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La2O3对Yb:Y2O3透明陶瓷光谱性能的影响
引用本文:杨秋红,徐 军,豆传国,张红伟,丁 君,唐在峰. La2O3对Yb:Y2O3透明陶瓷光谱性能的影响[J]. 物理学报, 2007, 56(7): 3961-3965
作者姓名:杨秋红  徐 军  豆传国  张红伟  丁 君  唐在峰
作者单位:(1)上海大学材料科学与工程学院,上海 200072; (2)中国科学院上海光学精密机械研究所,上海 201800
基金项目:国家自然科学基金(批准号:60578041)资助的课题.
摘    要:研究了La2O3对Yb:Y2O3透明陶瓷光谱性能的影响,添加适量La2O3以后,Yb:Y2O3透明陶瓷的吸收峰和发射峰的位置不变,但由于La3+的离子半径大于Y3+的离子半径,在Y2O3中引入La3+离子后,导致Y2O3晶格常数变大,晶场强度变弱,同时降低了Y2O3晶体的有序度,致使发射峰强度有所下降,发射截面变小.过量的La2O3x=0.16)造成Yb3+激活离子发射强度明显下降;其荧光寿命在添加La2O3后总体增大45%—60%.关键词:氧化镧氧化钇透明陶瓷光谱性能

关 键 词:氧化镧  氧化钇  透明陶瓷  光谱性能
文章编号:1000-3290/2007/56(07)/3961-05
收稿时间:2006-09-13
修稿时间:2006-09-13

Effect of La2O3 doping on the spectroscopic properties of transparent Yb:Y2O3 laser ceramics
Yang Qiu-Hong,Xu Jun,Dou Chuan-Guo,Zhang Hong-Wei,Ding Jun and Tang Zai-Feng. Effect of La2O3 doping on the spectroscopic properties of transparent Yb:Y2O3 laser ceramics[J]. Acta Physica Sinica, 2007, 56(7): 3961-3965
Authors:Yang Qiu-Hong  Xu Jun  Dou Chuan-Guo  Zhang Hong-Wei  Ding Jun  Tang Zai-Feng
Affiliation:School of Materials Science and Engineering, Shanghai University, Shanghai 200072, ChIna ; Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
Abstract:The effect of La2O3 doping on the spectroscopic properties of transparent Yb:Y2O3 ceramics was studied. After doping La2O3,the shapes and positions of the absorption and emission peaks of transparent (Yb0.05Y0.95-xLax)2O3 ceramics were almost the same as those of Yb:Y2O3. When La2O3 was added into Yb:Y2O3,the 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.
Keywords:lanthanum oxide  yttrium oxide  transparent ceramics  spectroscopic property
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