高温H_2退火对Yb∶YAG晶体光谱性能的影响  

Influence of H_2-annealing on Spectroscopy Performances of Yb^(3+) doped YAG Crystals

作　　者：徐晓东[1] 赵志伟[1] 宋平新[1] 邓佩珍[1] 司继良[1] 周国清[1] 徐军[1] 

机构地区：[1]中国科学院上海光学精密机械研究所,上海201800

出　　处：《中国激光》2003年第8期709-712,共4页Chinese Journal of Lasers

基　　金：国家高技术研究发展计划 (86 3)资助项目 (2 0 0 2AA31 1 0 30 )

摘　　要：研究了不同掺杂浓度的Yb∶YAG晶体氢气退火前后的色心吸收 ,发现随着Yb2 O3 浓度的增加 ,色心浓度并不增加。测量了退火前后不同浓度晶体的荧光光谱和荧光寿命 ,指出低浓度掺杂时 ,色心对发光强度和荧光寿命没有猝灭作用 ,只有在掺杂浓度大于 1 0at. %时 。The color center absorption properties of as-grown and H2-annealing Yb:YAG with different Yb3+ doped concentration have been studied, and its concentration is not consistent with doping concentration of Yb2O3. The fluorescence spectra and fluorescence lifetime of Yb:YAG are measured. It is only when the doped concentration more than 10 at.-% that the color center has a evident quenching effect on fluorescence intensity and fluorescence lifetime of Yb:YAG.

关 键 词：人工晶体 YB:YAG晶体 色心 荧光寿命 浓度猝灭 

分 类 号：TN244[电子电信—物理电子学] O433.5[机械工程—光学工程]