Luminescence and temperature properties of Y2O3: Ho3+/Yb3+ millimeter crystals obtained by laser annealing

被引：3
作者：
Ran, Qiu-Yue [1 ]
Lian, Yu-Long [1 ,2 ]
Tang, Yong [1 ]
Hao, Jian-Hong [1 ]
Bai, Yun-Feng [1 ]
机构：
[1] Yangtze Normal Univ, Coll Elect Informat & Engn, Key Lab Micro Nano Optoelect Devices & Intelligent, Chongqing 408100, Peoples R China
[2] Fujian Normal Univ, Coll Phys & Energy, Fuzhou 350117, Peoples R China
来源：
APPLIED PHYSICS B-LASERS AND OPTICS | 2024年 / 130卷 / 03期
关键词：
UP-CONVERSION LUMINESCENCE; ER3+; EXCITATION; DEPENDENCE; PHOSPHORS; POWDER; POWER;
D O I：
10.1007/s00340-024-08181-5
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
FIR temperature measurement based on thermally coupled levels of rare earth ions has been widely studied, but its sensitivity is limited by the thermal coupling levels' spacing. In this letter, a transition from non-thermally coupled levels of Ho3+ to thermally coupled levels is reported for the first time. It can effectively improve the sensitivity of temperature measurement based on thermal coupling levels. The Ho3+/Yb3+ co-doped Y2O3 millimeter crystals have been prepared by laser annealing. The fluorescence properties of laser-annealed Ho3+/Yb3+ co-doped Y2O3 millimeter crystals were investigated as a function of temperature. It was found that the I-667nm/I-549nm show non-thermal coupling below 453K, but changes to thermal coupling above 453K. The maximum relative sensitivity of I-667nm/I-549nm in thermal coupling is greater than the relative sensitivity of any known thermal coupling energy levels of Ho3+. It provides a new way to improve the sensitivity of thermally coupled FIR temperature measurement.
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页数：7
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