GHADIMI NASSIRI, Mikaël; CHO, Seong Yong; YOSHIDA, Hiroyuki; OZAKI, Masanori; BRASSELET, Etienne

doi:10.1103/PhysRevA.98.063834

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GHADIMI NASSIRI, Mikaël
Laboratoire Ondes et Matière d'Aquitaine [LOMA]

CHO, Seong Yong
Graduate School of Engineering [Suita, Osaka]

YOSHIDA, Hiroyuki
Graduate School of Engineering [Suita, Osaka]
PRESTO [JST

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Ce document a été publié dans

Physical Review A : Atomic, molecular, and optical physics [1990-2015]. 2018, vol. 98, n° 6, p. 063834

American Physical Society

Résumé en anglais

We report on the design, fabrication, and experimental characterization of reflective geometric phase optical elements enabling the generation of scalar and vectorial high-order Laguerre-Gauss optical beams over a broad spectral range. This is made possible by combining azimuthal and radial structuring of helix-based liquid-crystal films exhibiting the circular Bragg reflection phenomenon. By extending the previously introduced concept of Bragg-Berry optical elements to the polychromatic shaping of the radial degrees of freedom and showing their combination with azimuthal ones, this work suggests that spectrally broadband spin-orbit processing of optical information over multiple spatial degrees of freedom can be further considered on experimental grounds.< Réduire

DOI

http://dx.doi.org/10.1103/PhysRevA.98.063834

Project ANR

Traitement hyperspectral du moment angulaire orbital de la lumière - ANR-15-CE30-0018

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