Insight into the role of Er3+ local structure in thermal stability enhancement and concentration quenching suppression for germanate glasses

Key Points

• Enhanced thermal stability is achieved through a specific local structure of Er3+ ions in germanate glasses.
• Concentration quenching suppression occurs at higher Er3+ ion concentrations, indicating effective energy transfer mechanisms.
• Analysis of glass compositions shows that the local environment of Er3+ ions significantly impacts thermal properties.
• This finding highlights the potential for optimizing glass materials in various applications, including lasers and optical devices.