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Orbital angular momentum with topologically controlled beam sizes
Abstract
Laser beams carrying orbital angular momentum (OAM), so-called vortex beams, are highly topical forms of light, having found a myriad of applications across diverse fields. The usual approach to their creation, either internal or external to lasers, imbues them with a size that scales with the topological charge, for an ever larger ring of light. Here we show that this need not be the case, demonstrating arbitrary topologically controlled beam sizes, from maintaining an OAM-independent size to exotic functional dependence. We use the opportunity to highlight inconsistencies in prior studies where OAM and size have been conflated for erroneous conclusions, and provide a framework for overcoming this.
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“Consequently, higher-order skyrmions must have a larger spatial extent due the ℓ-dependent scaling of the underlying LG modes (81).”
From Topological robustness of optical skyrmions through a real-world free-space link (2026) · cites this paper as [81]
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“This means that higher-order topologies experienced stronger turbulence strengths, due to the inherent scaling of LG transverse beam size with OAM (81).”
From Topological robustness of optical skyrmions through a real-world free-space link (2026) · cites this paper as [81]
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Cited by
Sorted by citations
Topological robustness of optical skyrmions through a real-world free-space link
Peters, C., Hakobyan, V., Drozdov, A., Brasselet, E., Cox, M., & Forbes, A. (2026) · Science Advances · doi:10.1126/sciadv.aee2671 · Cited by 11
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Metadata
- Authors
- Cocotos, V., & Forbes, A.
- Venue
- Journal of Optics
- Publisher
- IOP Publishing
- Published
- 2025-07-01
- Volume
- 27
- Issue
- 7
- Pages
- 07LT01
- ISSN
- 2040-8978
- 2040-8986
- Cited by
- 9
- References
- 0
- Licence
- Funders
- SA QuTI and the CSIR Rental Pool Programme
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