Building paraxial optical skyrmions using rational maps

Cisowski, C., Ross, C. and Franke-Arnold, S. (2023) Building paraxial optical skyrmions using rational maps. Advanced Photonics Research, 4(4), 2200350. (doi: 10.1002/adpr.202200350)

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A simple mathematical expression based on rational maps to describe all optical paraxial skyrmion known to date, including Néel-type and Bloch-type skyrmions, bimerons, and anti-skyrmions, is introduced. This expression is derived solely from topological considerations and outlines the rules that fully polarized paraxial light fields must obey to qualify as optical skyrmions. It is shown that rational maps can be implemented experimentally by superposing a pair of orthogonally polarized Laguerre–Gaussian modes. Novel optical skyrmion fields, called multi-skyrmions, are obtained upon generalizing the proposed expression, laying the foundation for the exploration of skyrmion nucleation and annihilation mechanisms in optics.

Item Type:Articles
Keywords:Rational maps, skyrmion, structured light.
Glasgow Author(s) Enlighten ID:Franke-Arnold, Professor Sonja and Cisowski, Dr Claire Marie
Authors: Cisowski, C., Ross, C., and Franke-Arnold, S.
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Advanced Photonics Research
ISSN (Online):2699-9293
Published Online:25 February 2023
Copyright Holders:Copyright © 2023 The Authors
First Published:First published in Advanced Photonics Research 4(4): 2200350
Publisher Policy:Reproduced under a Creative Commons License

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
307454Claire Marie Cisowski - Newton Fellowship Application 2019Sonja Franke-ArnoldThe Royal Society (ROYSOC)NIF\R1\192384P&S - Physics & Astronomy