24 July 2014 Integrated optics interferometric four telescopes nuller
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Abstract
Nulling interferometry has been identified as a competitive technique for the detection of extrasolar planets. The technique consists in combining out-of-phase pairs of telescopes to null effectively the light of a bright star an reveal the dim glow of the companion. We have manufactured and tested with monochromatic light an integrated optics component which combines a linear array of 4 telescopes in the nulling mode envisaged by Angel&Wolf.1 Our testbench simulates the motion of a star in the sky. The tests have demonstrated a nulling scaling as the fourth power of the baseline delay.
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Ronny Errmann, Ronny Errmann, Stefano Minardi, Stefano Minardi, Lucas Labadie, Lucas Labadie, Felix Dreisow, Felix Dreisow, Stefan Nolte, Stefan Nolte, Thomas Pertsch, Thomas Pertsch, } "Integrated optics interferometric four telescopes nuller", Proc. SPIE 9146, Optical and Infrared Interferometry IV, 914626 (24 July 2014); doi: 10.1117/12.2055473; https://doi.org/10.1117/12.2055473
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