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Method to measure the optical properties of small volumes of diffusive media
Giovanni Zaccanti1, Fabrizio Martelli, Samuele Del Bianco
1Dipartimento di Fisica dell'Universté degli Studi di Firenze and the Istituto Nazionale per la Fisica della Materia, Via G. Sansone 1, 50019 Sesto Fiorentino, Firenze, Italy.
Abstract:
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.