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Proceedings Paper

Adaptive optics wavefront corrector using addressable liquid-crystal retarders: II
Author(s): Domenico Bonaccini; Guido Brusa; Simone Esposito; Piero Salinari; Paolo Stefanini; Valdemaro Biliotti
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Paper 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.

Paper Details

Date Published: 13 January 1992
PDF: 11 pages
Proc. SPIE 1543, Active and Adaptive Optical Components, (13 January 1992); doi: 10.1117/12.51176
Show Author Affiliations
Domenico Bonaccini, Arcetri Astrophysical Observatory (Italy)
Guido Brusa, Arcetri Astrophysical Observatory (Italy)
Simone Esposito, Arcetri Astrophysical Observatory (Italy)
Piero Salinari, Arcetri Astrophysical Observatory (Italy)
Paolo Stefanini, Arcetri Astrophysical Observatory (Italy)
Valdemaro Biliotti, Arcetri Astrophysical Observatory (Italy)

Published in SPIE Proceedings Vol. 1543:
Active and Adaptive Optical Components
Mark A. Ealey, Editor(s)

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