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Interférométrie annulante pour l'exoplanétologie - Étude et développement du recombineur du banc PERSEE

Abstract : For the past 15 years, the field of exoplanets detection has considerably expanded. Detection methods, first indirect, have allowed to discover no less than 420 new "worlds", sometimes astonishing. Scientists want now to characterize these exoplanets (particularly telluric ones) and Nulling interferometry is one of the direct detection methods assessed to do this. Within this framework, several space based projects are developed. Due to the complexity of these missions, it is necessary to test, first in laboratory, some technological aspects, as the principle of nulling interferometry. In 2006, CNES has decided to conduct an R&D on the payload of a two-telescope space based interferometer (typically the PEGASE instrument). Thus, the PERSEE test bench (Pegase Experiment for Research and Stabilization of Extreme Extinction) was conceived. The idea of PERSEE is to couple a nulling interferometer with a free flying simulator allowing introducing realistic disturbances and correcting them with active internal loops controlling the optical path difference and the pointing. This PhD work presents the design, the study and the development of one of the sub-systems of the bench : the beam combiner. This module is a new version of the "Modified Mach-Zehnder" beam combiner proposed by Serabyn et al. (2001). It has the particularity to combine the nuller and the Fringe Tracker system in order to minimize differential paths.
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Contributor : Sophie Jacquinod <>
Submitted on : Monday, December 20, 2010 - 2:35:18 PM
Last modification on : Thursday, December 10, 2020 - 11:09:09 AM
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  • HAL Id : tel-00548789, version 1

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Sophie Jacquinod. Interférométrie annulante pour l'exoplanétologie - Étude et développement du recombineur du banc PERSEE. Astrophysique [astro-ph]. Université Paris Sud - Paris XI, 2010. Français. ⟨tel-00548789⟩

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