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Long focal length large-aperture switch-zoom system design 会议论文  OAI收割
international symposium on photoelectronic detection and imaging 2011: advances in imaging detectors and applications, beijing, china, may 24, 2011 - may 26, 2014
WangYan-Bin; DuanJing; JinHu-Min; JiangKai; ZhangHeng-Jin
收藏  |  浏览/下载:29/0  |  提交时间:2012/07/09
Focal switch in unapertured converging Hermite-cosh-Gaussian beams 期刊论文  OAI收割
opt. laser technol., 2006, 卷号: 38, 期号: 8, 页码: 620, 625
Zeng YS; 彭润伍; 范滇元
收藏  |  浏览/下载:887/172  |  提交时间:2009/09/18
Research on LD-Pumped dual wavelength Nd:YAG Laser with high beam quality for machining (EI CONFERENCE) 会议论文  OAI收割
ICO20: Lasers and Laser Technologies, August 21, 2005 - August 26, 2005, Changchun, China
作者:  
Zhang G.;  Zhang G.;  Zhang G.;  Zhang J.;  Zhang J.
收藏  |  浏览/下载:34/0  |  提交时间:2013/03/25
Considering laser medium thermal lens effect and thermal focal length changes with pumping power  conventionally  lasers are designed to operate in the middle of thermal stable zones  where the fundamental mode size is insensitive to thermal perturbation  while this method seems impossible when large fundamental mode size is required. Through self-select mode cavity  lasers are designed to work at the border of stable zone instead  where large fundamental mode size in gain media can be reached. With increase of pumping power and self-aperture mode-selective effect  mode size would grow up automatically to a certain value suitable for monomode resonance. With double 180 W pump modules  acoustic Q-switch and LBO external frequency-doubled  over 28 W which M2 equals 4.5 quasi-CW output green laser and 52W 1.064 um IR output is obtained simultaneity. With the insertion or not of the harmonic separator by footswitch  high beam quality green  IR  and green IR lasers are obtained conveniently.  
Gradient force pattern, focal shift, and focal switch in an apodized optical system 期刊论文  OAI收割
optik, 2005, 卷号: 116, 期号: 3, 页码: 99, 106
Gao XM; Zhou F; 徐文东; 干福熹
收藏  |  浏览/下载:1785/297  |  提交时间:2009/09/22