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@ARTICLE{Wang:172219,
      author       = {Wang, W.-M. and Gibbon, P. and Sheng, Z.-M. and Li, Y.-T.},
      title        = {{S}trong, tunable terahertz emission by two-color
                      picosecond laser irradiation},
      journal      = {Physical review / A},
      volume       = {90},
      number       = {2},
      issn         = {1050-2947},
      address      = {College Park, Md.},
      publisher    = {APS},
      reportid     = {FZJ-2014-05708},
      pages        = {023808},
      year         = {2014},
      abstract     = {It is shown by particle-in-cell simulations that powerful
                      terahertz (THz) radiation can be generated by picosecond
                      (ps) laser pulses below 10(14) W/cm(2) via a two-color laser
                      scheme. At such laser intensities, increasing the laser
                      duration can result in significant enhancement in THz
                      intensities. From 0.03 ps to 0.9 ps the enhancement climbs
                      to nearly 40x before saturating until 2 ps. This
                      demonstrates that low intensity, readily available ps laser
                      technology could be utilized for driving powerful THz
                      sources. By contrast, for laser intensities high enough to
                      completely ionize the gas medium, it is found that the THz
                      emission decreases with increasing pulse duration: optimal
                      conversion is found for few-femtosecond drivers.},
      cin          = {JSC},
      ddc          = {530},
      cid          = {I:(DE-Juel1)JSC-20090406},
      pnm          = {411 - Computational Science and Mathematical Methods
                      (POF2-411)},
      pid          = {G:(DE-HGF)POF2-411},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000339994100006},
      doi          = {10.1103/PhysRevA.90.023808},
      url          = {https://juser.fz-juelich.de/record/172219},
}