Excitation of eigenmodes at uniaxial crystal-metal-isotropic films

We perform a theoretical study about the interaction between light and the eigenmodes of a metallic film that separates a uniaxial crystal from an isotropic medium. These structures support two different eigenmodes: a surface mode at the isotropic medium-metal interface and another mode at the cryst...

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Detalles Bibliográficos
Publicado: 1998
Materias:
Eigenvalues and eigenfunctions
Interfaces (materials)
Metallic films
Excitation of eigenmodes
Light propagation
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09500340_v45_n11_p2281_Gigli
http://hdl.handle.net/20.500.12110/paper_09500340_v45_n11_p2281_Gigli
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_09500340_v45_n11_p2281_Gigli
record_format dspace
spelling paper:paper_09500340_v45_n11_p2281_Gigli2023-06-08T15:54:16Z Excitation of eigenmodes at uniaxial crystal-metal-isotropic films Eigenvalues and eigenfunctions Interfaces (materials) Metallic films Excitation of eigenmodes Light propagation We perform a theoretical study about the interaction between light and the eigenmodes of a metallic film that separates a uniaxial crystal from an isotropic medium. These structures support two different eigenmodes: a surface mode at the isotropic medium-metal interface and another mode at the crystal-metal interface. We show that, contrary to what happens in isotropic configurations, these two modes can couple to incident radiation without corrugating the surface or adding another interface. We give conditions to obtain zero reflected power and a strong enhancement of the fields at both interfaces. We also show that, owing to the different characteristics of the modes supported by each interface, the relative position of their propagation constants in the complex plane can be selected rather arbitrarily by tuning the film parameters. We give examples in which both couplings occur for angles of incidence either very different (separate resonances) or very close (almost double resonances). In the latter case we observe the phenomenon of “reluctance” between resonances. © 1998 Taylor & Francis Group, LLC. 1998 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09500340_v45_n11_p2281_Gigli http://hdl.handle.net/20.500.12110/paper_09500340_v45_n11_p2281_Gigli
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Eigenvalues and eigenfunctions
Interfaces (materials)
Metallic films
Excitation of eigenmodes
Light propagation
spellingShingle Eigenvalues and eigenfunctions
Interfaces (materials)
Metallic films
Excitation of eigenmodes
Light propagation
Excitation of eigenmodes at uniaxial crystal-metal-isotropic films
topic_facet Eigenvalues and eigenfunctions
Interfaces (materials)
Metallic films
Excitation of eigenmodes
Light propagation
description We perform a theoretical study about the interaction between light and the eigenmodes of a metallic film that separates a uniaxial crystal from an isotropic medium. These structures support two different eigenmodes: a surface mode at the isotropic medium-metal interface and another mode at the crystal-metal interface. We show that, contrary to what happens in isotropic configurations, these two modes can couple to incident radiation without corrugating the surface or adding another interface. We give conditions to obtain zero reflected power and a strong enhancement of the fields at both interfaces. We also show that, owing to the different characteristics of the modes supported by each interface, the relative position of their propagation constants in the complex plane can be selected rather arbitrarily by tuning the film parameters. We give examples in which both couplings occur for angles of incidence either very different (separate resonances) or very close (almost double resonances). In the latter case we observe the phenomenon of “reluctance” between resonances. © 1998 Taylor & Francis Group, LLC.
title Excitation of eigenmodes at uniaxial crystal-metal-isotropic films
title_short Excitation of eigenmodes at uniaxial crystal-metal-isotropic films
title_full Excitation of eigenmodes at uniaxial crystal-metal-isotropic films
title_fullStr Excitation of eigenmodes at uniaxial crystal-metal-isotropic films
title_full_unstemmed Excitation of eigenmodes at uniaxial crystal-metal-isotropic films
title_sort excitation of eigenmodes at uniaxial crystal-metal-isotropic films
publishDate 1998
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09500340_v45_n11_p2281_Gigli
http://hdl.handle.net/20.500.12110/paper_09500340_v45_n11_p2281_Gigli
_version_ 1768545381485903872

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