Tests of achromatic phase shifters performed on the SYNAPSE test bench: a progress report

Details Tests of achromatic phase shifters performed on the SYNAPSE test bench: a progress report Tests of achromatic phase shifters performed on the SYNAPSE test bench: a progress report

2008-12-10

arxiv.org/abs/0812.1901v1

Astronomy and Astrophysics

Astrophysics

Scientific paper

10.1117/12.789269

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 Li\`ege 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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