调Q脉冲紫外光Nd:YAG激光器的研究  

Study of Q-switching Ultraviolet Light Nd∶YAG Laser

作　　者：王旭[1] 刘磊[1] 刘娟[1] 段宇程[1] 肖磊[1] 刘朗[1] 张世文[1] 

机构地区：[1]华北光电技术研究所,北京100015

出　　处：《激光与红外》2006年第7期537-538,541,共3页Laser & Infrared

摘　　要：研制了一种大能量紫外光脉冲Nd：YAG激光器。由漫反射聚光腔、VRM非稳腔、电光调Q输出高光束质量基频激光；采用Ⅱ类KTP晶体倍频与Ⅱ类LBO晶体混频，获得紫外355nm激光输出；单脉冲能量达140mJ，光束发散角1．5mrad，1064～355nm光一光转换效率达22．2％，重复频率5Hz，脉宽9．7ns，光束直径6．5mm。A high energy ultraviolet laser is studied. High quality fundamental frequency laser of high quality is generated through diffuse-refective cavity, varied reflectivity mirror （VRM） unstable resonator and electro-optic （E-O） Q-switching. With 5Hz repetition rate, ultraviolet light pulse energy of 140mJ/pulse at 355nm is achieved using phasematch of type Ⅱ for KTP and phase-match of type Ⅱ for LBO, that the divergency angle is 1.5mrad, and the beam diameter is 6.5mm.

关 键 词：LBO晶体 三倍频 ND:YAG激光器 

分 类 号：TN248.13[电子电信—物理电子学]