Interaction of Terahertz Radiation Pulse with a Plasma Layer in a Magnetic Field

Abstract

We consider the interaction of Gaussian pulse of electromagnetic radiation with a plasma layer located in a constant magnetic field directed along the layer boundaries. We show that, when exposed to a long pulse, the transmitted pulse amplitude decreases due to a partial reflection from the layer boundaries and the influence of electron collisions. When exposed to a short pulse, in the case where the frequencies of the waves excited in the layer are far from the transparency region boundaries, the transmitted pulse broadens due to the group-velocity dispersion. If the frequencies of the excited waves are close to the transparency boundaries, the envelope oscillations appear in the transmitted pulse tail.