Enhanced optical transmission at the cutoff transition.
Opt Express
; 17(9): 6920-30, 2009 Apr 27.
Article
en En
| MEDLINE
| ID: mdl-19399064
The phenomenon of extraordinary transmission in the optical regime for circular hole arrays in optically thick metal films is studied as a function of hole size and depth. In the limit of small holes compared to the depth, the transmission properties follow a waveguide type behavior. By describing the transmission process as resulting from the interference between a resonant and a non-resonant contribution, a transition is clearly revealed through the specific spectral variations of the resonance at a given hole depth. This transition is associated to a change in the attenuation through the hole as its size increases, and corresponds to the optimal condition for surface plasmon excitation.
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Base de datos:
MEDLINE
Asunto principal:
Refractometría
/
Resonancia por Plasmón de Superficie
/
Modelos Teóricos
Idioma:
En
Revista:
Opt Express
Asunto de la revista:
OFTALMOLOGIA
Año:
2009
Tipo del documento:
Article