Experiments with a CO2 gas-dynamic laser
Experiments with a CO2 gas-dynamic laser
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CO2 气体动力激光器实验
DOI：
10.1063/1.1653027
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发表时间：
1970
影响因子：
4
通讯作者：
D. J. Monson
中科院分区：
文献类型：
--
作者：
D. M. Kuehn;D. J. Monson
在激波管设备中进行了CO2气体动力学激光实验。CO2分子的粒子数反转是通过加热的测试气体通过超音速喷嘴膨胀来实现的。测量包括激光输出的形状、时间和能量以及光束直径。通过改变光学谐振腔的几何形状，光束发散和反射镜的劣化得以减小。针对温度、测试气体中He的分数和输出镜透射率优化激光功率。最大激光功率为250 W，用于100 cm 3腔体和20 cm增益路径。
Experiments with a CO2 gas‐dynamic laser were run in a shock‐tube facility. Population inversion of the CO2 molecule was achieved by expansion of heated test gas through a supersonic nozzle. Measurements included shape, time, and energy of the laser output, and beam diameter. Beam divergence and mirror deterioration were reduced by changes in optical cavity geometry. Laser power was optimized for temperature, fraction of He in the test gas, and output‐mirror transmissivity. Maximum laser power was 250 W for a 100‐cm3 cavity with a 20‐cm gain path.