Tm^(3+)/Ho^(3+)共掺硫卤玻璃的2.00μm荧光特性研究  

2.00 μm Emission Properties of Tm^(3+)/Ho^(3+) Co-doped Chalcohalide Glasses

作　　者：魏淑林[1,2] 许银生[1,3] 张培晴[1,2] 陈飞飞[1,2] 聂秋华[1,2] 徐铁峰[1,2] 戴世勋[1,2] 

机构地区：[1]宁波大学红外材料及器件实验室,宁波315211 [2]宁波大学信息科学与工程学院,宁波315211 [3]宁波大学材料科学与化学工程学院,宁波315211

出　　处：《无机材料学报》2012年第7期711-715,共5页Journal of Inorganic Materials

基　　金：国家科技部重大国际合作项目(2011DFA12040);973计划项目(2012CB722703);国家自然科学基金(61177087;60978058);教育部新世纪优秀人才项目(NCET-10-0976);浙江省杰出青年基金(R1101263);宁波市新型光电功能材料及器件创新团队项目(2009B21007);宁波大学王宽诚幸福基金~~

摘　　要：通过真空熔融淬冷法制备了不同浓度Tm3+/Ho3+离子共掺的70GeS2-20In2S3-10CsI玻璃样品,分析了样品的热稳定性及拉曼光谱,测试了样品的吸收光谱以及808 nm激光泵浦下Ho3+:5I7→5I8辐射跃迁对应的2.00μm荧光光谱特性.结果表明:Tm3+离子掺杂浓度为0.25mol%时,随着Ho3+离子掺杂浓度从0.05mol%增加到0.125mol%,Tm3+离子在1.86μm的发光强度逐渐减弱,Ho3+离子2.00μm荧光明显增强,表明Tm3+/Ho3+离子之间存在有效的能量转移.2 μm laser has many potential applications on the medical surgery,laser radar,and pollution monitoring etc.Tm3＋ and Ho3＋ ions co-doped 70GeS2-20In2S3-10CsI chalcohalide glasses were synthesized by vacuumed meltingquenching technique.The DSC curves and Raman spectra showed that these glasses had good thermal stability and low phonon energy,respectively.The absorption and emission characteristics were evaluated with an emphasis on the 2.00 μm fluorescence from Ho3＋： 5I7→5I8 transition.Under 808 nm excitation,the infrared emission bands extending from 1.80 μm to 2.10 μm can be seen on the emission spectra of the Tm3＋ and Ho3＋ ions co-doped glasses.This broad emission was consisted of two emission bands centered at 1.86 and 2.00 μm,corresponding to the optical transitions Tm3＋：3F4→3F5 and Ho3＋：5I7→5I8,respectively.At fixed Tm3＋ ions concentration,the intensity of 2.00 μm emission increased with Ho3＋ ions concentration increasing from 0.05mol% to 0.125mol%.The enhanced emission of Ho3＋ ions gives another route to obtain the 2.00 μm infrared laser.

关 键 词：铥/钬共掺 硫卤玻璃 能量转移 荧光特性 

分 类 号：TQ171[化学工程—玻璃工业]