Enhanced diffraction by a rectangular grating made of a negative phase-velocity (or negative index) material

The diffraction of electromagnetic plane waves by a rectangular grating formed by discrete steps in the interface of a homogeneous, isotropic, linear, negative phase-velocity (negative index) material with free space is studied using the semi-analytic C method. When a nonspecular diffracted order is...

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Detalles Bibliográficos
Autores principales: Depine, R.A., Lakhtakia, A., Smith, D.R.
Formato: JOUR
Materias:
Diffraction
Grating
Negative phase velocity
Negative refractive index
article
diffraction
electromagnetic field
grating
magnetism
material state
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_03759601_v337_n1-2_p155_Depine
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_03759601_v337_n1-2_p155_Depine
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spelling todo:paper_03759601_v337_n1-2_p155_Depine2023-10-03T15:31:06Z Enhanced diffraction by a rectangular grating made of a negative phase-velocity (or negative index) material Depine, R.A. Lakhtakia, A. Smith, D.R. Diffraction Grating Negative phase velocity Negative refractive index article diffraction electromagnetic field grating magnetism material state The diffraction of electromagnetic plane waves by a rectangular grating formed by discrete steps in the interface of a homogeneous, isotropic, linear, negative phase-velocity (negative index) material with free space is studied using the semi-analytic C method. When a nonspecular diffracted order is of the propagating type, coupling to that order is significantly larger for a negative index material than for a conventional material. The computed coupling strengths reported here are in agreement with recent experiments, and illustrate the role of evanescent fields localized at the grating interface in producing this enhanced coupling. © 2005 Published by Elsevier B.V. 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_03759601_v337_n1-2_p155_Depine
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Diffraction
Grating
Negative phase velocity
Negative refractive index
article
diffraction
electromagnetic field
grating
magnetism
material state
spellingShingle Diffraction
Grating
Negative phase velocity
Negative refractive index
article
diffraction
electromagnetic field
grating
magnetism
material state
Depine, R.A.
Lakhtakia, A.
Smith, D.R.
Enhanced diffraction by a rectangular grating made of a negative phase-velocity (or negative index) material
topic_facet Diffraction
Grating
Negative phase velocity
Negative refractive index
article
diffraction
electromagnetic field
grating
magnetism
material state
description The diffraction of electromagnetic plane waves by a rectangular grating formed by discrete steps in the interface of a homogeneous, isotropic, linear, negative phase-velocity (negative index) material with free space is studied using the semi-analytic C method. When a nonspecular diffracted order is of the propagating type, coupling to that order is significantly larger for a negative index material than for a conventional material. The computed coupling strengths reported here are in agreement with recent experiments, and illustrate the role of evanescent fields localized at the grating interface in producing this enhanced coupling. © 2005 Published by Elsevier B.V.
format JOUR
author Depine, R.A.
Lakhtakia, A.
Smith, D.R.
author_facet Depine, R.A.
Lakhtakia, A.
Smith, D.R.
author_sort Depine, R.A.
title Enhanced diffraction by a rectangular grating made of a negative phase-velocity (or negative index) material
title_short Enhanced diffraction by a rectangular grating made of a negative phase-velocity (or negative index) material
title_full Enhanced diffraction by a rectangular grating made of a negative phase-velocity (or negative index) material
title_fullStr Enhanced diffraction by a rectangular grating made of a negative phase-velocity (or negative index) material
title_full_unstemmed Enhanced diffraction by a rectangular grating made of a negative phase-velocity (or negative index) material
title_sort enhanced diffraction by a rectangular grating made of a negative phase-velocity (or negative index) material
url http://hdl.handle.net/20.500.12110/paper_03759601_v337_n1-2_p155_Depine
work_keys_str_mv AT depinera enhanceddiffractionbyarectangulargratingmadeofanegativephasevelocityornegativeindexmaterial
AT lakhtakiaa enhanceddiffractionbyarectangulargratingmadeofanegativephasevelocityornegativeindexmaterial
AT smithdr enhanceddiffractionbyarectangulargratingmadeofanegativephasevelocityornegativeindexmaterial
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