Bachelor's or Master's thesis "Ultimate limits of exceptional transmission amplification"
| Topic | Nanophotonics and -plasmonics, theory and simulation |
| Methods | Rigorous Coupled Wave Analysis (RCWA) |
| Skilly | Computational electrodynamics, nanoscience, quantum mechanics, programming |
| Software | Python, C/C++, Matlab, Mathematica, COMSOL |
Beachtet man Quanteneffekte in Metallen für metallische Filme mit Löchern, findet man starke Unterschiede zu klassisch erwarteten, optischen Koeffizienten.
Image: Prof. Dr. Ulf PeschelExtraordinary optical transmission (EOT) is the ability of nanometer-sized hole patterns in metallic substrates to transmit light at wavelengths significantly larger than the holes. At true nanometer scales, effects beyond classical electrodynamics become important, in particular, the finite shape of the wave function of electrons in metal.
In this work, we explore the ultimate limit of EOT in the context of quantum effects in metal when holes in it reach an atomic scale. What is the impact of such localized effects on the optical properties of a macroscopic device?
A theoretical model considering realistic wave functions of electrons is developed and connected to the RCWA method for multilayer systems. Thin film systems and complex devices are investigated.