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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的能量损耗,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,电子温度和铜原子数密度也将下降,它们与使电子温度升高的因素相互制约,抑制了激光能级粒子数的增长。
The laser kinetics after CuBr laser hydrogen charging is studied in detail, and two phenomena observed in the experiment are explained: 1) The increase of power after hydrogen charging is mainly due to the fact that the hydrogen gas makes the central gas temperature and the vapor density of CuBr molecules Decreases, thereby reducing the energy loss of CuBr due to electron impact dissociation, resulting in an increase of electron temperature. At the same time, the electron density during the pulse increases, the skin effect of the electron density weakens, and the “black heart” phenomenon of the laser is improved. 2) There is an optimum range of hydrogen charge due to the fact that as the gas temperature is further reduced after the hydrogen charging, the electron temperature and the number density of copper atoms will also decrease, which are mutually constrained with the factors that increase the electron temperature and inhibit The increase in the number of laser energy level particles.