Resonant absorption of electromagnetic fields by surface plasmons buried in a multilayered plasmonic nanostructure

A. P. Hibbins, W. A. Murray, J. Tyler, S. Wedge, W. L. Barnes, and J. R. Sambles
Phys. Rev. B 74, 073408 – Published 22 August 2006

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 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.

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  • Received 30 June 2006

DOI:https://doi.org/10.1103/PhysRevB.74.073408

©2006 American Physical Society

Authors & Affiliations

A. P. Hibbins, W. A. Murray, J. Tyler, S. Wedge, W. L. Barnes, and J. R. Sambles

  • Electromagnetic Materials Group, School of Physics, University of Exeter, Exeter EX4 4QL, United Kingdom

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Issue

Vol. 74, Iss. 7 — 15 August 2006

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