期刊
ACS PHOTONICS
卷 4, 期 11, 页码 2899-2907出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsphotonics.7b00924
关键词
hyperbolic metamaterial; Dyakonov surface waves; plasmonics
类别
资金
- Villum Fonden Blokstipendium
- DarkSILD [11116]
- Direktor lb Henriksens Fond, Denmark
- Russian Science Foundation [17-19-01731]
- Ministry of Education and Science of the Russian Federation [3.1668.2017/4.6]
- Villum Fonden [00011116] Funding Source: researchfish
- Russian Science Foundation [17-19-01731] Funding Source: Russian Science Foundation
Optical surface waves, highly localized modes bound to the surface of media, enable manipulation of light at nanoscale, thus impacting a wide range of areas in nanoscience. By applying metamaterials, artificially designed optical materials, as contacting media at the interface, we can significantly ameliorate surface wave propagation and even generate new types of waves. Here, we demonstrate that high aspect ratio (1:20) grating structures with plasmonic lamellas in deep nanoscale trenches, whose pitch is 1/10-1/35 of a wavelength, function as a versatile platform supporting both surface and guided bulk infrared waves. The surface waves exhibit a unique combination of properties: directionality, broadband existence (from 4 mu m to at least 14 pm and beyond) and high localization, making them an attractive tool for effective control of light in an extended range of infrared frequencies.
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