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Proceedings Paper

Yb3+-doped CaF2 cubic fluoride crystal: spectroscopic properties, concentration quenching analysis, and laser optimization
Author(s): G. Boulon; M. Ito; Y. Guyot; C. Goutaudier; A. Brenier; A. Jouini; H. Sato; T. Fukuda
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Paper 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.

Paper Details

Date Published: 1 August 2007
PDF: 13 pages
Proc. SPIE 6785, ROMOPTO 2006: Eighth Conference on Optics, 678503 (1 August 2007); doi: 10.1117/12.755474
Show Author Affiliations
G. Boulon, Claude Bernard/Lyon I Univ., CNRS (France)
M. Ito, Claude Bernard/Lyon I Univ., CNRS (France)
Y. Guyot, Claude Bernard/Lyon I Univ., CNRS (France)
C. Goutaudier, Claude Bernard/Lyon I Univ., CNRS (France)
A. Brenier, Claude Bernard/Lyon I Univ., CNRS (France)
A. Jouini, Tohoku Univ. (Japan)
H. Sato, Tohoku Univ. (Japan)
T. Fukuda, Tohoku Univ. (Japan)

Published in SPIE Proceedings Vol. 6785:
ROMOPTO 2006: Eighth Conference on Optics
Valentin I. Vlad, Editor(s)

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