New Optical Materials based on Rare Earth Doped Oxyfluoride Glasses and Ceramics: Structural Studies by Magnetic Resonance Methods

基于稀土掺杂氟氧化物玻璃和陶瓷的新型光学材料：磁共振方法的结构研究

• 批准号: 413550885
• 负责人: Professor Dr. Hellmut Eckert
• 金额: --
• 依托单位: Institut für Physik
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2018
• 资助国家: 德国
• 起止时间: 2017-12-31 至 2022-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/413550885?language=en
• 关键词: New; Optical; Materials; based; Rare

The development of novel high optical quality rare earth ion doped crystals, glasses and ceramics as solid state laser materials presents an active area of current materials research. To facilitate the design of materials with optimized emission properties, detailed structural information at the atomic level is essential, regarding the local bonding environment (siting) of the rare earth ions, their second-nearest coordination sphere, and their extent of local clustering, as well as the distribution over separate micro- or nanophases in composite materials. In this project, we seek a fundamental understanding of the spectroscopic and photophysical properties of such material systems on a structural basis, combining NMR and EPR as structural tools. The systems studied are glasses based on fluoroaluminate, fluoride phosphate and fluoride tellurite compositions. To this end a comprehensive solid state NMR and EPR strategy will be developed and applied for characterizing the local environment of the emitter ions. The structural information obtained by these approaches and its correlation with the optical materials properties will be important for developing new design strategies for high power laser materials.

作为固态激光材料的新型高光学质量稀土离子掺杂晶体、玻璃和陶瓷的开发代表了当前材料研究的活跃领域。为了便于设计具有优化发射特性的材料，原子水平上的详细结构信息至关重要，包括稀土离子的局部键合环境（位置）、它们的第二最近的配位球以及它们的局部聚集程度，例如以及复合材料中单独微米相或纳米相的分布。在这个项目中，我们结合 NMR 和 EPR 作为结构工具，寻求在结构基础上对此类材料系统的光谱和光物理性质有基本的了解。研究的系统是基于氟铝酸盐、氟化磷酸盐和氟化亚碲酸盐组合物的玻璃。为此，将开发并应用全面的固态 NMR 和 EPR 策略来表征发射离子的局部环境。通过这些方法获得的结构信息及其与光学材料特性的相关性对于开发高功率激光材料的新设计策略非常重要。