由变反镜耦合输出的卡塞格林非稳腔激光技术研究  

Cassegrain Unstable Resonator with Variable Reflectivity Mirror (VRM) Output Coupler

作　　者：张放[1] 张平雷[1] 周寿桓[1] 

机构地区：[1]华北光电技术研究所

出　　处：《光学学报》1996年第10期1400-1405,共6页Acta Optica Sinica

基　　金：国防预研基金

摘　　要：讨论了变反镜参数和由变反镜耦合输出的卡塞格林（Ｃａｓｓｅｇｒｉａｎ）非稳腔参数的相互关系，以及它们对激光光束特性的影响。在此理论基础上，设计了ＮｄＹＡＧＱ开关（电光调Ｑ）高功率高光束质量的激光系统，获得了脉冲能量为１．４ＪＴＥＭ００模，脉宽１０ｎｓ，重复频率１０ｐｐｓ，束散度达到衍射极限的１．１倍，其倍频效率及混频效率分别为６０％和３０％。The interrelations between the parameters of VRM and Cassegrain unstable resonator and their effects on laser intensity distributions are studied in this paper. The experimental results of Nd∶YAG laser using VRM output coupler are presented in detail. Up to 1.4 J TEM 00 mode output pulse (10 ns, 10 pps) with 1.1 diffraction limited divergence can be obtained by using VRM unstable resonator and one amplifier. The effeciency of SHG is 60% and THG is 30%.

关 键 词：变反镜 卡塞格林非稳腔 光束质量 激光 

分 类 号：TN243[电子电信—物理电子学]