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New Type of Electron Emission from a Gold Surface Induced by a Strong 4 NS CO2 Laser Pulse

  • Gy. Frakas
  • S. L. Chin
  • P. Galarneau
  • F. Yergeau
Conference paper

Abstract

In recent years, there is a renewed effort in understanding the physical processes of the interaction of strong short laser pulses with metal surfaces. These processes are very interesting from both academic (fundamental questions of intense field QED) and practical (material microprocessing) points of view. Many review papers have been published on both of these subjects [l, 2]. It is already knowm both theoretically and experimentally that with laser pulses of short wavelengths (e.g. ruby and Nd-glass lasers), multiphoton interaction governs the photo-electron emission process [11. If a long wavelength laser pulse is used, (such as a CO2 laser, λ = 10.6 μ), theory [3, 4] predicted some quite new phenomena, (e.g. optical tunnelling). Therefore, using an intense CO2 laser pulse, strong deviation from the multiphoton process is expected similar to the case of ionization of an atom which will be presented also in this conference by us.

References

  1. [1]
    See for example, Gy. Farkas, in Multiphoton Processes John Wiley and Sons, New York, 1978 in Lasers spectroscopie Springer-Verlag, Wien, New York 1978, and I.S. Anisimov, B.A. Bendersky, Gy. Farkas, Soviet Physics Uspekhi, 20 467 (1978).Google Scholar
  2. N. Bloembergen, Rev. Modern Phys., 54, 685 (1982). J.F. Ready, Industrial Application of Lasers Academic Press 1978.Google Scholar
  3. [3]
    L.V. Keldysh, Sov. Phys. JETP, 20, 1307 (1965).Google Scholar
  4. [4]
    F.V. Bunkin, M.V. Fedorov, Soviet Phys. JETP, 22, 844 (1966).ADSGoogle Scholar
  5. [5]
    Jui-teng Lin, Thomas F. George, J. Appl. Phys., 54, 382 (1983).CrossRefGoogle Scholar
  6. [6]
    I.S. Amisinov, N.A. Inogamov, Yu. V. Petrov, Phys. Lett., 55A 449 (1976).Google Scholar
  7. [7]
    R. Yen, J. Liu and N. Bloembergen, Opt. Commun., 35, 277 (1980).ADSCrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media New York 1984

Authors and Affiliations

  • Gy. Frakas
    • 1
    • 2
  • S. L. Chin
    • 1
  • P. Galarneau
    • 1
  • F. Yergeau
    • 1
  1. 1.Laboratoire de Recherches en Optique et Laser (LROL) Département de PhysiqueUniversité LavalCanada
  2. 2.Research Institute of PhysicsHungarian Academy of SciencesBudapestHungary

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