期刊
OPTICS EXPRESS
卷 26, 期 13, 页码 17447-17457出版社
OPTICAL SOC AMER
DOI: 10.1364/OE.26.017447
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资金
- National Natural Science Foundation of China [61475079, 11604167, 11734007, 11674068]
- National Basic Research Program of China [2017YFA0303500]
- Shanghai Science and Technology Committee [16JC1403100]
- K. C. Wong Magna Fund in Ningbo University
Achieving multiple diversified functionalities in a single flat device is crucial for electromagnetic (EM) integration. While many recent efforts were devoted to designing multifunctional metasurfaces, most meta-devices realized so far typically exhibit only two functionalities. In this paper, we propose a generic strategy to design trifunctional metasurfaces, based on carefully designed single structure meta-atoms possessing polarization-controlled transmission/reflection properties. As a proof of our concept, we design and fabricate a trifunctional metasurface possessing simultaneously three distinct functionalities including beam splitting, deflecting, and focusing, and perform both far-field and near-field microwave experiments to demonstrate the predicted functionalities of the fabricated device. Experimental results are in good agreement with numerical simulations. These findings can motivate the realizations of high-performance multifunctional meta-devices in different frequency domains and with diversified functionalities. (C) 2018 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
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