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Article Dans Une Revue Physical Review A : Atomic, molecular, and optical physics [1990-2015] Année : 2018

High-order Laguerre-Gauss polychromatic beams from Bragg-Berry flat optics

Résumé

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.
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Dates et versions

hal-02067908 , version 1 (14-03-2019)

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Mikaël Ghadimi Nassiri, Seong Yong Cho, Hiroyuki Yoshida, Masanori Ozaki, Etienne Brasselet. High-order Laguerre-Gauss polychromatic beams from Bragg-Berry flat optics. Physical Review A : Atomic, molecular, and optical physics [1990-2015], 2018, 98 (6), pp.063834. ⟨10.1103/PhysRevA.98.063834⟩. ⟨hal-02067908⟩

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