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Proceedings Article

The NULLTIMATE test bench: achromatic phase shifters for nulling interferometry

[+] Author Affiliations
Peter A. Schuller, Olivier Demangeon, Alain Léger, Michel Decaudin, Philippe Duret, Pavel Gabor, Alain Labèque

Univ. Paris-Sud, Institut d'Astrophysique Spatiale, CNRS (France)

Marc Barillot

Thales Alenia Space (France)

Bruno Chazelas

Univ. of Geneva (Switzerland)

Marc Derrien

Pôle Optique Rhône-Alpes (France)

Grégory Gadret, Jacques Mangin

Lab. Interdisciplinaire Carnot de Bourgogne, CNRS, Univ. de Bourgogne (France)

Jean Gay, Yves Rabbia

H. Fizeau, Univ. Nice Sophia Antipolis, CNRS, Observatoire de la Côte d'Azur (France)

Ralf Launhardt

Max-Planck-Institut für Astronomie (Germany)

Zoran Sodnik

European Space Research and Technology Ctr. (Netherlands)

Proc. SPIE 7734, Optical and Infrared Interferometry II, 77342E (July 21, 2010); doi:10.1117/12.857136
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From Conference Volume 7734

  • Optical and Infrared Interferometry II
  • San Diego, California, USA | June 27, 2010

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.

© (2010) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Peter A. Schuller ; Olivier Demangeon ; Alain Léger ; Marc Barillot ; Bruno Chazelas, et al.
"The NULLTIMATE test bench: achromatic phase shifters for nulling interferometry", Proc. SPIE 7734, Optical and Infrared Interferometry II, 77342E (July 21, 2010); doi:10.1117/12.857136; http://dx.doi.org/10.1117/12.857136


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