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Proceedings Paper

Nulling interferometer based on an integrated optics combiner
Author(s): Valerie Weber; Marc Barillot; Pierre Haguenauer; Pierre Y. Kern; Isabelle Schanen-Duport; Pierre R. Labeye; Laurence Pujol; Zoran Sodnik
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Paper Abstract

The Multi-Aperture Imaging Interferometer (MAI2), which Alcatel Space has been developing for ESA for deep nulling demonstration in preparation of the Darwin project, is based on an innovative layout, where both beam combination and modal wave-front filtering functions are achieved by means of an Integrated Optics (IO) component. Two different components, based on different designs and technologies, have been developed and characterised by LAOG with detailed design and manufacturing performed by IMEP/GeeO/LETI. SAGEIS-CSO (optical path control) and Alcatel Space have developed the other breadboard functions. The MAI² interferometer achieved stable Darwin-class nulling (10-5) of a simulated star in monochromatic light, and with a relative bandwidth of several percent (10-4). Operation in non-polarised light, with unchanged nulling performances, was also demonstrated. Preliminary characterisation of the relationship between nulling and bandwidth is also provided.

Paper Details

Date Published: 20 October 2004
PDF: 9 pages
Proc. SPIE 5491, New Frontiers in Stellar Interferometry, (20 October 2004); doi: 10.1117/12.550581
Show Author Affiliations
Valerie Weber, Alcatel Space (France)
Marc Barillot, Alcatel Space (France)
Pierre Haguenauer, Alcatel Space (France)
IMEP, CNRS and Institut National Polytechnique de Grenoble (France)
Pierre Y. Kern, Lab. d'Astrophysique de l'Observatoire de Grenoble (France)
Isabelle Schanen-Duport, IMEP, CNRS and Institut National Polytechnique de Grenoble (France)
Pierre R. Labeye, CEA-LETI (France)
Laurence Pujol, SAGEIS-CSO (France)
Zoran Sodnik, European Space Agency/ESTEC (Netherlands)


Published in SPIE Proceedings Vol. 5491:
New Frontiers in Stellar Interferometry
Wesley A. Traub, Editor(s)

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