Increasing the topological diversity of light with modulated Poincaré beams. (21st April 2021)

• Record Type: Journal Article
• Authors: Darvehi, Pegah; Vicuña-Hernández, Verónica; Marrucci, Lorenzo; Piedipalumbo, Ester; Santamato, Enrico; Piccirillo, Bruno
• Is Part Of: Journal of optics. Volume 23:Number 5(2021)
• Publication Date: 2021-04-21
• Subjects: optical singularities -- optical angular momentum -- geometric phase; Optics -- Periodicals; 535.05
• DOI: 10.1088/2040-8986/abf293
• Languages: English
• ISSNs: 2040-8978

Abstract

Abstract: We introduce a wide class of singular inhomogeneously polarized beams characterized by a nonuniform rotation rate of the local polarization azimuth about a C- or a V-point. They are obtained by adding an extra phase modulation with an m -fold rotational symmetry to the helical wavefronts underpinning Poincaré beams. The resulting modulated Poincaré beams have been theoretically studied and experimentally generated using tailored space-varying-axis plates based on liquid crystals.