Ni^(2+)掺杂透明微晶玻璃超宽带光谱特性研究  

Super-Wide Emission from Transparent Ni^(2+)-Doped Transparent Glass Ceramics

作　　者：鲍仁强[1] 徐时清[1,2] 王玮[1] 章珏[1] 

机构地区：[1]中国计量学院材料科学与工程学院,浙江杭州310018 [2]浙江大学材料与化学工程学院,浙江杭州310027

出　　处：《稀有金属材料与工程》2008年第A02期509-512,共4页Rare Metal Materials and Engineering

基　　金：国家自然科学基金(60508014和50502030);浙江省自然科学基金青年人才培养项目(R406007);中国博士后科学基金(2005038020);浙江省博博士后择优资助项目(2006-bsh-02)资助

摘　　要：制备了一种新的Ni2+掺杂La2O3-Ga2O3-Al2O3-SiO2(LGAS)透明微晶玻璃。研究了Ni2+掺杂微晶玻璃的光谱特性,发现Ni2+掺杂LGAS掺杂微晶玻璃具有较长的荧光寿命和较宽的荧光光谱,荧光中心位于1260 nm,荧光半高宽为320 nm,荧光寿命和受激发射截面的乘积为6.87×10-24cm2·s。分析认为,Ni2+掺杂LGAS微晶玻璃的超宽带荧光来源于高场态纳米晶中Ni2+的3T2(3F)→3A2(3F)。研究认为,Ni2+掺杂LGAS微晶玻璃可用作超宽带光纤放大器潜在的增益介质材料。A new Ni2＋-doped La2O3-Ga2O3-Al2O3-SiO2 （LGAS） transparent glass ceramics was prepared. The spectroscopic property of Ni2＋-doped glass ceramics has been researched. It is showed that the Ni2＋-doped LGAS glass ceramics has a long lifetime and a wide spectrum of emission centered at 1260 nm with full width at half maximum of about 320 nm. The product of the lifetime and the stimulated emission cross section is 6.87×10^-24cm2·s. It is analysed that the observed super-wide emission of the Ni2＋-doped LGAS glass ceramics could be attributed to the 3T2（3F）→ 3A2 （3F） transition of Ni2＋ that occupy high-field sites in nano-crystallines. It is suggested that the transparent Ni2＋-doped LGAS glass ceramics have been potential plus medium of super-wide amplifiers.

关 键 词：Ni2+掺杂 透明微晶玻璃 超宽带光纤放大器 

分 类 号：TQ171.1[化学工程—玻璃工业]