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Nonlinear estimation of ring-down time for a Fabry-Perot optical cavity

kallapur, Abhijit; Boyson, Toby K.; Petersen, Ian; Harb, Charles

Description

This paper discusses the application of a discrete-time extended Kalman filter (EKF) to the problem of estimating the decay time constant for a Fabry-Perot optical cavity for cavity ring-down spectroscopy (CRDS). The data for the estimation process is obtained from a CRDS experimental setup in terms of the light intensity at the output of the cavity. The cavity is held in lock with the input laser frequency by controlling the distance between the mirrors within the cavity by means of a...[Show more]

dc.contributor.authorkallapur, Abhijit
dc.contributor.authorBoyson, Toby K.
dc.contributor.authorPetersen, Ian
dc.contributor.authorHarb, Charles
dc.date.accessioned2018-11-29T22:54:47Z
dc.date.available2018-11-29T22:54:47Z
dc.identifier.issn1094-4087
dc.identifier.urihttp://hdl.handle.net/1885/152915
dc.description.abstractThis paper discusses the application of a discrete-time extended Kalman filter (EKF) to the problem of estimating the decay time constant for a Fabry-Perot optical cavity for cavity ring-down spectroscopy (CRDS). The data for the estimation process is obtained from a CRDS experimental setup in terms of the light intensity at the output of the cavity. The cavity is held in lock with the input laser frequency by controlling the distance between the mirrors within the cavity by means of a proportional-integral (PI) controller. The cavity is purged with nitrogen and placed under vacuum before chopping the incident light at 25KHz and recording the light intensity at its output. In spite of beginning the EKF estimation process with uncertainties in the initial value for the decay time constant, its estimates converge well within a small neighborhood of the expected value for the decay time constant of the cavity within a few ring-down cycles. Also, the EKF estimation results for the decay time constant are compared to those obtained using the Levenberg-Marquardt estimation scheme.
dc.format.mimetypeapplication/pdf
dc.publisherOptical Society of America
dc.sourceOptics Express
dc.titleNonlinear estimation of ring-down time for a Fabry-Perot optical cavity
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume19
dc.date.issued2011
local.identifier.absfor090602 - Control Systems, Robotics and Automation
local.identifier.ariespublicationu5357342xPUB111
local.type.statusPublished Version
local.contributor.affiliationkallapur, Abhijit, University of New South Wales
local.contributor.affiliationBoyson, Toby K., The University of New South Wales
local.contributor.affiliationPetersen, Ian, College of Engineering and Computer Science, ANU
local.contributor.affiliationHarb, Charles, University of New South Wales, ADFA
local.bibliographicCitation.issue7
local.bibliographicCitation.startpage6385
local.bibliographicCitation.lastpage6394
local.identifier.doi10.1364/OE.19.006385
local.identifier.absseo970109 - Expanding Knowledge in Engineering
dc.date.updated2018-11-29T08:02:24Z
local.identifier.scopusID2-s2.0-79953196167
local.identifier.thomsonID000288852700071
dcterms.accessRightsOpen Access
CollectionsANU Research Publications

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