无机材料学报2025，Vol.40Issue(5)：521-528,8.DOI:10.15541/jim20240441
980 nm LD泵浦下Dy3+/Yb3+共掺碲酸盐玻璃3 μm波段中红外宽带发光特性
Broadband 3 μm Mid-infrared Emission in Dy3+/Yb3+Co-doped Tellurite Glass under 980 nm LD Excitation
摘要
Abstract
Three to five μm mid-infrared laser has broad applications in atmospheric communication,environmental monitoring,medical treatment,and defense.Here,a series of glasses with compositions of 70TeO2-25ZnO-5La2O3,doped with Dy3+or Yb3+,and co-doped with Dy3+/Yb3+,were prepared using the melt-quenching method in an inert atmosphere-protected glovebox.Thermal properties,structural characteristics,hydroxyl content,and mid-infrared luminescence of the glasses were characterized through measurements such as differential scanning calorimetry(DSC),X-ray diffraction(XRD),Raman spectra,transmission spectra,and 3 μm band fluorescence spectra.The results indicate that 70TeO2-25ZnO-5La2O3 glass possesses high resistance to crystallization(ΔT=101℃)and low phonon energy(760 cm-1).Under 980 nm laser diode(LD)excitation,Dy3+/Yb3+co-doped tellurite glass produces a broadband fluorescence emission around 3 μm region,with a full width at half maximum(FWHM)of 326 nm.This is attributed to the high energy transfer efficiency from Yb3+to Dy3+(98.74%)and the low hydroxyl absorption coefficient near 3 μm(0.32 cm-1).Based on Judd-Ofelt and Dexter theories,spontaneous radiative transition probability,fluorescence branching ratio,and other spectroscopic parameters of Dy3+ions,as well as microscopic parameters of Yb3+→Dy3+energy transfer,were calculated.The primary energy transfer pathway is analyzed and identified as Yb3+:2F5/2→Dy3+:6H7/2,6F9/2.This study demonstrates that the low-hydroxyl Dy3+/Yb3+co-doped TeO2-ZnO-La2O3 glass can serve as an excellent 3 μm mid-infrared gain medium.关键词
中红外/Dy3+/Yb3+共掺/Judd-Ofelt理论/Dexter理论/能量传递微观参数Key words
mid-infrared/Dy3+/Yb3+co-doping/Judd-Ofelt theory/Dexter theory/energy transfer microparameter分类
化学工程引用本文复制引用
潘雨舟,何法鉴,徐路路,戴世勋..980 nm LD泵浦下Dy3+/Yb3+共掺碲酸盐玻璃3 μm波段中红外宽带发光特性[J].无机材料学报,2025,40(5):521-528,8.基金项目
国家自然科学基金(62090064)National Natural Science Foundation of China(62090064) （62090064）
