1 October 2009 Application to temperature sensor based on near-infrared emissions of Nd3+:Er3+:Yb3+ codoped Al2O3
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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.
© (2009) Society of Photo-Optical Instrumentation Engineers (SPIE)
Bao-Cheng Wang, Bao-Cheng Wang, Cheng-Ren Li, Cheng-Ren Li, Bin Dong, Bin Dong, Li Zhang, Li Zhang, Wei Xu, 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 . Submission:
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