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

作者：Wang Bao Cheng^*; Li Cheng Ren; Dong Bin; Zhang Li; Xu Wei

来源：Optical Engineering, 2009, 48(10): 104401.

DOI：10.1117/1.3241987

• Nd3+:Er3+:Yb3+ codoped Al2O3
• temperature sensor
• near-infrared

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 F-4(5/2) + H-2(9/2) -> I-4(9/2) and F-4(3/2) -> I-4(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.

• 出版日期2009-10
• 单位辽宁师范大学