中国科学院机构知识库网格系统: 检索

Forecasting surface-layer optical turbulence above the Tibetan Plateau using the WRF model 期刊论文 OAI收割
OPTICS AND LASER TECHNOLOGY, 2022, 卷号: 153
作者: Yang, Qike; Wu, Xiaoqing; Luo, Tao; Qing, Chun; Yuan, Renmin

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收藏 | 浏览/下载：47/0 | 提交时间：2022/12/23

Atmospheric optics Mesoscale model Optical turbulence Laser beam transmission

High power diode laser source with a transmission grating for two spectral beam combining 期刊论文 OAI收割
Optik, 2019, 卷号: 192, 页码: 4
作者: J.Y.Tian; J.Zhang; H.Y.Peng; Y.X.Lei; L.Qin

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收藏 | 浏览/下载：23/0 | 提交时间：2020/08/24

Diode laser,Spectral beam combining,Transmission grating,High beam,quality,array,Optics

Research on the key technology of ATP system for free space optical communication (EI CONFERENCE) 会议论文 OAI收割
31st Chinese Control Conference, CCC 2012, July 25, 2012 - July 27, 2012, Hefei, China
Meng H.; Liu X.; Zhang B.

收藏 | 浏览/下载：15/0 | 提交时间：2013/03/25

Free space optical communication is the bidirectional transmission technology that puts to use the laser beam as a carrier in space. Free space optical communication is generally used in the severe space environment. It is the mainly problem that the narrow beam of laser beam is high-precision aimed. and it is became very important that the technology of ATP is researched. Performance of the ATP system directly affects the performance of the quality of the free space optical communication. So research of the ATP is the key technology in FSO and this technology is discussed and analysed in the article. 2012 Chinese Assoc of Automati.

All-solid-state high beam quality 1053nm nd: Glass amplifier at repetition frequency (EI CONFERENCE) 会议论文 OAI收割
2nd International Conference on Optical, Electronic Materials and Applications 2012, OEMA 2012, May 25, 2012 - May 26, 2012, Chongqing, China
作者: Qiu J.; Yu J.

收藏 | 浏览/下载：27/0 | 提交时间：2013/03/25

A laser amplifier of LD pumping Nd: glass with a high beam quality and stability which amplifies nanosecond laser pulse has been developed in this paper. The device adopts the major technology of "LD pumping multi pass amplification together". Beam transmission is designed with the technology of "inhibition of diffraction effect active control and spatial filtering". (2012) Trans Tech Publications Switzerland.

Microstructure tuning of epitaxial BaTiO3 (-) (x) thin films grown using laser molecular-beam epitaxy by varying the oxygen pressure 期刊论文 OAI收割
THIN SOLID FILMS, 2010, 卷号: 518, 期号: 14, 页码: 3669-3673
作者: Zhu, Y. L.; Zheng, S. J.; Chen, D.; Ma, X. L.

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收藏 | 浏览/下载：13/0 | 提交时间：2021/02/02

BaTiO3-x, oxides Thin films, oxygen pressure, {111} twins, microstructure X-ray diffraction Laser molecular beam epitaxy Transmission electron microscopy

Microstructure tuning of epitaxial BaTiO(3) (-) (x) thin films grown using laser molecular-beam epitaxy by varying the oxygen pressure 期刊论文 OAI收割
Thin Solid Films, 2010, 卷号: 518, 期号: 14, 页码: 3669-3673
Y. L. Zhu; S. J. Zheng; D. Chen; X. L. Ma

收藏 | 浏览/下载：17/0 | 提交时间：2012/04/13

BaTiO(3-x) Thin films oxides oxygen pressure {111} twins microstructure X-ray diffraction Laser molecular beam epitaxy Transmission electron microscopy 111 twin-boundary transport-properties misfit relaxation srtio3 stoichiometry perovskites interface mgo

Analysis of laser jamming to satellite-based detector (EI CONFERENCE) 会议论文 OAI收割
International Symposium on Photoelectronic Detection and Imaging 2009: Laser Sensing and Imaging, June 17, 2009 - June 19, 2009, Beijing, China
作者: Guo L.-H.; Guo R.-H.; Wang S.-W.

收藏 | 浏览/下载：30/0 | 提交时间：2013/03/25

The reconnaissance satellite communication satellite and navigation satellite used in the military applications have played more and more important role in the advanced technique wars and already become the significant support and aid system for military actions. With the development of all kinds of satellites anti-satellite laser weapons emerge as the times require. The experiments and analyses of laser disturbing CCD (charge coupled detector) in near ground have been studied by many research groups but their results are not suitable to the case that using laser disturbs the satellite-based detector. Because the distance between the satellite-based detector and the ground is very large it is difficult to damage it directly. However the optical receive system of satellite detector has large optical gain so laser disturbing satellite detector is possible. In order to determine its feasibility the theoretical analyses and experimental study are carried out in the paper. Firstly the influence factors of laser disturbing satellite detector are analyzed in detail which including laser power density on the surface of the detector after long distance transmission and laser power density threshold for disturbing etc. These factors are not only induced by the satellite orbit but dependence on the following parameters: laser average power in the ground laser beam quality tracing and aiming precision and atmospheric transmission. A calculation model is developed by considering all factors which then the power density entering into the detector can be calculated. Secondly the laser disturbing experiment is performed by using LD (laser diode) with the wavelength 808 nm disturbing CCD 5 kilometer away which the disturbing threshold value is obtained as 3.5510-4mW/cm2 that coincides with other researcher's results. Finally using the theoretical model the energy density of laser on the photosensitive surface of MSTI-3 satellite detector is estimated as about 100mW/cm2 which is largely exceed the disturbing threshold and therefore verify the feasibility of using this kind of laser disturbing the satellite-based detector. According to the results. using the similar laser power density absolutely saturate the requirements to laser disturbing satellite-based detector. If considering the peak power of pulsed laser even decrease laser average power it is also possible to damage the detector. This result will provide the reliable evidences to evaluate the effect of laser disturbing satellite-based detector. 2009 SPIE.

侧面抽运国产Nd∶YAG陶瓷棒的激光特性 期刊论文 OAI收割
中国激光, 2008, 卷号: 35, 期号: 12, 页码: 2001, 2004
唐昊; 朱小磊; 姜本学; 潘裕柏

收藏 | 浏览/下载：1522/238 | 提交时间：2009/09/18

激光器 Atomic percents Nd:YAG陶瓷 Average powers 激光二极管阵列 Beam divergence angles 侧面抽运 Laser diode array 被动调Q Nd:YAG ceramic Nd:yag ceramic lasers Output couplers Output performances Passively Q-switched Pulse widths Side pump Slope efficiencies Transmission ratios Wave outputs Working frequencies Yag crystals

Phase characteristics of laser beam in fibers (EI CONFERENCE) 会议论文 OAI收割
5th International Workshop on Adaptive Optics for Industry and Medicine, August 29, 2005 - September 1, 2005, Beijing, China
作者: Wang L.; Wang L.; Liu J.; Liu J.; Liu J.

收藏 | 浏览/下载：30/0 | 提交时间：2013/03/25

The phase changing rates1 of laser beam in single mode polarization maintaining fiber (PMF) Yb-doped rectangular inner cladding dual-clad fiber (DCF) and Yb-doped large-mode-area dual-clad fiber (LMF) are investigated by means of interference under situations with different exterior disturbance for situations that all the fibers are used as transmission medium only as well as amplifying medium with the last two. In this paper phase fluctuation characteristics of the beam transmitted through the fibers with no amplification are presented. The results show that the phase fluctuation frequencies of the laser beam transmitted through these three kinds of fibers are mainly in the range of 100-200Hz 100-300Hz and 80-400Hz respectively in normal laboratory environment. The phase fluctuation frequencies of the laser beam transmitted through the DCF in cases of when the environment temperature is changing a constant pressure is applied to the fiber and when vibration is applied are mainly in the range of 100-600Hz 100Hz-300Hz and 100-500Hz respectively. In the same cases for the LMF the phase fluctuation frequencies are mainly in the range of 150-600Hz 100-400Hz and 100-1000Hz respectively. It indicates that for realizing phase stabilization the bandwidth of any potential phase control2 system has to be in the range of a few kilohertz.

High-quality carbon-doped beta-type FeSi2 films synthesized by ion implantation 期刊论文 OAI收割
THIN SOLID FILMS, 2004, 卷号: 461, 期号: 1, 页码: 48
Dong, C; Li, X; Nie, D; Xu, L; Zhang, Z

收藏 | 浏览/下载：25/0 | 提交时间：2013/09/17

TRANSMISSION ELECTRON-MICROSCOPY EPITAXIAL BETA-FESI2 FILMS PULSED-LASER DEPOSITION BEAM SYNTHESIS THIN-FILMS SEMICONDUCTING BETA-FESI2 BAND-GAP GROWTH SI(100) MICROSTRUCTURE