
Proceedings Paper
Recent improvements of high density magnetic deformable mirrors: faster, larger and strongerFormat | Member Price | Non-Member Price |
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Paper Abstract
The performances of high resolution magnetic deformable mirrors have been recently improved: the mechanical bandwidth has been increased to 2 kHz, and a fast stroboscopic Shack-Harman wavefront was used to measure a settling time as low as 400μs. Recent improvements in the substrate-thinning processes made possible the availability of large, high-quality membranes compatible with deformable mirrors. Prototype testing and simulations show that devices with up to 60x60 actuators are now possible. For open-loop operations, a novel feed-forward algorithm was developed to compensate for residual creeping and improve the DM stability to below10nm RMS over 6 hours.
Paper Details
Date Published: 7 August 2014
PDF: 8 pages
Proc. SPIE 9148, Adaptive Optics Systems IV, 914825 (7 August 2014); doi: 10.1117/12.2055872
Published in SPIE Proceedings Vol. 9148:
Adaptive Optics Systems IV
Enrico Marchetti; Laird M. Close; Jean-Pierre Véran, Editor(s)
PDF: 8 pages
Proc. SPIE 9148, Adaptive Optics Systems IV, 914825 (7 August 2014); doi: 10.1117/12.2055872
Show Author Affiliations
Julien Charton, ALPAO S.A.S. (France)
Urban Bitenc, Durham Univ. (United Kingdom)
Jean-Francois Curis, ALPAO S.A.S. (France)
Urban Bitenc, Durham Univ. (United Kingdom)
Jean-Francois Curis, ALPAO S.A.S. (France)
Sebastien Camet, ALPAO S.A.S. (France)
Romain Di Chiaro, ALPAO S.A.S. (France)
Rozenn Bougeard, ALPAO S.A.S. (France)
Romain Di Chiaro, ALPAO S.A.S. (France)
Rozenn Bougeard, ALPAO S.A.S. (France)
Published in SPIE Proceedings Vol. 9148:
Adaptive Optics Systems IV
Enrico Marchetti; Laird M. Close; Jean-Pierre Véran, Editor(s)
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