title: Strong-interaction-mediated critical coupling at two distinct frequencies.
abstract: I study a multilayered medium consisting of a metal-dielectric composite film, a spacer layer, and a dielectric Bragg reflector. I demonstrate a greater flexibility over the critical coupling phenomenon [Tischler et al., Opt. Lett. 31, 2045 (2006)], whereby nearly all the incident light energy is absorbed by the composite film through suppression of both transmission and reflection from the structure. For a larger volume fraction of the metal inclusions, strong light-matter coupling is shown to lead to almost total absorption at two distinct frequencies.
authors.affiliation: School of Physics, University of Hyderabad, Hyderabad, India. sdgsp@uohyd.ernet.in
authors.forename: S Dutta
authors.initials: SD
authors.lastname: Gupta