Light-induced electron dynamics in and around metallic nanostructures (A03)

金属纳米结构内部及其周围的光诱导电子动力学 (A03)

• 批准号: 427855947
• 金额: --
• 依托单位: Institut für Festkörpertheorie und Theoretische Optik
• 依托单位国家: 德国
• 项目类别: Collaborative Research Centres
• 财政年份: 2019
• 资助国家: 德国
• 起止时间: 2018-12-31 至 2022-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/427855947?language=en
• 关键词: Light; induced; electron; dynamics; around

Since optical near-field manipulation is mainly achieved by employing field enhancement around metallic tips and within nanogaps between metallic walls, the activities of this project are devoted to a precise theoretical description of light evolution within and around such plasmonic structures. Current, commonly used effective material models are known to fail when reaching atomic dimensions where quantum mechanical nonlocality comes into play. The theory to be developed in this project will go beyond classical schemes thus including quantum effects and optical nonlinearities of the Fermi fluid in metals. This supports experiments in projects B3|Szeghalmi/Tünnermann and B4|Nolte/Zeitner, which investigate light-induced electron tunneling and nonlin-ear optics in atomically thin metallic films. It also supports the projects C1|Huang/Popp and C2|Deckert/Pertsch which are dealing with extreme plasmonic field concentration.

由于光学近场操纵主要是通过在金属尖端周围和金属壁之间的纳米间隙内采用场增强来实现的，因此该项目的活动致力于对这种等离子体结构内部和周围的光演化进行精确的理论描述。目前常用的有效材料模型在达到量子力学非定域性发挥作用的原子尺度时会失效。本计画所发展的理论将超越传统的理论，包括金属中费米流体的量子效应与光学非线性。这支持项目B3中的实验|Szeghalmi/Tünnermann和B4| Nolte/Zeitner，他们研究原子级薄金属膜中的光诱导电子隧穿和非线性光学。它还支持项目C1| Huang/Popp和C2| Deckert/Pertsch正在处理极端等离子体激元场浓度。