Franz X. Kärtner

Franz X. Kärtner is Professor of Physics at Universität Hamburg and leads the Ultrafast Optics and X-rays (UFOX) Group at the Center for Free-Electron Laser Science (CFEL), DESY, Hamburg. His work bridges fundamental research in ultrafast photonics and practical applications in large-scale scientific infrastructures.

His research focuses on ultrafast laser science, including few-cycle and ultralow jitter femtosecond lasers, sub-cycle optical waveform synthesizers, precision timing distribution, integrated photonics, compact electron and X-ray sources, terahertz generation and acceleration, and attosecond science. These areas are central to advancing next-generation light sources and precision measurement systems.

The publication trends—though not listed—would reflect deep engagement in photonics, quantum optics, and applied physics, with emphasis on instrumentation for extreme temporal and spatial resolution. His work often intersects engineering and physics, targeting real-world deployment in scientific and industrial settings.

Scientific Honors:

• Fellow of Optica
• Fellow of IEEE
• IEEE Laser Instrumentation Award (2022)
• UNIPRENEURS Award (2023)

Kärtner has advised numerous students and researchers in ultrafast optics and photonics, though specific names are not listed. His group has been supported by competitive grants from German and international funding agencies, and he actively collaborates with major research facilities. He co-founded Cycle GmbH, a Hamburg-based company commercializing precision timing and frequency distribution systems, linking academic innovation to industrial applications.

His lab, the Ultrafast Optics and X-rays (UFOX) Group at CFEL, develops cutting-edge laser systems for synchronization and control in free-electron lasers and other large-scale facilities, positioning it at the forefront of advanced photonics research.