High Resolution Two-Photon Spectroscopy of Rydberg States of Alkaline-Earth Atoms

  • R. Beigand
  • A. Timmermann
Conference paper


The investigation of high Rydberg states by means of Doppler-free two-photon spectroscopy using cw dye lasers has opened a new dimension of accuracy[1]. Precise values of ionization limits and quantum defects can be obtained, and the technique is capable of resolving hyperfine structures and isotope shifts[2,3]. In two-electron systems the latter two quantities are sensitive probes of singlet-triplet mixing and perturbations of Rydberg states by other configurations. In this contribution we report on a systematic study of hyperfine structures and isotope shifts of Rydberg states in alkaline-earth elements to elucidate the influence of singlet-triplet mixing and perturbations induced by the hyperfine interaction.


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Copyright information

© Springer Science+Business Media New York 1984

Authors and Affiliations

  • R. Beigand
    • 1
  • A. Timmermann
    • 1
  1. 1.Freie Universität BerlinBerlinGermany

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