Bandwidth effects in stimulated Brillouin scattering driven by partially incoherent light
Bandwidth effects in stimulated Brillouin scattering driven by partially incoherent light
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DOI：
10.1088/1361-6587/ac11b5
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发表时间：
2021-04
影响因子：
2.2
通讯作者：
B. Brandao;J. E. Santos;R. Trines;R. Bingham;L. Silva
中科院分区：
文献类型：
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作者：
B. Brandao;J. E. Santos;R. Trines;R. Bingham;L. Silva
利用广义Wigner-Moyal辐射统计理论，得到了任意统计宽带辐射场驱动下受激布里渊散射（SBS）的一般色散关系。从我们的一般结果中恢复了单色极限，再现了经典的单色色散关系。通过数值求解色散关系，进一步研究了不稳定性增长率作为泵浦波带宽、入射场强和散射波波数的同时函数的行为。我们的结果表明，SBS的生长速率可以减少1/3的带宽为0.3 nm，典型的实验参数。
A generalized Wigner–Moyal statistical theory of radiation is used to obtain a general dispersion relation for stimulated Brillouin Scattering (SBS) driven by a broadband radiation field with arbitrary statistics. The monochromatic limit is recovered from our general result, reproducing the classic monochromatic dispersion relation. The behavior of the growth rate of the instability as a simultaneous function of the bandwidth of the pump wave, the intensity of the incident field and the wave number of the scattered wave is further explored by numerically solving the dispersion relation. Our results show that the growth rate of SBS can be reduced by 1/3 for a bandwidth of 0.3 nm, for typical experimental parameters.