Open AccessEffect of La2O3 doping on the spectroscopic properties of transparent Yb:Y2O3 laser ceramics
Author(s) -
Qiuhong Yang,
Jun Xu,
Dou Chuan-Guo,
Hongwei Zhang,
Jun Ding,
Tang Zai-Feng
Publication year - 2007
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.56.3961
Subject(s) - doping , materials science , ceramic , analytical chemistry (journal) , ion , fluorescence , optics , physics , optoelectronics , chemistry , composite material , chromatography , quantum mechanics
The effect of La2O3 doping on the spectroscopic properties of transparent YbY2O3 ceramics was studied. After doping La2O3the shapes and positions of the absorption and emission peaks of transparent (Yb0.05Y0.95-xLax)2O3 ceramics were almost the same as those of YbY2O3. When La2O3 was added into YbY2O3the lattice constant of (Yb0.05Y0.95-xLax)2O3 became large and the crystal field strength weaker due to introducing of larger radius of La3+ ion, simultaneously its degree of order is decreased, which results in the decrease of the emission intensities and the emission cross-sections. The emission intensities were reduced greatly for the excessive doping of La2O3 (16at%) in (Yb0.05Y0.95-xLax)2O3 ceramics. On the whole the fluorescent lifetimes of the samples are increased by 45%—60% after doping La2O3.