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Optical sensing with photon density waves: investigation of model media

  • Investigations with frequency domain photon density waves allow elucidation of absorption and scattering properties of turbid media. The temporal and spatial propagation of intensity modulated light with frequencies up to more than 1 GHz can be described by the P1 approximation to the Boltzmann transport equation. In this study, we establish requirements for the appropriate choice of turbid model media and characterize mixtures of isosulfan blue as absorber and polystyrene beads as scatterer. For these model media, the independent determination of absorption and reduced scattering coefficients over large absorber and scatterer concentration ranges is demonstrated with a frequency domain photon density wave spectrometer employing intensity and phase measurements at various modulation frequencies.

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Author:Oliver Reich, Hans-Gerd LöhmannsröbenORCiDGND, Frank Schael
Series (Serial Number):Postprints der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe (paper 026)
Document Type:Postprint
Year of Completion:2003
Publishing Institution:Universität Potsdam
Release Date:2007/04/20
Source:Physical chemistry, chemical physics : PCCP ; a journal of European chemical societies. - ISSN 1463-9076. - 5 (2003), p. 5182 - 5187
Organizational units:Mathematisch-Naturwissenschaftliche Fakultät / Institut für Chemie
Extern / Extern
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 54 Chemie / 540 Chemie und zugeordnete Wissenschaften
Notes extern:
first published in:
Physical chemistry, chemical physics : PCCP ; a journal of European chemical societies. - ISSN 1463-9076. - 5 (2003), S. 5182 - 5187
doi: 10.1039/b308630e
Reproduced by permission of the PCCP Owner Societies