P. S. Miedema, R. Mitzner, S. Ganschow, A. Föhlisch and M. Beye
Phys. Chem. Chem. Phys., 2017,19, 21800-21806
DOI:
10.1039/C7CP03026F,
Paper
The active ions in typical laser crystals were studied with Resonant Inelastic X-ray Scattering (RIXS) and Partial Fluorescence Yield X-ray Absorption (PFY-XAS) spectroscopies as solid state model systems for dilute active centers. We analyzed Ti3+ and Cr3+ in α-Al2O3:Ti3+ and LiCaAlF6:Cr3+, respectively. The comparison of experimental data with semi-empirical multiplet calculations provides insights into the electronic structure and shows how measured crystal field energies are related across different spectroscopies.