非链式HF激光器能量稳定性影响因素实验研究

周松青; 马连英; 黄珂; 沈炎龙; 李高鹏; 栾昆鹏; 朱峰; 易爱平

doi:doi:10.11884/hplpb201527.091001

强激光与粒子束, 2015, 27 (9): 091001, 网络出版: 2015-11-30

非链式HF激光器能量稳定性影响因素实验研究

Experimental investigation on factors influencing

论文大纲

周松青 ^*马连英黄珂沈炎龙李高鹏栾昆鹏朱峰易爱平

作者单位

西北核技术研究所, 激光与物质相互作用国家重点实验室, 西安 710024

电激励脉冲HF激光器能量稳定性吸附技术工作气体沸石分子筛 discharge-pumped pulsed HF laser energy stability absorption

摘要

为提高非链式电激励脉冲HF激光的能量稳定性，分析了激光产生反应动力学和影响激光能量稳定性的主要因素，得知基态HF分子的生成、工作气体的温度上升以及工作气体C_{2_{H_{6_{的消耗是激光能量快速下降的主要原因。经实验研究，没有采用任何反应产物去除方法的情况下，激光器输出1600个脉冲激光后，激光能量下降率达31%，采用沸石分子筛吸附单元对基态HF分子进行吸附后，同样输出1600个脉冲激光，激光能量基本趋于平稳状态，且输出约5500个脉冲激光后，激光能量较初始平均值仅有10%的下降；另外，在激光器运行过程中，恢复工作气体的初始温度和补充少量的C_{2_{H_{6_{也能改善激光能量的稳定性，其中补充25%的C_{2_{H_{6_{气体可使激光能量提高近8%。由激光产生反应动力学和实验研究结果可知，增加分子筛吸附单元、工作气体温控单元和工作气体实时补给单元可提高激光能量的稳定性。output energy stability of non-chain HF laser}}}}}}}}}}}}

Abstract

In order to improve the output energy stability of non-chain discharge-pumped pulsed HF laser, the chemical reaction dynamics of the HF laser and key factors determining the output stability were analyzed. The combination of the generation of fundamental-state HF molecules, the rising temperature of gases and the consumption of C_{2_{H_{6_{was responsible for the rapid decrease of output energy. Experiments were performed to verify the analysis, from which some conclusions could be drawn as follows. The output energy decreased by as high as roughly 31% of the starting value without eliminating of reaction products (i.e., the fundamental-state HF molecules), whereas the output energy was relatively much more stable with zeolite molecular sieve to adsorb the fundamental-state HF molecules after 1600 output pulses. The output energy decreasing ratio of the latter was only 10% after 5500 output pulses. In addition, temperature recovering of gain medium to the initial state, as well as the supplement of C_{2_{H_{6_{into the cavity, was demonstrated to improve the stability of output energy. Quantitatively, supplement of C_{2_{H_{6_{by 25% could improve the output energy by 8%. According to the chemical reaction dynamics and experimental results, the output energy stability is supposed to be improved by mounting the zeolite molecular sieve absorber, gases temperature controller and real-time gain medium supplement unit into the HF laser device.}}}}}}}}}}}}

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周松青, 马连英, 黄珂, 沈炎龙, 李高鹏, 栾昆鹏, 朱峰, 易爱平. 非链式HF激光器能量稳定性影响因素实验研究[J]. 强激光与粒子束, 2015, 27(9): 091001. Zhou Songqing, Ma Lianying, Huang Ke, Shen Yanlong, Li Gaopeng, Luan Kunpeng, Zhu Feng, Yi Aiping. Experimental investigation on factors influencing[J]. High Power Laser and Particle Beams, 2015, 27(9): 091001.

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