Soft X-ray scanning microscopy at 4th generation synchrotron light sources

SPICE Workshop on Characterization and control of quantum materials with optical vortex beams, June 10th - 12th 2025

Jörg Raabe

Diffraction limited synchrotron (DLSR), or 4th generation, light sources are a novel design promising an increase in the coherent photon flux of several orders of magnitude compared to the current 3rd generation storage ring design, revolutionizing synchrotron-based experiments.
For scanning transmission X-ray microscopy (STXM), the increase in coherent photon flux will allow us to routinely perform high-resolution imaging, as it will tackle all the issues occurring for high-resolution Xray optics.
For this purpose, SOPHIE, a novel end station for soft X-ray ptychography, was developed and build at the Swiss Light source (SLS). During the upgrade of the SLS to a 4th generation light source, it is currently installed at the SoftiMax beamline of MAX IV and will be installed at the SLS again end of 2025. This versatile end station provides a flexible design for different types of zone plate, detectors and scanning modes.
Examples of different imaging modes, also including beams with orbital angular momentum, will be presented.