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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 36, Iss. 19 — Jul. 1, 1997
  • pp: 4600–4612

Photon migration through a turbid slab described by a model based on diffusion approximation. II. Comparison with Monte Carlo results

Fabrizio Martelli, Daniele Contini, Adriana Taddeucci, and Giovanni Zaccanti  »View Author Affiliations


Applied Optics, Vol. 36, Issue 19, pp. 4600-4612 (1997)
http://dx.doi.org/10.1364/AO.36.004600


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Abstract

In our companion paper we presented a model to describe photon migration through a diffusing slab. The model, developed for a homogeneous slab, is based on the diffusion approximation and is able to take into account reflection at the boundaries resulting from the refractive index mismatch. In this paper the predictions of the model are compared with solutions of the radiative transfer equation obtained by Monte Carlo simulations in order to determine the applicability limits of the approximated theory in different physical conditions. A fitting procedure, carried out with the optical properties as fitting parameters, is used to check the application of the model to the inverse problem. The results show that significant errors can be made if the effect of the refractive index mismatch is not properly taken into account. Errors are more important when measurements of transmittance are used. The effects of using a receiver with a limited angular field of view and the angular distribution of the radiation that emerges from the slab have also been investigated.

© 1997 Optical Society of America

History
Original Manuscript: April 15, 1996
Revised Manuscript: November 25, 1996
Published: July 1, 1997

Citation
Fabrizio Martelli, Daniele Contini, Adriana Taddeucci, and Giovanni Zaccanti, "Photon migration through a turbid slab described by a model based on diffusion approximation. II. Comparison with Monte Carlo results," Appl. Opt. 36, 4600-4612 (1997)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-36-19-4600

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