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@ARTICLE{Ludwig:612774,
      author       = {Ludwig, Markus and Ayhan, Furkan and Schmidt, Tobias M. and
                      Wildi, Thibault and Voumard, Thibault and Blum, Roman and
                      Ye, Zhichao and Lei, Fuchuan and Wildi, François and Pepe,
                      Francesco and Gaafar, Mahmoud A. and Obrzud, Ewelina and
                      Grassani, Davide and Moreau, François and Chazelas, Bruno
                      and Sottile, Rico and Torres-Company, Victor and Brasch,
                      Victor and Villanueva, Luis G. and Bouchy, François and
                      Herr, Tobias},
      title        = {{U}ltraviolet astronomical spectrograph calibration with
                      laser frequency combs from nanophotonic lithium niobate
                      waveguides},
      journal      = {Nature Communications},
      volume       = {15},
      number       = {1},
      issn         = {2041-1723},
      address      = {[London]},
      publisher    = {Nature Publishing Group UK},
      reportid     = {PUBDB-2024-05459},
      pages        = {7614},
      year         = {2024},
      abstract     = {Astronomical precision spectroscopy underpins searches for
                      life beyond Earth, direct observation of the expanding
                      Universe and constraining the potential variability of
                      physical constants across cosmological scales. Laser
                      frequency combs can provide the critically required accurate
                      and precise calibration to the astronomical spectrographs.
                      For cosmological studies, extending the calibration with
                      such astrocombs to the ultraviolet spectral range is highly
                      desirable, however, strong material dispersion and large
                      spectral separation from the established infrared laser
                      oscillators have made this exceedingly challenging. Here, we
                      demonstrate for the first time astronomical spectrograph
                      calibrations with an astrocomb in the ultraviolet spectral
                      range below 400 nm. This is accomplished via chip-integrated
                      highly nonlinear photonics in periodically-poled,
                      nano-fabricated lithium niobate waveguides in conjunction
                      with a robust infrared electro-optic comb generator, as well
                      as a chip-integrated microresonator comb. These results
                      demonstrate a viable route towards astronomical precision
                      spectroscopy in the ultraviolet and may contribute to
                      unlocking the full potential of next generation ground- and
                      future space-based astronomical instruments.},
      cin          = {FS-CFEL-2-UMP},
      ddc          = {500},
      cid          = {I:(DE-H253)FS-CFEL-2-UMP-20201209},
      pnm          = {631 - Matter – Dynamics, Mechanisms and Control
                      (POF4-631) / STARCHIP - Microphotonics-based frequency combs
                      for habitable exoplanet detection (853564) / VH-NG-1404 -
                      Ultra-fast nonlinear microphotonics
                      $(G:(DE-HGF)2019_VH-NG-1404)$ / DarkComb - Dark-Soliton
                      Engineering in Microresonator Frequency Combs (771410)},
      pid          = {G:(DE-HGF)POF4-631 / G:(EU-Grant)853564 /
                      $G:(DE-HGF)2019_VH-NG-1404$ / G:(EU-Grant)771410},
      experiment   = {EXP:(DE-H253)CFEL-Exp-20150101},
      typ          = {PUB:(DE-HGF)16},
      eprint       = {2306.13609},
      howpublished = {arXiv:2306.13609},
      archivePrefix = {arXiv},
      SLACcitation = {$\%\%CITATION$ = $arXiv:2306.13609;\%\%$},
      pubmed       = {39223131},
      UT           = {WOS:001304177200014},
      doi          = {10.1038/s41467-024-51560-x},
      url          = {https://bib-pubdb1.desy.de/record/612774},
}