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Proceedings Paper

Adaptive optics for satellite-to-ground laser communication at the 1m Telescope of the ESA Optical Ground Station, Tenerife, Spain
Author(s): Thomas Berkefeld; Dirk Soltau; Reinhard Czichy; Edgar Fischer; Bernhard Wandernoth; Zoran Sodnik
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Paper Abstract

We present the setup including optics and components, the reconstruction scheme and performance estimations of an Adaptive Optics (AO) system implemented at the 1m telescope of the ESA Optical Ground Station (OGS), Observatorio del Teide, Tenerife. The system will be used to improve the signal-to-noise ratio of satellite to ground laser communications. It operates with coherent laser communication systems at 1064nm. The wavefront sensor is an 88-element Shack-Hartmann-sensor (11 subapertures across the pupil), matched to a 12×12 actuator "Multi-DM" membrane deformable mirror (DM). The system is able to remove a large part of the turbulence-induced and static wavefront errors by using more than 90 degrees of freedom ("modes"). Due to a special high speed infrared camera, the control loop can run at speeds up to 20 kHz, achieving a 0db bandwidth of about 500Hz, depending on the received laser power.

Paper Details

Date Published: 28 July 2010
PDF: 8 pages
Proc. SPIE 7736, Adaptive Optics Systems II, 77364C (28 July 2010); doi: 10.1117/12.857681
Show Author Affiliations
Thomas Berkefeld, Kiepenheuer Institut für Sonnenphysik (Germany)
Dirk Soltau, Kiepenheuer Institut für Sonnenphysik (Germany)
Reinhard Czichy, Synopta GmbH (Switzerland)
Edgar Fischer, Synopta GmbH (Switzerland)
Bernhard Wandernoth, Synopta GmbH (Switzerland)
Zoran Sodnik, European Space Research and Technology Ctr. (Netherlands)

Published in SPIE Proceedings Vol. 7736:
Adaptive Optics Systems II
Brent L. Ellerbroek; Michael Hart; Norbert Hubin; Peter L. Wizinowich, Editor(s)

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