Journal
OPTICS EXPRESS
Volume 21, Issue 9, Pages 10739-10745Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.21.010739
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Funding
- NSFC [10974144, 11174221, 11204218]
- CNKBRSF [2011CB922001]
- 863 Major Program [2012AA03A706]
- Fundamental Research Funds for the Central Universities, SHEDF [06SG24]
- China Postdoctoral Science Foundation [2011M500810, 2012T50433]
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We propose an ultra-thin planar metasurface with phase discontinuities for highly efficient beam steering. The effect benefits from the broadband transparency and flexible phase modulation of stacked metal/dielectric multi-layers that is perforated with coaxial annular apertures. Proof-of-principle experiments verify that an efficiency of 65% and a deflection angle of 18 degrees at 10GHz are achieved for the transmitted beam, which are also in good agreement with the finite-difference-method-in-time-domain (FDTD) simulations. The scheme shall be general for the design of beam-steering transmitters in all frequencies. (C) 2013 Optical Society of America
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