• DocumentCode
    1065930
  • Title

    Pump saturation in molecular far-infrared lasers

  • Author

    Weiss, C.O.

  • Author_Institution
    Physikalisch-Technische Bundesanstalt, Braunschweig, Germany
  • Volume
    12
  • Issue
    10
  • fYear
    1976
  • fDate
    10/1/1976 12:00:00 AM
  • Firstpage
    580
  • Lastpage
    584
  • Abstract
    Precise absorption measurements on vibration-rotation transitions pumping far-infrared (FIR) laser transitions in HCOOH, CH3OH, CH3I and CH3F were carried out using a frequency-stabilized and intensity-controlled CO2laser. Linear absorption coefficients and saturation intensities as a function of pressure are obtained. With the help of a rate equation model it is concluded that within the pressure range relevant for CW FIR lasers the rate of deexcitation of pumped molecules is limited by rotational relaxation. For CH3F, limitation by diffusion of excited molecules to the cell wall is observed.
  • Keywords
    Absorption; Equations; Finite impulse response filter; Frequency measurement; Laser excitation; Laser modes; Laser transitions; Optical pumping; Pump lasers; Vibration measurement;
  • fLanguage
    English
  • Journal_Title
    Quantum Electronics, IEEE Journal of
  • Publisher
    ieee
  • ISSN
    0018-9197
  • Type

    jour

  • DOI
    10.1109/JQE.1976.1069049
  • Filename
    1069049
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1065930