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dc.contributor.authorYe, Weilin
Zheng, Chuantao
Tittel, Frank K.
Sanchez, Nancy P.
Gluszek, Aleksander K.
Hudzikowski, Arkadiusz J.
Lou, Minhan
Dong, Lei
Griffin, Robert J.
dc.date.accessioned 2017-02-08T16:34:32Z
dc.date.available 2017-02-08T16:34:32Z
dc.date.issued 2017
dc.identifier.citation Ye, 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." Proceedings of SPIE, 10111, (2017) SPIE: http://dx.doi.org/10.1117/12.2250941.
dc.identifier.urihttps://hdl.handle.net/1911/93859
dc.description.abstract A 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.
dc.language.iso eng
dc.publisher SPIE
dc.rights Article 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.
dc.title A compact mid-infrared dual-gas CH4/C2H6 sensor using a single interband cascade laser and custom electronics
dc.type Journal article
dc.citation.journalTitle Proceedings of SPIE
dc.subject.keywordmid-infrared
interband cascade laser
dual-gas detection
wavelength modulation
dc.citation.volumeNumber 10111
dc.type.dcmi Text
dc.identifier.doihttp://dx.doi.org/10.1117/12.2250941
dc.type.publication publisher version
dc.citation.articleNumber 1011134


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