Application to temperature sensor based on near-infrared emissions of Nd3+:Er3+:Yb3+ codoped Al2O3

Bao-Cheng Wang; Cheng-Ren Li; Bin Dong; Li Zhang; Wei Xu

doi:10.1117/1.3241987

1 October 2009 Application to temperature sensor based on near-infrared emissions of Nd3+:Er3+:Yb3+ codoped Al2O3

Bao-Cheng Wang, Cheng-Ren Li, Bin Dong, Li Zhang, Wei Xu

Author Affiliations +

Optical Engineering, Vol. 48, Issue 10, 104401 (October 2009). https://doi.org/10.1117/1.3241987

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 ⁴F_5/2+²H_9/2 →⁴I_9/2 and ⁴F_3/2 →⁴I_9/2 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.

©(2009) Society of Photo-Optical Instrumentation Engineers (SPIE)

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Bao-Cheng Wang, Cheng-Ren Li, Bin Dong, Li Zhang, and Wei Xu "Application to temperature sensor based on near-infrared emissions of Nd3+:Er3+:Yb3+ codoped Al2O3," Optical Engineering 48(10), 104401 (1 October 2009). https://doi.org/10.1117/1.3241987

Published: 1 October 2009

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