Nonlinear transformation of electromagnetic wave in time-varying plasma medium: Longitudinal propagation

2006 ◽  
Vol 100 (2) ◽  
pp. 023303 ◽  
Author(s):  
Zoran M. Trifkovic ◽  
Bozidar V. Stanic
Keyword(s):  
Electromagnetic Wave ◽  
Nonlinear Transformation ◽  
Time Varying ◽  
Plasma Medium

scholarly journals THE NONLINEAR INTERACTION OF AN ELECTROMAGNETIC WAVE WITH A TIME-DEPENDENT PLASMA MEDIUM

1965 ◽  
Vol 43 (1) ◽  
pp. 38-56 ◽  
Author(s):  
Robert J. Papa
Keyword(s):  
Electromagnetic Wave ◽  
Plane Wave ◽  
Electron Temperature ◽  
Wave Field ◽  
Electron Density ◽  
Nonlinear Interaction ◽  
Time Dependent ◽  
Constitutive Relationship ◽  
Time Varying ◽  
Plasma Medium

A one-dimensional, inhomogeneous model is used to describe the nonlinear interaction of a radio-frequency plane wave with a time-varying plasma medium. A monochromatic plane wave is normally incident upon an electron density profile where the electron density gradients are shallow compared to a wavelength. Changes in electron temperature and electron density are induced which continually alter the pattern of electromagnetic energy deposition into the medium. The electron energy relaxation time is much longer than the period of the electromagnetic wave, so that the electron temperature does not follow the rapid variations in the impressed field. A nonlinear constitutive relationship is derived relating the macroscopic current density to the impressed electric vector, assuming that the wave field is almost monochromatic in the medium. The time-dependent response of the plasma medium may be found by numerically solving the energy-balance equations and the continuity equation for the electron gas. The spread in frequency of the electromagnetic wave field due to the time-varying electrical conductivity may be computed by employing the WKB approximation as a solution to the wave equation for a time-varying medium. Graphs are presented which represent the time-dependent response of the electron temperature and electron density as a function of the incident r-f. field amplitude.

Trapping of an electromagnetic wave by the boundary of a time-varying plasma

1998 ◽  
Vol 57 (5) ◽  
pp. 5978-5987 ◽  
Author(s):  
M. I. Bakunov ◽  
A. V. Maslov
Keyword(s):  
Electromagnetic Wave ◽  
Time Varying

scholarly journals Electromagnetic wave propagation in spatially homogeneous yet smoothly time-varying dielectric media

2016 ◽  
Vol 178 ◽  
pp. 158-166 ◽  
Author(s):  
Armen G. Hayrapetyan ◽  
Jörg B. Götte ◽  
Karen K. Grigoryan ◽  
Stephan Fritzsche ◽  
Rubik G. Petrosyan
Keyword(s):  
Wave Propagation ◽  
Electromagnetic Wave ◽  
Electromagnetic Wave Propagation ◽  
Time Varying ◽  
Dielectric Media ◽  
Spatially Homogeneous

Scattering Characteristics of Stratified Double Negative Stacks Using the Frequency Dispersive Cold Plasma Medium

2007 ◽  
Vol 62 (5-6) ◽  
pp. 247-253 ◽  
Author(s):  
Cumali Sabah ◽  
Savas Uckun
Keyword(s):  
Wave Propagation ◽  
Electromagnetic Wave ◽  
Electric Field ◽  
Cold Plasma ◽  
Plane Electromagnetic Wave ◽  
Numerical Results ◽  
Double Negative ◽  
Plasma Medium ◽  
Double Positive ◽  
Perpendicular Polarization

We present the wave propagation through stratified double negative stacks to illustrate the scattering characteristics of their structure. The double negative stacks are modeled by using the hypothetical non-dispersive and the frequency dispersive cold plasma media. The stacks are embedded between two double positive media and the incident electric field is assumed a plane electromagnetic wave with any arbitrary polarization. By imposing the boundary conditions, the relations between the fields inside and outside the stacks can be written in a matrix form. Using this transfer matrix, the incident, reflected, and transmitted powers are derived. The variations of the powers for the stratified double negative stacks using the frequency dispersive cold plasma medium have not been investigated yet, in detail. Thus, their characteristics for the perpendicular polarization is computed and presented in numerical results with the emphasis on the plasma frequencies. It is seen from the numerical results that the stratified double negative stacks can be used as electromagnetic filters at some frequency bands.

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