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Optical bleaching of Cr3+ luminescence in near stoichiometric LiNbO3 crystals codoped with MgO

Han, T.P.J. and Jaque, F. and Arizmendi, L. and Bermudez, V. and Suchocki, A. (2004) Optical bleaching of Cr3+ luminescence in near stoichiometric LiNbO3 crystals codoped with MgO. Journal of Luminescence, 108. pp. 55-58. ISSN 0022-2313

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Abstract

The emission intensity of the R-line of Cr3þ 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 Cr3þ ions in the Nb5þ site, ½CrNb centre, was observed to decrease with the illumination time whereas the Cr3þ ions located in the Li site, ½CrLi centres, are optically stable. This selective bleaching is explained by considering the photoionization of Cr3þ ions in Nb5þ sites and the formation of Nb4þ:

Item type: Article
ID code: 2941
Keywords: stoichiometric LiNbO3, spectroscopy, MgO, Cr3þ, nanoscience, Solid state physics. Nanoscience, Biochemistry, Biophysics, Atomic and Molecular Physics, and Optics, Chemistry(all), Condensed Matter Physics
Subjects: Science > Physics > Solid state physics. Nanoscience
Department: Faculty of Science > Physics
Related URLs:
Depositing user: Strathprints Administrator
Date Deposited: 22 Feb 2007
Last modified: 04 Sep 2014 12:41
URI: http://strathprints.strath.ac.uk/id/eprint/2941

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