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

Authors:Marani, R.
Rodrigo, Sergio G.
Martín-Moreno, Luis
García-Vidal, Francisco J.
Bravo-Abad, Jorge
Issue Date:2012
Publisher:Institute of Physics Publishing
Citation:New Journal of Physics 14: 013020 (2012)
Abstract:We 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.
Description:et al.
Publisher version (URL):http://dx.doi.org/10.1088/1367-2630/14/1/013020
URI:http://hdl.handle.net/10261/52759
Identifiers:doi: 10.1088/1367-2630/14/1/013020
issn: 1367-2630
Appears in Collections:(ICMA) Artículos

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