Paper
28 June 2006 System driven design and validation of a cryogenic optical delay line for DARWIN
K. Ergenzinger, J. F. Pittet, A. Maerki
Author Affiliations +
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.
© (2006) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
K. Ergenzinger, J. F. Pittet, and A. Maerki "System driven design and validation of a cryogenic optical delay line for DARWIN", Proc. SPIE 6268, Advances in Stellar Interferometry, 62682M (28 June 2006); https://doi.org/10.1117/12.671645
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KEYWORDS
Cryogenics

Nulling interferometry

Optical benches

Interferometers

Laser metrology

Stars

Electronics

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