CuBr激光充氢机理研究

详细研究了ＣｕＢｒ激光充氢后的激光动力学过程,解释了实验中观测到的两个现象：１）充氢后功率增大,其主要原因是：充氢使中心气体温度和ＣｕＢｒ分子蒸汽密度降低,从而减少了电子碰撞离解ＣｕＢｒ的有量损耗,导致电子温度上升。同时,脉冲期间的电子密度增加,电子密度的趋肤效应减弱,激光的“黑心”现象被改善。２）存在一个最佳充氢范围,其原因是：充氢后,随着气体温度的进一步降低,电子温度和铜原子度也将下降,它们与

Mechanism Study of Additive Hydrogen in CuBr Lasers

The kinetics mechanisms of additive hyrdogen in CuBr lasers are investigatedsystematically.There are two important mechanisms for increasing laser power afteradding hydrogen:(1)The gas temperature and CuBr vapor density at the center of lasertube are reduced, it decreases collision energy depletion of electron and leads to increaseelectron temprature;(2)Electron density increases during the pulse, the skin effect andthe" black center" of laser are improved. There is an optimum range of additivehydrogen,which is observed in the experiment.The mechanism is that with the gastemperature further decreased, the copper density and electron temperature are alsodecreased,it will restrain the population of the laser levels.