Smoothing by spectral dispersion (SSD) is a beam smoothing technology aiming at improving irradiance uniformity in laser inertial confinement fusion, which has the potential to suppress many kinds of laser–plasma instabilities. Different effectivenesses of SSD on the suppression of instabilities were reported in previous works, suggesting SSD has different effects on different instabilities under various laser and plasma conditions. In this paper, inhibition of stimulated Raman side-scattering, deduced from the decrease in side-scattered light and hot electrons, in plastic plasmas at moderate laser intensity is observed in experiments with the application of one-dimensional SSD, the reason for which is deduced to be related to the suppression of filamentation. In contrast, two-plasmon decay and backward Raman scattering were not effectively suppressed by SSD in the experiments, the reason for which could be attributed to the limited modulation frequency and the directions of growth with respect to SSD induced rapid motion of laser spots.

中文翻译：

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通过光谱色散通过一维平滑抑制受激拉曼侧向散射

光谱色散平滑（SSD）是一种光束平滑技术，旨在提高激光惯性约束聚变中的辐照均匀性，具有抑制多种激光等离子体不稳定性的潜力。先前的工作报告了SSD对抑制不稳定性的不同效果，表明SSD在各种激光和等离子体条件下对不同的不稳定性有不同的影响。在本文中，在应用一维 SSD 的实验中观察到在中等激光强度的塑料等离子体中受激拉曼侧向散射的抑制，这是由侧向散射光和热电子的减少推导出来的，其原因是推测与抑制成丝有关。相比之下，