HAKOBYAN, Davit; MAGALLANES, Hernando; SENIUTINAS, Gediminas; JUODKAZIS, Saulius; BRASSELET, Etienne

doi:10.1002/adom.201500494

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HAKOBYAN, Davit
Laboratoire Ondes et Matière d'Aquitaine [LOMA]
Centre for Micro-Photonics [Hawthorn]

MAGALLANES, Hernando
Laboratoire Ondes et Matière d'Aquitaine [LOMA]

SENIUTINAS, Gediminas
Centre for Micro-Photonics [Hawthorn]

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Article de revue

Ce document a été publié dans

Advanced Optical Materials. 2016-02, vol. 4, n° 2, p. 306-312

Wiley

Résumé en anglais

Submicron-thick gold fi lms endowed with subwavelength patterning allow on-demand topological shaping of light, hence the precise delivery of optical orbital angular momentum. Several kinds of metallic metasurfaces enabling the generation of optical vortices with arbitrary topological charges in the visible domain are fabricated following a design based on space-variant subwavelength grating with discrete orientational distribution. The optical performances of obtained fl at spin–orbit optical elements designed to operate at 532 nm wavelength are experimentally assessed and satisfactorily compared to expectations. About 80% of optical vortex generation purity for predetermined topological charge up to | l | = 10 is achieved. Other designs that allow continuous orientational distribution of nanogratings as well as the superposition of orbital angular momentum states are also proposed.< Réduire

DOI

http://dx.doi.org/10.1002/adom.201500494

Project ANR

Initiative d'excellence de l'Université de Bordeaux - ANR-10-IDEX-0003

Origine

Importé de hal

Unités de recherche

Laboratoire Ondes et Matière d'Aquitaine (LOMA) - UMR 5798