Advanced Phase-Contrast Techniques for Wavefront Sensing and Adaptive Optics
Advanced Phase-Contrast Techniques for Wavefront Sensing and Adaptive Optics
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2001
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Abstract
High-resolution phase-contrast wavefront sensors based on optically addressed phase spatial light modulators and micro-mirror/LC arrays areintroduced. Wavefront sensor efficiency is analyzed for atmosphericturbulence-induced phase distortions described by the Kolmogorov and Andrews models. A nonlinear Zernike filter wavefront sensor based on anoptically addressed liquid crystal phase spatial light modulator isexperimentally demonstrated. The results demonstrate high-resolutionvisualization of dynamically changing phase distortions within the sensortime response of 10 msec.