中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
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Controlled Synthesis of Au-36(SR)(24) (SR = SPh, SC6H4CH3, SCH(CH3)Ph, and SC10H7) Nanoclusters 期刊论文  OAI收割
ACTA PHYSICO-CHIMICA SINICA, 2018, 卷号: 34, 期号: 7, 页码: 786-791
作者:  
Li Zhimin;  Li Gao;  Zhou Yang;  Zheng Kai
  |  收藏  |  浏览/下载:31/0  |  提交时间:2019/06/20
Design and experimental research of a new type focus mechanism used in space-based telescope (EI CONFERENCE) 会议论文  OAI收割
2012 9th IEEE International Conference on Mechatronics and Automation, ICMA 2012, August 5, 2012 - August 8, 2012, Chengdu, China
作者:  
Wang D.
收藏  |  浏览/下载:37/0  |  提交时间:2013/03/25
The position of focal plane will be changed because of temperature fluctuation and vacuum environment. In order to make the telescope work well  positioning accuracy of the mechanism is 0.008mm. The performance satisfies the need of precision  a focusing mechanism is needed. To majority of large space-based telescopes  and the scheme design is reasonable and practicable. 2012 IEEE.  the general way to do this would be to use a reflector  which was located in the backfocal distance. One of typical schemes of this mechanism was introduced  however  because of the big axial size  the mechanism can't be used when the size of the enclosure was limited. A new type of focusing mechanism was introduced  which has such advantages of small size  high accuracy and low mass. The design and test methods had been discussed. According to the results  the repeatability positioning accuracy is 0.0025mm  
High power diode laser with beam coupling (EI CONFERENCE) 会议论文  OAI收割
Optoelectronic Materials and Devices III, October 27, 2008 - October 30, 2008, Hangzhou, China
作者:  
Wang L.;  Liu Y.;  Wang L.;  Liu Y.;  Liu Y.
收藏  |  浏览/下载:61/0  |  提交时间:2013/03/25
As the increasing applications of the semiconductor lasers in the laser processing  the single 2-D stack optic-power density has not satisfied the actual requirements. It demands to couple several diode laser stack beams to one to improve the brightness  and it becomes the central issue to adopt the appropriate beam coupling technology which would offer high quality and high efficiency. In this paper  it mainly introduces the beam shaping and the technology of spatial coupling  polarization coupling  and wavelength coupling. The coupling key elements are presented and indicated. Finally  the development of the diode laser on beam coupling in our country fell behind through analyzing the statement of the world. Our lab is studying on polarization coupling and wavelength coupling. We gain some results by phase  which the polarization coupling efficiency can achieve 90% for two LD stacks with seven bars whose luminous wavelength is 975nm and980nm.By two 808nm diode laser coupling  the efficiency of 60% can be achieved after focusing to the beam size of 22mm2. 2008 SPIE.  
Central hole effect on Whispering-Gallery-Mode of triangular lattice photonic crystal microcavity (EI CONFERENCE) 会议论文  OAI收割
Optoelectronic Materials and Devices III, October 27, 2008 - October 30, 2008, Hangzhou, China
作者:  
Zhang Y.;  Wang L.;  Wang L.;  Wang L.;  Wang Z.
收藏  |  浏览/下载:25/0  |  提交时间:2013/03/25
Laser tunable Toraldo superresolution with a uniform nonlinear pupil filter 期刊论文  OAI收割
appl. optics, 2008, 卷号: 47, 期号: 21, 页码: 3689, 3693
魏劲松; Xiao Mufei
收藏  |  浏览/下载:1734/228  |  提交时间:2009/09/22
High-power VCSELs single devices aid 2-D arrays (EI CONFERENCE) 会议论文  OAI收割
ICO20: Lasers and Laser Technologies, August 21, 2005 - August 26, 2005, Changchun, China
作者:  
Liu Y.;  Wang L.;  Wang L.;  Wang L.;  Liu Y.
收藏  |  浏览/下载:14/0  |  提交时间:2013/03/25