Simultaneous dual-gas QEPAS detection based on a fundamental and overtone combined vibration of quartz tuning fork

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dc.citation.articleNumber121104en_US
dc.citation.issueNumber12en_US
dc.citation.journalTitleApplied Physics Lettersen_US
dc.citation.volumeNumber110en_US
dc.contributor.authorWu, Hongpengen_US
dc.contributor.authorYin, Xukunen_US
dc.contributor.authorDong, Leien_US
dc.contributor.authorPei, Kailongen_US
dc.contributor.authorSampaolo, Angeloen_US
dc.contributor.authorPatimisco, Pietroen_US
dc.contributor.authorZheng, Huadanen_US
dc.contributor.authorMa, Weiguangen_US
dc.contributor.authorZhang, Leien_US
dc.contributor.authorYin, Wangbaoen_US
dc.contributor.authorXiao, Liantuanen_US
dc.contributor.authorSpagnolo, Vincenzoen_US
dc.contributor.authorJia, Suotangen_US
dc.contributor.authorTittel, Frank K.en_US
dc.date.accessioned2017-03-28T21:32:36Zen_US
dc.date.available2017-03-28T21:32:36Zen_US
dc.date.issued2017en_US
dc.description.abstractA dual-gas quartz-enhanced photoacoustic spectroscopy (QEPAS) sensor system based on a frequency division multiplexing technique of a quartz tuning fork (QTF) was developed and experimentally demonstrated. Two beams from two independently modulated lasers are focused at two different positions between the QTF prongs to excite both the QTF fundamental and 1st overtone flexural modes simultaneously. The 2f-wavelength modulation technique is employed by applying two sinusoidal dithers, whose frequencies are equal to a half of the QTF fundamental and 1st overtone frequencies, respectively, to the currents of two excitation lasers. The resonance frequency difference between two flexural modes ensures that the correlated photoacoustic signals generated by different target gases do not interfere with each other. The proposed QEPAS methodology realizes a continuous real-time dual-gas monitoring with a simple setup and small sensor size compared with previous multi-gas QEPAS sensors.en_US
dc.identifier.citationWu, Hongpeng, Yin, Xukun, Dong, Lei, et al.. "Simultaneous dual-gas QEPAS detection based on a fundamental and overtone combined vibration of quartz tuning fork." <i>Applied Physics Letters,</i> 110, no. 12 (2017) AIP Publishing LLC: http://dx.doi.org/10.1063/1.4979085.en_US
dc.identifier.doihttp://dx.doi.org/10.1063/1.4979085en_US
dc.identifier.urihttps://hdl.handle.net/1911/94042en_US
dc.language.isoengen_US
dc.publisherAIP Publishing LLCen_US
dc.rightsArticle is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.en_US
dc.titleSimultaneous dual-gas QEPAS detection based on a fundamental and overtone combined vibration of quartz tuning forken_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
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