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arXiv · 2401.03744

Transport of Intensity Phase Retrieval in the Presence of Intensity Variations and Unknown Boundary Conditions

A. Lubk·R. Kyrychenko·D. Wolf·M. Wegner·M. Herzog·M. Winter·O. Zaiets·P. Vir·J. Schultz·C. Felser·B. Büchner
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Abstract

The so-called Transport of Intensity Equation (TIE) phase retrieval technique is widely applied in light, x-ray and electron optics to reconstruct, e.g., refractive indices, electric and magnetic fields in solids. Here, we present a largely improved TIE reconstruction algorithm, which properly considers intensity variations as well as unknown boundary conditions in a finite difference implementation of the Transport of Intensity partial differential equation. That largely removes reconstruction artifacts encountered in state-of-the-art Poisson solvers of the TIE, and hence significantly increases the applicability of the technique.

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A. Lubk, R. Kyrychenko, D. Wolf, M. Wegner, M. Herzog, M. Winter, O. Zaiets, P. Vir, J. Schultz, C. Felser, B. Büchner. 2024-01-08. Transport of Intensity Phase Retrieval in the Presence of Intensity Variations and Unknown Boundary Conditions. https://arxiv.org/abs/2401.03744

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