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@ARTICLE{Qu:903410,
      author       = {Qu, J. F. and Liu, P. and Liu, X. Y. and Gray, R. J. and
                      McKenna, P. and Li, Xiaofeng and Kawata, S. and Kong, Q.},
      title        = {{R}elativistic mid-wavelength infrared pulses generated in
                      intense-laser mass-limited target interactions},
      journal      = {New journal of physics},
      volume       = {22},
      number       = {9},
      issn         = {1367-2630},
      address      = {[London]},
      publisher    = {IOP},
      reportid     = {FZJ-2021-05092},
      pages        = {093007 -},
      year         = {2020},
      abstract     = {Infrared spectroscopy, ultra-fast x-ray high harmonic
                      generation, and time-resolved imaging of molecular
                      structures benefit from the availability of intense
                      mid-infrared wavelength pulses. Here we present a new
                      approach to generating these, in which an intense short
                      laser pulse is incident upon a near-critical density,
                      spherical, mass-limited carbon target. After the laser pulse
                      interaction, the carbon ions produced form a central force
                      field. Plasma electrons accelerated by the laser return to
                      the positively charged carbon target under the action of
                      this field. The energy of these electrons is reduced and is
                      lower than their energy in the laser field. These low-energy
                      refluxing electrons start to oscillate with a rotating
                      figure-of-eight motion around the positively charged carbon
                      target and emit relativistically intense mid-infrared pulses
                      with the wavelength in the range 1 to 4 μm.},
      cin          = {JSC},
      ddc          = {530},
      cid          = {I:(DE-Juel1)JSC-20090406},
      pnm          = {5111 - Domain-Specific Simulation $\&$ Data Life Cycle Labs
                      (SDLs) and Research Groups (POF4-511)},
      pid          = {G:(DE-HGF)POF4-5111},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000568310100001},
      doi          = {10.1088/1367-2630/abaab0},
      url          = {https://juser.fz-juelich.de/record/903410},
}