A generalised and nonlinear wavefront estimator for Fourier-type wavefront sensors

Victoria Hutterer; Andreas Neubauer; Andreas Obereder; Julia Shatokhina; Ronny Ramlau

doi:10.1117/12.2627061

29 August 2022 A generalised and nonlinear wavefront estimator for Fourier-type wavefront sensors

Victoria Hutterer, Andreas Neubauer, Andreas Obereder, Julia Shatokhina, Ronny Ramlau

Proceedings Volume 12185, Adaptive Optics Systems VIII; 1218513 (2022) https://doi.org/10.1117/12.2627061
Event: SPIE Astronomical Telescopes + Instrumentation, 2022, Montréal, Québec, Canada

Abstract

We present a novel type of nonlinear reconstructor for all Fourier-type wavefront sensors like the Pyramid Wavefront Sensor. Different to interaction matrix approaches which critically degrade image quality due to approximation errors in nonlinear regimes, the new wavefront estimation algorithm has been designed to be robust in such frameworks. It works by employing an iterative technique to circumvent the major drawbacks associated with linear methods. A significant advantage to this approach is that the developed nonlinear algorithm is a generalised wavefront reconstruction method meaning that the reconstructor is directly applicable to any Fourier-type WFS.

Conference Presentation

Citation Download Citation

Victoria Hutterer, Andreas Neubauer, Andreas Obereder, Julia Shatokhina, and Ronny Ramlau "A generalised and nonlinear wavefront estimator for Fourier-type wavefront sensors", Proc. SPIE 12185, Adaptive Optics Systems VIII, 1218513 (29 August 2022); https://doi.org/10.1117/12.2627061

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