Abstract
Ultrathin adhesion layers serve a well-documented fabrication purpose while its influence on the optical properties of gold nanostructures is often neglected. Gold split-ring resonators are fabricated with two commonly used adhesion layers: titanium and indium tin oxide. When compared to all-gold reference samples, a spectral shift of the ground mode resonance is observed. For the titanium sample the spectral shift is accompanied by a resonance broadening, which is less profound for indium tin oxide. The mutual correlation between the shift and the broadening is shown to be qualitatively consistent with perturbative considerations.
| Original language | English |
|---|---|
| Journal | Applied Physics Letters |
| Volume | 97 |
| Issue number | 26 |
| Pages (from-to) | 2631103 |
| ISSN | 0003-6951 |
| DOIs | |
| Publication status | Published - 2010 |
Keywords
- optical fabrication
- tin compounds
- optical resonators
- nanofabrication
- titanium
- spectral line broadening
- nanophotonics
- spectral line shift
- optical materials
- gold
- indium compounds