Characterization of deformable mirrors for high-order adaptive optics systems

Details Characterization of deformable mirrors for high-order adaptive optics systems Characterization of deformable mirrors for high-order adaptive optics systems

Oct 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004spie.5490.1572s&link_type=abstract

Advancements in Adaptive Optics. Edited by Domenico B. Calia, Brent L. Ellerbroek, and Roberto Ragazzoni. Proceedings of the SPI

Physics

Optics

1

Scientific paper

Deformable mirrors with more than 1000 actuators are currently being developed for eXtreme AO applications, either for ELTs, high order Adaptive Optics correction in the visible light, or combination of both. The large number of actuators, the high frequency at which these DMs are to be used and further advancement in schemes for AO control, requiring a growing degree of knowledge of the AO system for efficient correction, sets special requirements on the characterization of the static and dynamic behavior of the DM. In the light of CHEOPS, an extreme-AO Planet Finder project, we have characterized a Xinetics deformable mirrors with 349 actuators. This mirror serves as a proxy for the characterization of a >1200 actuator DM of a similar type, which will be implemented in CHEOPS. In this paper we present the results of this characterization. Special attention was paid to mirror properties like hysteresis, non-linearity, temperature dependence and influence function.

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