WO3对掺铒碲酸盐玻璃光谱性质的影响  

Effects of WO_3 on optical properties of Er^(3+)-doped tungsten-tellurite glasses

作　　者：贾相华[1] 吕树臣[2] 孙江亭[2] 彭鸿雁[1] 张梅恒[1] 

机构地区：[1]牡丹江师范学院物理系,牡丹江157012 [2]哈尔滨师范大学物理系,哈尔滨150080

出　　处：《物理学报》2008年第9期5978-5982,共5页Acta Physica Sinica

基　　金：超硬材料黑龙江省高校重点建设经费,凝聚态物理黑龙江省重点学科经费,实验室黑龙江省教育厅科学技术研究项目(批准号:10541241)资助的课题~~

摘　　要：制备了掺铒碲钨酸盐玻璃(80-x)TeO2-(10+x)WO3-8BaO-2Na2O-0.5Er2O3(x=0,5,10,15,20)玻璃,研究了WO3对掺铒碲钨酸盐玻璃的光谱性质.研究发现:随着WO3含量的增加,Ω4,Ω6先增加后减小,受激发射截面也是先增加后减小,而Ω2的变化则相反.由McCumber理论计算了掺铒碲钨酸盐玻璃在1.5μm的受激发射截面,其最大受激发射截面为0.96×10-21cm2,Er3+的4I13/2→4I15/2的跃迁发射荧光光谱的最大荧光半高宽为82 nm.同时,实验发现,在976 nm抽运下,掺铒碲酸盐玻璃存在较强的荧光上转换现象,随WO3含量的增加,上转换荧光强度呈降低的趋势.Tungsten-tellurite glasses with the molar compositions of （60 ＋ x ）TEO2-（30- x ）WO3-8BaO-2Na2O-0.5Er2O3 （x = 0,5, 10, 15, 20） have been prepared. Effects of WO3 on optical properties of Er^3＋ -doped tungsten-tellurite glasses have been discussed. Along with the WO3 content increasing, Ω2 and Ω6 first increase and then decrease, and the stimulated emission cross-section also behaves in like manner, while Ω4 changes contrarily. According to the McCumber theory, the maximum peak of σe is calculate to be 1.00×10^-21 cm^2 at 1.55 μm. The maximum FWHM of Er^3＋ ^4Ⅰ13/2→^4Ⅰ15/2 emission spectrum is 82 nm. In addition, the intensity of upconversion luminescence of the Er^3＋ -doped tungsten-tellurite glasses decreases rapidly with the increasing of WO3 content.

关 键 词：碲钨酸盐玻璃 Er^3+光谱性质 Judd-Offelt理论 

分 类 号：TQ171.11[化学工程—玻璃工业]