A theoretical expression for the covariance of the received intensity of a partially coherent laser speckle pattern after propagation through the turbulent atmosphere is developed. It is shown that the atmospheric perturbation on a partially coherent speckle pattern can be decomposed into a coherent term and an incoherent term. The dependence of contributions of these components on the level of turbulence, vacuum speckle-contrast ratio, and detector spacing is studied in detail and the results are compared with the available experimental data.
© 1992 Optical Society of America
V. S. Rao Gudimetla, J. Fred Holmes, M. E. Fossey, and P. A. Pincus, "Covariance of the received intensity of a partially coherent laser speckle pattern in the turbulent atmosphere," Appl. Opt. 31, 1286-1293 (1992)