Electromagnetic field self-focusing in an active medium

1979 ◽  
Vol 22 (8) ◽  
pp. 656-660
Author(s):  
N. S. Ginzburg ◽  
N. D. Milovskii ◽  
T. V. Yastrebova
Keyword(s):  
Electromagnetic Field ◽  
Active Medium ◽  
Self Focusing

scholarly journals Comparative Analysis of the Dynamical Spectra of a Polarization of an Active Medium and an Electromagnetic Field in the Superradiant Heterolasers

2018 ◽  
Vol 3 (6) ◽  
pp. 160
Author(s):  
Vl V Kocharovsky ◽  
A S Gavrilov ◽  
E R Kocharovskaya ◽  
A V Mishin ◽  
I S Ryabinin ◽  
...  
Keyword(s):  
Electromagnetic Field ◽  
Comparative Analysis ◽  
Active Medium ◽  
Dynamical Spectra

.

On the cubic and cubic-quintic optical vortices equations

2016 ◽  
Vol 22 (2) ◽  
Author(s):  
Carlo Greco
Keyword(s):  
Electromagnetic Field ◽  
Light Beam ◽  
Optical Field ◽  
The Self ◽  
Optical Vortices ◽  
Cubic Nonlinearity ◽  
Various Boundary Conditions ◽  
Self Focusing ◽  
Ring Shaped Structure ◽  
Point Type

AbstractAn optical vortex can appear when a light beam with nonzero angular momentum propagates in a suitable nonlinear medium. In some situations has been observed that the light intensity vanish at the center of the vortex (where the phase of the electromagnetic field is undefined), while the light beam assumes a ring-shaped structure. In this paper we consider two classical cases in which such kind of phenomena occur: the case of the self focusing cubic nonlinearity, and the case of competing quintic and cubic nonlinearity. In both cases we study the nonlinear Schrödinger equation of the optical field (with various boundary conditions) by means of min-max methods, and we prove the existence of saddle point type solutions, as well as minimum type solutions.

Comparison of high- and low-frequency electromagnetic field analysis

1993 ◽  
Vol 3 (3) ◽  
pp. 363-371 ◽  
Author(s):  
A. Konrad ◽  
I. A. Tsukerman
Keyword(s):  
Electromagnetic Field ◽  
Low Frequency ◽  
Field Analysis

MAGNETOFLUIDIC MATERIAL AS AN ACTIVE MEDIUM FOR ACOUSTICAL SENSORS

1990 ◽  
Vol 51 (C2) ◽  
pp. C2-903-C2-906
Author(s):  
M. A. SARBU ◽  
M. I. PISO
Keyword(s):  
Active Medium
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