Large-Scale All-Dielectric Metamaterial Perfect Reflectors
| Autor: | Jason Valentine, Srinivasan Krishnamurthy, Dayrl P. Briggs, Parikshit Moitra, Brian A. Slovick, Wei Li, Ivan I. Kravchencko |
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| Rok vydání: | 2015 |
| Předmět: |
Materials science
Silicon business.industry Bandwidth (signal processing) Physics::Optics chemistry.chemical_element Metamaterial Dielectric Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials Resonator Optics chemistry Metamaterial absorber Optoelectronics Nanosphere lithography Electrical and Electronic Engineering Photonics business Biotechnology |
| Zdroj: | ACS Photonics. 2:692-698 |
| ISSN: | 2330-4022 |
| DOI: | 10.1021/acsphotonics.5b00148 |
| Popis: | All-dielectric metamaterials offer a potential low-loss alternative to plasmonic metamaterials at optical frequencies. Here, we take advantage of the low absorption loss as well as the simple unit cell geometry to demonstrate large-scale (centimeter-sized) all-dielectric metamaterial perfect reflectors made from silicon cylinder resonators. These perfect reflectors, operating in the telecommunications band, were fabricated using self-assembly based nanosphere lithography. In spite of the disorder originating from the self-assembly process, the average reflectance of the metamaterial perfect reflectors is 99.7% at 1530 nm, surpassing the reflectance of metallic mirrors. Moreover, the spectral separation of the electric and magnetic resonances can be chosen to achieve the required reflection bandwidth while maintaining a high tolerance to disorder. The scalability of this design could lead to new avenues of manipulating light for low-loss and large-area photonic applications. |
| Databáze: | OpenAIRE |
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