Perfectly Reflectionless Omnidirectional Absorbers and Electromagnetic Horizons
Abstract
We demonstrate the existence of metamaterial blueprints describing, and fundamental limitations concerning, perfectly reflectionless omnidirectional electromagnetic absorbers (PR-OEMA). Previous attempts to define PR-OEMA blueprints have led to active (gain), rather than passive, media. We explain this fact and unveil new, distinct limitations of true PR-OEMA devices, including the appearance of an "electromagnetic horizon" on physical solutions. As practical alternatives we introduce alternative OEMA blueprints corresponding to media that, while not reflectionless, are nonetheless effective in absorbing incident waves in a manner robust to incident wave diversity.
Keywords
Cite
@article{arxiv.1405.6413,
title = {Perfectly Reflectionless Omnidirectional Absorbers and Electromagnetic Horizons},
author = {Kamalesh Sainath and Fernando L. Teixeira},
journal= {arXiv preprint arXiv:1405.6413},
year = {2016}
}
Comments
The published version of this manuscript, along with copyright information, can be found using this URL: http://dx.doi.org/10.1364/JOSAB.32.001645. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modifications of the content of this paper are prohibited