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Growth and spectroscopic characterization of Pb2+:CaF2 crystals

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Abstract

CaF2 crystals doped with various concentrations of PbF2 (0.4, 0.5, 1 and 2 mol%) were grown in vacuum, in a shaped graphite furnace using the vertical Bridgman method. The optical absorption spectra reveal the four characteristic UV absorption bands (labeled A, B, C and D) of the Pb2+ ions. As the PbF2 concentration increases, the structure of the bands become clearly visible, that is characteristic for the ns 2 ions in various hosts. High intensity emission bands in the near UV spectral region have been observed. The dependence on the Pb2+ concentration of the optical absorption and emission of the Pb2+:CaF2 crystals were not reported before.

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Authors and Affiliations

  1. Faculty of Physics, West University of Timisoara, 300223, Timisoara, Romania

    I. Nicoara, M. Paraschiva, M. Stef & F. Stef

  2. Alexandru Ioan Cuza University of Iasi, 700506, Iasi, Romania

    M. Stef

Authors
  1. I. Nicoara
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  2. M. Paraschiva
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  3. M. Stef
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  4. F. Stef
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Correspondence to M. Stef.

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Nicoara, I., Paraschiva, M., Stef, M. et al. Growth and spectroscopic characterization of Pb2+:CaF2 crystals. Eur. Phys. J. B 85, 292 (2012). https://doi.org/10.1140/epjb/e2012-30433-3

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  • DOI: https://doi.org/10.1140/epjb/e2012-30433-3

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