• DocumentCode
    1460964
  • Title

    Small-divergence singlemode emitting tapered distributed-feedback quantum cascade lasers

  • Author

    Zhang, Wensheng ; Wang, Lingfeng ; Li, Luoqing ; Liu, Jiangchuan ; Liu, Feng-Qi ; Wang, Zhen

  • Author_Institution
    Key Lab. of Semicond. Mater. Sci., Chinese Acad. of Sci., Beijing, China
  • Volume
    46
  • Issue
    7
  • fYear
    2010
  • Firstpage
    528
  • Lastpage
    529
  • Abstract
    A tapered distributed feedback quantum cascade laser emitting at ?? ~ 8.1 ??m is reported. Utilising a tapered waveguide structure with a surface metal grating, the device exhibited singlemode operation over the temperature range of 100 to 214 K, with sidemode suppression ratio > 20 dB and a nearly diffraction limited far-field beam divergence angle of 5.4??.
  • Keywords
    molecular beam epitaxial growth; quantum cascade lasers; small-divergence singlemode emitting tapered distributed-feedback quantum cascade lasers; surface metal grating; temperature 100 K to 214 K;
  • fLanguage
    English
  • Journal_Title
    Electronics Letters
  • Publisher
    iet
  • ISSN
    0013-5194
  • Type

    jour

  • DOI
    10.1049/el.2010.0554
  • Filename
    5442133
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1460964