DocumentCode :
1095452
Title :
The CW optically pumped 12.08µm Raman laser theory and experiments for high power-conversion efficiency
Author :
Julien, Francois ; Wazen, Paul ; Lourtioz, Jean-Michael ; De Temple, Thomas A.
Author_Institution :
Institut d́Electronique Fondamentale, Université Paris, Orsay, France
Volume :
19
Issue :
11
fYear :
1983
fDate :
11/1/1983 12:00:00 AM
Firstpage :
1654
Lastpage :
1662
Abstract :
A model is developed to predict the performance of the continuous-wave CO2-pnmped 12.08 μm NH3laser which is operated by a two-photon or Raman-like process. The local gain and pump absorption are determined from a two-wave three-level treatment based on the density matrix formalism. A ring cavity configuration is considered and interaction of the two intensities inside the cavity are described using coupled wave equations. The subsequent 12.08μm output intensity is calculated for a wide range of operational parameters (injected pump intensity, NH3gas pressure, pump frequency offset, gain length, output coupling,... ). For a well optimized system, power-conversion efficiencies of 10-30 percent should be realistically obtained by pumping with a conventional CW CO2laser. Experiments illustrating the major conclusions are described.
Keywords :
Ammonia materials/devices; CW lasers; Carbon dioxide lasers; Gas lasers; Infrared lasers; Optical pumping; Raman lasers; Absorption; Laser excitation; Laser modes; Laser theory; Optical pumping; Power lasers; Predictive models; Pump lasers; Ring lasers; Stimulated emission;
fLanguage :
English
Journal_Title :
Quantum Electronics, IEEE Journal of
Publisher :
ieee
ISSN :
0018-9197
Type :
jour
DOI :
10.1109/JQE.1983.1071775
Filename :
1071775
Link To Document :
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