Artículo
Striking properties of light transmitted by a double period nanoslit structure under evanescent incidence
Fecha de publicación:
04/2015
Editorial:
IOP Publishing
Revista:
Journal of Optics
ISSN:
2040-8978
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
The excitation of phase resonances in dual-period wire structures under evanescent incidence is investigated and numerically reported for the first time. The diffraction problem of a compound structure comprising subwavelength perfectly conducting wires and slits near a dielectric interface is solved by the modal method, which has been extended to consider evanescent incidence via illumination under the total internal reflection condition. We demonstrate evanescent-to-propagating conversion in the transmitted intensity via resonances of different types, such as Fabry?Perot and Rayleigh anomalies. The results exhibit points in common with those obtained for simple structures (single wire/slit per period), but, on the other hand, there are striking differences, mainly arising from the excitation of phase resonances in the structure. These features allow an angular and spectral control of the transmitted response, which opens up new degrees of freedom for the design of input/output couplers and other devices.
Palabras clave:
Enhanced Transmission
,
Subwavelength Slits
,
Dual-Period Structures
Archivos asociados
Licencia
Identificadores
Colecciones
Articulos(IFIBA)
Articulos de INST.DE FISICA DE BUENOS AIRES
Articulos de INST.DE FISICA DE BUENOS AIRES
Citación
Lester, Marcelo Fabian; Skigin, Diana Carina; Striking properties of light transmitted by a double period nanoslit structure under evanescent incidence; IOP Publishing; Journal of Optics; 17; 5; 4-2015; 55601-55610
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