氦氢混合气体中受激拉曼散射的脉宽特性
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摘要: 308nm准分子激光泵浦的氢拉曼散射介质中渗入一定比分的氦气，其输出的一阶斯托克斯光S1的脉宽将发生变化。实验获得不同氦比分的S1脉宽在20-45ns之间，与渗入氦的浓度有关。从氦对氢拉曼增益系数的影响，对实验结果进行了理论分析。Abstract: In this paper, the characteristics of stimulate Raman scattering pulse duration in He/H2 gas mixtures are investigated. The pulse duration of the first Stokes emission can be changed between 20~45ns by changing the ratio of He/H2 gas pressure with the 308nm pump pulse duration of 65ns. The effects of He on Raman gain in H2 is discussed to explain the experiments results.
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Key words:
- stimulated raman scattering /
- mixture gas raman medium
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