Extended-image-based correction of aberrations using a deformable mirror with hysteresis
- With a view to the next generation of large space telescopes, we investigate guide-star-free, image-based aberration correction using a unimorph deformable mirror in a plane conjugate to the primary mirror. We designed and built a high-resolution imaging testbed to evaluate control algorithms. In this paper we use an algorithm based on the heuristic hill climbing technique and compare the correction in three different domains, namely the voltage domain, the domain of the Zernike modes, and the domain of the singular modes of the deformable mirror. Through our systematic experimental study, we found that successive control in two domains effectively counteracts uncompensated hysteresis of the deformable mirror.
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| Author: | Orestis Kazasidis, Sven Verpoort, Oleg Soloviev, Gleb Vdovin, Michel Verhaegen, Ulrich Wittrock |
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| URN: | urn:nbn:de:hbz:836-opus-14759 |
| URL: | https://www.osapublishing.org/oe/fulltext.cfm?uri=oe-26-21-27161&id=398820 |
| DOI: | https://doi.org/10.1364/OE.26.027161 |
| Parent Title (English): | Opt. Expr. |
| Document Type: | Article |
| Language: | English |
| Date of Publication (online): | 2018/10/08 |
| Date of first Publication: | 2018/10/24 |
| Provider of the Publication Server: | FH Münster - University of Applied Sciences |
| Contributing Corporation: | Delft Center for System and Control, Delft University of Technology |
| Release Date: | 2018/10/24 |
| Tag: | active optics, metrics, aberration compensation |
| Volume: | 26 |
| First Page: | 27161 |
| Last Page: | 27178 |
| Faculties: | Physikingenieurwesen (PHY) |
| Publication list: | Wittrock, Ulrich |
| Licence (German): |  Zweitveroeffentlichung |