Physics of Multi-Electron Sytems Interacting with Novel Laser Sources

强激光场的波长范围现在从红外到XUV，而脉冲持续时间缩短到单场周期和进入阿秒制度。激光技术和实验发现的快速发展要求我们对光子与多电子原子和分子的非线性相互作用有一个全面的了解。该项目致力于模拟多电子系统与强激光脉冲相互作用的关键机制，并研究激光驱动原子和分子系统中发生的光物理过程。对于强场电离和高次谐波产生等多光子过程，将研究多电子效应、动态极化率以及分子结构和对称性的影响。这项研究工作的智力价值来自于解决含时薛定谔方程的理论和数值挑战，该方程考虑了原子和分子的多电子性质以及强激光场的非微扰性质。该项目的更广泛影响包括对不同层次学生的培训和教学活动。这包括研究生的培训，以及对从事独立研究项目或荣誉论文的本科物理专业学生的培训和指导。PI属于代表性不足的群体。

Wavelengths of intense laser fields range nowadays from the infrared to the XUV, while pulse durations are shortened to the single field cycle and into the attosecond regimes. This rapid progress in laser techniques and experimental discoveries calls for a thorough understanding of the non-linear interaction of photons with multielectron atoms and molecules. The project is devoted to modeling the key mechanisms of the interaction of multielectron system with intense laser pulses and investigating the photophysical processes occurring in laser driven atomic and molecular systems. For multiphoton processes such as strong field ionization and high harmonic generation, the significance of many-electron effects, dynamic polarizability, as well as the influence of the molecular structure and the symmetry will be studied. The intellectual merit of this research work arises from the theoretical and numerical challenges to solve the time dependent Schrodinger equation taking into account the multi-electron nature of atoms and molecules and the nonperturbative nature of the intense laser field.The broader impacts of the projecy comprise several activities for the training and teaching of students at different levels. This includes the training of a graduate student and training and guiding of undergraduate physics major students working on independent research projects or towards honors theses. The PI belongs to an underrepresented group.