Quartz-enhanced photoacoustic spectroscopy (QEPAS) offers efficient gas detection, compactness, robustness, fast time response and affordability, exploiting quart tuning forks (QTFs) as resonant optoacoustic transducers. Recently, new geometries for the QTFs were proposed and implemented in QEPAS sensors, opening the way to novel sensing configurations providing excellent results in detection sensitivity. Recent results obtained by exploiting custom QTFs in QEPAS trace-gas sensors operating in the near-IR and mid-IR ranges will be reviewed.
Vincenzo Spagnolo, Pietro Patimisco, Angelo Sampaolo, Marilena Giglio, Lei Dong, and Frank K. Tittel, "Recent advances in quartz-enhanced photoacoustic sensing," Proc. SPIE 10540, Quantum Sensing and Nano Electronics and Photonics XV, 105402O (Presented at SPIE OPTO: February 02, 2018; Published: 26 January 2018); https://doi.org/10.1117/12.2284162.
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