27 January 2017 Low power consumption quartz-enhanced photoacoustic gas sensor employing a quantum cascade laser in pulsed operation
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Abstract
We report here an analysis of the performance of a quartz-enhanced photoacoustic (QEPAS) system operating in a pulsed mode by employing a quantum cascade laser (QCL). The QEPAS system is based on a quartz tuning fork (QTF) having fundamental resonance frequency of 4.2 kHz and a first overtone resonance of 25.4 KHz. Water vapor was used as a target gas by selecting its absorption line falling at 1296.5 cm-1 with a line strength of 1.69⋅10-22 cm/molecule. The QEPAS signal was investigated, while varying the QCL duty-cycle from continuous wave operation, down to 5%, which corresponds to a laser power consumption of 0.17 mW and a pulse-width of 4 μs.
Conference Presentation
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Angelo Sampaolo, Angelo Sampaolo, Pietro Patimisco, Pietro Patimisco, Aleksander Gluszek, Aleksander Gluszek, Arkadiusz Hudzikowski, Arkadiusz Hudzikowski, Marilena Giglio, Marilena Giglio, Huadan Zheng, Huadan Zheng, Frank K. Tittel, Frank K. Tittel, Vincenzo Spagnolo, Vincenzo Spagnolo, } "Low power consumption quartz-enhanced photoacoustic gas sensor employing a quantum cascade laser in pulsed operation", Proc. SPIE 10111, Quantum Sensing and Nano Electronics and Photonics XIV, 101110C (27 January 2017); doi: 10.1117/12.2252326; https://doi.org/10.1117/12.2252326
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