摘要
测量了高掺杂浓度Nd∶YAG晶体的吸收光谱和荧光寿命。晶体的主吸收峰在 80 8nm处 ,Nd掺杂的摩尔分数为 0 0 30的Nd∶YAG晶体的吸收系数高达 2 0 7cm-1,荧光寿命为 15 0 μs,存在浓度猝灭。进行了钛宝石激光抽运高掺杂浓度Nd∶YAG和Nd∶YVO4 晶体的激光性能对比实验 ,所用Nd∶YAG晶体摩尔分数为 0 0 2 0和 0 0 2 5 ,激光斜率效率分别为 2 9 7%和 32 % ;Nd∶YVO4 晶体摩尔分数为 0 0 30 ,激光斜率效率为 34 7% ,表明了高浓度Nd∶YAG晶体在激光性能上与高浓度的Nd∶YVO4
The absorption spectra and fluorescence lifetime of high quality and highly doped Nd∶YAG crystals, grown by the temperature gradient technique in our laboratory were measured. The main absorption peak of Nd∶YAG crystal was 808 nm. The absorption coefficient of Nd∶YAG crystal with 0.030 mole fraction of Nd ion concentration was up to 20.7 cm -1 . The fluorescence lifetime was found to be 150 μs, and concentration quenching was shown. The laser characteristics comparative experiments of highly doped Nd∶YAG and Nd∶YVO 4 crystals pumped by a Ti∶sapphire laser were demonstrated. The mole fractions of concentration of Nd doped YAG crystals were 0.020 and 0.025, and the laser slope efficiency was 29.7% and 32% respectively. The mole fraction of concentraction of Nd doped YVO 4 was 0.030, and its laser slope efficiency was 34.7%. It suggested that high doped Nd∶YAG crystal was comparable in laser characteristics to high doped Nd∶YVO 4 crystal.
出处
《光学学报》
EI
CAS
CSCD
北大核心
2001年第10期1264-1267,共4页
Acta Optica Sinica
基金
中国科学院重大课题
86 3 715新材料领域课题资助项目
