受激布里渊散射相位共轭激光组束规律的研究
Study of beam combination by stimulated Brillouin scattering
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摘要: 提出了一种新的SBS激光组束的方法。此方法中，一束按时间分布的激光脉冲序列作为泵浦光从SBS放大池的一端入射，另一束Stokes频移种子光从SBS池的另一端入射，Stokes种子光在SBS池的相互作用区提取泵浦光能量。研究了组束效率和输出脉宽随脉冲串个数、间隔和泵浦功率密度等的变化规律。研究结果表明种子注入型泵浦脉冲串的受激布里渊散射相位共轭组束是一种高效的组束方法。Abstract: In this paper, a new method of laser beam combination by SBS is proposed. In this method, the pump pulse cluster, which consists of series pulses that is distributed by various time, is incident at one side while the Stokes seed is incident at the other side of the SBS cell, The Stokes seed beam extracts energy from the input pulse cluster in the interaction region of the SBS cell. Energy reflectivity and pulse width of the Stokes seed are calculated on condition of various pulse cluster, seed and medium. The results show that highly effective beam combination is obtained by back injecting Stokes seed into amplified SBS cell and the extracting energy from the pulse cluster of the pump.
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