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Proceedings Paper

Plasmonic films with a periodic arrangement of subwavelength slits
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Paper Abstract

In a recent paper [Phys. Rev. Lett. 94, 197401 (2005)], we introduced a mechanism for creating artificial high refractive index metamaterials by exploiting the existence of sub-wavelength propagating modes in metallic systems. We showed that a perfect metal film with a periodic arrangement of sub-wavelength cut-through slits can be regarded as a dielectric slab with a frequency-independent effective index. Here, we discuss the optical properties of such a system when the perfect metal condition is no longer valid, e.g., in the visible and near infrared wavelength regimes. If the metal obeys a plasmonic dispersion model, we find that films with a periodic arrangement of sub-wavelength slits support two distinct types of guided modes: a surface mode and a set of effective dielectric slab modes. We show how the behavior of both modes is affected by film thickness and surface properties.

Paper Details

Date Published: 1 March 2006
PDF: 12 pages
Proc. SPIE 6128, Photonic Crystal Materials and Devices IV, 612818 (1 March 2006); doi: 10.1117/12.648510
Show Author Affiliations
Peter B. Catrysse, Stanford Univ. (United States)
Georgios Veronis, Stanford Univ. (United States)
Jung-Tsung Shen, Stanford Univ. (United States)
Hocheol Shin, Stanford Univ. (United States)
Shanhui Fan, Stanford Univ. (United States)

Published in SPIE Proceedings Vol. 6128:
Photonic Crystal Materials and Devices IV
Ali Adibi; Shawn-Yu Lin; Axel Scherer, Editor(s)

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