掺铒铋酸盐玻璃和掺铒碲酸盐玻璃的荧光俘获和浓度猝灭效应  

COMPARATIVE INVESTIGATION OF FLUORESCENCE TRAPPING AND CONCENTRATION QUENCHING IN ERBIUM-DOPED BISMUTH-AND TELLURITE-BASED GLASSES

作　　者：盖娜[1] 周亚训[1] 戴世勋[1] 徐铁峰[1] 聂秋华[1] 

机构地区：[1]宁波大学信息科学与工程学院,浙江宁波315211

出　　处：《硅酸盐学报》2009年第1期92-97,共6页Journal of The Chinese Ceramic Society

基　　金：浙江省自然科学基金(Y107070);宁波市自然科学基金(2006A610026)资助项目。

摘　　要：用高温熔融法制备了系列掺铒铋酸盐和碲酸盐玻璃,用分光光度计测试吸收光谱.并用荧光光谱仪测试了不同铒离子掺杂浓度时玻璃样品的荧光光谱和荧光寿命。结果显示:掺铒后。铋酸盐玻璃和碲酸盐玻璃中存在着强烈的荧光俘获和浓度猝灭效应。随着玻璃中铒离子掺杂浓度的增加,1.53μm波段荧光谱展宽,1560 nm波长处荧光次峰增强,但相对于铋酸盐玻璃,碲酸盐玻璃具有更为强烈的荧光俘获效应。同时,随着铒离子掺杂浓度的增加,~4I_(13/2)能级荧光寿命和153μm波段荧光强度呈先增加后减小趋势。根据Dexter能量转移理论,计算并分析比较了这2种宽带玻璃系统中铒离子发生浓度猝灭的临界距离R_0及相互作用参数C_(Er-Er)。A series of Er_2O_3-doped bismuth-and tellurite-based glasses were prepared by the high-temperature melt-quenching method.The absorption spectra were measured by using a Perkin-Eimer-Lambda 950 ultraviolet-visible-near infrared spectropho- tometer.The fluorescence emission spectra and fluorescence lifetime of Er^(3+)were investigated by using a Jobin-Yvon-Triax 550 re- cording fluorescence spectroscope.It was found that there are intense fluorescence trapping and concentration quenching effects in these two...

关 键 词：铒 铋酸盐玻璃 碲酸盐玻璃 1.53μm波段荧光 荧光俘获 浓度猝灭 

分 类 号：TQ171.1[化学工程—玻璃工业]