受激布里渊散射对纳秒激光脉冲光限幅规律

 研究了受激布里渊散射对纳秒激光脉冲的光限幅效应。针对四氯化碳介质研究了受激布里渊散射对2ns激光脉冲的光限幅和稳定输出能量的特性,给出了光限幅特性及输出能量与光限幅介质的结构参数之间的关系。对于输入能量波动范围在 13%的激光脉冲,实验获得输出能量波动范围为 7%,与理论分析的结果基本符合。

Optical limiting of nanosecond laser pulses by stimulated Brillouin scattering

Optical limiting effect of nanosecond laser pulses by stimulated Brillouin scattering is investigated. Optical limiting performances and energy stabilization of 2 ns Nd:YAG laser pulses were studied both theoretically and experimentally in a nonlinear SBS medium CCl4, the influence of parameters of SBS limiter cell on optical limiting effect predicted by theory were conducted, and superior constant output energy was gained with input energy changing in experimental regime. For the ±13% is relative fluctuation of input energy of laser pulses, ±7% relative fluctuation of the transmitted signals was obtained. The experimental results were in good agreement with the predictions by theoretical simulation.