Letters

Abbreviated source title:Chin. Opt. Lett.

Volume:4

Issue:9

Issue date:September 2006

Publication year:2006

Pages:522-524

Language:English

ISSN:16717694

Document type:Journal article (JA)

Publisher:Science Press

Abstract:An Yb3+-doped double-clad large-mode-area photonic crystal fiber (LMA PCF) laser with 103-W single-mode continuous-wave output power is demonstrated using an improved Fabry-Perot (F-P) configuration. The slope efficiency of 83.2% and good beam quality (M2 = 1.2 ± 0.1) are achieved without any thermo-optical problems, dichroic mirror surface damage, and drop of the slope efficiency in this system.

Number of references:10

Main heading:Fiber lasers

Controlled terms:Mirrors - Surfaces

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

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

Treatment:Experimental (EXP)

Database:Compendex

Accession number:20064210187848

Title:Application of imaging processing implemented by DSP in spacial transient optical signal locating system

Authors:Wang, Hua (0); Wen, Desheng (0)

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:35

Issue:8

Issue date:August 2006

Publication year:2006

Pages:1272-1275

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, China

Abstract:The imaging characteristics of spacial transient optical signal are introduced. A digital image processing method based on the high-speed Digital Signal Processor for spacial transient optical signal locating is proposed in this paper. The image processing procedure includes filtrating the background and weak noises by threshold segmentation, removing the strong noises by target recognition based on the continuity of target signal and calculating the centroid of target signal at last. Experiment results show that processing speed and measurement accuracy of this method are high, and can satisfy the request of locating system.

Number of references:5

Database:Compendex

Accession number:20063610101644

Title:Analysis of the relationship between angle tolerance of Sagnac prism and the spectrum differentiation of the interferometer spectrometer

Authors:Chen, Liwu (0); Zhao, Baochang (0); Yang, Jianfeng (0); Chang, Lingying (0); Hong, Xinhua (0)

Corresponding author:Chen, L.(ch_yahu@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:35

Issue:7

Issue date:July 2006

Publication year:2006

Pages:1022-1027

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, China

Abstract:The principle of the Sagnac imaging spectrometer was introduced, and the Sagnac interferometers' working way in the imaging spectrometer was illustrated. In this thesis, the structure of the solid Sagnac interferometer was analyzed, and discussions were made based on the angle error directions formula in which the spectral resolution of imaging spectrometer required the angle direction error of FT lens have to be met. From three vertical directions the rays were studied which passed through the two prisms adhered by glue, the pathway variation of the rays in the entitative Sagnac interferometer and the relation between the spectral resolution and the angle deviation of the prisms were analysed; the angle error formulas of the entitative Sagnac interferometer prisms were deduced which could meet the requirement of the spectral resolution of the interferometer spectroscopy; examples are used to show the applying method of the formulas. If the dispersive induced by deforming of the shape of the prism and error of surfaces shape of the prism were neglected, only when the angle error of the prism was accounted, the angle error control of the prisms should be strictly required, generally it should be less than 20'.

Number of references:11

DOI:10.1088/0957-4484/17/4/029

Database:Compendex

Accession number:20070710428055

Title:Experimental study of figure-of-eight fiber lasers based on nonlinear amplifying loop mirror

Authors:Zhang, Wei (0); Chen, Guofu (0); Zhao, Wei (0); Wang, Yishan (0); Li, Zhe (0); Hou, Xun (0)

Corresponding author:Zhang, W.(wyx27210@163.com)

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:35

Issue:12

Issue date:December 2006

Publication year:2006

Pages:1808-1811

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, China

Abstract:The experimental study of the Yb3+-doped figure-of-eight cavity fiber laser using the nonlinear amplifying loop mirror (NALM) was reported, which was pumped by 976 nm semiconductor laser. The fiber laser can generate 0.2 mW average power of 43.6 ps pulse duration at a repetition of 18.2 MHz, and operating central wavelength was 1053.3 nm, spectrum width was 8 nm, though grating pairs to compensate the positive dispersion outside the cavity, as short as 616 fs output pulse was obtained after amplifying, which was to our knowledge the shortest pulse to date from this kind of Yb3+-doped fiber laser.

Number of references:14

Database:Compendex

Accession number:20064210187817

Title:Research of two-pump optical parametric amplification using photonic crystal fiber

Authors:Zhang, Ruibao (0); Liu, Hongjun (0); Yang, Yanlong (0); Zhao, Wei (0); Wang, Yishan (0); Chen, Guofu (0); Li, Yongfang (0); Dong, Shufu (0)

Corr. author affiliation:State Key Laboratory of Transient Optics 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:35

Issue:8

Issue date:August 2006

Publication year:2006

Pages:1137-1141

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, China

Abstract:Using the different dispersion characteristics of the photonic crystal fiber around different zero dispersion wavelengths, the photonic crystal fiber optical parametric amplification was researched with two-pump lasers around 780 nm and 1550 nm. Near 780 nm, the impacts of zero dispersion wavelength fluctuations on two-pump photonic crystal fiber optical parametric amplification were investigated, and numerical simulations show that the signal gain bandwidth will vary greatly as the zero dispersion wavelength has a very little change. When the wavelength separation between the two pumps decreased, the impacts of zero dispersion wavelength fluctuations on two-pump photonic crystal fiber optical parametric amplification were restrained to a large extent, but the amplifier bandwidth will have some reduction. Based on this principle, the dispersion flattening optical parametric amplification was designed around 1550 nm. With pump power of 10 W, the gain of fiber optical parametric amplification can reach 65 dB in only 5 m photonic crystal fiber, meanwhile the bandwidth reaches 420 nm, and the gain spectrum is very flattened.

Number of references:12

Database:Compendex

Accession number:2006159807633

Title:An automatic step adjustment method for average power analysis technique used in fiber amplifiers

Authors:Liu, Xue-Ming (1)

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

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

Source title:Optics Express

Abbreviated source title:Opt. Express

Volume:14

Issue:7

Issue date:April 2006

Publication year:2006

Pages:2589-2595

Language:English

ISSN:10944087

E-ISSN:10944087

Document type:Journal article (JA)

Publisher:Optical Society of America

Abstract:An automatic step adjustment (ASA) method for average power analysis (APA) technique used in fiber amplifiers is proposed in this paper for the first time. In comparison with the traditional APA technique, the proposed method has suggested two unique merits such as a higher order accuracy and an ASA mechanism, so that it can significantly shorten the computing time and improve the solution accuracy. A test example demonstrates that, by comparing to the APA technique, the proposed method increases the computing speed by more than a hundredfold under the same errors. By computing the model equations of erbium-doped fiber amplifiers, the numerical results show that our method can improve the solution accuracy by over two orders of magnitude at the same amplifying section number. The proposed method has the capacity to rapidly and effectively compute the model equations of fiber Raman amplifiers and semiconductor lasers. © 2006 Optical Society of America.

Number of references:28

Main heading:Fiber lasers

Controlled terms:Computability and decidability - Erbium - Mathematical models - Problem solving - Semiconductor lasers

Uncontrolled terms:Automatic step adjustment (ASA) - Average power analysis (APA) - Erbium-doped fiber amplifiers - Raman amplifiers

Classification code:547.2 Rare Earth Metals - 721.1 Computer Theory, Includes Formal Logic, Automata Theory, Switching Theory, Programming Theory - 723.4 Artificial Intelligence - 741.1.2 Fiber Optics - 744.4.1 Semiconductor Lasers - 921 Mathematics

Treatment:Theoretical (THR)

DOI:10.1364/OE.14.002589

Database:Compendex

Accession number:20141817674682

Title:Multi-wavelength erbium-doped fiber lasers on the assistance of high-nonlinear photonic-crystal fibers

Authors:Liu, Xueming (1); Zhao, Wei (1)

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

Source title:Optics InfoBase Conference Papers

Abbreviated source title:Opt.InfoBase Conf. Papers

Monograph title:International Conference on Ultrafast Phenomena, UP 2006

Issue date:2006

Publication year:2006

Language:English

E-ISSN:21622701

ISBN-10:1557528101

ISBN-13:9781557528100

Document type:Conference article (CA)

Conference name:International Conference on Ultrafast Phenomena, UP 2006

Conference date:July 31, 2006 - July 31, 2006

Conference location:Pacific Grove, CA, United states

Conference code:104814

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

Number of references:6

Main heading:Fiber lasers

Controlled terms:Crystal whiskers - Ultrafast phenomena

Uncontrolled terms:Multiwavelength erbium-doped fiber lasers - Room temperature - Self stability

Classification code:741.1.2 Fiber Optics - 744.9 Laser Applications - 801.4 Physical Chemistry

Database:Compendex

Accession number:2006179840622

Title:Method of getting wake character based image process technology

Authors:Zhao, Xiaofei (0); He, Junhua (0); Wei, Mingzhi (0); Chen, Liangyi (0)

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:35

Issue:3

Issue date:March 2006

Publication year:2006

Pages:443-446

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, China

Abstract:A new method, by which the bubble's size and density of the ship wake can be obtained by using image processing methods, was put forward. With this method, the wake images which are gotten by high-speed digital photographic equipments can be processed. The method has characteristics such as visibility, real time and high efficiency, and can be conveniently applied in actual engineering projects.

Number of references:9

Database:Compendex

Accession number:20063210056337

Title:Microwave measurement of dielectric film-enhanced Goos-Hanchen shift

Authors:Li, Chun-Fang (1); Yang, Xiao-Yan (3); Duan, Tao (1); Zhang, Ji-Yue (1)

Author affiliation:(1) State Key Laboratory of Transient Optics Technology, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710068, China; (2) Department of Physics, Shanghai University, Shanghai 200444, China; (3) Department of Optoelectronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China

Corresponding author:Li, C.-F.(chunfang@opt.ac.cn)

Source title:Zhongguo Jiguang/Chinese Journal of Lasers

Abbreviated source title:Zhongguo Jiguang

Volume:33

Issue:6

Issue date:June 2006

Publication year:2006

Pages:753-755

Language:Chinese

ISSN:02587025

CODEN:ZHJIDO

Document type:Journal article (JA)

Publisher:Science Press

Abstract:The Goos-Hnchen shift (GH shift) of reflected beam is resonance enhanced under some conditions when the incident beam transmits from the high-refractive index prism to the low-refractive index dielectric thin-film and is totally reflected from the film-air interface. In this paper, the GH shift versus the film thickness is directly measured by microwave technology. The experimental measurements confirm the theoretical prediction.

Number of references:25

Main heading:Dielectric films

Controlled terms:Interfaces (materials) - Microwave measurement - Refractive index - Resonance - Thin films

Uncontrolled terms:Goos Hanchen shift (GH shift) - High refractive index prism - Incident beam - Reflected beam - Resonance enhancement

Classification code:708.1 Dielectric Materials - 741.1 Light/Optics - 931.2 Physical Properties of Gases, Liquids and Solids

Treatment:Experimental (EXP)

DOI:10.1007/s00775-006-0123-8

Database:Compendex

Accession number:2006289996939

Title:Research of magnification method based on linear transform and nonlinear transform

Authors:Zhang, Daobing (0); Lu, Jianwei (0); Zhang, Hui (0); Wang, Hongqi (0); Liu, Bo (0)

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:35

Issue:6

Issue date:June 2006

Publication year:2006

Pages:957-960

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, China

Abstract:Nonlinear magnification can zoom in objects with global context. A nonlinear mapping function based on spherical geometry model is used and nonlinear image magnification can be achieved by this mapping function in image transform. For better viewing and to avoid distortion in the center of the viewing area, linear transform and nonlinear transform are combined. The results verify that it is an effective way to magnify image with keeping both local detail and global context.

Number of references:13

Database:Compendex

Accession number:2006229912999

Title:Auto-focusing method based on operator fusion in the system for coupling optical-taper with CCD

Authors:Zhang, Hongjian (0); Tian, Weijian (0); Zhang, Wei (0); Feng, Guilan (0); Wang, Li (0)

Corresponding author:Zhang, H.(zhj7800@opt.ac.cn)

Corr. author affiliation:Lab. of Information and Photonic Technology, State Key Lab. of Transient Optics Technology, Xi'an Institute of Optical and Precision mechanics of the Chinese Academy of Sciences, Xi'an 710068, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:35

Issue:4

Issue date:April 2006

Publication year:2006

Pages:635-637

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, China

Abstract:In this paper, an auto-focusing method is introduced to the system for coupling optical fiber-taper with CCD, a new image-evaluation function which based on the operator fusion technique is also proposed. By experiments, it is proved that the reliability of auto-focusing is enhanced, and a higher accuracy is achieved. This method successfully resolves the problem how to obtain the best efficiency of coupling during the coupling process.

Number of references:7

Database:Compendex

Accession number:2006289996938

Title:Detection and orientation system of lighting signal from space thunderbolt

Authors:Guo, Rui (0); Liu, Xuebin (0); Wen, Desheng (0); Cheng, Haibo (0); Li, Tao (0)

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:35

Issue:6

Issue date:June 2006

Publication year:2006

Pages:953-956

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, China

Abstract:The Lighting Detection and Orientation System is a lighting image sensor to detect the distribution and variability of total lighting. A digital image processor scheme with CPLD+DSP is used in the system, because CPLD is used as a complex programmable logic device and DSP is used as the abbreviation of digit signal processor. Image signal collection, decoder and memory are controlled by CPLD, which can reduce the area of circuit board and make the structure of circuit board easier; and large member of image data in real-time can be managed with DSP because of its high speed digital processor characteristic.

Number of references:7

Database:Compendex

Accession number:20064210187844

Title:Selective principle of fixed optical path difference of wind measurement interferometer

Authors:Wang, Li (0); Zhao, Baochang (0); Xiangli, Bin (0); Zhang, Chunmin (0); Qin, Aili (0)

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:35

Issue:8

Issue date:August 2006

Publication year:2006

Pages:1254-1258

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, China

Abstract:In order to determination fixed optical path difference of wind imaging interferometer, the principle of wind field measurement is described. The factors which influence on fixed optical path difference are analyzed. Three requirements including visibility, phase and near spectral lines in phase for WINDII(Wind Imaging Interferometer) are analyzed respectively and obtain quantificational relations between them and fixed optical path difference. Three conditions are considered together and conclude the selective principle of fixed optical path difference. At last the theory is applied to other wind imaging interferometers and proves their fixed path differences.

Number of references:11

Database:Compendex

Accession number:2006179840594

Title:Influences of N-DBR and double oxide-confined regions on the characteristics of electrical, optical and thermal fields in VCSEL

Authors:Liu, Lixin (0); Zhao, Hongdong (0); Niu, Hanben (0)

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

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:35

Issue:3

Issue date:March 2006

Publication year:2006

Pages:325-329

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, China

Abstract:In this paper, a direct coupling theoretical model in quasi-three-dimension for the gain-wave guide Vertical-Cavity Surface-Emitting Laser (VCSEL) has been created. With the finite-difference method, self-consistent solutions for the injected current density, carrier concentration, optical field and thermal conduction equations are realized to study the characteristics of electrical, optical and thermal fields distribution in VCSEL. A VCSEL with double oxide-confined regions is introduced. The influences of N-DBR layers and double oxide-confined regions on the characteristics of VCSEL are analyzed contrastively. The calculation results show that if N-DBR layers are not considered, there must be some errors to the practical VCSEL. The results also indicate that the structure of double oxide-confined regions in VCSEL has been improved greatly the characteristics of lasers, and it provides a method of reducing threshold current and controlling high-order modes.

Number of references:14

Database:Compendex

Accession number:20065110317616

Title:Investigation on spectroscopic properties of Yb3+-doped laser glasses

Authors:Li, Wei-Nan (0); Ding, Guang-Lei (0); Lu, Min (0); Xiang, Li-Bin (0)

Corresponding author:Li, W.-N.

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

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

Volume:26

Issue:10

Issue date:October 2006

Publication year:2006

Pages:1781-1784

Language:Chinese

ISSN:10000593

CODEN:GYGFED

Document type:Journal article (JA)

Publisher:Science Press, Beijing, China

Abstract:Yb3+-doped borosilicate glasses were prepared at high tempreture. The absorption spectra and fluorescence spectra were measured at room temperature. The integrated absorption cross section, stimulated emission cross section and fluorescent time were calculated. The results showed that the main peak wavelength was 975.15 nm in absorption spectra with one subpeak near 937.17 nm; emission peak was at 977.15 nm in fluorescence spectra with one subpeak near 997. 42 nm; with increasing the sample thickness from 0. 5 to 5 mm, luminescence intensity became greater, and the peak shifted to longer wavelength from 995. 79 to 999. 02 nm. The effective line width of fluorescence increased from 34. 64 to 54. 50 nm; Fluorescence lifetime decreased from 1. 04 to 1. 00 ms.

Number of references:10

Database:Compendex

Accession number:2006229912992

Title:A novel design of off-axis three-mirror reflective optical system

Authors:Bu, Jiangping (0); Tian, Weijian (0); Yang, Xiaojun (0); Sun, Aijuan (0); Liu, Wei (0)

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

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:35

Issue:4

Issue date:April 2006

Publication year:2006

Pages:608-610

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, China

Abstract:The optical system with compact structure, wide field of view and long focal length is discussed and an off-axis three-mirror reflective optical system with 1000 mm focal length, aperture of f/4 and 3° field of view is designed on the basis of geometry optical theory. Moreover, the effect of optimization method and parameters on the system structure and aberration is also discussed.

Number of references:7

Database:Compendex

Accession number:2006279983252

Title:Multiple energy transfers in rare earth complex-doped SiO<inf>2</inf> spheres

Authors:Huang, Changqing (1); Sun, Ting (1); Tian, Weijian (1); Zhao, Baoping (1)

Author affiliation:(1) Laboratory of Information and Photonics, Chinese Academy of Sciences, Xi'an Institute of Optics and Precision Mechanism, Xi'an 710068, China; (2) Graduate School, Chinese Academy of Sciences, Beijing 100039, China

Corresponding author:Huang, C.(cqhuang@opt.ac.cn)

Source title:Journal of Rare Earths

Abbreviated source title:J Rare Earth

Volume:24

Issue:2

Issue date:April 2006

Publication year:2006

Pages:134-137

Language:English

ISSN:10020721

CODEN:JREAE6

Document type:Journal article (JA)

Publisher:Chinese Rare Earth Society

Abstract:Silica spheres doped with Eu(TTFA)<inf>3</inf> and/or Sm(TTFA)<inf>3</inf> were synthesized by using the modified Sto&die;ber method. The transmission electron microscope image reveals that the hybrid spheres have smooth surfaces and an average diameter of about 210 nm. Fluorescence spectrometer was used to analyze the fluorescence properties of hybrid spheres. The results show that multiple energy transfer processes are simultaneously achieved in the same samples co-doped with Eu(TTFA)<inf>3</inf> and Sm(TTFA)<inf>3</inf>, namely between the ligand and Eu3+ ion, the ligand and Sm3+ ion, and Sm3+ ion and Eu3+ ion. Energy transfer of Sm3+&rarrEu3+ in the hybrid spheres leads to fluorescence enhancement of Eu3+ emission by approximately an order of magnitude. The lifetimes of the hybrid spheres were also measured.

Number of references:14

Main heading:Rare earths

Controlled terms:Energy transfer - Fluorescence - Optics - Photoluminescence - Silica - Transmission electron microscopy

Uncontrolled terms:Sensitization - Silica hybrid spheres

Classification code:525.4 Energy Losses (industrial and residential) - 547.2 Rare Earth Metals - 741.1 Light/Optics

Treatment:Theoretical (THR); Experimental (EXP)

DOI:10.1016/S1002-0721(06)60080-X

Database:Compendex

Accession number:2006139790518

Title:Image mosaics system based on TMS320DM642

Authors:Gui-Lan, Feng (1); Wei-Jian, Tian (1); You-Shan, Qu (1); Wei, Ge (1)

Author affiliation:(1) Xi'An Institute of Optics and Precision Mechanics, CAS, Xi'an, 710068, China; (2) Graduate School, CAS, Beijing, 100039, China

Corresponding author:Gui-Lan, F.

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

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:6027 II

Monograph title:ICO20: Optical Information Processing

Issue date:2006

Publication year:2006

Article number:60272U

Language:English

ISSN:0277786X

CODEN:PSISDG

Document type:Conference article (CA)

Conference name:ICO20: Optical Information Processing

Conference date:August 21, 2005 - August 26, 2005

Conference location:Changchun, China

Conference code:66929

Publisher:SPIE

Abstract:When the size of a needing scene is beyond the scope of an optical sensor, it is difficult to take the whole scene at the same time. In this case, the needing scene can be captured by several optical sensors at one time, the overlapped images can be taken. Using the images, the whole scene is reproduced. This paper presents a robust image mosaics method that employs wavelet transform technique. The new developed registration and fusion algorithm implemented automatically and simultaneously without known camera motion and focal length. Wavelet transform guarantees not only a global optimal solution, but also scale and transform invariance for image alignment. This feature guarantees that the scheme has higher performance than the traditional mosaic techniques. In the same time, the hardware structure and the software designing principle of the Image Mosaics System (IMS) based on the Digital Signal Processor are expounded. To further improve the image mosaics quality, an image enhancement approach is also employed. In the paper, the concept, algorithm and experiments are described. The test results showed that the IMS is efficient and accurate for acquisition of seamless mosaic of the overlapped images, and at the same time, is adaptive to the real-time requirements. An adaptive resolution, seamless and a wide field of view image can be acquired.

Number of references:15

Main heading:Image analysis

Controlled terms:Algorithms - Computer software - Digital signal processing - Image enhancement - Image quality - Optical sensors - Wavelet transforms

Uncontrolled terms:Adaptive resolution - Focal length - Image mosaics system - Image registration

Classification code:716.1 Information Theory and Signal Processing - 723.2 Data Processing and Image Processing - 741 Light, Optics and Optical Devices - 921.3 Mathematical Transformations

Treatment:Theoretical (THR)

DOI:10.1117/12.668302

Database:Compendex

Accession number:20063010029281

Title:Depolarizer for multiple longitudinal mode LDs

Authors:Liu, Ji-Hong (1); Fang, Qiang (3); Yin, Ya-Fang (2)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710068, China; (2) Graduate School of the Chinese Academy of Sciences, Beijing 100039, China; (3) Department of Electronic and Information Engineering, Xi'an Institute of Posts and Telecommunications, Xi'an 710061, China

Corresponding author:Liu, J.-H.(ljh_ong@sina.com.cn)

Source title:Guangdianzi Jiguang/Journal of Optoelectronics Laser

Abbreviated source title:Guangdianzi Jiguang

Volume:17

Issue:5

Issue date:May 2006

Publication year:2006

Pages:542-545

Language:Chinese

ISSN:10050086

CODEN:GUJIE9

Document type:Journal article (JA)

Publisher:Board of Optronics Lasers

Abstract:The multiple longitudinal mode (MLM) laser sources can be depolarized by a crystal waveplate with moderate thickness. For two available MLM LDs, the relationship between DOP of depolarized light and optical path difference (OPD), which is produced by the waveplate between two orthogonal polarized components of incident light, is numerically calculated. An experimental depolarizer installation is proposed in which OPD can be adjusted continuously in a large range. The theoretical analyses and experimental results show that there is the most appropriate thickness of waveplate for a specific MLM laser source, and this thickness is decided by center wavelength and the space between two longitudinal modes. Moreover, DOP becomes lower if the symmetry of spectrum is well and the number of relative large longitudinal mode increases.

Number of references:7

Main heading:Optical devices

Controlled terms:Birefringence - Calculations - Components - Diodes - Laser modes - Light polarization - Light sources

Uncontrolled terms:Crystal waveplate - Degree of polarization (DOP) - Depolarizer - Incident light - Laser sources - Multiple longitudinal mode laser diodes(MLM LDs) - Optical path difference (OPD)

Classification code:714.2 Semiconductor Devices and Integrated Circuits - 741.1 Light/Optics - 741.3 Optical Devices and Systems - 744 Lasers - 921 Mathematics

Treatment:Experimental (EXP)

Database:Compendex

Accession number:20065110325803

Title:Characteristics of multiple filaments generated by femtosecond laser pulses in air: Prefocused versus free propagation

Authors:Hao, Zuoqiang (1); Zhang, Jie (1); Zhang, Zhe (1); Yuan, Xiaohui (1); Zheng, Zhiyuan (1); Lu, Xin (1); Jin, Zhan (1); Wang, Zhaohua (1); Zhong, Jiayong (1); Liu, Yunquan (1)

Author affiliation:(1) Laboratory of Optical Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100080, 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) National Astronomical Observatories, Chinese Academy of Science, Beijing 100012, China

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

Source title:Physical Review E - Statistical, Nonlinear, and Soft Matter Physics

Abbreviated source title:Phys. Rev. E Stat. Nonlinear Soft Matter Phys.

Volume:74

Issue:6

Issue date:2006

Publication year:2006

Article number:066402

Language:English

ISSN:15393755

E-ISSN:15502376

CODEN:PLEEE8

Document type:Journal article (JA)

Publisher:American Physical Society

Abstract:The characteristics of the multiple filaments formed by prefocused and freely propagating femtosecond laser pulses are investigated and compared. It is shown in our experiments that the diameter, length, stability, and interaction for the two cases can be quite different. The filaments formed by prefocused beam indicate dynamic spatial evolution with higher laser intensity and electron density. They have a typical diameter of 100 μm are of shorter length. In the free propagation case, the filaments exhibit interesting properties such as hundred-meter propagation distance and mm-size diameter. Moreover, only the interaction of the filaments with the energy background affects the evolution of the filaments. Filament-filament interactions such as the filament splitting and merging were not observed in this case. © 2006 The American Physical Society.

Number of references:36

Main heading:Laser pulses

Controlled terms:Carrier concentration - Laser beams - Light propagation

Uncontrolled terms:Dynamic spatial evolution - Filament splitting - Laser intensity

Classification code:701.1 Electricity: Basic Concepts and Phenomena - 741.1 Light/Optics - 744.1 Lasers, General - 744.8 Laser Beam Interactions

Treatment:Theoretical (THR); Experimental (EXP)

DOI:10.1103/PhysRevE.74.066402

Database:Compendex

Accession number:20064510226422

Title:Photosensitive barium strontium titanate gel films and their fine-patterning

Authors:Zhang, Weihua (1); Zhao, Gaoyang (1); Li, Ying (1); Zhao, Wei (2)

Corresponding author:Zhang, W.(zhwhxaut@xaut.edu.cn)

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

Abbreviated source title:Pan Tao Ti Hsueh Pao

Volume:27

Issue:9

Issue date:September 2006

Publication year:2006

Pages:1590-1594

Language:Chinese

ISSN:02534177

CODEN:PTTPDZ

Document type:Journal article (JA)

Publisher:Science Press

Abstract:A method is developed to fabricate fine patterns of BST films. With methanol as solvent, barium acetate, strontium chloride, and tetrabutyl titanate as starting materials, lactic acid as catalyzer, and Benzoylacetone (BzAcH) as chemical modifier, the photosensitive BST sols and their gel films with a chelate structure of &equiv; Ti-BzAc are prepared, both of which have good chemical stability at room atmosphere. The UV absorption peak of the chelate structure is located at about 358 nm.The chelate structure can be dissociated using UV light from a high-pressure mercury lamp to irradiate the gel films, which shows the photosensitivity of the gel films. Due to the dissociation of the chelate structure, the solubility of the gel films in alcohol is remarkably decreased. Utilizing the photosensitivity, the BST gel films are irradiated by UV light through a pattern mask and leached by alcohol. The fine patterning of BST gel film is thus prepared. After annealing at 600°C, the fine patterning of BST films with perovskite structure and ferroelectric properties can be obtained.

Number of references:10

Main heading:Ferroelectric materials

Controlled terms:Annealing - Light absorption - Mercury vapor lamps - Methanol - Perovskite - Photosensitivity - Sol-gels

Uncontrolled terms:Barium acetate - Barium strontium titanate - Chemical stability - Ferroelectric films - Fine patterning - High pressure mercury lamp - Starting materials - Strontium chloride - Tetrabutyl titanate

Classification code:537.1 Heat Treatment Processes - 707.2 Electric Lamps - 708.1 Dielectric Materials - 741.1 Light/Optics - 801.3 Colloid Chemistry

Treatment:Experimental (EXP)

Database:Compendex

Accession number:20070710428060

Title:Design of a femto-second streak tube

Authors:Tian, Jinshou (0); Bai, Yonglin (0); Liu, Baiyu (0); Ouyang, Xian (0); Bai, Xiaohong (0); Yang, Wenzheng (0); Wang, Chen (0)

Corresponding author:Tian, J.(tianjs@hotmail.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:35

Issue:12

Issue date:December 2006

Publication year:2006

Pages:1832-1836

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, China

Abstract:A femto-streak image tube has been designed, in which a static electrode was used as the focus lens. The distribution of the initial kinetic energy, the initial azimuth angle, elevation angle and position of the photoelectrons were sampled with Monte Carlo method. The spatial electric field strength was calculated with Finite Difference method, and the trajectories of 3000 photoelectrons were calculated with fourth Runge-Kutta method. After analysis the spatial and temporal distribution of the electrons on the optimum plane, the basic character parameters such as the spatial transfer function and temporal resolution et al of the image tube were provided, the total temporal resolution of the image tube was expected to reach to 290.4 fs.

Number of references:16

Database:Compendex

Accession number:20070410388881

Title:Image processing method used in flying object's pose measurement

Authors:Wang, Feng (0); Cao, Jianzhong (0); Zhou, Renkui (0); Liu, Bo (0); Liang, Yitao (0); Zou, Yongxing (0); Luo, Xiujuan (0); Che, Rong (0)

Corresponding author:Wang, F.(wfmail@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:35

Issue:11

Issue date:November 2006

Publication year:2006

Pages:1780-1783

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, China

Abstract:A method for measuring flying object's 3D pose using optical images was introduced. As an important step of the method, the image s processing procedure was researched and explained in detail. The validity of image processing method was tested and verified by applying to a self-made simulative target. The results consistently show that the method has high degree of accuracy and is suitable for practical need.

Number of references:9

Database:Compendex

Accession number:20064010143224

Title:Soliton-induced waveguides in photorefractive photovoltaic materials

Authors:Lu, Keqing (1); Zhao, Wei (1); Yang, Yanlong (1); Yang, Yang (1); Liu, Xueming (1); Zhang, Yanpeng (2); Xu, Jingjun (3)

Corresponding author:Lu, K.(kq.lu@263.net)

Source title:Journal of Modern Optics

Abbreviated source title:J. Mod. Opt.

Volume:53

Issue:15

Issue date:October 15, 2006

Publication year:2006

Pages:2137-2151

Language:English

ISSN:09500340

E-ISSN:13623044

CODEN:JMOPEW

Document type:Journal article (JA)

Publisher:Taylor and Francis Ltd.

Abstract:Waveguides induced by one-dimensional spatial photovoltaic solitons are investigated in both self-defocusing-type and self-focusing-type photorefractive photovoltaic materials. The number of possible guided modes in a waveguide induced by a bright photovoltaic soliton is obtained using numerical techniques. This number of guided modes increases monotonically with increasing intensity ratio, which is the ratio between the peak intensity of the soliton and the sum of the background illumination and the dark irradiance. On the other hand, waveguides induced by dark photovoltaic solitons are always single mode for all intensity ratios, and the higher the intensity ratio, the more confined is the optical energy near the centre of the dark photovoltaic soliton. Relevant examples are provided where photorefractive photovoltaic materials are of self-defocusing and self-focusing types. The properties of soliton-induced waveguides in both self-defocusing-type and self-focusing-type materials are also discussed.

Number of references:31

Main heading:Optical waveguides

Controlled terms:Engineering - Irradiation - Light refraction - Lighting - Numerical methods - Photovoltaic cells - Solitons

Uncontrolled terms:Dark irradiance - Optical energy - Photovoltaic materials - Photovoltaic solitons

Classification code:921.6 Numerical Methods - 921.1 Algebra - 901 Engineering Profession - 741.3 Optical Devices and Systems - 741.1 Light/Optics - 714.3 Waveguides - 714.2 Semiconductor Devices and Integrated Circuits - 707 Illuminating Engineering - 622.2 Radiation Effects

Treatment:Experimental (EXP)

DOI:10.1080/09500340600809145

Database:Compendex

Accession number:20083811559950

Title:Resonance fluorescence of a driven V-type three-level atom

Authors:Zhu, Hai-Yan (1); Zhang, Tong-Yi (1); Zhao, Wei (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precise Mechanics, Chinese Academy of Science, 322 West Youyi Road, Xi'an, 710068, China

Corresponding author:Zhu, H.-Y.(haiyanvvv@126.com)

Source title:IRMMW-THz 2006 - 31st International Conference on Infrared and Millimeter Waves and 14th International Conference on Terahertz Electronics

Abbreviated source title:IRMMW-THz - Int. Conf. Infrared Millimeter Waves Int. Conf. Terahertz Electron.

Monograph title:IRMMW-THz 2006 - 31st International Conference on Infrared and Millimeter Waves and 14th International Conference on Terahertz Electronics

Issue date:2006

Publication year:2006

Pages:484

Article number:4222426

Language:English

ISBN-10:1424404002

ISBN-13:9781424404001

Document type:Conference article (CA)

Conference name:IRMMW-THz 2006 - 31st International Conference on Infrared and Millimeter Waves and 14th International Conference on Terahertz Electronics

Conference date:September 18, 2006 - September 22, 2006

Conference location:Shanghai, China

Conference code:73222

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

Abstract:We investigate the resonance fluorescence spectrum of a three-level atom driven by two coherent laser fields in a V-type three levels with emphasis on the detuning effect. In the presence of the detuning of the first laser from exact resonance, there emerge some new structures in the resonance fluorescence spectrum. By applying the dressed-atom theory, we give an explanation for these interesting phenomena. ©2006 IEEE.

Number of references:3

Main heading:Atomic spectroscopy

Controlled terms:Atomic physics - Atoms - Electromagnetic waves - Fluorescence - Light emission - Luminescence - Millimeter wave devices - Millimeter waves

Uncontrolled terms:International conferences - Resonance fluorescence spectrum

Classification code:711 Electromagnetic Waves - 714 Electronic Components and Tubes - 715 Electronic Equipment, General Purpose and Industrial - 741.1 Light/Optics - 801 Chemistry - 931.3 Atomic and Molecular Physics

DOI:10.1109/ICIMW.2006.368692

Database:Compendex

Accession number:20070310365446

Title:Photoluminescence of multiwalled carbon nanotubes excited at different wavelengths

Authors:Yuan, Yan-Hong (1); Miao, Run-Cai (3); Bai, Jin-Tao (2); Hou, Xun (2)

Author affiliation:(1) Department of Arts and Science, Shanghai Dianji University, Shanghai 200240, China; (2) Institute of Photonics and Photon-Technology, Provincial Key Laboratory of Photoelectronic Technology, Northwest University, Xi'an 710069, China; (3) Shaanxi Yulin College, Yulin 719000, China; (4) 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:Yuan, Y.-H.(xjcjyyh@163.com)

Source title:Chinese Physics

Abbreviated source title:Chin. Phys.

Volume:15

Issue:11

Issue date:November 1, 2006

Publication year:2006

Pages:2761-2764

Article number:051

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 the multiwalled carbon nanotubes (MWNTs) were synthesized by a chemical vapour deposition and the SEM graph shows that the sample has good construction. The micro-Raman spectrum shows the characteristic line of the MWNTs and an additional line produced by the defects on the outer surface of MWNTs. The photoluminescence (PL) spectra observed experimentally are variable under different excitation wavelengths and the strong excitation wavelength dependence of luminescence indicates a distribution of emitters which include electron π in excited states and the Van Hove singularities. The absorption spectra confirm the transition channels which are consistent with the PL emission. © 2006 Chin. Phys. Soc. and IOP Publishing Ltd.

Number of references:20

Main heading:Carbon nanotubes

Controlled terms:Chemical vapor deposition - Electric excitation - Electron emission - Photoluminescence - Scanning electron microscopy - Spectrum analysis

Uncontrolled terms:Excitation wavelength - Multiwalled carbon nanotubes - Transition channels

Classification code:701.1 Electricity: Basic Concepts and Phenomena - 714.1 Electron Tubes - 741.1 Light/Optics - 802.2 Chemical Reactions - 933.1 Crystalline Solids - 941 Acoustical and Optical Measuring Instruments

Treatment:Experimental (EXP)

DOI:10.1088/1009-1963/15/11/051

Database:Compendex

Accession number:2006209882058

Title:High repetition rate picosecond streak camera for two-photon excited fluorescence lifetime microscopic imaging

Authors:Liu, Lixin (1); Qu, Junle (3); Lin, Ziyang (3); Chen, Danni (3); Hu, Tao (3); Guo, Baoping (3); Niu, Hanben (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:Liu, L.(lilyliulixin@163.com)

Source title:Guangxue Xuebao/Acta Optica Sinica

Abbreviated source title:Guangxue Xuebao

Volume:26

Issue:3

Issue date:March 2006

Publication year:2006

Pages:373-378

Language:Chinese

ISSN:02532239

CODEN:GUXUDC

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:A two-photon excited fluorescence lifetime microscopic imaging system based on a newly-developed high repetition rate picosecond streak camera is presented. The high repetition rate picosecond streak camera is the emphasis for introduction. In order to increase the measurable sweeping range and maintain high temporal resolution as well, and in order to realize high temporally resolved sampling measurement in two dimensions to improve sampling speed and exploit effectively the advantages of the streak camera, authors specially designed and developed a streak image tube with large area and high temporal resolution and a ramp voltage streak circuit with repetition rate up to 1 MHz. The streak camera based on the key components above mentioned is characterized with high repetition rate, tunable sweep rate, high temporal resolution, large effective area of work, low nonlinearity and small triggering jitter. A Ti:sapphire laser provides mode-locked, ultrafast femtosecond pulses with a fundamental frequency of 76 MHz which is reduced to 1 MHz with a pulse picker. The temporal resolution, sweep rate and nonlinearity are calibrated with a tunable delay generator and etalons. Temporal resolution of the system is 6.5 ps, nonlinearity is 2.60%, and the measurable time range is from ten picoseconds to tens of nanoseconds. Streak images of Rhodamine 6G and Coumarin 314 are obtained and the results agree well with those reported in the literatures.

Number of references:18

Main heading:Streak cameras

Controlled terms:Etalons - Fluorescence - Imaging systems - Laser pulses - Photons - Speed

Uncontrolled terms:Coumarin 314 - Fluorescence lifetime imaging - Nonlinearity - Picosecond streak camera - Rhodamine 6G - Sweep speed - Temporal resolution - Ti:sapphire laser - Triggering jitter - Tunable sweep rate - Ultrafast femtosecond pulses

Classification code:741 Light, Optics and Optical Devices - 742.2 Photographic Equipment - 744.1 Lasers, General - 931.3 Atomic and Molecular Physics - 941.3 Optical Instruments

Treatment:Applications (APP); Experimental (EXP)

Database:Compendex

Accession number:20063310068543

Title:Parallel processing for femto-laser microfabrication

Authors:Cao, Wei-Li (1); Xiao, Shi-Zhou (1); Guo, Rui (1); Cheng, Guang-Hua (2); Huang, Wen-Hao (1)

Author affiliation:(1) SPM Laboratory, Department of Precision Machinery and Precision Instrumentation, University of Science and Technology of China, Hefei 230027, China; (2) State Key Laboratory of Transient Optics Technology, Xi'an Institute of Optics and Precision, Xi'an 710068, China

Corresponding author:Cao, W.-L.(cwlgrin@mail.ustc.edu.cn)

Source title:Nami Jishu yu Jingmi Gongcheng/Nanotechnology and Precision Engineering

Abbreviated source title:Nami Jishu yu Jingmi Gongcheng

Volume:4

Issue:2

Issue date:June 2006

Publication year:2006

Pages:115-117

Language:Chinese

ISSN:16726030

Document type:Journal article (JA)

Publisher:Editorial Office of Nanotechnology and

Abstract:More and more attention is paid to femto-laser microfabrication due to its unique technological features, such as fabrication ability of true 3D microstructures and sub-micron resolution. But low efficiency is the disadvantage of this technology. To increase the efficiency, a system for parallel fabrication was built up using a microlen array to produce multiple spots, and the parallel femto-laser fabrication was preliminarily realized. Two-dimensional multiple structures were manufactured, such as micro letters demonstrated as examples of mass production, from the photopolymerizable resin and glass, and the single point resolution is 1.25 μm. The coherence and resolution are analysed according to the results of the experiment, and the method to increase the coherence and resolution is brought forward.

Number of references:7

Main heading:Laser applications

Controlled terms:Fabrication - Focusing - Laser beams - Micromachining - Parallel processing systems - Three dimensional

Uncontrolled terms:Femtolaser microfabrication - Microlen array - Multiple point focusing - Parallel processing - Photopolymerizable resin

Classification code:604.2 Machining Operations - 722.4 Digital Computers and Systems - 741.1 Light/Optics - 744.8 Laser Beam Interactions - 744.9 Laser Applications

Treatment:Applications (APP); Experimental (EXP)

DOI:10.1002/pros.20322

Database:Compendex

Accession number:20064110156954

Title:A fast electron jet along target surface irradiated by femtosecond laser pulses

Authors:Li, Y.T. (1); Yuan, X.H. (1); Zheng, Z.Y. (1); Xu, M.H. (1); Ma, Y.Y. (1); Chen, M. (1); Liang, W.X. (1); Yu, Q.Z. (1); Sheng, Z.M. (1); Wang, Z.H. (1); Wei, Z.Y. (1); Zhang, J. (1)

Corresponding author:Li, Y.T.

Source title:Journal De Physique. IV : JP

Abbreviated source title:J Phy IV JP

Volume:133

Monograph title:Proceedings - IFSA 2005: Inertial Fusion Sciences and Applications 2005

Issue date:June 2006

Publication year:2006

Pages:413-416

Language:English

ISSN:11554339

E-ISSN:17647177

CODEN:JPICEI

ISBN-10:2868839258

ISBN-13:9782868839251

Document type:Conference article (CA)

Conference name:IFSA 2005: Inertial Fusion Sciences and Applications 2005

Conference date:September 4, 2005 - September 9, 2005

Conference location:Biarritz, France

Conference code:68245

Sponsor:Centre National Recherche Scientifique, France; Commissariat a l'Energie Atomique, France; Conseil Regional d'Aquitaine, France; Universite Bordeaux, France; Institut Lasers et Plasmas, France

Publisher:EDP Sciences

Abstract:We demonstrate a fast electron jet along the target surface in the interaction of a femtosecond laser pulse with a solid foil. Numerical simulations show that the jet is formed due to the confinement of the surface quasistatic electromagnetic fields induced by the fast electrons themselves. The results suggest an easy way to obtain a well collimated, highly directional and stable laser-based fast electron source with a ultrashort pulse duration. © EDP Sciences.

Number of references:17

Main heading:Plasma jets

Controlled terms:Beam plasma interactions - Computer simulation - Electromagnetic fields - Electron beams - Irradiation - Target drones - Ultrashort pulses

Uncontrolled terms:Femtosecond laser pulses - Laser based fast electron sources - Solid foils - Ultrashort pulse duration

Classification code:652.1.2 Military Aircraft - 723.5 Computer Applications - 931.3 Atomic and Molecular Physics - 932.1 High Energy Physics - 932.3 Plasma Physics

Treatment:Theoretical (THR); Experimental (EXP)

DOI:10.1051/jp4:2006133083

Database:Compendex

Accession number:20070310373036

Title:Algorithm of opto-electronic theodolite intersection based on Gauss-Newton method

Authors:Lu, Shuai-Hua (0); Su, Xiu-Qin (0); Zhang, Zhan-Peng (0); Xiang, Jing-Bo (0)

Corresponding author:Lu, S.-H.(iwsal@126.com)

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

Source title:Guangdian Gongcheng/Opto-Electronic Engineering

Abbreviated source title:Guangdian Gongcheng

Volume:33

Issue:11

Issue date:November 2006

Publication year:2006

Pages:22-25

Language:Chinese

ISSN:1003501X

CODEN:GUGOEC

Document type:Journal article (JA)

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

Abstract:In the typical shooting range measuring system, there are 3 or 4 theodolites placed on different spots to do tracking and measuring. But when we do intersection, only 2 of them are used by Two Station Intersection (TSI), which causes data wasting and low data processing accuracy. This article proposes a new method named Multiple Station Intersection (MSI) to solve that problem. MSI supposes that all the theodolites have equal importance in intersection, and MSI gets the Hesse Matrix of the intersection equation, then MSI do Gauss-Newton iteration and get the accurate intersection result. In simulation experiment, we do both TSI and MSI with the same group of data. Experiment results show that MSI have excellent convergence and accuracy.

Number of references:6

Database:Compendex

Accession number:20064510221235

Title:Effects of shock waves on spatial distribution of proton beams in ultrashort laser-foil interactions

Authors:Xu, M.H. (1); Li, Y.T. (1); Yuan, X.H. (1); Yu, Q.Z. (1); Wang, S.J. (1); Zhao, W. (2); Wen, X.L. (3); Wang, G.C. (3); Jiao, C.Y. (3); He, Y.L. (3); Zhang, S.G. (3); Wang, X.X. (3); Huang, W.Z. (3); Gu, Y.Q. (3); Zhang, J. (1)

Author affiliation:(1) Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100080, 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; (3) National Key Laboratory of Laser Fusion, China Academy of Engineering Physics, Mianyang 621900, China; (4) Atomic and Molecular Physics Institute, Sichuan University, Chengdu 610065, China

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

Source title:Physics of Plasmas

Abbreviated source title:Phys. Plasmas

Volume:13

Issue:10

Issue date:2006

Publication year:2006

Article number:104507

Language:English

ISSN:1070664X

CODEN:PHPAEN

Document type:Journal article (JA)

Publisher:American Institute of Physics Inc.

Abstract:The characteristics of proton beam generated in the interaction of an ultrashort laser pulse with a large prepulse with solid foils are experimentally investigated. It is found that the proton beam emitted from the rear surface is not well collimated, and a "ring-like" structure with some "burst-like" angular modulation is presented in the spatial distribution. The divergence of the proton beam reduces significantly when the laser intensity is decreased. The "burst-like" modulation gradually fades out for the thicker target. It is believed that the large divergence angle and the modulated ring structure are caused by the shock wave induced by the large laser prepulse. A one-dimensional hydrodynamic code, MED103, is used to simulate the behavior of the shock wave produced by the prepulse. The simulation indicates that the rear surface of the foil target is significantly modified by the shock wave, consequently resulting in the experimental observations. © 2006 American Institute of Physics.

Number of references:25

Main heading:Proton beams

Controlled terms:Computer simulation - Hydrodynamics - Light emission - Modulation - Optical collimators - Shock waves - Ultrashort pulses

Uncontrolled terms:Laser foil interactions - Rear surface - Solid foils - Spatial distribution

Classification code:631.1.1 Liquid Dynamics - 723.5 Computer Applications - 741.1 Light/Optics - 741.3 Optical Devices and Systems - 931 Classical Physics; Quantum Theory; Relativity - 932 High Energy Physics; Nuclear Physics; Plasma Physics

Treatment:Experimental (EXP)

DOI:10.1063/1.2358971

Database:Compendex

Accession number:20064210182652

Title:Time-resolved two-photon excited fluorescence spectroscopy based on a streak camera

Authors:Liu, Lixin (1); Qu, Junle (2); Chen, Danni (2); Lin, Ziyang (2); Xu, Gaixia (2); Guo, Baoping (2); Niu, Hanben (2)

Author affiliation:(1) Xi'an Institute of Optics and Precession Mechanics, Chinese Academy of Sciences, Xi'an, 710068, China; (2) Institute of Optoelectronics, Shenzhen University, Shenzhen, 518060, China

Corresponding author:Liu, L.(lilyliulixin@163.com)

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

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

Volume:6047 II

Monograph title:Fourth International Conference on Photonics and Imaging in Biology and Medicine

Issue date:2006

Publication year:2006

Article number:60472K

Language:English

ISSN:16057422

ISBN-10:081946080X

ISBN-13:9780819460806

Document type:Conference article (CA)

Conference name:4th International Conference on Photonics and Imaging in Biology and Medicine

Conference date:September 3, 2006 - September 6, 2006

Conference location:Tianjin, China

Conference code:68312

Publisher:SPIE

Abstract:Combination of fluorescence spectral and temporal resolutions can improve the sensitivity and specificity of biomedical diagnostics. In this paper, we present the development of a time-resolved two-photon excited fluorescence spectroscopy system that consists of a Ti: Sapphire femtosecond laser, a fluorescence microscope objective, a prism spectrophotometer and a high repetition rate picosecond streak camera. The streak camera and the time-resolved fluorescence spectroscopy system have been calibrated with an F-P etalon and a spectral line lamp respectively. Validation experiment of the system is also performed on two standard fluorescent dyes (Rhodamine 6G and Coumarin 314), and the results agree well with those reported in the literatures. Preliminary experimental results on autofluorescence spectra and lifetimes of freshly picked leaves and in vivo human skin are also presented, which demonstrates the potential applications of this system in tissue discrimination and clinical diagnostics.

Number of references:23

Main heading:Biomedical engineering

Controlled terms:Fluorescence - Lasers - Optical resolving power - Photons - Spectrophotometers - Streak cameras

Uncontrolled terms:Fluorescence lifetime - Fluorescence spectroscopy - Prism spectrophotometers - Two-photon excited fluorescence

Classification code:461.1 Biomedical Engineering - 741.1 Light/Optics - 741.3 Optical Devices and Systems - 742.2 Photographic Equipment - 744.1 Lasers, General - 931.3 Atomic and Molecular Physics

Treatment:Theoretical (THR)

DOI:10.1117/12.710974

Database:Compendex

Accession number:20064910287948

Title:Room-temperature dual-wavelength erbium-doped fibre laser based on a sampled fibre Bragg grating and a photonic Robin Hood

Authors:Liu, Xueming (1); Zhao, Wei (1); Lu, Keqing (1); Zhang, Tongyi (1); Sun, Chuandong (1); Wang, Yishan (1); Hou, Xun (1); Chen, Guofu (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 Modern Optics

Abbreviated source title:J. Mod. Opt.

Volume:53

Issue:18

Issue date:December 15, 2006

Publication year:2006

Pages:2785-2792

Language:English

ISSN:09500340

E-ISSN:13623044

CODEN:JMOPEW

Document type:Journal article (JA)

Publisher:Taylor and Francis Ltd.

Abstract:With the assistance of a kind of photonic Robin Hood that is originated from four-wave mixing in a dispersion-flattened high-nonlinearity photonic-crystal fibre, a novel dual-wavelength erbium-doped fibre (EDF) laser is proposed and demonstrated by using a sampled fibre Bragg grating. The experiments show that, due to the contribution of the photonic Robin Hood, the proposed fibre laser has the advantage of excellent uniformity, high stability and stable operation at room temperature. Our dual-wavelength EDF laser has the unique merit that the wavelength spacing remains unchanged when tuning the two wavelengths of laser, and this laser is simpler and more stable than the laser reported by Liu et al. [Opt. Express, 13 142 (2005)].

Number of references:29

Main heading:Fiber lasers

Controlled terms:Doping (additives) - Erbium - Fiber Bragg gratings - Four wave mixing

Uncontrolled terms:Erbium doped fiber (EDF) - Photonic Robin Hood - Wavelength spacing

Classification code:547.2 Rare Earth Metals - 712.1 Semiconducting Materials - 741.1 Light/Optics - 744.4 Solid State Lasers

Treatment:Theoretical (THR)

DOI:10.1080/09500340600834770

Database:Compendex

Accession number:20064110165901

Title:Goos-Hänchen-like displacement of finite-sized light beams through a thin dielectric slab

Authors:Chen, Xi (1); Zhu, Qi-Biao (1); Li, Chun-Fang (1)

Author affiliation:(1) Department of Physics, College of Science, Shanghai University, Shanghai 200444, China; (2) State Key Laboratory of Transient Optics Technology, Xi'an Institute of Optics and Precision Mechanics, Academia Sinica, Xi'an 710068, China

Corresponding author:Chen, X.

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

Abbreviated source title:Hongwai Yu Haomibo Xuebao

Volume:25

Issue:4

Issue date:August 2006

Publication year:2006

Pages:291-294

Language:Chinese

ISSN:10019014

CODEN:HHXUEZ

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:It was investigated that the finite-sized light beam transmitting through a thin dielectric slab would experiences four non-geometric effects, such as Goos-Ha&die;nchen-like (GHL) displacement, angular deflection, modification of waist width, and longitudinal focal shift. Necessary conditions were advanced for the GHL displacement to be backward. The experimental observations of the backward GHL displacement in the microwave region were reported for the first time. These novel phenomena will have potential applications in optical devices and integrated optics.

Number of references:15

Main heading:Light transmission

Controlled terms:Dielectric materials - Geometrical optics - Gradient index optics - Integrated optics - Light polarization - Light reflection - Mathematical techniques - Microwave devices - Optical devices

Uncontrolled terms:Angular deflection - Finite sized light beam - Goos Hanchen like (GHL) displacement - Longitudinal focal shift - Nongeometric effect - Potential application - Thin dielectric slab - Waist width modification

Classification code:708.1 Dielectric Materials - 715 Electronic Equipment, General Purpose and Industrial - 741.1 Light/Optics - 741.3 Optical Devices and Systems - 921 Mathematics

Treatment:Applications (APP); Experimental (EXP)

Database:Compendex

Accession number:20064610240505

Title:Storage arithmetic of video image based on queue buffer structure

Authors:Hao, Wei (0); Su, Xiuqin (0); Yang, Xiaojun (0); Li, Zhe (0); Wu, Huilian (0)

Corresponding author:Hao, W.(hwwmacky@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:35

Issue:9

Issue date:September 2006

Publication year:2006

Pages:1431-1434

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, China

Abstract:Aimed at the ubiquitous problem of losing frame in the course of video image real-time storing, the typical storage arithmetic has been analyzed thoroughly in this paper. Then, the cause of losing video image in the process of real-time storing was found. When the same size files were saved continuously to the disk of the computer, the storage rate was fluctuant in stated range. Through adopting the queue buffer structure, the influence of the storage rate fluctuating was avoided effectively; consequently the real-time storage of high-speed video image was ensured in the condition that the rate of data flow is less than the mean rate of storage. Finally the problem of losing frame was solved. By experiment, the feasibility and reliability of the arithmetic was proved.

Number of references:6

Database:Compendex

Accession number:2006259951338

Title:Structuring by multi-beam interference using symmetric pyramids

Authors:Lei, Ming (1); Yao, Baoli (1); Rupp, Romano A. (2)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710068; (2) Institute for Experimental Physics, University of Vienna, Boltzmanngasse 5, A-1090 Wien, Austria

Corresponding author:Lei, M.

Source title:Optics Express

Abbreviated source title:Opt. Express

Volume:14

Issue:12

Issue date:2006

Publication year:2006

Pages:5803-5811

Language:English

ISSN:10944087

E-ISSN:10944087

Document type:Journal article (JA)

Publisher:Optical Society of America

Abstract:A method for producing optical structures using rotationally symmetric pyramids is proposed. Two-dimensional structures can be achieved using acute prisms. They form by multi-beam interference of plane waves that impinge from directions distributed symmetrically around the axis of rotational symmetry. Flat-topped pyramids provide an additional beam along the axis thus generating three-dimensional structures. Experimental results are consistent with the results of numerical simulations. The advantages of the method are simplicity of operation, low cost, ease of integration, good stability, and high transmittance. Possible applications are the fabrication of photonic micro-structures such as photonic crystals or array waveguides as well as multi-beam optical tweezers. © 2006 Optical Society of America.

Number of references:15

Main heading:Light interference

Controlled terms:Computer simulation - Crystals - Integration - Microstructure - Optical devices - Optical systems - Photons - Prisms - Rotation - Waveguides

Uncontrolled terms:Array waveguides - High transmittance - Multi-beam interference - Optical structures - Plane waves - Symmetric pyramids

Classification code:933.1 Crystalline Solids - 931.3 Atomic and Molecular Physics - 931.1 Mechanics - 921.2 Calculus - 741.3 Optical Devices and Systems - 741.1 Light/Optics - 723.5 Computer Applications - 714.3 Waveguides - 531.2 Metallography

Treatment:Theoretical (THR); Experimental (EXP)

DOI:10.1364/OE.14.005803

Database:Compendex

Accession number:20064410214249

Title:Analysis of hypersonic reentry radiation model

Authors:Meng, Fan-Sheng (1); Xiong, Ren-Sheng (1); Liu, Chao-Hui (1)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Acad. of Sci., Xi'an 710068, China

Corresponding author:Meng, F.-S.(mfsh@opt.cn)

Source title:Guangxue Jingmi Gongcheng/Optics and Precision Engineering

Abbreviated source title:Guangxue Jingmi Gongcheng

Volume:14

Issue:4

Issue date:August 2006

Publication year:2006

Pages:575-579

Language:Chinese

ISSN:1004924X

CODEN:GJGOF4

Document type:Journal article (JA)

Publisher:Chinese Academy of Sciences

Abstract:Based on analyzing and computing the reentry object radiation model, the relationship between heat radiation, shock radiation, ablation radiation and retail radiation was given. By analysis of the facts of separating errors between measurement and numerical computation, a revised heat radiation model was established. With comparison of the theoretical results in revised model with the measuring results in experimental field and simulation results in laboratory, it is concluded that the revised heart radiation model can give the real radiation properties of reentry for Apollo airplane by revision of heat radiation, shock radiation and retail radiation. Although there is difference in the shape and radiation of blunt and tine reentry objects, the gap can be amended by computing.

Number of references:8

Main heading:Reentry

Controlled terms:Calculations - Heat radiation - Mathematical models - Shock waves - Wakes

Uncontrolled terms:Hypersonic radiation - Radiation intensity - Radiation measurement - Shock

Classification code:641.2 Heat Transfer - 656.1 Space Flight - 921 Mathematics - 931 Classical Physics; Quantum Theory; Relativity

Treatment:Applications (APP); Experimental (EXP)

Database:Compendex

Accession number:2006269966070

Title:On the representation of an inclined Gaussian beam

Authors:Zhang, Yan (1); Li, Chun-Fang (1)

Corresponding author:Zhang, Y.

Source title:European Journal of Physics

Abbreviated source title:Eur. J. Phys.

Volume:27

Issue:4

Issue date:July 1, 2006

Publication year:2006

Pages:779-786

Article number:009

Language:English

ISSN:01430807

E-ISSN:13616404

CODEN:EJPHD4

Document type:Journal article (JA)

Publisher:Institute of Physics Publishing

Abstract:In most contemporary optics courses, Gaussian beams are demonstrated in the form of propagation along one coordinate axis. This is referred to as the conventional representation and is in fact a special form. In this paper, we derive the general representation of a Gaussian beam propagating obliquely to the coordinate axis, by performing a coordinate rotation transformation on the conventional representation. When doing so on the beam parameters, a restrictive condition has to be taken into account. Without this condition, the expressions for the beam parameters after the rotation are not consistent with the conventional ones. © 2006 IOP Publishing Ltd.

Number of references:12

Main heading:Optical engineering

Controlled terms:Graph theory - Light propagation - Mathematical transformations - Parameter estimation - Rotation

Uncontrolled terms:Beam parameters - Coordinate axis - Gaussian beams - Rotation transformations

Classification code:731.1 Control Systems - 741.1 Light/Optics - 921.3 Mathematical Transformations - 921.4 Combinatorial Mathematics, Includes Graph Theory, Set Theory - 931.1 Mechanics

Treatment:Theoretical (THR)

DOI:10.1088/0143-0807/27/4/009

Database:Compendex

Accession number:20064610240476

Title:Study of high efficiency batch two sides milling and polishing make technology for grin lens

Authors:Li, Qiang (0); Wang, Sanwen (0); Yao, Shengli (0); Mi, Lei (0); Gao, Feng (0)

Corresponding author:Li, Q.(liqiang@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:35

Issue:9

Issue date:September 2006

Publication year:2006

Pages:1305-1308

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, China

Abstract:Based on two sides milling and polishing principle of elements, a suit of Grin lens assistant jig design was brought forward. From technics characteristic and practice aspect, assistant jigs were analysed and proved. By times without number batch machining, this suit of assistant jig can achieve the demand of Grin lens high efficiency batch machining technology. Comparisons indicate that whole product line technics turns easy, procedure time in production is shortened and cost in assistant material is reduced. This research results showed that two sides milling and polishing means is a new useful and practical way.

Number of references:6

Database:Compendex

Accession number:20064210172229

Title:An efficient unsupervised MRF image clustering method

Authors:Hou, Yimin (1); Guo, Lei (1); Lun, Xiangmin (2)

Author affiliation:(1) Department of Automation, Northwestern Polytechnical University, Xi'an 710072; (2) Xi'an Institute of Optics and Precision Mechanics, Cas, Xi'an 710068

Corresponding author:Hou, Y.

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

Abbreviated source title:Lect. Notes Comput. Sci.

Volume:4099 LNAI

Monograph title:PRICAI 2006: Trends in Artificial Intelligence - 9th Pacific Rim International Conference on Artificial Intelligence, Proceedings

Issue date:2006

Publication year:2006

Pages:1216-1221

Language:English

ISSN:03029743

E-ISSN:16113349

ISBN-10:3540366679

ISBN-13:9783540366676

Document type:Conference article (CA)

Conference name:9th Pacific Rim International Conference on Artificial Intelligence

Conference date:August 7, 2006 - August 11, 2006

Conference location:Guilin, China

Conference code:68284

Publisher:Springer Verlag

Abstract:In this paper, a robust image segmentation method is proposed. The relationship between pixel intensities and distance between pixels are introduced to the traditional neighbourhood potential function To perform an unsupervised segmentation, the Bayes Information Criterion (BIC) is used to determine the class number, the K-means is employed to initialise the classification and calculate the mean values and variances of the classes. The segmentation is transformed to maximize a posteriori(MAP) procedure. Then, the Iterative Conditional Model (ICM) is employed to solve the MAP problem. In the experiments, the proposed method is compared with other segmentation techniques, for noisy image segmentation applying on synthetic and real images. The experiment results shows that the proposed algorithm is the better choice. © Springer-Verlag Berlin Heidelberg 2006.

Number of references:9

Main heading:Image segmentation

Controlled terms:Algorithms - Artificial intelligence - Classification (of information) - Iterative methods - Number theory - Problem solving

Uncontrolled terms:Bayes Information Criterion (BIC) - Iterative Conditional Model (ICM) - Maximize a posteriori (MAP) - Unsupervised segmentation

Classification code:716.1 Information Theory and Signal Processing - 723.2 Data Processing and Image Processing - 723.4 Artificial Intelligence - 921.6 Numerical Methods

Treatment:Theoretical (THR)

Database:Compendex

Accession number:2006189857138

Title:An efficient spatial visual retrieval algorithm based on stored procedures

Authors:Li, Feng (0); Hu, Yanfeng (0); Fu, Kun (0); Wu, Yirong (0)

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

Source title:Jisuanji Gongcheng/Computer Engineering

Abbreviated source title:Jisuanji Gongcheng

Volume:32

Issue:6

Issue date:Mar 20 2006

Publication year:2006

Pages:37-39

Language:Chinese

ISSN:10003428

CODEN:JISGEV

Document type:Journal article (JA)

Publisher:Shanghai Computer Society, Shanghai, China

Abstract:It is inefficient to manage data and visually retrieve image on magnanimous remote sensing raster image database by some GIS spatial data engine. This paper describes and optimizes an efficient spatial visual retrieval algorithm aimed at directly storage procedure of relational database management system (RDBMS) on performance on many levels after the character of magnanimous remote sensing raster image database and the spatial visual retrieval is studied in depth. The results of experiment demonstrate that this algorithm is stable and adaptable.

Number of references:6

Database:Compendex

Accession number:20063810125968

Title:Ultra-broadband optical parametric chirped pulse amplification by the matching of both the group velocity and pulse front

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

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

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

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

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:6344 I

Monograph title:Advanced Laser Technologies 2005

Issue date:2006

Publication year:2006

Article number:634408

Language:English

ISSN:0277786X

CODEN:PSISDG

ISBN-10:0819464201

ISBN-13:9780819464200

Document type:Conference article (CA)

Conference name:Advanced Laser Technologies 2005

Conference date:September 3, 2005 - September 6, 2005

Conference location:Tianjin, China

Conference code:68108

Publisher:SPIE

Abstract:The problem of phase-mismatch-compensation for ultra-broadband OPCPA is first studied theoretically by us, and a scheme for phase-mismatch-compensation is proposed, which is based on the matching of both the group velocity and pulse front between signal and idler by the combination of the no collinear-phase-match and pulse-front-till that is accomplished by angular dispersion of the interacting rays. By this Scheme, the phase mismatch to first order in frequency shift can be completely compensated, and then an ultra-broadband OPCPA is realized. It is shown that the phase mismatch to both first and second order can be completely compensated simultaneously in some cases, and this leads to an extremely broadband spectral width. Therefore the important criterion for constructing an ultra-broadband OPCPA that both pulse-front and group-velocity between signal and idler are exactly matched simultaneously. Finally, specific numerical calculations and simulations are presented for BBO-OPCPA with type-I noncollinear angularly dispersed geometry.

Number of references:9

Main heading:Laser pulses

Controlled terms:Computer simulation - Frequency modulation - Optical parametric oscillators - Phase shift - Pulse amplifiers

Uncontrolled terms:Group velocity - Optical parametric chirped pulse amplification - Phase mismatch compensation - Pulse front

Classification code:744.1 Lasers, General - 723.5 Computer Applications - 716 Telecommunication; Radar, Radio and Television - 713.4 Pulse Circuits - 713.2 Oscillators - 713.1 Amplifiers - 703.1 Electric Networks

Treatment:Theoretical (THR)

DOI:10.1117/12.693422

Database:Compendex

Accession number:20063610101645

Title:Comprehensive comparison of several algorithms for precision rectification of satellite imagery

Authors:Li, Ligang (0); Liu, Bo (0); You, Hongjian (0); Peng, Hailiang (0); Wu, Yirong (0)

Corresponding author:Li, L.(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:35

Issue:7

Issue date:July 2006

Publication year:2006

Pages:1028-1034

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society, Xi'an, China

Abstract:Ground Control Points (GCPs) which include radar imagery, optic imagery and so on are used to rectify satellite imagery precisely, because orbit ephemeris and sensor parameters are often unavailable in practical application. In this paper, different kinds of precision rectification algorithms are introduced first, then a comprehensive comparison of several algorithms is carried out from the viewpoints of GCP number, the algorithm complexity, the applicability and so on, and in the end RadarSat and QuickBirdII images are applied to test the accuracy of different precision rectification algorithms and the relationship between the accuracy and the number of GCPs. Experimental results show that the higher accuracy can be achieved with more GCPs, but the accuracy improves slowly when the number of GCPs increases to a certain extent. The accuracy of 3rd rational function model is the best for optic imagery. The rigor geometric model based on affine transform is a good algorithm for optic imagery with few GCPs. The direct linear transformation model, the self-calibration direct linear transformation model and the extensive direct linear transformation model can be used for commercial optic imagery and reach a high accuracy. For radar imagery, the accuracy of the Range-Doppler model is stable and the model achieves high accuracy with few GCPs.

Number of references:14

DOI:10.1002/nme.1472

Database:Compendex

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中国科学院西安光学精密机械研究所图书馆