Demonstration of High Contrast Nulling Interferometry in the Thermal Infrared

Details Demonstration of High Contrast Nulling Interferometry in the Thermal Infrared Demonstration of High Contrast Nulling Interferometry in the Thermal Infrared

Mar 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003esasp.522e..11o&link_type=abstract

Proceedings of GENIE - DARWIN Workshop - Hunting for Planets (ESA SP-522). 3-6 June 2002. Leiden, The Netherlands. Editor: H. La

Physics

Scientific paper

Projects of space interferometers dedicated to the detection and analysis of extrasolar planets (DARWIN in Europe, TPF in the United States) are based on the nulling interferometry concept. This concept has been proposed by Bracewell in 1979 [1] but has never been demonstrated with high values of rejection, in the thermal infrared range, where the planet detection should be performed (6-18 μm). We have thus built a two-beam laboratory interferometer to validate this concept in a monochromatic case (at 10 μm). We present the principle of the experimental bench and its realisation and several problems we had to face. We also present the results obtained with this interferometer and future plan.

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