Max-Planck-Institut für Quantenoptik,Garching, Germany.
Opt Lett. 2011 Sep 1;36(17):3428-30. doi: 10.1364/OL.36.003428.
We report on single-pass high-harmonic generation (HHG) with amplified driving laser pulses at a repetition rate of 20.8 MHz. An Yb:YAG Innoslab amplifier system provides 35 fs pulses with 20 W average power at 1030 nm after external pulse compression. Following tight focusing into a xenon gas jet, we observe the generation of high-harmonic radiation of up to the seventeenth order. Our results show that state-of-the-art amplifier systems have become a promising alternative to cavity-assisted HHG for applications that require high repetition rates, such as frequency comb spectroscopy in the extreme UV.
我们报告了在重复率为 20.8 MHz 的情况下，单次通过的高次谐波产生（HHG）与放大驱动激光脉冲。在外部脉冲压缩后，Yb:YAG Innoslab 放大器系统在 1030nm 处提供 35fs 脉冲，平均功率为 20W。紧聚焦到氙气射流后，我们观察到高达第十七阶的高次谐波辐射的产生。我们的结果表明，对于需要高重复率的应用，如极紫外频率梳光谱学，最先进的放大器系统已经成为腔辅助 HHG 的有前途的替代方案。
