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Lasers, Sources and Related Photonic Devices, 2010
Performance of quartz-enhanced photoacoustic spectroscopy and conventional photoacoustic spectroscopy based detectors applied to trace gas sensing was compared. Nitrogen with 10 ppmv of acetylene and a diode laser accessing 6529.17 cm−1 absorption line were used.
Lei Dong +3 more
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Performance of quartz-enhanced photoacoustic spectroscopy and conventional photoacoustic spectroscopy based detectors applied to trace gas sensing was compared. Nitrogen with 10 ppmv of acetylene and a diode laser accessing 6529.17 cm−1 absorption line were used.
Lei Dong +3 more
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Off-plane quartz-enhanced photoacoustic spectroscopy
Optics LettersIn this work, we developed off-plane quartz-enhanced photoacoustic spectroscopy (OP-QEPAS). In the OP-QEPAS the light beam went neither through the prong spacing of the quartz tuning fork (QTF) nor in the QTF plane. The light beam is in parallel with the QTF with an optimal distance, resulting in low background noise. A radial-cavity (RC) resonator was
Huijian Luo +11 more
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Quartz enhanced photoacoustic spectroscopy for the detection of acetone
Sixth International Conference on Optical and Photonic Engineering (icOPEN 2018), 2018Quartz enhanced photoacoustic spectroscopy (QEPAS) is an extremely effective tool for the detection and quantification of trace gases, which offers advantages of fast response, high sensitivity and high resolution. In this paper, a gas sensor based on quartz-enhanced photoacoustic detection and an external cavity quantum cascade laser (ECQCL) was ...
Jinsong Li +3 more
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Quartz Enhanced Photoacoustic Spectroscopy: Today and Beyond
Lasers, Sources and Related Photonic Devices, 2010Current theoretical understanding and practical applications of the trace gas sensing technique called quartz enhanced photoacoustic spectroscopy (QEPAS) will be presented. Work in progress and planned QEPAS developments will be discussed.
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Quartz-Enhanced Photoacoustic Spectroscopy for Environmental Monitoring
Air pollution is a critical global issue, contributing to over 4.2 million deaths annually due to stroke, heart disease, lung cancer, and chronic respiratory diseases. It also poses significant economic and social challenges, including increased healthcare costs and reduced productivity. The need for real-time, high-resolution air quality monitoring isPietro Patimisco +5 more
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Double resonant quartz-enhanced photoacoustic spectroscopy with a spherical resonator
Optics LettersIn this Letter, double resonant quartz-enhanced photoacoustic spectroscopy (QEPAS) with a spherical resonator is proposed for the first time to our knowledge. This spherical resonator, which functions both as an acoustic resonator and a gas chamber, facilitates efficient sound wave coupling between the resonator and the quartz ...
Chu Zhang +3 more
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Tapered acoustic resonator-based quartz-enhanced photoacoustic spectroscopy
Optics LettersIn this paper, a quartz-enhanced photoacoustic spectroscopy (QEPAS) sensor based on a novel tapered acoustic resonator (TAR) was proposed for the first time, to our knowledge. The proposed structure not only enhances acoustic signals but also substantially reduces the demands on beam quality and optical alignment, leading to ...
Chenzhao Sang +5 more
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Research Progress of Quartz-enhanced Photoacoustic Spectroscopy
Chinese Journal of Luminescence, 2017马欲飞 MA Yu-fei +4 more
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Recent Progress in Quartz-Enhanced Photoacoustic Spectroscopy
Chinese Journal of Lasers, 2018董磊 Dong Lei +8 more
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