• DocumentCode
    3015105
  • Title

    Low-Divergence Surface-Emitting Terahertz Quantum Cascade Lasers

  • Author

    Fan, Jonathan A. ; Belkin, Mikhail A. ; Capasso, Federico ; Khanna, Suraj ; Lachab, Mohamed ; Davies, Giles ; Linfield, Edmund H.

  • Author_Institution
    Harvard Univ., Cambridge
  • fYear
    2007
  • fDate
    6-11 May 2007
  • Firstpage
    1
  • Lastpage
    2
  • Abstract
    We investigate surface-emission via a second-order grating in terahertz quantum cascade lasers. We optimize grating design and suppress facet reflectivity with absorbing waveguide edges. Single-mode lasing, small beam divergence, and improved slope efficiency are observed.
  • Keywords
    diffraction gratings; laser beams; laser modes; quantum cascade lasers; reflectivity; submillimetre wave lasers; surface emitting lasers; waveguide lasers; facet reflectivity; low-beam divergence surface-emitting lasers; second-order grating design; single-mode lasing; slope efficiency; terahertz quantum cascade lasers; waveguide edges; Frequency; Gratings; Laser modes; Optical surface waves; Optical waveguides; Quantum cascade lasers; Surface emitting lasers; Testing; Vertical cavity surface emitting lasers; Waveguide lasers;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    Lasers and Electro-Optics, 2007. CLEO 2007. Conference on
  • Conference_Location
    Baltimore, MD
  • Print_ISBN
    978-1-55752-834-6
  • Type

    conf

  • DOI
    10.1109/CLEO.2007.4453166
  • Filename
    4453166
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=3015105