Metamaterials subwavelength terahertz resonant cavities
| Autor: | Abdulhadi Al-Janabi, Alexander Argyros, Simon Fleming, M. Al-Rubaiee |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Band gap
Terahertz radiation Resonator Physics::Optics 02 engineering and technology 01 natural sciences Electromagnetic radiation 010309 optics 0103 physical sciences Classical electromagnetism Subwavelength cavities Applied optics. Photonics Physics Range (particle radiation) business.industry Metamaterial Resonance Wire array QC350-467 Optics. Light 021001 nanoscience & nanotechnology Physics::Classical Physics Atomic and Molecular Physics and Optics TA1501-1820 Metamaterials Optoelectronics 0210 nano-technology business |
| Zdroj: | Journal of the European Optical Society-Rapid Publications, Vol 17, Iss 1, Pp 1-9 (2021) |
| ISSN: | 1990-2573 |
| Popis: | One of the unique properties of metamaterials is the ability to manipulate electromagnetic waves at subwavelength scales, made possible by their structure on these scales. Here, rather than consider effective bulk properties, we consider the properties of microscopic features based on considering resonant unit cells. We used wire array metamaterials to form localized resonant cavities by changing the resonance frequency of one or more unit cells, surrounded by unchanged unit cells that do not support resonance for the propagating mode (i.e. forming a band gap). We validate our approach experimentally with electromagnetic waves in the terahertz range, demonstrating and characterizing subwavelength resonant cavities in this range. These resonant cavities can pave the way for ultra-compact subwavelength waveguides and other optical components. |
| Databáze: | OpenAIRE |
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