Interaction of parametric instabilities from 3 omega and 2 omega lasers in large-scale inhomogeneous plasmas
Interaction of parametric instabilities from 3 omega and 2 omega lasers in large-scale inhomogeneous plasmas
复制标题
大规模非均匀等离子体中 3 Ω 和 2 Ω 激光器参数不稳定性的相互作用
DOI：
10.1088/1741-4326/ab7f14
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发表时间：
2020
期刊：
影响因子：
3.3
通讯作者：
He X. T.
中科院分区：
文献类型：
--
作者：
Feng Q. S.;Liu Z. J.;Cao L. H.;Xiao C. Z.;Hao L.;Zheng C. Y.;Ning C.;He X. T.
提出了3ω泵浦光向2ω泵浦光产生的受激布里渊散射（SBS）传递能量的机理。3ω泵浦光产生的受激拉曼散射（SRS）的后向散射光可以作为2ω泵浦光的SBS的种子，导致后者的增加。在3ω泵浦光中加入2ω泵浦光会降低3ω泵浦光产生的SBS的反射率。随着2ω光强与2ω和3ω光强之比的增大，总反射率先减小后增大
The mechanism of energy transfer from 3ω pump light to stimulated Brillouin scattering (SBS) generated by 2ω pump light is proposed. The backscattering light of stimulated Raman scattering (SRS) generated by 3ω pump light can work as a seed of the SBS of 2ω pump light, which results in the increase of the latter. Adding 2ω pump light into 3ω pump light will decrease the reflectivity of SBS generated from 3ω pump light. The total reflectivity will first decrease and then increase with an increase of the ratio of 2ω light intensity to the intensity of 2ω and 3ω lights