Journal
APPLIED PHYSICS LETTERS
Volume 106, Issue 2, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4905580
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Funding
- National High Tech (863) Projects [2012AA030402, 2011AA010202]
- National Science Foundation of China [61138001, 60990320, 60990324]
- 111 Project [111-2-05]
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We propose a spoof surface plasmon polariton (SPP) emitter which is composed of ultrathin corrugated metallic strips, exhibiting the directional radiation property. The spoof SPP emitter provides a way to quickly convert the SPP mode to a radiated mode. By controlling phase modulations produced by the phase-gradient metasurface on the ultrathin metallic strips, we demonstrate theoretically and experimentally that spoof SPP waves are converted into spatial propagating waves with high efficiency, which are further radiated with flexible beam steering. The proposed method sets up a link between SPP waves and radiation waves in a highly controllable way, which would possibly open an avenue in designing new kinds of microwave and optical elements in engineering. (C) 2015 AIP Publishing LLC.
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