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9条,第1-9条 帮助

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Method to enhance the single mode fiber coupling efficiency for obscured receiver by beam shaping 期刊论文  OAI收割
Physica Scripta, 2020, 卷号: 95, 期号: 3
作者:  
Rui, Daoman;  Liu, Chao;  Chen, Mo;  Lan, Bin;  Xian, Hao
  |  收藏  |  浏览/下载:13/0  |  提交时间:2021/05/11
FDEM-flow3D: A 3D hydro-mechanical coupled model considering the pore seepage of rock matrix for simulating three-dimensional hydraulic fracturing 期刊论文  OAI收割
COMPUTERS AND GEOTECHNICS, 2017, 卷号: 81, 页码: 212-228
作者:  
Yan, Chengzeng;  Zheng, Hong
  |  收藏  |  浏览/下载:31/0  |  提交时间:2018/06/05
The Design of Directional Coupler for ECRH System 期刊论文  OAI收割
IEEE ACCESS, 2017, 卷号: 5, 期号: 无, 页码: 6187-6191
作者:  
Wu, Dajun;  Liu, Fukun;  Wang, Xiaojie;  Xu, Handong;  Zhang, Liyuan
收藏  |  浏览/下载:129/0  |  提交时间:2018/05/25
Co-Aperture Transceiving of Two Combined Beams Based on Adaptive Fiber Coupling Control 期刊论文  OAI收割
IEEE PHOTONICS TECHNOLOGY LETTERS, 2015, 卷号: 27, 期号: 17, 页码: 1787-1790
作者:  
Li, Feng;  Geng, Chao;  Li, Xinyang;  Qiu, Qi
收藏  |  浏览/下载:40/0  |  提交时间:2015/09/21
High power VCSEL device with periodic gain active region (EI CONFERENCE) 会议论文  OAI收割
Optoelectronic Materials and Devices II, November 2, 2007 - November 5, 2007, Wuhan, China
作者:  
Zhang Y.;  Liu Y.;  Liu Y.;  Liu Y.;  Qin L.
收藏  |  浏览/下载:29/0  |  提交时间:2013/03/25
High power vertical cavity surface emitting lasers with large aperture have been fabricated through improving passivation  lateral oxidation and heat dissipation techniques. Different from conventional three quantum well structure  a periodic gain active region with nine quantum wells was incorporated into the VCSEL structure  with which high efficiency and high power operation were expected. The nine quantum wells were divided into three groups with each of them located at the antinodes of the cavity to enhance the coupling between the optical field and the gain region. Large aperture and bottom-emitting configuration was used to improve the beam quality and the heat dissipation. A maximum output power of 1.4W was demonstrated at CW operation for a 400m-diameter device. The lasing wavelength shifted to 995.5nm with a FWHM of 2nm at a current of 4.8A due to the internal heating and the absence of active water cooling. A ring-shape farfield pattern was induced by the non-homogeneous lateral current distribution in large diameter device. The light intensity at the center of the ring increased with increasing current. A symmetric round light spot at the center and single transverse mode operation with a divergence angle of 16 were observed with current beyond 4.8A.  
高功率激光装置前端系统激光脉冲的时间整形及修正技术 期刊论文  OAI收割
光学学报, 2007, 卷号: 27, 期号: 3, 页码: 477, 481
王艳海; 王江峰; 李学春
收藏  |  浏览/下载:1872/293  |  提交时间:2009/09/18
Vertical-cavity surface-emitting lasers with periodic gain structure (EI CONFERENCE) 会议论文  OAI收割
作者:  
Wang L.;  Wang L.;  Wang L.;  Qin L.;  Sun Y.
收藏  |  浏览/下载:19/0  |  提交时间:2013/03/25
Study on the accelerator physics issues in the storage ring of BEPC II 期刊论文  OAI收割
HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION, 2006, 卷号: 30, 期号: 1, 页码: #REF!
作者:  
Xu G(徐刚);  Qin Q(秦庆);  Yu CH(于程辉);  Wang JQ(王九庆);  Wang S(王生)
收藏  |  浏览/下载:26/0  |  提交时间:2016/04/11
Analysis and correction of effects on complex correlations from mutual coupling and imbalance between channels 会议论文  OAI收割
Conference on Microwave Remote Sensing of the Atmosphere and Environment III, Hangzhou, Peoples R China, 2003
Shengwei Zhang,Xiaolong Dong,Ji Wu,JingShang Jiang
收藏  |  浏览/下载:24/0  |  提交时间:2014/05/04