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dc.contributor.authorAndrews, Nicholas L. P.
dc.contributor.authorLitman, Jessica
dc.contributor.authorStroh, Daniel
dc.contributor.authorBarnes, Jack A.
dc.contributor.authorLoock, Hans-Peter
dc.date.accessioned2016-03-07T14:41:56Z
dc.date.available2016-03-07T14:41:56Z
dc.date.issued2016-03-07
dc.identifier.issn10.1016/j.yofte.2013.07.012
dc.identifier.issn1095-9912
dc.identifier.urihttp://hdl.handle.net/1974/14109
dc.description.abstractCavity ring-down spectroscopy is performed using a single-mode fibre loop as an optical cavity. The loop contains absorption cells for either liquids or gases, as well as an erbium-doped fibre amplifier. The fibre amplifier is gain-clamped using a second fibre-loop. Ring-down times can be tuned to permit several hundred roundtrips by adjusting the loss ratio between the two nested loops using a variable optical attenuator. Ring-down measurements were performed either in the time domain or using phase shift measurements. Acetylene gas was detected through a ro-vibrational absorption line of the ν1–ν3 combination band at 1532 nm at a limit of detection of 50 ppm. Liquid 1-octyne and 1-dodecyne were detected in a 1 pL volume at detection limits of ∼20% dilution in dodecane through their C–H stretch vibrational overtone transition.en_US
dc.language.isoenen_US
dc.subjectCavity Ring-Downen_US
dc.subjectAbsorption Spectroscopyen_US
dc.subjectFiber (fibre) Loopen_US
dc.subjectAcetylene Gas Detectionen_US
dc.titleNear Infrared Absorption Detection in Picolitre Liquid Volumes Using Fiber Loop Ring-Down Detectionen_US
dc.typejournal articleen_US


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