EADS Astrium nulling interferometer breadboard for DARWIN and GENIE

Klaus Ergenzinger; Reinhold Flatscher; Ulrich Johann; Rob Vink; Zoran Sodnik

doi:10.1117/12.2500095

13 April 2018 EADS Astrium nulling interferometer breadboard for DARWIN and GENIE

Klaus Ergenzinger, Reinhold Flatscher, Ulrich Johann, Rob Vink, Zoran Sodnik

Proceedings Volume 10568, International Conference on Space Optics — ICSO 2004; 1056820 (2018) https://doi.org/10.1117/12.2500095
Event: International Conference on Space Optics 2004, 2004, Toulouse, France

Abstract

Within the context of the ESA TRP programme for DARWIN, a Nulling Interferometer Breadboard for the Near-Infrared was developed and tested. Its basic principle is recombining two light beams relying on a highly symmetric optical design (autobalanced Sagnac Core). Two different star simulators have been implemented, based on a) amplitude division and b) on wavefront division. The required achromatic Pi phase shift was implemented using a) dispersive phase shifter, and b) periscopes (geometrical pupil and field rotation). Due to the extremely symmetric optical design, very good star suppression up to 400 000 has been achieved. OPD control better than 1 nm RMS has been demonstrated over hours.

Citation Download Citation

Klaus Ergenzinger, Reinhold Flatscher, Ulrich Johann, Rob Vink, and Zoran Sodnik "EADS Astrium nulling interferometer breadboard for DARWIN and GENIE", Proc. SPIE 10568, International Conference on Space Optics — ICSO 2004, 1056820 (13 April 2018); https://doi.org/10.1117/12.2500095

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