Abstract

Recently, there has been great interest in both the properties of diffuse photon density waves, and their potential as non-invasive probes of the medium in which they travel.¹ Investigators have studied the scattering,² interference,³ refraction,⁴ reradiation and diffraction⁵ of these waves in piecewise homogeneous media. In this paper, we attempt to characterize a spatial distribution of inhomogeneities using diffuse photon density waves. We will review the formalism for a homogeneous medium, and then perturb the system by adding inhomogeneities. Finally, we will present the results of both computer simulations and experiments performed on biological models.

© 1994 Optical Society of America