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EADS Astrium nulling interferometer breadboard for DARWIN and GENIE
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Paper 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.

Paper Details

Date Published: 13 April 2018
PDF: 9 pages
Proc. SPIE 10568, International Conference on Space Optics — ICSO 2004, 1056820 (13 April 2018); doi: 10.1117/12.2500095
Show Author Affiliations
Klaus Ergenzinger, EADS Astrium GmbH (Germany)
Reinhold Flatscher, EADS Astrium GmbH (Germany)
Ulrich Johann, EADS Astrium GmbH (Germany)
Rob Vink, TNO Institute of Applied Physics (Netherlands)
Zoran Sodnik, European Space Research and Technology Ctr. (Netherlands)


Published in SPIE Proceedings Vol. 10568:
International Conference on Space Optics — ICSO 2004
Josiane Costeraste; Errico Armandillo, Editor(s)

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