21 July 2014 Recent results and future DMs for astronomy and for space applications at CILAS
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Abstract
We present recent experimental results obtained with CILAS deformable mirrors (DMs) or demonstration prototypes in solar and night-time astronomy (with ground-based telescopes) as well as observation of the Earth (with space telescopes). These important results have been reached thanks to CILAS technology range composed of monomorph and piezostack deformable mirrors, drivers and optical coatings. For instance, the monomorph technology, due to a simple architecture can offer a very good reliability for space applications. It can be used for closed or open loop correction of the primary mirror deformation (thermal and polishing aberrations, absence of gravity). It can also allow a real-time correction of wavefront aberrations introduced by the atmosphere up to relatively high spatial and temporal frequencies for ground-based telescopes. The piezostack technology is useful for very high order correction at high frequency and under relatively low operational temperature (down to -30°C), which is required for future Extremely Large Telescopes (ELTs). This wide range of applications is exposed through recent examples of DMs performances in operation and results obtained with breadboards, allowing promising DMs for future needs.
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Jean-Christophe Sinquin, Jean-Christophe Sinquin, Arnaud Bastard, Arnaud Bastard, Emmanuel Beaufort, Emmanuel Beaufort, Thomas Berkefeld, Thomas Berkefeld, Laurent Cadiergues, Laurent Cadiergues, Vincent Costes, Vincent Costes, Raphaël Cousty, Raphaël Cousty, Charles Dekhtiar, Charles Dekhtiar, Frédéric Di Gesu, Frédéric Di Gesu, Xavier Gilbert, Xavier Gilbert, Catherine Grèzes-Besset, Catherine Grèzes-Besset, Denis Groeninck, Denis Groeninck, Markus Hartung, Markus Hartung, Hélène Krol, Hélène Krol, Aurélien Moreau, Aurélien Moreau, Pierre Morin, Pierre Morin, Hubert Pagès, Hubert Pagès, Richard Palomo, Richard Palomo, Göran Scharmer, Göran Scharmer, Dirk Soltau, Dirk Soltau, Jean-Pierre Véran, Jean-Pierre Véran, } "Recent results and future DMs for astronomy and for space applications at CILAS", Proc. SPIE 9148, Adaptive Optics Systems IV, 91480G (21 July 2014); doi: 10.1117/12.2056287; https://doi.org/10.1117/12.2056287
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