Ultrafast pump-probe spectroscopy in gallium arsenide at 25 T

Academic Article


  • We have performed high-fluence, nondegenerate pump-probe spectroscopy in the Split Florida-Helix magnet at 25 T and 15 K. The electronic component of our ultrafast differential reflectivity can be described with a simplified four-level approximation to determine the scattering and recombination rates. Ultrafast oscillations are well described by a coherent acoustic phonon model. Our free-space ultrafast spectroscopic technique will permit future experimental investigations to study novel photoinduced phase transitions and complex interactions in correlated electron systems, which will require the high pulse energies of our free-space alternative.
  • Authors

    Published In

  • Optics Letters  Journal
  • Digital Object Identifier (doi)

    Pubmed Id

  • 15872006
  • Author List

  • Curtis JA; Tokumoto T; Nolan NK; McClintock LM; Cherian JG; McGill SA; Hilton DJ
  • Start Page

  • 5772
  • End Page

  • 5775
  • Volume

  • 39
  • Issue

  • 19