Direct Visualization of Deforming Atomic Wavefunction in Ultraintense High-Frequency Laser Pulses  

作　　者：Jintai Liang Yueming Zhou Yijie Liao Wei-Chao Jiang Min Li Peixiang Lu 

机构地区：[1]School of Physics and Wuhan National Laboratory for Optoelectronics,Huazhong University of Science and Technology,Wuhan 430074,China [2]College of Physics and Optoelectronic Engineering,Shenzhen University,Shenzhen 518060,China [3]Optics Valley Laboratory,Hubei 430074,China

出　　处：《Ultrafast Science》2022年第5期13-20,共8页超快科学（英文）

基　　金：National Key Research and Development Program of China(2019YFA0308300);National Natural Science Foundation of China(11874163,12074265 and 12021004)。

摘　　要：Interaction of intense laser fields with atoms distorts the bound-state electron cloud.Tracing the temporal response of the electron cloud to the laser field is of fundamental importance for understanding the ultrafast dynamics of various nonlinear phenomena of matter,but it is particularly challenging.Here,we show that the ultrafast response of the atomic electron cloud to the intense high-frequency laser pulses can be probed with the attosecond time-resolved photoelectron holography.In this method,an infrared laser pulse is employed to trigger tunneling ionization of the deforming atom.The shape of the deforming electron cloud is encoded in the hologram of the photoelectron momentum distribution.As a demonstration,by solving the time-dependent Schrödinger equation,we show that the adiabatic deforming of the bound-state electron cloud,as well as the nonadiabatic transition among the distorted states,is successfully tracked with attosecond resolution.Our work films the formation process of the metastable Kramers-Henneberger states in the intense high-frequency laser pulses.This establishes a novel approach for time-resolved imaging of the ultrafast bound-state electron processes in intense laser fields.

关 键 词：INTENSE PHOTOELECTRON RESOLVED 

分 类 号：TN24[电子电信—物理电子学]