二极管泵浦Yb∶YAG准三能级1024nm薄盘激光器

Diode-pumped Yb∶ YAG quasi-three level thin-disk laser with 1024nm output

采用二极管泵浦Yb∶YAG晶体实现准三能级连续1024 nm薄盘激光器,1024 nm谱线是由Yb∶YAG晶体内的2F5/2-2F7/2能级跃迁实现的,实验中采用折叠腔结构。泵浦光16次通过Yb∶YAG晶体,当注入泵浦功率为17.9 W时,1024 nm激光输出功率为370 mW,通过采用I类临界位相匹配LiB3O5(LBO)晶体进行腔内二次谐波倍频,获得最大输出功率为45 mW的512 nm蓝-绿激光稳定输出,蓝-绿色激光30 min功率稳定度优于4.3%。

For the first time ,we present a quasithreelevel Yb：YAG laser operating in continuous wave（CW） mode. It is based on the ^2F^5/2 ^- 2F^7/,2 transmon and outputs 1024 nm wavelength. The use of a pump module with 16 light passes through the crystal allows the realization of a folded cavity Yb：YAG thindisk laser with 370 mW output power at 1024 nm when the pump power is 32.2 W. Moreover,intracavity secondharmonic generation（SHG） has also been achieved with a power of 45 mW at 512 nm by using a LiB305 （LBO） nonlinear crystal. The power stability in 30 minutes is better than ± 4.3 %.