Device for generating modulated Poincaré beams

Pegah Darvehi; Verónica Vicuña Hernandez; Lorenzo Marrucci; Ester Piedipalumbo; Enrico Santamato; Bruno Piccirillo

doi:10.1117/12.2603612

19 November 2021 Device for generating modulated Poincaré beams

Pegah Darvehi, Verónica Vicuña Hernandez, Lorenzo Marrucci, Ester Piedipalumbo, Enrico Santamato, Bruno Piccirillo

Proceedings Volume 12078, International Optical Design Conference 2021; 1207804 (2021) https://doi.org/10.1117/12.2603612
Event: International Optical Design Conference - IODC 2021, 2021, Online Only

Abstract

We present a device based on liquid crystal and via Pancharatnam-Berry phase to generate Poincare beams by the coherent collinear superposition of two Free-Form Dark Hollow (FFDH) beams. We generate beams with spatially-variable polarization encoded on their cross section showing disclinations in the azimuth orientation and mappings of the Poincare sphere onto the transverse mode. We report generated beams characterized by nonuniform rotation rate of the local polarization azimuth in different polarization configurations, radial and azimuthal, lemon and star disclinations, and other richer and complex higher-order disclinations, by using tailored space-varying-axis plates based on liquid crystals.

Conference Presentation

Citation Download Citation

Pegah Darvehi, Verónica Vicuña Hernandez, Lorenzo Marrucci, Ester Piedipalumbo, Enrico Santamato, and Bruno Piccirillo "Device for generating modulated Poincaré beams", Proc. SPIE 12078, International Optical Design Conference 2021, 1207804 (19 November 2021); https://doi.org/10.1117/12.2603612

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