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A large-size and polarization-independent two dimensional grating fabricated by scanned reactive-ion-beam etching 期刊论文
Nanophotonics, 2022, 卷号: 11, 期号: 21, 页码: 4649-4657
作者:  W. Zhang;  W. H. Li;  T. Zhang;  Z. M. Zheng;  Z. D. Chi
收藏  |  浏览/下载：3/0  |  提交时间：2023/06/14
Brief Review of Development and Techniques for High Power Semiconductor Lasers 期刊论文
Guangxue Xuebao/Acta Optica Sinica, 2021, 卷号: 41, 期号: 1
作者:  Y. Ning;  Y. Chen;  J. Zhang;  Y. Song;  Y. Lei
收藏  |  浏览/下载：3/0  |  提交时间：2022/06/13
大面积高质量中阶梯光栅厚铝膜特性和制备工艺研究 学位论文
硕士: 中国科学院大学, 2015
作者:  孙梦至
收藏  |  浏览/下载：90/0  |  提交时间：2016/04/11
Improving image quality by using CCD subpixel imaging 期刊论文
Guangxue Xuebao/Acta Optica Sinica, 2015, 卷号: 35, 期号: 2
作者:  Li, Y. and B. He
收藏  |  浏览/下载：16/0  |  提交时间：2016/08/24
Pyramid wavefront sensor using a sequential operation method 期刊论文
Applied Optics, 2015, 卷号: 54, 期号: 13, 页码: 3894-3901
作者:  Yao, K. N.;  J. L. Wang;  X. Y. Liu;  H. W. Li;  M. H. Wang
收藏  |  浏览/下载：10/0  |  提交时间：2016/07/15
Design and experimental investigation on unstable resonator for non-chain pulsed DF laser 期刊论文
Zhongguo Jiguang/中文 Journal of Lasers, 2014, 卷号: 41, 期号: 1
Tan G.; Xie J.; Pan Q.; Shao C.; Zhang C.; Ruan P.; Guo J.
收藏  |  浏览/下载：16/0  |  提交时间：2015/04/24
New method of measurement laser beam on focal plane 会议论文
High-Power Laser Materials Processing: Lasers, Beam Delivery, Diagnostics, and Applications III, February 4, 2014 - February 6, 2014, San Francisco, CA, United states
Liu M.; Wang X.; Wang B.; Jiang Y.
收藏  |  浏览/下载：16/0  |  提交时间：2015/04/27
Experimental investigation of a diode-pumped powerful continuous-wave dual-wavelength Nd:YAG laser at 946 and 938.6 nm 期刊论文
Laser Physics, 2013, 卷号: 23, 期号: 5
Chen F.; Yu X.; Yan R. P.; Li X. D.; Li D. J.; Yang G. L.; Xie J. J.; Guo J.
收藏  |  浏览/下载：13/0  |  提交时间：2014/05/14
Space camera dynamic image quality measurement and evaluation (EI CONFERENCE) 会议论文
3rd International Conference on Measuring Technology and Mechatronics Automation, ICMTMA 2011, January 6, 2011 - January 7, 2011, Shanghai, China
Su W.; Zhang X.
收藏  |  浏览/下载：14/0  |  提交时间：2013/03/25
Adaptive Wiener filtering with Gaussian fitted point spread function in image restoration (EI CONFERENCE) 会议论文
2011 IEEE 2nd International Conference on Software Engineering and Service Science, ICSESS 2011, July 15, 2011 - July 17, 2011, Beijing, China
Yang L.; Zhang X.; Ren J.
收藏  |  浏览/下载：29/0  |  提交时间：2013/03/25
In the imaging process of the space remote sensing camera  there was degradation phenomenon in the acquired images. In order to reduce the image blur caused by the degradation  the remote sensing images were restored to give prominence to the characteristic objects in the images. First  the frequency-domain notch filter was adopted to remove strip noises in the images. Then using the ground characters with the knife-edge shape in the images  the point spread function of the imaging system was estimated. In order to improve the accuracy  the estimated point spread function was corrected with Gaussian fitting method. Finally  the images were restored using the adaptive Wiener filtering with the fitted point spread function. Experimental results of the real remote sensing images showed that almost all strip noises in the images were eliminated. After the denoised images were restored  its variance and its gray mean gradient increased  also its laplacian gradient increased. Restoration with Gaussian fitted point spread function is beneficial to interpreting and analyzing the remote sensing images. After restoration  the blur phenomenon of the images is reduced. The characters are highlighted  and the visual effect of the images is clearer. 2011 IEEE.  

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