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Self-focusing of asymmetric cosh-Gaussian laser beams propagating through collisionless magnetized plasma

Published online by Cambridge University Press:  02 November 2017

B. D. Vhanmore ,
S. D. Patil ,
A. T. Valkunde ,
T. U. Urunkar ,
K. M. Gavade  and
M. V. Takale
B. D. Vhanmore
Affiliation:
Department of Physics, Shivaji University, Kolhapur 416 004, India
S. D. Patil*
Affiliation:
Department of Physics, Devchand College, Arjunnagar, Kolhapur 591 237, India
A. T. Valkunde
Affiliation:
Department of Physics, Shivaji University, Kolhapur 416 004, India Government Polytechnic, Khamgaon, Buldhana 444 312, India
T. U. Urunkar
Affiliation:
Department of Physics, Shivaji University, Kolhapur 416 004, India
K. M. Gavade
Affiliation:
Department of Physics, Shivaji University, Kolhapur 416 004, India
M. V. Takale
Affiliation:
Department of Physics, Shivaji University, Kolhapur 416 004, India
*
Address correspondence and reprint requests to: S. D. Patil, Department of Physics, Devchand College, Arjunnagar, Kolhapur 591 237, India. E-mail: sdpatil_phy@rediffmail.com
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Abstract

In this paper, self-focusing of asymmetric cosh-Gaussian laser beams in collisionless magnetized plasma has been studied. The non-linearity in dielectric constant considered herein is mainly due to the ponderomotive force. The non-linear coupled differential equations for the beam width parameters in transverse dimensions of the beam have been obtained by using WKB and paraxial approximations under parabolic equation approach. The numerical computation is completed by using fourth-order Runge–Kutta method. The effect of unlike decentered parameters in both transverse dimensions of the beam on self-focusing of cosh-Gaussian beams has been presented. Further, the effect of the static magnetic field and polarization modes of the laser has been explored.

Keywords

asymmetrycosh-Gaussianself-focusingmagnetized plasma
Type
Research Article
Information
Laser and Particle Beams , Volume 35 , Issue 4 , December 2017 , pp. 670 - 676
Copyright
Copyright © Cambridge University Press 2017 

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