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

Ricardo A. Depine; Akhlesh Lakhtakia; David R. Smith

doi:10.1016/j.physleta.2005.01.028

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

Ricardo A. Depine
, Akhlesh Lakhtakia
, David R. Smith

Engineering Science and Mechanics

Research output: Contribution to journal › Article › peer-review

16 Scopus citations

Abstract

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.

Original language	English (US)
Pages (from-to)	155-160
Number of pages	6
Journal	Physics Letters, Section A: General, Atomic and Solid State Physics
Volume	337
Issue number	1-2
DOIs	https://doi.org/10.1016/j.physleta.2005.01.028
State	Published - Mar 28 2005

All Science Journal Classification (ASJC) codes

General Physics and Astronomy

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10.1016/j.physleta.2005.01.028

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@article{358d946781ba4dd3924d4a228a9393ae,

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

abstract = "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.",

author = "Depine, \{Ricardo A.\} and Akhlesh Lakhtakia and Smith, \{David R.\}",

note = "Funding Information: R.A.D. acknowledges partial support from CONICET (Grant: ANPCYT-BID 802/OC-AR03-04457), and A.L. from the Mercedes Foundation.",

year = "2005",

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doi = "10.1016/j.physleta.2005.01.028",

language = "English (US)",

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journal = "Physics Letters, Section A: General, Atomic and Solid State Physics",

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publisher = "Elsevier B.V.",

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T1 - Enhanced diffraction by a rectangular grating made of a negative phase-velocity (or negative index) material

AU - Depine, Ricardo A.

AU - Lakhtakia, Akhlesh

AU - Smith, David R.

N1 - Funding Information: R.A.D. acknowledges partial support from CONICET (Grant: ANPCYT-BID 802/OC-AR03-04457), and A.L. from the Mercedes Foundation.

PY - 2005/3/28

Y1 - 2005/3/28

N2 - 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.

AB - 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.

UR - https://www.scopus.com/pages/publications/14644403617

UR - https://www.scopus.com/pages/publications/14644403617#tab=citedBy

U2 - 10.1016/j.physleta.2005.01.028

DO - 10.1016/j.physleta.2005.01.028

M3 - Article

AN - SCOPUS:14644403617

SN - 0375-9601

VL - 337

SP - 155

EP - 160

JO - Physics Letters, Section A: General, Atomic and Solid State Physics

JF - Physics Letters, Section A: General, Atomic and Solid State Physics

IS - 1-2

ER -

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

Abstract

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