J.-F. Lavigne, R. Doyon, S. Thibault, M. Wang "Design of an infrared integral field spectrograph specialized for direct imaging of exoplanets" Proc. of SPIE, 6342, art. no. 63421M, 2006
Résumé: Quasi-static speckles are the main source of noise preventing the direct detection of exoplanets around bright stars. We are investigating the use of an infrared (1.5-2.4 µm) integral field spectrograph (IPS) specialised for speckle suppression and the detection of self-luminous giant planets. This paper presents the optical design and laboratory results obtained with a TIGER-type IPS prototype based on a microlens array. A similar IPS will be used for the Gemini Planet Imager (GPI). Preliminary speckle-suppression performances of the IPS are presented along with a prism design that allows keeping a constant spectral resolution over multiple wavebands as it will be required for GPI.
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