论文标题
询问用高电离子的EUV频率梳子的时间连贯性
Interrogating the temporal coherence of EUV frequency combs with highly charged ions
论文作者
论文摘要
提出了一种推断由腔内高阶谐波产生的EUV频率梳子的时间相干性的方案。模拟了与具有不同载体 - eNVELOPE相相波动的EUV脉冲列车相互作用的高电荷Mg样离子的激发动力学。在证明脉冲列和连续波激光器引起的激发之间的宏观等效性的显微镜起源时，我们表明脉冲序列的相干时间可以从激发光谱中确定。该方案将在时间尺度上提供比当前状态更长几个数量级的梳子时间连贯性的验证，同时将实现EUV过渡的高精度光谱，相对精度高达$ΔΩ/ω/ω/ω\ sim10^{ - 17} $。
A scheme to infer the temporal coherence of EUV frequency combs generated from intra-cavity high-order harmonic generation is put forward. The excitation dynamics of highly charged Mg-like ions, interacting with EUV pulse trains featuring different carrier-envelope-phase fluctuations, are simulated. While demonstrating the microscopic origin of the macroscopic equivalence between excitations induced by pulse trains and continuous-wave lasers, we show that the coherence time of the pulse train can be determined from the spectrum of the excitations. The scheme will provide a verification of the comb temporal coherence at time scales several orders of magnitude longer than current state of the art, and at the same time will enable high-precision spectroscopy of EUV transitions with a relative accuracy up to $δω/ω\sim10^{-17}$.
