Model-independent noise-robust extension of ptychography

Journal article (2018)

Authors

A.P. Konijnenberg ImPhys/Optics - AS
W.M.J.M. Coene ASML, ImPhys/Optics - AS
Paul Urbach ImPhys/Optics - AS
Research Group
ImPhys/Optics (AS) (TU Delft)
Copyright: © 2018 A.P. Konijnenberg, W.M.J.M. Coene, Paul Urbach
DOI: https://doi.org/10.1364/OE.26.005857
Phase retrieval Computational imaging Inverse problems OA-Fund TU Delft Noise in imaging systems
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Published Date

2018

Language

English

Reuse Rights

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Faculty

Applied Sciences

Department

ImPhys/Imaging Physics

Research Group

ImPhys/Optics

Abstract

A noise-robust extension of iterative phase retrieval algorithms that does not need to assume a noise model is proposed. It works by adapting the intensity constraints using the reconstructed object. Using a proof-of-principle ptychographic experiment with visible light and a spatial light modulator to create an object, the proposed method is tested and it compares favorably to the Extended Ptychographic Iterative Engine (ePIE) with reduced step size. The method is general, so it can also be applied to other iterative reconstruction schemes such as phase retrieval using focus variation.

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