Wave scattering by metal-dielectric multilayer structures with gain
R. S. Savelev+, I. V. Shadrivov*, Yu. S. Kivshar+*
+ITMO University, 197101 St. Petersburg, Russia
*Nonlinear Physics Centere, Research School of Physics and Engineering,
Australian National University, Acton, ACT 2601, Australia
Abstract
We study wave scattering by multi-layer metal-dielectric structures
of a finite extent characterized by a hyperbolic-like dispersion. We find the
regimes of wave propagation when substantial compensation of losses becomes
possible with the use of a gain medium with realistic parameters. We discuss
the Purcell effect in these structures and its possible implications on the
performance of the loss compensation.