Review on typical applications and computational optimizations based on semiclassical methods in strong-field physics  

作　　者：Xun-Qin Huo Wei-Feng Yang Wen-Hui Dong Fa-Cheng Jin Xi-Wang Liu Hong-Dan Zhang Xiao-Hong Song 火勋琴;杨玮枫;董文卉;金发成;刘希望;张宏丹;宋晓红(Institute of Mathematics,College of Science,Shantou University,Shantou 515063,China;School of Science,Hainan University,Haikou 570288,China;Research Center for Advanced Optics and Photoelectronics,Department of Physics,College of Science,Shantou University,Shantou 515063,China;Faculty of Science,Xi'an Aeronautical University,Xi'an 710077,China)

机构地区：[1]Institute of Mathematics,College of Science,Shantou University,Shantou 515063,China [2]School of Science,Hainan University,Haikou 570288,China [3]Research Center for Advanced Optics and Photoelectronics,Department of Physics,College of Science,Shantou University,Shantou 515063,China [4]Faculty of Science,Xi'an Aeronautical University,Xi'an 710077,China

出　　处：《Chinese Physics B》2022年第3期1-15,共15页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China(Grants Nos.91950101,12074240,and 12104285);Sino-German Mobility Programme(Grant No.M0031);the High Level University Projects of the Guangdong Province,China(Mathematics,Shantou University);the Open Fund of the State Key Laboratory of High Field Laser Physics(SIOM)。

摘　　要：The semiclassical method based on Feynman’s path-integral is in favor of uncovering the quantum tunneling effect,the classical trajectory description of the electron, and the quantum phase information, which can present an intuitive and transparent physical image of electron’s propagation in comparison with the ab initio time-dependent Schr ¨odinger equation.In this review, we introduce the basic theoretical concepts and development of several semiclassical methods as well as some of their applications in strong-field physics. Special emphasis is placed on extracting time delay on attosecond scale by the combination of the semiclassical method with phase of phase method. Hundreds of millions of trajectories are generally adopted to obtain a relatively high-resolution photoelectron spectrum, which would take a large amount of time. Here we also introduce several optimization approaches of the semiclassical method to overcome the time-consuming problem of violence calculation.

关 键 词：semiclassical method attosecond time delay Phase of Phase deep learning 

分 类 号：O562.4[理学—原子与分子物理]