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掺铒碲酸盐玻璃光谱特性研究 被引量：1

Spectroscopic Properties of Er^(3+) Doped Tellurite Glasses
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摘要 测试了样品(75-x)TeO2-xWO3-15ZnO-5La2O3-5Nb2O5(摩尔分数)-1%(质量分数)Er2O3(TWZ,x=0,4,8,12,15)和(75-y)TeO2-yB2O3-15ZnO-5La2O3-5Nb2O5(摩尔分数)-1%(质量分数)Er2O3(TBZ,y=0,4,8,12,15)玻璃的吸收光谱、荧光光谱、上转换光谱、能级寿命和热稳定性。应用J-O理论和McCumber理论分别计算了玻璃中Er3+离子光学跃迁强度参数Ωt(t=2,4,6)和受激发射截面。在975 nm激励下,该玻璃同时观察到了绿光(528和544 nm)和红光(660 nm)的上转换发光现象,分别对应于Er3+的2H11/2→4I15/2,4S3/2→4I15/2,和4F9/2→4I15/2跃迁。分析比较了玻璃中WO3和B2O3含量变化对光谱参数的影响。结果表明:随着WO3含量的增加,TWZ玻璃1.53μm波段荧光强度逐渐增大,上转换发光强度逐渐减弱,4I13/2能级寿命增加;随着B2O3含量的增加,TBZ玻璃1.53μm波段荧光强度、上转换发光强度以及4I13/2能级寿命逐渐减弱。另外,TWZ和TBZ系列玻璃的热稳定性都有所提高。 The absorption spectra, fluorescence emission spectra, upconversion spectra, lifetime of Er^3 ＋ ion and thermal stability of （75 -x ）TeO2-xWO3- 15ZnO-SLa2O3-SNb2O5 （ mole fraction ）-1% （ mass fraction） Er2O3 （TWZ, x = 0, 4, 8, 12, 15） and （75 -y） TeO2-yB2O3-15ZnO-5La2O3-5Nb2O5 （ mole fraction） -1% （ mass fraction） Er2O3 （ TBZ, y = 0, 4, 8, 12, 15 ） glasses were measured and investigated as a function of WO3 （ B2O3 ） component contents. The Ω, （ t = 2, 4, 6） parameters and stimulated emission cross-sections of the Er^3＋ ion were calculated by the Judd-Ofelt theory and the McCumber theory, respectively. The three upconversion emissions at 528, 544, and 660 nm, corresponding to the ^2H 11/2 →^4I15/2, ^4S3/2→^4 I15/2, and ^4F9/2→^4 I15/2 transitions of Er^3＋ ions, respectively, were simultaneously observed under the excitation of 975 nm LD. The effects on spectroscopic characteristics were analyzed and compared with the increasing of WO3 and B2O3 contents. It was found that the fluorescence intensity was at 1.53 μm, and the fluorescence lifetime of ^4 I13/2 level increased with the increasing of WO3 content, while the upconversion intensity decreased. Whereas the fluorescence intensity at 1.53 μm, the upconversion intensity and fluores cence lifetime of ^4 I13/2 level all decreased with the increasing B2O3 content. In addition, the thermal stability of glasses improved with the component contents.
作者 盖娜 周亚训 戴世勋 徐铁峰 聂秋华
机构地区 宁波大学信息科学与工程学院
出处 《中国稀土学报》 CAS CSCD 北大核心 2009年第2期189-193,共5页 Journal of the Chinese Society of Rare Earths
基金 浙江省自然科学基金(Y107070) 宁波市自然科学基金(2006A610026) 宁波大学王宽诚幸福基金资助项目
关键词 光谱性质 碲酸盐玻璃 ER3+ J-O理论 稀土 spectroscopic properties tellurite glasses Er^3＋ ion J-O theory rare earths
分类号 TQ171.1 [化学工程—玻璃工业]
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参考文献16

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中国稀土学报
2009年 第2期

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