Abstract
Dynamic light-scattering spectroscopy is used to study Brownian motion within highly scattering samples. The fluctuations of the light field that is backscattered by a suspension of polystyrene microspheres are measured as power spectra by use of low-coherence interferometry to obtain path-length resolution. The data are modeled as the sum of contributions to the detected light weighted by a Poisson probability for the number of events that each component has experienced. By analyzing the broadening of the power spectra as a function of the path length for various sizes of particles, we determine the contribution of multiple scattering to the detected signal as a function of scattering anisotropy.
© 2001 Optical Society of America
Full Article | PDF ArticleMore Like This
Anna L. Petoukhova, Wiendelt Steenbergen, and Frits F. M. de Mul
Opt. Lett. 26(19) 1492-1494 (2001)
Gabriel Popescu and Aristide Dogariu
Opt. Lett. 26(8) 551-553 (2001)
Gabriel Popescu and Aristide Dogariu
Appl. Opt. 40(24) 4215-4221 (2001)