论文标题
朝着attosenwave包的完整阶段分析
Towards the complete phase profiling of attosecond wave packets
论文作者
论文摘要
逼真的Attosond Wave包具有复杂的轮廓，在分散条件下，迅速扩展或分为多个组件。此类行为以波数据包光谱阶段的尖锐特征进行编码。在这里，我们利用在Attosement光电离实验中单光和两光子过渡之间的量子跳动，以连续测量光电相光相跨广泛的能量范围。在数值模拟的支持下，我们证明了这种实验技术能够重建光谱阶段的尖锐细尺度特征，它是能量的函数以及在脉冲序列的整个光谱范围内的函数，因此超出了现有的AttoSecond光谱镜的功能。在原理证明实验中，我们由于每个谐波的单个chiRP而检索了Attosecond脉冲序列的光谱阶段的周期性调制。
Realistic attosecond wave packets have complex profiles that, in dispersive conditions, rapidly broaden or split into multiple components. Such behaviors are encoded in sharp features of the wave packet spectral phase. Here, we exploit the quantum beating between one- and two-photon transitions in an attosecond photoionization experiment to measure the photoelectron spectral phase continuously across a broad energy range. Supported by numerical simulations, we demonstrate that this experimental technique is able to reconstruct sharp fine-scale features of the spectral phase, continuously as a function of energy and across the full spectral range of the pulse train, thus beyond the capabilities of existing attosecond spectroscopies. In a proof-of-principle experiment, we retrieve the periodic modulations of the spectral phase of an attosecond pulse train due to the individual chirp of each harmonic.
