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

TL;DR

This paper introduces a novel ptychography-based method that enables polarization-resolved imaging of materials using only a single polarization measurement, simplifying the process of analyzing birefringent and dichroic properties at nanometric resolution.

Contribution

It presents a new multimodal ptychography technique that disentangles polarization properties from a single measurement, reducing the need for multiple polarization states.

Findings

Successfully demonstrated polarization-resolved imaging with a single polarization

Achieved nanometric resolution in birefringent and dichroic property imaging

Provides an alternative approach when polarization manipulation is limited

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.