Discrimination between thermal quenching of the fluorescence and Auger upconversion processes using thermal lens technique
Abbreviated Journal Title
QUANTUM EFFICIENCY; LASER CRYSTALS; SPECTROMETRY; CRLISRALF6; OPERATION; Optics
In this work we used the Thermal Lens (TL) technique to discriminate two important processes responsible to reduce the upper-state population and fluorescence quantum efficiency (eta) in Cr3+ doped colquiriite crystals: the thermal quenching of the fluorescence (TQF) and the Auger upconversion (ETU). We observed a nonlinear increase of the TL signal with laser power due to the decrease of eta by ETU and/or TQF. The analysis of these curves allowed the determination of the thermal load, the increase of the crystal temperature as a function of the pump excitation and the discrimination between ETU and TQF processes. (c) 2006 Elsevier B.V. All rights reserved.
"Discrimination between thermal quenching of the fluorescence and Auger upconversion processes using thermal lens technique" (2007). Faculty Bibliography 2000s. 7531.