Chambouleyron, V.V.ChambouleyronFauvarque, O.O.FauvarquePLANTET, Cedric Antoine Adrien GabrielCedric Antoine Adrien GabrielPLANTETSauvage, J. -F.J. -F.SauvageLevraud, N.N.LevraudCissé, M.M.CisséNeichel, B.B.NeichelFusco, T.T.Fusco2025-02-052025-02-0520230004-6361http://hdl.handle.net/20.500.12386/35815Context. Adaptive optics (AO) is a technique allowing for ground-based telescopes' angular resolution to be improved drastically. The wavefront sensor (WFS) is one of the key components of such systems, driving the fundamental performance limitations. <BR /> Aims: In this paper, we focus on a specific class of WFS: the Fourier-filtering wavefront sensors (FFWFSs). This class is known for its extremely high sensitivity. However, a clear and comprehensive noise propagation model for any kind of FFWFS is lacking. <BR /> Methods: Considering read-out noise and photon noise, we derived a simple and comprehensive model allowing us to understand how these noises propagate in the phase reconstruction in the linear framework. <BR /> Results: This new noise propagation model works for any kind of FFWFS, and it allows one to revisit the fundamental sensitivity limit of these sensors. Furthermore, a new comparison between widely used FFWFSs is held. We focus on the two main FFWFS classes used: the Zernike WFS (ZWFS) and the pyramid WFS (PWFS), bringing new understanding of their behavior....STAMPAenArticle10.1051/0004-6361/2022453512-s2.0-85148958280http://arxiv.org/abs/2212.13577v2https://www.aanda.org/articles/aa/full_html/2023/02/aa45351-22/aa45351-22.htmlFIS/05 - ASTRONOMIA E ASTROFISICA