气动CO_2激光器小信号增益的实验研究

Experimental study on the small signal gain of gas dynamic CO_2 lasers

用放大法测量了分别在甲苯和乙醇两种液体燃烧驱动下气动CO2 激光器的小信号增益系数。实验发现 ,用甲苯作为燃料时激光器的平均小信号增益系数可达 0 .62m- 1,远远高于乙醇作燃料时的小信号增益系数。结合甲苯和乙醇分别与空气燃烧后产物组分的配比 ,对实验结果进行了分析 ,得出甲苯是燃烧驱动气动CO2

With the help of amplification method, the small signal gain of a gas dynamic CO2 laser is measured respectively under toluene and alcohol driving conditions. The experiments show that with toluene used as fuel, the small signal gain may reach 0.62m-1, which is by far higher than that with alcohol used as fuel. In conclusion, toluene is an optimum liquid fuel for combustion-driven gas dynamic CO2 laser.