On surface-plasmon-polariton waves guided by the interface of a metal and a rugate filter with a sinusoidal refractive-index profile. Part II

High-phase-speed solutions

Mahmoud R M Atalla, Muhammad Faryad, Akhlesh Lakhtakia

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

In continuation of a previous paper [J. Opt. Soc. Am. B 27, 2218 (2010)], by solving a canonical boundary-value problem we found that the planar interface of a metal and a rugate filter can guide surface-plasmon-polariton (SPP) waves with phase speeds greater than the speed of light in free space. These SPP waves can be either p or s polarized, and can have extremely high phase speeds, but are very loosely bound to the metal/rugate-filter interface. In two practically implementable configurations with both partnering materials of finite thickness, both p- and s-polarized SPP waves with high phase speeds can be excited, provided that the thickness of the rugate filter is much larger than needed for SPP waves with low phase speeds.

Original languageEnglish (US)
Pages (from-to)3078-3086
Number of pages9
JournalJournal of the Optical Society of America B: Optical Physics
Volume29
Issue number11
DOIs
StatePublished - Nov 1 2012

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polaritons
refractivity
filters
profiles
metals
boundary value problems
configurations

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics
  • Statistical and Nonlinear Physics

Cite this

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