摘要
用提拉法生长了质量优良的大尺寸Yb :YAG晶体 ,在室温下测量了它的 2 0 0～ 30 0 0nm的吸收光谱。在 2 0 0～ 390nm范围内 ,晶体的吸收来自基质YAG ;在 390～ 30 0 0nm范围内 ,仅有Yb3 + 的特征吸收。Judd Ofelt理论计算的结果表明 ,(2 4at% )Yb :YAG的电偶极子的吸收、发射振子强度分别为 3 5 8× 10 -6,4 77× 10 -6,吸收、发射跃迁几率分别为每秒 879,1171。磁偶极子的吸收、发射振子强度分别为 3 32×10 -7,4 4 3× 10 -7,吸收、发射跃迁几率分别为每秒 82 ,10 9;2 F5/ 2 能级寿命为 781μs。
In this article, a good-quality crystal Yb:.YAG was grown by pull method, and its absorption spectrum of 200-3 000 nm. was measured at room temperature. Its absorption of 200-300 nm is from the host YAG, and there exists only the characteristic absorption of Yb3+ in the range of 390-3 000 nm. Judd-Ofelt theory computation indicates that the absorption and emission oscillator strengths of electric dipole of (24 at%) Yb: YAG are 3.58 X 10(-6) and 4.77 X 10(-6), respectively, and the absorption and emission transition probabilities are 879 and 1 171/s respectively. As for magnetic dipole, the absorption and emission oscillator strengths are 3.32 X 10(-7) and 4.43 x 10(-7) respectively, and the absorption and emission transition probabilities are 82 and 109/s respectively. The lifetime of the energy level F-2(5/2) is 781 mus.
出处
《光谱学与光谱分析》
SCIE
EI
CAS
CSCD
北大核心
2004年第10期1157-1160,共4页
Spectroscopy and Spectral Analysis
基金
安徽省自然科学基金 (0 1 0 4 2 4 0 3)资助项目
