14 August 2001 Auger upconversion process in Cr3+and Nd3+doped solids
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Proceedings Volume 4419, 4th Iberoamerican Meeting on Optics and 7th Latin American Meeting on Optics, Lasers, and Their Applications; (2001) https://doi.org/10.1117/12.437205
Event: IV Iberoamerican Meeting of Optics and the VII Latin American Meeting of Optics, Lasers and Their Applications, 2001, Tandil, Argentina
Abstract
In this work we applied the Thermal Lens (LT) technique to determine the upconversion parameter for Cr3+:LiSrAlF6, Cr3+:LiSrGaF6, Cr3+:SrAlF5 and Nd3+:ZBLAN. The measures for the Cr3+ doped fluorides were accomplished at 15 degrees C to eliminate the suppression effect due to temperature and upon excitation in the cw regime. We used Ar+ laser and dye laser radiation for the Cr3+ doped crystals and 514 nm and 796.7 nm for the Nd3+ doped glasses. We observed a nonlinear increase of the TL signal with excitation power, characterizing a fluorescence quantum efficiency decrease that was attributed to the Auger effect. A theoretical model was developed to obtain (gamma) from the TL data.
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V. Pilla, V. Pilla, A. A. Andrade, A. A. Andrade, Tomaz Catunda, Tomaz Catunda, Hans Jenssen, Hans Jenssen, Arlete Cassanho, Arlete Cassanho, } "Auger upconversion process in Cr3+and Nd3+doped solids", Proc. SPIE 4419, 4th Iberoamerican Meeting on Optics and 7th Latin American Meeting on Optics, Lasers, and Their Applications, (14 August 2001); doi: 10.1117/12.437205; https://doi.org/10.1117/12.437205
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