• DocumentCode
    3691461
  • Title

    Ultrabroadband THz emission with controlled wave-front from LTG GaAs large area interdigitated photoconductive antenna

  • Author

    M. Baillergeau;T. Nirrengarten;K. Maussang;A. Acquaviva;J. Palomo;S. Dhillon;J. Tignon;J. Mangeney

  • Author_Institution
    Laboratoire Pierre Aigrain, Ecole Normale Supé
  • fYear
    2015
  • Firstpage
    1
  • Lastpage
    2
  • Abstract
    We demonstrate THz pulses emitted by LTG GaAs large area interdigitated photoconductive antennas with frequency components from 0.3 to 20 THz. The THz radiation is characterized with a 20-μm thick ZnTe crystal and the dynamic range reaches 60 dB. Under an original optical excitation scheme, the emitted THz pulses show frequency-independent spherical wave front, which provides focusing of the THz beam close to the diffraction limit.
  • Keywords
    "Gallium arsenide","Optical pulses","Broadband antennas","Focusing","Optical diffraction","Optical beams"
  • Publisher
    ieee
  • Conference_Titel
    Infrared, Millimeter, and Terahertz waves (IRMMW-THz), 2015 40th International Conference on
  • ISSN
    2162-2027
  • Electronic_ISBN
    2162-2035
  • Type

    conf

  • DOI
    10.1109/IRMMW-THz.2015.7327615
  • Filename
    7327615
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=3691461