Abstract
Stimulated Brillouin scattering (SBS) is a basic problem for laser–plasma interactions. In this work, two perpendicular linear polarization lasers with different frequencies are combined to form a new beam. The polarization of the new beam varies between linear and ellipse, while the intensity remains constant. By adopting this method, a significant suppression of SBS is predicted due to the reduction in the effective wave–wave interaction lengths. Additionally, two linearly polarized beams would be easier to use in an experiment than an alternate approach using two circularly polarized beams. The suppression of SBS is modeled with a nonlinear wave–wave coupling model, and the model is verified with 1D particle-in-cell simulations.
Highlights
INTRODUCTIONStimulated Raman scattering (SRS) and stimulated Brillouin scattering (SBS) are basic problems for laser–plasma interactions. They scatter incident laser energy and cause other harmful effects in both direct and indirect drivers. In indirect inertial confinement fusion (ICF), SRS is dominant for the inner beams, and SBS is dominant for the outer beams. Many methods have been proposed to reduce the effect of laser–plasma interactions by controlling the laser parameters or plasma parameters
In indirect inertial confinement fusion (ICF), Stimulated Raman scattering (SRS) is dominant for the inner beams, and stimulated Brillouin scattering (SBS) is dominant for the outer beams
A new form of incident light is proposed, which is a combination of two perpendicular linear polarization lasers with different frequencies
Summary
Stimulated Raman scattering (SRS) and stimulated Brillouin scattering (SBS) are basic problems for laser–plasma interactions. They scatter incident laser energy and cause other harmful effects in both direct and indirect drivers. In indirect inertial confinement fusion (ICF), SRS is dominant for the inner beams, and SBS is dominant for the outer beams. Many methods have been proposed to reduce the effect of laser–plasma interactions by controlling the laser parameters or plasma parameters. Stimulated Raman scattering (SRS) and stimulated Brillouin scattering (SBS) are basic problems for laser–plasma interactions.. Stimulated Raman scattering (SRS) and stimulated Brillouin scattering (SBS) are basic problems for laser–plasma interactions.1 They scatter incident laser energy and cause other harmful effects in both direct and indirect drivers.. Many methods have been proposed to reduce the effect of laser–plasma interactions by controlling the laser parameters or plasma parameters. A new form of incident light is proposed, which is a combination of two perpendicular linear polarization lasers with different frequencies.
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