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.
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
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~~
