Predicting and optimizing the physical and spectroscopic properties of phosphate laser glasses using a phase diagram approach

Despite the significant technological applications of laser glasses, the quantitative prediction and optimization of their properties, particularly the spectroscopic properties, remain challenging. Here we address this problem by regarding the nearest-neighboring congruently melting compounds as the "component and structural motifs" based on the phase diagram approach. The composition-structure-property (CSP) relationships of Nd3+-doped ternary phosphate glasses are investigated. Spectroscopic properties are quantitatively predicted with an error of less than 10% compared to the experimental results. In particular, the fluorescence lifetime (tau(m)) can be accurately calculated using the phase diagram approach, which is difficult to be predicted previously. Furthermore, the CSP databases with over 1000 compositions are established for the optimization of commercial laser glasses. This study enriches the CSP database of traditional laser glass and provides guiding significance for future research.