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|Title:||Up-conversion luminescence saturation under pulsed excitation of erbium-doped, SiO2TiO2 solgel powders|
|Abstract:||The intensity of erbium up-conversion luminescence could be limited by a saturation effect due to increased pump power. We studied the luminescence saturation of the 550 nm emission on erbium-doped, SiO2TiO 2 solgel powders under pulsed excitation at 979 and 1532 nm. From the latter, the up-converted luminescence intensity decreased with increasing excitation power, whereas no saturation was observed at 979 nm excitation. We proposed that the saturation effect is determined by the pump power, the erbium content and the lifetime of the corresponding first excited states at different pumping schemes. © 2010 Elsevier B.V. All rights reserved.|
|Appears in Collections:||Producción científica UdeG (prueba)|
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