Simulation of spatiotemporal light dynamics based on the time-dependent Schrödinger equation

作     者：Richter, Maria Morales, Felipe Patchkovskii, Serguei Husakou, Anton 

作者机构：Max Born Inst Nonlinear Opt & Short Pulse Spect Max Born Str 2a D-12489 Berlin Germany 

出 版 物：《OPTICS EXPRESS》 (Opt. Express)

年 卷 期：2023年第31卷第24期

页      面：39941-39952页

核心收录：

学科分类：070207[理学-光学] 07[理学] 08[工学] 0803[工学-光学工程] 0702[理学-物理学] 

基　　金：Deutsche Forschungsgemeinschaft [HU 1593/11-1] 

主　　题：Femtosecond pulses Finite-difference time-domain method High harmonic generation Kerr effect Light matter interactions Light propagation 

摘      要：We establish a first-principle model for the simulation of spatiotemporal light pulse dynamics based on the combination of the time-dependent Schrodinger equation and the unidirectional propagation equation. The proposed numerical scheme enables computationally efficient simulation while being stable and accurate. We use the new model to examine self-focusing of a short pulse in atomic hydrogen and show that an accurate description of the excited-levels dynamics can only be achieved by a propagation model with an ab-initio description of the light-matter interaction, which accounts for the laser-dressed multilevel structure of the system, including bound and free states, and its sub-cycle response.(c) 2023 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement