Mid-Infrared Trace Gas Sensor Technology Based on Intracavity Quartz-Enhanced Photoacoustic Spectroscopy

Wojtas, Jacek; Gluszek, Aleksander; Hudzikowski, Arkadiusz; Tittel, Frank K.

doi:http://dx.doi.org/10.3390/s17030513

Name:: sensors-17-00513.pdf
Size:: 1.096Mb
Format:: PDF

View/Open

Author

Wojtas, Jacek

Gluszek, Aleksander

Hudzikowski, Arkadiusz

Tittel, Frank K.

Date

2017

Citation

Wojtas, Jacek, Gluszek, Aleksander, Hudzikowski, Arkadiusz, et al.. "Mid-Infrared Trace Gas Sensor Technology Based on Intracavity Quartz-Enhanced Photoacoustic Spectroscopy." Sensors, 17, no. 3 (2017) MDPI: http://dx.doi.org/10.3390/s17030513.

Published Version

http://dx.doi.org/10.3390/s17030513

Abstract

The application of compact inexpensive trace gas sensor technology to a mid-infrared nitric oxide (NO) detectoion using intracavity quartz-enhanced photoacoustic spectroscopy (I-QEPAS) is reported. A minimum detection limit of 4.8 ppbv within a 30 ms integration time was demonstrated by using a room-temperature, continuous-wave, distributed-feedback quantum cascade laser (QCL) emitting at 5.263 µm (1900.08 cm−1) and a new compact design of a high-finesse bow-tie optical cavity with an integrated resonant quartz tuning fork (QTF). The optimum configuration of the bow-tie cavity was simulated using custom software. Measurements were performed with a wavelength modulation scheme (WM) using a 2f detection procedure.

Keyword

laser absorption spectroscopy; bow-tie cavity; I-QEPAS; intracavity quartz-enhanced photoacoustic spectroscopy; mid-infrared trace gas sensors

Type

Journal article

Publisher

MDPI

Except where otherwise noted, this item's license is described as This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.