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	Direct information retrieval after 3D reconstruction in grating-based X-ray phase-contrast computed tomography 期刊论文 OAI收割 JOURNAL OF SYNCHROTRON RADIATION, 2018, 卷号: 25, 页码: 1222-1228 作者: Wu, Z; Gao, K; Wang, ZL; Wei, CX; Wali, F \| 收藏 \| 浏览/下载：28/0 \| 提交时间：2019/09/24 direct information retrieval method grating-based phase-contrast imaging differential phase-contrast imaging computed tomography
	Collimation Sensing With Differential Grating and Talbot Interferometry 期刊论文 OAI收割 IEEE PHOTONICS JOURNAL, 2014, 卷号: 6, 期号: 3 作者: Wang, Nan; Tang, Yan; Jiang, Wei; Yan, Wei; Hu, Song 收藏 \| 浏览/下载：32/0 \| 提交时间：2015/07/10 Collimation testing moire fringe differential grating
	Advanced astigmatism-corrected tandem Wadsworth mounting for small-scale spectral broadband imaging spectrometer (EI CONFERENCE) 会议论文 OAI收割作者: Lin G.-Y. 收藏 \| 浏览/下载：38/0 \| 提交时间：2013/03/25 Tandem gratings of double-dispersion mount make it possible to design an imaging spectrometer for the weak light observation with high spatial resolution high spectral resolution and high optical transmission efficiency. The traditional tandem Wadsworth mounting is originally designed to match the coaxial telescope and large-scale imaging spectrometer. When it is used to connect the off-axis telescope such as off-axis parabolic mirror it presents lower imaging quality than to connect the coaxial telescope. It may also introduce interference among the detector and the optical elements as it is applied to the short focal length and small-scale spectrometer in a close volume by satellite. An advanced tandem Wadsworth mounting has been investigated to deal with the situation. The Wadsworth astigmatism-corrected mounting condition for which is expressed as the distance between the second concave grating and the imaging plane is calculated. Then the optimum arrangement for the first plane grating and the second concave grating which make the anterior Wadsworth condition fulfilling each wavelength is analyzed by the geometric and first order differential calculation. These two arrangements comprise the advanced Wadsworth mounting condition. The spectral resolution has also been calculated by these conditions. An example designed by the optimum theory proves that the advanced tandem Wadsworth mounting performs excellently in spectral broadband. 2012 Optical Society of America.
	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.
	Low-dose, simple, and fast grating-based X-ray phase-contrast imaging 期刊论文 OAI收割 PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2010, 卷号: 107, 期号: 31, 页码: 13576-13581 作者: Zhu PP(朱佩平); Zhang K(张凯); Wang ZL(王志立); Liu YJ(刘宜晋); Liu XS(刘小松) 收藏 \| 浏览/下载：32/0 \| 提交时间：2016/06/29 X-ray imaging differential phase contrast grating interferometer tomography
	光纤光栅滤波的瓦斯传感系统的研究期刊论文 OAI收割中国激光, 2005, 卷号: 32, 期号: 4, 页码: 549, 552 林枫; 蔡海文; 夏志平; 耿健新; 陈刚; 瞿荣辉; 方祖捷; 王向朝收藏 \| 浏览/下载：1032/220 \| 提交时间：2009/09/18 光学器件 optical devices 瓦斯传感 methane sensing 光纤光栅 fiber Bragg grating 差分吸收 differential absorption
	调平聚焦伺服控制系统的优化设计学位论文 OAI收割作者: 宗永红 \| 收藏 \| 浏览/下载：29/0 \| 提交时间：2018/12/26 光栅 grating 调平调焦 leveling and focusing 差动像散 differential astigmatism 反馈控制 feedback control 误差分析与校正 error analysis and correction