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Proceedings Paper

Anisotropic filamentation and modulation of ultra-intense linearly polarized laser light in overdense plasma
Author(s): Katsunobu Nishihara; Tetsuya Honda; Sergei V. Bulanov; Zhengming Sheng
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Paper Abstract

3D particle-in-cell simulations of the interaction of an ultra-intense linearly-polarized laser light with an over- dense plasma are presented. Intense laser radiation is shown to be unstable against modulation both in the direction of the laser propagation direction and in the direction perpendicular to the polarization direction. Growth rate of the instability has a maximum of the order of 0.1(omega) 0 when laser frequency (omega) 0 is of the order of the plasma frequency modified due to the relativistic increase of electron mass in the laser field. As a result the laser breaks up into clumps with the size of the relativistic collision-less skin depth. Analytical description of the instability is also presented. Dependence of the growth rate on the laser intensity and wavenumber of perturbations is discussed.

Paper Details

Date Published: 11 January 2000
PDF: 8 pages
Proc. SPIE 3886, High-Power Lasers in Energy Engineering, (11 January 2000); doi: 10.1117/12.375096
Show Author Affiliations
Katsunobu Nishihara, Institute of Laser Engineering/Osaka Univ. (Japan)
Tetsuya Honda, Sony Corp. (Japan)
Sergei V. Bulanov, General Physics Institute (Russia)
Zhengming Sheng, Institute of Laser Engineering/Osaka Univ. (Japan)

Published in SPIE Proceedings Vol. 3886:
High-Power Lasers in Energy Engineering
Kunioki Mima; Gerald L. Kulcinski; William J. Hogan, Editor(s)

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