Abstract
An investigation of lifetime characteristics of fluorescence, over the wavelength region ∼1.5 μm from pumped Er-doped fibers of various activator concentrations, at temperatures up to ∼950 °C, has been carried out and a significant variation of fluorescence lifetimes with temperature was seen. The results have an impact upon the use of laser or stimulated emission processes at much higher temperatures and for lifetime-based, fiber-optic temperature sensors, showing a very favorable characteristic for such latter applications.
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