• DocumentCode
    3618381
  • Title

    Optical two-photon absorption in GaAs measured by optical pump-terahertz probe spectroscopy

  • Author

    F. Kadlec;H. Nemec;P. Kuzel

  • Author_Institution
    Inst. of Phys., Acad. of Sci. of the Czech Republic, Prague, Czech Republic
  • fYear
    2004
  • fDate
    6/26/1905 12:00:00 AM
  • Firstpage
    497
  • Lastpage
    498
  • Abstract
    A novel scheme of optical pump-THz probe experiments was used to study the nonlinear absorption in GaAs. The crystal was excited by ultrashort laser pulses with wavelength 810 nm and fluences up to 4.2 mJ/cm/sup 2/, for which the single-photon absorption (SPA) saturates and the two-photon absorption (TPA) dominates. The TPA coefficient /spl beta/ and its anisotropy were determined.
  • Keywords
    "Optical pumping","Absorption","Gallium arsenide","Probes","Spectroscopy","Nonlinear optics","Optical saturation","Wavelength measurement","Laser excitation","Pump lasers"
  • Publisher
    ieee
  • Conference_Titel
    Infrared and Millimeter Waves, 2004 and 12th International Conference on Terahertz Electronics, 2004. Conference Digest of the 2004 Joint 29th International Conference on
  • Print_ISBN
    0-7803-8490-3
  • Type

    conf

  • DOI
    10.1109/ICIMW.2004.1422181
  • Filename
    1422181
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=3618381