Temporal pulse quality of a Yb:YAG burst-mode laser post-compressed in a multi-pass cell

Posted on 14.09.2021 - 15:38
Nonlinear pulse post-compression represents an efficient method for ultrashort, high-quality laser pulse production. The temporal pulse quality is, however, limited by amplitude and phase modulations intrinsic to post-compression. We here characterize in frequency and time domain with high dynamic range individual post-compressed pulses within laser bursts comprised of 100 kHz-rate pulse trains. We spectrally broaden 730 fs, 3.2 mJ pulses from a Yb:YAG laser in a gas-filled multi-pass cell and post-compress them to 56 fs. The pulses exhibit a nearly constant energy-content of 78 % in the main peak over the burst plateau which is close to the theoretical limit. Our results demonstrate attractive pulse characteristics making multi-pass post-compressed lasers well applicable for pump-probe spectroscopy at e.g. free-electron lasers or as efficient drivers for secondary frequency conversion stages.

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Viotti, Anne-Lise; Alisauskas, Skirmantas; Tuennermann, Henrik; Escoto, Esmerando; Seidel, Marcus; Dudde, Katharina; et al. (2021): Temporal pulse quality of a Yb:YAG burst-mode laser post-compressed in a multi-pass cell. The Optical Society. Collection. https://doi.org/10.6084/m9.figshare.c.5479446.v1
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AUTHORS (9)

Anne-Lise Viotti
Skirmantas Alisauskas
Henrik Tuennermann
Esmerando Escoto
Marcus Seidel
Katharina Dudde
Bastian Manschwetus
Ingmar Hartl
Christoph Heyl
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