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Meccanica

, Volume 10, Issue 2, pp 114–119 | Cite as

Radiant energy extraction from a gasdynamic laser. Static behavior

  • Massimo Germano
Article
  • 17 Downloads

Summary

The radiant energy extraction from a gasdynamic laser has been analyzed. The considered system of energy extraction is the MOPA one, in which the flowing gas medium is used as a Power Amplifier of a Master Oscillator, a primary laser beam introduced in the gas in which an inversion has been achieved. The analysis has been performed in general terms, in order to evaluate in a simple way the effect of the beam inclination, the effect of the losses due to the collisional relaxation and to the turbulent scattering and the effect of the ratio between the primary laser flux and the maximum available laser flux in static conditions.

Keywords

Laser Beam Civil Engineer Static Condition General Term Power Amplifier 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Sommario

S'è studiata l'estrazione di energia radiante da un laser gasdinamico. Il sistema di estrazione analizzato è quello MOPA, cioè quello in cui il mezzo è sostanzialmente usato come amplificatore, (Power Amplifier), di un fascio primario, (Master Oscillator), immesso nel gas stesso in cui è stata realizzata l'inversione delle popolazioni. Lo studio è stato condotto con criteri di generalità, al fine di valutare il più semplicemente possibile l'effetto dell'inclinazione del fascio laser sull'asse, delle perdite per diseccitazione collisionale e per la diffusione nel mezzo, l'effetto del rapporto tra flusso primario entrante e flusso totale estraibile dal gas in condizioni stazionarie.

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References

  1. 1.
    Anderson J. D., Jr. “Gasdynamic Lasers; Theory, Experiment and the State of the Arts,” p. 121. High Power Gas Lasers Von Kármán Institute for Fluid Dynamics. Lecture Series 65, March 1974.Google Scholar
  2. 2.
    Anderson J. D., Jr. “Time dependent Analysis of Population Inversions in an Expanding Gas,”Phys. Fluids, 13, 1983, (1970).CrossRefMATHGoogle Scholar
  3. 3.
    Basov N. G., Mikhailov V. G., Oraevskii A. N., Scheglov V. A. “Molecular Population Inversion in the Supersonic Flow of a Binary Gas in a Laval Nozzle,” Soviet Physics Tech.Physics 13, 1630, (1969).Google Scholar
  4. 4.
    Sutton G. W. “Effect of Turbulent Fluctuations in an Optically Active Fluid Medium,”AIAA, 7, 1737, (1969).Google Scholar
  5. 5.
    Hoffmann A. L., Jones T. G. “Geometrical Methods for Improving the Optical Quality of Gasdynamic Lasers,”AIAA, Paper No. 72-217 (1972).Google Scholar

Copyright information

© Tamburini Editore s.p.a. Milano 1975

Authors and Affiliations

  • Massimo Germano
    • 1
  1. 1.Istituto di Meccanica Applicata alle MacchinePolitecnico di TorinoItaly

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