Er^(3+)/Tm^(3+)共掺碲酸盐玻璃1.8μm波段光谱特性研究  

Investigation on 1.8μm Spectral Properties of Er^(3+)/Tm^(3+)Co-doped Tellurite Glasses

作　　者：陈安民 魏敏 马飞云 崔令江[2] 张鹏 王传杰[1,2] CHEN Anmin;WEI Min;MA Feiyun;CUI Lingjiang;ZHANG Peng;WANG Chuanjie(Weihai Optical Fiber Preform Engineering Research Center,Weihai Changhe Optical Technology Co.,Ltd.,Weihai 264200,China;School of Materials Science and Engineering,Harbin Institute of Technology at Weihai,Weihai 264209,China;Department of Technology,Hongan Group Co.,Ltd.,Weihai 264200,China)

机构地区：[1]威海长和光导科技有限公司威海市光纤预制棒工程技术研究中心,山东威海264200 [2]哈尔滨工业大学(威海)材料科学与工程学院,山东威海264209 [3]宏安集团有限公司技术部,山东威海264200

出　　处：《材料研究与应用》2022年第4期579-583,共5页Materials Research and Application

基　　金：国家自然科学基金项目(51875126)。

摘　　要：为分析Er^(3+)/Tm^(3+)共掺碲酸盐玻璃的发光性能,得到1.8μm处的高强度发光。采用熔融退火法,制备了Tm_(2)O_(3)掺杂浓度(摩尔百分数)为0.25%、0.5%、1%、1.5%和2%的75TeO_(2)-20ZnO-5La_(2)O_(3)-0.5Er_(2)O_(3)碲酸盐玻璃。对碲酸盐玻璃进行吸收光谱的测定,同时研究其在1.8μm波段的光谱特性。吸收光谱测试结果表明:碲酸盐玻璃在800 nm附近的吸收峰为Er^(3+)的4 I_(15/2)→4 I_(9/2)跃迁和Tm^(3+)的^(3) H_(6)→^(3) H_(4)跃迁的叠加,说明两种稀土离子都得到了很好的溶解混合;发射光谱在1200—2200 nm范围内,在1.53和1.8μm处出现了发射峰,且1.53μm处的发光远弱于1.8μm处的;1.8μm处的发射峰是Tm^(3+)离子在^(3)F_(4)→^(3)H_(6)跃迁产生的,由峰值波长分别为1740和1857 nm的分解谱线组成,此时该玻璃发生了荧光俘获效应,随着Tm_(2)O_(3)掺杂浓度的增加,1740 nm处分解谱线的相对强度逐渐降低,而1857 nm处分解谱线相对强度逐渐增大。该玻璃同时具有较大的受激吸收截面以及发射截面,有望成为一种新型的2μm波段的激光玻璃材料。In order to analyze the luminescence properties of Er^(3+)/Tm^(3+)co-doped tellurite glass to obtain high-intensity luminescence at 1.8μm.75TeO_(2)-20ZnO-5La_(2)O_(3)-0.5Er_(2)O_(3) tellurite glasses with Tm_(2)O_(3) doping concentrations of 0.25,0.5,1,1.5 and 2 mol%were prepared by melt annealing.The absorption spectrum test shows that the absorption peak near 800 nm produces the superposition of ^(4) I_(15/2)→^(4) I_(9/2) transition of Er^(3+)and ^(3) H_(6)→^(3) H_(4) transition of Tm^(3+),indicating that the two rare earth ions have been well dissolved and mixed.The emission spectrum has two emission peaks at 1.53μm and 1.8μm in the range of 1200—2200 nm,and the fluorescence emission spectrum generated by the ^(3)F_(4)→^(3)H_(6) energy level transition of Tm^(3+)ion is composed of two spectral lines with peak centers of 1740 nm and 1857 nm respectively.At this time,the fluorescence capture effect occurs,resulting in the gradual decrease of the relative intensity of 1740 nm and the gradual increase of the relative intensity of 1857 nm with the increase of Tm_(2)O_(3) doping concentration.The glass has both a large stimulated absorption cross-section and a stimulated emission cross-section,and is expected to become a new laser glass material in 2μm band.

关 键 词：碲酸盐玻璃 稀土掺杂 激发与发射 光学材料 光谱分析 

分 类 号：TQ171[化学工程—玻璃工业]