28 July 2008 Tests of achromatic phase shifters performed on the SYNAPSE test bench: a progress report
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Abstract
The achromatic phase shifter (APS) is a component of the Bracewell nulling interferometer studied in preparation for future space missions (viz. Darwin/TPF-I) focusing on spectroscopic study of Earth-like exo-planets. Several possible designs of such an optical subsystem exist. Four approaches were selected for further study. Thales Alenia Space developed a dielectric prism APS. A focus crossing APS prototype was developed by the OCA, Nice, France. A field reversal APS prototype was prepared by the MPIA in Heidelberg, Germany. Centre Spatial de Liege develops a concept based on Fresnel's rhombs. This paper presents a progress report on the current work aiming at evaluating these prototypes on the Synapse test bench at the Institut d'Astrophysique Spatiale in Orsay, France.
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Pavel Gabor, Peter A. Schuller, Bruno Chazelas, Michel Decaudin, Alain Labèque, Philippe Duret, Yves Rabbia, Ralf Launhardt, Jean Gay, Zoran Sodnik, Marc Barillot, Frank Brachet, Thomas Laurent, Sophie Jacquinod, Denis Vandormael, Jérôme Loicq, Dimitri Mawet, Marc Ollivier, Alain Léger, "Tests of achromatic phase shifters performed on the SYNAPSE test bench: a progress report", Proc. SPIE 7013, Optical and Infrared Interferometry, 70134O (28 July 2008); doi: 10.1117/12.789269; https://doi.org/10.1117/12.789269
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