Collisional Processes Between Laser-Excited Potassium Atoms

  • M. Allegrini-Arimondo
  • P. Bicchi
  • S. Gozzini
  • P. Savino
Conference paper
Part of the Springer Series in Optical Sciences book series (SSOS, volume 30)


The formation of both positive ions and highly excited atoms upon resonant laser excitation of alkali vapors has been observed even at laser power densities considerably lower than is required for multiphoton processes to occur [1]. Understanding the formation of these ions and excited atoms is complicated because several competitive mechanisms may occur. The relative contributions of each mechanism depend strongly on both the atomic density and the laser power density. Experiments have been carried out at very different values of these two parameters, namely atomic density in the range 1012÷1017 cm−3 and laser power density in the range 0.5÷108W/cm2. The collisional mechanisms may be followed on separated time scales [21 in experiments with pulsed lasers, however it is more difficult to separate the effects of different processes in cw experiments, where only the steady-state regime can be studied.


Atomic Density Excited Atom Associative Ionization Laser Power Density Atomic Potassium 
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  1. 1.
    T.B. Lucatorto and T.J. Mcllrath: Appl. Opt. 19,3943 (1980) and references quoted thereinGoogle Scholar
  2. 2.
    A.R. Measures and P.G. Cardinal: Phys. Rev. A23, 304 (1981)Google Scholar
  3. 3.
    M. Allegrini, G. Aizetta, A. Kopystynska, L. Moi and G. Orriols: Opt. Commun. 19,96 (1976); 22, 329 (1977)CrossRefADSGoogle Scholar
  4. M.’ Allegrini, P. Bicchi, S. Gozzini and P. Savino: Opt. Commun. 36, 449 (1981)CrossRefADSGoogle Scholar
  5. 4.
    G.H. Bearman and J.J. Leventhal: Phys. Rev. Lett. 41, 1227 (1978)CrossRefADSGoogle Scholar
  6. V.S. Kushawaha and J.J. Leventhal: Phys. Rev. A22, 2468 (1980)CrossRefADSGoogle Scholar
  7. 5.
    S. Geltman: J. Phys. B: Atom. Molec. Phys. 10, 3057 (1977)CrossRefADSGoogle Scholar
  8. 6.
    S. Gozzini: Thesis University of Pisa April 1981Google Scholar
  9. 7.
    J.E. Lawler: Phys. Rev. A22, 1025 (1980)CrossRefADSGoogle Scholar
  10. 8.
    M. Allegrini, P. Bicchi, S. Gozzini, I. Longo and P. Savino: to be publishedGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 1981

Authors and Affiliations

  • M. Allegrini-Arimondo
    • 1
  • P. Bicchi
    • 1
    • 2
  • S. Gozzini
    • 1
    • 3
  • P. Savino
    • 1
  1. 1.Istituto di Fisica Atomica e Moleocolare del C.N.R.PisaItaly
  2. 2.Istituto di Fisica dell’UniversitàSienaItaly
  3. 3.Istituto di Fisica dell’UniversitàPisaItaly

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