Arbitrary vortex arrays realized from optical winding of frustrated chiral liquid crystals
Langue
en
Article de revue
Ce document a été publié dans
Journal of Optics. 2013, vol. 15, n° 4, p. 044021
Institute of Physics (IOP)
Résumé en anglais
We report on the realization of on-demand reconfigurable arbitrary arrays of microscopic optical vortex generators in chiral liquid crystals. These generators are optically inscribed in frustrated cholesteric films by means ...Lire la suite >
We report on the realization of on-demand reconfigurable arbitrary arrays of microscopic optical vortex generators in chiral liquid crystals. These generators are optically inscribed in frustrated cholesteric films by means of the laser-induced local winding of the chiral liquid crystal mesophase. This leads to the storage of microscopic, metastable, topological defect structures endowed with space-variant birefringent properties. Such structures are shown to produce optical vortices with a well-defined orbital state as a result of a spin-to-orbital angular momentum conversion process.< Réduire
Mots clés en anglais
optics of liquid crystals
topological liquid crystal defects
optical vortex generation
Origine
Importé de halUnités de recherche