NSF Engineering Research Center for Extreme Ultraviolet Science and Technology, Fort Collins, Colorado 80523, USA.
Opt Lett. 2012 Sep 1;37(17):3624-6. doi: 10.1364/OL.37.003624.
We demonstrate the operation of a gain-saturated table-top soft x-ray laser at 100 Hz repetition rate. The laser generates an average power of 0.15 mW at λ=18.9 nm, the highest laser power reported to date from a sub-20-nm wavelength compact source. Picosecond laser pulses of 1.5 μJ energy were produced at λ=18.9 nm by amplification in a Mo plasma created by tailoring the temporal intensity profile of single pump pulses with 1 J energy produced by a diode-pumped chirped pulse amplification Yb:YAG laser. Lasing was also obtained in the 13.9 nm line of Ni-like Ag. These results increase by an order of magnitude the repetition rate of plasma-based soft x-ray lasers opening the path to milliwatt average power table-top lasers at sub-20 nm wavelengths.
我们展示了一种工作在 100 Hz 重复率的增益饱和台式软 X 射线激光器。该激光器在 λ=18.9nm 处产生 0.15mW 的平均功率，这是迄今为止从紧凑型亚 20nm 波长源获得的最高激光功率。通过使用二极管泵浦啁啾脉冲放大 Yb:YAG 激光产生的 1J 能量的单脉冲，对激光进行时间强度整形，在 λ=18.9nm 处产生了 1.5μJ 能量的皮秒激光脉冲。在类镍银的 13.9nm 谱线中也获得了激光。这些结果将基于等离子体的软 X 射线激光器的重复率提高了一个数量级，为亚 20nm 波长的毫瓦平均功率台式激光器开辟了道路。
