Ultrafast Optics and X-Rays Division

Experimental mini accelerator achieves record energyª

Coupled terahertz device significantly improves electron beam quality
Laser trick produces high-energy terahertz pulsesª

Milestone for compact particle accelerators...find out more
Compact X-ray Sourcesª

Small THz accelerator structures for compact X-ray free electron lasers.
Optical Waveform Synthesisª

Inside a high energy optical parametric waveform synthesizer

Welcome you to the UFOX group website!
Here you will find out how our group is helping to push the boundary of knowledge.

Learn more about UFOX

What does UFOX stand for? It's Ultra Fast Optics and X-rays.
The group's research mainly focus on the control of photons and electrons with ever increasing precision, currently in the attosecond range, with the goal to advance ultrafast lasers and electron-based sources, ranging from THz to X-ray wavelengths. The sources we work with can be as small as a chip or as large as an airport, such as novel X-ray free-electron lasers, that enable new techniques to advance our understanding of the structure and function of matter.
The UFOX group is led by Professor Franz Kärtner.

Most of the UFOX group is currently working on the realization of a large experiment named AXSIS at DESY, which is funded by a Synergy Grant from the European Research Council (ERC).

Meet our teams

Our group is based in the CFEL building and we have many laboratories across the DESY campus. Find out more about the multidisciplinary research done by our research teams.
We are constantly looking for excellent Bachelor, Master and PhD-students, as well as Postdoctoral Associates.