Optical thermometry through infrared excited green upconversion emissions in Er3+-Yb3+ codoped Al2O3

被引：243
作者：
Dong, B. [1 ]
Liu, D. P.
Wang, X. J.
Yang, T.
Miao, S. M.
Li, C. R.
机构：
[1] Dalian Nationalities Univ, Sch Sci, Dalian 116600, Peoples R China
[2] Dalian Univ Technol, Sch Mat Sci & Engn, Dalian 116024, Peoples R China
[3] Liaoning Normal Univ, Coll Phys & Elect Technol, Dalian 116029, Peoples R China
来源：
APPLIED PHYSICS LETTERS | 2007年 / 90卷 / 18期
基金：
中国国家自然科学基金;
关键词：
D O I：
10.1063/1.2735955
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Fluorescence intensity ratio (FIR) variation of green upconversion emissions at 523 and 545 nm in the Er3+-Yb3+ codoped Al2O3 has been studied as a function of temperature using a 978 nm semiconductor laser diode as an excitation source. In the temperature range of 295-973 K, the maximum sensitivity and the temperature revolution derived from the FIR technique are approximately 0.0051 K-1 and 0.3 K, respectively. The Er3+-Yb3+ codoped Al2O3 material with the highest operating temperature up to 973 K, the higher temperature revolution, and the fluorescence efficiency indicated that it is promising for applications in optical high temperature sensor. (c) 2007 American Institute of Physics.
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