Effect of Yb³⁺ Content on Spectral Properties of Er³⁺ Doped Aluminate Glasses

Yb 3+ 含量对掺Er 3+ 铝酸盐玻璃光谱性质的影响 Effect of Yb 3+ Content on Spectral Properties of Er 3+ Doped Aluminate Glasses 焦艳 JIAO Yan 2 1 first-author 李溦长 LI Wei-chang 2 1 康帅 KANG Shuai 2 薛天锋 XUE Tian-feng 2 孙时宇 SUN Shi-yu 2 何冬兵 HE Dong-bing 2 胡丽丽 HU Li-li 2 中国科学院大学 北京,100049 中国科学院大学 北京,100049 中国科学院上海光学精密机械研究所 高功率激光单元技术实验室, 上海 201800 中国科学院上海光学精密机械研究所 高功率激光单元技术实验室, 上海 201800 采用高温熔融法制备百分比为（100- x ）（23.6Al 2 O 3 -53CaO-7.7BaO-2.1Na 2 O-10.3Ga 2 O 3 -3.1B 2 O-0.2Er 2 O 3 ）- x Yb 2 O 3 （ x =0，0.9，1.9，2.8，3.6，4.5）的铝酸盐玻璃。应用差示扫描量热法、吸收光谱、荧光光谱、红外光谱以及拉曼光谱等检测手段，系统研究了不同Yb 3+ 离子引入量对玻璃的物性、热稳定性、Er 3+ 离子光谱性质和结构的影响。结果表明，Yb 2 O 3 含量越高，玻璃的密度和折射率越大，抗析晶能力有所增强。随着Yb 2 O 3 的增加，玻璃在976 nm吸收系数增大，对应于Er 3+ 离子的 2 H 11/2 4 I 15/2 、 4 S 3/2 4 I 15/2 以及 4 F 9/2 4 I 15/2 跃迁的527，549，666 nm的上转换发光、红光与绿光发光强度比以及对应于 4 I 13/2 4 I 15/2 的1.53 m近红外荧光强度明显增加。当Yb 2 O 3 浓度为3.6%时，铝酸盐玻璃样品在近红外1.53 m荧光最强，此时Yb 3+ Er 3+ 正向能量传递效率 1 最大，约为82.9%。该系列铝酸盐玻璃中Er 3+ 离子1.53 m最大发射截面为0.7710 -20 cm 2 ，荧光半高宽最大值为39.4 nm，荧光寿命最大值为4.46 ms。 Aluminate glass composition is (100- x )(23.6Al 2 O 3 -53CaO-7.7BaO-2.1Na 2 O-10.3Ga 2 O 3 -3.1B 2 O-0.02Er 2 O 3 )- x Yb 2 O 3 ( x =0, 0.9, 1.9, 2.8, 3.6, 4.5), and it was prepared by conventional melting and quenching method. The effects of Yb 2 O 3 content on the physical properties, thermal stability, spectral properties and structure of Yb 3+ /Er 3+ co-doped aluminate glasses were systematically investigated by using differential scanning calorimetry (DSC), absorption spectrum, fluorescence spectrum, infrared spectrum and Raman spectra. The results show that the density and refractive index increased with the increasing content of Yb 2 O 3 . Increasing Yb 2 O 3 content is beneficial to increase the absorption intensity of the Yb 3+ /Er 3+ doped aluminate glass at 976 nm. DSC test indicates that resistance to crystallization of Yb 3+ /Er 3+ co-doped aluminate glasses increases with the addition of Yb 3+ ion content. The up-conversion emission at 527, 549, 666 nm corresponding to the 2 H 11/2 4 I 15/2 , 4 S 3/2 4 I 15/2 and 4 F 9/2 4 I 15/2 transitions of Er 3+ ions, the red to green luminescence intensity ratio and near-infrared fluorescence intensity at 1.53 m corresponding to 4 I 13/2 4 I 15/2 are significantly enhanced as Yb 2 O 3 content increasing. When Yb 2 O 3 content reached 3.6%, the glass has the strongest near-infrared fluorescence intensity at 1.53 m. Meanwhile, the forward energy transfer efficiency 1 of Yb 3+ Er 3+ is the maximum, about 82.9%. In this Yb/Er co-doped aluminum glass, the maximum emission cross section, the full width at half maximum (FWHM) of the fluorescence of 1.53 m and maximum fluorescence lifetime of Er 3+ are 0.7710 -20 cm 2 , 39.4 nm and 4.46 ms, respectively. 铝酸盐玻璃 Yb 3+ /Er 3+ 共掺杂 上转换发光 1.53 &mu m发光 aluminate glass Yb 3+ /Er 3+ co-doping up-conversion emission 1.53 &mu m emission 徐军. 激光材料科学与技术前沿[M]. 上海:上海交通大学出版社, 2007. XU J. 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