Experimental Studies of CO2 Gas-Dynamic laser by Means of a Shock Tube
Experimental Studies of CO2 Gas-Dynamic laser by Means of a Shock Tube
复制标题
激波管CO2气体动力激光器的实验研究
DOI：
10.1143/jpsj.36.808
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发表时间：
1974
影响因子：
1.7
通讯作者：
T. Sekiguchi
中科院分区：
文献类型：
--
作者：
Kohnosuke Sato;T. Sekiguchi
利用内径70 mm、长约9 m的常规激波管，详细研究了CO2气动激光器的各种基本特性。研究了催化剂气体组成对输出功率的影响，确定了氦气的最佳含量为70 ~ 80%，水蒸气的最佳含量为2%。的依赖性的停滞温度（T ST）和压力（P ST）也检查。0.2CO2 + 0.8N2和0.1CO2 + 0.2N2 + 0.7He混合气体的最佳温度分别为2 40 0 K和170 0 K。输出功率随着Pst的增加而增加，并且在Pst值为4至6个大气压时趋于饱和。距喷嘴喉部的最佳距离为9±2 cm。峰值输出功率最大值接近20 W，功率密度约为3 W/cm 3。
Various fundamental properties of the CO 2 gas-dynamic laser are investigated in detail by means of a conventional shock tube with 70 mm inner diameter and nearly 9 m in length. The effect of the catalyzergas composition on the output power is studied, and the optimum content of helium gas is found to be about 70∼80% and that of water vapor is about 2%. The dependence on the stagnation temperature ( T st ) and pressure ( P st ) is also examined. The optimum value of T st for the mixture of 0.2 CO 2 +0.8 N 2 and for 0.1 CO 2 +0.2 N 2 +0.7 He is about 2400 K and 1700 K, respectively. The output power increases with increasing P st , and tends to saturate at the P st -value of 4 to 6 atmospheric pressure. The optimum distance from the nozzle throat is 9±2 cm. The maximum value of the peak output power is nearly 20 W and the power density is about 3 W/cm 3 .