A compact mid-infrared dual-gas CH4/C2H6 sensor using a single interband cascade laser and custom electronics

dc.citation.articleNumber1011134en_US
dc.citation.journalTitleProceedings of SPIEen_US
dc.citation.volumeNumber10111en_US
dc.contributor.authorYe, Weilinen_US
dc.contributor.authorZheng, Chuantaoen_US
dc.contributor.authorTittel, Frank K.en_US
dc.contributor.authorSanchez, Nancy P.en_US
dc.contributor.authorGluszek, Aleksander K.en_US
dc.contributor.authorHudzikowski, Arkadiusz J.en_US
dc.contributor.authorLou, Minhanen_US
dc.contributor.authorDong, Leien_US
dc.contributor.authorGriffin, Robert J.en_US
dc.date.accessioned2017-02-08T16:34:32Zen_US
dc.date.available2017-02-08T16:34:32Zen_US
dc.date.issued2017en_US
dc.description.abstractA compact mid-infrared (MIR) dual-gas sensor system was demonstrated for simultaneous detection of methane (CH4) and ethane (C2H6) using a single continuous-wave (CW) interband cascade laser (ICL) based on tunable laser absorption spectroscopy (TDLAS) and wavelength modulation spectroscopy (WMS). Ultracompact custom electronics were developed, including a laser current driver, a temperature controller and a lock-in amplifier. These custom electronics reduce the size and weight of the sensor system as compared with a previous version based on commercial electronics. A multipass gas cell with an effective optical length of 54.6 m was employed to enhance the absorption signal. A 3337 nm ICL was capable of targeting a C2H6 absorption line at 2996.88 cm-1 and a CH4 line at 2999.06 cm-1. Dual-gas detection was realized by scanning both the CH4 and C2H6 absorption lines. Based on an Allan deviation analysis, the 1 σ minimum detection limit (MDL) was 17.4 ppbv for CH4 and 2.4 ppbv for C2H6 with an integration time of 4.3 s. TDLAS based sensor measurements for both indoor and outdoor mixing ratios of CH4 and C2H6 were conducted. The reported single ICL based dual-gas sensor system has the advantages of reduced size and cost without influencing the midinfrared sensor detection sensitivity, selectivity and reliability.en_US
dc.identifier.citationYe, Weilin, Zheng, Chuantao, Tittel, Frank K., et al.. "A compact mid-infrared dual-gas CH4/C2H6 sensor using a single interband cascade laser and custom electronics." <i>Proceedings of SPIE,</i> 10111, (2017) SPIE: http://dx.doi.org/10.1117/12.2250941.en_US
dc.identifier.doihttp://dx.doi.org/10.1117/12.2250941en_US
dc.identifier.urihttps://hdl.handle.net/1911/93859en_US
dc.language.isoengen_US
dc.publisherSPIEen_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.subject.keywordmid-infrareden_US
dc.subject.keywordinterband cascade laseren_US
dc.subject.keyworddual-gas detectionen_US
dc.subject.keywordwavelength modulationen_US
dc.titleA compact mid-infrared dual-gas CH4/C2H6 sensor using a single interband cascade laser and custom electronicsen_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
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