28 July 2010 A simple and efficient model for polychromatic focal plane wave-front sensor
Author Affiliations +
Proceedings Volume 7736, Adaptive Optics Systems II; 773629 (2010); doi: 10.1117/12.857226
Event: SPIE Astronomical Telescopes + Instrumentation, 2010, San Diego, California, United States
Phase Diversity is a focal-plane technique which is chromatic by nature. The use of a monochromatic model on wide-band imaging results of an additional error function of the spectral range.We present here a second order modeling of the focal plane wave-front sensing error due to wide-band imaging and propose a first order correction by inverse problem and the first results of an end-to-end simulation for an iterative correction. Simulation results of 20 nm wave-front aberrations show that the reconstruction error decreases from 10 nm with classical focal-plane sensor to sub-nanometric error with optimal correction at Δλ = 500 nm.
© (2010) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
S. Dandy, J.-F. Sauvage, T. Fusco, L. Mugnier, "A simple and efficient model for polychromatic focal plane wave-front sensor", Proc. SPIE 7736, Adaptive Optics Systems II, 773629 (28 July 2010); doi: 10.1117/12.857226; https://doi.org/10.1117/12.857226



Error analysis


Point spread functions

Inverse problems

Image acquisition

Back to Top