dorsal/arxiv
View SchemaEnhanced diffraction by a rectangular grating made of a negative phase--velocity (or negative index) material
| Authors | Ricardo A. Depine, Akhlesh Lakhtakia, David R. Smith |
|---|---|
| Categories | |
| ArXiv ID | physics/0501001 |
| URL | https://arxiv.org/abs/physics/0501001 |
| DOI | 10.1016/j.physleta.2005.01.028 |
| Journal | Physics Letters A 337, 155-160 (2005) |
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 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.
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"abstract": "The diffraction of electromagnetic plane waves by a rectangular grating\nformed by discrete steps in the interface of a homogeneous, isotropic, linear,\nnegative phase--velocity (negative index) material with free space is studied\nusing the semi--analytic C method. When a nonspecular diffracted order is of\nthe propagating type, coupling to that order is significantly larger for a\nnegative index material than for conventional material. The computed coupling\nstrengths reported here are in agreement with recent experiments, and\nillustrate the role of evanescent fields localized at the grating interface in\nproducing this enhanced coupling.",
"arxiv_id": "physics/0501001",
"authors": [
"Ricardo A. Depine",
"Akhlesh Lakhtakia",
"David R. Smith"
],
"categories": [
"physics.optics",
"physics.comp-ph"
],
"doi": "10.1016/j.physleta.2005.01.028",
"journal_ref": "Physics Letters A 337, 155-160 (2005)",
"title": "Enhanced diffraction by a rectangular grating made of a negative phase--velocity (or negative index) material",
"url": "https://arxiv.org/abs/physics/0501001"
},
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