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Investigations on the excited states of Eu2+ in CaF2-and SrF2-crystals by two-photon absorption spectroscopy

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Zeitschrift für Physik B Condensed Matter

Abstract

The two-photon-excitation spectra of Eu2+:CaF2 and Eu2+:SrF2 have been studied at 4.2 K in the region between 24,100cm−1 and 28,100cm−1. Besides a broad two-photon absorption region two groups of sharp lines at 27,600cm−1 and 28,000cm−1 in Eu2+:CaF2 (27,670cm−1 and 28,080cm−1 in Eu2+:SrF2) are identified with the transitions 4f 7:8 S 7/2→4f 7:6 P 7/2,6 P 5/2. It is shown that the 4f-states of Eu2+ in this host lattice differ significantly in their physical properties from the same states of the isoelectronic Gd3+. For these transitions, however, the calculated two-photon absorption rates are in good agreement with the experiments.

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  1. U. Fritzler

    Present address: Siemens AG, Erlangen, FRG

Authors and Affiliations

  1. Institut für Festkörperphysik, Abteilung Technische Physik, Technische Hochschule Darmstadt, Hochschulstraße 2, D-6100, Darmstadt, Federal Republic of Germany

    U. Fritzler

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  1. U. Fritzler
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A project of the Sonderforschungsbereich 65 “Festkörperspektroskopie”, Darmstadt-Frankfurt, supported by the Deutsche Forschungsgemeinschaft

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Fritzler, U. Investigations on the excited states of Eu2+ in CaF2-and SrF2-crystals by two-photon absorption spectroscopy. Z Physik B 27, 289–296 (1977). https://doi.org/10.1007/BF01320518

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  • DOI: https://doi.org/10.1007/BF01320518

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