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@ARTICLE{Aleshire:597826,
      author       = {Aleshire, Christopher and Eichner, Timo and Steinkopff,
                      Albrecht and Klenke, Arno and Jauregui, Cesar and Palmer,
                      Guido and Kuehn, Stefan and Nold, Johannes and Haarlammert,
                      Nicoletta and Leemans, Wim and Schreiber, Thomas and Maier,
                      Andreas and Limpert, Jens},
      title        = {{F}requency-doubled {Q}-switched 4 × 4 multicore fiber
                      laser system},
      journal      = {Optics letters},
      volume       = {48},
      number       = {8},
      issn         = {0146-9592},
      address      = {Washington, DC},
      publisher    = {Soc.},
      reportid     = {PUBDB-2023-06694},
      pages        = {2198 - 2201},
      year         = {2023},
      abstract     = {Frequency doubling of a Q-switched Yb-doped rod-type
                      4 × 4 multicore fiber (MCF) laser system is reported. A
                      second harmonic generation (SHG) efficiency of up to $52\%$
                      was achieved with type I non-critically phase-matched
                      lithium triborate (LBO), with a total SHG pulse energy of up
                      to 17 mJ obtained at 1 kHz repetition rate. The dense
                      parallel arrangement of amplifying cores into a shared pump
                      cladding enables a significant increase in the energy
                      capacity of active fibers. The frequency-doubled MCF
                      architecture is compatible with high-repetition-rate and
                      high-average-power operation and may provide an efficient
                      alternative to bulk solid-state systems as pump sources for
                      high-energy titanium-doped sapphire lasers.},
      cin          = {MLS / Eur.XFEL / XFEL-User / UNI/EXP},
      ddc          = {530},
      cid          = {I:(DE-H253)MLS-20210107 / $I:(DE-H253)Eur_XFEL-20120731$ /
                      I:(DE-H253)XFEL-User-20170713 /
                      $I:(DE-H253)UNI_EXP-20120731$},
      pnm          = {621 - Accelerator Research and Development (POF4-621)},
      pid          = {G:(DE-HGF)POF4-621},
      experiment   = {EXP:(DE-MLZ)NOSPEC-20140101},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {37058676},
      UT           = {WOS:000981253500007},
      doi          = {10.1364/OL.487334},
      url          = {https://bib-pubdb1.desy.de/record/597826},
}