Reconstructing coherent dynamics of bound states induced by strong attosecond XUV pulses  

作　　者：贾利娟 刘明清 王新强 徐龙 闫培光 姜维超 傅立斌 Lijuan Jia;Mingqing Liu;Xinqiang Wang;Long Xu;Peiguang Yan;Wei-Chao Jiang;Libin Fu(Institute of Quantum Precision Measurement,College of Physics and Optoelectronic Engineering,Shenzhen University,Shenzhen 518060,China;Department of Physics,Xiamen University,Xiamen 361005,China;Graduate School of China Academy of Engineering Physics,Beijing 100193,China)

机构地区：[1]Institute of Quantum Precision Measurement,College of Physics and Optoelectronic Engineering,Shenzhen University,Shenzhen 518060,China [2]Department of Physics,Xiamen University,Xiamen 361005,China [3]Graduate School of China Academy of Engineering Physics,Beijing 100193,China

出　　处：《Chinese Optics Letters》2024年第2期56-63,共8页中国光学快报（英文版）

基　　金：supported by the National Natural Science Foundation of China(Nos.12088101,12047548,12074265,and U2330401);Science Challenge Project(No.TZ2018005);Guangdong Basic and Applied Basic Research Foundation(No.2022A1515010329)。

摘　　要：We propose a scheme that utilizes weak-field-induced quantum beats to investigate the electronic coherences of atoms driven by a strong attosecond extreme ultraviolet(XUV)pulse.The technique involves using a strong XUV pump pulse to excite and ionize atoms and a time-delayed weak short pulse to probe the photoelectron signal.Our theoretical analysis demonstrates that the information regarding the bound states,initiated by the strong pump pulse,can be precisely reconstructed from the weak-field-induced quantum beat spectrum.To examine this scheme,we apply it to the attosecond XUV laser-induced ionization of hydrogen atoms by solving a three-dimensional time-dependent Schr?dinger equation.This work provides an essential reference for reconstructing the ultrafast dynamics of bound states induced by strong XUV attosecond pulses.

关 键 词：attosecond pulse bound-state dynamics quantum beats 

分 类 号：O56[理学—原子与分子物理] TN24[理学—物理]