Benedikt Rösner

Benedikt Rösner is a researcher at the Paul Scherrer Institute (PSI) in the Laboratory for Non-linear Optics under the Center for Photon Science. He specializes in X-ray optics, orbital angular momentum (OAM) of light, and nanofabrication techniques for advanced microscopy.

• Education: PhD in Physical Chemistry from Friedrich-Alexander University Erlangen-Nürnberg (FAU Erlangen-Nürnberg).

Rösner's research focuses on developing diffractive X-ray optics for high-resolution imaging, achieving a world-record 7 nm spatial resolution in soft X-ray microscopy. His work explores light-matter interactions with OAM beams, demonstrating novel phenomena like helical dichroism and magnetic helicoidal dichroism. He also investigates ultrafast processes via X-ray transient grating spectroscopy and time-streaking experiments at free-electron lasers.

Key trends in his publications include advancements in X-ray microscopy resolution, OAM-based spectroscopies, and magnetic dynamics studies using femtosecond pulses. Collaborations span institutions like CNRS, University Pierre and Marie Curie, and FERMI free electron laser. His technical contributions involve designing optical elements for beamline upgrades in the SLS 2.0 project.