Quartz-enhanced photoacoustic spectroscopy for CO detection in SF6 decomposition

Andrea Zifarelli; Pietro Patimisco; Stefano dello Russo; Angelo Sampaolo; Marilena Giglio; Bo Sun; Hongpeng Wu; Lei Dong; Vincenzo Spagnolo

doi:10.1117/12.2577619

5 March 2021 Quartz-enhanced photoacoustic spectroscopy for CO detection in SF₆ decomposition

Andrea Zifarelli, Pietro Patimisco, Stefano dello Russo, Angelo Sampaolo, Marilena Giglio, Bo Sun, Hongpeng Wu, Lei Dong, Vincenzo Spagnolo

Author Affiliations +

Proceedings Volume 11693, Photonic Instrumentation Engineering VIII; 116930H (2021) https://doi.org/10.1117/12.2577619
Event: SPIE OPTO, 2021, Online Only

Abstract

We report on a highly sensitive and selective optical sensor for detection of carbon monoxide (CO) in a sulfur hexafluoride (SF₆) gas matrix by using quartz-enhanced photoacoustic spectroscopy (QEPAS) technique. The sensor uses a mid-infrared quantum cascade laser with central wavelength at 4.61 μm as light source and a spectrophone consisting of a novel 8 kHz T-shaped quartz tuning fork with grooved prongs coupled with a pair of resonator tubes for photoacoustic detection. A minimum detection limit of 10 ppb at 10 s of signal integration time was achieved.

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Andrea Zifarelli, Pietro Patimisco, Stefano dello Russo, Angelo Sampaolo, Marilena Giglio, Bo Sun, Hongpeng Wu, Lei Dong, and Vincenzo Spagnolo "Quartz-enhanced photoacoustic spectroscopy for CO detection in SF₆ decomposition", Proc. SPIE 11693, Photonic Instrumentation Engineering VIII, 116930H (5 March 2021); https://doi.org/10.1117/12.2577619

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