A method for improving the accuracy of the optical diffusion theory for a multilayer scattering medium is presented. An infinitesimally narrow incident light beam is replaced by multiple isotropic point sources of different strengths that are placed in the scattering medium along the incident beam. The multiple sources are then used to develop a multilayer diffusion theory. Diffuse reflectance is then computed using the multilayer diffusion theory and compared with accurate data computed by the Monte Carlo method. This multisource method is found to be significantly more accurate than the previous single-source method.
© 2007 Optical Society of America
Original Manuscript: December 12, 2006
Revised Manuscript: April 24, 2007
Manuscript Accepted: May 17, 2007
Published: August 9, 2007
Vol. 2, Iss. 9 Virtual Journal for Biomedical Optics
Joseph L. Hollmann and Lihong V. Wang, "Multiple-source optical diffusion approximation for a multilayer scattering medium," Appl. Opt. 46, 6004-6009 (2007)