New type of liquid crystal wavefront correctors

Alexander F. Naumov; Mikhail Yu. Loktev; Igor R. Guralnik; Gleb V. Vdovin

doi:10.1117/12.337557

20 January 1999 New type of liquid crystal wavefront correctors

Alexander F. Naumov, Mikhail Yu. Loktev, Igor R. Guralnik, Gleb V. Vdovin

Proceedings Volume 3688, 6th International Conference on Industrial Lasers and Laser Applications '98; (1999) https://doi.org/10.1117/12.337557
Event: 6th International Conference on Industrial Lasers and Laser Applications '98, 1998, Shatura, Moscow Region, Russian Federation

Abstract

A new type of phase liquid crystal modulators with distributed electrical parameters is proposed. These modulators make it feasible to use minimal number of electrodes to from a desirable phase shape. We devised methods of control and investigated the modal liquid crystal cylindrical and spherical lenses, and the multi-element wavefront corrector with controlled influence as well. The focusing by means of the adaptive lenses is presented. We demonstrate two approaches in optimal control. The first consists in computing the optimal control voltage through liquid crystal and lens parameters. The second consists in feedback use.

Citation Download Citation

Alexander F. Naumov, Mikhail Yu. Loktev, Igor R. Guralnik, and Gleb V. Vdovin "New type of liquid crystal wavefront correctors", Proc. SPIE 3688, 6th International Conference on Industrial Lasers and Laser Applications '98, (20 January 1999); https://doi.org/10.1117/12.337557

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