The Journal of Physical Chemistry C · 2008 · 89 citations · 23 references
EngineeringLaser ScienceTemperature DependenceLaser ApplicationsLaser MaterialLuminescence PropertyHigh-power LasersOptical PropertiesOptical PumpingPhotonicsElectrical EngineeringPhotoluminescenceEmission Intensity−temperature DependenceUpconversion LuminescenceLaser ClassificationSpectroscopyApplied PhysicsVisible Upconversion LuminescencePhosphorescenceRed Upconverted Emission
A red upconverted emission is reported for yttria codoped with Eu3+ and Yb3+ upon excitation by a 970 nm laser diode. The concentration dependence and temperature dependence down to 10 K of the upconverted emission have been investigated. Two alternative models are presented to simulate the emission intensity−temperature dependence.
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Upconversion processes in coupled ion systems
F. Auzel · Journal of Luminescence · 1990 · 370 citations