Spectroscopy of high-energy states of lanthanide ions
Abstract
We discuss recent progress and future prospects for the analysis of the 4fN-15d excited states of lanthanide ions in host materials. Ab-initio calculations for Ce3+ in LiYF4 are used to estimate crystal-field and spin-orbit parameters for the 4f1 and 5d1 configurations. We discuss the possibility of using excited-state absorption to probe the electronic and geometric structure of the 4fN-15d excited states in more detail and we illustrate these ideas with calculations for Yb2+ ions in SrCl2.
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