Woofer-tweeter adaptive optics in very strong turbulence using a magnetic-liquid deformable mirror

Denis Brousseau; Jean-Pierre Véran; Simon Thibault; Ermanno F. Borra; Simon. F.-Boivin

doi:10.1117/12.925174

13 September 2012 Woofer-tweeter adaptive optics in very strong turbulence using a magnetic-liquid deformable mirror

Denis Brousseau, Jean-Pierre Véran, Simon Thibault, Ermanno F. Borra, Simon. F.-Boivin

Proceedings Volume 8447, Adaptive Optics Systems III; 84473Z (2012) https://doi.org/10.1117/12.925174
Event: SPIE Astronomical Telescopes + Instrumentation, 2012, Amsterdam, Netherlands

Abstract

We present progress towards the development of a woofer-tweeter adaptive optics (AO) system using the first 37 actuators of a 91-actuator magnetic-liquid deformable mirror (MLDM) and a magnetic 97-actuator DM from ALPAO. The MLDM, which has both very large single-actuator and inter-actuator strokes, but a low bandwidth, is used as woofer, whereas the high bandwidth and lower stroke ALPAO DM is used as tweeter. The ALPAO DM should improve the bandwidth of the MLDM while the MLDM will allow correction of strong aberrations.

Citation Download Citation

Denis Brousseau, Jean-Pierre Véran, Simon Thibault, Ermanno F. Borra, and Simon. F.-Boivin "Woofer-tweeter adaptive optics in very strong turbulence using a magnetic-liquid deformable mirror", Proc. SPIE 8447, Adaptive Optics Systems III, 84473Z (13 September 2012); https://doi.org/10.1117/12.925174

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