Tsai Chia-Lun, Meyer Frank, Omar Alan, Wang Yicheng, Liang An-Yuan, Lu Chih-Hsuan, Hoffmann Martin, Yang Shang-Da, Saraceno Clara J
Opt Lett. 2019 Sep 1;44(17):4115-4118. doi: 10.1364/OL.44.004115.
We demonstrate efficient pulse compression of a 13.4 MHz, 534 fs, 123 W, Yb:YAG thin-disk oscillator down to 27 fs at 98 W average power, resulting in a record-high 166 MW peak power from an amplifier-free oscillator-driven setup. Our compressor is based on two stages: one multipass cell allowing us to reduce the pulse duration to sub-90 fs and, subsequently, a multiple-plate compressor, allowing us to reach 27 fs. The overall average power compression efficiency is 80%, and the beam has excellent beam quality and homogeneity. In addition, we demonstrate further spectral broadening that supports a transform limit of 5 fs in a second multiple-plate stage, demonstrating the potential for reaching a 100 W class, amplifier-free, few-cycle source in the near future. The performance of this unique source is very promising for applications previously restricted to amplified sources, such as efficient generation of extreme ultraviolet light at high repetition rate, and the generation of high-power broadband THz radiation.
我们展示了对一个13.4兆赫兹、534飞秒、123瓦的镱：钇铝石榴石薄盘振荡器进行高效脉冲压缩，在平均功率98瓦时将其压缩至27飞秒，从而在无放大器振荡器驱动装置中实现了创纪录的166兆瓦峰值功率。我们的压缩器基于两个阶段：一个多程腔使我们能够将脉冲持续时间缩短至90飞秒以下，随后是一个多片式压缩器，使我们能够达到27飞秒。总体平均功率压缩效率为80%，并且光束具有优异的光束质量和均匀性。此外，我们展示了进一步的光谱展宽，在第二个多片式阶段支持5飞秒的变换极限，这表明在不久的将来有潜力实现100瓦级、无放大器、少周期光源。这种独特光源的性能对于以前仅限于放大光源的应用非常有前景，例如以高重复率高效产生极紫外光以及产生高功率宽带太赫兹辐射。
