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@ARTICLE{TancogneDejean:392831,
      author       = {Tancogne-Dejean, Nicolas and Muecke, Oliver and Kärtner,
                      Franz X. and Rubio, Angel},
      title        = {{E}llipticity dependence of high-harmonic generation in
                      solids originating from coupled intraband and interband
                      dynamics},
      journal      = {Nature Communications},
      volume       = {8},
      number       = {1},
      issn         = {2041-1723},
      address      = {London},
      publisher    = {Nature Publishing Group},
      reportid     = {PUBDB-2017-11098},
      pages        = {745},
      year         = {2017},
      abstract     = {The strong ellipticity dependence of high-harmonic
                      generation (HHG) in gases enables numerous experimental
                      techniques that are nowadays routinely used, for instance,
                      to create isolated attosecond pulses. Extending such
                      techniques to solids requires a fundamental understanding of
                      the microscopic mechanism of HHG. Here we use
                      first-principles simulations within a time-dependent
                      density-functional framework and show how intraband and
                      interband mechanisms are strongly and differently affected
                      by the ellipticity of the driving laser field. The complex
                      interplay between intraband and interband effects can be
                      used to tune and improve harmonic emission in solids. In
                      particular, we show that the high-harmonic plateau can be
                      extended by as much as $30\%$ using a finite ellipticity of
                      the driving field. We furthermore demonstrate the
                      possibility to generate, from single circularly polarized
                      drivers, circularly polarized harmonics. Our work shows that
                      ellipticity provides an additional knob to experimentally
                      optimize HHG in solids.},
      cin          = {CFEL-UFOX / FS-CFEL-2 / CFEL-MPT / UNI/CUI},
      ddc          = {500},
      cid          = {I:(DE-H253)CFEL-UFOX-20160927 /
                      I:(DE-H253)FS-CFEL-2-20120731 / I:(DE-H253)CFEL-MPT-20160915
                      / $I:(DE-H253)UNI_CUI-20121230$},
      pnm          = {6211 - Extreme States of Matter: From Cold Ions to Hot
                      Plasmas (POF3-621) / DFG project 281310551 - SOLSTICE -
                      Festkörper in starken terahertz und
                      infrarotenTräger-Einhüllende phasenstabilen Wellenformen
                      (281310551) / CUI - Hamburger Zentrum für ultraschnelle
                      Beobachtung (194651731)},
      pid          = {G:(DE-HGF)POF3-6211 / G:(GEPRIS)281310551 /
                      G:(GEPRIS)194651731},
      experiment   = {EXP:(DE-H253)CFEL-Exp-20150101},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {pmid:28963478},
      UT           = {WOS:000412052400012},
      doi          = {10.1038/s41467-017-00764-5},
      url          = {https://bib-pubdb1.desy.de/record/392831},
}