Abstract
Stimulated non-degenerate two-photon emission from a pencil of lithium vapour is demonstrated on three decay cascades of the Li atom, namely accompanied with transitions from the 3s, 3d and 4s levels to the 2s level, upon pulsed two-photon excitation of the Li 4f and 4d levels. It competes with superfluorescence and parametric emission which show up at slightly shifted wavelengths. In the cascade via the 3d level, which is strongest under the experimental conditions, also two-photon Stokes scattering of the excitation light is identified.
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References
B. Nikolaus, D.Z. Zhang, P.E. Toschek: Phys. Rev. Lett.47, 171 (1981)
F. Dorsch, S. Geltman, P.E. Toschek: Phys. Rev. A37, 2441 (1988)
A. Gallagher, T. Holstein: Phys. Rev. A16, 2413 (1977)
R.W. Terhune, P.D. Maker, C.M. Savage: Phys. Lett.14, 681 (1965)
J. Heinrich, K. Hollenberg, W. Behmenburg: Appl. Phys. B23, 225 (1984)
J.C. White, D. Henderson: Opt. Lett.7, 204 (1982)
Ph. Cahuzac, H. Sontag, P.E. Toschek: Opt. Commun.31, 37 (1979)
J.C. MacGillivray, M.S. Feld: Phys. Rev. A23, 1334 (1981)
H.J. Lau: Impulsfluktuationen laserangeregter Lichtemission-sprozesse avs Lithium-Dampf: Dissertation, Universität Hamburg (1986)
Th. Hänsch, P.E. Toschek: Z. Phys.236, 213 (1970)
D.S. Bethune: Phys. Rev. A23, 3139 (1981); Opt. Lett.6, 287 (1981)
S. Dinev, A. Guzman de Garcia, P. Meystre, R. Salomaa, H. Walter: InLaser Spectroscopy VI, ed. by H.P. Weber, W. Lüthy, Springer Ser. Opt. Sci., Vol. 40 (Springer, Berlin, Heidelberg 1983) p. 183