21 July 2014 Very low noise Shack-Hartmann wavefront sensor for adaptive optics in the near-IR
Author Affiliations +
Abstract
Near-Infrared wave front sensing allows to enhance sky coverage with adaptive optics. The recently developed HgCdTe avalanche photodiode arrays are promising, but still present an unperfect cosmetic. After the fine characterization of such a HgCdTe array, we propose a statistical model of the pixel response. Assuming the cosmetic is partially corrected, we simulate the impact of the residual error on a Shack-Hartmann wavefront sensor measurement. The study shows the operability of such a real time correction, and of the HgCdTe APD array characterized in this framework: the RAPID camera.
© (2014) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Silvère Gousset, Clélia Robert, Thierry Fusco, Vincent Michau, Cyril Petit, Sophie Derelle, Joel Deschamps, Philippe Feautrier, Eric Stadler, Eric D. de Borniol, Johan Rothman, Jérôme Coussement, "Very low noise Shack-Hartmann wavefront sensor for adaptive optics in the near-IR", Proc. SPIE 9148, Adaptive Optics Systems IV, 91481A (21 July 2014); doi: 10.1117/12.2057712; https://doi.org/10.1117/12.2057712
PROCEEDINGS
13 PAGES


SHARE
Back to Top