• DocumentCode
    153154
  • Title

    Single-frequency terahertz source based on difference frequency generation in an enhancement cavity

  • Author

    Scheller, M. ; Paul, Justin R. ; Laurain, Alexandre ; Young, Abram ; Koch, S.W. ; Moloney, Jerome V.

  • Author_Institution
    Desert Beam Technol. LLC, Tucson, AZ, USA
  • fYear
    2014
  • fDate
    14-19 Sept. 2014
  • Firstpage
    1
  • Lastpage
    2
  • Abstract
    We demonstrate a continuous wave, single-frequency terahertz (THz) source with a linewidth less than 100 kHz. The emitted THz power at 1.9 THz exceeds 100 μW. The source is based on difference frequency generation within an optical enhancement cavity. Two single-frequency semiconductor disc lasers with infrared emission wavelengths spaced by 6.8 nm are used as pump lasers for the nonlinear conversion. To increase the efficiency of the THz generation, the infrared intensity is enhanced by a factor of 100 by phase locking of the two lasers to the external cavity.
  • Keywords
    semiconductor lasers; terahertz wave imaging; difference frequency generation; enhancement cavity; frequency 1.9 THz; nonlinear conversion; single-frequency terahertz source; Cavity resonators; Crystals; Laser excitation; Lenses; Local oscillators; Vertical cavity surface emitting lasers;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    Infrared, Millimeter, and Terahertz waves (IRMMW-THz), 2014 39th International Conference on
  • Conference_Location
    Tucson, AZ
  • Type

    conf

  • DOI
    10.1109/IRMMW-THz.2014.6956290
  • Filename
    6956290
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=153154