Transmission of electromagnetic waves through a warm over-dense plasma layer with a dissipative factor

Abstract

The high transparency condition of an overcritical warm plasma layer due to the excitation of electromagnetic surface modes was studied. This procedure requires evanescent incident waves on plasma layers, which is prepared here by placing two dielectric layers on both sides of a plasma film. The consequences for a cold plasma are also discussed and compared. Additionally, the transmission losses due to thermal effects and collisions in the considered structure are studied.

Transmission Matrix and Faraday Rotation in a Structure Composed of Over-Dense Magnetized Plasma, Dielectric, and Prism Layers

“…In the absence of the prism, it is necessary to use a dielectric with 0 < Reε < 1. This has been shown in [6] and [12] by solving the dispersion relation. Because of the presence of a prism in this structure, the restriction 0 < Reε < 1 has been removed.…”

“…However, to this end, the real part of the dielectric permittivity of the dielectric layer must be within the interval 0 < Reε < 1. This has been shown in [6] and [12] by solving the dispersion relation. * corresponding author; e-mail: l-rajaei@qom.ac.ir…”

“…The study of the transmission of electromagnetic waves from normally opaque substances, such as over-dense plasmas, has attracted increasing attention because of its importance in many practical areas [1][2][3][4][5][6]. In the frequency region ω < ω p , an over-dense plasma is completely opaque to electromagnetic waves.…”

“…In the frequency region ω < ω p , an over-dense plasma is completely opaque to electromagnetic waves. However, if surface plasmons are excited then electromagnetic waves can pass over-dense plasma [6][7][8]. The excitation of surface plasmons on the surface of the plasma only occurs in the presence of evanescent waves.…”

“…The dielectric layer damped waves on both sides of the plasma which led to the excitation of the coupled plasmons on both sides of the over-dense plasma layer. The created coupled plasmons can then transfer the incident electromagnetic energy [6,8,12]. In our previous study, we used two dielectric layers, one on each side of a plasma, to produce evanescent waves [11].…”