Open AccessExtended-image-based correction of aberrations using a deformable mirror with hysteresis
Author(s) -
Orestis Kazasidis,
Sven Verpoort,
Oleg Soloviev,
Gleb Vdovin,
Michel Verhaegen,
Ulrich Wittrock
Publication year - 2018
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.26.027161
Subject(s) - deformable mirror , zernike polynomials , optics , computer science , image plane , adaptive optics , physics , unimorph , image (mathematics) , artificial intelligence , actuator , computer vision , wavefront
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.