探测凝聚态材料中电子的阿秒动力学以及相互作用过程(特邀)

Probing Intrinsic Attosecond Electron Dynamics and Interactions in Condensed Matters(Invited)

随着高次谐波阿秒光源技术以及阿秒计量学的发展,对于凝聚态材料中的电子动力学探测也进入了阿秒的领域,并在近15年的时间里取得了显著的进展和突破。新颖的阿秒测量方式为研究在极短的时间尺度上,凝聚态材料中电子的运动、共振跃迁以及相互作用等重要物理问题提供了全新的研究手段和重要创新机遇。本文介绍了探测凝聚态物质中本征阿秒动力学过程的重要工作,主要综述了高次谐波、阿秒脉冲测量、凝聚态材料阿秒光电子能谱探测的关键技术和现状。最后对阿秒光电子动力学测量技术的发展做出了展望。

As the development of attosecond sources and metrology technologies,the studies on ultrafast electron dynamics in condensed matter have entered the attosecond regime,leading to remarkable progress and breakthroughs in the past 15 years.Novel attosecond metrology has opened up new opportunities for the detection of ultrafast electron movement,resonant excitation,as well as complex electron-electron interactions on the attosecond timescale.This review surveys the important efforts aimed at probing intrinsic attosecond dynamics in condensed matters.The key technologies and status of attosecond sources enabled by high-harmonic generation,attosecond pulse measurements,and the detection of attosecond photoemission time delay on condensed matters are summarized.The development prospects are presented in the end.