Dual-comb optomechanical spectroscopy.
Journal
Nature communications
ISSN: 2041-1723
Titre abrégé: Nat Commun
Pays: England
ID NLM: 101528555
Informations de publication
Date de publication:
18 Aug 2023
18 Aug 2023
Historique:
received:
08
03
2023
accepted:
09
08
2023
medline:
19
8
2023
pubmed:
19
8
2023
entrez:
18
8
2023
Statut:
epublish
Résumé
Optical cavities are essential for enhancing the sensitivity of molecular absorption spectroscopy, which finds widespread high-sensitivity gas sensing applications. However, the use of high-finesse cavities confines the wavelength range of operation and prevents broader applications. Here, we take a different approach to ultrasensitive molecular spectroscopy, namely dual-comb optomechanical spectroscopy (DCOS), by integrating the high-resolution multiplexing capabilities of dual-comb spectroscopy with cavity optomechanics through photoacoustic coupling. By exciting the molecules photoacoustically with dual-frequency combs and sensing the molecular-vibration-induced ultrasound waves with a cavity-coupled mechanical resonator, we measure high-resolution broadband ( > 2 THz) overtone spectra for acetylene gas and obtain a normalized noise equivalent absorption coefficient of 1.71 × 10
Identifiants
pubmed: 37596269
doi: 10.1038/s41467-023-40771-3
pii: 10.1038/s41467-023-40771-3
pmc: PMC10439198
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
5037Subventions
Organisme : National Natural Science Foundation of China (National Science Foundation of China)
ID : 12022411
Organisme : National Natural Science Foundation of China (National Science Foundation of China)
ID : 12222404, 11974115
Organisme : National Natural Science Foundation of China (National Science Foundation of China)
ID : 11925401, 12234008
Organisme : National Natural Science Foundation of China (National Science Foundation of China)
ID : 62035005
Organisme : Science and Technology Commission of Shanghai Municipality (Shanghai Municipal Science and Technology Commission)
ID : 2019SHZDZX01
Informations de copyright
© 2023. Springer Nature Limited.
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