We demonstrate an efficient 102-MW peak power, 103-W average power, Kerr-lens mode-locked thin-disk laser (TDL) oscillator generating 52-fs pulses at 17.1-MHz repetition rate. The TDL is based on an Yb:YAG disk and operates in the strongly self-phase-modulation (SPM) broadened regime. In this regime, the spectral bandwidth of the oscillating pulse exceeds the available gain bandwidth by generating additional frequency components via SPM in the Kerr medium inside the laser cavity. At an optical-to-optical efficiency of 26%, our oscillator delivers a more than six times higher average power compared to any 50-fs-class laser oscillator. Compared to previous 100-W-class high-power laser oscillators, we reach this performance in a more than two times shorter pulse duration at a comparable optical-to-optical efficiency. Our TDL delivers the highest peak power of any ultrafast laser oscillator. The short pulse duration combined with high average power and peak power makes the presented TDL oscillator an attractive source for high field science and nonlinear optics.

中文翻译：

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高效的 100-MW、100-W、50-fs 级 Yb:YAG 薄盘激光振荡器

我们展示了一种高效的 102-MW 峰值功率、103-W 平均功率、克尔透镜锁模薄盘激光器 (TDL) 振荡器，可在 17.1-MHz 重复率下产生 52-fs 脉冲。TDL 基于 Yb:YAG 圆盘并在强自相位调制 (SPM) 加宽范围内运行。在这种情况下，通过在激光腔内的克尔介质中通过 SPM 产生额外的频率分量，振荡脉冲的光谱带宽超过了可用的增益带宽。与任何 50-fs 级激光振荡器相比，我们的振荡器的光对光效率为 26%，平均功率高出六倍以上。与之前的 100 W 级高功率激光振荡器相比，我们以可比的光对光效率在更短的两倍以上的脉冲持续时间内实现了这种性能。我们的 TDL 可提供任何超快激光振荡器的最高峰值功率。短脉冲持续时间与高平均功率和峰值功率相结合，使所提出的 TDL 振荡器成为高场科学和非线性光学的有吸引力的来源。