Vortex light at the nanoscale: twists, spins, and surprises

Forbes, Kayn A. (2026) Vortex light at the nanoscale: twists, spins, and surprises. Reports on Progress in Physics, 89 (1).

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Abstract

For over three decades, the study of optical vortex beams carrying orbital angular momentum has been at the forefront of optics, driven by fundamental questions about optical momentum as well as diverse applications in quantum information, communications, and optical manipulation. Most work has focused on paraxial beams, whose transverse fields are accurately described by conventional wave optics and the Stokes formalism. By contrast, when light is confined to the nanoscale and tightly focused beyond the paraxial regime, vortex beams exhibit complex electromagnetic structures that transcend these conventional models. In this deeply non-paraxial regime, the resulting fields display rich and often counterintuitive behavior, opening new perspectives on light–matter interactions. This review unifies the emerging physics of nanoscale optical vortices by developing a coherent theoretical framework and offering a critical synthesis of recent advances, guiding readers toward a deeper understanding and stimulating future work in this rapidly evolving field.

Item Type:	Article
Uncontrolled Keywords:	optical vortices,nano-optics,structured light,angular momentum of light,non-paraxial optics
Faculty \ School:	Faculty of Science > School of Chemistry, Pharmacy and Pharmacology
Related URLs:	http://www.scopus.com/inward/record.url?...
Depositing User:	LivePure Connector
Date Deposited:	10 Feb 2026 13:40
Last Modified:	15 Feb 2026 07:30
URI:	https://ueaeprints.uea.ac.uk/id/eprint/101894
DOI:	10.1088/1361-6633/ae3971

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