1kHz高倍率亚纳秒全固态激光放大器研究

高功率全固态亚纳秒激光器具有体积小、成本低、线宽窄、峰值功率高等优势,在诸多领域具有重要的应用价值。为获得高功率亚纳秒激光输出,首先通过被动调Q激光器得到亚纳秒种子激光,然后利用LD侧泵模块,采用双模块双通放大的实验设计,在重复频率为1 kHz时,获得了平均功率达10 W,脉冲宽度816 ps,线宽39 pm,光束质量M2小于1.8的激光输出,放大器整体放大倍率达95倍以上。

Research on 1 kHz high-power sub-nanosecond all-solid-state laser amplifier

High-power all-solid-state sub-nanosecond lasers have the advantages of small size, low cost, narrow line width and high peak power. They have important application value in many fields. In order to obtain high-power sub-nanosecond laser output, a sub-nanosecond seed laser was first obtained through a passive Q-switched laser, and then an LD side pump module was used to design a dual-module dual-pass amplification experiment. At a repetition rate of 1 kHz, a laser output with an average power of 10 W, a pulse width of 816 ps, a line width of 39 pm, and a beam quality M2 of less than 1.8 was obtained. The overall magnification the amplifier was over 95 times.