中国物理B ›› 2012, Vol. 21 ›› Issue (1): 15202-015202.doi: 10.1088/1674-1056/21/1/015202

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Bursting behaviours in cascaded stimulated Brillouin scattering

刘占军1, 贺贤土2, 郑春阳2, 王宇钢3   

  1. (1)Institute of Applied Physics and Computational Mathematics, Beijing 100094, China; (2)Institute of Applied Physics and Computational Mathematics, Beijing 100094, China; State Key Laboratory of Nuclear Physics and Technology, Center for Applied Physics and Technology, Peking University, Beijing 100871, China; (3)State Key Laboratory of Nuclear Physics and Technology, Center for Applied Physics and Technology, Peking University, Beijing 100871, China
  • 收稿日期:2011-06-11 修回日期:2011-07-14 出版日期:2012-01-15 发布日期:2012-01-20
  • 基金资助:
    Project supported by the Science and Technology Funds of China Academy of Engineering Physics (Grant Nos. 2010B0102018 and 2010A0102004), the National Basic Research Program of China (Grant No. 2010CB832904), and the National Natural Science Foundation of

Bursting behaviours in cascaded stimulated Brillouin scattering

Liu Zhan-Jun(刘占军)a) ^†, He Xian-Tu(贺贤土)a) b), Zheng Chun-Yang(郑春阳)a) b), and Wang Yu-Gang(王宇钢)b)   

  1. a Institute of Applied Physics and Computational Mathematics, Beijing 100094, China; b State Key Laboratory of Nuclear Physics and Technology, Center for Applied Physics and Technology, Peking University, Beijing 100871, China
  • Received:2011-06-11 Revised:2011-07-14 Online:2012-01-15 Published:2012-01-20
  • Supported by:
    Project supported by the Science and Technology Funds of China Academy of Engineering Physics (Grant Nos. 2010B0102018 and 2010A0102004), the National Basic Research Program of China (Grant No. 2010CB832904), and the National Natural Science Foundation of

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摘要： Stimulated Brillouin scattering is studied by numerically solving the Vlasov-Maxwell system. A cascade of stimulated Brillouin scattering can occur when a linearly polarized laser pulse propagates in a plasma. It is found that a stimulated Brillouin scattering cascade can reduce the scattering and increase the transmission of light, as well as introduce a bursting behaviour in the evolution of the laser-plasma interaction. The bursting time in the reflectivity is found to be less than half the ion acoustic period. The ion temperature can affect the stimulated Brillouin scattering cascade, which can repeat several ×at low ion temperatures and can be completely eliminated at high ion temperatures. For stimulated Brillouin scattering saturation, higher-harmonic generation and wave-wave interaction of the excited ion acoustic waves can restrict the amplitude of the latter. In addition, stimulated Brillouin scattering cascade can restrict the amplitude of the scattered light.

关键词: bursting behaviour, stimulated Brillouin scattering, cascade

Abstract: Stimulated Brillouin scattering is studied by numerically solving the Vlasov-Maxwell system. A cascade of stimulated Brillouin scattering can occur when a linearly polarized laser pulse propagates in a plasma. It is found that a stimulated Brillouin scattering cascade can reduce the scattering and increase the transmission of light, as well as introduce a bursting behaviour in the evolution of the laser-plasma interaction. The bursting time in the reflectivity is found to be less than half the ion acoustic period. The ion temperature can affect the stimulated Brillouin scattering cascade, which can repeat several ×at low ion temperatures and can be completely eliminated at high ion temperatures. For stimulated Brillouin scattering saturation, higher-harmonic generation and wave-wave interaction of the excited ion acoustic waves can restrict the amplitude of the latter. In addition, stimulated Brillouin scattering cascade can restrict the amplitude of the scattered light.

Key words: bursting behaviour, stimulated Brillouin scattering, cascade

中图分类号:  (Nonlinear phenomena: waves, wave propagation, and other interactions (including parametric effects, mode coupling, ponderomotive effects, etc.))

  • 52.35.Mw
52.25.Dg (Plasma kinetic equations) 52.25.Os (Emission, absorption, and scattering of electromagnetic radiation ?) 52.38.Bv (Rayleigh scattering; stimulated Brillouin and Raman scattering)