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Experimentally excellent beaming in a two-layer dielectric structure

TitleExperimentally excellent beaming in a two-layer dielectric structure
Publication TypeJournal Article
Year of Publication2014
AuthorsTasolamprou, AC, Zhang, L, Kafesaki, M, Koschny, T, Soukoulis, CM
JournalOptics Express
Date Published09
Type of ArticleArticle
ISBN Number1094-4087
Accession NumberWOS:000342756500088
Keywordsarray, light, photonic-crystal, surface-modes, waves

We demonstrate both experimentally and theoretically that a two-layer dielectric structure can provide collimation and enhanced transmission of a Gaussian beam passing through it. This is due to formation of surface localized states along the layered structure and the coupling of these states to outgoing propagating waves. A system of multiple cascading two-layers can sustain the beaming for large propagation distances. (C) 2014 Optical Society of America

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