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Evolution of a circularly polarized laser beam in an obliquely magnetized plasma channel

Published online by Cambridge University Press:  25 September 2017

Hemlata ,
A.K. Upadhyay  and
P. Jha
Hemlata
Affiliation:
Department of Physics, University of Lucknow, Lucknow 226007, India
A.K. Upadhyay
Affiliation:
Department of Applied Science, Teerthanker Mahaveer University, Moradabad 244001, India
P. Jha*
Affiliation:
Department of Physics, University of Lucknow, Lucknow 226007, India
*
Address correspondence and reprint requests to: Pallavi Jha, Department of Physics, University of Lucknow, Lucknow 226007, India. E-mail: prof.pjha@gmail.com
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Abstract

The evolution of the spot size and amplitude of a circularly polarized laser beam propagating in a plasma channel embedded in an obliquely applied magnetic field has been investigated. The wave equation describing the evolution of the radiation field is set up and a variational technique is used to obtain the equations governing the evolution of the spot size and amplitude. Numerical methods are used to analyze the evolution of the laser beam spot size and amplitude. It is seen that the amplitudes of the two transverse components of the electric field of the laser beam evolve differently, since they are driven by unequal current densities. This leads to the conversion of a circularly polarized laser beam into an elliptically polarized beam, under appropriate conditions.

Keywords

Conversion of circular to elliptically polarized laser beamEvolution of spot size and amplitudeObliquely magnetized plasma channel
Type
Research Article
Information
Laser and Particle Beams , Volume 35 , Issue 4 , December 2017 , pp. 631 - 640
Copyright
Copyright © Cambridge University Press 2017 

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