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

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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, Mauro, Depine, Ricardo Angel
Publicado: 2008
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10980121_v78_n12_p_Cuevas
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
id paper:paper_10980121_v78_n12_p_Cuevas
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spelling paper:paper_10980121_v78_n12_p_Cuevas2023-06-08T16:07:41Z Excitation of surface plasmon polaritons along the sinusoidal boundary of a metamaterial Cuevas, Mauro Depine, Ricardo Angel 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. 2008 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10980121_v78_n12_p_Cuevas 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.
author Cuevas, Mauro
Depine, Ricardo Angel
spellingShingle Cuevas, Mauro
Depine, Ricardo Angel
Excitation of surface plasmon polaritons along the sinusoidal boundary of a metamaterial
author_facet Cuevas, Mauro
Depine, Ricardo Angel
author_sort Cuevas, Mauro
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
publishDate 2008
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10980121_v78_n12_p_Cuevas
http://hdl.handle.net/20.500.12110/paper_10980121_v78_n12_p_Cuevas
work_keys_str_mv AT cuevasmauro excitationofsurfaceplasmonpolaritonsalongthesinusoidalboundaryofametamaterial
AT depinericardoangel excitationofsurfaceplasmonpolaritonsalongthesinusoidalboundaryofametamaterial
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