Ppbv-Level Ethane Detection Using Quartz-Enhanced Photoacoustic Spectroscopy with a Continuous-Wave, Room Temperature Interband Cascade Laser

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dc.citation.articleNumber723
dc.citation.issueNumber3
dc.citation.journalTitleSensors
dc.citation.volumeNumber18
dc.contributor.authorLi, Chunguang
dc.contributor.authorDong, Lei
dc.contributor.authorZheng, Chuantao
dc.contributor.authorLin, Jun
dc.contributor.authorWang, Yiding
dc.contributor.authorTittel, Frank K.
dc.date.accessioned2018-07-11T20:57:33Z
dc.date.available2018-07-11T20:57:33Z
dc.date.issued2018
dc.description.abstractA ppbv-level quartz-enhanced photoacoustic spectroscopy (QEPAS)-based ethane (C2H6) sensor was demonstrated by using a 3.3 μm continuous-wave (CW), distributed feedback (DFB) interband cascade laser (ICL). The ICL was employed for targeting a strong C2H6 absorption line located at 2996.88 cm−1 in its fundamental absorption band. Wavelength modulation spectroscopy (WMS) combined with the second harmonic (2f) detection technique was utilized to increase the signal-to-noise ratio (SNR) and simplify data acquisition and processing. Gas pressure and laser frequency modulation depth were optimized to be 100 Torr and 0.106 cm−1, respectively, for maximizing the 2f signal amplitude. Performance of the QEPAS sensor was evaluated using specially prepared C2H6 samples. A detection limit of 11 parts per billion in volume (ppbv) was obtained with a 1-s integration time based on an Allan-Werle variance analysis, and the detection precision can be further improved to ~1.5 ppbv by increasing the integration time up to 230 s.
dc.identifier.citationLi, Chunguang, Dong, Lei, Zheng, Chuantao, et al.. "Ppbv-Level Ethane Detection Using Quartz-Enhanced Photoacoustic Spectroscopy with a Continuous-Wave, Room Temperature Interband Cascade Laser." <i>Sensors,</i> 18, no. 3 (2018) MDPI: https://doi.org/10.3390/s18030723.
dc.identifier.doihttps://doi.org/10.3390/s18030723
dc.identifier.urihttps://hdl.handle.net/1911/102410
dc.language.isoeng
dc.publisherMDPI
dc.rightsThis article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subject.keywordlaser sensors
dc.subject.keywordinfrared spectroscopy
dc.subject.keywordsemiconductor quantum cascade lasers
dc.titlePpbv-Level Ethane Detection Using Quartz-Enhanced Photoacoustic Spectroscopy with a Continuous-Wave, Room Temperature Interband Cascade Laser
dc.typeJournal article
dc.type.dcmiText
dc.type.publicationpublisher version
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