articleLight Science & ApplicationsMar 22, 2024GOLD OA

Quartz-enhanced multiheterodyne resonant photoacoustic spectroscopy

Shanxi University · State Key Laboratory of Quantum Optics and Quantum Optics Devices · +1 more institution

PubMed
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Abstract

Abstract The extension of dual-comb spectroscopy (DCS) to all wavelengths of light along with its ability to provide ultra-large dynamic range and ultra-high spectral resolution, renders it extremely useful for a diverse array of applications in physics, chemistry, atmospheric science, space science, as well as medical applications. In this work, we report on an innovative technique of quartz-enhanced multiheterodyne resonant photoacoustic spectroscopy (QEMR-PAS), in which the beat frequency response from a dual comb is frequency down-converted into the audio frequency domain. In this way, gas molecules act as an optical-acoustic converter through the photoacoustic effect, generating heterodyne sound waves.…

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