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7 March 2019 Tm:fiber CPA driven nonlinear pulse compression stage delivering multi-GW, sub-10 fs pulses at 20 W of average power
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Abstract
We report on the generation of 102 μJ-, sub-2 cycle pulses with several GW of peak power centered at 1.73 μm wavelength. The intense few-cycle source features 8.8 fs pulse duration (full-width at half maximum, FWHM). It is operated at 196 kHz pulse repetition rate and provides a record average power of 20 W. This result is enabled by the combination of two average power scalable concepts: direct emission from an ultrafast Tm-doped fiber laser system and nonlinear pulse compression in a gas-filled antiresonant hollow-core fiber. Ultrafast Tm-doped fiber lasers are scalable to kW-level average power, which emphasizes the great potential of this approach for driving high cut-off HHG at high repetition rates.
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Martin Gebhardt, Christian Gaida, Tobias Heuermann, Cesar Jauregui, Jose Antonio-Lopez, Axel Schulzgen, Rodrigo Amezcua-Correa, Jan Rothhardt, and Jens Limpert "Tm:fiber CPA driven nonlinear pulse compression stage delivering multi-GW, sub-10 fs pulses at 20 W of average power ", Proc. SPIE 10897, Fiber Lasers XVI: Technology and Systems, 108971E (7 March 2019); https://doi.org/10.1117/12.2509650
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