Novel unimorph adaptive mirrors for astronomy applications

Peter Rausch; Sven Verpoort; Ulrich Wittrock

doi:10.1117/12.925966

13 September 2012 Novel unimorph adaptive mirrors for astronomy applications

Peter Rausch, Sven Verpoort, Ulrich Wittrock

Proceedings Volume 8447, Adaptive Optics Systems III; 844764 (2012) https://doi.org/10.1117/12.925966
Event: SPIE Astronomical Telescopes + Instrumentation, 2012, Amsterdam, Netherlands

Abstract

We have developed a new type of unimorph deformable mirror for the correction of low-order Zernike modes. The mirror features a clear aperture of 50 mm combined with large peak-to-valley amplitudes of up to 35 μm. Newly developed fabrication processes allow the use of prefabricated, coated, super-polished glass substrates. The mirror's unique features suggest the use in several astronomical applications like the compensation of atmospheric aberrations seen by laser beacons and the use in woofer-tweeter systems. Additionally, the design enables an efficient correction of the inevitable wave-front error imposed by the floppy structure of primary mirrors in future large space 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.

Citation Download Citation

Peter Rausch, Sven Verpoort, and Ulrich Wittrock "Novel unimorph adaptive mirrors for astronomy applications", Proc. SPIE 8447, Adaptive Optics Systems III, 844764 (13 September 2012); https://doi.org/10.1117/12.925966

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