High-order Laguerre-Gauss polychromatic beams from Bragg-Berry flat optics
Language
en
Article de revue
This item was published in
Physical Review A : Atomic, molecular, and optical physics [1990-2015]. 2018, vol. 98, n° 6, p. 063834
American Physical Society
English Abstract
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 ...Read more >
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.Read less <
ANR Project
Traitement hyperspectral du moment angulaire orbital de la lumière - ANR-15-CE30-0018
Origin
Hal imported