连续波氧碘化学激光器增益特性的模拟计算与分析

NUMERICAL MODELLING CALCULATION AND ANALYSIS OF GAIN COEFFICIENT FOR CW CHEMICAL OXYGEN IODINE LASERS

本文用一个简化模型从理论上系统地研究了CW OICL的增益系统及其与组份、压力、流速的关系,并得出了一些规律性的结果。研究的范围是:[O_~*]/[I_2]=10～200,[O_2~*]/[O_2]=2～9,P=1～100 torr,U=5—100 m/s。详细探讨了流动守恒方程组对计算CWOICL的重要性。指出提高流速几乎不影响峰值增益,而有助于按与流速成比例地扩大可用增益区。

The relation between components, pressure, flow velocity and gain coefficient of CW OICL is theoretically analyzed by using a simple model throug digital computation. The operating region concerned is [ O2]/ [ I2] = 10-200, [ O2]/ [ O2 ] =2-9, P= 1-100 torr,U= 5-100m/s, The necessity of flow conservation equation for a CW OICL is detially discussed, It is shown that the available gain region will by enlarged proportionally to flow velocity while the peak gain value almost remains inveriable when flow velocity is increased.