摘要
研究了重复频率HF脉冲激光器的气体介质对激光输出能量稳定性的影响规律。计算结果表明,激光器放电区内SF_6的解离率约为1.5%(略高于实验测量值),工作气体介质的消耗速率为2.2×10^(15)(cm^(-3)·s^(-1)),但消耗量比气体的初始量小3～4个量级。通过合理控制激光器内HF的分子浓度,并适时补充激光器气体介质,可以提高激光器输出能量的稳定性。激光器输出能量变化分为过渡阶段和维持阶段,其中过渡阶段决定了重复频率工作模式下HF激光器的总体出光能力。计算结果可为重复频率非链式HF脉冲激光器设计提供技术支持。
The effect of working gas on the output energy stability of a repetitively pulsed HF laser is investigated. The calculated results show that the decomposition of SF6 in the discharge region of the laser is about 1.5%, a little larger than the experimental data. The gas consumption rate is about 2.2×1015(cm-3·s-1), and the consumption is 3~4 orders of magnitude smaller than the initial content. The stability of the laser output energy can be improved by properly controlling the HF molecular concentration in the laser chamber and replenishing the working gas at a right time. The change of the laser output energy can be divided into two stages, a transitional stage and a maintenance stage. The transitional stage plays a decisive role in the determination of the output power level of a repetitively pulsed HF laser. The calculated results can provide a technical support for the design of a repetitively pulsed non-chain HF laser.
作者
朱峰
黄珂
陶蒙蒙
黄超
马连英
Zhu Feng;Huang Ke;Tao Mengmeng;Huang Chao;Ma Lianying(State Key Laboratory of Laser Interaction with Matter, Northicest Institute of Nuclear Technology,Xi'an , Shaanxi 710024, China)
出处
《光学学报》
EI
CAS
CSCD
北大核心
2019年第4期233-239,共7页
Acta Optica Sinica
基金
激光与物质相互作用国家重点实验室基金(SKLLIM1602)
