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Proceedings Paper • Open Access

Novel unimorph deformable mirror for space applications
Author(s): Sven Verpoort; Peter Rausch; Ulrich Wittrock

Paper Abstract

We have developed a new type of unimorph deformable mirror, designed to correct for low-order Zernike modes. The mirror has a clear optical aperture of 50 mm combined with large peak-to-valley Zernike amplitudes of up to 35 μm. Newly developed fabrication processes allow the use of prefabricated super-polished and coated glass substrates. The mirror’s unique features suggest the use in several astronomical applications like the precompensation of atmospheric aberrations seen by laser beacons and the use in woofer-tweeter systems. Additionally, the design enables an efficient correction of the inevitable wavefront error imposed by the floppy structure of primary mirrors in future large space-based telescopes. We have modeled the mirror by using analytical as well as finite element models. We will present design, key features and manufacturing steps of the deformable mirror.

Paper Details

Date Published: 20 November 2017
PDF: 8 pages
Proc. SPIE 10564, International Conference on Space Optics — ICSO 2012, 1056414 (20 November 2017); doi: 10.1117/12.2309089
Show Author Affiliations
Sven Verpoort, Münster Univ. of Applied Sciences (Germany)
Peter Rausch, Münster Univ. of Applied Sciences (Germany)
Ulrich Wittrock, Münster Univ. of Applied Sciences (Germany)

Published in SPIE Proceedings Vol. 10564:
International Conference on Space Optics — ICSO 2012
Bruno Cugny; Errico Armandillo; Nikos Karafolas, Editor(s)

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