中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
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Fabrication of two-dimensional Ta2O5 photonic crystal slabs with ultra-low background emission toward highly sensitive fluorescence spectroscopy 期刊论文  OAI收割
optics express, 2011, 卷号: 19, 期号: 2, 页码: 1422-1428
Kaji T; Yamada T; Ueda R; Xu XS; Otomo A
收藏  |  浏览/下载:69/6  |  提交时间:2011/07/05
Theoretical analysis of emission characteristics of second-order distributed feedback semiconductor lasers (EI CONFERENCE) 会议论文  OAI收割
Semiconductor Lasers and Applications IV, October 18, 2010 - October 19, 2010, Beijing, China
作者:  
Liu Y.;  Liu Y.;  Qin L.;  Liu Y.;  Wang L.
收藏  |  浏览/下载:28/0  |  提交时间:2013/03/25
Based on the modified coupled-wave theory  the emission characteristics  including threshold gain  photon density distribution in the cavity  and external differential quantum efficiency for second-order DFB lasers are investigated. Numerical simulation results show that for given device structure with wavelength of 1.55 m  the feedback coupling coefficient and the surface radiation coupling coefficient of the second-order grating have great influence on the emission characteristics of the device. By choosing different duty cycles of the grating  we can change the two coupling coefficients  which affect the emission characteristics. For an overall consideration  an optimal duty cycle of 0.43 is chosen. The optimized results show that the device works without degeneracy modes and spatial burning hole. Besides  the side-mode suppress ratio (SMSR) and external differential quantum efficiency reach as high as 42 dB and 47%  respectively. 2010 SPIE.  
Multi-Parameter sensing in liquid using a lamb wave based microsensor (EI CONFERENCE) 会议论文  OAI收割
2008 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications, SPAWDA 2008, December 5, 2008 - December 8, 2008, Nanjing, China
作者:  
Li F.;  Wu Y.-H.
收藏  |  浏览/下载:24/0  |  提交时间:2013/03/25
Effect of surface tension on the mode selection of vertically excited surface waves in a circular cylindrical vessel 期刊论文  OAI收割
Chinese Physics, 2004, 卷号: 13, 期号: 12, 页码: 2013-2020
作者:  
Jian YJ(菅永军);  E XQ(鄂学全);  Zhang J(张杰);  Meng JM
收藏  |  浏览/下载:800/16  |  提交时间:2009/08/03
Vertically forced surface wave in weakly viscous fluids bounded in a circular cylindrical vessel 期刊论文  OAI收割
Chinese Physics, 2004, 卷号: 13, 期号: 8, 页码: 1191-1200
作者:  
Jian YJ(菅永军);  E XQ(鄂学全)
收藏  |  浏览/下载:785/33  |  提交时间:2009/08/03
Surface waves in a vertically excited circular cylindrical container 期刊论文  OAI收割
Chinese Physics, 2004, 卷号: 13, 期号: 10, 页码: 1623-1630
作者:  
Jian YJ(菅永军);  E XQ(鄂学全);  Zhang J(张杰);  Meng JM
收藏  |  浏览/下载:744/28  |  提交时间:2009/08/03