Mid-infrared directional surface waves on a high aspect ratio nano-trench platform
Abstract
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 function as a versatile platform supporting both surface and volume infrared waves. The surface waves exhibit a unique combination of properties, such as directionality, broadband existence (from 4 {\mu}m to at least 14 {\mu}m and beyond) and high localization, making them an attractive tool for effective control of light in an extended range of infrared frequencies.
Keywords
Cite
@article{arxiv.1704.06108,
title = {Mid-infrared directional surface waves on a high aspect ratio nano-trench platform},
author = {Osamu Takayama and Evgeniy Shkondin and Andrey Bodganov and Mohammad Esmail Aryaee Panah and Kirill Golenitskii and Pavel Dmitriev and Taavi Repän and Radu Malureanu and Pavel Belov and Flemming Jensen and Andrei V. Lavrinenko},
journal= {arXiv preprint arXiv:1704.06108},
year = {2017}
}
Comments
19 pages, 4 figures