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Phase contrast techniques for wavefront sensing and calibration in adaptive optics
2003
Astronomical Adaptive Optics Systems and Applications
The wavefront sensor is the most critical component of an adaptive optics (AO) system. Most astronomical systems use one of a small number of alternatives, notably the Shack-Hartmann or the curvature sensor; these are sensitive to the first and second derivative of the wavefront phase, respectively. In this paper, we explore a novel adaptation of the phase-contrast techmque developed for microscopy by Zemke to measure phase directly, and show that it is potentially useful in astronomical
doi:10.1117/12.507245
fatcat:mcavoh6urfcoxmlpp64aw2r744