不同水的衰减系数对受激布里渊散射放大受激拉曼散射的影响

Influences of Different Attenuation Coefficient on Stimulated Brillouin Scattering to Amplify Stimulated Raman Scattering in Water

为了深一步研究水中受激布里渊散射(SBS)和受激拉曼散射(SRS)特性关系,分析了单模激光泵浦下不同水的衰减系数对SBS放大后向受激拉曼散射(BSRS)的影响。由于SBS阈值与水的衰减系数有关,当激发并放大的SBS作为一个新的激发源去激发并增强SRS时,水的衰减系数就会影响SRS的放大效应。实验结果表明,水的衰减系数越小,SBS输出能量越高,同时BSRS的能量也越大。

In order to further study characteristics relationship between stimulated Brillouin scattering and stimulated Raman scattering, the effects of different attenuation coefficient on stimulated Brillouin scattering to amplify stimulated Raman scattering in water pumped by single- mode laser is investigated in this paper. Due to threshold of SBS related with attenuation coefficient of water, when SBS worked as a new source to excite and enhance the SRS, the attenuation coefficient of water affects Amplification effect of SRS. The experimental results indicate that the smaller the attenuation coefficient ,the higher the output energy of SBS, meanwhile the bigger the energy of BSRS.