高重复率窄脉宽Nd∶YVO_4板条激光器

部分端面抽运的混合腔板条激光器是一种新型的全固态激光器,采用这种结构,实现了高重复率调Q运转。在脉冲抽运情况下,1kHz运转时,得到脉宽4.6ns,单脉冲能量4.5mJ的激光输出。在连续抽运调Q输出情况下,5kHz高重复率运转时,获得了脉宽6ns,单脉冲能量3.1mJ的脉冲序列输出,平均功率超过15W;当重复率高达25kHz时,得到脉宽9.5ns,单脉冲能量1.2mJ的激光输出,平均功率达30W。实验结果表明,输出水平还有很大的提升空间。

Partially end-pumped hybrid resonator slab laser is one kind of novel solid-state laser. High repetition rate Q-switched operation using this structure was achieved. An output pulse train with 4.6 ns pulse width and 4.5 mJ pulse energy was obtained at 1 kHz repetition rate. In the condition of continuous pumping with 5 kHz operation, Q-switched laser with pulse width of 6 ns and pulse energy of 3.1 mJ was obtained, and output power was more than 15W. The width and energy were 9.5 ns and 1.2 mJ respectively when the repetition rate reached 25 kHz, and output power was 30W. Experimental results show that the output level has great potential for further development.