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采用紫外预电离的横向放电方式和稳定光学谐振腔,使用无毒无腐蚀性的六氟化硫(SF6)和氘气(D2)作为工作物质,研究了工作气体配比、总气压对放电引发非链式脉冲氟化氘(DF)激光器输出能量的影响。实验发现SF6与D2的最佳比例为10:1,最佳总气压为10.5 kPa。使用DF激光谱线分析仪对激光输出谱线进行了测量,得到了17条P支跃迁谱线,激光能量集中在3.876μm附近的几条谱线。利用烧蚀光斑的方法测得输出激光束水平方向、垂直方向的发散角均为1 mrad。在最佳工作条件下,充电电压为39 kV时,激光单脉冲输出能量达到最大值3.58 J,此时激光脉冲宽度为215 ns,峰值功率为16.65 MW,电光转换效率为2.08%。
Adopting UV pre-ionization lateral discharge mode and stable optical resonator, using non-toxic and non-corrosive sulfur hexafluoride (SF6) and deuterium (D2) as working substance, the effects of working gas ratio and total pressure on discharge initiation Effect of Unlinked Pulsed Deuterium Fluoride Deuteride (DF) Laser Output Energy. The experiment found that SF6 and D2 the best ratio of 10: 1, the optimal total pressure of 10.5 kPa. DF laser line analyzer was used to measure the laser output spectrum. Seventeen P-branch transition lines were obtained, and the laser energy was concentrated in the vicinity of 3.876μm. The ablation angle of the output laser beam measured by ablation flare was 1 mrad. Under the optimal operating conditions, the laser pulse energy reaches a maximum of 3.58 J at a charging voltage of 39 kV. At this time, the laser pulse width is 215 ns, the peak power is 16.65 MW and the electro-optic conversion efficiency is 2.08%.