Article,

Optical thermometry through infrared excited upconversion fluorescence emission in Er3+- and Er3+-Yb3+-doped chalcogenide glasses

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IEEE JOURNAL OF QUANTUM ELECTRONICS, 35 (3): 395-399 (1999)
DOI: 10.1109/3.748846

Abstract

Optical thermometry based upon infrared excited upconversion fluorescence emission in Er3+- and Er3+-Yb3+- doped Ga2S3:La2O3 chalcogenide glasses excited at 1.54 and 1.06 mu m, respectively, is presented, Temperature sensing in the region of 20 degrees C-220 degrees C with 0.3 degrees C accuracy using excitation powers readily obtainable from commercially available semiconductor lasers was achieved, The temperature sensing approach is independent of fluctuations in excitation intensity and transmission and requires a simple and low-cost signal detection and processing system. The results also indicate that the glassy host material plays a major role in the performance of the sensing system.

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