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1 August 2007 Yb3+-doped CaF2 cubic fluoride crystal: spectroscopic properties, concentration quenching analysis, and laser optimization
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Proceedings Volume 6785, ROMOPTO 2006: Eighth Conference on Optics; 678503 (2007) https://doi.org/10.1117/12.755474
Event: ROMOPTO 2006: Eighth Conference on Optics, 2006, Sibiu, Romania
Abstract
The ytterbium-doped crystals emitting around 1 μm under laser-diode pumping between 900-980 nm have received an increasing interest in recent years as solid-state laser materials for high power or ultra-fast lasers. In this paper, our main objective is to contribute to Yb3+-doped fluorides mainly on CaF2 cubic host which are characterized by a high value of the thermal conductivity (9.5 W m-1 K-1) as high as YAG. Yb3+-doped CaF2, mono-doped and concentration gradient fibres were grown by both, the laser heated pedestal growth (LHPG) method and by the Czochralski method. Concerning Yb3+ excited state dynamics, the concentration dependence of the 2F5/2 decay time shows a competition between self-trapping and self-quenching processes. Main parameters useful for a theoretical approach of laser potentiality will be given and laser emission under InGaAs laser-diode pumping will be shown.
© (2007) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
G. Boulon, M. Ito, Y. Guyot, C. Goutaudier, A. Brenier, A. Jouini, H. Sato, and T. Fukuda "Yb3+-doped CaF2 cubic fluoride crystal: spectroscopic properties, concentration quenching analysis, and laser optimization", Proc. SPIE 6785, ROMOPTO 2006: Eighth Conference on Optics, 678503 (1 August 2007); https://doi.org/10.1117/12.755474
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