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

Journal Article · Thu Nov 15 04:00:00 EST 2012 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.4766753· OSTI ID:22068885

Sepehri Javan, N; Nasirzadeh, Zh ^[1]

---

1. Department of Physics, University of Mohaghegh Ardabili, P.O. Box 179, Ardabil (Iran, Islamic Republic of)

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.

• OSTI ID: 22068885
• Journal Information: Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 11 Vol. 19; ISSN PHPAEN; ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

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