Excitation of surface plasmon polaritons along the sinusoidal boundary of a metamaterial

We present a detailed analysis about the excitation of surface polaritons (SPs) at the sinusoidally corrugated interface between a conventional dielectric medium and a metamaterial (MM) with arbitrary values of dielectric permittivity and magnetic permeability. The strong impact of SPs on the optica...

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Autores principales: Cuevas, M., Depine, R.A.
Formato: JOUR
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_10980121_v78_n12_p_Cuevas
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling todo:paper_10980121_v78_n12_p_Cuevas2023-10-03T16:06:09Z Excitation of surface plasmon polaritons along the sinusoidal boundary of a metamaterial Cuevas, M. Depine, R.A. We present a detailed analysis about the excitation of surface polaritons (SPs) at the sinusoidally corrugated interface between a conventional dielectric medium and a metamaterial (MM) with arbitrary values of dielectric permittivity and magnetic permeability. The strong impact of SPs on the optical response of the interface is demonstrated by numerical examples obtained with a rigorous electromagnetic code. Conditions leading to total absorption of the incident power and to near-field enhancements are explored in new SP regimes provided by the emergence of MMs. In those regimes where waves incident on the surface without corrugation suffer reactive attenuation, we find SP effects very similar to those occurring for metallic gratings, where the introduction of a weak corrugation in an otherwise highly reflecting surface can turn its reflectivity to zero. New SP effects are identified in regimes corresponding to ideally transparent MMs with a negative index of refraction. In these regimes, contrary to the case of metallic gratings, the introduction of a weak corrugation in an otherwise poorly reflecting surface produces high reflectivities in angular regions corresponding to SP excitation. Moreover, maximal absorption of incident waves and maximal intensity of the excited SP do not occur under the same conditions in these regimes. The complex propagation constants of the SPs supported by the corrugated interface are approximately obtained by fitting a phenomenological expression to our numerical results. © 2008 The American Physical Society. Fil:Cuevas, M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Depine, R.A. 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_10980121_v78_n12_p_Cuevas
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
description We present a detailed analysis about the excitation of surface polaritons (SPs) at the sinusoidally corrugated interface between a conventional dielectric medium and a metamaterial (MM) with arbitrary values of dielectric permittivity and magnetic permeability. The strong impact of SPs on the optical response of the interface is demonstrated by numerical examples obtained with a rigorous electromagnetic code. Conditions leading to total absorption of the incident power and to near-field enhancements are explored in new SP regimes provided by the emergence of MMs. In those regimes where waves incident on the surface without corrugation suffer reactive attenuation, we find SP effects very similar to those occurring for metallic gratings, where the introduction of a weak corrugation in an otherwise highly reflecting surface can turn its reflectivity to zero. New SP effects are identified in regimes corresponding to ideally transparent MMs with a negative index of refraction. In these regimes, contrary to the case of metallic gratings, the introduction of a weak corrugation in an otherwise poorly reflecting surface produces high reflectivities in angular regions corresponding to SP excitation. Moreover, maximal absorption of incident waves and maximal intensity of the excited SP do not occur under the same conditions in these regimes. The complex propagation constants of the SPs supported by the corrugated interface are approximately obtained by fitting a phenomenological expression to our numerical results. © 2008 The American Physical Society.
format JOUR
author Cuevas, M.
Depine, R.A.
spellingShingle Cuevas, M.
Depine, R.A.
Excitation of surface plasmon polaritons along the sinusoidal boundary of a metamaterial
author_facet Cuevas, M.
Depine, R.A.
author_sort Cuevas, M.
title Excitation of surface plasmon polaritons along the sinusoidal boundary of a metamaterial
title_short Excitation of surface plasmon polaritons along the sinusoidal boundary of a metamaterial
title_full Excitation of surface plasmon polaritons along the sinusoidal boundary of a metamaterial
title_fullStr Excitation of surface plasmon polaritons along the sinusoidal boundary of a metamaterial
title_full_unstemmed Excitation of surface plasmon polaritons along the sinusoidal boundary of a metamaterial
title_sort excitation of surface plasmon polaritons along the sinusoidal boundary of a metamaterial
url http://hdl.handle.net/20.500.12110/paper_10980121_v78_n12_p_Cuevas
work_keys_str_mv AT cuevasm excitationofsurfaceplasmonpolaritonsalongthesinusoidalboundaryofametamaterial
AT depinera excitationofsurfaceplasmonpolaritonsalongthesinusoidalboundaryofametamaterial
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