脉冲CO_2激光器峰值功率的增益饱和现象

Gain Saturation of Peak Power in Pulse CO_2 Laser

从理论和实验的角度分析了在腔损耗调制状态下 ,当调制速度与 CO2 激光转动能级间的弛豫速度相当时 ,激光器输出脉冲峰值功率与增益系数间存在的非线性特性 :峰值功率随增益系数的增加 ,存在饱和现象。这种特性是 CO2 B类激光器的特点 ,实验和理论模拟结果一致。

WT5”BZ]This paper analyzed the nonlinear relationship between the peak power of the output and the gain coefficient of the class B CO 2 laser with experimental and theoretic methods. The results show that when the modulating velocity nearly equals to the rate of transition between the rotation levels , the peak power of the output laser will be saturated at a gain coefficient point. This is the very specialize character of the class B CO 2 laser, the result of our experiment agreed with that of simulations well. [WT5”HZ]