Papers Published

1. Wax, A; Yang, C; Dasari, RR; Feld, MS, Path-length-resolved dynamic light scattering: Modeling the transition from single to diffusive scattering, Applied Optics, vol. 40 no. 24 (August, 2001), pp. 4222-4227, The Optical Society [doi] .
   (last updated on 2023/06/01)

   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.

   Keywords:
   backscatter;Brownian motion;fluctuations;light interferometry;light scattering;particle size;polymer solutions;probability;spectral line breadth;suspensions;