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arXiv · 2404.18627

Magnetic X-ray imaging using a single polarization and multimodal-ptychography

Marisel Di Pietro Martínez·Alexis Wartelle·Nicolas Mille·Stefan Stanescu·Rachid Belkhou·Farid Fettar·Vincent Favre-Nicolin·Guillaume Beutier
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Abstract

Polarized X-rays allow for imaging birefringent or dichroic properties of materials with nanometric resolution. To disentangle these properties from the electronic density, either a polarization analyzer or several measurements with different polarizations (typically two, or more) are needed. Here we demonstrate that ptychography can disentangle these from a single-polarization measurement by using a multimodal analysis. This new method provides an alternative to obtain polarization-resolved images of a sample when manipulating the incident polarization is not possible nor sufficient.

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Marisel Di Pietro Martínez, Alexis Wartelle, Nicolas Mille, Stefan Stanescu, Rachid Belkhou, Farid Fettar, Vincent Favre-Nicolin, Guillaume Beutier. 2024-04-29. Magnetic X-ray imaging using a single polarization and multimodal-ptychography. https://doi.org/10.1103/physrevlett.134.016704

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