Enhanced transmission via evanescent-to-propagating conversion in metallic nanoslits: Role of Rayleigh anomalies

We analyze the enhanced transmission phenomenon in subwavelength slit structures near a dielectric interface. In particular, we investigate the influence of Rayleigh anomalies in the spectral position as well as in the bandwidth of Fabry-Perot resonances excited on such structures. We consider the c...

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Detalles Bibliográficos
Autores principales:	Skigin, D.C., Lester, M.
Formato:	JOUR
Materias:	enhanced transmission nanostructures subwavelength sli Electromagnetism Nanostructures Resonance Dielectric interface Electromagnetic modeling Electromagnetic response Enhanced transmission Fabry-Perot resonances Metallic structures Sub-wavelength Subwavelength slits Fabry-Perot interferometers
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_20408978_v16_n4_p_Skigin
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	todo:paper_20408978_v16_n4_p_Skigin
record_format	dspace
spelling	todo:paper_20408978_v16_n4_p_Skigin2023-10-03T16:37:48Z Enhanced transmission via evanescent-to-propagating conversion in metallic nanoslits: Role of Rayleigh anomalies Skigin, D.C. Lester, M. enhanced transmission nanostructures subwavelength sli Electromagnetism Nanostructures Resonance Dielectric interface Electromagnetic modeling Electromagnetic response Enhanced transmission Fabry-Perot resonances Metallic structures Sub-wavelength Subwavelength slits Fabry-Perot interferometers We analyze the enhanced transmission phenomenon in subwavelength slit structures near a dielectric interface. In particular, we investigate the influence of Rayleigh anomalies in the spectral position as well as in the bandwidth of Fabry-Perot resonances excited on such structures. We consider the cases of propagating and evanescent incidence, i.e., when the metallic structure is illuminated from the dielectric medium side with an incidence angle larger than the critical angle. We show that Rayleigh anomalies strongly interact with Fabry-Perot resonances, and make them deviate from the spectral positions predicted by the infinitely thin slit model. To get physical insight into this problem, we develop a simplified electromagnetic model and show that there is a close correspondence between the transmitted response of the structure and the behavior of certain function that depends on the geometrical and the illumination parameters. Our results suggest that Rayleigh anomalies strongly modify the electromagnetic response of the structure due to the existence of surface waves that modify the coupling condition between the fields inside and outside the slits. Besides, we show that even in absence of Fabry-Perot resonances, it is possible to produce enhanced transmission by taking advantage of the pseudoperiodicity condition of the fields. © 2014 IOP Publishing Ltd. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_20408978_v16_n4_p_Skigin
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	enhanced transmission nanostructures subwavelength sli Electromagnetism Nanostructures Resonance Dielectric interface Electromagnetic modeling Electromagnetic response Enhanced transmission Fabry-Perot resonances Metallic structures Sub-wavelength Subwavelength slits Fabry-Perot interferometers
spellingShingle	enhanced transmission nanostructures subwavelength sli Electromagnetism Nanostructures Resonance Dielectric interface Electromagnetic modeling Electromagnetic response Enhanced transmission Fabry-Perot resonances Metallic structures Sub-wavelength Subwavelength slits Fabry-Perot interferometers Skigin, D.C. Lester, M. Enhanced transmission via evanescent-to-propagating conversion in metallic nanoslits: Role of Rayleigh anomalies
topic_facet	enhanced transmission nanostructures subwavelength sli Electromagnetism Nanostructures Resonance Dielectric interface Electromagnetic modeling Electromagnetic response Enhanced transmission Fabry-Perot resonances Metallic structures Sub-wavelength Subwavelength slits Fabry-Perot interferometers
description	We analyze the enhanced transmission phenomenon in subwavelength slit structures near a dielectric interface. In particular, we investigate the influence of Rayleigh anomalies in the spectral position as well as in the bandwidth of Fabry-Perot resonances excited on such structures. We consider the cases of propagating and evanescent incidence, i.e., when the metallic structure is illuminated from the dielectric medium side with an incidence angle larger than the critical angle. We show that Rayleigh anomalies strongly interact with Fabry-Perot resonances, and make them deviate from the spectral positions predicted by the infinitely thin slit model. To get physical insight into this problem, we develop a simplified electromagnetic model and show that there is a close correspondence between the transmitted response of the structure and the behavior of certain function that depends on the geometrical and the illumination parameters. Our results suggest that Rayleigh anomalies strongly modify the electromagnetic response of the structure due to the existence of surface waves that modify the coupling condition between the fields inside and outside the slits. Besides, we show that even in absence of Fabry-Perot resonances, it is possible to produce enhanced transmission by taking advantage of the pseudoperiodicity condition of the fields. © 2014 IOP Publishing Ltd.
format	JOUR
author	Skigin, D.C. Lester, M.
author_facet	Skigin, D.C. Lester, M.
author_sort	Skigin, D.C.
title	Enhanced transmission via evanescent-to-propagating conversion in metallic nanoslits: Role of Rayleigh anomalies
title_short	Enhanced transmission via evanescent-to-propagating conversion in metallic nanoslits: Role of Rayleigh anomalies
title_full	Enhanced transmission via evanescent-to-propagating conversion in metallic nanoslits: Role of Rayleigh anomalies
title_fullStr	Enhanced transmission via evanescent-to-propagating conversion in metallic nanoslits: Role of Rayleigh anomalies
title_full_unstemmed	Enhanced transmission via evanescent-to-propagating conversion in metallic nanoslits: Role of Rayleigh anomalies
title_sort	enhanced transmission via evanescent-to-propagating conversion in metallic nanoslits: role of rayleigh anomalies
url	http://hdl.handle.net/20.500.12110/paper_20408978_v16_n4_p_Skigin
work_keys_str_mv	AT skigindc enhancedtransmissionviaevanescenttopropagatingconversioninmetallicnanoslitsroleofrayleighanomalies AT lesterm enhancedtransmissionviaevanescenttopropagatingconversioninmetallicnanoslitsroleofrayleighanomalies
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Enhanced transmission via evanescent-to-propagating conversion in metallic nanoslits: Role of Rayleigh anomalies

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