Inhibition of stimulated Raman scattering due to the excitation of stimulated Brillouin scattering

Zhao, Yao and Yu, Lu-Le and Weng, Su-Ming and Ren, Chuang and Liu, Chuan-Sheng and Sheng, Zheng-Ming (2017) Inhibition of stimulated Raman scattering due to the excitation of stimulated Brillouin scattering. Physics of Plasmas, 24 (9). 092116. ISSN 1070-664X (https://doi.org/10.1063/1.5004689)

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Abstract

The nonlinear coupling between stimulated Raman scattering (SRS) and stimulated Brillouin scattering (SBS) of intense laser in underdense plasma is studied theoretically and numerically. Based upon the fluid model, their coupling equations are derived, and a threshold condition of plasma density perturbations due to SBS for the inhibition of SRS is given. Particle-in-cell simulations show that this condition can be achieved easily by SBS in the so-called fluid regime with kLλD<0.15, where kL is the Langmuir wave number and λD is the Debye length [Kline et al., Phys. Plasmas 13, 055906 (2006)]. SBS can reduce the saturation level of SRS and the temperature of electrons in both homogeneous and inhomogeneous plasma. Numerical simulations also show that this reduced SRS saturation is retained even if the fluid regime condition mentioned above is violated at a later time due to plasma heating.

  • Item type:Article
    ID code:62611
    Dates:
    Date
    Event
    28 September 2017
    Published
    27 August 2017
    Accepted
    Notes:This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. The following article appeared in Zhao, Y., Yu, L-L., Weng, S-M., Ren, C., Liu, C-S., & Sheng, Z-M. (2017). Inhibition of stimulated Raman scattering due to the excitation of stimulated Brillouin scattering. Physics of Plasmas, 24(9), [092116] and may be found at https://doi.org/10.1063/1.5004689
    Subjects:Science > Physics > Plasma physics. Ionized gases
    Department:University of Strathclyde > University of Strathclyde
    Depositing user: Pure Administrator
    Date deposited:14 Dec 2017 16:58
    Last modified:15 Apr 2024 00:19
    Related URLs:
    URI:https://strathprints.strath.ac.uk/id/eprint/62611
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