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31 January 2020 A compact cantilever-based photoacoustic sensor for trace-gas detection
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Abstract
We describe the development and the first characterization of a compact trace-gas sensor based on cantilever photoacoustic spectroscopy (CEPAS). The sensor was characterized in order to find the optimal operating parameters (pressure, molecule absorption line and laser modulated frequency). N2O was selected as test molecule. A quality factor of 200 at 10 mbar of cell pressure were determined. Furthermore, the first test measurements showed a minimum detection level of hundreds of ppb with integration time of 30 ms.
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Mario Siciliani de Cumis, Inaki Lopez Garcia, Mariaconcetta Canino, Pablo Cancio Pastor, Filippo Bonafè, Alberto Roncaglia, Simone Borri, and Paolo De Natale "A compact cantilever-based photoacoustic sensor for trace-gas detection", Proc. SPIE 11288, Quantum Sensing and Nano Electronics and Photonics XVII, 112882E (31 January 2020); https://doi.org/10.1117/12.2545824
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