Adaptive optics for daytime deep-space optical communications

Szymon Gladysz; Andreas Zepp; Raphael Bellossi; Max Segel; Douglas McDonald; Karin Stein

doi:10.1117/12.2633036

30 September 2022 Adaptive optics for daytime deep-space optical communications

Szymon Gladysz, Andreas Zepp, Raphael Bellossi, Max Segel, Douglas McDonald, Karin Stein

Proceedings Volume 12237, Laser Communication and Propagation through the Atmosphere and Oceans XI; 1223703 (2022) https://doi.org/10.1117/12.2633036
Event: SPIE Optical Engineering + Applications, 2022, San Diego, California, United States

Abstract

In deep-space optical communications, one particular challenge encountered at the ground receiver side are the wavefront deformations caused by atmospheric turbulence. This gives rise to reduced signal-to-background ratios and signal fades, especially during daytime links. Background rejection is therefore a fundamental requirement for optical links operating in the low-photon-count regime during the day. Both, spectral and spatial filtering subsystems are essential for this application. To this end, we have analyzed several wavefront sensing modalities including: Shack-Hartmann wavefront sensor, holographic wavefront sensing, and wavefront sensorless adaptive optics. The insights gained through simulations were used to drive the design of the laboratory-based demonstrator, which exhibited very similar performance improvements due to high-order correction as in the simulations, despite noise levels of the same magnitude as the signal.

Conference Presentation

Citation Download Citation

Szymon Gladysz, Andreas Zepp, Raphael Bellossi, Max Segel, Douglas McDonald, and Karin Stein "Adaptive optics for daytime deep-space optical communications", Proc. SPIE 12237, Laser Communication and Propagation through the Atmosphere and Oceans XI, 1223703 (30 September 2022); https://doi.org/10.1117/12.2633036

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