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<p>This study investigates the influence of plasma density ripple and magnetic field on stimulated Raman scattering (SRS) and third harmonic generation (THG) within magnetized plasma using a Hermite-cosh-Gaussian (HchG) laser beam. We analyze how periodic density variations enhance electron oscillations, strengthening the SRS and THG. Also, plasma electrons magnetic field suppresses the SRS growth rate approximately by 58%. We derive expressions for the non-linear current density and the growth rate involved by developing a theoretical model. The results demonstrate that an increase in normalized rippled plasma frequency enhances THG, with higher laser amplitudes contributing to further amplification. In contrast, the magnetic field reduces the interaction between the density ripple and plasma waves, leading to suppressed SRS growth. These findings provide valuable insights into structured laser-plasma interactions, which are particularly relevant for applications in high-power laser systems.</p>

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Enhanced third harmonic generation and SRS suppression in magnetized rippled plasma using Hermite cosh Gaussian laser beam

  • 期刊论文

  • 发表日期：

    2025年3月8日

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  • Taruna Azad,
  • Niti Kant,
  • Oriza Kamboj

摘要

This study investigates the influence of plasma density ripple and magnetic field on stimulated Raman scattering (SRS) and third harmonic generation (THG) within magnetized plasma using a Hermite-cosh-Gaussian (HchG) laser beam. We analyze how periodic density variations enhance electron oscillations, strengthening the SRS and THG. Also, plasma electrons magnetic field suppresses the SRS growth rate approximately by 58%. We derive expressions for the non-linear current density and the growth rate involved by developing a theoretical model. The results demonstrate that an increase in normalized rippled plasma frequency enhances THG, with higher laser amplitudes contributing to further amplification. In contrast, the magnetic field reduces the interaction between the density ripple and plasma waves, leading to suppressed SRS growth. These findings provide valuable insights into structured laser-plasma interactions, which are particularly relevant for applications in high-power laser systems.