Resonant absorption of electromagnetic fields by surface plasmons buried in a multilayered plasmonic nanostructure
Hibbins, Alastair P.; Murray, W. Andrew; Tyler, J.; et al.Wedge, S.; Barnes, William L.; Sambles, J. Roy
Date: 2006
Journal
Physical Review B
Publisher
American Physical Society
Publisher DOI
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Abstract
The optical reflectivity of a metal-dielectric-metal microcavity in which the upper layer is periodically perforated by narrow slits is explored. Complete characterization of the observed modes in terms of their resonant electromagnetic fields is achieved by comparison of the experimental data to the predictions of a finite-element ...
The optical reflectivity of a metal-dielectric-metal microcavity in which the upper layer is periodically perforated by narrow slits is explored. Complete characterization of the observed modes in terms of their resonant electromagnetic fields is achieved by comparison of the experimental data to the predictions of a finite-element model. In particular, we demonstrate that the slits provide efficient diffractive coupling to a surface plasmon mode buried within the microcavity whose propagation is strongly confined to the dielectric layer.
Physics and Astronomy
Faculty of Environment, Science and Economy
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