Conference paper
Are there novel resonances in nanoplasmonic structures due to nonlocal response?
Department of Photonics Engineering, Technical University of Denmark1
Structured Electromagnetic Materials, Department of Photonics Engineering, Technical University of Denmark2
Department of Micro- and Nanotechnology, Technical University of Denmark3
Theory Section, Department of Micro- and Nanotechnology, Technical University of Denmark4
Center for Electron Nanoscopy, Technical University of Denmark5
In tiny metallic nanostructures, quantum confinement and nonlocal response change the collective plasmonic behaviour with resulting important consequences for e.g. field-enhancement and extinction cross sections. Here we report on nonlocal resonances in the hydrodynamical Drude model for plasmonic nanostructures that have no counterpart in the local-response Drude model.
Even though there are no additional resonances in the visible due to nonlocal response, plasmonic field enhancements are affected by nonlocal response. We present both analytical results for simple geometries and our numerical implementation for arbitrary geometries, and address computational issues related to the several length scales involved.
| Language: | English |
|---|---|
| Year: | 2012 |
| Pages: | 82601E-7 |
| Proceedings: | SPIE Photonics West |
| ISSN: | 1996756x and 0277786x |
| Types: | Conference paper |
| DOI: | 10.1117/12.908404 |
| ORCIDs: | Wubs, Martijn , Raza, Søren , Jauho, Antti-Pekka and Mortensen, N. Asger |
