溶胶凝胶法制备Yb^(3+)/Er^(3+)共掺氧化铝材料的光谱性质

The spectroscopic property of erbium ytterbium co-doped alumina material prepared by sol-gel process

为了得到更加有效的掺饵光波导放大器材料,采用改进了激活剂掺入途径的溶胶凝胶方法,制作了不同比例Yb3+/Er3+共掺杂的γ相氧化铝粉体材料方法,测量了样品的吸收和光致发射光谱并进行了分析。结果表明,Yb3+离子的掺入能很大地提高样品对980nm左右激发光的吸收效率,Er3+离子1534nm主发射峰的发射强度最大增加了约6.3倍;体系中Yb3+∶Er3+的掺杂存在最佳比例,最佳掺杂比例约为6∶1;同时X射线衍射法测试表明,最佳的热处理温度为900℃,相同的热处理温度下,Yb3+的掺入能延缓Al2O3由无定形相向γ相转变的过程,这一结果对进一步改善掺饵光波导放大器的特性是有帮助的。

The alumina powder co-doped with different ratio of Yb^3＋/Er^3＋ was prepared with an advanced sol-gel method as batter material used for Er^3＋ doped waveguide amplifier. The absorption and emission spectra ware measured and analysed. The result indicated that the incorporation of Yb^3＋ could enhance the absorption of 980nm exciting light, for the Er^3＋ and Yb^3＋ codoped alumina power, the photoluminescence peak intensity at 1533nm was increased by a factor of about 6.3 compared with that of the Er^3＋ doped alumina powders. And optimum ratio of the Yb^3＋ ： Er^3＋ was 6：1 for this method. The X-ray diffraction spectra show that the best thermal treatment temperature was 900℃ , and the incorporation of Yb^3＋ could postponed the forming of Yb^3＋ phase at 900℃ thermal treatment condition. The result is helpful for making more effective Er^3＋ doped waveguide amplifier.