The traditional diffusion theory, often used for isotropic sources, becomes inaccurate at short source-detector spacings and cannot be applied to media with large absorption or with small scattering strengths. We show that for any type of source anisotropy, a Green's-function-based procedure can remove these limitations. The accuracy of the new approach is examined through a comparison with the numerical solution to the radiative transfer equation.
© 2005 Optical Society of America
S. Menon, Q. Su, and R. Grobe, "Generalized diffusion solution for light scattering from anisotropic sources," Opt. Lett. 30, 1542-1544 (2005)