期刊
OPTICS EXPRESS
卷 23, 期 6, 页码 7593-7601出版社
OPTICAL SOC AMER
DOI: 10.1364/OE.23.007593
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资金
- National High Tech (863) Projects [2012AA030402, 2011AA010202]
- National Science Foundation of China [60990320, 61138001]
- 111 Project [111-2-05]
- Natural Science Foundation of the Jiangsu Providence [BK2012019]
We propose to use backward radiations of leaky waves supported by a holographic metasurface to produce spatial Bessel beams in the microwave frequency regime. The holographic metasurface consists of a grounded dielectric slab and a series of metal patches. By changing the size of metal patches, the surface-impedance distribution of the holographic metasurface can be modulated, and hence the radiation properties of the leaky waves can be designed to realize Bessel beams. Both numerical simulations and experiments verify the features of spatial Bessel beams, which may be useful in imaging applications or wireless power transmissions with the dynamic focal-depth controls. (C) 2015 Optical Society of America
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