- Project Member 4.1 "Implementation of Lasers and Measuring Techniques"
The development of thin-disk laser technology was a very important topic for MBI during the last several years. These developments are now used on a daily basis for different applications, e.g. as driver laser for a laser-plasma based soft X-ray source.
OPCPA systems with their broadband amplification spectrum and the resulting very short pulse duration are of increasing importance to study ultra-fast dynamics. We have integrated two of our Yb:YAG regenerative thin-disk lasers as pump lasers in an OPCPA laser system to generate sub-10 fs pulses with 30 mJ pulse energy.
This OPCPA system has been set up, recently, and is used for experiments since December 2018. In three successive OPCPA stages the pulse energy of a broadband seed pulse is amplified to more than 30 mJ. Challenging in the setup of OPCPA systems is the temporal overlap of seed and pump pulses. The timing has to be monitored to compensated for thermal drifts and timing jitter due to e.g. vibrations or air turbulences. The compression with low energy loss of the broadband amplified pulse is also of major importance. We use a combination of glass compressor and chirped mirrors to reach a pulse duration well below 10 fs.
This system is still under further development in close contact to the users and depending on the needs of their experiments.
- OPCPA system emitting pulses with energy ~30mJ, duration < 10 fs at 100 Hz repetition rate.
- Demonstration of more than 1 J pulse energy at 100 Hz repetition rate using a room-temperature ring amplifier based on thin-disk technology.
- Regenerative amplifier emitting more than 300 mJ pulse energy at 100 Hz repetition rate.
- Towards understanding excited-state properties of organic molecules using time-resolved soft X-ray absorption spectroscopy International Journal of Molecular Sciences 22 (2021) 13463/1-18
- Ultrafast NEXAFS spectroscopy in the lab using laser-based sources and advanced X-ray optics SPIE Proceedings Series 11886 (2021) 11886 12/1-9
- Laser-driven resonant magnetic soft-x-ray scattering for probing ultrafast antiferromagnetic and structural dynamics Optica 8 (2021) 1237-1242
- Thin-disk laser-pumped OPCPA system delivering 4.4 TW few-cycle pulses Optics Express 28 (2020) 34574-34585
- Time-resolved near-edge x-ray absorption spectroscopy in the water window and beyond using laboratory-based laser plasma sources X-Ray Lasers 2018 (2020) Proceedings of the 16th International Conference on X-Ray Lasers ICXRL 2018 (2020) 147-154
- Propagation-assisted generation of intense few-femtosecond high-harmonic pulses Journal of Physics: Photonics 2 (2020) 034002/1-10
- Highly nonlinear ionization of atoms induced by intense high-harmonic pulses Journal of Physics: Photonics 2 (2020) 034001/1-12
- Novel high-power, high repetition rate laser diode pump modules suitable for high-energy class laser facilities Instruments 3 (2019) 34/1-13
- Coherent diffraction imaging with tabletop XUV sources X-Ray Lasers 2016, Proceedings of the 15th International Conference on X-Ray Lasers Springer, Heidelberg (2018) 231-241
- 2D and 3D nanoscale imaging using high repetition rate laboratory-based soft x-ray sources X-Ray Lasers 2016, Proceedings of the 15th International Conference on X-Ray Lasers Springer, Heidelberg (2018) 265-272