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浏览/检索结果: 共3条，第1-3条 帮助 限定条件 发表日期：2008     已选(0)清除 条数/页：5101520253035404550556065707580859095100   排序方式：请选择作者升序作者降序题名升序题名降序发表日期升序发表日期降序提交时间升序提交时间降序 Annular sub-aperture stitching interferometry for testing of large asphreical surfaces (EI CONFERENCE) 会议论文 International Symposium on Photoelectronic Detection and Imaging, ISPDI 2007: Optoelectronic System Design, Manufacturing, and Testings, September 9, 2007 - September 12, 2007, Beijing, China Wang X.-K.; Wang L.-H.; Zheng L.-G.; Deng W.-J.; Zhang X.-J. 收藏  |  浏览/下载：67/0  |  提交时间：2013/03/25 Annular subaperture stitching interferometric technology can test large-aperture  and the PV and RMS of residual error of the full aperture phase distribution is 0.027 and 0.0023  high numerical aperture aspheric surfaces with high resolution  the relative error of PV and RMS is -0.53% and -0.31%  respectively. The results conclude that this splicing model and algorithm are accurate and feasible. So it provides another quantitive measurement for test aspheric surfaces especially for large aperture aspheres besides null-compensation.  low cost and high efficiency without auxiliary null optics. In this paper  the basic principle and theory of the stitching method are introduced  the reasonable mathematical model and effective splicing algorithm are established based on simultaneous least-squares method and Zernike polynomial fitting. The translation errors are eliminated from each subaperture through the synthetical optimization stitching mode  it keeps the error from transmitting and accumulating. The numerical simulations have been carried on by this method. As results  the surface map of the full aperture after stitching is consistent to the input surface map  the difference of PV error and RMS error between them is -0.0074 and -0.00052 ( is 632.8nm)  respectively   2D TO 3D convertion based on edge defocus and segmentation 其他 2008-01-01 Guo, Ge; Zhang, Nan; Huo, Longshe; Gao, Wen 收藏  |  浏览/下载：3/0  |  提交时间：2015/11/12 Optimization of multi-cycle two-color laser fields for the generation of an isolated attosecond pulse 期刊论文 opt. express, 2008, 卷号: 16, 期号: 14, 页码: 10331, 10340 Kim Byunghoon; Ahn Jungkwen; Yu Yongli; 程亚; 徐至展; Kim Dong Eon 收藏  |  浏览/下载：1014/47  |  提交时间：2009/09/18 America  Attosecond pulses  Full Width Half Maximum (FWHM)  FWHM pulse  Main color  Mixing ratios  Multi-cycle  Optical (PET) (OPET)  Optimal wavelength  Pulse duration (PD)  Shorter wavelengths  Two color laser fields  Two-color  Two-dimensional (2D) map