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Phys Rev Lett. 2011 Mar 25;106(12):123902. Epub 2011 Mar 23.

Plasmonic Brewster angle: broadband extraordinary transmission through optical gratings.

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  • 1Department of ECE, University of Texas at Austin, Austin, Texas 78712, USA. alu@mail.utexas.edu

Abstract

Extraordinary optical transmission through metallic gratings is a well established effect based on the collective resonance of corrugated screens. Being based on plasmonic resonances, its bandwidth is inherently narrow, in particular, for thick screens and narrow apertures. We introduce here a different mechanism to achieve total transmission through an otherwise opaque screen, based on an ultrabroadband tunneling that can span from dc to the visible range at a given incidence angle. This phenomenon effectively represents the equivalent of Brewster transmission for plasmonic and opaque screens.

PMID:
21517317
[PubMed]
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