title: Adaptive phase-distortion correction based on parallel gradient-descent optimization.
abstract: We describe an adaptive wave-front control technique based on a parallel stochastic perturbation method that can be applied to a general class of adaptive-optical system. The efficiency of this approach is analyzed numerically and experimentally by use of a white-light adaptive-imaging system with an extended source. To create and compensate for static phase distortions, we use 127-element liquid-crystal phase modulators. Results demonstrate that adaptive wave-front correction by a parallel-perturbation technique can significantly improve image quality.
authors.forename: M A
authors.initials: MA
authors.lastname: Vorontsov
authors.forename: G W
authors.initials: GW
authors.lastname: Carhart
authors.forename: J C
authors.initials: JC
authors.lastname: Ricklin