Effect of super-thermal ions and electrons on the modulation instability of a circularly polarized laser pulse in magnetized plasma

Abstract

The modulation instability of a circularly polarized laser pulse in a magnetized non-Maxwellian plasma is investigated. Based on a relativistic fluid model, the nonlinear interaction of an intense circularly polarized laser beam with a non-Maxwellian magnetized plasma is described. Nonlinear dispersion relation and growth rate of the instability for left- and right-hand polarizations are derived. The effect of temperature, external magnetic field, value of Kappa and state of polarization on the growth rate are analyzed. It is shown that the growth rate increases with increase in the magnetic field for the right-hand polarization and inversely it decreases for the left-hand one. Also it is observed that existence of super-thermal particles causes the decrease in the growth.

Nonlinear Dynamics of Circularly Polarized Laser Pulse Propagating in a Magnetized Plasma with q ‐Nonextensive Velocity Distributions

“…In the non-equilibrium state of the Maxwellian magnetized plasma, which is irradiated by a weakly-relativistic laser pulse, momentum of electron can be obtained as [56,57,68] To clarify the situation, let us return to the similar condition in a Maxwellian plasma.…”

“…To clarify the situation, let us return to the similar condition in a Maxwellian plasma. In the non-equilibrium state of the Maxwellian magnetized plasma, which is irradiated by a weakly-relativistic laser pulse, momentum of electron can be obtained as [56,57,68]…”

“…The MI of laser beams in plasmas and dielectrics has been the subject of several publications [47][48][49] .The MI of strong EM waves in plasma with arbitrary large amplitude is studied by Shukla et al in 1987 [50]. Recently the MI of an intense circularly polarized laser beam in the hot magnetized electron-positron and electron gas plasmas was studied by Sepehri Javan [56][57][58]. The MI of a laser pulse in the cold nonmagnetized plasma has been considered by several authors [50,52,53].…”

“…The MI of right-hand elliptically laser pulse in cold magnetized plasma has been investigated by Chen et al in 2011 [55]. Recently the MI of an intense circularly polarized laser beam in the hot magnetized electron-positron and electron gas plasmas was studied by Sepehri Javan [56][57][58]. In nonlinear optics the MI is of fundamental importance for a formation of both temporal and spatial solitons.…”

Negative and positive dust grain effect on the modulation instability of an intense laser propagating in a hot magnetoplasma

“…Recently, the MI of an intense circularly polarized laser beam in the hot magnetized electron-positron and electron-ion (e-i) plasmas as studied by Sepehri Javan [53,54]. Our recent work [55] has extended the MI of the circularly polarized laser beam propagating along an external magnetic field in the non-Maxwellian plasma. In this article we study the MI of an intense laser beam in the magnetized hot dusty plasma.…”