Analysis and control of collective, coherent, and correlated electron dynamics in laser-driven metal nanostructures

在改变纳米结构形状和组成的无限选择的驱动下，该项目旨在探索纳米系统在受控强场下的基础物理和潜在新应用。极端的场局部化，明显的近场不均匀性，碰撞电子动力学，意想不到的增强，通过多粒子电荷相互作用，和非平凡的场变形通过场传播标记的一些重要的概念差异的激光驱动的纳米结构相比，原子和分子。对于该项目的延续，我们特别关注非微扰近场和多色驱动的金属纳米结构的光电发射，旨在揭示量子和经典方面的基础阿秒电子动力学的作用。通过相控双色光电发射和阿秒条纹的实验和理论分析相结合的金属nanocaptiles- 0-D nanotips和1-D nanoblades -我们努力确定从集体，相干和相关过程的签名，以进一步了解光场驱动的纳米结构及其应用。这是第一次，我们扩大维数在这里获得大的强场感应电流在1-D结构。

Driven by the unlimited options to vary the shape and composition of nanostructures, this project aims at exploring both the fundamental physics and potential new applications of nanosystems under controlled intense fields. Extreme field localization, pronounced near-field inhomogeneity, collisional electron dynamics, unexpected enhancements through many-particle charge interaction, and non-trivial field deformation via field propagation mark some of the important conceptual differences of laser-driven nanostructures compared to atoms and molecules. For the project continuation, we specifically focus on non-perturbative near-field and multi-color driven photoemission from metallic nanostructures and aim to uncover the role of quantum and classical aspects of the underyling attosecond electron dynamics. By combined experimental and theoretical analysis of phase-controlled two-color photoemission and attosecond streaking from metallic nanotapers – 0-D nanotips and 1-D nanoblades – we strive to identify signatures from collective, coherent, and correlated processes to further the understanding of light-field driven nanostructures and their applications. For the first time, we expand the dimensionality here to attain large strong-field induced currents in 1-D structures.