机构

• 长春光学精密机械与物... [2]

采集方式

• OAI收割 [2]

内容类型

• 会议论文 [2]

发表日期

• 2007 [1]
• 2005 [1]

学科主题

筛选

浏览/检索结果: 共2条，第1-2条 帮助 条数/页： 5101520253035404550556065707580859095100 排序方式： 请选择题名升序题名降序提交时间升序提交时间降序作者升序作者降序发表日期升序发表日期降序 Multi-mode combined manufacturing technology for large aperture aspheric mirrors (EI CONFERENCE) 会议论文  OAI收割 3rd International Symposium on Advanced Optical Manufacturing and Testing Technologies, AOMATT 2007: Large Mirrors and Telescopes, July 8, 2007 - July 12, 2007, Chengdu, China 作者:  Li J.;  Xuan B.;  Li J.;  Li J. 收藏  |  浏览/下载：16/0  |  提交时间：2013/03/25 In the field of manufacturing large aperture aspheric mirrors  mid-frequency surface error has been considered to be one of the most important factors for both manufacturing and testing technique. Mid-frequency surface error controlling the polishing process is not conventionally concerned as the same of controlling of low-frequency surface error. In order to solve such a problem  a new method - Multi-mode Combined Manufacturing (MCM) is put forward. MCM technology is useful for the control on all frequency-bands errors of optical surface and is adaptive to fast aspheric mirror especially. Based on classical manufacturing theory  principle analysis of MCM and experiments results are discussed in the paper.   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.