Effects of large laser bandwidth on stimulated Raman scattering instability in underdense plasma

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Zhao, Yao and Yu, Lu-Le and Zheng, Jun and Weng, Su-Ming and Ren, Chuang and Liu, Chuan-Sheng and Sheng, Zheng-Ming (2015) Effects of large laser bandwidth on stimulated Raman scattering instability in underdense plasma. Physics of Plasmas. ISSN 1070-664X (In Press)

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Abstract

The effects of laser bandwidth on stimulated Raman scattering (SRS) instability in underdense plasma are studied by particle-in-cell simulations. In the simulations, sinusoidal frequency modulation of the incident laser pulse is used. By changing the size of bandwidth, it is shown that the linear growth of SRS can be suppressed considerably, provided the laser bandwidth is much larger than the SRS linear growth rate. Simulations also show that by choosing the proper frequency modulation parameters or decreasing the linear growth rate of SRS, the inhibitory effects become more obvious. The plasma electron temperature tends to weaken the bandwidth effects especially when it is over a keV level. The laser bandwidth can only increase the time duration for linear growth but cannot diminish the instability completely.

ORCID iDs

Zhao, Yao, Yu, Lu-Le, Zheng, Jun, Weng, Su-Ming, Ren, Chuang, Liu, Chuan-Sheng and Sheng, Zheng-Ming ORCID logoORCID: https://orcid.org/0000-0002-8823-9993;
  • Item type:Article
    ID code:53026
    Dates:
    Date
    Event
    11 May 2015
    Published
    11 May 2015
    Accepted
    Subjects:Science > Physics
    Department:Faculty of Science > Physics
    Depositing user: Pure Administrator
    Date deposited:15 May 2015 09:10
    Last modified:11 Nov 2024 11:05
    Related URLs:
    URI:https://strathprints.strath.ac.uk/id/eprint/53026
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