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Proceedings Paper

Picometer differential wavefront metrology by nonlinear Zernike wavefront sensing for LUVOIR
Author(s): Dustin B. Moore; David C. Redding
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Paper Abstract

We propose the Nonlinear Zernike wavefront sensor (NLZWFS) for out-of-band differential wavefront sensing to augment primary mirror stability on LUVOIR and similar mission concepts during exoplanet coronagraphy. This new data analysis paradigm involving a full polychromatic scalar physical optics model for the phase-shifting Zernike wavefront sensor removes the linearity assumptions which would otherwise prevent accurate sensing. We show Monte-Carlo simulations of NLZWFS and focus-diverse phase retrieval to understand the exposure times necessary to achieve picometer-level stability in the telescope wavefront.

Paper Details

Date Published: 6 July 2018
PDF: 10 pages
Proc. SPIE 10698, Space Telescopes and Instrumentation 2018: Optical, Infrared, and Millimeter Wave, 1069841 (6 July 2018); doi: 10.1117/12.2312600
Show Author Affiliations
Dustin B. Moore, Jet Propulsion Lab. (United States)
Caltech (United States)
David C. Redding, Jet Propulsion Lab. (United States)
Caltech (United States)


Published in SPIE Proceedings Vol. 10698:
Space Telescopes and Instrumentation 2018: Optical, Infrared, and Millimeter Wave
Makenzie Lystrup; Howard A. MacEwen; Giovanni G. Fazio; Natalie Batalha; Nicholas Siegler; Edward C. Tong, Editor(s)

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