面阵滑闪火花预电离放电引发脉冲氧碘化学激光的实验研究

Experimental investigation of pulsed chemical oxygen-iodine lasers powered by gas discharge with the assistance of surface sliding discharge pre-ionization

摘要: 采用脉冲气体放电可以实现连续波氧碘化学激光器的脉冲化输出来获得高峰值功率。提出了面阵滑闪火花预电离电极结构并解决了大体积辉光放电问题。将这个电极结构应用到脉冲氧碘激光器中，获得了单脉冲能量为4.4 J，脉宽为58 s，峰值功率为75 kW的脉冲激光。脉冲峰值功率与连续波平均功率之比为63。研究了发生器的P和输出耦合镜透射率对激光特性的影响。

Abstract: Continuous wave chemical oxygen-iodine laser can be turned into pulsed operation mode to obtain higher peak power by means of gas discharge. An electrode system with the assistance of surface sliding pre-ionization was proposed to solve the problem of the stable glow discharge with large aperture. The electrode system was applied in pulsed COIL. Laser energy up to 4.4 J with a pulse duration of 58 s was obtained and pulse peak power was 75 kW. The ratio of pulse peak power to continue power was 63. The influence of P and output coupling mirror on laser characteristics was investigated.