Advertisement

Pulse Propagation and Laser Lethargy in the Free-Electron Laser

  • Gerald T. Moore
  • Marlan O. Scully
Part of the Ettore Majorana International Science Series book series (SLAP, volume 49)

Abstract

We discuss coherent pulse propagation in the free-electron laser (FEL). The effect of laser lethargy is seen to play an important role in the pulsed FEL, as it does in conventional swept-gain amplifiers based on an atomic medium. Numerical calculations of FEL pulse propagation are presented giving good agreement with the Stanford experiment.

In this paper we discuss the physics of a pulsed free-electron laser of the Stanford type.1,2 We point out that the physics is similar to that of conventional types of swept-gain lasers. In particular, the phenomenon of laser lethargy, which was first discovered3–5 in calculations involving conventional swept-gain amplifiers, plays a crucial role in FEL pulse propagation.6–9 A major goal of this paper is to describe this role.

We begin by summarizing, without much mathematics, the basic physics of the pulsed FEL, and then compare the pulsed FEL with conventional swept-gain lasers. Next we describe the role of laser lethargy both in the conventional lasers and in the FEL. Finally, we present numerical calculations of pulse propagation in the regime of the Stanford experiment, and show that good agreement with the experimental data is obtained in such matters as the power-tuning curves and the electron energy distribution.

Keywords

Pulse Propagation Optical Pulse Laser Field Electron Pulse Electron Bunch 
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.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    L. R. Elias, W. M. Fairbank, J. M. J. Madey, H. A. Schwettman, and T. I. Smith, Phys. Rev. Lett. 36: 717 (1976).ADSCrossRefGoogle Scholar
  2. 2.
    D. A. G. Deacon, L. R. Elias, J. M. J. Madey, G. J. Rasmian, H. A. Schwettman, and T. I. Smith, Phys. Rev. Lett. 38: 892 (1977).ADSCrossRefGoogle Scholar
  3. 3.
    F. A. Hopf, P. Meystre, M. O. Scully, and John F. Seely, Phys. Rev. Lett. 35: 511 (1975).ADSCrossRefGoogle Scholar
  4. 4.
    F. A. Hopf and P. Meystre, Phys. Rev. 12: 2534 (1975).ADSCrossRefGoogle Scholar
  5. 5.
    F. A. Hopf, P. Meystre, and D. W. McLaughlin, Phys. Rev. 13: 777 (1976).ADSCrossRefGoogle Scholar
  6. 6.
    H. Al-Abawi, F. A. Hopf, G. T. Moore, and M. O. Scully, Opt. Comm. 30: 235 (1979). Early accounts of this work were given at: Tenth International Quantum Electronics Conference, Atlanta (1978); Optical Society of America Meeting, San Francisco (November, 1978); Winter Conference on the Physics of Quantum Electronics, Snowbird, Utah (January, 1979); Stanford FEL Workshop (see ref. 9).ADSCrossRefGoogle Scholar
  7. 7.
    Enrico Fermi School on “Developments in High Power Lasers and Their Applications”, Varenna, Italy, 1978 (proceedings to be published), article by G. T. Moore, M. O. Scully, F, A. Hopf, and P. Meystre.Google Scholar
  8. 8.
    Free-Electron Generators of Coherent Radiation, Proc. Conf. on the Physics of Quantum Electronics, Telluride, Colorado, 1979, eds. S. F. Jacobs, H. S. Pilloff, M. Sargent, M. O. Scully and R. Spitzer, Vol. 7 (Addison-Wesley, 1980), article by F. A. Hopf, T. G. Kuper, G. T. Moore, and M. 0. Scully, p. 31.Google Scholar
  9. 9.
    T. G. Kuper, G. T. Moore, and M. O. Scully, Opt. Comm. 34: 117 (1980); G. T. Moore and M. O. Scully, talk delivered at the Stanford FEL Workshop, Stanford University (March, 1979).ADSCrossRefGoogle Scholar
  10. 10.
    F. A. Hopf, P. Meystre, M. O. Scully, and W. H. Louisell, Opt. Comm. 18: 413 (1976).ADSCrossRefGoogle Scholar
  11. 11.
    F. A. Hopf, P. Meystre, M. O. Scully and W. H. Louisell, Phys. Rev. Lett. 37: 1342 (1976).ADSCrossRefGoogle Scholar
  12. 12.
    H. Al-Abawi, F. A. Hopf, and P. Meystre, Phys. Rev. A16: 666 (1977).ADSGoogle Scholar
  13. 13.
    Novel Sources of Coherent Radiation, Proc. Conf. on the Physics of Quantum Electronics, Telluride, Colorado, 1977, eds. S. F. Jacobs, M. Sargent, and M. 0. Scully, Vol. 5 (Addison-Wesley, 1978), article by F. A. Hopf, P. Meystre, G. T. Moore, and M. O. Scully, p. 41.Google Scholar
  14. 14.
    W. B. Colson, Phys. Lett. A64: 190 (1977); W. H. Louisell, J. Lam, D. A. Copeland, and W. B. Colson, Phys. Rev. A19:288 (1979). See also articles in Ref. 12 by W. B. Colson, p. 157, and N. Kroll, p. 115.ADSGoogle Scholar
  15. 15.
    A. Bambini and A. Renieri, Lett. Nuovo Cimento 31: 339 (1978); A. Bambini and A. Renieri, Opt. Comm. 29:244 (1978); and A. Bambini, A. Renieri, and S. Stenholm, Phys. Rev. A19:2013 (1979).Google Scholar
  16. 16.
    G. T. Moore and M. O. Scully, Phys. Rev. A21: 2000 (1980).MathSciNetADSGoogle Scholar
  17. 17.
    Lectures by J. M. J. Madey in Ref. 7.Google Scholar
  18. 18.
    Lectures by J. M, J. Madey at this school.Google Scholar
  19. 19.
    W. B. Colson and S. K. Ride, Phys. Lett. 76A: 379 (1980); W. B. Colson and S. K. Ride in Ref. 8, p. 377; A. Bambini, R. Bonifacio and S. Stenholm, Opt. Comm. 32:306 (1980); G. Dattoli and A. Renieri, Lett. Nuovo Cimento 24:121 (1979); lectures given at this school by W. B. Colson, J. Ekstein, and A. Renieri.ADSGoogle Scholar
  20. 20.
    R. H. Pantell, G. Soncini, and H. E. Puthoff, IEEE J. Quan. Elect. 4: 905 (1971); V. P. Sukhatme and P. W. Wolff, J. Appl. Phys. 44:233 (1973).ADSCrossRefGoogle Scholar
  21. 21.
    R. Bonifacio, P. Meystre, G. T. Moore, and M. O. Scully, Phys. Rev. A21, 2009 (1980).MathSciNetADSGoogle Scholar

Copyright information

© Plenum Press, New York 1983

Authors and Affiliations

  • Gerald T. Moore
    • 1
    • 2
  • Marlan O. Scully
    • 1
    • 2
  1. 1.Institute for Modern Optics, Department of Physics and AstronomyUniversity of New MexicoAlbuquerqueUSA
  2. 2.Projektgruppe für LaserforschungMax-Planck-Gesellschaft zur Förderung der Wissenschaften E.V.Garching/MunichWest Germany

Personalised recommendations