摘要
测量了温梯法生长的Yb:YAG晶体的吸收光谱、荧光光谱和荧光寿命,比较了氧化和还原气氛退火对其影响。晶体主吸收峰938 nm和967 nm处的吸收截面分别为0.74×10-20cm2和0.36×10-20cm2。通过光谱分析,没有发现Yb:YAG晶体中Yb2+离子的存在。发现晶体边缘位置处不同的紫外吸收。
The absorption spectra, luminescence spectra and fluorescence lifetime of Yb:YAG crystal grown by TGT were measured and the effect of annealing at oxidation and reduction atmosphere was studied. The absorption cross sections of main spectra 938 nm and 967 nm are 0.74×10-20cm2 and 0.36×10-20cm2. Yb2+ ions were not found in the Yb:YAG crystal by analysis of spectra. Different UV absorption spectra near the fringe of as-grown crystal were found.
出处
《量子电子学报》
CAS
CSCD
北大核心
2004年第1期18-22,共5页
Chinese Journal of Quantum Electronics
基金
国家高技术研究发展计划(863)资助项目(2002AA311030)
关键词
温梯法
YB:YAG晶体
吸收光谱
荧光光谱
荧光寿命
laser techniques
Yb:YAG crystal
temperature gradient technique(TGT)
absorp- tion properties
fluorescence lifetime
