The phase-shifted Zernike wave-front sensor

Mahawa Cisse; Vincent Chambouleyron; Olivier Fauvarque; Charlotte Z. Bond; Nicolas Levraud; Jean-François Sauvage; Benoit Neichel; Thierry Fusco

doi:10.1117/12.2628885

29 August 2022 The phase-shifted Zernike wave-front sensor

Mahawa Cisse, Vincent Chambouleyron, Olivier Fauvarque, Charlotte Z. Bond, Nicolas Levraud, Jean-François Sauvage, Benoit Neichel, Thierry Fusco

Author Affiliations +

Proceedings Volume 12185, Adaptive Optics Systems VIII; 121850X (2022) https://doi.org/10.1117/12.2628885
Event: SPIE Astronomical Telescopes + Instrumentation, 2022, Montréal, Québec, Canada

Abstract

The next generation of Giant Fragmented Telescopes will allow the study of faint and distant objects such as exoplanets. But the structure of the telescope also brings new challenges such as pupil fragmentation or Low- Wind Effect (LWE) that needs to be corrected by the Adaptive Optics (AO) system. The Wave-Front Sensor (WFS) which is the heart of the AO system needs to be able to measure these aberrations. Because of its high sensitivity, the Zernike Wave-Front Sensor (ZWFS) appears to be a viable candidate as a 2^nd stage instrument to measure telescope seeing or differential piston. However, its use is limited by its small dynamic range. We propose here a new concept of WFS based on the ZWFS with a better dynamic range : the Phase Shifted ZWFS (Phase-Shifted ZWFS).

Conference Presentation

Citation Download Citation

Mahawa Cisse, Vincent Chambouleyron, Olivier Fauvarque, Charlotte Z. Bond, Nicolas Levraud, Jean-François Sauvage, Benoit Neichel, and Thierry Fusco "The phase-shifted Zernike wave-front sensor", Proc. SPIE 12185, Adaptive Optics Systems VIII, 121850X (29 August 2022); https://doi.org/10.1117/12.2628885

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