Ce^(3+)对掺Er^(3+)碲铌锌钠玻璃光谱性质的影响  

Influence of Ce^(3+) on the spectral properties of Er^(3+)-doped telluri um-niobium-zinc-sodium glasses

作　　者：张汇锋[1] 吴一[1] 冯诚[1] 

机构地区：[1]中国人民解放军92724部队

出　　处：《光电子．激光》2013年第9期1733-1738,共6页Journal of Optoelectronics·Laser

基　　金：国家自然科学基金(61177087)资助项目

摘　　要：用高温熔融法制备了摩尔组分百分比为75TeO2-10Nb2O5-10ZnO-5Na2O-0.5Er2O3-xCe2O3(x=0.00、0.25、0.50、0.75、1.00)的碲酸盐玻璃样品。测量了玻璃样品的吸收光谱、上转换光谱、拉曼光谱和荧光光谱。结合Judd-Ofelt(J-O)理论计算了玻璃样品的强度参数Ωt(t=2、4、6)、自发辐射跃迁几率A、荧光分支比β和辐射寿命τrad,并用McCumber理论计算得到了Er3+的受激发射截面。比较了玻璃样品中Er3+的放大器带宽品质因子(σpeak e×FWHM)和增益品质因子(σpeak e×τm),分析了Er3+/Ce3+间能量转移(ET)机理以及Ce3+对上转换发光的抑制作用。研究表明,适量Ce3+的引入对于掺Er3+碲铌锌钠玻璃的光谱特性有一定的提高作用。Er^3＋-doped tellurite glasses with composition in mol percent of 75TeO2-10Nb2O5-10ZnO- 5Na2O-0.5Er2O3-xCe2O3 （x= 0. 00, 0. 25,0. 50,0. 75,1.00） were prepared by conventional meltquenching method. The absorption spectra, up-conversion luminescence spectra, Raman spectra and the fluorescence spectra of the glasses were measured. The intensity parameters Ωt （t = 2,4,6）, spontaneous radiative transition probability A, fluorescence branching ratio β and radiative lifetime rrad were calculated by Judd-Ofelt theory, and the Er^3＋ stimulated emission cross-section was calculated by McCumber theory. The bandwidth quality factor （σe^peak×FWHM） and gain quality factor （σe^peak×τm） Of Er^3＋ ions were compared between the glasses,and the energy transfer （ET） mechanism between Er^3＋/Ce^3＋ ions and the suppression effect of Ce^3＋ ions on up-conversion luminescence were also analyzed. The studies indicate that the addition of appropriate amount of Ce^3＋ ions can improve the spectral properties of Er^3＋- doped tellurium-niobium-zinc-sodium glasses.

关 键 词：碲酸盐玻璃 光谱性质 Er^3＋ Ce^3＋ 

分 类 号：TQ171.11[化学工程—玻璃工业]