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astro-ph.IM2026
Jitter Sensing and Control for Multi-Plane Phase Retrieval
Caleb G. Abbott, Justin R. Crepp, Brian Sands
The family of multi-plane phase retrieval sensors, such as the curvature and nonlinear curvature wavefront sensors (WFS), contain tip/tilt information embedded in their signals. We…
astro-ph.IM2024
Centroiding and Extraction of Tip/Tilt Information from Nonlinear Curvature Wavefront Sensor Measurements
Caleb A. Abbott, Justin R. Crepp, Stanimir O. Letchev +1
The nonlinear curvature wavefront sensor (nlCWFS) uses multiple (typically four) out-of-focus images to reconstruct the phase and amplitude of a propagating light beam. Because the…
astro-ph.IM2024
Performance of the Nonlinear Curvature Wavefront Sensor as a Function of Scintillation Strength
Stanimir Letchev, Justin R. Crepp, Caleb G. Abbott +3
Local amplitude aberrations caused by scintillation can impact the reconstruction process of a wavefront sensor (WFS) by inducing a spatially non-uniform intensity at the pupil pla…