• DocumentCode
    3691501
  • Title

    Time- and frequency-resolved electrodynamics of germanium nanoantennas for mid-infrared plasmonics

  • Author

    Michele Ortolani;Marco P. Fischer;Leonetta Baldassarre;Antonio Samarelli;Kevin Gallacher;Jacopo Frigerio;Valeria Giliberti;Emilie Sakat;Christian Schmidt;Alfred Leitenstorfer;Brida Daniele;Giovanni Isella;Douglas J. Paul;Paolo Biagioni

  • Author_Institution
    Department of Physics, Sapienza University of Rome, Rome, 00185 Italy
  • fYear
    2015
  • Firstpage
    1
  • Lastpage
    2
  • Abstract
    We investigate the mid-infrared response of heavily doped germanium films and periodic arrays of nanoantennas by both continuous wave transmission/reflection spectroscopy and ultrafast pump-probe spectroscopy. We compare the data to finite-element modeling electromagnetic simulations of the subwavelength nanostructures. The plasma frequency of the doped or optically activated semiconductor extends in the 1000-2000 cm-1 range thus enabling access to molecular fingerprints.
  • Keywords
    "Plasmons","Optical pumping","Optical device fabrication","Optical films","Optical reflection"
  • 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.2015.7327717
  • Filename
    7327717
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=3691501