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

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

Jan 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992spie.1543..133b&link_type=abstract

Proc. SPIE Vol. 1543, p. 133-143, Active and Adaptive Optical Components, Mark A. Ealey; Ed.

Physics

Optics

1

Scientific paper

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.

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