A Surface Plasmon Microcavity Between the Toroidal and Flat Metallic Surfaces

A Surface Plasmon Microcavity Between the Toroidal and Flat Metallic Surfaces:

Abstract

We consider the formation of the surface plasmon polariton (SPP) mode in the structure with a metallic torus and a metallic
flat surface separated by a dielectric medium. The energy of the wave field is mainly concentrated in the dielectric medium
at the vicinity of the minimum thickness of the gap between the metallic surfaces. The dependence of the resonant frequency
on parameters of the structure was determined. The strongly localized SPP mode in the transverse direction contributes to
the increase in the Purcell factor that is crucial for enhancement of the spontaneous emission rate.

• Content Type Journal Article
• Pages 1-5
• DOI 10.1007/s11468-011-9267-7
• Authors
  • Artashes Vardanyan, Department of Radiophysics, Yerevan State University, A. Manoogian 1, Yerevan, 0025 Armenia
  • Hovhannes Haroyan, Department of Radiophysics, Yerevan State University, A. Manoogian 1, Yerevan, 0025 Armenia
  • Arsen Babajanyan, Department of Radiophysics, Yerevan State University, A. Manoogian 1, Yerevan, 0025 Armenia
  • Khachatur Nerkararyan, Department of Radiophysics, Yerevan State University, A. Manoogian 1, Yerevan, 0025 Armenia
  • Barry Friedman, Department of Physics, Sam Houston State University, Huntsville, TX 77341, USA

• Journal Plasmonics
• Online ISSN 1557-1963
• Print ISSN 1557-1955