期刊
APPLIED PHYSICS LETTERS
卷 102, 期 13, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4800931
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资金
- Fu Foundation School of Engineering and Applied Science
- Department of Applied Physics and Applied Mathematics, Columbia University
We show that large modulation of the amplitude and phase of mid-infrared light can be achieved by dynamically shifting the resonance of graphene-metal plasmonic antennas via electrical tuning of the optical conductivity of graphene. Intensity modulation with on-off extinction ratio exceeding 100 and phase modulation over a range of 240 degrees are demonstrated by simulations of scattered light from arrays of such antennas. The modulation rate is estimated to be on the order of a few GHz. These properties are promising for creating reconfigurable flat optical components such as spatial light modulators in the mid-infrared spectral range. (C) 2013 American Institute of Physics. [http://dx.doi.org/10.1063/1.4800931]
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