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Combined optical porosimetry and gas absorption spectroscopy in gas-filled porous media using diode-laser-based frequency domain photon migration
KTH, School of Information and Communication Technology (ICT), Centres, Zhejiang-KTH Joint Research Center of Photonics, JORCEP.
KTH, School of Information and Communication Technology (ICT), Centres, Zhejiang-KTH Joint Research Center of Photonics, JORCEP.
2012 (English)In: Optics Express, ISSN 1094-4087, E-ISSN 1094-4087, Vol. 20, no 15, 16942-16954 p.Article in journal (Refereed) Published
Abstract [en]

A combination method of frequency domain photon migration (FDPM) and gas in scattering media absorption spectroscopy (GASMAS) is used for assessment of the mean optical path length (MOPL) and the gas absorption in gas-filled porous media, respectively. Polystyrene (PS) foams, with extremely high physical porosity, are utilized as sample materials for proof-of-principle demonstration. The optical porosity, defined as the ratio between the path length through the pores and the path length through the medium, is evaluated in PS foam and found consistent with the measured physical porosity. The method was also utilized for the study of balsa and spruce wood samples.

Place, publisher, year, edition, pages
2012. Vol. 20, no 15, 16942-16954 p.
Keyword [en]
Combination method, Frequency domain photon migration, Mean optical path length, Path length, Porosimetry, Proof of principles, Scattering media, Spruce wood
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Identifiers
URN: urn:nbn:se:kth:diva-104263DOI: 10.1364/OE.20.016942ISI: 000307055800079OAI: oai:DiVA.org:kth-104263DiVA: diva2:565150
Funder
Swedish Research Council, 621-2011-4265
Note

QC 20121106

Available from: 2012-11-06 Created: 2012-10-31 Last updated: 2017-12-07Bibliographically approved

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Svanberg, SuneSomesfalean, Gabriel
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