Double Acoustic Microresonator Quartz-enhanced Photoacoustic Spectroscopy
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Quartz-enhanced photoacoustic spectroscopy (QEPAS) based on double acoustic microresonators (AmRs) is developed and experimentally investigated. The double AmR spectrophone configuration exhibits a strong acoustic coupling between the AmR and the quartz tuning fork, which results in a ∼5 ms fast response time. Moreover, the double AmRs provide two independent detection channels that allow optical signal addition or cancellation from different optical wavelengths and facilitate rapid multigas sensing measurements, thereby avoiding laser beam combination.
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Chen X, Liu H, Hu M, Yao L, Xu Z, Deng H Sensors (Basel). 2022; 22(11).
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Shang Z, Li S, Li B, Wu H, Sampaolo A, Patimisco P Photoacoustics. 2022; 26:100363.
PMID: 35574186 PMC: 9096678. DOI: 10.1016/j.pacs.2022.100363.
Compact QEPAS humidity sensor in SF buffer gas for high-voltage gas power systems.
Yin X, Dong L, Wu H, Gao M, Zhang L, Zhang X Photoacoustics. 2021; 25:100319.
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Intrinsic Spectral Resolution Limitations of QEPAS Sensors for Fast and Broad Wavelength Tuning.
Christensen J, Hogstedt L, Friis S, Lai J, Chou M, Balslev-Harder D Sensors (Basel). 2020; 20(17).
PMID: 32825631 PMC: 7506663. DOI: 10.3390/s20174725.
Hu L, Zheng C, Zhang M, Yao D, Zheng J, Zhang Y Photoacoustics. 2020; 18:100174.
PMID: 32211294 PMC: 7082634. DOI: 10.1016/j.pacs.2020.100174.