Study of Yb3+-Yb3+ and Yb3+-Ce3+ energy transfer in Yb,Ce : CaGd4Si3O13 (Yb,Ce : CGS) crystals

Authors
Voroshilov, IV Lebedev, VA Gavrilenko, AN Ignatiev, BV Isaev, VA Shestakov, A
Citation
Iv. Voroshilov et al., Study of Yb3+-Yb3+ and Yb3+-Ce3+ energy transfer in Yb,Ce : CaGd4Si3O13 (Yb,Ce : CGS) crystals, J PHYS-COND, 12(12), 2000, pp. L211-L215
Citations number
5
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
JOURNAL OF PHYSICS-CONDENSED MATTER
ISSN journal
09538984 → ACNP
Volume
12
Issue
12
Year of publication
2000
Pages
L211 - L215
Database
ISI
SICI code
0953-8984(20000327)12:12<L211:SOYAYE>2.0.ZU;2-D
Abstract
The Yb radiative lifetime of 923 mu s has been determined by the extrapolat ion to the zero concentration of Yb. Quenching of the Yb luminescence is ob served in the Yb3+,Ce3+:CaGd4Si3O13 (Yb,Ce:CGS) crystals due to their intri nsic defects and Ce3+ ions. The main quenching mechanism is the energy migr ation through Yb ions to the defects with a micro-parameter C-DD(Yb-Yb) = 1 .0 x 10(-38) cm(6) s(-1), and the Yb3+ --> Ce3+ energy transfer with a micr o-parameter C-DA = 5.5 x 10(-44) cm(6) s(-1).