Structured transverse orbital angular momentum probed by a levitated optomechanical sensor

The momentum carried by structured light fields exhibits a rich array of surprising features. In this work, we generate transverse orbital angular momentum (TOAM) in the interference field of two parallel and counter-propagating linearly-polarised focused beams, synthesising an array of identical ha...

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Autores principales: Hu, Yanhui, Kingsley-Smith, Jack J., Nikkhou, Maryam, Sabin, James A., Rodríguez-Fortuño, Francisco J., Xu, Xiaohao, Millen, James
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2023
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10164142/
https://www.ncbi.nlm.nih.gov/pubmed/37149678
http://dx.doi.org/10.1038/s41467-023-38261-7
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author Hu, Yanhui
Kingsley-Smith, Jack J.
Nikkhou, Maryam
Sabin, James A.
Rodríguez-Fortuño, Francisco J.
Xu, Xiaohao
Millen, James
author_facet Hu, Yanhui
Kingsley-Smith, Jack J.
Nikkhou, Maryam
Sabin, James A.
Rodríguez-Fortuño, Francisco J.
Xu, Xiaohao
Millen, James
author_sort Hu, Yanhui
collection PubMed
description The momentum carried by structured light fields exhibits a rich array of surprising features. In this work, we generate transverse orbital angular momentum (TOAM) in the interference field of two parallel and counter-propagating linearly-polarised focused beams, synthesising an array of identical handedness vortices carrying intrinsic TOAM. We explore this structured light field using an optomechanical sensor, consisting of an optically levitated silicon nanorod, whose rotation is a probe of the optical angular momentum, which generates an exceptionally large torque. This simple creation and direct observation of TOAM will have applications in studies of fundamental physics, the optical manipulation of matter and quantum optomechanics.
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spelling pubmed-101641422023-05-08 Structured transverse orbital angular momentum probed by a levitated optomechanical sensor Hu, Yanhui Kingsley-Smith, Jack J. Nikkhou, Maryam Sabin, James A. Rodríguez-Fortuño, Francisco J. Xu, Xiaohao Millen, James Nat Commun Article The momentum carried by structured light fields exhibits a rich array of surprising features. In this work, we generate transverse orbital angular momentum (TOAM) in the interference field of two parallel and counter-propagating linearly-polarised focused beams, synthesising an array of identical handedness vortices carrying intrinsic TOAM. We explore this structured light field using an optomechanical sensor, consisting of an optically levitated silicon nanorod, whose rotation is a probe of the optical angular momentum, which generates an exceptionally large torque. This simple creation and direct observation of TOAM will have applications in studies of fundamental physics, the optical manipulation of matter and quantum optomechanics. Nature Publishing Group UK 2023-05-06 /pmc/articles/PMC10164142/ /pubmed/37149678 http://dx.doi.org/10.1038/s41467-023-38261-7 Text en © The Author(s) 2023 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
Hu, Yanhui
Kingsley-Smith, Jack J.
Nikkhou, Maryam
Sabin, James A.
Rodríguez-Fortuño, Francisco J.
Xu, Xiaohao
Millen, James
Structured transverse orbital angular momentum probed by a levitated optomechanical sensor
title Structured transverse orbital angular momentum probed by a levitated optomechanical sensor
title_full Structured transverse orbital angular momentum probed by a levitated optomechanical sensor
title_fullStr Structured transverse orbital angular momentum probed by a levitated optomechanical sensor
title_full_unstemmed Structured transverse orbital angular momentum probed by a levitated optomechanical sensor
title_short Structured transverse orbital angular momentum probed by a levitated optomechanical sensor
title_sort structured transverse orbital angular momentum probed by a levitated optomechanical sensor
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10164142/
https://www.ncbi.nlm.nih.gov/pubmed/37149678
http://dx.doi.org/10.1038/s41467-023-38261-7
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