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Optical Engineering

Application to temperature sensor based on near-infrared emissions of Nd3+:Er3+:Yb3+ codoped Al2O3
Author(s): Bao-Cheng Wang; Cheng-Ren Li; Bin Dong; Li Zhang; Wei Xu
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Paper Abstract

Nd3+ :Er3+:Yb3+ codoped Al2O3 powder is prepared by the nonaqueous sol-gel method and pressed into a small wafer. The two-stage sensitization processes for energy transfer among Yb3+, Er3+, and Nd3+ are discussed. Under a 978-nm semiconductor laser excitation, the photoluminescence intensities at 813 and 887 nm, corresponding to the 4F5/2+2H9/24I9/2 and 4F3/24I9/2 transitions of Nd3+ ions, enhance monotonously with the increasing temperature, and the fluorescence intensity ratio of the near-IR emissions can be fitted the exponential function R=3.12 exp(-1150/T) in the temperature range of 375 to 889 K. The maximum sensitivity is 0.0015 K-1 at 574.3 K. The data are of undoubted repeatability, and the material is applicable for sensitive, high-temperature measurement.

Paper Details

Date Published: 1 October 2009
PDF: 4 pages
Opt. Eng. 48(10) 104401 doi: 10.1117/1.3241987
Published in: Optical Engineering Volume 48, Issue 10
Show Author Affiliations
Bao-Cheng Wang, Liaoning Normal Univ. (China)
Cheng-Ren Li, Liaoning Normal Univ. (China)
Bin Dong, Dalian Nationalities Univ. (China)
Li Zhang, Liaoning Normal Univ. (China)
Wei Xu, Liaoning Normal Univ. (China)

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