Opt Lett. 2013 Nov 15;38(22):4716-8. doi: 10.1364/OL.38.004716.
Based on our reliable high-power picosecond laser source with high beam qualities, we designed a compact and efficient third harmonic generation scheme by cascading a frequency doubling and a sum frequency generation using LBO as the nonlinear material. A maximum output of 39.1 W with a repeat rate of 1 MHz at 355 nm was obtained, which implied a pulse energy of 39.1 μJ, which was the highest picosecond UV pulse energy with an all-solid-state setup so far. The total conversion efficiency from infrared to UV was up to 46%. And the output UV has excellent beam qualities with an M-square factor less than 1.1.
基于我们可靠的高功率皮秒激光源和高质量光束，我们设计了一种紧凑高效的三次谐波产生方案，通过级联倍频和和频产生，使用 LBO 作为非线性材料。在 355nm 处获得了重复率为 1MHz 的最大输出功率 39.1W，这意味着脉冲能量为 39.1μJ，这是迄今为止使用全固态装置获得的最高皮秒紫外脉冲能量。从红外到紫外的总转换效率高达 46%。并且输出的紫外光具有极好的光束质量，M 平方因子小于 1.1。
