Mid-infrared quartz-enhanced photoacoustic gas sensor with a continuously swept optical cavity

Qinxue Nie; Zhen Wang; Wei Ren

doi:10.1364/ES.2023.EM3E.3

Optica Sensing Congress 2023 (AIS, FTS, HISE, Sensors, ES)
Technical Digest Series (Optica Publishing Group, 2023),
paper EM3E.3
•https://doi.org/10.1364/ES.2023.EM3E.3

Mid-infrared quartz-enhanced photoacoustic gas sensor with a continuously swept optical cavity

Qinxue Nie, Zhen Wang, and Wei Ren

Optics and Photonics for Sensing the Environment 2023

Munich Germany
30 July–3 August 2023
ISBN: 978-1-957171-24-1

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Atmospheric Sensing (EM3E)

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Q. Nie, Z. Wang, and W. Ren, "Mid-infrared quartz-enhanced photoacoustic gas sensor with a continuously swept optical cavity," in Optica Sensing Congress 2023 (AIS, FTS, HISE, Sensors, ES), Technical Digest Series (Optica Publishing Group, 2023), paper EM3E.3.

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Abstract

We present an ultra-sensitive and high-resolution spectrometer based on the swept-cavity quartz-enhanced photoacoustic spectroscopy. A dual-feedback Pound-Drever-Hall locking method is developed for locking a quantum cascade laser to a continuously swept optical cavity.

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