中国物理B ›› 2006, Vol. 15 ›› Issue (9): 2046-2052.doi: 10.1088/1009-1963/15/9/026

• PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES • 上一篇    下一篇

Large amplitude electromagnetic solitons in intense laser plasma interaction

李百文1, IshiguroS2, SkoricMM2   

  1. (1)Institute of Applied Physics and Computational Mathematics, Beijing 100088, China; (2)The Graduate University for Advanced Studies and National Institute for Fusion Science, Toki 509-5292, Japan
  • 收稿日期:2006-01-06 修回日期:2006-02-10 出版日期:2006-09-20 发布日期:2006-09-20
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos 10575015, 10445003, 10335020 and 10375011), the National Key Laboratory of Laser Fusion, China (Grant No 51480010205ZW0901), the Scientific Research Foundation for Returned Overseas Chinese Scholars, State Education Ministry and the Foundation of China Academy of Engineering Physics (Grant No 20060217).

Large amplitude electromagnetic solitons in intense laser plasma interaction

Li Bai-Wen(李百文)a), Ishiguro Sb), and Skoric M Mb)   

  1. a Institute of Applied Physics and Computational Mathematics, Beijing 100088, China; b The Graduate University for Advanced Studies and National Institute for Fusion Science, Toki 509-5292, Japan
  • Received:2006-01-06 Revised:2006-02-10 Online:2006-09-20 Published:2006-09-20
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos 10575015, 10445003, 10335020 and 10375011), the National Key Laboratory of Laser Fusion, China (Grant No 51480010205ZW0901), the Scientific Research Foundation for Returned Overseas Chinese Scholars, State Education Ministry and the Foundation of China Academy of Engineering Physics (Grant No 20060217).

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摘要： This paper shows that the standing, backward- and forward-accelerated large amplitude relativistic electromagnetic solitons induced by intense laser pulse in long underdense collisionless homogeneous plasmas can be observed by particle simulations. In addition to the inhomogeneity of the plasma density, the acceleration of the solitons also depends upon not only the laser amplitude but also the plasma length. The electromagnetic frequency of the solitons is between about half and one of the unperturbed electron plasma frequency. The electrostatic field inside the soliton has a one-cycle structure in space, while the transverse electric and magnetic fields have half-cycle and one-cycle structure respectively. Analytical estimates for the existence of the solitons and their electromagnetic frequencies qualitatively coincide with our simulation results.

Abstract: This paper shows that the standing, backward- and forward-accelerated large amplitude relativistic electromagnetic solitons induced by intense laser pulse in long underdense collisionless homogeneous plasmas can be observed by particle simulations. In addition to the inhomogeneity of the plasma density, the acceleration of the solitons also depends upon not only the laser amplitude but also the plasma length. The electromagnetic frequency of the solitons is between about half and one of the unperturbed electron plasma frequency. The electrostatic field inside the soliton has a one-cycle structure in space, while the transverse electric and magnetic fields have half-cycle and one-cycle structure respectively. Analytical estimates for the existence of the solitons and their electromagnetic frequencies qualitatively coincide with our simulation results.

Key words: particle-in-cell (PIC), Raman cascade, photon-condensation, relativistic EM soliton

中图分类号:  (Gas lasers including excimer and metal-vapor lasers)

  • 42.55.Lt
42.60.By (Design of specific laser systems) 42.60.Fc (Modulation, tuning, and mode locking) 42.60.Da (Resonators, cavities, amplifiers, arrays, and rings)