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dc.contributor.authorFacchin, Morgan
dc.contributor.authorDholakia, Kishan
dc.contributor.authorBruce, Graham D.
dc.identifier.citationFacchin , M , Dholakia , K & Bruce , G D 2021 , ' Wavelength sensitivity of the speckle patterns produced by an integrating sphere ' , Journal of Physics: Photonics , vol. 3 , no. 2 , 035005 .
dc.identifier.otherPURE: 273330012
dc.identifier.otherPURE UUID: 3cf520c4-fbc6-411f-a80f-9d378ac84df3
dc.identifier.otherWOS: 000679097900001
dc.identifier.otherORCID: /0000-0003-3403-0614/work/98196870
dc.identifier.otherScopus: 85112447876
dc.descriptionFunding: Leverhulme Trust (RPG-2017-197) and the UK Engineering and Physical Sciences Research Council (EP/P030017/1).en
dc.description.abstractSpeckle metrology is a powerful tool in the measurement of wavelength and spectra. Recently, speckle produced by multiple reflections inside an integrating sphere has been proposed and showed high performance. However, to our knowledge, a complete characterisation of speckle sensitivity to wavelength in that geometry has not been performed to date. In this work, we derive a general model predicting the variation in a speckle pattern as a result of a generic transformation. Applying this to a shift in the incident wavelength, we show that the speckle sensitivity is mainly governed by the radius and surface reflectivity of the sphere. We show that integrating spheres offer sensitivity four orders of magnitude above that of multimode fibres of a similar size, and discuss analogies with the transmission profile of a Fabry–Pérot interferometer.
dc.relation.ispartofJournal of Physics: Photonicsen
dc.rightsCopyright © 2021 The Author(s). Published by IOP Publishing Ltd. Original content from this work may be used under the terms of the Creative Commons Attribution 4.0 license. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.en
dc.subjectSpeckle patternsen
dc.subjectIntegrating sphereen
dc.subjectQC Physicsen
dc.titleWavelength sensitivity of the speckle patterns produced by an integrating sphereen
dc.typeJournal articleen
dc.description.versionPublisher PDFen
dc.contributor.institutionUniversity of St Andrews.School of Physics and Astronomyen
dc.contributor.institutionUniversity of St Andrews.Sir James Mackenzie Institute for Early Diagnosisen
dc.contributor.institutionUniversity of St Andrews.Centre for Biophotonicsen
dc.contributor.institutionUniversity of St Andrews.Biomedical Sciences Research Complexen
dc.description.statusPeer revieweden

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