Title of article
Optical bleaching of Cr3+ luminescence in near stoichiometric LiNbO3 crystals codoped with MgO
Author/Authors
T.P.J. Han، نويسنده , , F. Jaque، نويسنده , , L. Arizmendi، نويسنده , , V. Bermudez، نويسنده , , A. Suchocki، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2004
Pages
4
From page
55
To page
58
Abstract
The emission intensity of the R-line of Cr3+ ions in near stoichiometric LiNbO3crystals codoped with MgO has been studied at a low temperature under excitation of the 4A2→4T1 transition. The R-line emission intensity associated with Cr3+ ions in the Nb5+ site, [Cr]Nb centre, was observed to decrease with the illumination time whereas the Cr3+ ions located in the Li site, [Cr]Li centres, are optically stable. This selective bleaching is explained by considering the photoionization of Cr3+ ions in Nb5+ sites and the formation of Nb4+.
Keywords
Cr3+ , Stoichiometric LiNbO3 , Spectroscopy , MGO
Journal title
Journal of Luminescence
Serial Year
2004
Journal title
Journal of Luminescence
Record number
1259305
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