The coupling of microwave radiation to surface plasmon polaritons and guided modes via dielectric gratings

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The coupling of microwave radiation to surface plasmon polaritons and guided modes via dielectric gratings

Please use this identifier to cite or link to this item: http://hdl.handle.net/10036/24033

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Title: The coupling of microwave radiation to surface plasmon polaritons and guided modes via dielectric gratings
Author: Hibbins, Alastair P.
Sambles, J. Roy
Lawrence, Christopher R.
Citation: 87 (6), pp. 2677-2683
Publisher: American Institute of Physics
Journal: Journal of Applied Physics
Date Issued: 2000
URI: http://hdl.handle.net/10036/24033
DOI: 10.1063/1.372241
Links: http://dx.doi.org/10.1063/1.372241 http://link.aip.org/link/?JAPIAU/87/2677/1
Abstract: It is shown that an absorbing dielectric layer, sinusoidally modulated in height, on top of a planar metal substrate, may be used to provide coupling between both s- and p-polarized incident microwave photons and surface plasmon polaritons, which propagate along the metal–dielectric interface. The study is carried out using paraffin wax as the dielectric material on an aluminum-alloy plate and the wax is sufficiently thick such that it may also support a guided mode. Energy reradiated from these excited modes into diffracted orders is recorded by monitoring the specular beam reflectivity as a function of wavelength (7.5<λ0<11.3 mm) and azimuthal angle of incidence (0°<φ<90°). The azimuthal-angle-dependent reflectivity scans are fitted using a multilayer, multishape differential formalism to model conical diffraction with a single set of parameters describing the grating profile, and the permittivity and thickness of the wax layer.
Type: Article
Description: Copyright © 2000 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Journal of Applied Physics 87 (2000) and may be found at http://link.aip.org/link/?JAPIAU/87/2677/1
Keywords: polaritonssurface plasmonselectromagnetic wave polarisationmetal-insulator boundariesreflectivitydiffraction gratingsmicrowave propagation
ISSN: 0021-8979


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