Mustansiriyah Journal of Pure and Applied Sciences

Initial Spot Size Influence of Hollow Gaussian Laser Beam on the Self-Focusing Phenomenon Inside Magnetized Plasma

Ameer Ali Hassan

Jabir Ibn Hayyan Medical University

Abdul Kareem H. Dagher

Department of Physics, Faculty of Education, Al-Mustansiriyah University

Munther B. Hassan

Department of Physics, Faculty of Science, University of Kufa

DOI: https://doi.org/10.47831/mjpas.v3i2.186

Keywords: Self-focusing Phenomenon, Spot size, Hollow Gaussian laser beam, Relativistic Nonlinearity.

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Abstract

This article presents a theoretical study of the self-focusing process of a hollow Gaussian laser beam(HGLB) inside a plasma medium placed in a magnetic field perpendicular to the direction of the hollow Gaussian laser beam propagation. The self-focusing was studied using relativistic nonlinearity. Particular mathematical equations were derived that describe the nonlinear behavior of hollow Gaussian laser beam when they propagate inside the plasma, and they were solved. This behavior was simulated using the MATLAB program. This study dealt with the effect of Initial Spot Size of hollow Gaussian laser beam on the self-focusing process.