Broadband Metasurfaces with Simultaneous Control of Phase and Amplitude

Kenney, M.G. , Liu, L., Zhang, X., Su, X., Xu, N., Ouyang, C., Shi, Y., Han, J., Zhang, W. and Zhang, S. (2015) Broadband Metasurfaces with Simultaneous Control of Phase and Amplitude. In: Nanometa '15: International Conference on Nanophotonics and Metamaterial, Seefeld, Austria, 5-8 Jan 2015,

Abstract

Metasurfaces have attracted large interest in recent years due to their relatively simple fabrication, compact design, and ability to control the wavefront of incident light. Ohmic loss attributed to bulk metal metamaterials are not a primary issue, whereby the meta-atom or plasmonic structure is typically only as thin as a fraction of the operation wavelength. Numerous novel applications have been demonstrated by metasurfaces, including an ultrathin metasurface flat lens, and 3D holography. Here, by combining the freedom of both the structural design and the orientation of split ring resonator antennas, we demonstrate Terahertz metasurfaces that are capable of controlling both the phase and amplitude profiles over a very broad bandwidth at ~1THz under linearly-polarised incidence. As an example, we show that these phase-amplitude metasurfaces can be engineered to control the diffraction orders arbitrarily.

• Item Type: Conference Proceedings
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Kenney, Dr Mitchell Guy
• Authors: Kenney, M.G., Liu, L., Zhang, X., Su, X., Xu, N., Ouyang, C., Shi, Y., Han, J., Zhang, W., and Zhang, S.
• Subjects: Q Science > Q Science (General); Q Science > QC Physics
• College/School: College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
• Research Group: Metamaterials Research Group
• Copyright Holders: Copyright © 2015 The Authors
• Publisher Policy: Reproduced with permission of Authors

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