碱金属和碱土金属对掺Tm^(3+)碲酸盐玻璃光谱性质的影响  

Spectroscopic properties of Tm^(3+) -doped alkaline/alkaline-earth metal modified tellurite glasses

作　　者：孙坚[1,2] 刘粤惠[1,2] 杨中民[1,2] 陈东丹[1,2] 

机构地区：[1]华南理工大学光通信材料研究所 [2]特种功能材料制备新技术教育部重点实验室,广东广州510640

出　　处：《功能材料》2007年第4期599-601,604,共4页Journal of Functional Materials

基　　金：国家自然科学基金(60307004;50402007);广东省科技攻关资助项目(2005A10602001;2004A10602002);广州市科技计划资助项目(2004Z2-D0131);华南理工大学学生研究计划(SRP)立项资助项目(B09-Y1060180);教育部新世纪人才资助项目(NCET-04-0821);教育部重点实验室资助项目(SYSTT2004-04)

摘　　要：研究了碱金属和碱土金属离子修饰的掺铥碲酸盐玻璃的光谱性质,讨论了碱金属和碱土金属对掺铥碲酸盐玻璃J-O强度参数、1．46μm荧光发射强度、荧光半高宽、受激发射截面等光谱性质的影响,并与一些传统氧化物玻璃进行了比较。研究表明碱金属Li^+和碱土金属Ba^(2+)掺碲酸盐玻璃更适宜用作掺铥光放大器基质。含Li^+的碲酸盐玻璃展现出7．90×10^(-21)cm^2的高发射截面;含Ba^(2+)碲酸盐玻璃具有7．55×10^(-21)cm^2的高发射截面、103nm的荧光半高宽。This paper reports the spectroscopic properties of Tm^3＋-doped tellurite glasses. The effects of alkaline/alkaline-earth metal composition on the spectroscopic properties of Tm^3＋ in tellurite glasses are investigated. A strong correlation between the alkaline/alkaline-earth metal content and the spectroscopic parameters, such as Judd-Ofelt intensity parameters,fluorexcent intensity at 1.46μm,full width at half-maximum and emission cross sections, has been observed. The tellurite glass with lithium oxide exhibits the largest calculated stimulate＆emission cross-section of 7. 90 × 10^-21 cm^2 among the tellurite studied; The tellurite glass with barium oxide has a large calculated stimulate＆emission cross-section of 7.55 × 10^-21cm^2 and a broadband near infrared emission at 1.46μm with a full width at half-maximum 103nm.

关 键 词：碲酸盐玻璃 光谱性质 Judd—Ofelt参数 

分 类 号：TQ171[化学工程—玻璃工业]