@article{Dietz2020-04-13Ultra-50766,
  year={2020},
  doi={10.1364/OE.383926},
  title={Ultrafast thin-disk multi-pass amplifier system providing 1.9 kW of average output power and pulse energies in the 10 mJ range at 1 ps of pulse duration for glass-cleaving applications},
  number={8},
  volume={28},
  journal={Optics Express},
  pages={11415--11423},
  author={Dietz, Thomas and Jenne, Michael and Bauer, Dominik and Scharun, Michael and Sutter, Dirk and Killi, Alexander}
}

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    <dc:contributor>Bauer, Dominik</dc:contributor>
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    <dc:creator>Bauer, Dominik</dc:creator>
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    <dc:contributor>Jenne, Michael</dc:contributor>
    <dc:language>eng</dc:language>
    <dc:contributor>Scharun, Michael</dc:contributor>
    <dc:contributor>Killi, Alexander</dc:contributor>
    <dc:contributor>Sutter, Dirk</dc:contributor>
    <dcterms:issued>2020-04-13</dcterms:issued>
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    <dc:creator>Killi, Alexander</dc:creator>
    <dcterms:title>Ultrafast thin-disk multi-pass amplifier system providing 1.9 kW of average output power and pulse energies in the 10 mJ range at 1 ps of pulse duration for glass-cleaving applications</dcterms:title>
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    <dc:creator>Sutter, Dirk</dc:creator>
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    <dc:creator>Jenne, Michael</dc:creator>
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    <dc:creator>Scharun, Michael</dc:creator>
    <dc:contributor>Dietz, Thomas</dc:contributor>
    <dcterms:abstract xml:lang="eng">An ultrafast Yb-doped thin-disk multi-pass laser amplifier system with flexible parameters for material processing is reported. We can generate bursts consisting of four pulses at a distance of 20 ns and a total energy of 46.7 mJ at a repetition rate of 25 kHz. In single-pulse operation, 1.5 kW of average output is achieved at 400 kHz when optimizing for a beam quality of M&lt;sup&gt;2&lt;/sup&gt; = 1.5. Alignment for maximum output power provides 1.9 kW at the same repetition rate. All results are obtained without chirped-pulse amplification in the multi-pass set-up. The application potential of the system is demonstrated exploring its performance in materials processing of dielectrics. Cleaving of 3.8-mm-thick SCHOTT borofloat glass with a velocity of 1200 mm/s is demonstrated with 300 W of input power. Single-pass modification of 30 mm borosilicate glass is enabled with a Bessel beam at 1 kW of average power delivered by four-pulse bursts of an energy of 30 mJ.</dcterms:abstract>
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    <dc:creator>Dietz, Thomas</dc:creator>
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