Evaluation of Ce3+: LiCaAlF6 single crystal by Multi-Photon Luminescence Measurement

In this paper, we evaluated the doping density and spatial distribution of Ce3+ ions in a LiCaAlF6 single crystal. We observed the heterogeneity of Ce3+-doped LiCaAlF6 using Multi-Photon Luminescence Measurement. Further, we employed laser ablation inductively coupled plasma mass spectrometry to perform elementary analysis. We measured the concentration and distribution of Ce, Li, Ca, and Al. The luminescence intensity increased in proportion to the Ce concentration. Therefore, our evaluation method, which measures the multi-photon luminescence intensity, can possibly be employed to analyze the concentration and distribution of a low amount of elements due to luminescence. Additionally, we can evaluate the luminescence materials nondestructively and three-dimensionally by this measurement. This method could be a dominant tool for evaluation of luminescent materials compared with the conventional methods.