Deep nulling in unpolarized light

Christophe Buisset; Xavier Rejeaunier; Yves Rabbia; Marc Barillot

doi:10.1117/12.732316

19 September 2007 Deep nulling in unpolarized light

Christophe Buisset, Xavier Rejeaunier, Yves Rabbia, Marc Barillot

Proceedings Volume 6693, Techniques and Instrumentation for Detection of Exoplanets III; 669317 (2007) https://doi.org/10.1117/12.732316
Event: Optical Engineering + Applications, 2007, San Diego, California, United States

Abstract

In the context of the ESA-Darwin mission, Thales Alenia Space has developed a nulling breadboard for ESA. The Multi Aperture Imaging Interferometer (MAII) first demonstrated deep nulling in both integrated optics and multi-axial combination schemes. More recently, Thales Alenia Space and Observatoire de la Côte d'Azur have been improving the nulling performance of MAII. The work was focused on polarization and the bench was upgraded consequently. Unpolarized and polarized nulling ratios are now quite similar at N ≈ 10^-5 over a 5% relative bandwidth, stable over more than one hour. In this paper, we report on the improvements we have implemented in MAII and present our latest results.

Citation Download Citation

Christophe Buisset, Xavier Rejeaunier, Yves Rabbia, and Marc Barillot "Deep nulling in unpolarized light", Proc. SPIE 6693, Techniques and Instrumentation for Detection of Exoplanets III, 669317 (19 September 2007); https://doi.org/10.1117/12.732316

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