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@ARTICLE{Singh:617391,
      author       = {Singh, Neetesh Kumar and Lorenzen, Jan and Wang, Kai and
                      Gaafar, Mahmoud and Sinobad, Milan and Francis, Henry and
                      Edelmann, Marvin and Geiselmann, Michael and Herr, Tobias
                      and Garcia-Blanco, Sonia and Kärtner, Franz},
      title        = {{W}att-class {CMOS}-compatible optical high power
                      amplifier},
      journal      = {Nature photonics},
      volume       = {NA},
      issn         = {1749-4885},
      address      = {London [u.a.]},
      publisher    = {Nature Publ. Group},
      reportid     = {PUBDB-2024-06752},
      pages        = {1-8},
      year         = {2025},
      note         = {https://doi.org/10.1038/s41566-024-01587-9},
      abstract     = {High power amplifiers are critical components in optical
                      systems spanning from long range optical sensing and optical
                      communication systems to micromachining and medical surgery.
                      Today, integrated photonics with its promise of large
                      reductions in size, weight and cost cannot be used in these
                      applications, due to the lack of on-chip high power
                      amplifiers. Integrated devices severely lack in output power
                      due to their small size which limits energy storage
                      capacity. For the last two decades, large mode area (LMA)
                      technology has played a disruptive role in fiber amplifiers
                      enabling a dramatic increase of output power and energy by
                      orders of magnitude. Thanks to the capability of LMA fiber
                      to support significantly larger optical modes the energy
                      storage and power handling capability has significantly
                      increased. Therefore, an LMA device on an integrated
                      platform can play a similar role in power and energy scaling
                      of integrated devices. In this work, we demonstrate LMA
                      waveguide-based CMOS compatible watt-class high power
                      amplifiers with an on-chip output power reaching beyond ~ 1
                      W within a footprint of only ~ 4 mm2. The power achieved is
                      comparable and even surpasses many fiber-based amplifiers.
                      We believe this work has the potential to radically change
                      the integrated photonics application landscape, allowing
                      power levels previously unimaginable from an integrated
                      device replacing much of today’s benchtop systems.
                      Moreover, mass producibility, reduced size, weight and cost
                      will enable yet unforeseen applications for laser
                      technology.},
      cin          = {FS-CFEL-2},
      ddc          = {530},
      cid          = {I:(DE-H253)FS-CFEL-2-20120731},
      pnm          = {631 - Matter – Dynamics, Mechanisms and Control
                      (POF4-631) / FEMTOCHIP - FEMTOSECOND LASER ON A CHIP
                      (965124) / DFG project G:(GEPRIS)403188360 -
                      Ultrabreitbandiger Photonisch-Elektronischer
                      Analog-Digital-Wandler (PACE) - Phase 2 (403188360) /
                      VH-NG-1404 - Ultra-fast nonlinear microphotonics
                      $(G:(DE-HGF)2019_VH-NG-1404)$ / STARCHIP -
                      Microphotonics-based frequency combs for habitable exoplanet
                      detection (853564)},
      pid          = {G:(DE-HGF)POF4-631 / G:(EU-Grant)965124 /
                      G:(GEPRIS)403188360 / $G:(DE-HGF)2019_VH-NG-1404$ /
                      G:(EU-Grant)853564},
      experiment   = {EXP:(DE-H253)CFEL-Exp-20150101},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:001393027900001},
      doi          = {10.1038/s41566-024-01587-9},
      url          = {https://bib-pubdb1.desy.de/record/617391},
}