TY - GEN
T1 - Wave-front reconstruction for the non-linear curvature wave-front sensor
AU - Correia, Carlos
AU - Véran, J. P.
AU - Guyon, O.
AU - Clergeon, C.
PY - 2013
Y1 - 2013
N2 - Non-linear curvature wave-front sensing (nlCWFS) delivers outstanding sensitivity and high dynamic range by lifting the linearity constraint of standard curvature wave-front sensing and working in the non-linear Fresnel (near-field) regime [Guyon, 2010]. The goals of this paper are twofold: 1) revisit the phase-diversity PD formalism and attempt to use this framework, originally developed for the Fraunhofer (far-field) regime, with nlCWFS signals and 2) develop formulae making explicit use of the Fresnel regime for later use with gradient-based non-linear minimisation methods.
AB - Non-linear curvature wave-front sensing (nlCWFS) delivers outstanding sensitivity and high dynamic range by lifting the linearity constraint of standard curvature wave-front sensing and working in the non-linear Fresnel (near-field) regime [Guyon, 2010]. The goals of this paper are twofold: 1) revisit the phase-diversity PD formalism and attempt to use this framework, originally developed for the Fraunhofer (far-field) regime, with nlCWFS signals and 2) develop formulae making explicit use of the Fresnel regime for later use with gradient-based non-linear minimisation methods.
UR - http://www.scopus.com/inward/record.url?scp=84901941627&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84901941627&partnerID=8YFLogxK
U2 - 10.12839/AO4ELT3.13290
DO - 10.12839/AO4ELT3.13290
M3 - Conference contribution
AN - SCOPUS:84901941627
SN - 9788890887604
T3 - 3rd AO4ELT Conference - Adaptive Optics for Extremely Large Telescopes
BT - 3rd AO4ELT Conference - Adaptive Optics for Extremely Large Telescopes
PB - INAF - Osservatorio Astrofisico di Arcetri Largo Enrico Fermi
T2 - 3rd Conference on Adaptive Optics for Extremely Large Telescopes, AO4ELT 2013
Y2 - 26 May 2013 through 31 May 2013
ER -