Piezo-enhanced acoustic detection module for mid-infrared trace gas sensing using a grooved quartz tuning fork
dc.citation.firstpage | 35267 | |
dc.citation.issueNumber | 24 | |
dc.citation.journalTitle | Optics Express | |
dc.citation.lastpage | 35278 | |
dc.citation.volumeNumber | 27 | |
dc.contributor.author | Li, Shangzhi | |
dc.contributor.author | Li, Shangzhi | |
dc.contributor.author | Wu, Hongpeng | |
dc.contributor.author | Wu, Hongpeng | |
dc.contributor.author | Cui, Ruyue | |
dc.contributor.author | Cui, Ruyue | |
dc.contributor.author | Sampaolo, Angelo | |
dc.contributor.author | Patimisco, Pietro | |
dc.contributor.author | Spagnolo, Vincenzo | |
dc.contributor.author | Spagnolo, Vincenzo | |
dc.contributor.author | Spagnolo, Vincenzo | |
dc.contributor.author | Tittel, Frank K. | |
dc.contributor.author | Dong, Lei | |
dc.contributor.author | Dong, Lei | |
dc.date.accessioned | 2021-10-19T15:35:28Z | |
dc.date.available | 2021-10-19T15:35:28Z | |
dc.date.issued | 2019 | |
dc.description.abstract | A 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. | |
dc.identifier.citation | Li, 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. | |
dc.identifier.digital | oe-27-24-35267 | |
dc.identifier.doi | https://doi.org/10.1364/OE.27.035267 | |
dc.identifier.uri | https://hdl.handle.net/1911/111572 | |
dc.language.iso | eng | |
dc.publisher | Optica Publishing Group | |
dc.rights | Published under the terms of the OSA Open Access Publishing Agreement | |
dc.rights.uri | https://www.osapublishing.org/library/license_v1.cfm | |
dc.title | Piezo-enhanced acoustic detection module for mid-infrared trace gas sensing using a grooved quartz tuning fork | |
dc.type | Journal article | |
dc.type.dcmi | Text | |
dc.type.publication | publisher version |
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