BRASSELET, Etienne

doi:10.1103/PhysRevA.82.063836

Métadonnées

Afficher la notice complète

Licence d’utilisation du document

BRASSELET, Etienne
Centre de physique moléculaire optique et hertzienne [CPMOH]

Langue

Article de revue

Ce document a été publié dans

Physical Review A : Atomic, molecular, and optical physics [1990-2015]. 2010-12-29, vol. 82, n° 6, p. 063836 (4)

American Physical Society

Résumé en anglais

We show experimentally that optical phase singularities (PSs) can be written and erased, locally and in a controllable manner, into a light beam using the giant Kerr optical nonlinearities of liquid crystals. The method relies on the nonlinear optical spin-orbit coupling experienced by a collimated probe beam when a collinear focused pump beam imprints a radial birefringent pattern into a nematic film. In addition, experimental data are quantitatively described, accounting for the elastic anisotropy of the material and its nonlocal spatial response to the pump light field. Since we show that the optical intensity of a light beam (the "pump") controls the phase of another beam (the "probe") in a singular fashion (i.e., with the generation of a screw PS) via their interaction in a nonlinear medium that involves spin-orbit coupling, we dubbed such a nonlinear optical process as spin-orbit optical cross-phase-modulation.< Réduire

Métadonnées

Licence d’utilisation du document

Spin-orbit optical cross-phase-modulation

Langue

Ce document a été publié dans

Résumé en anglais

DOI

Origine

Unités de recherche