Kontakt
Prof. Dr. Sebastian Frederick Mährlein
Leiter Hochfeld-THz getriebene Phänomene
s.maehrlein
hzdr.de
Tel.: +49 351 260 2240
Dr. Jan-Christoph Deinert
Koordinator TELBE Nutzeranlage
Hochfeld-THz getriebene Phänomene
j.deinerthzdr.de
Tel.: +49 351 260 3626
Mitgliedschaften
High-Field THz-Driven Phenomena
Forschung
TELBE Hochfeld THz Anlage
Beschleuniger-Diagnostik
| * 04.07.2026: Our websites are under construction. Updates will follow shortly. |
The High-field THz-driven phenomena department investigates dynamics in matter driven by high-field THz pulses. We are employing different ultra-fast spectroscopic techniques with few femtosecond time resolution. Available sample conditions include temperatures down to 2 K and external magnetic fields up to 7 T, allowing access to a large variety of physical processes and sample systems.
Our research interest is to understand how matter can be controlled and/or manipulated in the electronic ground state by the transient electric and magnetic fields of intense (THz) light pulses. To this aim we operate several state-of-the-art laser-driven high-field THz sources and perform research using accelerator-based high-field THz and femtosecond XUV sources. At the heart of our department is the High-field High-Repetition-Rate THz user facility TELBE. Here, our department is responsible for the development of the scientific programm, the operation as well as the user support and the inhouse-research. We are also heavily involved in the planning and development of the next generation THz and positron facility DALI at HZDR.
If you are excited about high-field THz physics, see our open positions or the user access portal.
User access and collaborations
Our lab infrastructure is open to international users. You can apply for access to TELBE in our twice-yearly calls for proposals. We are always open to new ideas of exploring the interactions of intense THz pulses with matter. Contact our team to discuss potential scientific collaborations which may include carrying out preliminary experiments at short notice using our laser-based, high-field THz sources and infrastructure.Latest News
- January 2026: New article published on THz harmonic generation in correlated oxides. Our postdoc Dr. Gulloo Lal Prajapati succeeded in generating intense THz harmonics in different nickelate systems, showing that the harmonic response of these materials sensitively maps their different phases. The work titled Terahertz harmonic generation across the Mott insulator-metal transition was a collaboration with the Indian Institute of Science Education and research Bhopal, the University of Fribourg and the Technical University Dortmund.
- January 2026: Dr. Andreas Gebauer joins our group to work on the THz pump - photoemission probe setup that is under construction in the TELBE lab. He brings ample of experise on attosecond photoemission spectroscopy that he gained during his doctoral work at the University of Bielefeld.
- March 2025: Kang Jin joins our department as new PhD student. Kang will be working on THz-driven spin dynamics in complex heterostructures. As a networking doctoral student he benefits from the extensive expertise and sample growth infrastructure at the Institute of Ion Beam Physics and Materials Science who closely collaborate with our group.
- January 2025: New article published demonstrating a new mechanism for the ultrafast read out of magnetic states. The work titled Ultrafast unidirectional spin Hall magnetoresistance driven by terahertz light field is a collaboration with the Institute of Ion Beam Physics and Materials Research and the Technical University Dortmund.
- October 2024: Learn how our FPGA-based data acquisition system at the TELBE facility overcomes the jitter problem inherent to accelerator-based pump-probe experiments. With this system users get a live view on the data from their experiments.
- June 2024: Prof. Dr. Sebastian Maehrlein joins HZDR and becomes the head of the new department of High-field THz-driven phenomena at the Institute of Radiation Physics.
Helmholtz Research
Our in-house research is part of the Helmholtz Research Program From Matter to Materials and Life in the research field Matter.
Withing the Helmholtz Association TELBE has been an Accelerator Research and Development (ARD) test facility for electron bunch diagnostic on quasi-CW low energy electron beams since 2014 ("ARD subtopic 3: fs-ps electron and photon beams"). Femtosecond level THz based electron bunch diagnostic is hence a second focus of the groups specific scientific interests.
Quick links
ELBE user portal: Information regarding beamtime proposals at the ELBE Center for High-Power Radiation Sources.
GATE: Beamtime organization platform for all beamlines at ELBE.
Radiation safety at ELBE: Information and prerequisites for your research visit
Funding
Helmholtz Research Association:
BMBF:
- Terahertz-driven electronic excitations probed by photoelectron spectroscopy (Tera-EXPOSE)
- Integriertes Spektrometer zur Elektronenbunchform-Onlinediagnose (INSel)
- Spektrale Analyse und ortsaufgelöstes Monitoring von Elektronenpaketen durch THz-Strahlung (SAMoS)
- Time-resolved Nanoscopy in the deep THz regime (TiNa)
European Union:
- The European Cluster of Advanced Laser Lightsources (EUCALL)
- Terahertz RAdio communication using high ANistropy SPIn-torque REsonators (TRANSPIRE)
Sächsisches Staatsministerium für Wissenschaft, Kultur und Tourismus SMWK
