Ultrafast dynamics at extreme time scales using X-ray spectroscopy

Dr. Oliviero Cannelli (Center for Free-Electron Laser Science (CFEL), Deutsches Elektronen-Synchrotron DESY, Hamburg)
Ultrafast dynamics at extreme time scales using X-ray spectroscopy

Abstract
The emergence of ultrashort X-ray sources has revolutionized the field of time-resolved science adding atomic-level precision and element-selectivity to the investigation of ultrafast processes. In the past decade, X-ray free electron lasers (XFELs) and high harmonic generation (HHG) setups established as the dominant sources of pulsed X-rays thanks to their different capabilities, spurring the development of novel spectroscopic methods. In this talk, I will show recent results that we obtained at the European XFEL for the investigation of ultrafast dynamics in complex systems, complementing all-optical spectroscopic measurements with multiple X-ray investigation methods. I will then discuss the potential of HHG and table-top setups, drawing future perspectives in the field of ultrafast X-ray spectroscopy when pushing the time resolution of the experiments to their extreme time.