Strong-field control of plasmonic properties in core-shell nanoparticles
Abstract
The strong-field control of plasmonic nanosystems opens up new perspectives for nonlinear plasmonic spectroscopy and petahertz electronics. Questions, however, remain regarding the nature of nonlinear light-matter interactions at sub-wavelength spatial and ultrafast temporal scales. Addressing this challenge, we investigated the strong-field control of the plasmonic response of Au nanoshells with a SiO core to an intense laser pulse. We show that the photoelectron energy spectrum from these core-shell nanoparticles displays a striking transition between the weak and strong-field regime. This observed transition agrees with the prediction of our modified Mie-theory simulation that incorporates the nonlinear dielectric nanoshell response. The demonstrated intensity-dependent optical control of the plasmonic response in prototypical core-shell nanoparticles paves the way towards ultrafast switching and opto-electronic signal modulation with more complex nanostructures.
Keywords
Cite
@article{arxiv.2108.06872,
title = {Strong-field control of plasmonic properties in core-shell nanoparticles},
author = {Jeffrey Powell and Jianxiong Li and Adam Summers and Seyyed Javad Robatjazi and Michael Davino and Philipp Rupp and Erfan Saydanzad and Christopher M. Sorensen and Daniel Rolles and Matthias F. Kling and Carlos Trallero-Herrero and Uwe Thumm and Artem Rudenko},
journal= {arXiv preprint arXiv:2108.06872},
year = {2022}
}