Wave Front Tuning of Coupled Hyperbolic Surface Waves on Anisotropic Interfaces

Taavi Repän*, Osamu Takayama, Andrei V. Lavrinenko

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

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Abstract

A photonic surface wave, a propagating optical mode localized at the interface of two media, can play a significant role in controlling the flow of light at nanoscale. Among various types of such waves, surface waves with hyperbolic dispersion or simply hyperbolic surface waves supported on anisotropic metal interfaces can be exploited to effectively control the propagation of lightwaves. We used semi-analytical and numerical methods to study the nature of surface waves on several configurations of three-layers metal–dielectric–metal systems including isotropic and anisotropic cases where the metal cladding layers were assumed to have infinite thickness. We used semi-analytical and numerical approaches to study the phenomena. We showed that the propagation of surface wave can be tuned from diverging to converging in the plane of the interface by the combination of metals with different anisotropic properties.
Original languageEnglish
Article number34
JournalPhotonics
Volume7
Issue number2
Number of pages10
ISSN2304-6732
DOIs
Publication statusPublished - 2020

Keywords

  • Surface wave antenna theory
  • Metamaterial
  • Hyperbolic metamaterial
  • Anisotropic material

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