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Proceedings Paper

Asymmetric and symmetric coupling of surface-plasmon-polariton waves to planar interfaces with periodically patterned slanted columnar thin films of silver
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Paper Abstract

We investigated the interaction of a periodically patterned columnar thin film (PP-CTF) of silver with light incident on it from a vacuous half space, as a function of the angle ψ between the plane of incidence and the morphologically significant plane of the PP-CTF. The chosen structure had previously been shown to be capable of showing asymmetric coupling of surface-plasmon-polariton (SPP) waves over a broad bandwidth in the visible regime with incident light when the plane of incidence coincides with the morphologically significant plane of the PP-CTF ( ψ = 0°). We determined experimentally that coupling may be completely symmetric in some spectral regime, when the plane of incidence is orthogonal to the morphologically significant plane of the PP- CTF ( ψ = 90°). Whereas asymmetric coupling occurs with quasilinear dispersion when ψ = 0°, completely symmetric coupling occurs with quasiparabolic dispersion.

Paper Details

Date Published: 5 May 2015
PDF: 6 pages
Proc. SPIE 9502, Metamaterials X, 95020R (5 May 2015); doi: 10.1117/12.2179008
Show Author Affiliations
Jhuma Dutta, Indian Institute of Technology Kanpur (India)
S. Anantha Ramakrishna, Indian Institute of Technology Kanpur (India)
Akhlesh Lakhtakia, The Pennsylvania State Univ. (United States)

Published in SPIE Proceedings Vol. 9502:
Metamaterials X
Vladimír Kuzmiak; Peter Markos; Tomasz Szoplik, Editor(s)

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