Up-conversion (UC) of near-infrared radiation to visible light has received much attention because of its use in conversion of solar radiation, luminescence thermometry, biosensing, and anti-counterfeiting applications. However, the main...
We present the excitation power and doping concentration dependent upconversion properties of SrF2:Yb3+,Er3+ single crystals. The determined optical properties of this bulk material can serve as benchmark values for cubic-phase nanomaterials.
CaF(2)-SrF(2)-YbF(3) fluoride ceramics of high optical quality was prepared, and its absorption, fluorescence, and laser oscillation properties were investigated. Oscillation slope efficiency that was only a few percent lower than that for a single crystal of similar composition was demonstrated under diode pumping.
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