Indian Journal of Pure and Applied Physics

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Self-Focusing and Defocusing of Lorentz-Gauss Laser Beam in Collisionless Plasma


Affiliations
1 Department of Physics, Devchand College, Arjunnagar, Maharashtra 591 237, India
2 Department of Physics, Shivaji University, Kolhapur, Maharashtra 416 004, India
 

The propagation of Lorentz-Gauss (L-G) Laser beam in collisionless plasma is investigated. Based on WKB and paraxial approximations, coupled differential equations for beam-width parameters in two transverse dimensions of L-G beam are derived under the parabolic equation approach. The self-focusing and self-defocusing characters of L-G beam are numerically demonstrated. The influence of Lorentz width on the propagation of L-G beam through plasma is specifically considered. It is found that the heterogeneous intensity distribution of L-G beam plays a vital role in its propagation dynamics through plasmas.

Keywords

Lorentz-Gauss; Self-focusing; Collisionless plasma.
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  • Self-Focusing and Defocusing of Lorentz-Gauss Laser Beam in Collisionless Plasma

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Authors

Prajakta P. Patila
Department of Physics, Devchand College, Arjunnagar, Maharashtra 591 237, India
S. D. Patil
Department of Physics, Devchand College, Arjunnagar, Maharashtra 591 237, India
M. V. Takale
Department of Physics, Shivaji University, Kolhapur, Maharashtra 416 004, India

Abstract


The propagation of Lorentz-Gauss (L-G) Laser beam in collisionless plasma is investigated. Based on WKB and paraxial approximations, coupled differential equations for beam-width parameters in two transverse dimensions of L-G beam are derived under the parabolic equation approach. The self-focusing and self-defocusing characters of L-G beam are numerically demonstrated. The influence of Lorentz width on the propagation of L-G beam through plasma is specifically considered. It is found that the heterogeneous intensity distribution of L-G beam plays a vital role in its propagation dynamics through plasmas.

Keywords


Lorentz-Gauss; Self-focusing; Collisionless plasma.

References