Effects of magnetized plasma on the propagation properties of obliquely incident THz waves

Abstract

In this paper, the propagation of obliquely incident terahertz (THz) wave in a non-uniform magnetized plasma slab is investigated. The electron density and the collision frequency across the plasma are assumed to have a Gaussian profile. To deal with the non-uniform profile, the plasma slab is divided into a series of subslabs. For more accuracy, twice reflection between the interfaces of each subslab is considered, and the corresponding transmitted and reflected power are derived. Effects of collision frequency, magnetic field amplitude and incident angle on THz wave propagation characteristics are investigated. Specifically, the refraction angles in each subslab are presented. These simulation results are meaningful for the hypersonic flight communication.

Propagation of terahertz waves in nonuniform plasma slab under “electromagnetic window”

“…It is widely used to analyze electromagnetic wave transmission characteristics in plasma, such as through using the Wentzel-Kramer-Brillouin (WKB) method, scattering matrix method (SMM), finite-difference time-domain (FDTD) method. [14][15][16][17][18][19][20][21][22][23][24][25] Yu et al used the WKB method to study the transmission characteristics of terahertz waves in magnetized plasmas with different electron density distributions. [26] Numerical simulation results demonstrated that the plasma density, plasma slab thickness, plasma density models, and collision frequency significantly influence the attenuation and transmittance of terahertz waves.…”

Propagation characteristics of oblique incidence terahertz wave through non-uniform plasma

“…Cao et al [33] studied the propagation characteristics of obliquely incident THz waves though dusty plasma using the PMM, where the electron density distribution of the dusty plasma was assumed to be parabolic. Based on the twice reflection model, Tian et al [34] investigated the obliquely incident wave through a nonuniform magnetized plasma slab, in which both the electron density and the collision frequency across the plasma were assumed to be in a Gaussian profile.…”

“…To solve the problem under study, the non-uniform plasma was divided into a series of layers with uniform electron density. [34] Nevertheless, this dividing method fails when one encounters plasma with a high gradient electron density distribution. To overcome this difficulty, the FDTD is a good choice.…”

Forward recursion approach of electromagnetic wave propagation characteristics in a slab of inhomogeneous magnetoplasma

“…Tian et. al., [12] investigated the effect of collision frequency and magnetic field amplitude on THz EM-wave propagation in a magnetized, collisional plasma slab. Chen Cong et.…”