Abstract

We report on the generation of GW-class peak power, 35-fs pulses at 2-µm wavelength with an average power of 51 W at 300-kHz repetition rate. A compact, krypton-filled Herriott-type cavity employing metallic mirrors is used for spectral broadening. This multi-pass compression stage enables the efficient post compression of the pulses emitted by an ultrafast coherently combined thulium-doped fiber laser system. The presented results demonstrate an excellent preservation of the input beam quality in combination with a power transmission as high as 80%. These results show that multi-pass cell based post-compression is an attractive alternative to nonlinear spectral broadening in fibers, which is commonly employed for thulium-doped and other mid-infrared ultrafast laser systems. Particularly, the average power scalability and the potential to achieve few-cycle pulse durations make this scheme highly attractive.

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Kilowatt-average-power compression of millijoule pulses in a gas-filled multi-pass cell

Christian Grebing, Michael Müller, Joachim Buldt, Henning Stark, and Jens Limpert
Opt. Lett. 45(22) 6250-6253 (2020)

Nonlinear pulse compression to 43 W GW-class few-cycle pulses at 2 μm wavelength

M. Gebhardt, C. Gaida, T. Heuermann, F. Stutzki, C. Jauregui, J. Antonio-Lopez, A. Schulzgen, R. Amezcua-Correa, J. Limpert, and A. Tünnermann
Opt. Lett. 42(20) 4179-4182 (2017)

High average power nonlinear compression to 4  GW, sub-50  fs pulses at 2  μm wavelength

M. Gebhardt, C. Gaida, F. Stutzki, S. Hädrich, C. Jauregui, J. Limpert, and A. Tünnermann
Opt. Lett. 42(4) 747-750 (2017)

Multi-gigawatt peak power post-compression in a bulk multi-pass cell at a high repetition rate

Ann-Kathrin Raab, Marcus Seidel, Chen Guo, Ivan Sytcevich, Gunnar Arisholm, Anne L’Huillier, Cord L. Arnold, and Anne-Lise Viotti
Opt. Lett. 47(19) 5084-5087 (2022)

Nonlinear pulse compression to sub-two-cycle, 1.3 mJ pulses at 1.9 μm wavelength with 132 W average power

Ziyao Wang, Tobias Heuermann, Martin Gebhardt, Mathias Lenski, Philipp Gierschke, Robert Klas, Jan Rothhardt, Cesar Jauregui, and Jens Limpert
Opt. Lett. 48(10) 2647-2650 (2023)