Ultra-sensitive measurement of transverse displacements with linear photonic gears.
Journal
Nature communications
ISSN: 2041-1723
Titre abrégé: Nat Commun
Pays: England
ID NLM: 101528555
Informations de publication
Date de publication:
28 Feb 2022
28 Feb 2022
Historique:
received:
19
07
2021
accepted:
04
01
2022
entrez:
1
3
2022
pubmed:
2
3
2022
medline:
2
3
2022
Statut:
epublish
Résumé
Accurately measuring mechanical displacements is essential for a vast portion of current technologies. Several optical techniques accomplish this task, allowing for non-contact sensing even below the diffraction limit. Here we introduce an optical encoding technique, dubbed "linear photonic gears", that enables ultra-sensitive measurements of a transverse displacement by mapping it into the polarization rotation of a laser beam. In ordinary ambient conditions, we measure the relative shift between two objects with a resolution of 400 pm. We argue that a resolution of 50 pm should be achievable with existing state-of-the-art technologies. Our single-optical-path scheme is intrinsically stable and it could be implemented as a compact sensor, using cost effective integrated optics. We anticipate it may have a strong impact on both research and industry.
Identifiants
pubmed: 35228536
doi: 10.1038/s41467-022-28700-2
pii: 10.1038/s41467-022-28700-2
pmc: PMC8885676
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
1080Subventions
Organisme : EC | EU Framework Programme for Research and Innovation H2020 | H2020 Priority Excellent Science | H2020 European Research Council (H2020 Excellent Science - European Research Council)
ID : 694683
Informations de copyright
© 2022. The Author(s).
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