固体推进剂燃烧驱动CO_2气动激光小信号增益测量

Measurement of small-signal gain on solid propellant combustion driven CO_2 gasdynamic laser

介绍了固体推进剂燃烧驱动 CO2 气动激光小信号增益测量的原理、方法及实验系统 ,重点说明小信号增益测量光路设计、热敏电阻红外探测器工作原理、增益输出信号滤波和放大电路设计及数据采集系统的硬件配置和软件编制原则 ,给出典型实验测量结果。实验证明 ,采用放大法可较为准确的测量固体推进剂燃烧驱动 CO2

An introduction is given to the principle, method and experiment system of measurement of small-signal gain on solid propellant combustion driven CO2 gas dynamic laser. The design of optical path measurement of small-signal gain, operating principle of thermistor infrared detector, design of filter and amplifier circuit of gain output signal and hardware configuration as well as rules and methods of software development of data acquisition system are mainly presented. The typical experimental results are also given, which show that the amplification method can measure the small-signal gain accurately.