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Resonant absorption of electromagnetic fields by surface plasmons buried in a multilayered plasmonic nanostructure
Hibbins, Alastair P.
Murray, W. Andrew
Barnes, William L.
Sambles, J. Roy
University of Exeter
Physical Review B
American Physical Society
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.
Alastair P. Hibbins, W. Andrew Murray, J. Tyler, S. Wedge, William L. Barnes, and J. Roy Sambles, Physical Review B, Vol. 74, article 073408 (2006). "Copyright © 2006 by the American Physical Society."
74 (7), article 073408