LIGHT-SCATTERING INTENSITY FLUCTUATIONS IN MICRODROPLETS CONTAINING INCLUSIONS

A prominent characteristic of the Light scattered from a microparticle containing inclusions is a fluctuation in the intensity that is due t o the changing positions of the inclusions with respect to each other and the host droplet. We calculate the magnitude of these fluctuations for a host sphere containing a single eccentrically located spherical inclusion and experimentally measure the fluctuation amplitudes for h ost spheres containing multiple inclusions. We find that, for sufficie ntly small single inclusions, the amplitude of the scattering fluctuat ions increases approximately linearly with the area of the inclusion. For multiple inclusions, the fluctuation amplitude increases with conc entration with an approximate power-law dependence. (C) 1997 Optical S ociety of America.