Fabrication, microstructure and optical properties of Er3+:YAG glass–ceramics
Fabrication, microstructure and optical properties of Er3+:YAG glass–ceramics
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DOI：
10.1016/j.optmat.2010.01.014
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发表时间：
2010-07
影响因子：
3.9
通讯作者：
Fujita Shunsuke;S. Tanabe
中科院分区：
文献类型：
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作者：
Fujita Shunsuke;S. Tanabe
我们通过简单的 Y2O3-Al2O3-SiO2 体系中的玻璃结晶过程，开发了一种以 Er3+:YAG 微晶作为唯一晶相的新型微晶玻璃材料。虽然在较低的结晶温度下在玻璃陶瓷中观察到Y2Si2O7、Y4.67(SiO4)3O、LiAlSiO4和LiAlSi2O6晶相，但在1350℃以上结晶玻璃时会析出单相YAG微晶。 YAG 颗粒尺寸平均约为 5μm，均匀分散在玻璃基体中。通过能量色散X射线分析，发现Er离子被选择性地引入YAG微晶中。与传统的石英玻璃相比，在970 nm激发下，玻璃陶瓷在1450-1670 nm范围内表现出宽带光致发光，这是Er:YAG晶体中4I13/2→4I15/2跃迁的特征，并且每个发射线宽比Er:YAG多晶更宽。
We have developed a novel glass–ceramic material containing Er3+:YAG micro-crystals as the only crystalline phase by simple crystallization process of a glass in an Y2O3–Al2O3–SiO2-based system. While Y2Si2O7, Y4.67(SiO4)3O, LiAlSiO4and LiAlSi2O6crystal phases were observed in glass–ceramics by lower crystallizing temperatures, single-phase YAG micro-crystals were precipitated by crystallizing the glass above 1350°C. The YAG particle sizes were around 5μm in average and dispersed homogeneously in the glass-matrix. From the energy dispersive X-ray analysis, the Er ions were found to be introduced selectively in the YAG micro-crystals. By 970nm excitation, the glass ceramic showed a broad-band photoluminescence in the 1450–1670nm range, which is characteristic to the4I13/2→4I15/2transition in the Er:YAG crystal, compared with the conventional silica-based glasses, and each emission line-width was broader than that of Er:YAG polycrystal.