Study of resonant modes of a periodic metallic array near a dielectric interface: Evanescent-to-propagating coupling via surface plasmon excitation

The structural modes of a 2D periodic array of metallic cylinders near a dielectric interface are studied, for large and small wavelength-to-period ratios. We show that there are two clearly distinguished kinds of resonances: waveguide modes of the gap between the array and the interface, and eigenm...

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Detalles Bibliográficos
Autores principales: Skigin, D.C., Lester, M.
Formato: JOUR
Materias:
Anomaly
Enhanced transmission
Grating-waveguide structures
Resonances
Surface plasmons
Grating waveguide structures
Couplings
Dielectric materials
Diffraction gratings
Metallic compounds
Optical waveguides
Acoustic arrays
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_14644258_v8_n3_p259_Skigin
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_14644258_v8_n3_p259_Skigin
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spelling todo:paper_14644258_v8_n3_p259_Skigin2023-10-03T16:17:14Z Study of resonant modes of a periodic metallic array near a dielectric interface: Evanescent-to-propagating coupling via surface plasmon excitation Skigin, D.C. Lester, M. Anomaly Enhanced transmission Grating-waveguide structures Resonances Surface plasmons Enhanced transmission Grating waveguide structures Surface plasmons Couplings Dielectric materials Diffraction gratings Metallic compounds Optical waveguides Acoustic arrays The structural modes of a 2D periodic array of metallic cylinders near a dielectric interface are studied, for large and small wavelength-to-period ratios. We show that there are two clearly distinguished kinds of resonances: waveguide modes of the gap between the array and the interface, and eigenmode excitations (plasmons). While waveguide modes are present for both polarizations, surface plasmon polaritons (SPPs) only occur for p polarization, and, under particular conditions, this mechanism can produce an efficient coupling (about 60%) between the incident evanescent wave and the eigenmodes supported by the structure, which produces an enhanced transmitted propagating order. The response of the structure is analysed in detail by varying its relevant parameters, paying particular attention to the interplay between SPPs and Rayleigh anomalies, and its effect on the grating response. © 2006 IOP Publishing Ltd. Fil:Skigin, D.C. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Lester, M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_14644258_v8_n3_p259_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 Anomaly
Enhanced transmission
Grating-waveguide structures
Resonances
Surface plasmons
Enhanced transmission
Grating waveguide structures
Surface plasmons
Couplings
Dielectric materials
Diffraction gratings
Metallic compounds
Optical waveguides
Acoustic arrays
spellingShingle Anomaly
Enhanced transmission
Grating-waveguide structures
Resonances
Surface plasmons
Enhanced transmission
Grating waveguide structures
Surface plasmons
Couplings
Dielectric materials
Diffraction gratings
Metallic compounds
Optical waveguides
Acoustic arrays
Skigin, D.C.
Lester, M.
Study of resonant modes of a periodic metallic array near a dielectric interface: Evanescent-to-propagating coupling via surface plasmon excitation
topic_facet Anomaly
Enhanced transmission
Grating-waveguide structures
Resonances
Surface plasmons
Enhanced transmission
Grating waveguide structures
Surface plasmons
Couplings
Dielectric materials
Diffraction gratings
Metallic compounds
Optical waveguides
Acoustic arrays
description The structural modes of a 2D periodic array of metallic cylinders near a dielectric interface are studied, for large and small wavelength-to-period ratios. We show that there are two clearly distinguished kinds of resonances: waveguide modes of the gap between the array and the interface, and eigenmode excitations (plasmons). While waveguide modes are present for both polarizations, surface plasmon polaritons (SPPs) only occur for p polarization, and, under particular conditions, this mechanism can produce an efficient coupling (about 60%) between the incident evanescent wave and the eigenmodes supported by the structure, which produces an enhanced transmitted propagating order. The response of the structure is analysed in detail by varying its relevant parameters, paying particular attention to the interplay between SPPs and Rayleigh anomalies, and its effect on the grating response. © 2006 IOP Publishing Ltd.
format JOUR
author Skigin, D.C.
Lester, M.
author_facet Skigin, D.C.
Lester, M.
author_sort Skigin, D.C.
title Study of resonant modes of a periodic metallic array near a dielectric interface: Evanescent-to-propagating coupling via surface plasmon excitation
title_short Study of resonant modes of a periodic metallic array near a dielectric interface: Evanescent-to-propagating coupling via surface plasmon excitation
title_full Study of resonant modes of a periodic metallic array near a dielectric interface: Evanescent-to-propagating coupling via surface plasmon excitation
title_fullStr Study of resonant modes of a periodic metallic array near a dielectric interface: Evanescent-to-propagating coupling via surface plasmon excitation
title_full_unstemmed Study of resonant modes of a periodic metallic array near a dielectric interface: Evanescent-to-propagating coupling via surface plasmon excitation
title_sort study of resonant modes of a periodic metallic array near a dielectric interface: evanescent-to-propagating coupling via surface plasmon excitation
url http://hdl.handle.net/20.500.12110/paper_14644258_v8_n3_p259_Skigin
work_keys_str_mv AT skigindc studyofresonantmodesofaperiodicmetallicarraynearadielectricinterfaceevanescenttopropagatingcouplingviasurfaceplasmonexcitation
AT lesterm studyofresonantmodesofaperiodicmetallicarraynearadielectricinterfaceevanescenttopropagatingcouplingviasurfaceplasmonexcitation
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