Ultra-broadband plasmonic groove absorbers for visible light optimized by genetic algorithms
| Autor: | Vitaly F. Rodriguez-Esquerre, Davi Franco Rêgo, Igor Leonardo Gomes de Souza |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Materials science
business.industry Surface plasmon Physics::Optics 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials 010309 optics Wavelength 0103 physical sciences Polariton Optoelectronics Electrical and Electronic Engineering Photonics 0210 nano-technology Absorption (electromagnetic radiation) business Groove (engineering) Plasmon Visible spectrum |
| Zdroj: | OSA Continuum. 1:796 |
| ISSN: | 2578-7519 |
| DOI: | 10.1364/osac.1.000796 |
| Popis: | Plasmonic groove structures, which are widely known for their absorbent properties of light, are numerically investigated and optimized. Genetic algorithms have been successfully used to aid in the design of two-dimensional high efficiency wide-angle plasmonic groove absorbers for visible wavelengths. We demonstrate that the genetic algorithm is a powerful and flexible evolutionary optimization tool, able to handle high challenging design tasks by optimizing several complex problems currently of high interest to the optics and photonics community. The novel proposed periodic groove structure exhibits absorption above 90% for ultra-broadband wavelengths ranging from 300 to 700 nm. The resonant modes induce localized zero wavevector plasmon polaritons in the metallic material, which favors absorption and may also enhance non-linear optical processes. |
| Databáze: | OpenAIRE |
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