%0 Journal Article
%T Brewster-oriented passive Q-switch intracavity optical parametric oscillator
%A Wan Yong
%A Zhu Da-Yong
%A Zeng Qin-Yong
%A Zhang Zhi-Yong
%A Zhang Jing
%A Han Kai
%A <br>万　勇
%A 朱大勇
%A 曾钦勇
%A 张志勇
%A 张　靖
%A 韩　凯
%J 中国物理 B
%D 2005
%I 
%X The behaviour of passively Q-switched solid-state lasers containing intracavity optical parametric oscillators (OPOs) is described, and a model to optimize this system's performance is developed. Meanwhile, an Nd:YAG laser-pumped KTiOPO4 (KTP) intracavity OPO for eye safe laser output is studied experimentally. A Brewster-oriented bis-(4-dimethylaminodithiobenzil)-nickel (BDN) dye film is employed in laser cavity, which plays the double role of a passive Q-switch and a Brewster plate, to Q-switch the light to increase its intensity and polarize the light so that the polarization plane of fundamental irradiation is perpendicular to the $Z$-axis of KTP serving as the OPO nonlinear crystal, thereby providing type II phase matching conditions to generate 1.572$\mu$m eye-safe signal laser. Eye-safe signal radiations of 6.6mJ per pulse at 1.572$\mu$m wavelength and pulse width as narrow as 6.0ns (FWHM) were obtained. Peak power was up to 1.1MW.
%K optical parametric oscillator
%K KTiOPO44 crystal
%K passive Q-switch
%K eye-safe<br>光学参数共振器
%K KTiOPO4晶体
%K 眼睛安全
%K 被动Q开关
%K 固体激光器
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=CD8D6A6897B9334F09D8D1648C376FB4&aid=BF5FB45B6FF028CAC29A686EC9C6DF66&yid=2DD7160C83D0ACED&vid=F3583C8E78166B9E&iid=E158A972A605785F&sid=C4B91B15F1F73E7E&eid=4D0B71A09FA5A2A5&journal_id=1009-1963&journal_name=中国物理&referenced_num=0&reference_num=11