Near-infrared acetylene sensor system using off-axis integrated-cavity output spectroscopy and two measurement schemes

Simple item page
dc.citation.firstpage26205en_US
dc.citation.issueNumber20en_US
dc.citation.journalTitleOptics Expressen_US
dc.citation.lastpage26216en_US
dc.citation.volumeNumber26en_US
dc.contributor.authorZheng, Kaiyuanen_US
dc.contributor.authorZheng, Chuantaoen_US
dc.contributor.authorHe, Qixinen_US
dc.contributor.authorYao, Danen_US
dc.contributor.authorHu, Lienen_US
dc.contributor.authorZhang, Yuen_US
dc.contributor.authorWang, Yidingen_US
dc.contributor.authorTittel, Frank K.en_US
dc.date.accessioned2018-11-15T17:16:13Zen_US
dc.date.available2018-11-15T17:16:13Zen_US
dc.date.issued2018en_US
dc.description.abstractFor highly sensitive and accurate acetylene (C2H2) detection, a near-infrared (NIR) off-axis integrated-cavity output spectroscopy (OA-ICOS) sensor system based on an ultra-compact cage-based absorption cell was proposed. The absorption cell with dimensions of 10 cm × 8 cm × 6 cm realized a dense-pattern and an easily-aligned stable optical system. The OA-ICOS sensor system employed a 6cm-long optical cavity that was formed by two mirrors with a reflectivity of 99.35% and provided an effective absorption path length of ∼9.28 m. The performance of the C2H2 sensor system based on two measurement schemes, i.e. laser direct absorption spectroscopy (LDAS) and wavelength modulation spectroscopy (WMS) is reported. A NIR distributed feedback (DFB) laser was employed for targeting a C2H2 absorption line at 6523.88 cm−1. An Allan deviation analysis yielded a detection sensitivity of 760 parts-per-billion in volume (ppbv) for an averaging time of 304 s using the LDAS-based OA-ICOS. A detection sensitivity of 85 ppbv for an averaging time of 250 s was obtained using the WMS-based OA-ICOS, which was further improved by a factor of ~9 compared to the result obtained with the LDAS method. The proposed sensor system has the advantages of reduced size and cost with acceptable detection sensitivity, which is suitable for applications in trace gas sensing in harsh environments and weight-limited balloon-embedded observations.en_US
dc.identifier.citationZheng, Kaiyuan, Zheng, Chuantao, He, Qixin, et al.. "Near-infrared acetylene sensor system using off-axis integrated-cavity output spectroscopy and two measurement schemes." <i>Optics Express,</i> 26, no. 20 (2018) Optical Society of America: 26205-26216. https://doi.org/10.1364/OE.26.026205.en_US
dc.identifier.digitaloe-26-20-26205en_US
dc.identifier.doihttps://doi.org/10.1364/OE.26.026205en_US
dc.identifier.urihttps://hdl.handle.net/1911/103344en_US
dc.language.isoengen_US
dc.publisherOptical Society of Americaen_US
dc.rightsPublished under the terms of the OSA Open Access Publishing Agreement.en_US
dc.rights.urihttps://www.osapublishing.org/library/license_v1.cfm#VOR-OAen_US
dc.titleNear-infrared acetylene sensor system using off-axis integrated-cavity output spectroscopy and two measurement schemesen_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
oe-26-20-26205.pdf
Size:
3.13 MB
Format:
Adobe Portable Document Format
Download
Collections
Faculty Publications
ECE Publications