Abstract

The statistics of the angle-of-arrival fluctuations are studied for the case of a laser beam reflected from a curved surface in a uniformly turbulent atmosphere. The variance for the direct beam and for the reflected beam and the covariance for the two beams are calculated for arbitrary divergence of the illumination and radius of curvature of the reflector. Experimental results support the conclusions that the reflected-beam angle-of-arrival fluctuations are very sensitive to small deviations from perfect collimation and that the correlation of the fluctuations in the direct and reflected beams is high.

© 1987 Optical Society of America

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