Nonlinear interaction of intense electromagnetic waves with a magnetoactive electron-positron-ion plasma

Abstract

The nonlinear coupling between circularly polarized electromagnetic (CPEM) waves and acoustic-like waves in a magnetoactive electron-positron-ion (e-p-i) plasma is studied, taking into account the relativistic motion of electrons and positrons. The possibility of modulational instability and its growth rate as well as the envelope soliton formation and its characteristics in such plasmas are investigated. It is found that the growth rate of modulation instability increases in the case that ωc/ω<1 (ωc and ω are the electron gyrofrequency and the CPEM wave frequency, respectively) and decreases in the case that ωc/ω>1. It is also shown that in a magnetoactive e-p-i plasma, the width of bright soliton increases/decreases in case of (ωc/ω)<1/(ωc/ω)>1 by increasing the magnetic field strength.

Non‐linear absorption of an intense laser pulse propagating in wiggler‐assisted underdense collisional plasma

“…In fact, it is proposed that the z > 0 region is taken to be filled with a homogeneous density profile of plasma with a plasma‐vacuum interface at z = 0. Now, to formulate the non‐linear propagation of an intense laser pulse through an underdense magnetized collisional isothermal plasma in the non‐relativistic regime, let us employ Maxwell's equations described as, …”

Nonlinear parametric interactions in ion-implanted semiconductor plasmas having strain-dependent dielectric constants

“…Nonlinear parametric (NLP) interactions in semiconducting materials have been studied by a number of researchers. [1][2][3][4][5][6][7][8] These interactions provide useful information regarding the physical properties of the host medium. A variety of nonlinear effects have been observed in the interaction of high-power electromagnetic waves with semiconductor plasmas.…”