We report a 589-nm laser using the sum-frequency generation (SFG) of 1.158- and 1.197-μm Stokes Raman lasers. These Stokes lasers are based on two KGd(WO4)2 and Ba(NO3)2 external Raman laser oscillators. First, a high-energy 1064-nm source was built to pump stimulated Raman scattering. Multiorder Stokes lasers with pulse energies of 402 and 220 mJ were generated from Raman laser oscillators with 2.26-J pumping. Furthermore, these two Stokes beams were simultaneously delivered into a potassium dihydrogen phosphate crystal for SFG. Finally, a 31.7-mJ laser at 589 nm was achieved with pulse duration of 6.9 ns and repetition rate of 1 Hz. These experimental results provide practical alternative to generate high-energy short-pulse 589-nm laser beams for related applications.

中文翻译：

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使用斯托克斯拉曼激光器的总频率产生全固态589 nm脉冲

我们报告了使用1.158和1.197μm斯托克斯拉曼激光器的总和频率生成（SFG）的589 nm激光器。这些Stokes激光器基于两个KGd（WO4）2和Ba（NO3）2外部拉曼激光振荡器。首先，建立了一个高能量1064 nm的光源来泵浦受激拉曼散射。脉冲能量为402和220 mJ的多阶斯托克斯激光器是由具有2.26-J抽运的拉曼激光振荡器产生的。此外，这两个斯托克斯束同时传送到用于SFG的磷酸二氢钾晶体中。最后，在6.9 ns的脉冲持续时间和1 Hz的重复频率下获得了31.7-mJ的589 nm激光。这些实验结果为生成用于相关应用的高能短脉冲589 nm激光束提供了实用的选择。