Light propagation in composite materials with gain layers
A.V. Dorofeenkoa,b,
A.A. Zyablovskya,b,
A.A. Pukhova,b,
A.A. Lisyanskyc,
A.P. Vinogradova,b aInstitute for Theoretical and Applied Electrodynamics, Russian Academy of Sciences, ul. Izhorskaya 13/19, Moscow, 127412, Russian Federation bMoscow Institute of Physics and Technology (National Research University), Institutskii per. 9, Dolgoprudny, Moscow Region, 141701, Russian Federation cDepartment of Physics, Queens College of the City University of New York, Flushing, New York, USA
Light propagation through a single gain layer and a multilayer system with gain layers is studied. Results obtained using the Fresnel formulas, Airy’s series summation, and the numerical solution of the nonlinear Maxwell—Bloch equations by the finite difference time domain (FDTD) method are analyzed and compared. Normal and oblique propagation of a wave through a gain layer and a slab of a photonic crystal are examined. For the latter problem, the gain line may be situated in either the pass or stop band of the photonic crystal. It is shown that the monochromatic plane-wave approximation is generally inapplicable for active media, because it leads to results that violate causality. But the problem becomes physically meaningful and correct results can be obtained for all three approaches once the structure of the wavefront and the finite aperture of the beam are taken into account.
PT Journal Article
TI Light propagation in composite materials with gain layers
AU Dorofeenko A V
FAU Dorofeenko AV
AU Zyablovsky A A
FAU Zyablovsky AA
AU Pukhov A A
FAU Pukhov AA
AU Lisyansky A A
FAU Lisyansky AA
AU Vinogradov A P
FAU Vinogradov AP
DP 10 Nov, 2012
TA Phys. Usp.
VI 55
IP 11
PG 1080-1097
RX 10.3367/UFNe.0182.201211b.1157
URL https://ufn.ru/en/articles/2012/11/b/
SO Phys. Usp. 2012 Nov 10;55(11):1080-1097
Received: 27th, October 2010, revised: 16th, July 2012, accepted: 2nd, August 2012