In this paper, we present the design, fabrication and factory acceptance testing results of the receive (RX) adaptive optics add-on to the ESA optical ground station (1 m telescope). The system is suited to be operated with laser communication systems at 1064 nm wavelength or alternatively with one in the 1550 nm region. The wave-front sensor is a Shack-Hartmann-sensor (21 sub-apertures across the pupil), matched to a 24×24 actuator deformable mirror (DM). The system is able to remove a large part of the turbulence induced and static wave-front errors by using more than 300 degrees of freedom ("modes"). Due to a special high-speed infrared camera, the control loop can run at an update rate of 4 kHz in excess. Furthermore, we present an outlook on the future use of an adaptive optics system in the Coudé path of the ESA optical ground station, supporting pre-distortion of the uplink beam.


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    Title :

    ESA Optical Ground Station Upgrade with Adaptive Optics for High Data Rate Satellite-to-Ground Links-Test Results




    Publication date :

    2019-10-01


    Size :

    2270306 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English




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