• DocumentCode
    3691620
  • Title

    Performance of the 4.7-THz local oscillator with quantum cascade laser on board of SOFIA

  • Author

    H. Richter;M. Greiner-Bär;M. Wienold;L. Schrottke;K. Biermann;H. T. Grahn;H.-W. Hübers

  • Author_Institution
    Institute of Optical Sensor Systems, German Aerospace Center (DLR), Rutherfordstr. 2, 12489 Berlin, Germany
  • fYear
    2015
  • Firstpage
    1
  • Lastpage
    1
  • Abstract
    Summary form only given. The design and the performance of a 4.7-THz local oscillator (LO) for the GREAT (German REceiver for Astronomy at Terahertz frequencies) heterodyne spectrometer on SOFIA, the Stratospheric Observatory for Infrared Astronomy, are presented. The LO is based on a quantum-cascade laser, which is mounted in a compact mechanical cryocooler. It delivers up to 150 μW output power into a nearly Gaussian shaped beam around the frequency of the fine structure line of neutral atomic oxygen, OI, at 4.7448 THz.
  • Keywords
    "Quantum cascade lasers","Local oscillators","Power generation","Laser beams","Receivers","Astronomy","Frequency measurement"
  • 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.2015.7327877
  • Filename
    7327877
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=3691620