Abstract
We experimentally demonstrate bilayer metasurfaces for optical antireflection. The metasurfaces consist of a square array of silicon pillars with self-aligned top gold resonators and complementary bottom gold slots, enabling near-zero reflection and simultaneously close-to-unity transmission at designed operational frequencies in the terahertz and mid-infrared spectral regions. We further demonstrate THz bandpass filters based on stacked bilayer metasurfaces, allowing fairly narrow, fast roll-off, and high-transmission bandpass performance, with an extremely clean background outside the passband.
| Original language | English |
|---|---|
| Pages (from-to) | 485-486 |
| Number of pages | 2 |
| Journal | International Conference on Metamaterials, Photonic Crystals and Plasmonics |
| Publication status | Published - 2019 |
| Externally published | Yes |
| Event | 10th International Conference on Metamaterials, Photonic Crystals and Plasmonics, META 2019 - Lisbon, Portugal Duration: 2019 Jul 23 → 2019 Jul 26 |
ASJC Scopus subject areas
- Electrical and Electronic Engineering
- Materials Science (miscellaneous)
- Electronic, Optical and Magnetic Materials
- Materials Chemistry