title: High efficiency, high selectivity ultra-thin resonant diffractive elements.
abstract: Resonant diffractive elements as the association of a surface corrugation with a surface wave exhibit boosted diffraction efficiency and high selectivity properties under the effect of ultra-shallow subwavelength surface reliefs. This is demonstrated by four examples of resonant functional structures made of very different material systems over the optical spectrum. All four structures are fabricated by slow wet etching as the inherent lateral broadening in corrugations of very small aspect ratio can be neglected.
authors.affiliation: University of Lyon, Laboratoire Hubert Curien UMR CNRS 5516, Saint-Etienne, France.
authors.forename: Svetlen
authors.initials: S
authors.lastname: Tonchev
authors.forename: Thomas
authors.initials: T
authors.lastname: Kämpfe
authors.forename: Olivier
authors.initials: O
authors.lastname: Parriaux
mesh_terms: D004867:Equipment Design; D006801:Humans; D008027:Light; D055095:Optics and Photonics; D012031:Refractometry / Q000295:instrumentation*