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Real-time optical aberration correction with a ferroelectric liquid-crystal spatial light modulator

Philip M. Birch, James Gourlay, Gordon D. Love, and Alan Purvis

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Abstract

Real-time correction of an optically aberrated wave front by use of a 10 × 10 ferroelectric liquid-crystal spatial light modulator as the correction device and a point-diffraction interferometer as the wave-front sensor is demonstrated. This type of interferometer requires no reference arm and so can be used, in theory, in an astronomical adaptive-optics system. We discuss some of the unusual features of the point-diffraction interferometer for wave-front sensing.

© 1998 Optical Society of America

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