MBI Staff Member – Personal info
Dr. Johannes Tuemmler
johannes.tuemmler(at)mbi-berlin.de
+49 30 6392 1311
B3: Laser Development
Building B, 3.3
Position
- Project Member 4.1 "Implementation of Lasers and Measuring Techniques"
Research
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.
Recent highlight(s)
- 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.
MBI Publications
- 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
- Transverse coherence limited coherent diffraction imaging using a molybdenum soft X-ray laser pumped at moderate pump energies Scientific Reports 7 (2017) 5314/1-10
- Soft X-ray nanoscale imaging using highly brilliant laboratory sources and new detector concepts SPIE Proceedings Series 10243 (2017) 1024309/1-10
- Thin-disk ring amplifier for high pulse energy Optics Express 24 (2016) 4375-4381
- Regenerative thin-disk amplifier for 300 mJ pulse energy Optics Express 24 (2016) 883-887
- Transient collisionally excited x-ray lasers pumped with one long and two short pulses X-Ray Lasers 2014, Springer Proceedings in Physics of the 14th International Conference on X-Ray Lasers 169 (2015) 53-59
- Nanoscale imaging using coherent and incoherent laboratory based soft x-ray sources X-Ray Lasers 2014 - X-Ray Lasers 2014, Springer Proceedings in Physics of the 14th International Conference on X-Ray Lasers online (2015) 267-273
- Note: Study of extreme ultraviolet and soft x-ray emission of metal targets produced by laser-plasma-interaction Review of Scientific Instruments 82 (2011) 066103/1-3