@article{Keller2022-04-01Subth-57374,
  year={2022},
  doi={10.1364/OL.447295},
  title={Sub-three-cycle pulses at 2 µm from a degenerate optical parametric amplifier},
  number={7},
  volume={47},
  issn={0146-9592},
  journal={Optics Letters},
  pages={1594--1597},
  author={Keller, K. R. and Budweg, Arne and Allerbeck, Jonas and Brida, Daniele}
}

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    <dc:creator>Brida, Daniele</dc:creator>
    <dc:creator>Allerbeck, Jonas</dc:creator>
    <dc:contributor>Brida, Daniele</dc:contributor>
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    <dcterms:abstract xml:lang="eng">In this work we present a compact two-stage optical parametric amplifier (OPA) pumped at degeneracy by the fundamental of a Yb:KGW laser system. The output pulses span from 1.7 to 2.5 µm (120-176 THz) and are compressed to a sub-20 fs duration. This parametric amplifier exploits the broad phase-matching bandwidth at the degeneracy point in bismuth triborate (BiBO) and periodically poled lithium tantalate (PPLT). The result drastically expands the availability of ultrashort pulses with few-microjoule energy from near-infrared (NIR) to even longer wavelengths in the mid-infrared (MIR) spectral region.</dcterms:abstract>
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    <dc:contributor>Budweg, Arne</dc:contributor>
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