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Conferences > CLEO_SI > 2021 > SM4N > SM4N.7

QEPAS Sensor Based on the Tracking of the Photoacoustic Induced Frequency Shift of a Tuning Fork Maintained in Self-Sustained Oscillation by Electrical Excitation

M. Duquesnoy, R. Lévy, J-M. Melkonian, G. Aoust, M. Raybaut, and A. Godard

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Abstract

Oscillator frequency shift induced by the photoacoustic force on a closed-loop electrically excited quartz tuning fork is exploited to carry out QEPAS measurement. We report recent improvements of this new method for background-free gas sensing.

© 2021 The Author(s)

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