The influence of static magnetic field on nonlinear response of a plasma background in the presence of two laser beams with different profiles (Hermite– and Laguerre–Gaussian)

Abstract

This paper presents a theoretical study on terahertz (THz) radiation produced by the nonlinear interaction of two laser beams of Laguerre-Gaussian and Hermite-Gaussian profiles with axially magnetized ripple density plasma. The influence of the external magnetic field on the optimization process of the THz field amplitude and on the field profile of the emitted THz wave are investigated. Due to the dispersion and anisotropy of the magneto-active plasma medium, the effect of beat frequency on the electric field amplitude of THz radiation is also examined. The results reveal that the external magnetic field can enhance the THz field amplitude without significantly affecting the THz field profile.