TY - JOUR
T1 - Optical bleaching of Cr3+ luminescence in near stoichiometric LiNbO3 crystals codoped with MgO
AU - Han, T.P.J.
AU - Jaque, F.
AU - Arizmendi, L.
AU - Bermudez, V.
AU - Suchocki, A.
PY - 2004/6
Y1 - 2004/6
N2 - 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:
AB - 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:
KW - stoichiometric LiNbO3
KW - spectroscopy
KW - MgO
KW - Cr3þ
KW - nanoscience
UR - http://www.sciencedirect.com/science/journal/00222313
UR - http://dx.doi.org/10.1016/j.jlumin.2004.01.010
U2 - 10.1016/j.jlumin.2004.01.010
DO - 10.1016/j.jlumin.2004.01.010
M3 - Article
SN - 0022-2313
VL - 108
SP - 55
EP - 58
JO - Journal of Luminescence
JF - Journal of Luminescence
ER -