• DocumentCode
    3691406
  • Title

    Waveguide-integrated terahertz-frequency quantum cascade lasers for detection of trace-gas species

  • Author

    Rui Dong;Alexander Valavanis;Yingjun Han;Iman Kundu;Matthew Oldfield;Nick Brewster;Lianhe Li;Chen Li;Jingxuan Zhu;Luke Bushnell;Brian N. Ellison;Paul Dean;Edmund H. Linfield;A. Giles Davies

  • Author_Institution
    University of Leeds, Leeds, West Yorkshire, LS2 9JT, UK
  • fYear
    2015
  • Firstpage
    1
  • Lastpage
    2
  • Abstract
    We demonstrate high-performance THz QCLs lasing at 2.2, 2.53, 3.5 and 4.7 THz, which target absorption lines of water, methane, hydroxyl and atomic oxygen respectively. Reliable single-mode targeting of gas species is obtained through the use of a photonic lattice design. A highly reproducible micro-machined waveguide block yields narrow beam-divergence and enables future integration of a complete THz heterodyne system including local-oscillator, mixer, and feed-horn.
  • Keywords
    "Quantum cascade lasers","Optical waveguides","Laser beams","Photonics","Lattices","Robustness","Optical device fabrication"
  • Publisher
    ieee
  • Conference_Titel
    Infrared, Millimeter, and Terahertz waves (IRMMW-THz), 2015 40th International Conference on
  • ISSN
    2162-2027
  • Electronic_ISBN
    2162-2035
  • Type

    conf

  • DOI
    10.1109/IRMMW-THz.2015.7327559
  • Filename
    7327559
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=3691406