Highly Confined Hybrid Spoof Surface Plasmons in Ultrathin Metal-Dielectric Heterostructures

S. Hossein Mousavi, Alexander B. Khanikaev, Burton Neuner, III, Yoav Avitzour, Dmitriy Korobkin, Gabriel Ferro, and Gennady Shvets
Phys. Rev. Lett. 105, 176803 – Published 19 October 2010

Abstract

Highly confined “spoof” surface plasmons (SSPs) are theoretically predicted to exist in a perforated metal film coated with a thin dielectric layer. Strong modes confinement results from the additional waveguiding by the layer. Spectral characteristics, field distribution, and lifetime of these SSPs are tunable by the holes’ size and shape. SSPs exist both above and below the light line, offering two classes of applications: “perfect” far-field absorption and efficient emission into guided modes. It is experimentally shown that these plasmonlike modes can turn thin, weakly absorbing semiconductor films into perfect absorbers.

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  • Received 22 June 2010

DOI:https://doi.org/10.1103/PhysRevLett.105.176803

© 2010 The American Physical Society

Authors & Affiliations

S. Hossein Mousavi1, Alexander B. Khanikaev1, Burton Neuner, III1, Yoav Avitzour1, Dmitriy Korobkin1, Gabriel Ferro2, and Gennady Shvets1,*

  • 1Department of Physics, University of Texas at Austin, Austin, Texas 78712, USA
  • 2Laboratoire des Multimatériaux et Interfaces, Université Claude Bernard Lyon 1, 69622 Villeurbanne, France

  • *gena@physics.utexas.edu

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Vol. 105, Iss. 17 — 22 October 2010

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