物理学报2025，Vol.74Issue(24)：37-51,15.DOI:10.7498/aps.74.20251166
阿秒符合干涉仪与原子分子及团簇体系阿秒光电子电离延迟测量
Attosecond coincidence interferometer and measurement of attosecond photoelectron ionization time delay in atomic,molecular and cluster systems
摘要
Abstract
The evolution mechanisms of electrons in isolated atoms,molecules and complex systems on a natural time-scale have long been a fundamental question in atomic and molecular physics,with significant implications for the applications of quantum materials.Over the past two decades,the development of attosecond light pulses and attosecond metrology has opened new opportunities for investigating the electronic dynamics,while also posing new challenges.Traditional detection techniques,such as time-of-flight and velocity map imaging spectrometers,can be used to study the attosecond scattering phase shifts in the photoemission and ionization processes with extremely high temporal and energy resolution.However,the limitations in multi-particle coincidence detection and three-dimensional momentum correlation limit the deeper exploration of many-body correlations and non-adiabatic ultrafast dynamics involving electron-nuclear coupling.To enable multidimensional and real-time observation of the three-dimensional momenta of both electrons and ions during photoionization,the attosecond interferometry has been integrated into electron-ion coincidence systems.In this study,we utilize an attosecond coincidence interferometer that combines an attosecond pump-infrared femtosecond probe scheme with cold target recoil ion momentum spectroscopy.The apparatus enables attosecond-time-resolved momentum imaging of all charged fragments in atomic and molecular systems,thereby providing deeper insights into the dynamics of photoionization.We also highlight the recent groundbreaking applications and advances of attosecond coincidence interferometer in studying photoionization dynamics in atoms,molecules,and more complex systems.关键词
符合测量/阿秒光谱学/原子分子超快动力学/微观体系光电离Key words
coincidence measurement/attosecond spectroscopy/atomic and molecular ultrafast dynamics/microscopic-system photoionization引用本文复制引用
王旭涵,欧显彬,宫晓春..阿秒符合干涉仪与原子分子及团簇体系阿秒光电子电离延迟测量[J].物理学报,2025,74(24):37-51,15.基金项目
国家自然科学基金(批准号:12261160363,12122404)和上海市科委科技基金(批准号:23560760100)资助的课题. Project supported by the National Natural Science Foundation of China(Grant Nos.12261160363,12122404)and the Shanghai Committee of Science and Technology,China(Grant No.23560760100). （批准号:12261160363,12122404）
