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利用紫外预电离横向放电和气体循环结构建立了一套放电激励重复频率HF激光装置。研究了激光器工作介质SF6/C2H6混合气体放电特性和激光输出特性,获得激光器单次运行的最佳输出参数;通过对激光器重复频率运行时不同气体流速、充电电压与气体总压条件下的放电状态和输出能量的比较,分析了激光器重复频率稳定运行的必要条件。结果表明:所研制的激光器最大单脉冲能量0.6 J,峰值功率3 MW,电光转换效率2.4%;当混合气体工作介质以3.5 m/s的流速循环时,激光器稳定运行的最高工作频率可达50 Hz,脉冲输出能量稳定在0.26 J,平均功率达到13 W。
A set of discharge excited repetition frequency HF laser was established by using UV pre-ionization lateral discharge and gas circulation structure. The discharge characteristics and laser output characteristics of the working medium SF6 / C2H6 were studied, and the best output parameters of the laser for single operation were obtained. By analyzing the different gas flow rate, charging voltage and discharge conditions Compared with the output energy, the necessary conditions for the stable operation of laser repetition frequency are analyzed. The results show that the maximum pulse energy 0.6 J, the peak power 3 MW and the electro-optical conversion efficiency of the developed laser are 2.4%. When the working medium of the mixed gas is circulated at a flow rate of 3.5 m / s, the maximum operating frequency of the laser can reach 50 Hz, pulse output energy stable at 0.26 J, the average power of 13 W.