The concept of photon diffusion on the velocity sphere and the non-Euclidean diffusion equation (NED) are introduced to describe photon migration in highly forward-scattering random media. The NED covers the ballistic, transient, and developed diffusion modes of photon migration in random media. An approximate analytic solution to the NED is presented.
© 1996 Optical Society of America
A. Ya Polishchuk and R. R. Alfano, "Photon diffusion on the velocity sphere," Opt. Lett. 21, 916-918 (1996)