Rothhardt Jan, Hädrich Steffen, Klenke Arno, Demmler Stefan, Hoffmann Armin, Gotschall Thomas, Eidam Tino, Krebs Manuel, Limpert Jens, Tünnermann Andreas
Opt Lett. 2014 Sep 1;39(17):5224-7. doi: 10.1364/OL.39.005224.
We report on a few-cycle laser system delivering sub-8-fs pulses with 353 μJ pulse energy and 25 GW of peak power at up to 150 kHz repetition rate. The corresponding average output power is as high as 53 W, which represents the highest average power obtained from any few-cycle laser architecture so far. The combination of both high average and high peak power provides unique opportunities for applications. We demonstrate high harmonic generation up to the water window and record-high photon flux in the soft x-ray spectral region. This tabletop source of high-photon flux soft x rays will, for example, enable coherent diffractive imaging with sub-10-nm resolution in the near future.
我们报道了一种几周期激光系统，该系统能产生脉宽小于8飞秒的脉冲，脉冲能量为353微焦，峰值功率为25吉瓦，重复频率高达150千赫兹。相应的平均输出功率高达53瓦，这是迄今为止从任何几周期激光架构中获得的最高平均功率。高平均功率和高峰值功率的结合为应用提供了独特的机会。我们展示了高达水窗的高次谐波产生，并在软X射线光谱区域记录到了创纪录的高光子通量。例如，这种桌面型高光子通量软X射线源将在不久的将来实现分辨率低于10纳米的相干衍射成像。
