Translator Disclaimer
21 July 2010 PERSEE: experimental results on the cophased nulling bench
Author Affiliations +
Nulling interferometry is still a promising method to characterize spectra of exoplanets. One of the main issues is to cophase at a nanometric level each arm despite satellite disturbances. The bench PERSEE aims to prove the feasibility of that technique for spaceborne missions. After a short description of PERSEE, we will first present the results obtained in a simplified configuration: we have cophased down to 0.22 nm rms in optical path difference (OPD) and 60 mas rms in tip/tilt, and have obtained a monochromatic null of 3 · 10-5 stabilized at 3•10-6. The goal of 1 nm with additional typical satellite disturbances requires the use of an optimal control law; that is why we elaborated a dedicated Kalman filter. Simulations and experiments show a good rejection of disturbances. Performance of the bench should be enhanced by using a Kalman control law, and we should be able to reach the desired nanometric stability. Following, we will present the first results of the final polychromatic configuration, which includes an achromatic phase shifter, perturbators and optical delay lines. As a conclusion, we give the first more general lessons we have already learned from this experiment, both at system and component levels for a future space mission.
© (2010) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
J. Lozi, F. Cassaing, J. M. Le Duigou, K. Houairi, B. Sorrente, J. Montri, S. Jacquinod, J.-M. Rees, L. Pham, E. Lhome, T. Buey, F. Hénault, A. Marcotto, P. Girard, N. Mauclert, M. Barillot, V. Coudé du Foresto, and M. Ollivier "PERSEE: experimental results on the cophased nulling bench", Proc. SPIE 7734, Optical and Infrared Interferometry II, 77342M (21 July 2010);


First results of the PERSEE experiment
Proceedings of SPIE (November 20 2017)
Calibration of a vertical-scan long trace profiler at MSFC
Proceedings of SPIE (December 27 2001)
Final results of the PERSEE experiment
Proceedings of SPIE (September 12 2012)
Early mission planning for the MOPITT instrument
Proceedings of SPIE (October 20 1999)
Prelaunch calibration of the NASA AURA HIRDLS instrument
Proceedings of SPIE (November 10 2003)
Using Dome C for MODIS calibration and characterization
Proceedings of SPIE (October 09 2008)

Back to Top