中国激光, 2016, 43 (5): 0502003, 网络出版: 2016-05-04
一种放电引发非链式氟化氘脉冲激光器研究
Study on a Non-Chain Discharge-Pumped Pulse Deuterium Fluoride Lasers
激光器 化学激光 非链式氟化氘激光 磁脉冲压缩开关 张氏电极 工作气体配比 lasers chemical lasers non-chain deuterium fluoride laser magnetic switch Chang-electrode mixture gas ratio
摘要
设计了一种紧凑型放电引发非链式氟化氘(DF)脉冲激光器,引入基于闸流管的一级磁脉冲压缩高压快上升沿放电引发回路,形成39.5 kV、100 ns上升沿高压快脉冲。紧凑型张氏放电电极结合紫外(UV)火花预电离,在电极间距为30 mm激活区形成均匀辉光放电,注入能量密度达190 J/L。激光谐振腔选用平平腔结构,激光工作气体采用SF6和D2,其气体配比优化为10:3,此时获得最大能量输出为877 mJ,电光转换效率为1.9 %,脉宽约200 ns,光斑为30 mm×9 mm。
Abstract
The compact non-chain discharge-pumped pulse deuterium fluoride (DF) laser is studied, the discharge trigger circuit is introduced based on one-stage thyratron magnetic pulse with fast rise time. Discharging voltage of 39.5 kV and pulse rise time of 100 ns are achieved. With the condition of 190 J/L energy depositions, a uniform glow discharge is formed using compact Chang-electrode combined with ultraviolet (UV) spark pre-ionization, and the distance between the cathode and anode is 30 mm. With flat-flat cavity laser resonators, mixture gas of SF6and D2is investigated. By optimizing the gas ratio to 10:3, the laser pulse energy is up to 877 mJ. The electro-optic conversion efficiency is about 1.9% and the pulse width is 200 ns with the beam dimensions of 30 mm×9 mm.
游利兵, 尹广玥, 王庆胜, 方晓东. 一种放电引发非链式氟化氘脉冲激光器研究[J]. 中国激光, 2016, 43(5): 0502003. You Libing, Yin Guangyue, Wang Qinsheng, Fang Xiaodong. Study on a Non-Chain Discharge-Pumped Pulse Deuterium Fluoride Lasers[J]. Chinese Journal of Lasers, 2016, 43(5): 0502003.