Ultrafast fiber lasers exhibit high broadband gain per pass, superior thermo-optical properties, and excellent beam quality, making them very suitable for practical use. For simplicity and efficiency, advanced mode-locked oscillator designs which can compete with the amplifier systems are always favorable. Here, we demonstrate a high-peak-power Mamyshev oscillator based on single-polarization, large-mode-area photonic crystal fibers. Using properly arranged filters, the fiber oscillator directly emits pulses with 9 W average power at 8 MHz repetition rate, corresponding to a single-pulse energy exceeding 1 μJ. The pulses are dechirped to 41 fs outside the cavity, leading to a record oscillator peak power as high as 13 MW. With such unprecedented performance, the proposed single-stage oscillator should be very attractive for various applications.

中文翻译：

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飞秒Mamyshev振荡器，峰值功率为10 MW

超快光纤激光器具有很高的单程宽带增益，出色的热光特性和出色的光束质量，使其非常适合实际使用。为了简单和高效，可以与放大器系统竞争的先进锁模振荡器设计始终是首选。在这里，我们演示了一种基于单偏振，大模式面积光子晶体光纤的高峰值功率Mamyshev振荡器。使用正确布置的滤波器，光纤振荡器会以8 MHz的重复频率直接发射平均功率为9 W的脉冲，对应于超过1μJ的单脉冲能量。在腔外将脉冲降低至41 fs，导致创纪录的振荡器峰值功率高达13 MW。由于具有如此空前的性能，因此所提出的单级振荡器对于各种应用应该具有很大的吸引力。