title: Surface plasmon mode steering and negative refraction.
abstract: 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.
authors.affiliation: ISIS, Université de Strasbourg and CNRS, Strasbourg, France.
authors.forename: Benedikt
authors.initials: B
authors.lastname: Stein
authors.forename: Jean-Yves
authors.initials: JY
authors.lastname: Laluet
authors.forename: Eloïse
authors.initials: E
authors.lastname: Devaux
authors.forename: Cyriaque
authors.initials: C
authors.lastname: Genet
authors.forename: Thomas W
authors.initials: TW
authors.lastname: Ebbesen