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VUV-luminescence and excitation spectra of the heavy trivalent rare earth ions in fluoride matrices
Kirm M.1,2, Makhov V.N.3, True M.1, Vielhauer S.1, Zimmerer G.1
1Institut fur Experimentalphysik der Universitat Hamburg, Hamburg, Germany
2Institute of Physics, University of Tartu, Tartu, Estonia
3P.N. Lebedev Physical Institute, Russian Academy of Sciences, Moscow, Russia
Email: georg.zimmerer@desy.de
Выставление онлайн: 20 июля 2005 г.

VUV 4fn->4fn-15d transitions of Gd3+, Er3+, Tm3+, and Lu3+ in fluoride matrices have been analysed with high-resolution luminescence and excitation spectroscopy. In trifluorides, strong electron-phonon coupling has been found. In the other matrices, the luminescence spectra clearly yield zero-phonon lines and phonon replica, indicating intermediate coupling. The energies of the zero-phonon lines observed are compared with theoretical predictions. Near the threshold of f-> d excitations, some of the excitation spectra yield sharp structures which cannot be explained with phonon replica but will be discussed in terms of the energy levels of the 4fn-15d configuration. The work was supported by the Minister of Science and Technology of Germany under contracts 05 KS1GUD/1 and 03N8019D. Support by the Graduiertenkolleg Felder und lokalisierte Atome--Atome und lokalisierte Felder of the Deutsche Forschungsgemeinschaft (GRK 403) is gratefully acknowledged.
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