对流放电CO2激光器的饱和特性

本文从微观的分子模型出发,得到了饱和强度的定量解析表达式。考虑了激励区气压、温度、流速的变化,计算了不同参量下激励区各点的饱和强度和小信号增益。分析讨论了气压、流速、气比、放电比功率对饱和强度及小信号增益的影响。并将饱和强度的计算结果与实验进行了比较,结果符合较好。 关键词：

THE SATURATION CHARACTERISTICS OF ELECTRIC DISCHARGE CONVECTION CO2 LASER

Based on a microscopic molecular model, an analytical expression for the satura-tion intensity is obtained. By taking into account of the changes in gas pressure, temperature and flow velocity, the saturation intensity and small-sgnalgain coefficient at all points in the active region have been calculated under a variety of parameters. We have analysed and discussed the effects of the changes of pressure, flow velocity, gas composition and the discharge specific power on saturation intensity and small-signal gain coefficient. Finally, the calculated values for saturation intensity are compared with experimental results and good agreements are found.