29 July 2016 Unimorph piezoelectric deformable mirrors for space telescopes
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Abstract
We have developed, manufactured and tested a unimorph deformable mirror for space applications based on piezoelectric actuation. The mirror was designed for the correction of low-order Zernike modes with a stroke of several tens of micrometers over a clear aperture of 50 mm. It was successfully tested in thermal vacuum, underwent lifetime tests, and was exposed to random vibrations, sinusoidal vibrations, and to ionizing radiation. We report on design considerations, manufacturing of the mirror, and present the test results. Furthermore, we discuss critical design parameters, and how our mirror could be adapted to serve recently proposed space telescopes such as HDST and TALC.
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P. Rausch, P. Rausch, S. Verpoort, S. Verpoort, U. Wittrock, U. Wittrock, "Unimorph piezoelectric deformable mirrors for space telescopes", Proc. SPIE 9904, Space Telescopes and Instrumentation 2016: Optical, Infrared, and Millimeter Wave, 990468 (29 July 2016); doi: 10.1117/12.2232548; https://doi.org/10.1117/12.2232548
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