摘要
在掺Er3+的70TeO2–20ZnO–5La2O3–5Nb2O5(各组成以摩尔比计)玻璃中引入Yb3+和Ce3+,分析比较了975nm泵浦下Yb3+和Ce3+对于Er3+的1.5μm波段红外荧光和可见上转换发光特性的影响。结果表明:在掺Er3+的碲酸盐玻璃中引入Yb3+,有效地提高了Er3+的1.5μm波段红外荧光强度、展宽了其荧光谱,也显著增强了可见上转换发光强度。随着玻璃中Ce3+的引入,进一步提高了Er3+的4I11/2→4I13/2能级间无辐射弛豫速率,1.5μm波段红外荧光也得到进一步增强,但可见上转换发光大幅减弱。与Er3+/Yb3+共掺相比,Er3+/Yb3+/Ce3+共掺碲酸盐玻璃是一种更为理想的应用于1.5μm波段宽带放大器的增益介质。
Yb3+ and Ce3+ ions were introduced into Er3+-doped 70TeO2–20ZnO–5La2O3–5Nb2O5 (the composition is in mole ratio) glasses, and the effects of Yb3+ and Ce3+ on the infrared fluorescence properties at the 1.5 μm band and the visible upconversion lu- minescence of Er3+ under the excitation at 975 nm were investigated. The results show that with the introduction of Yb3+ ions, not only does the 1.5 μm band infrared fluorescence enhance and broaden, but also the visible upconversion luminescence increases more eff...
出处
《硅酸盐学报》
EI
CAS
CSCD
北大核心
2008年第4期520-525,共6页
Journal of The Chinese Ceramic Society
基金
浙江省自然科学基金(Y107070)
宁波市自然科学基金(2006A610026)资助项目
关键词
光谱性质
碲酸盐玻璃
能量传递
镱
铈
铒
spectroscopic properties
tellurite-based glass
energy transfer
ytterbium
cerium
erbium
