| Autor: |
Powell, Jeffrey, Li, Jianxiong, Summers, Adam, Robatjazi, Seyyed Javad, Davino, Michael, Rupp, Philipp, Saydanzad, Erfan, Sorensen, Christopher M., Rolles, Daniel, Kling, Matthias F., Trallero-Herrero, Carlos, Thumm, Uwe, Rudenko, Artem |
| Rok vydání: |
2021 |
| Předmět: |
|
| Druh dokumentu: |
Working Paper |
| DOI: |
10.1021/acsphotonics.2c00663 |
| Popis: |
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$_2$ 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. |
| Databáze: |
arXiv |
| Externí odkaz: |
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