中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
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浏览/检索结果: 共16条,第1-10条 帮助

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High Energy Picosecond Optical Parametric Amplifier Pumped by the Second Harmonic of a Two-Stage Ti:sapphire Laser 期刊论文  OAI收割
IEEE JOURNAL OF QUANTUM ELECTRONICS, 2012, 卷号: 48, 期号: 10, 页码: 1300
Zhu, JF; Ling, WJ; Zhong, X; Wang, ZH; Wei, ZY
收藏  |  浏览/下载:34/0  |  提交时间:2013/09/17
A COMPARATIVE ANALYSIS OF THE 'TRANSMITTANCE' METHOD BETWEEN USING INTEGRATING SPHERE AND FILTER HOLDERS FOR MEASURING LIGHT ABSORPTION BY AQUATIC PARTICLES 会议论文  OAI收割
2012 Ieee International Geoscience and Remote Sensing Symposium, New York
Zou, Lei; Zhang, Bing; Li, Junsheng; Song, Yang; Shen, Qian; Li, Liwei
收藏  |  浏览/下载:20/0  |  提交时间:2014/12/07
Optical amplification based on slow light effects in the photonic crystal waveguide 期刊论文  iSwitch采集
Microwave and optical technology letters, 2011, 卷号: 53, 期号: 12, 页码: 2997-3001
作者:  
Zhang, Yejin;  Zheng, Wanhua;  Qi, Aiyi;  Qu, Hongwei;  Chen, Lianghui
收藏  |  浏览/下载:46/0  |  提交时间:2019/05/12
Undersized humidity detecting system based on infrared spectrum absorption 期刊论文  OAI收割
qiangjiguang yu lizishu/high power laser and particle beams, 2011, 卷号: 23, 期号: 2, 页码: 363-366
Ju, Yu; Xie, Liang; Han, Wei; Sun, Ke
收藏  |  浏览/下载:45/0  |  提交时间:2012/06/13
Design and image restoration research of a cubic-phase-plate system (EI CONFERENCE) 会议论文  OAI收割
5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies, April 26, 2010 - April 29, 2010, Dalian, China
作者:  
Zhang J.;  Zhang J.;  Zhang J.;  Shi G.;  Zhang X.
收藏  |  浏览/下载:25/0  |  提交时间:2013/03/25
Wave-front coding technology is a novel jointly optical and digital imaging technology which can greatly extend the depth of focus of optical systems. The image restoration process is an important part of wave-front coding technology. Using wave-front coding makes the modulation transfer function(MTF) values of the optical systems change little over a range of several times the depth of focus  which means the system MTF is quite insensitive to defocus  and there is no zero in the passband. So we can design a single filter for the restoration of images in different defocus positions. However  it's hard to avoid noise during image acquisition and transmission processes. These noises will be amplified in the image restoration  especially in the high frequency part when the MTF drop is relatively low. The restoration process significantly reduces the system signal to noise ratio this way. Aimed at the problem of noise amplification  a new algorithm was proposed which incorporated wavelet denoising into the iterative steps of Lucy-Richardson algorithm. Better restoration results were obtained through the new algorithm  effectively solving the noise amplification problem of original LR algorithm. Two sets of identical triplet imaging systems were designed  in one of which the cubic-phase-plate was added. Imaging experiments of the manufactured systems were carried  and the images of a traditional system and a wave-front coded system before and after decoding were compared. The results show that the designed wave-front coded system can extend the depth of focus by 40 times compared with the traditional system while maintaining the light flux and the image plane resolution. 2010 Copyright SPIE - The International Society for Optical Engineering.  
Observation of a Red-Blue Detuning Asymmetry in Matter-Wave Superradiance 期刊论文  OAI收割
PHYSICAL REVIEW LETTERS, 2010, 卷号: 105, 期号: 22
Deng, L; Hagley, EW; Cao, QA; Wang, XR; Luo, XY; Wang, RQ; Payne, MG; Yang, F; Zhou, XJ; Chen, XZ; Zhan, MS
收藏  |  浏览/下载:25/0  |  提交时间:2013/09/24
Bragg diffraction of interacting Bose-Einstein condensates 期刊论文  OAI收割
PHYSICAL REVIEW A, 2010, 卷号: 82, 期号: 4
Zhang, P; Wu, JH; Zhang, XF; liu, WM
收藏  |  浏览/下载:28/0  |  提交时间:2013/09/17
Design of Photonic Crystal Semiconductor Optical Amplifier With Polarization Independence 期刊论文  OAI收割
journal of lightwave technology, 2010, 卷号: 28, 期号: 22, 页码: 3207-3211
Zhang YJ (Zhang Yejin); Zheng WH (Zheng Wanhua); Aiyi Q (Aiyi Qi); Qu HW (Qu Hongwei); Peng HL (Peng Hongling); Xie SZ (Xie Shizhong); Chen LH (Chen Lianghui)
收藏  |  浏览/下载:57/0  |  提交时间:2010/12/05
High-peak power multi-wavelength picosecond pulses generated from a BaWO4 Raman-seeded optical parametric amplifier 期刊论文  OAI收割
OPTICS COMMUNICATIONS, 2009, 卷号: 282, 期号: 14, 页码: 2960
Du, SF; Shi, YX; Zhang, DX; Li, QN; Feng, BH; Zhang, JY; Zang, JC
收藏  |  浏览/下载:20/0  |  提交时间:2013/09/17
Noncollinear optical parametric amplifier based femtosecond time-resolved transient fluorescence spectra: characterization and correction 期刊论文  OAI收割
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS, 2009, 卷号: 26, 期号: 8, 页码: 1627
Chen, HL; Weng, YX; Zhang, JY
收藏  |  浏览/下载:28/0  |  提交时间:2013/09/24