Journal
OPTICS LETTERS
Volume 46, Issue 10, Pages 2449-2452Publisher
OPTICAL SOC AMER
DOI: 10.1364/OL.423801
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Funding
- National Natural Science Foundation of China [61505041, 61875047, 62022032]
- Natural Science Foundation of Heilongjiang Province [YQ2019F006]
- Heilongjiang Provincial Postdoctoral Science Foundation [LBH-Q18052]
- Fundamental Research Funds for the Central Universities
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A novel single-quartz-enhanced dual spectroscopy trace gas sensor was developed, utilizing a quartz tuning fork to detect photoacoustic and photothermal signals simultaneously, improving detection performance and avoiding frequency mismatching issues in multi-sensor systems. The experimental results confirmed the successful addition of the signals in this sensor system.
A single-quartz-enhanced dual spectroscopy (S-QEDS) based trace gas sensor is reported for the first time, to the best of our knowledge. In S-QEDS, a quartz tuning fork (QTF) was utilized to detect the photoacoustic and photothermal signals simultaneously and added the two signals together. The S-QEDS technique not only improved the detection performance but also avoided the issue of resonant frequency mismatching of QTFs for the multi-QTFs-based sensor systems. Water vapor (H2O) was selected as the target gas to investigate the S-QEDS sensor performance. The photoacoustic, photothermal, and composited signals were measured, respectively, under the same conditions. The experimental results verified the ideal adding of the photoacoustic and photothermal signals by using a single QTF in this S-QEDS sensor system. (C) 2021 Optical Society of America
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