声光调Q激光器所需最小衍射效率的研究  

Study on the Necessary Minimum Diffraction Efficiency of Acoustooptical Q-switched Laser

作　　者：王刚[1] 李武军[1] 王石语[1] 蔡德芳[1] 文建国[1] 过振[1] 

机构地区：[1]西安电子科技大学技术物理学院,西安710071

出　　处：《光子学报》2005年第10期1445-1447,共3页Acta Photonica Sinica

基　　金：国防重点实验室基金(编号:51456050104DZ0101)资助

摘　　要：以四能级系统为例,研究了在输出脉冲能量一定的情况下,声光调Q激光器所需要的最小衍射效率如何确定的问题.通过对调Q反转粒子数密度的求解,获得了调Q激光器输出的一定脉冲能量与腔内损耗、所需最小Q开关的衍射效率和输出镜的反射率等的关系公式.这一结果为声光调Q激光器Q开关衍射效率的设计提供了简便的估算方法.A four-level system is analyzed as an example,and the necessary minimum diffraction efficiency of acoustooptical Q-switched laser in a certain output pulse energy is studied. Through soluting the population inversion density , the relationship between a certain output pulse energy and cavity loss, the necessary minimum diffraction efficiency of Q-switch , the reflectivity of output mirror and so on, are acquired. The result can be used to design the diffraction efficiency of acoustooptical Q-switched laser.

关 键 词：衍射效率 脉冲能量 腔内损耗 反转粒子数密度 

分 类 号：TN248.1[电子电信—物理电子学]