Decorrelation of tip/tilt information is of fundamental importance in imaging and laser propagation through the atmosphere without a cooperative beacon on the target. Applications include laser-guide-star adaptive optics, tracking of fast-moving objects and multi-beam laser communications. We compute gradient-tilt anisoplanatism for the case of spherical-wave propagation. The model is to be validated against experiments over a 110-m path.

© 2015 Optical Society of America

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