Dual Coaxial Longitudinal Polarization Vortex Structures

Journal article (2020)
Research Group
ImPhys/Optics (AS) (TU Delft)
Copyright: © 2020 Z. Man, Z. Xi, Xiaocong Yuan, R. E. Burge, Paul Urbach
DOI: https://doi.org/10.1103/PhysRevLett.124.103901
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Published Date

2020

Language

English

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Faculty

Applied Sciences

Department

ImPhys/Imaging Physics

Research Group

ImPhys/Optics

Abstract

Carrying orbital angular momentum per photon, the optical vortex has elicited widespread interest. Here, we demonstrate that dual coaxial longitudinal polarization vortices can appear upon a nonparaxial propagation of a tightly focused Pancharatnam-Berry tailored Laguerre-Gaussian beam. Most importantly, it is capable of accessing arbitrary independent topological charges for both vortices, as well as predesigned tunable spacing distances between them.