Crystal-field analysis for RE3+ ions in laser materials: III. Energy levels for Nd3+ and Er3+ ions in LaAlO3, YAlO3, and LaGaO3 single crystals - Combined approach to low symmetry crystal field parameters

► CF analysis of energy levels for Nd3+ and Er3+ ions in ABO3 crystals is presented. ► Combined ADS/SPM strategy is employed. ► Its usefulness for successful analysis of low-symmetry systems is proved. ► Structural relationships between different ion-host systems are emphasized.