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Highly sensitive methane detection using a mid-infrared interband cascade laser and an anti-resonant hollow-core fiber

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dc.abstract.enFor over a decade hollow-core fibers have been used in optical gas sensors in the role of gas cells. However, very few examples of actual real-life applications of those sensors have been demonstrated so far. In this paper, we present a highly-sensitive hollow-core fiber based methane sensor. Mid-infrared distributed feedback interband cascade laser operating near 3.27 µm is used to detect gas inside anti-resonant hollow-core fiber. R(3) line near 3057.71 cm−1 located in ν3 band of methane is targeted. Compact, lens-free optical setup with an all-silica negative curvature hollow-core fiber as the gas cell is demonstrated. Using wavelength modulation spectroscopy and 7.5-m-long fiber the detection limit as low as 1.54 ppbv (at 20 s) is obtained. The demonstrated system is applied for a week-long continuous monitoring of ambient methane and water vapor in atmospheric air at ground level. Diurnal cycles in methane concentrations are observed, what proves the sensor’s usability in environmental monitoring.
dc.affiliationUniwersytet Warszawski
dc.contributor.authorPYSZ, DARIUSZ
dc.contributor.authorNikodem, Michal
dc.contributor.authorKlimczak, Mariusz
dc.contributor.authorBUCZYŃSKI, RYSZARD
dc.contributor.authorStępniewski, Grzegorz
dc.contributor.authorGomółka, Grzegorz
dc.date.accessioned2024-01-25T03:11:43Z
dc.date.available2024-01-25T03:11:43Z
dc.date.issued2023
dc.description.financePublikacja bezkosztowa
dc.description.number3
dc.description.volume31
dc.identifier.doi10.1364/OE.479963
dc.identifier.issn1094-4087
dc.identifier.urihttps://repozytorium.uw.edu.pl//handle/item/108485
dc.identifier.weblinkhttps://opg.optica.org/viewmedia.cfm?URI=oe-31-3-3685&seq=0
dc.languageeng
dc.pbn.affiliationphysical sciences
dc.relation.ispartofOptics Express
dc.relation.pages3685
dc.rightsClosedAccess
dc.sciencecloudnosend
dc.titleHighly sensitive methane detection using a mid-infrared interband cascade laser and an anti-resonant hollow-core fiber
dc.typeReviewArticle
dspace.entity.typePublication