In a previous paper, we considered a perturbation solution for propagation of the fourth-order coherence function in a random medium. In this paper, it is shown how under certain conditions this solution may be extended to treat the propagation problem when the field fluctuations need not be small. A differential equation governing the fourth-order coherence function is derived. A solution is obtained in the geometricoptics limit when the four points of the coherence function are distinct.
© 1969 Optical Society of America
M. J. BERAN and T. L. Ho, "Propagation of the Fourth-Order Coherence Function in a Random Medium (a Nonperturbative Formulation)," J. Opt. Soc. Am. 59, 1134-1137 (1969)