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Proceedings Paper

The NULLTIMATE test bench: achromatic phase shifters for nulling interferometry
Author(s): Peter A. Schuller; Olivier Demangeon; Alain Léger; Marc Barillot; Bruno Chazelas; Michel Decaudin; Marc Derrien; Philippe Duret; Pavel Gabor; Grégory Gadret; Jean Gay; Alain Labèque; Ralf Launhardt; Jacques Mangin; Yves Rabbia; Zoran Sodnik
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Paper Abstract

The NULLTIMATE project developed and realized three concepts of achromatic phase shifters for nulling interferometry. One of the concepts is based on dispersive plates made of three materials which where fully characterized regarding their refractive index and thermo-optic behavior between 100K and 330 K. The other two concepts are based on mirror optics, one of which uses the phase shift of π when crossing a focus, the other the reversal of electric fields at reflection. An optical bench has been set up to test and characterize these phase shifters at wavelengths 2 − 2.4 μm with the option of changing to the 10 μm domain. We summarize the development of the achromatic phase shifters and report on the current status of the test bench.

Paper Details

Date Published: 21 July 2010
PDF: 16 pages
Proc. SPIE 7734, Optical and Infrared Interferometry II, 77342E (21 July 2010); doi: 10.1117/12.857136
Show Author Affiliations
Peter A. Schuller, Univ. Paris-Sud, Institut d'Astrophysique Spatiale, CNRS (France)
Olivier Demangeon, Univ. Paris-Sud, Institut d'Astrophysique Spatiale, CNRS (France)
Alain Léger, Univ. Paris-Sud, Institut d'Astrophysique Spatiale, CNRS (France)
Marc Barillot, Thales Alenia Space (France)
Bruno Chazelas, Univ. of Geneva (Switzerland)
Michel Decaudin, Univ. Paris-Sud, Institut d'Astrophysique Spatiale, CNRS (France)
Marc Derrien, Pôle Optique Rhône-Alpes (France)
Philippe Duret, Univ. Paris-Sud, Institut d'Astrophysique Spatiale, CNRS (France)
Pavel Gabor, Univ. Paris-Sud, Institut d'Astrophysique Spatiale, CNRS (France)
Grégory Gadret, Lab. Interdisciplinaire Carnot de Bourgogne, CNRS, Univ. de Bourgogne (France)
Jean Gay, H. Fizeau, Univ. Nice Sophia Antipolis, CNRS, Observatoire de la Côte d'Azur (France)
Alain Labèque, Univ. Paris-Sud, Institut d'Astrophysique Spatiale, CNRS (France)
Ralf Launhardt, Max-Planck-Institut für Astronomie (Germany)
Jacques Mangin, Lab. Interdisciplinaire Carnot de Bourgogne, CNRS, Univ. de Bourgogne (France)
Yves Rabbia, H. Fizeau, Univ. Nice Sophia Antipolis, CNRS, Observatoire de la Côte d'Azur (France)
Zoran Sodnik, European Space Research and Technology Ctr. (Netherlands)


Published in SPIE Proceedings Vol. 7734:
Optical and Infrared Interferometry II
William C. Danchi; Françoise Delplancke; Jayadev K. Rajagopal, Editor(s)

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