Gain-assisted extraordinary optical transmission through periodic arrays of subwavelength apertures
Entidad
UAM. Departamento de Física Teórica de la Materia CondensadaEditor
Institute of Physics Publishing (IOP)Fecha de edición
2012-01-13Cita
10.1088/1367-2630/14/1/013020
New Journal of Physics 14 (2012): 013020
ISSN
1367-2630 (print)DOI
10.1088/1367-2630/14/1/013020Financiado por
This work was sponsored by the Spanish Ministry of Science and Innovation under the projects MAT2009-06609-C02 and CSD2007-046-NanoLight and by the Ramón y Cajal program (grant no. RyC-2009-05489)Versión del editor
http://dx.doi.org/10.1088/1367-2630/14/1/013020Materias
FísicaDerechos
© IOP Publishing Ltd and Deutsche Physikalische GesellschaftResumen
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
Lista de ficheros
Google Scholar:Marani, Roberto
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D'Orazio, Antonella
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Petruzzelli, Vincenzo
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Rodrigo, Sergio G.
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Martín-Moreno, Luis
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García Vidal, Fco. José
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Bravo Abad, Jorge
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