Piezo-enhanced acoustic detection module for mid-infrared trace gas sensing using a grooved quartz tuning fork

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dc.citation.firstpage35267en_US
dc.citation.issueNumber24en_US
dc.citation.journalTitleOptics Expressen_US
dc.citation.lastpage35278en_US
dc.citation.volumeNumber27en_US
dc.contributor.authorLi, Shangzhien_US
dc.contributor.authorLi, Shangzhien_US
dc.contributor.authorWu, Hongpengen_US
dc.contributor.authorWu, Hongpengen_US
dc.contributor.authorCui, Ruyueen_US
dc.contributor.authorCui, Ruyueen_US
dc.contributor.authorSampaolo, Angeloen_US
dc.contributor.authorPatimisco, Pietroen_US
dc.contributor.authorSpagnolo, Vincenzoen_US
dc.contributor.authorSpagnolo, Vincenzoen_US
dc.contributor.authorSpagnolo, Vincenzoen_US
dc.contributor.authorTittel, Frank K.en_US
dc.contributor.authorDong, Leien_US
dc.contributor.authorDong, Leien_US
dc.date.accessioned2021-10-19T15:35:28Zen_US
dc.date.available2021-10-19T15:35:28Zen_US
dc.date.issued2019en_US
dc.description.abstractA grooved quartz tuning fork (QTF) with a prong spacing of 800 µm for QEPAS application is reported. The prongs spacing is large enough to facilitate optical alignments when a degraded laser beam is used for QEPAS-based trace gas sensors. The grooved QTF has a resonance frequency of 15.2 kHz at atmospheric pressure and is characterized by four rectangular grooves carved on the QTF prong surfaces. With a grooved-prong, the electrical resistance R of the QTF is reduced resulting in an enhanced piezoelectric signal, while the Q factor is not affected, remaining as high as 15000 at atmospheric pressure. The geometric parameters of the acoustic micro resonators (AmRs) for on-beam QEPAS were optimized to match the grooved QTF, and a signal-to-noise gain factor of ∼ 30 was obtained with an optimum configuration. The performance of the QEPAS-based sensor was demonstrated exploiting an interband cascade laser (ICL) for CH4 detection and a 1σ normalized noise equivalent absorption (NNEA) coefficient of 4.1×10−9 cm−1 W/√Hz was obtained at atmospheric pressure.en_US
dc.identifier.citationLi, Shangzhi, Li, Shangzhi, Wu, Hongpeng, et al.. "Piezo-enhanced acoustic detection module for mid-infrared trace gas sensing using a grooved quartz tuning fork." <i>Optics Express,</i> 27, no. 24 (2019) Optica Publishing Group: 35267-35278. https://doi.org/10.1364/OE.27.035267.en_US
dc.identifier.digitaloe-27-24-35267en_US
dc.identifier.doihttps://doi.org/10.1364/OE.27.035267en_US
dc.identifier.urihttps://hdl.handle.net/1911/111572en_US
dc.language.isoengen_US
dc.publisherOptica Publishing Groupen_US
dc.rightsPublished under the terms of the OSA Open Access Publishing Agreementen_US
dc.rights.urihttps://www.osapublishing.org/library/license_v1.cfmen_US
dc.titlePiezo-enhanced acoustic detection module for mid-infrared trace gas sensing using a grooved quartz tuning forken_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
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