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Proceedings Paper

Stabilising a nulling interferometer using optical path difference dithering: an update
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Paper Abstract

Nulling interferometry has been suggested as the underlying principle for an instrument which could provide direct detection and spectroscopy of Earth-like exo-planets, including searches for potential bio-signatures. This paper documents the potential of optical path difference (OPD) stabilisation with dithering methods for improving the mean nulling ratio and its stability. The basic dithering algorithm, its refined versions and parameter tuning, are reviewed. This paper takes up the recently presented results1 and provides an update on OPD-stabilisation at significantly higher levels of nulling performance.

Paper Details

Date Published: 28 July 2008
PDF: 9 pages
Proc. SPIE 7013, Optical and Infrared Interferometry, 70131R (28 July 2008); doi: 10.1117/12.789222
Show Author Affiliations
Pavel Gabor, Institut d'Astrophysique Spatiale, Univ. Paris-Sud XI (France)
Bruno Chazelas, Observatoire de Genève (Switzerland)
Peter A. Schuller, Institut d'Astrophysique Spatiale, Univ. Paris-Sud XI (France)
Frank Brachet, Ctr. National d'Etudes Spatiales (France)
Marc Ollivier, Institut d'Astrophysique Spatiale, Univ. Paris-Sud XI (France)
Michel Decaudin, Institut d'Astrophysique Spatiale, Univ. Paris-Sud XI (France)
Alain Labèque, Institut d'Astrophysique Spatiale, Univ. Paris-Sud XI (France)
Philippe Duret, Institut d'Astrophysique Spatiale, Univ. Paris-Sud XI (France)
Sophie Jacquinod, Institut d'Astrophysique Spatiale, Univ. Paris-Sud XI (France)
Alain Léger, Institut d'Astrophysique Spatiale, Univ. Paris-Sud XI (France)


Published in SPIE Proceedings Vol. 7013:
Optical and Infrared Interferometry
Markus Schöller; William C. Danchi; Françoise Delplancke, Editor(s)

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