• DocumentCode
    891776
  • Title

    Effects of injector barrier on performance of terahertz quantum-cascade lasers

  • Author

    Luo, H. ; Laframboise, S.R. ; Wasilewski, Z.R. ; Liu, H.C.

  • Author_Institution
    Inst. for Microstruct. Sci., Nat. Res. Council of Canada, Ottawa, ON
  • Volume
    43
  • Issue
    11
  • fYear
    2007
  • Firstpage
    633
  • Lastpage
    635
  • Abstract
    An experimental study of the effects of injector barrier thickness on the performance of terahertz quantum-cascade lasers is reported. The injector barrier is varied from 54 to 38 Aring in an otherwise identical 3.4 THz laser structure. It is shown that the threshold current density at 10 K increases monotonically from 445 A/cm2 to 1.29 kA/cm2 with reducing barrier thickness. On the other hand, an optimum injector barrier thickness of 44 Aring is found to give rise to a maximum lasing temperature of 141 K.
  • Keywords
    current density; quantum cascade lasers; submillimetre wave lasers; injector barrier thickness; lasing temperature; size 38 angstrom to 54 angstrom; temperature 141 K; terahertz quantum-cascade lasers; threshold current density;
  • fLanguage
    English
  • Journal_Title
    Electronics Letters
  • Publisher
    iet
  • ISSN
    0013-5194
  • Type

    jour

  • DOI
    10.1049/el:20070578
  • Filename
    4216364
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=891776