Doubly resonant sub-ppt photoacoustic gas detection with eight decades dynamic range.
Acoustic resonator
Gas sensing
Optical cavity
Photoacoustic spectroscopy
Quartz tuning fork
Ultra-high sensitivity
Ultra-wide dynamic range
Journal
Photoacoustics
ISSN: 2213-5979
Titre abrégé: Photoacoustics
Pays: Germany
ID NLM: 101622604
Informations de publication
Date de publication:
Sep 2022
Sep 2022
Historique:
received:
18
06
2022
revised:
09
07
2022
accepted:
19
07
2022
entrez:
7
9
2022
pubmed:
8
9
2022
medline:
8
9
2022
Statut:
epublish
Résumé
Photoacoustic spectroscopy (PAS) based gas sensors with high sensitivity, wide dynamic range, low cost, and small footprint are desirable in energy, environment, safety, and public health. However, most works have focused on either acoustic resonator to enhance acoustic wave or optical resonator to enhance optical wave. Herein, we develop a gas sensor based on doubly resonant PAS in which the acoustic and optical waves are simultaneously enhanced using combined optical and acoustic resonators in a centimeter-long configuration. Not only the lower detection limit is enhanced by the double standing waves, but also the upper detection limit is expanded due to the short resonators. As an example, we developed a sensor by detecting acetylene (C
Identifiants
pubmed: 36068805
doi: 10.1016/j.pacs.2022.100387
pii: S2213-5979(22)00052-0
pmc: PMC9441262
doi:
Types de publication
Journal Article
Langues
eng
Pagination
100387Informations de copyright
© 2022 The Authors.
Déclaration de conflit d'intérêts
The authors declare no conflicts of interest.
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