Cantilever-enhanced Photoacoustic Detector for Light-absorbing Aerosols

Juho Karhu; Juho Karhu; Joel Kuula; Aki Virkkula; Hilkka Timonen; Markku Vainio; Markku Vainio; Tuomas Hieta

doi:10.1364/LACSEA.2022.LW4D.5

Optical Sensors and Sensing Congress 2022 (AIS, LACSEA, Sensors, ES)
Technical Digest Series (Optica Publishing Group, 2022),
paper LW4D.5
•https://doi.org/10.1364/LACSEA.2022.LW4D.5

Cantilever-enhanced Photoacoustic Detector for Light-absorbing Aerosols

Juho Karhu, Joel Kuula, Aki Virkkula, Hilkka Timonen, Markku Vainio, and Tuomas Hieta

Laser Applications to Chemical, Security and Environmental Analysis 2022

Vancouver, British Columbia Canada
11–15 July 2022
ISBN: 978-1-957171-10-4

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Photo-Acoustic Diagnostics (LW4D)

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J. Karhu, J. Kuula, A. Virkkula, H. Timonen, M. Vainio, and T. Hieta, "Cantilever-enhanced Photoacoustic Detector for Light-absorbing Aerosols," in Optical Sensors and Sensing Congress 2022 (AIS, LACSEA, Sensors, ES), Technical Digest Series (Optica Publishing Group, 2022), paper LW4D.5.

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Abstract

We present here the first application of cantilever-enhanced photoacoustic spectroscopy for aerosol absorption measurements. A noise equivalent absorption of 1.3x10^-10 cm^-1 (one standard deviation) is reached with 20 s sampling time.

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