Numéro |
J. Phys. IV France
Volume 119, November 2004
|
|
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Page(s) | 201 - 202 | |
DOI | https://doi.org/10.1051/jp4:2004119057 |
J. Phys. IV France 119 (2004) 201-202
DOI: 10.1051/jp4:2004119057
Synthesis and spectroscopic characterization of Yb
3+ in Ca
Yb
F
crystals
M. Ito1, C. Goutaudier1, Y. Guyot1, K. Lebbou1, T. Fukuda2 and G. Boulon1
1 Physical Chemistry of Luminescent Materials, Claude Bernard/Lyon1 University, UMR 5620 CNRS, Bât. A. Kastler, 10 rue Ampère, 69622 Villeurbanne Cedex, France
2 Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan
Abstract
Ca
Yb
F
crystals were grown by two different methods: simple melting under CF
4 atmosphere and laser heated pedestal growth (LHPG) method under Ar atmosphere. Spectroscopic characterization has been carried
out to separate different crystallographic site in Ca
Yb
F
crystals and to identify Stark's levels of Yb
3+ transitions. Experimental decay time dependence of Yb
3+ concentration was analyzed by using concentration gradient fiber in order to understand concentration quenching mechanisms.
Energy transfer to unexpected rare earth impurities observed by up-conversion emission spectra in visible region under IR
Yb
3+ ion pumping seems to be an efficient process.
© EDP Sciences 2004