https://doi.org/10.1051/epjam/2017013
Research Article
Broadband absorption with gradient metasurfaces
Department of Electrical and Computer Engineering, The University of Texas at Austin,
Austin,
TX
78712, USA
* e-mail: alu@mail.utexas.edu
Received:
29
September
2017
Accepted:
28
November
2017
Published online: 6 March 2018
A metasurface with appropriately designed transverse spatial inhomogeneities can provide the desired phase redistribution in response to an incident wave with arbitrary incident angle. This property of gradient metasurfaces has been used to modify light propagation in unusual manners, to transform the impinging optical wavefront with large flexibility. In this work, we show how gradient metasurfaces can be tailored to offer high absorption in thin absorptive layers, and how to design realistic metasurfaces for this purpose using dielectric materials.
© H. Kwon et al., published by EDP Sciences, 2018
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
