Over the last 20 years, XUV and X-ray free-electron lasers have enabled a wide variety of
time-resolved experiments that have dramatically advanced our understanding of ultrafast …

The coupling of electronic and nuclear motion in polyatomic molecules is at the heart of
attochemistry. The molecular properties, transient structures, and reaction mechanism of …

Photoelectron interferometry with femtosecond and attosecond light pulses is a powerful
probe of the fast electron wave-packet dynamics, albeit it has practical limitations on the …

With FLASH2020+, a major upgrade of the FLASH facility has started to meet the new
requirements of the growing soft X-ray user community. The design of the FEL beamlines …

Time domain Ramsey-type interferometry is useful for investigating spectroscopic
information of quantum states in atoms and molecules. The energy range of the quantum …

Synchrotron radiation, emitted by relativistic electrons traveling in a magnetic field, has poor
temporal coherence. However, recent research has proved that time-domain interferometry …

In the present contribution, we use x-rays to monitor charge-induced chemical dynamics in
the photoionized amino acid glycine with femtosecond time resolution. The outgoing …

Interferometric pump–probe experiments in the extreme ultraviolet (XUV) domain are
experimentally very challenging due to the high phase stability required between the XUV …

Wave packet interferometry with vacuum ultraviolet light has been used to probe a complex
region of the electronic spectrum of molecular nitrogen, N 2. Wave packets of Rydberg and …

We present a compact, intrinsically stable common path interferometer for the seeding of
free-electron lasers (FELs). The interferometer can handle the required ultraviolet seed …