Experiments on wavefront control using wavefront sensing and hill-climbing techniques

Details Experiments on wavefront control using wavefront sensing and hill-climbing techniques Experiments on wavefront control using wavefront sensing and hill-climbing techniques

Sep 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989spie.1114...65j&link_type=abstract

IN: Active telescope systems; Proceedings of the Meeting, Orlando, FL, Mar. 28-31, 1989 (A90-30852 12-74). Bellingham, WA, Socie

Physics

Optics

Adaptive Optics, Atmospheric Correction, Error Correcting Devices, Wave Front Deformation, Atmospheric Turbulence, Electronic Control, Feedback, Mirrors, Speckle Interferometry

Scientific paper

Two adaptive optical systems have been experimentally investigated: a 19-element deformable mirror with serial hill-climbing control, for the correction of static wavefront errors, and a 21-element deformable mirror/real-time wavefront sensing system employing a shearing interferometer, for the correction of dynamic errors. The experiments conducted are of two types: laboratory corrections of simulated disturbances, and atmospheric propagation compensations over a horizontal path of 340 m. The reduction of speckle patterns to the Airy diffraction disk is demonstrated for these experiments.

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