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Proceedings Paper

Resonant instability of laser speckles in a semicollisional underdense plasma
Author(s): A. V. Brantov; V. Yu. Bychenkov; V. T. Tikhonchuk; J. Myatt
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Paper Abstract

Instability of a nonlinear laser filament formed due to cumulative effect of the ponderomotive and thermal self- focusing has been investigated in a weakly collisional underdense plasmas. This instability corresponds to the near-forward stimulated Brillouin scattering with excitation of a waveguide electromagnetic mode coupled to a localized supersonic density perturbation. Comparison with the collision-less ponderomotive case demonstrates a significant reduction of the instability threshold and a modification of its characteristics due to nonlocal thermal effects.

Paper Details

Date Published: 23 April 2001
PDF: 4 pages
Proc. SPIE 4424, ECLIM 2000: 26th European Conference on Laser Interaction with Matter, (23 April 2001); doi: 10.1117/12.425628
Show Author Affiliations
A. V. Brantov, Ecole Polytechnique and P.N. Lebedev Physical Institute (France)
V. Yu. Bychenkov, P.N. Lebedev Physical Institute and Univ. of Alberta (Russia)
V. T. Tikhonchuk, P.N. Lebedev Physical Institute and Ecole Polytechnique (Russia)
J. Myatt, Ecole Polytechnique (France)

Published in SPIE Proceedings Vol. 4424:
ECLIM 2000: 26th European Conference on Laser Interaction with Matter
Milan Kalal; Karel Rohlena; Milan Sinor, Editor(s)

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