Wave-front reconstruction for the non-linear curvature wave-front sensor

• Type: Article in International Conference Proceedings Book
• Date: 2013

Authors

Correia, C (Author) FCUP; Veran, JP (Author) Other; Guyon, O (Author) Other; Clergeon, C (Author) Other

Conference proceedings International

Title: 3rd AO4ELT Conference - Adaptive Optics for Extremely Large Telescopes

3rd Conference on Adaptive Optics for Extremely Large Telescopes, AO4ELT 2013

Florence, 26 May 2013 through 31 May 2013

Indexing

Scopus - 4 Citations

Other information

Authenticus ID: P-009-HG8

DOI: 10.12839/ao4elt3.13290

Abstract (EN): 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.

Language: English

Type (Professor's evaluation): Scientific