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Optical cavity enhanced real-time absorption spectroscopy of CO₂ using laser amplitude modulation

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dc.contributor.authorDong, Jiahao
dc.contributor.authorLam, Timothy T.-Y.
dc.contributor.authorGray, Malcolm B.
dc.contributor.authorWarrington, Richard B
dc.contributor.authorRoberts, Edward H.
dc.contributor.authorShaddock, Daniel A.
dc.contributor.authorMcClelland, David E.
dc.contributor.authorChow, Jong H.
dc.date.accessioned2015-12-17T03:27:44Z
dc.date.available2015-12-17T03:27:44Z
dc.date.issued2014-08-05
dc.date.updated2016-02-24T11:56:59Z
dc.description.abstractWe present a spectrometer based on the cavity enhanced amplitude modulated laser absorption spectroscopy (CEAMLAS) technique for measuring molecular gas absorption. This CEAMLAS spectrometer accurately measured a CO₂ absorption line at 1572.992 nm with effectively 100% measurement duty cycle. It achieved an absorption sensitivity of 5.2 × 10⁻⁹ Hz⁻¹∕² using a linear Fabry-Perot cavity with a modest finesse of ≈1000. We also used the spectrometer to perform preliminary measurements of the ¹³C/¹²C isotopic ratio in CO₂, yielding an isotopic signature δ ¹³C of −83±9‰ for our CO₂ sample.
dc.description.sponsorshipThis research was funded by the Australian Research Council under the Project ID: LP100200604 and DE130101361.en_AU
dc.identifier.issn0003-6951en_AU
dc.identifier.urihttp://hdl.handle.net/1885/95084
dc.publisherAmerican Institute of Physics (AIP)
dc.relationhttp://purl.org/au-research/grants/arc/LP100200604
dc.relationhttp://purl.org/au-research/grants/arc/DE130101361
dc.rightshttp://www.sherpa.ac.uk/romeo/issn/0003-6951..."Publishers version/PDF may be used on author's personal website, institutional website or institutional repository" from SHERPA/RoMEO site (as at 17/12/15). Copyright 2014 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Applied Physics Letters and may be found at https://doi.org/10.1063/1.4892535
dc.sourceApplied Physics Letters
dc.titleOptical cavity enhanced real-time absorption spectroscopy of CO₂ using laser amplitude modulation
dc.typeJournal article
local.bibliographicCitation.issue5en_AU
local.bibliographicCitation.startpage053505en_AU
local.contributor.affiliationDong, Jiahao (Jarrod), College of Physical and Mathematical Sciences, CPMS Research School of Physics and Engineering, RSPE Administration, The Australian National Universityen_AU
local.contributor.affiliationLam, Timothy, College of Physical and Mathematical Sciences, CPMS Research School of Physics and Engineering, Department of Quantum Science, The Australian National Universityen_AU
local.contributor.affiliationGray, Malcolm B, National Measurement Institute, Australiaen_AU
local.contributor.affiliationWarrington, Richard B, National Measurement Institute, Australiaen_AU
local.contributor.affiliationRoberts, Edward, Australian Scientific Instruments, Australiaen_AU
local.contributor.affiliationShaddock, Daniel, College of Physical and Mathematical Sciences, CPMS Research School of Physics and Engineering, Department of Quantum Science, The Australian National Universityen_AU
local.contributor.affiliationMcClelland, David, College of Physical and Mathematical Sciences, CPMS Research School of Physics and Engineering, Department of Quantum Science, The Australian National Universityen_AU
local.contributor.affiliationChow, Jong , College of Physical and Mathematical Sciences, CPMS Research School of Physics and Engineering, Department of Quantum Science, The Australian National Universityen_AU
local.contributor.authoremailj.dong@anu.edu.auen_AU
local.contributor.authoremailtimothy.lam@anu.edu.auen_AU
local.contributor.authoruidu4652549en_AU
local.description.notesImported from ARIESen_AU
local.identifier.absfor090000en_AU
local.identifier.absseo970102en_AU
local.identifier.ariespublicationU9212960xPUB149en_AU
local.identifier.citationvolume105en_AU
local.identifier.doi10.1063/1.4892535en_AU
local.identifier.scopusID2-s2.0-84905561307
local.identifier.thomsonID000341153000093
local.identifier.uidSubmittedByu3488905en_AU
local.publisher.urlhttps://www.aip.org/en_AU
local.type.statusPublished Versionen_AU

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