®®®® SIIA Público

Título del libro: Ultraviolet Self-Diffraction Effects Exhibited By Ion-Implanted Au Nanoparticles In Silica
Título del capítulo: Device for generating modulated Poincare beams

Autores UNAM:
VERONICA VICUÑA HERNANDEZ;
Autores externos:

Idioma:
Inglés
Año de publicación:
2021
Palabras clave:

Fruits; Polarization; Rotation rate; Dark hollow beam; Disclinations; Freeforms; Liquid crystalbased device.; Liquid-crystals; Orbital angular momentum; Pancharatnam-Berry phase; Poincare; Polarization singularities; Variable polarizations; Liquid crystals


Resumen:

We present a device based on liquid crystal and via Pancharatnam-Berry phase to generate Poincarfie 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 con_gurations, 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. © 2021 OSA - The Optical Society. All rights reserved.


Entidades citadas de la UNAM: