• DocumentCode
    3273330
  • Title

    Spectral gain narrowing in THz quantum cascade lasers

  • Author

    Dhillon, S. ; Jukam, N. ; Oustinov, D. ; Zhao, Z.-Y. ; Hameau, S. ; Barbieri, S. ; Vasanelli, A. ; Filloux, P. ; Marcadet, X. ; Sirtori, C. ; Tignon, J.

  • Author_Institution
    Lab. Pierre Aigrain, Ecole Normale Super., Paris
  • fYear
    2008
  • fDate
    15-19 Sept. 2008
  • Firstpage
    1
  • Lastpage
    2
  • Abstract
    Terahertz time-domain spectroscopy is used to determine gain related parameters of terahertz quantum-cascade lasers. Due to the techniquespsila insensitivity to the QCL emission, spectral gain narrowing is observed above laser threshold. By correlating these measurements with bandstructure simulations, insight into the subband alignment as a function of the applied field is acquired.
  • Keywords
    band structure; laser beams; quantum cascade lasers; submillimetre wave lasers; terahertz spectroscopy; bandstructure simulations; laser threshold; spectral gain narrowing; terahertz quantum cascade lasers; terahertz time-domain spectroscopy; Frequency; Laser transitions; Lasers and electrooptics; Optical pulses; Power lasers; Pulse amplifiers; Quantum cascade lasers; Semiconductor lasers; Spectroscopy; Stimulated emission;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    Infrared, Millimeter and Terahertz Waves, 2008. IRMMW-THz 2008. 33rd International Conference on
  • Conference_Location
    Pasadena, CA
  • Print_ISBN
    978-1-4244-2119-0
  • Electronic_ISBN
    978-1-4244-2120-6
  • Type

    conf

  • DOI
    10.1109/ICIMW.2008.4665460
  • Filename
    4665460
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=3273330