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Title: Self-focusing of circularly polarized laser pulse in the hot magnetized plasma in the quasi-neutral limit

Abstract

In this paper the problem of self-focusing of an intense laser beam in the hot magnetized plasma is studied. Using a relativistic two-fluid model, the propagation of intense circularly polarized laser beam along the external magnetic field is considered. The nonlinear equation describing the interaction of laser beam with magnetized hot plasma in the quasi-neutral approximation is derived. Expanding the nonlinear terms of current density and saving only the parabolic nonlinear terms, we investigated the self-focusing phenomenon for right- and left-hand circularly polarized laser beam. The evolution of laser beam spot size with Gaussian profile for both polarizations is considered and the effect of the temperature and external magnetic field on the self-focusing quality is studied. It is shown that for the right-hand polarization, the effect of temperature and external magnetic field on the self-focusing property is more considerable.

Authors:
;  [1]
  1. Department of Physics, University of Mohaghegh Ardabili, P.O. Box 179, Ardabil (Iran, Islamic Republic of)
Publication Date:
OSTI Identifier:
22068885
Resource Type:
Journal Article
Journal Name:
Physics of Plasmas
Additional Journal Information:
Journal Volume: 19; Journal Issue: 11; Other Information: (c) 2012 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1070-664X
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; APPROXIMATIONS; BEAM-PLASMA SYSTEMS; CURRENT DENSITY; FOCUSING; HOT PLASMA; LASERS; MAGNETIC FIELDS; NONLINEAR PROBLEMS; PHOTON BEAMS; POLARIZATION; PULSES; RELATIVISTIC RANGE; TEMPERATURE DEPENDENCE

Citation Formats

Sepehri Javan, N., and Nasirzadeh, Zh. Self-focusing of circularly polarized laser pulse in the hot magnetized plasma in the quasi-neutral limit. United States: N. p., 2012. Web. doi:10.1063/1.4766753.
Sepehri Javan, N., & Nasirzadeh, Zh. Self-focusing of circularly polarized laser pulse in the hot magnetized plasma in the quasi-neutral limit. United States. doi:10.1063/1.4766753.
Sepehri Javan, N., and Nasirzadeh, Zh. Thu . "Self-focusing of circularly polarized laser pulse in the hot magnetized plasma in the quasi-neutral limit". United States. doi:10.1063/1.4766753.
@article{osti_22068885,
title = {Self-focusing of circularly polarized laser pulse in the hot magnetized plasma in the quasi-neutral limit},
author = {Sepehri Javan, N. and Nasirzadeh, Zh.},
abstractNote = {In this paper the problem of self-focusing of an intense laser beam in the hot magnetized plasma is studied. Using a relativistic two-fluid model, the propagation of intense circularly polarized laser beam along the external magnetic field is considered. The nonlinear equation describing the interaction of laser beam with magnetized hot plasma in the quasi-neutral approximation is derived. Expanding the nonlinear terms of current density and saving only the parabolic nonlinear terms, we investigated the self-focusing phenomenon for right- and left-hand circularly polarized laser beam. The evolution of laser beam spot size with Gaussian profile for both polarizations is considered and the effect of the temperature and external magnetic field on the self-focusing quality is studied. It is shown that for the right-hand polarization, the effect of temperature and external magnetic field on the self-focusing property is more considerable.},
doi = {10.1063/1.4766753},
journal = {Physics of Plasmas},
issn = {1070-664X},
number = 11,
volume = 19,
place = {United States},
year = {2012},
month = {11}
}