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Liquid crystal anisotropic axicon for the generation of non-diffracting Bessel beams with longitudinally varying polarization

Abstract: In this work we demonstrate a tunable liquid-crystal element of linear phase profile along the radial coordinate. In combination with a regular refractive axicon, it behaves as an anisotropic axicon, generating the collinear superposition of two orthogonally polarized Bessel beams with different propagation constant. This superposition results in a Bessel beam where the state of polarization (SOP) varies periodically along propagation. Experimental results probe the voltage control of the SOP oscillating period, which agree well with theory. This compound axicon is a very compact and efficient way of generating Bessel beams with polarization modulation, thus representing a significant advantage over other methods reported in the literature that require bulk optical systems based on spatial light modulators.

 Autoría: Jankowski T., Bennis N., Spadlo A., Algorri J.F., Sánchez-López M.d.M., Moreno I.,

 Fuente: Optics and Laser Technology, 2024, 170, 110255

Editorial: Elsevier

 Fecha de publicación: 01/03/2024

Nº de páginas: 8

Tipo de publicación: Artículo de Revista

 DOI: 10.1016/j.optlastec.2023.110255

ISSN: 0030-3992

 Proyecto español: PID2019-107270RB-C21

Url de la publicación: https://doi.org/10.1016/j.optlastec.2023.110255

Autoría

JANKOWSKI, TOMASZ

BENNIS, NOUREDDINE

SÁNCHEZ LÓPEZ, MARÍA DEL MAR

IGNACIO MORENO SORIANO