AI 中文总结
该研究在实验上利用频域形成戈隆尺的五分量光谱整形多色红外探测场实现激光辅助光电子干涉测量，揭示了多色探测场对量子拍的畸变效应，为多色光电子干涉测量的定量解读及阿秒科学发展提供支撑。
AI 中文摘要
激光辅助光电子干涉测量是阿秒科学的基石，最初用于表征阿秒脉冲序列，后续被用于研究光电离动力学。将该方法扩展至光谱整形多色红外探测场，可在光电子谱内的多条干涉路径中编码信息。本文实验演示了采用由五个不同光谱分量构成、在频域形成戈隆尺（Golomb ruler）的光谱整形多色红外探测场的激光辅助光电子干涉测量。测得的干涉图样呈现多个拍频，与理论计算结果相符，证明单次测量可同时编码多个激光辅助量子拍。对拍振幅的定量分析显示，多色探测场的强调制时间轮廓会引入依赖强度和延迟的量子拍畸变，该畸变无法用二阶微扰理论解释。这些结果确立了多色光电子干涉测量定量解读所需的条件，并凸显了探测场的光谱-时间工程为阿秒科学未来发展提供的机遇。
英文摘要
Laser-assisted photoelectron interferometry is a cornerstone of attosecond science, first used to characterize attosecond pulse trains and later to study photoionization dynamics. Extending this method to spectrally shaped polychromatic infrared probe fields enables encoding of information across multiple interferometric pathways within the photoelectron spectrum. Here, we experimentally demonstrate laser-assisted photoelectron interferometry using a spectrally shaped polychromatic infrared probe field composed of five distinct spectral components forming a Golomb ruler in the frequency domain. The measured interferograms exhibit multiple beating frequencies that agree with theoretical calculations, demonstrating the simultaneous encoding of multiple laser-assisted quantum beats in a single measurement. A quantitative analysis of the beating amplitudes shows that the strongly modulated temporal profile of the polychromatic probe introduces intensity- and delay-dependent distortions of the quantum beats that cannot be explained by second-order perturbation theory. These results establish the conditions required for the quantitative interpretation of polychromatic photoelectron interferometry and highlight the opportunities offered by spectro-temporal engineering of the probe field for future developments in attosecond science.
Comments11 pages, 7 figures. Submitted to Journal of Physics B: Atomic, Molecular and Optical Physics
