Ho3+ doped Na5Y9F32 single crystals doubly sensitized by Er3+ and Yb3+ for efficient 2.0 μm emission

被引：16

作者：

Ding, Benli ^{[1
]}

Zhou, Xiong ^{[1
]}

Zhang, Jianli ^{[1
]}

Xia, Haiping ^{[1
]}

Song, Hongwei ^{[2
]}

Chen, Baojiu ^{[3
]}

机构：

[1] Ningbo Univ, Key Lab Photoelect Mat, Ningbo 315211, Zhejiang, Peoples R China

[2] Jilin Univ, Coll Elect Sci & Engn & Coll Phys, State Key Lab Integrated Optoelect, Changchun 130012, Jilin, Peoples R China

[3] Dalian Maritime Univ, Dept Phys, Dalian 116026, Liaoning, Peoples R China

来源：

JOURNAL OF LUMINESCENCE | 2020年 / 223卷

基金：

中国国家自然科学基金;

关键词：

Er3+/Ho3+/Yb3+; 2.0 mu m; Na5Y9F32 single crystal; Energy transfer; ENERGY-TRANSFER; UP-CONVERSION; SPECTROSCOPIC PROPERTIES; TM3+; GLASSES; FLUORESCENCE; 2.0-MU-M;

D O I：

10.1016/j.jlumin.2020.117254

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The 2.0 mu m spectral characteristics of the 980 nm LD pumped Er3+/Ho3+/Yb3+ tri-doped Na5Y9F32 single crystals grown by an improved Bridgman method were investigated with the help of their absorption spectra, emission spectra and decay curves. The introduction of Yb3+ and Er3+ greatly improves the 2.0 fluorescence intensity through joint energy transfer processes from Yb3+ to Er3+, and Er3+ to Ho3+. The doping concentrations of 0.5 mol% Er3+ and 1.0 mol% Yb3+ ions were optimized to obtain the maximum 2.0 mu m fluorescence intensities for the fixed 0.8 mol% Ho3+/1 mol% Yb3+ and 0.8 mol% Ho3+/0.5 mol% Er3+ doped Na5Y9F32 single crystals. Besides, according to the absorption and fluorescence spectra of the crystals, the absorption and emission crosssections were calculated, and excellent gain performance was also obtained. Meanwhile, the maximum 2.0 mu m emission lifetime of Er3+/Ho3+/Yb3+ tri-doped Na5Y9F32 single crystal can reach similar to 21.82 ms. The energy transfer mechanisms among the three rare-earth ions were further investigated by calculating energy transfer microparameters (CDA) and efficiencies. The excellent properties in both intense emission at 2.0 mu m and chemical stability obtained in the Er3+/Ho3+/Yb3+ tri-doped Na5Y9F32 single crystals make them promising candidate material for 2.0 mu m laser.

引用

页数：9

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