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.
出处
《激光与红外》
CAS
CSCD
北大核心
2006年第7期537-538,541,共3页
Laser & Infrared
