Surface plasmon mode steering and negative refraction

The propagation of surface plasmon beams through singly and doubly periodic metallic gratings is analyzed both in real and Fourier spaces. Large beam steering effects are experimentally revealed by probing the isofrequency surfaces (IFS) related to propagating plasmonic Bloch waves inside the gratin...

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Bibliographic Details
Published inPhysical review letters Vol. 105; no. 26; p. 266804
Main Authors Stein, Benedikt, Laluet, Jean-Yves, Devaux, Eloïse, Genet, Cyriaque, Ebbesen, Thomas W
Format Journal Article
LanguageEnglish
Published United States 31.12.2010
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Summary:The propagation of surface plasmon beams through singly and doubly periodic metallic gratings is analyzed both in real and Fourier spaces. Large beam steering effects are experimentally revealed by probing the isofrequency surfaces (IFS) related to propagating plasmonic Bloch waves inside the gratings. In particular, negative refraction is demonstrated close to the Bragg condition. We analyze how the local structure of the IFS can amplify the sensitivity of surface plasmon-based sensors.
ISSN:1079-7114
DOI:10.1103/PhysRevLett.105.266804