Suppression of the stimulated Raman scattering (SRS) by a stochastic phase low-coherence laser (SPLL) in homogeneous plasma is investigated by theoretical analysis and one-dimensional particle-in-cell (PIC) simulation. A simple model is established, in which the SPLL is modelled as a combination of a monochromatic laser and a broadband laser. When the phase randomness increases, the bandwidth of the SPLL is broadened and the energy proportion of the monochromatic laser component is reduced. PIC simulation shows that the SPLL can effectively suppress SRS and hot electron generation. Various phenomena in the nonlinear process, such as the nonlinear frequency shift and the competition between forward-scattering and back-scattering modes, are explained in detail.
均质等离子体中随机相位低相干激光（SPLL）对受激拉曼散射（SRS）的抑制通过理论分析和一维粒子模拟（PIC）进行研究。建立了一个简单模型，其中SPLL被建模为单色激光与宽带激光的组合。当相位随机性增加时，SPLL的带宽展宽，单色激光分量的能量比例降低。粒子模拟表明，SPLL能够有效抑制SRS和热电子产生。非线性过程中的各种现象，如非线性频移以及前向散射与后向散射模式之间的竞争，均得到了详细解释。