掺镱离子铌酸锂单晶的生长及光谱特征  

Growth and Spectral Characterization of Yb∶LiNbO_3 Crystal

作　　者：臧竞存[1] 迟静[1] 邹玉林[1] 刘燕行[2] 田占魁 

机构地区：[1]北京工业大学材料科学与工程学院,北京100022 [2]北京工业大学环境与能源工程学院,北京100022

出　　处：《中国稀土学报》2005年第S2期5-7,共3页Journal of the Chinese Society of Rare Earths

摘　　要：应用Czochralski技术生长了掺杂浓度为1%(摩尔分数)的Yb∶LiNbO3晶体,研究了室温下Yb∶LiNbO3晶体的偏振吸收光谱和荧光光谱,分析了Yb3+离子在LiNbO3晶体中的能级分裂情况和各子能级的属性,计算出其吸收截面:980 nm为2.85×10~20cm2(π)和1.98×10-20cm2(σ);发射截面:1030 nm为0.58×10-20cm2(σ),1006 nm为1.69×10-20cm2(π),并对实现激光自倍频进行了讨论。Yb∶LiNbO_3 crystal doped with 1% Yb^(3+)(mole fraction) was grown by Czochralski method.The absorption and emission spectra were studied.The character of the Stark sublevels for Yb^(3+) ions in LiNbO_3 crystal was determined.The absorption and emission cross section of different wavelength were defined as follows: σ_(abs) in 980 nm are 2.85×10^(-20) cm^2(π) and 1.98×10^(-20) cm^2(σ);σ_(em) in 1030 nm is 0.58×10^(-20) cm^2(σ),1006 nm is 1.69×10^(-20) cm^2(π).

关 键 词：Yb∶LiNbO3晶体 晶体生长 光谱特性 稀土 

分 类 号：O782[理学—晶体学]