Phase preservation of orbital angular momentum of light in multiple scattering environment

Igor Meglinski; Ivan Lopushenko; Anton Sdobnov; Alexander Bykov

doi:10.1038/s41377-024-01562-7

Phase preservation of orbital angular momentum of light in multiple scattering environment

Igor Meglinski^*, Ivan Lopushenko, Anton Sdobnov, Alexander Bykov^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

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Abstract

Recent advancements in wavefront shaping techniques have facilitated the study of complex structured light’s propagation with orbital angular momentum (OAM) within various media. The introduction of spiral phase modulation to the Laguerre–Gaussian (LG) beam during its paraxial propagation is facilitated by the negative gradient of the medium’s refractive index change over time, leading to a notable increase in the rate of phase twist, effectively observed as phase retardation of the OAM. This approach attains remarkable sensitivity to even the slightest variations in the medium’s refractive index (∼10−6). The phase memory of OAM is revealed as the ability of twisted light to preserve the initial helical phase even propagating through the turbid tissue-like multiple scattering medium. The results confirm fascinating opportunities for exploiting OAM light in biomedical applications, e.g. such as non-invasive trans-cutaneous glucose diagnosis and optical communication through biological tissues and other optically dense media.

Original language	English
Article number	214
Number of pages	13
Journal	Light: Science & Applications
Volume	13
Issue number	1
Early online date	26 Aug 2024
DOIs	https://doi.org/10.1038/s41377-024-01562-7
Publication status	Published - Dec 2024

Bibliographical note

Copyright © The Author(s) 2024. 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 licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence 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 licence, visit https://creativecommons.org/licenses/by/4.0/

Funding

This article is based upon work from COST Action CA21159\u2014understanding interaction light\u2014biological surfaces: the possibility for new electronic materials and devices (PhoBioS) and supported by COST (European Cooperation in Science and Technology). The authors also acknowledge the support from the Leverhulme Trust and The Royal Society (ref. no.: APX111232 APEX awards 2021), UKKi UK-Israel innovation researcher mobility, and Academy of Finland (grant projects 325097 and 351068).

Funders	Funder number
Leverhulme Trust
European Cooperation in Science and Technology
UKKi UK-Israel
Royal Society	APX111232
Research Council of Finland	325097, 351068

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10.1038/s41377-024-01562-7Licence: CC BY 4.0

I Meglinski et al_Phase preservation of orbital angular momentum of light in multiple scattering environment
Copyright © The Author(s) 2024. 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 licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence 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 licence, visit https://creativecommons.org/licenses/by/4.0/
Final published version, 2.09 MBLicence: CC BY 4.0

Cite this

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title = "Phase preservation of orbital angular momentum of light in multiple scattering environment",

abstract = "Recent advancements in wavefront shaping techniques have facilitated the study of complex structured light{\textquoteright}s propagation with orbital angular momentum (OAM) within various media. The introduction of spiral phase modulation to the Laguerre–Gaussian (LG) beam during its paraxial propagation is facilitated by the negative gradient of the medium{\textquoteright}s refractive index change over time, leading to a notable increase in the rate of phase twist, effectively observed as phase retardation of the OAM. This approach attains remarkable sensitivity to even the slightest variations in the medium{\textquoteright}s refractive index (∼10−6). The phase memory of OAM is revealed as the ability of twisted light to preserve the initial helical phase even propagating through the turbid tissue-like multiple scattering medium. The results confirm fascinating opportunities for exploiting OAM light in biomedical applications, e.g. such as non-invasive trans-cutaneous glucose diagnosis and optical communication through biological tissues and other optically dense media.",

author = "Igor Meglinski and Ivan Lopushenko and Anton Sdobnov and Alexander Bykov",

note = "Copyright {\textcopyright} The Author(s) 2024. 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 licence, and indicate if changes were made. The images or other third party material in this article are included in the article{\textquoteright}s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article{\textquoteright}s Creative Commons licence 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 licence, visit https://creativecommons.org/licenses/by/4.0/",

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Phase preservation of orbital angular momentum of light in multiple scattering environment

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