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3 March 2022 Quartz-enhanced photoacoustic spectroscopy employing a Vernier-effect distributed feedback-quantum cascade laser for multiple analytes detection
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Proceedings Volume 12021, Novel In-Plane Semiconductor Lasers XXI; 120210E (2022) https://doi.org/10.1117/12.2607866
Event: SPIE OPTO, 2022, San Francisco, California, United States
Abstract
Here we report on the multi-gas detection of carbon monoxide (CO), nitrous oxide (N2O), carbon dioxide (CO2), and water vapor (H2O) by using a quartz-enhanced photoacoustic spectroscopy (QEPAS) sensor exploiting a Vernier effect-based quantum cascade laser as excitation source. The device emission wavelengths ranged from 2100 cm-1 to 2250 cm-1. The achieved minimum detection limits were 6 ppb, 7 ppb, and 71 ppm fr CO, N2O, and CO2, respectively, at 100 ms of integration time. Finally, QEPAS sensor performances were tested retrieving the concentrations of the target gases within laboratory air.
Conference Presentation
© (2022) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Andrea Zifarelli, Raffaele De Palo, Pietro Patimisco, Marilena Giglio, Angelo Sampaolo, Stéphane Blaser, Tobias Gresch, Olivier Landry, Antoine Müller, and Vincenzo Spagnolo "Quartz-enhanced photoacoustic spectroscopy employing a Vernier-effect distributed feedback-quantum cascade laser for multiple analytes detection", Proc. SPIE 12021, Novel In-Plane Semiconductor Lasers XXI, 120210E (3 March 2022); https://doi.org/10.1117/12.2607866
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KEYWORDS
Carbon monoxide

Sensors

Quantum cascade lasers

Absorption

Calibration

Photoacoustic spectroscopy

Laser sources

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