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 modeled as a combination of a monochromatic laser and a broadband laser. When the phase randomness increases, the bandwidth of SPLL is broadened and the energy proportion of the monochromatic laser component is reduced. PIC simulation shows that SPLL can suppress SRS well and effectively control the number and energy of hot electrons. Various phenomena in the nonlinear process, such as the nonlinear frequency shift, the competition between forward-scattering and back-scattering modes, are explained in details.
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