Simplified wavefront sensor for adaptive mirror control

Details Simplified wavefront sensor for adaptive mirror control Simplified wavefront sensor for adaptive mirror control

Sep 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989spie.1114..105g&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 Control, Adaptive Optics, Optical Filters, Wave Front Deformation, Actuators, Mirrors, Real Time Operation, Signal To Noise Ratios, Telescopes

Scientific paper

Optical-filtering methods which transform wavefront distortions in intensity modulations are presently noted to be applicable, on the basis of an economical amount of computational effort, to the control of adaptive optical systems. Some of these filtering methods allow differential measurements to be conducted and furnish a means to the elimination of anomalous speckle intensity modulations. The wavefront-sensor types discussed employ (1) the classic Foucault-knife method, (2) the 'soft knife-edge' method of spatial filtering, (3) an amplitude-grating filter, and (4) a phase-grating filter.

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