Herein, a high-power picosecond laser system based on master oscillator power amplifier structure is demonstrated. The seed source is a SESAM mode-locked fiber oscillator; the pulse repetition frequency is selected by an acoustic optical modulator with a tunable range from 100 kHz to 4.27 MHz. The amplification system includes one fiber amplifier stage, four stages of end-pumped Nd:YVO₄ amplifiers, and two stages of side-pumped Nd:YAG amplifiers. Finally, the average output power of >300 W is achieved. The maximum peak power is 86.6 MW at 300 kHz with a pulse energy of ∼700 μJ and a pulse duration of ∼8.08 ps.

中文翻译：

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基于 Nd:YVO4 和 Nd:YAG 棒状放大器的 310 W 皮秒激光器

在此，展示了一种基于主振荡器功率放大器结构的高功率皮秒激光系统。种子源是一个 SESAM 锁模光纤振荡器；脉冲重复频率由声光调制器选择，可调范围为 100 kHz 至 4.27 MHz。放大系统包括一级光纤放大器、四级端泵Nd:YVO ₄放大器和两级侧泵Nd:YAG放大器。最后，实现了 >300 W 的平均输出功率。最大峰值功率在 300 kHz 时为 86.6 MW，脉冲能量为~700 μJ，脉冲持续时间为~8.08 ps。