Compact and sensitive mid-infrared all-fiber quartz-enhanced photoacoustic spectroscopy sensor for carbon monoxide detection

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dc.citation.firstpage9302en_US
dc.citation.issueNumber6en_US
dc.citation.journalTitleOptics Expressen_US
dc.citation.lastpage9312en_US
dc.citation.volumeNumber27en_US
dc.contributor.authorMa, Yufeien_US
dc.contributor.authorTong, Yaoen_US
dc.contributor.authorHe, Yingen_US
dc.contributor.authorJin, Xingangen_US
dc.contributor.authorTittel, Frank K.en_US
dc.date.accessioned2019-12-12T17:25:37Zen_US
dc.date.available2019-12-12T17:25:37Zen_US
dc.date.issued2019en_US
dc.description.abstractA compact and sensitive quartz-enhanced photoacoustic spectroscopy (QEPAS) based sensor for carbon monoxide (CO) detection was demonstrated by using a mid-infrared all-fiber structure as well as a 3D-printed acoustic detection module. An all-fiber configuration has advantages of easier optical alignment, lower insertion loss, improvement in system stability, reduction in sensor size and lower cost. The 3D-printed acoustic detection module was introduced to match the mid-infrared all-fiber structure and further decrease the sensor volume, which resulted in a small size of 3.5 cm3 and a weight of 5 grams. A 2.33 μm distributed feedback fiber-coupled diode laser was used as the laser excitation source. A custom quartz tuning fork (QTF) with a small-gap of 200 μm was used as the acoustic wave transducer in order to improve the signal level of the QEPAS sensor. An acoustic micro resonator was utilized as the acoustic wave enhancer. The gas pressure and laser wavelength modulation depth were optimized, respectively. Water vapor was used to accelerate the vibrational-translational relaxation rate of the targeted CO molecule. Finally, a minimum detection limit (MDL) of 4.2 part per million (ppm) was achieved, corresponding to a normalized noise equivalent absorption (NNEA) coefficient of 7.4 × 10−9 cm−1W/√Hz. An Allan deviation analysis was used to evaluate the long-term stability of the reported CO-QEPAS sensor system. With an integration time of 150 s, the MDL was improved to be 1.3 ppm.en_US
dc.identifier.citationMa, Yufei, Tong, Yao, He, Ying, et al.. "Compact and sensitive mid-infrared all-fiber quartz-enhanced photoacoustic spectroscopy sensor for carbon monoxide detection." <i>Optics Express,</i> 27, no. 6 (2019) Optical Society of America: 9302-9312. https://doi.org/10.1364/OE.27.009302.en_US
dc.identifier.digitaloe-27-6-9302en_US
dc.identifier.doihttps://doi.org/10.1364/OE.27.009302en_US
dc.identifier.urihttps://hdl.handle.net/1911/107885en_US
dc.language.isoengen_US
dc.publisherOptical Society of Americaen_US
dc.rights© 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreementen_US
dc.rights.urihttps://www.osapublishing.org/library/license_v1.cfm#VOR-OAen_US
dc.titleCompact and sensitive mid-infrared all-fiber quartz-enhanced photoacoustic spectroscopy sensor for carbon monoxide detectionen_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
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