波导CO_2激光器电光腔倒空特性研究  

Study on the characteristics of cavity-dumped RF waveguide CO_2 laser

作　　者：杨泽后[1] 周鼎富[2] 陈建国[1] 江东[2] 霍义华[2] 孙鹏[2] 

机构地区：[1]四川大学光电技术系,成都610064 [2]西南技术物理研究所,成都610041

出　　处：《激光技术》2004年第5期485-487,553,共4页Laser Technology

摘　　要：对影响射频波导激光器电光腔倒空的激光输出脉冲特性的几个主要参数进行了研究。通过改变加在CdTe电光晶体上高压脉冲的不同上升沿时间 ,以及在不同布氏窗输出反射率等情况下 ,对腔倒空的脉冲宽度及脉冲峰值功率的变化特性进行了理论分析。在一台用于主动激光成像雷达光源的准折叠高重频腔倒空射频波导CO2 激光器上 ,通过改变CdTe电光晶体的工作参数 ,获得了 2 0ns到 30ns(FWHM)可调输出脉宽。Several parameters that affect the output pulse characteristics of electro-optically(E-O) cavity-dumped RF waveguide laser have been discussed.By changing the rising time of high voltage pulse in CdTe crystal and reflectivity of Brewster window,the varieties of output pulse width and peak power of cavity-dumped laser are theoretically studied.By changing these parameters,in a home-made CdTe E-O cavity-dumped double-channel RF excited CO 2 waveguide laser,which might be used as a light sources in a heterodyne imaging lidar system,we have obtained the cavity dumped pulses width at FWHM from 20ns to 30ns.

关 键 词：腔倒空 射频波导 碲化镉晶体 脉宽 

分 类 号：TN248.22[电子电信—物理电子学]