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Abstract:

In this paper we show that enhanced optical transmission through a 1D periodic slit array comprising real metallic cylinders is possible for s-polarization when the array is near a dielectric interface. We investigate the behaviour of this structure under s-polarized illumination, in which case surface plasmons are not excited. Numerical results show that the transmitted intensity appears as a periodic function of the slit depth, for propagating as well as for evanescent incidence, suggesting that this behaviour is related to the excitation of waveguide modes in the slits. In particular, the coupling of evanescent to propagating electromagnetic waves is investigated. It is shown that s-polarized evanescent waves generated at the interface can be transformed into propagating waves if the optical width of the slits allows propagation of the first waveguide mode. As the interface approaches the array, the transmitted intensity increases for evanescent incidence. © IOP Publishing Ltd.

Registro:

Documento: Artículo
Título:Coupling of evanescent s-polarized waves to the far field by waveguide modes in metallic arrays
Autor:Lester, M.; Skigin, D.C.
Filiación:Instituto de Física Arroyo Seco, Facultad de Ciencias Exactas, Centro de la Provincia de Buenos Aires, Pinto 399 (cp 7000), Buenos Aires, Argentina
Grupo de Electromagnetismo Aplicado, Departamento de Física, Pabellón I, C1428EHA Buenos Aires, Argentina
Consejo Nacional de Investigaciones Científicas y Técnicas CONICET, Argentina
Palabras clave:Anomaly; Enhanced transmission; Grating-waveguide structures; Resonances; Enhanced transmission; Grating waveguide structures; Electromagnetic wave propagation; Interfaces (materials); Numerical methods; Optical waveguides; Resonance; Light polarization
Año:2007
Volumen:9
Número:1
Página de inicio:81
Página de fin:87
DOI: http://dx.doi.org/10.1088/1464-4258/9/1/014
Título revista:Journal of Optics A: Pure and Applied Optics
Título revista abreviado:J Opt A Pure Appl Opt
ISSN:14644258
CODEN:JOAOF
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_14644258_v9_n1_p81_Lester

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Citas:

---------- APA ----------
Lester, M. & Skigin, D.C. (2007) . Coupling of evanescent s-polarized waves to the far field by waveguide modes in metallic arrays. Journal of Optics A: Pure and Applied Optics, 9(1), 81-87.
http://dx.doi.org/10.1088/1464-4258/9/1/014
---------- CHICAGO ----------
Lester, M., Skigin, D.C. "Coupling of evanescent s-polarized waves to the far field by waveguide modes in metallic arrays" . Journal of Optics A: Pure and Applied Optics 9, no. 1 (2007) : 81-87.
http://dx.doi.org/10.1088/1464-4258/9/1/014
---------- MLA ----------
Lester, M., Skigin, D.C. "Coupling of evanescent s-polarized waves to the far field by waveguide modes in metallic arrays" . Journal of Optics A: Pure and Applied Optics, vol. 9, no. 1, 2007, pp. 81-87.
http://dx.doi.org/10.1088/1464-4258/9/1/014
---------- VANCOUVER ----------
Lester, M., Skigin, D.C. Coupling of evanescent s-polarized waves to the far field by waveguide modes in metallic arrays. J Opt A Pure Appl Opt. 2007;9(1):81-87.
http://dx.doi.org/10.1088/1464-4258/9/1/014