Journal
OPTICS LETTERS
Volume 46, Issue 18, Pages 4686-4689Publisher
OPTICAL SOC AMER
DOI: 10.1364/OL.435073
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Funding
- Vetenskapsradet [2019-06275]
- Bundesministerium fur Bildung und Forschung [05K16VKA]
- Swedish Research Council [2019-06275] Funding Source: Swedish Research Council
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Nonlinear pulse post-compression is an efficient method for producing ultrashort, high-quality laser pulses, but the temporal pulse quality is limited by amplitude and phase modulations. The study characterizes individual post-compressed pulses with high dynamic range, demonstrating nearly constant energy content in the main peak over the burst plateau. This makes multi-pass post-compressed lasers attractive for pump-probe spectroscopy and secondary frequency conversion stages.
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 comprising 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 very applicable for pump-probe spectroscopy at, e.g., free-electron lasers or as efficient drivers for secondary frequency conversion stages. Published by The Optical Society under the terms of the Creative Commons Attribution 4.0 License.
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