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

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5 Author(s)
dos Santos, P.V. ; Dept. de Fisica, Univ. Fed. de Alagoas, Maceio, Brazil ; de Araujo, M.T. ; Gouveia-Neto, A.S. ; Neto, J.A.M.
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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 μm, respectively, is presented. Temperature sensing in the region of 20°C-220°C with 0.3°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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Quantum Electronics, IEEE Journal of  (Volume:35 ,  Issue: 3 )