Volume 49 (2006)

JUDD-OFELT ANALYSIS OF THE Er³⁺ IONS IN CaF₂ CRYSTALS
Pages 123-128
A. Lucaci, M. Stef, E. Preda, I. Nicoara

Abstract
Calcium fluoride is a well-known crystal that can be grown easily by Bridgman or Czochralski techniques; CaF₂crystals has been used for long time in many optical components due to its exceptional transparency in the UV as well as in the IR. In this work a Judd-Ofelt investigation on the Er³⁺ ions in CaF₂:ErF₃ single crystals with various ErF₃ concentrations have been performed. The intensity parameters are used to determine the emission probabilities of transitions and the branching ratios of the Er³⁺ transitions. The radiative life times of the excited states are also determined.