Optoelectronic Zernike filter for high-resolution wavefront analysis using phase only liquid crystal spatial light modulator

Gary W. Carhart; Mikhail A. Vorontsov; Eric W. Justh

doi:10.1117/12.407497

22 November 2000 Optoelectronic Zernike filter for high-resolution wavefront analysis using phase-only liquid crystal spatial light modulator

Gary W. Carhart, Mikhail A. Vorontsov, Eric W. Justh

Author Affiliations +

Proceedings Volume 4124, High-Resolution Wavefront Control: Methods, Devices, and Applications II; (2000) https://doi.org/10.1117/12.407497
Event: International Symposium on Optical Science and Technology, 2000, San Diego, CA, United States

Abstract

An opto-electronic technique for high-resolution wave-front phase imaging is presented and demonstrated experimentally. The technique is analogous to the conventional Zernike phase- contrast approach, but uses modern spatial light modulator technology to increase robustness and improve performance. Because they provide direct measurements of wave-front phase (rather than wave-front slope measurements, as in Shack- Hartmann sensors), robust phase-contrast sensors have potential applications in high-speed, high-resolution adaptive optic systems. Advantages of the opto-electronic approach over alternative advanced phase-contrast techniques (such as a related phase-contrast sensor which uses a liquid-crystal light valve exhibiting a Kerr-type optical response to perform Fourier filtering) are discussed. The SLM used for the experimental results is a 128 X 128-element pixilated phase-only liquid crystal spatial light modulator from Boulder Nonlinear Systems, Inc.

Citation Download Citation

Gary W. Carhart, Mikhail A. Vorontsov, and Eric W. Justh "Optoelectronic Zernike filter for high-resolution wavefront analysis using phase-only liquid crystal spatial light modulator", Proc. SPIE 4124, High-Resolution Wavefront Control: Methods, Devices, and Applications II, (22 November 2000); https://doi.org/10.1117/12.407497

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