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Proceedings Paper • Open Access

Study of the coherent perturbation of a Michelson interferometer due to the return from a scattering surface
Author(s): Vitalii Khodnevych; Sibilla Di Pace; Jean-Yves Vinet; Nicoleta Dinu-Jaeger; Michel Lintz

Paper Abstract

We describe a setup based on Michelson interferometry for coherent measurements of the backscattered light from a low roughness optical surface under test. Special data processing was developed for the extraction of the useful signal from the various stray contributions to the coherent signal. We achieve coherent detection of light scattered by a mirror down to -130 dB in optical power. We characterize the dependence of the backscattered light with spot position and incidence angle. Results of cross-polarization scattering coherent measurements and preliminary results of dust deposition experiment are presented here. This work represents the first step in the experimental evaluation of the coherent perturbation induced by the scattered light in the space gravitational wave detector of the LISA mission.

Paper Details

Date Published: 12 July 2019
PDF: 10 pages
Proc. SPIE 11180, International Conference on Space Optics — ICSO 2018, 111807T (12 July 2019); doi: 10.1117/12.2536200
Show Author Affiliations
Vitalii Khodnevych, Institut d’Astrophysique Spatiale, Univ. Paris-Sud, Univ. Paris-Saclay, CNRS (France)
Sibilla Di Pace, Institut d’Astrophysique Spatiale, Univ. Paris-Sud, Univ. Paris-Saclay, CNRS (France)
Jean-Yves Vinet, Institut d’Astrophysique Spatiale, Univ. Paris-Sud, Univ. Paris-Saclay, CNRS (France)
Nicoleta Dinu-Jaeger, Institut d’Astrophysique Spatiale, Univ. Paris-Sud, Univ. Paris-Saclay, CNRS (France)
Michel Lintz, Institut d’Astrophysique Spatiale, Univ. Paris-Sud, Univ. Paris-Saclay, CNRS (France)


Published in SPIE Proceedings Vol. 11180:
International Conference on Space Optics — ICSO 2018
Zoran Sodnik; Nikos Karafolas; Bruno Cugny, Editor(s)

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