The method consists of measuring the perturbation provoked by a small volume of the diffusive medium on light propagating through a medium of known optical properties. The absorption and the reduced scattering coefficients of the medium are retrieved from multidistance continuous-wave measurements of transmittance. The inversion procedure is based on the solution of the diffusion equation obtained with a perturbative approach. The method has been validated with Monte Carlo results. Examples of experimental results are reported.
© 2002 Optical Society of America
(160.4760) Materials : Optical properties
(170.5280) Medical optics and biotechnology : Photon migration
(170.6510) Medical optics and biotechnology : Spectroscopy, tissue diagnostics
(290.1990) Scattering : Diffusion
(290.7050) Scattering : Turbid media
Giovanni Zaccanti, Fabrizio Martelli, and Samuele Del Bianco, "Method to Measure the Optical Properties of Small Volumes of Diffusive Media," Appl. Opt. 41, 7317-7324 (2002)