Statistical properties of triple-random-modulated dynamic speckles (TRMDS) are studied theoretically and experimentally. The spatiotemporal correlation function of the intensity fluctuation of the speckles is obtained; it is a Gaussian distribution. The correlation time is inversely proportional to the velocity of the moving diffuser. The average radius of TRMDS is smaller than that of single-random-modulated dynamic speckles (SRMDS). The correlation time of SRMDS is approximately 70–80 times longer than that of TRMDS. The theoretical results are consistent with the experimental results.
© 1999 Optical Society of America
(030.1640) Coherence and statistical optics : Coherence
(030.6140) Coherence and statistical optics : Speckle
(030.6600) Coherence and statistical optics : Statistical optics
(290.4210) Scattering : Multiple scattering
(290.5880) Scattering : Scattering, rough surfaces
Hong Sun, Ling-Yun Zhang, Ying Liu, and Shining Ma, "Statistical properties of triple-random-modulated dynamic speckles," J. Opt. Soc. Am. A 16, 1387-1394 (1999)