Opt Lett. 2023 Jun 1;48(11):3031-3034. doi: 10.1364/OL.492992.
Ultrafast ring-cavity thin-disk oscillators combine high output power with the flexibility of generating output either unidirectionally or bidirectionally. Here, we report a Kerr-lens mode-locked ring-cavity Yb:YAG thin-disk oscillator delivering unidirectional 89-fs pulses by inducing additional spectral broadening with nonlinear plates. This is the shortest pulse duration for a ring-cavity mode-locked thin-disk oscillator. Bidirectional mode-locking was also realized. These results lay the foundation for the more efficient generation of high-order harmonics at MHz repetition rates and high-power dual frequency combs.
超快速环形腔薄圆盘振荡器将高输出功率与产生单向或双向输出的灵活性相结合。在这里，我们报告了一种 Kerr 透镜锁模环形腔 Yb:YAG 薄圆盘振荡器，通过使用非线性板诱导额外的光谱展宽，实现了单向 89fs 脉冲。这是环形腔锁模薄圆盘振荡器最短的脉冲持续时间。双向锁模也得以实现。这些结果为在 MHz 重复率和高功率双频梳中更有效地产生高阶谐波奠定了基础。
