Abstract

Nonlinear optical gating has enjoyed wide success over the years particularly in connection with time-resolved luminescence studies of semiconductors.¹ In this paper we describe a new class of gating experiment which we have developed and applied to study particle diffusion in colloids at high concentration. In contrast to previous work, the new scheme exploits the phase fluctuations of gated photons and enables the experimenter to access properties of dense colloidal suspensions that multiply scatter light.

© 1990 Optical Society of America