High-Power DFB Diode Laser-Based CO-QEPAS Sensor: Optimization and Performance

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dc.citation.articleNumber122en_US
dc.citation.issueNumber1en_US
dc.citation.journalTitleSensorsen_US
dc.citation.volumeNumber18en_US
dc.contributor.authorMa, Yufeien_US
dc.contributor.authorTong, Yaoen_US
dc.contributor.authorHe, Yingen_US
dc.contributor.authorYu, Xinen_US
dc.contributor.authorTittel, Frank K.en_US
dc.date.accessioned2018-07-11T18:51:13Zen_US
dc.date.available2018-07-11T18:51:13Zen_US
dc.date.issued2018en_US
dc.description.abstractA highly sensitive carbon monoxide (CO) trace gas sensor based on quartz-enhanced photoacoustic spectroscopy (QEPAS) was demonstrated. A high-power distributed feedback (DFB), continuous wave (CW) 2.33 μm diode laser with an 8.8 mW output power was used as the QEPAS excitation source. By optimizing the modulation depth and adding an optimum micro-resonator, compared to a bare quartz tuning fork (QTF), a 10-fold enhancement of the CO-QEPAS signal amplitude was achieved. When water vapor acting as a vibrational transfer catalyst was added to the target gas, the signal was further increased by a factor of ~7. A minimum detection limit (MDL) of 11.2 ppm and a calculated normalized noise equivalent absorption (NNEA) coefficient of 1.8 × 10−5 cm−1W/√Hz were obtained for the reported CO-QEPAS sensor.en_US
dc.identifier.citationMa, Yufei, Tong, Yao, He, Ying, et al.. "High-Power DFB Diode Laser-Based CO-QEPAS Sensor: Optimization and Performance." <i>Sensors,</i> 18, no. 1 (2018) MDPI: https://doi.org/10.3390/s18010122.en_US
dc.identifier.doihttps://doi.org/10.3390/s18010122en_US
dc.identifier.urihttps://hdl.handle.net/1911/102397en_US
dc.language.isoengen_US
dc.publisherMDPIen_US
dc.rightsThis 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 citeden_US
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/en_US
dc.subject.keywordQEPASen_US
dc.subject.keywordcarbon monoxideen_US
dc.subject.keywordhigh power diode laseren_US
dc.subject.keywordgas sensoren_US
dc.titleHigh-Power DFB Diode Laser-Based CO-QEPAS Sensor: Optimization and Performanceen_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
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