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Optical Absorption Spectrometry using Laser Amplitude Modulation

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Chow, Jong; Wade, Andrew; Mow-Lowry, C; Rabeling, David; Littler, Ian; McClelland, David; Gray, Malcolm B

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We present a new technique for cavity enhanced optical absorption spectrometry, employing a radio-frequency amplitude modulated laser to interrogate an optical cavity. It is capable of sensing molecular absorption at the fundamental laser shot noise limit, and is able to perform quantum noise limited gas sensing at atmospheric pressure. We implement this technique, for the first time, in a free space cavity, and demonstrate that the demodulated error signal can be used to measure losses in a...[Show more]

dc.contributor.authorChow, Jong
dc.contributor.authorWade, Andrew
dc.contributor.authorMow-Lowry, C
dc.contributor.authorRabeling, David
dc.contributor.authorLittler, Ian
dc.contributor.authorMcClelland, David
dc.contributor.authorGray, Malcolm B
dc.coverage.spatialChristchurch New Zealand
dc.date.accessioned2015-12-10T22:32:29Z
dc.date.createdOctober 25-28 2009
dc.identifier.isbn9781424453351
dc.identifier.urihttp://hdl.handle.net/1885/55784
dc.description.abstractWe present a new technique for cavity enhanced optical absorption spectrometry, employing a radio-frequency amplitude modulated laser to interrogate an optical cavity. It is capable of sensing molecular absorption at the fundamental laser shot noise limit, and is able to perform quantum noise limited gas sensing at atmospheric pressure. We implement this technique, for the first time, in a free space cavity, and demonstrate that the demodulated error signal can be used to measure losses in a resonator.
dc.publisherInstitute of Electrical and Electronics Engineers (IEEE Inc)
dc.relation.ispartofseriesIEEE Conference on Sensors 2009
dc.sourceIEEE Sensors 2009
dc.source.urihttp://www.ieee-sensors2009.org/
dc.subjectKeywords: Amplitude-modulated laser; Error signal; Free space; Gas sensing; Laser shots; Molecular absorption; Noise limit; Optical absorption; Optical cavities; Radio frequencies; Amplitude modulation; Atmospheric pressure; Gas absorption; Light absorption; Sensor
dc.titleOptical Absorption Spectrometry using Laser Amplitude Modulation
dc.typeConference paper
local.description.notesImported from ARIES
local.description.refereedYes
dc.date.issued2009
local.identifier.absfor020601 - Degenerate Quantum Gases and Atom Optics
local.identifier.absfor020105 - General Relativity and Gravitational Waves
local.identifier.ariespublicationU9912193xPUB339
local.type.statusPublished Version
local.contributor.affiliationChow, Jong , College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationWade, Andrew, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationMow-Lowry, C, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationRabeling, David, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationLittler, Ian, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationMcClelland, David, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationGray, Malcolm B, National Measurement Institute
local.description.embargo2037-12-31
local.bibliographicCitation.startpage1979
local.bibliographicCitation.lastpage1983
local.identifier.doi10.1109/ICSENS.2009.5398318
dc.date.updated2016-02-24T12:15:22Z
local.identifier.scopusID2-s2.0-77951142195
CollectionsANU Research Publications

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