Phase jump in resonance harmonic emission driven by strong laser fields

作     者：Yuan-Yuan Zhao Di Zhao Chen-Wei Jiang Ai-Ping Fang Shao-Yan Gao Fu-Li Li 赵媛媛;赵迪;蒋臣威;方爱平;高韶燕;李福利

作者机构：School of ScienceXi'an Jiaotong UniversityXi'an 710049China 

出 版 物：《Chinese Physics B》 (中国物理B（英文版）)

年 卷 期：2020年第29卷第2期

页      面：243-248页

核心收录：

学科分类：080901[工学-物理电子学] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 080401[工学-精密仪器及机械] 0804[工学-仪器科学与技术] 0803[工学-光学工程] 080101[工学-一般力学与力学基础] 0801[工学-力学（可授工学、理学学位）] 

基　　金：Project supported by the National Natural Science Foundation of China(Grant Nos.11504288,11534008,and 91536115) the Fundamental Research Funds for the Central Universities of China 

主　　题：phase jump high-order harmonic generation Stark-shifted transition energy 

摘      要：We present a theoretical investigation of the multiphoton resonance dynamics in the high-order-harmonic generation(HHG)process driven by a strong driving continuous wave(CW)field along with a weak control harmonic *** Floquet theorem is employed to provide a nonperturbative and exact treatment of the interaction between a quantum system and the combined laser *** multiphoton-transition paths for the harmonic emission are coherently *** phase information about paths can be extracted via the Fourier transform analysis of the harmonic signals which oscillate as a function of the relative phase between driving and control *** jumps are observed when sweeping across the resonance by varying the frequency or intensity of the driving *** phase variation as a function of driving frequency at a fixed intensity and as a function of the intensity at a fixed driving frequency allows us to determine the intensity dependence of the transition energy of quantum systems.