Zeeman spectroscopy and crystal-field analysis of low symmetry centres in Nddoped YSiO.

We report on infrared to visible Zeeman absorption spectroscopy and parameterised crystal-field modelling of Ndcentres in YSiOthrough the use of experimentally inferred crystal-field energy levels and Zeeman directional electronicvalues. We demonstrate that good agreement between the calculated and experimental crystal-field energy levels as well as directional Zeemanvalues along all three crystallographic axes can be obtained. Further, we demonstrate that the addition of correlation crystal field effects successfully account for discrepancies that arise between the calculated and experimental values relevant to theH11/2(2) multiplet in a one-electron crystal field model.