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Fluorescence thermometer based on peak intensity of photoluminescence (PL) is evaluated using Ti doped sapphire (Al2O3) crystal. Broad PL peak is seen at lambda=725 nm. PL peak intensity is found to be sensitive to temperature. Fluorescence thermometer based on temperature dependence of PL peak intensity is reported using Li doped sapphire crystal.
Temperature dependence of peak intensity and peak intensity ratio of photoluminescence (PL) from composite thermo-sensor with Cr doped garnet crystal (YAG) is evaluated for fluorescence thermometer. Peak intensity of PL decreases with temperature. Intensity ratio of PL peaks increases linearly with temperature from 300 to 500 K. Composite sensor with Cr doped YAG is potentially useful sensor material...
A fiber-optic fluorescence thermometer using the bulk fluorescence material is a useful technique for temperature measurement in extraordinary conditions. The thin film fabrication of the fluorescence material enables the temperature mapping of an object with temperature distribution. In this paper, the fluorescence films are fabricated by various fabrication methods such as laser ablation and spin...
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