Transition intensities of trivalent lanthanide ions in solids: Extending the Judd-Ofelt theory

Gohar Hovhannesyan , Vincent Boudon , Maxence Lepers (1)

1 ICB - Laboratoire Interdisciplinaire Carnot de Bourgogne

We present a modified version of the Judd-Ofelt theory, which describes the intensities of f-f transitions for trivalent lanthanide ions (Ln3+) in solids. In our model, the properties of the dopant are calculated with well-established atomic-structure techniques, while the influence of the crystal-field potential is described by three adjustable parameters. By applying our model to europium (Eu3+), well-known to challenge the standard Judd-Ofelt theory, we are able to give a physical insight into all the transitions within the ground electronic configuration, and also to reproduce quantitatively experimental absorption oscillator strengths. Our model opens the possibility to interpret polarized-light transitions between individual levels of the ion-crystal system.

Domaines: Physique Atomique [physics.atom-ph]; Chimie-Physique [physics.chem-ph]; Physique Quantique [quant-ph]

Gohar Hovhannesyan, Vincent Boudon, Maxence Lepers. Transition intensities of trivalent lanthanide ions in solids: Extending the Judd-Ofelt theory. Journal of Luminescence, 2021, pp.118456. ⟨10.1016/j.jlumin.2021.118456⟩. ⟨hal-03364107⟩