High-resolution phase-contrast wave-front sensors based on phase spatial light modulators and micromirror/liquid-crystal arrays are introduced. Wave-front sensor performance is analyzed for atmospheric-turbulence-induced phase distortions described by the Kolmogorov and the Andrews models. A high-resolution phase-contrast wave-front sensor (nonlinear Zernike filter) based on an optically controlled liquid-crystal phase spatial light modulator is experimentally demonstrated. The results demonstrate high-resolution visualization of dynamically changing phase distortions within the sensor time response of ~10 ms.
© 2001 Optical Society of America
(010.1080) Atmospheric and oceanic optics : Active or adaptive optics
(010.7350) Atmospheric and oceanic optics : Wave-front sensing
(070.2580) Fourier optics and signal processing : Paraxial wave optics
(070.4340) Fourier optics and signal processing : Nonlinear optical signal processing
(120.5050) Instrumentation, measurement, and metrology : Phase measurement
Mikhail A. Vorontsov, Eric W. Justh, and Leonid A. Beresnev, "Adaptive optics with advanced phase-contrast techniques. I. High-resolution wave-front sensing," J. Opt. Soc. Am. A 18, 1289-1299 (2001)