Operation of phase-diverse adaptive-optics with extended scenes

Matthew W. Warmuth; Stuart W. Parker; Aaron J. Wilson; Kurt W. Gleichman; Richard G. Paxman; Brian J. Thelen; Ryan J. Murphy; Jason D. Hunt; Joel W. LeBlanc

doi:10.1117/12.795391

26 August 2008 Operation of phase-diverse adaptive-optics with extended scenes

Matthew W. Warmuth, Stuart W. Parker, Aaron J. Wilson, Kurt W. Gleichman, Richard G. Paxman, Brian J. Thelen, Ryan J. Murphy, Jason D. Hunt, Joel W. LeBlanc

Author Affiliations +

Proceedings Volume 7093, Advanced Wavefront Control: Methods, Devices, and Applications VI; 709307 (2008) https://doi.org/10.1117/12.795391
Event: Optical Engineering + Applications, 2008, San Diego, California, United States

Abstract

Previously, we demonstrated useful and novel features of the General Dynamics QuickStar adaptive-optics testbed utilizing Phase Diversity (PD) as the wavefront sensor operating on a point object. Point objects are relatively easy to produce in the laboratory and simplify the calibration procedure. However, for some applications, natural or artificial beacons may not be readily available and a wavefront sensor that operates on extended scenes is required. Accordingly, the QuickStar testbed has been augmented to allow PD to operate on natural three-dimensional solar-illuminated scenes external to the QuickStar laboratory. In addition, a computationally efficient chip-selection strategy has been developed that allows PD to operate on chips with favorable scene content. Finally, a covariance matrix has been developed that provides an accuracy estimate for PD wavefront-parameter estimates. The covariance can be used by the controls algorithm to properly weight the correction applied according to the accuracy of the estimates. These advances suggest that PD is a sufficiently mature technology for use in adaptive optics systems that require operation with extended scenes.

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Matthew W. Warmuth, Stuart W. Parker, Aaron J. Wilson, Kurt W. Gleichman, Richard G. Paxman, Brian J. Thelen, Ryan J. Murphy, Jason D. Hunt, and Joel W. LeBlanc "Operation of phase-diverse adaptive-optics with extended scenes", Proc. SPIE 7093, Advanced Wavefront Control: Methods, Devices, and Applications VI, 709307 (26 August 2008); https://doi.org/10.1117/12.795391

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