Accurate recognition of light beams carrying orbital angular momentum through scattering media using ghost diffraction

Cao, Y; Chen, W

Accurate recognition of light beams carrying orbital angular momentum through scattering media using ghost diffraction

Cao, Y

Chen, W

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Publisher:: AIP Publishing
Publication Type:: Journal Article
Citation:: Applied Physics Letters, 2024, 125, (5)
Issue Date:: 2024-07-29

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Field	Value	Language
dc.contributor.author	Cao, Y https://orcid.org/0000-0002-3243-6103
dc.contributor.author	Chen, W
dc.date.accessioned	2025-02-24T02:26:39Z
dc.date.available	2025-02-24T02:26:39Z
dc.date.issued	2024-07-29
dc.identifier.citation	Applied Physics Letters, 2024, 125, (5)
dc.identifier.issn	0003-6951
dc.identifier.issn	1077-3118
dc.identifier.uri	http://hdl.handle.net/10453/185277
dc.description.abstract	We report a ghost diffraction-based approach to realize accurate recognition of light beams carrying orbital angular momentum (OAM) through dynamic and complex scattering media. A bit sequence is first encoded into an OAM beam, which is sequentially modulated by a series of Hadamard patterns, and then an optical wave propagates through dynamic and complex scattering media. The collected single-pixel light intensities are temporally corrected, and ghost images can be reconstructed by using the principle of ghost diffraction. The reconstructed ghost images are further processed by using block-matching and 3D filtering with image registration, which are then utilized for OAM recognition assisted by the featured normalized cross correlation. Optical experiments are conducted to demonstrate that light beams carrying OAM can be accurately recognized in dynamic and complex scattering environments, and the proposed approach is feasible and effective. The developed ghost diffraction-based approach could open an avenue for various OAM-encoded applications in dynamic and complex scattering environments.
dc.language	English
dc.publisher	AIP Publishing
dc.relation.ispartof	Applied Physics Letters
dc.relation.isbasedon	10.1063/5.0220504
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	02 Physical Sciences, 09 Engineering, 10 Technology
dc.subject.classification	Applied Physics
dc.subject.classification	40 Engineering
dc.subject.classification	51 Physical sciences
dc.title	Accurate recognition of light beams carrying orbital angular momentum through scattering media using ghost diffraction
dc.type	Journal Article
utslib.citation.volume	125
utslib.for	02 Physical Sciences
utslib.for	09 Engineering
utslib.for	10 Technology
pubs.organisational-group	University of Technology Sydney
pubs.organisational-group	University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	University of Technology Sydney/Faculty of Engineering and Information Technology/School of Electrical and Data Engineering
utslib.copyright.status	closed_access	*
dc.date.updated	2025-02-24T02:26:38Z
pubs.issue	5
pubs.publication-status	Published
pubs.volume	125
utslib.citation.issue	5

Abstract:

We report a ghost diffraction-based approach to realize accurate recognition of light beams carrying orbital angular momentum (OAM) through dynamic and complex scattering media. A bit sequence is first encoded into an OAM beam, which is sequentially modulated by a series of Hadamard patterns, and then an optical wave propagates through dynamic and complex scattering media. The collected single-pixel light intensities are temporally corrected, and ghost images can be reconstructed by using the principle of ghost diffraction. The reconstructed ghost images are further processed by using block-matching and 3D filtering with image registration, which are then utilized for OAM recognition assisted by the featured normalized cross correlation. Optical experiments are conducted to demonstrate that light beams carrying OAM can be accurately recognized in dynamic and complex scattering environments, and the proposed approach is feasible and effective. The developed ghost diffraction-based approach could open an avenue for various OAM-encoded applications in dynamic and complex scattering environments.

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http://hdl.handle.net/10453/185277