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Self-focusing and self-phase modulation of an elliptic Gaussian laser beam in collisionless magnetoplasma

Published online by Cambridge University Press:  21 September 2006

NARESHPAL SINGH SAINI  and
TARSEM SINGH GILL
NARESHPAL SINGH SAINI
Affiliation:
Department of Physics, Guru Nanak Dev University, Amritsar, India
TARSEM SINGH GILL
Affiliation:
Department of Physics, Guru Nanak Dev University, Amritsar, India
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Abstract

The problem of nonlinear self-focusing of elliptic Gaussian laser beam in collisionless magnetized plasma is studied using variation approach. The dynamics of the combined effects of nonlinearity and spatial diffraction is presented. With a and b as the beam width parameters of the beam along x and y directions, respectively, the phenomenon of cross-focusing is observed where focusing of a results in defocusing of b and vice versa. Although no stationary self-trapping is observed, oscillatory self-trapping occurs far below the threshold. The regularized phase is always negative.

Keywords

EllipticRegularized phaseSelf-focusingSelf-phase modulation
Type
Research Article
Information
Laser and Particle Beams , Volume 24 , Issue 3 , September 2006 , pp. 447 - 453
Copyright
© 2006 Cambridge University Press

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