• DocumentCode
    2716481
  • Title

    Gain studies of phonon-depopulation based terahertz quantum cascade lasers using terahertz time domain spectroscopy

  • Author

    Dhillon, S. ; Jukam, N. ; Oustinov, D. ; Madeo, J. ; Rungsawang, R. ; Colombelli, R. ; Dean, P. ; Salih, M. ; Khanna, S.P. ; Linfield, E.H. ; Davies, A.G. ; Tignon, J.

  • Author_Institution
    Lab. Pierre Aigrain, UPMC, Paris, France
  • fYear
    2010
  • fDate
    5-10 Sept. 2010
  • Firstpage
    1
  • Lastpage
    1
  • Abstract
    Gain and losses in a LO-phonon THz QCL are studied using TDS. At threshold the gain clamps at 25cm-1 and the gain FWHM is 0.6THz. At low biases, absorption features are observed below and above the laser frequency. They are shown to originate from the population of a parasitic electronic channel.
  • Keywords
    microwave photonics; optical losses; phonons; quantum cascade lasers; terahertz wave spectra; absorption properties; gain clamps; laser frequency; longitudinal-optical phonon; parasitic electronic channel population; phonon-depopulation based terahertz quantum cascade lasers; terahertz time domain spectroscopy; Broadband antennas; Current density; Electric fields; Measurement by laser beam; Quantum cascade lasers;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    Infrared Millimeter and Terahertz Waves (IRMMW-THz), 2010 35th International Conference on
  • Conference_Location
    Rome
  • Print_ISBN
    978-1-4244-6655-9
  • Type

    conf

  • DOI
    10.1109/ICIMW.2010.5612816
  • Filename
    5612816
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=2716481