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  <ref-type name="Journal Article">17</ref-type>
  <contributors>
    <authors>
      <author>Khalil, Yahia</author>
      <author>Bahri, Mehran</author>
      <author>Klenke, Arno</author>
      <author>Jauregui, Cesar</author>
      <author>Wanitschke, Felix</author>
      <author>Nold, Johannes</author>
      <author>Kuhn, Stefan</author>
      <author>Haarlammert, Nicoletta</author>
      <author>Schreiber, Thomas</author>
      <author>Limpert, Jens</author>
    </authors>
    <subsidiary-authors>
      <author>JHL</author>
    </subsidiary-authors>
  </contributors>
  <titles>
    <title>3 × 3 multicore, Yb-doped fiber amplifier with 3.2 kW output power</title>
    <secondary-title>Optics letters</secondary-title>
  </titles>
  <periodical>
    <full-title>Optics letters</full-title>
  </periodical>
  <publisher>Soc.</publisher>
  <pub-location>Washington, DC</pub-location>
  <isbn>0146-9592</isbn>
  <electronic-resource-num>10.1364/OL.591257</electronic-resource-num>
  <pages>1677</pages>
  <number>6</number>
  <volume>51</volume>
  <abstract/>
  <notes>
    <note>Supported by BMBF under grant # 13N15244 ; </note>
  </notes>
  <label>PUB:(DE-HGF)16, ; 0, ; </label>
  <keywords/>
  <accession-num>WOS:001718865300036</accession-num>
  <work-type>Journal Article</work-type>
  <dates>
    <pub-dates>
      <year>2026</year>
    </pub-dates>
  </dates>
  <accession-num>GSI-2026-00552</accession-num>
  <year>2026</year>
  <custom6>pmid:41824740</custom6>
  <urls>
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      <url>https://repository.gsi.de/record/366651</url>
      <url>https://doi.org/10.1364/OL.591257</url>
      <url>&lt;Go to ISI&gt;://WOS:001718865300036</url>
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