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Volume 26 - ICOP & ICPET 2020
ICOP & ICPET _ INPC _ ICOFS 2020, 26 - ICOP & ICPET 2020: 977-980 |
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Gholipour E, Fallah R, Khorashadizadeh S M, Niknam A R. Self-focusing of Gaussian laser beams in magnetized inhomogeneous plasma. ICOP & ICPET _ INPC _ ICOFS 2020; 26 :977-980
URL: http://opsi.ir/article-1-2179-en.html
URL: http://opsi.ir/article-1-2179-en.html
1- Department of physics, University of Birjand, Birjand, Iran
2- Shahid Beheshti University
2- Shahid Beheshti University
Abstract: (1504 Views)
In this paper, the self-focusing of a Gaussian laser beams in the magnetized inhomogeneous cold plasma is investigated by considering the linear and exponential profiles for electron density. For this purpose, using the Maxwell’s and the plasma hydrodynamic equations, a relation for the changes of laser spot radius is obtained. Using the Runge-Kutta method, the effect of the plasma inhomogeneity, external magnetic field, and laser frequency on the beam self-focusing is investigated. The results indicate that the increase of the magnetic field strength and laser frequency enhance the beam self-focusing and the initial plasma density affects the beam propagation in the plasma. Comparison of the results shows that the self-focusing in the exponential inhomogeneous plasma occurs at a shorter distance than the linear inhomogeneous plasma, but the variations of laser spot radius in the plasma with linear density profile is more intense than the exponential profile.
Keywords: Laser plasma interaction, Self-focusing, inhomogeneous plasma, Magnetized plasma, Gaussian beams.
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