This article is cited in 1 paper

The 18th International Theophilus Symposium (IFAC-2022) on Spectroscopy of Crystals Activated by Ions of Rare Earths and Transition Metals (August 22-26, 2022, Moscow)
Spectroscopy of condensed state

Spectroscopy of $f^{13}$-lanthanides in fluoride crystals

E. Radzhabov^a, R. Shendrik^a, V. Pankratov<sup>b

a</sup> Vinogradov Institute of Geochemistry, Siberian Branch, Russian Academy of SciencesIrkutsk, 664033 Irkutsk, Russia
^b The Institute of Solid State Physics, University of Latvia, LV1063 Riga, Latvia

Abstract: The absorption and luminescence spectra of $4f$–$4f$-transitions of Yb$^{3+}$ ions in crystals of CaF$_2$, SrF$_2$ and BaF$_2$ fluorides have been studied. The crystal splitting of the $^2F_{7/2}$, $^2F_{5/2}$ levels in Tm$^{2+}$, Yb$^{3+}$ by the cubic field decreases linearly with increasing lattice constant. Both lines intersect at the energy of $^2F_{7/2}$ – $^2F_{5/2}$ transitions in unperturbed Tm$^{2+}$, Yb$^{3+}$ ions. The positions of the $f^{13}$-levels of Tm$^{2+}$ or Yb$^{3+}$ in fluoride crystals are well described by ab-initio relativistic calculations.

Keywords: absorption spectra, emission spectra, $f^{13}$-levels, alkaline-earth fluorides.

Received: 17.10.2022
Revised: 15.02.2023
Accepted: 19.02.2023

DOI: 10.21883/OS.2023.04.55549.54-22

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