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Proceedings Paper

System driven design and validation of a cryogenic optical delay line for DARWIN
Author(s): K. Ergenzinger; J. F. Pittet; A. Maerki
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Paper Abstract

The DARWIN mission of ESA will search for earth-like exo-planets orbiting suitable target stars in our solar neighborhood, and will allow direct low resolution spectroscopy of exo-planetary atmospheres. The optical enabling technology for DARWIN is high-contrast destructive Nulling interferometry of stellar light, necessitating utmost symmetry of optical beam trains. We report the system driven design of a cryogenic optical delay line compatible with the extremely tight requirements imposed by optical symmetry. After analysis of requirements and system aspects, we describe the actual design implementations and our validation scheme. We conclude with an outlook on integration of this ODL into a cryogenic ground-based testbed for DARWIN Nulling interferometry.

Paper Details

Date Published: 28 June 2006
PDF: 8 pages
Proc. SPIE 6268, Advances in Stellar Interferometry, 62682M (28 June 2006); doi: 10.1117/12.671645
Show Author Affiliations
K. Ergenzinger, EADS Astrium GmbH (Germany)
J. F. Pittet, EADS Astrium GmbH (Germany)
A. Maerki, Contraves Space AG (Switzerland)

Published in SPIE Proceedings Vol. 6268:
Advances in Stellar Interferometry
John D. Monnier; Markus Schöller; William C. Danchi, Editor(s)

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