Adaptive optics wavefront corrector using addressable liquid-crystal retarders: II

Domenico Bonaccini; Guido Brusa; Simone Esposito; Piero Salinari; Paolo Stefanini; Valdemaro Biliotti

doi:10.1117/12.51176

13 January 1992 Adaptive optics wavefront corrector using addressable liquid-crystal retarders II

Domenico Bonaccini, Guido Brusa, Simone Esposito, Piero Salinari, Paolo Stefanini, Valdemaro Biliotti

Proceedings Volume 1543, Active and Adaptive Optical Components; (1992) https://doi.org/10.1117/12.51176
Event: San Diego, '91, 1991, San Diego, CA, United States

Abstract

We present recent results of our investigations into the feasibility of a wavefront corrector for adaptive optics, using nematic liquid crystal material. In particular, we are aiming at a small, flexible adaptive optics module, to be located at the focal plane of existing and new-generation telescopes in order to improve imaging quality. We address some of the specific problems investigated, concerning the theoretical behavior of the LC corrector, its comparison with other state-of-the-art wavefront correctors, modal and zonal, the speed and slew rate of the actuators, and a real-time capacitive servo loop scheme controlling the actuator retardance.

Citation Download Citation

Domenico Bonaccini, Guido Brusa, Simone Esposito, Piero Salinari, Paolo Stefanini, and Valdemaro Biliotti "Adaptive optics wavefront corrector using addressable liquid-crystal retarders II", Proc. SPIE 1543, Active and Adaptive Optical Components, (13 January 1992); https://doi.org/10.1117/12.51176

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