Relevance of longitudinal fields of paraxial optical vortices

Forbes, Kayn A. ORCID: https://orcid.org/0000-0002-8884-3496, Green, Dale ORCID: https://orcid.org/0000-0002-2549-0486 and Jones, Garth A. (2021) Relevance of longitudinal fields of paraxial optical vortices. Journal of Optics, 23 (7). ISSN 2040-8978

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Abstract

Longitudinal electromagnetic fields generally become comparable with the usually dominant transverse components in strongly focused, non-paraxial beams. For paraxial optical vortex modes it is highlighted here how their angular momentum properties produce longitudinal fields that in general must be accounted for. First-order longitudinal components of quantized Laguerre–Gaussian modes are derived and numerically studied with respect to the paraxial parameter, highlighting light-matter and spin-orbit interactions that stem from the longitudinal fields of paraxial beams in free space. New restrictions are cast on the validity of neglecting longitudinal fields for paraxial optical vortices interacting with atoms, molecules and other nanostructures.

Item Type:	Article
Uncontrolled Keywords:	optical orbital angular momentum,optical vortices,paraxial optics,quantum electrodynamics,spin–orbit interaction of light,structured light,electronic, optical and magnetic materials,atomic and molecular physics, and optics ,/dk/atira/pure/subjectarea/asjc/2500/2504
Faculty \ School:	Faculty of Science > School of Chemistry
UEA Research Groups:	Faculty of Science > Research Groups > Chemistry of Light and Energy Faculty of Science > Research Groups > Centre for Photonics and Quantum Science
Related URLs:	http://www.scopus.com/inward/record.url?...
Depositing User:	LivePure Connector
Date Deposited:	21 May 2021 00:08
Last Modified:	09 Feb 2023 13:49
URI:	https://ueaeprints.uea.ac.uk/id/eprint/80062
DOI:	10.1088/2040-8986/abff96

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