Review of Scientific Instruments · 1997 · 55 citations · 5 references
Natural SciencesMaterials SciencePhysicsOptical MaterialsOpticsPhotonicsFiber OpticsFluorescence SpectroscopyGlass MaterialsOptical FibersOptical GlassesTemperature MeasurementFluorescence Decay AnalysisFluorescence Emission SpectraFluorescence LifetimeFluorescence Lifetime MeasurementsOptical ThermometryTemperature DependenceTemperature Dependence Of FluorescenceThermo-optic Properties
An analysis of the fluorescence decay behavior of Pr 3+ in ZBLAN glass, at different concentrations, has been undertaken, for applications of the material to fiber optic thermometry. The study has shown that with the temperature increase, the measured lifetimes of the fluorescence emission from the Pr 3+ doped glass are also seen to increase slowly. The results obtained are found not to support a simple two-level model based on the thermalization of the states involved but a new three-level model that has been introduced can explain the observed results in a very satisfactory way. The application of the work in optical thermometry is discussed and comparisons with other systems are made.
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