Coupling effect between two adjacent chiral structure layers

TitleCoupling effect between two adjacent chiral structure layers
Publication TypeJournal Article
Year of Publication2010
AuthorsLi ZF, Caglayan H, Colak E, Zhou JF, Soukoulis CM, Ozbay E
Journal TitleOptics Express
Date Published03/15
ISBN Number1094-4087
Accession NumberISI:000276002500003
Keywordsnegative-index metamaterials, refraction

A pair of mutually twisted metallic cross-wires can produce giant optical activity. When this single chiral layer is stacked layer by layer in order to build a thick chiral metamaterial, strong coupling effects are found between the two adjacent chiral layers. We studied these coupling effects numerically and experimentally. The results show that the existing coupling between chiral layers can make the chiral properties of a two-layered chiral metamaterial different from the constituting single chiral layers. It is explained qualitatively that the coupling effects are generated from the coupling of metallic cross-wires belonging to different chiral layers. Our experimental results are in good agreement with the simulation results. (C) 2010 Optical Society of America

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