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Gain-assisted extraordinary optical transmission through periodic arrays of subwavelength apertures

AuthorsMarani, R.; Rodrigo, Sergio G.; Martín-Moreno, Luis; García-Vidal, F. J.; Bravo-Abad, Jorge
Issue Date2012
PublisherInstitute of Physics Publishing
CitationNew Journal of Physics 14: 013020 (2012)
AbstractWe theoretically investigate the amplification of extraordinary optical transmission (EOT) phenomena in periodic arrays of subwavelength apertures incorporating gain media. In particular, we consider a realistic structure consisting of an opaque silver film perforated by a periodic array of slits and clad on each side by an optically pumped dielectric thin film containing rhodamine dye molecules. By solving the semiclassical electronic rate equations coupled to rigorous finite-element simulations of the electromagnetic fields, we show how the resonant electric-field enhancement associated with EOT properties enables complete ohmic loss compensation at moderate pump intensity levels. Furthermore, our calculations show that, as a consequence of the strong spatial hole-burning effects displayed by the considered structures, three separate regimes of operation arise: the system can behave as an absorber, an optical amplifier or a laser, depending on the value of the pump intensity. A discussion on the feasibility of reaching the lasing regime in the considered class of structures is also presented. © IOP Publishing Ltd and Deutsche Physikalische Gesellschaft.
Descriptionet al.
Publisher version (URL)http://dx.doi.org/10.1088/1367-2630/14/1/013020
Identifiersdoi: 10.1088/1367-2630/14/1/013020
issn: 1367-2630
Appears in Collections:(ICMA) Artículos
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