摘要
制备了系列Er3+/Yb3+共掺碲硼硅酸盐玻璃样品(85-x)TeO2-15B2O3-xSiO2(TBSx=0,5,10,15,20mol%).测试和分析了样品的吸收光谱、荧光光谱、能级寿命、红外透射光谱及差热特性.并通过对Er3+离子4I13/2→4I15/2跃迁发射谱线的高斯拟合,设计了一个简单的四能级结构估算了Er3+离子4I13/2和4I15/2能级在碲硼硅酸盐中的Stark分裂情况.研究表明SiO2的引入能有效地改善玻璃的热稳定性和光谱性能,玻璃析晶温度Tx与玻璃转变温度Tg之差(ΔT=Tx-Tg)可达178℃,说明碲硼硅酸盐是一种适合于光纤拉制的玻璃基质材料.比较了不同基质玻璃中Er3+离子的荧光半高宽和受激发射截面,结果表明TBS玻璃系统具有较好的带宽性能,是一种优良的宽带光纤放大器候选基质材料.
A series of Er^3＋/Yb^3＋ co-doped （85 - x） TeO2-15B2O3-xSiO2 （TBS x = 0,5, 10, 15,20 mol%） glasses have been prepared. The thermal stability, absorption and emission spectra, lifetime of Er^3 ＋ ： 4^ I13/2 level and infrared transmit spectra were measured and discussed. The emission spectra of Er^3＋ ：4^I13/2→4^I15/2 transition was analyzed using a peak-fit routine, and an equivalent four-level system was proposed to estimate the Stark splitting for the 4 ^I15/2 and 4 ^I13/2 levels of Er^3 ＋ ions. It was found that the thermal stability of these glasses was improved by introducing SiO2. The difference between the glass transition temperature （Ts） and the crystallization onset temperature （Tx）, AT = Tx - Ts, have came to 178℃ when SiO2 was 20 tool%, indicating that they were suitable for fiber drawing. The fluorescence full width at half maximum （FWHM） and peak of emission cross-section （ σ^Peake ） of Er^3 ＋ ions in different glass hosts have been compared. The results indicate that these new rIBS glasses are promising host material for broadband amplifiers
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
2007年第3期1758-1764,共7页
Acta Physica Sinica
基金
浙江省自然科学基金(批准号:Y104498)
浙江省科技厅(批准号:2005C31014
2006C21082)
宁波大学校基金(批准号:200586)资助的课题.~~
