摘要
We propose an improved design and numerical study of an optimized tunable plasmonics artificial material resonator in the terahertz regime. We demonstrate that tunability can be realized with a transmission intensity as much as - 61% in the lower frequency resonance, which is implemented through the effect of photoconductive switching under photoexcitation.In the higher frequency resonance, we show that spoof surface plasmons along the interface of metal/dielectric provide new types of electromagnetic resonances. Our approach opens up possibilities for the interface of metamaterial and plasmonics to be applied to optically tunable THz switching.
We propose an improved design and numerical study of an optimized tunable plasmonics artificial material resonator in the terahertz regime. We demonstrate that tunability can be realized with a transmission intensity as much as - 61% in the lower frequency resonance, which is implemented through the effect of photoconductive switching under photoexcitation.In the higher frequency resonance, we show that spoof surface plasmons along the interface of metal/dielectric provide new types of electromagnetic resonances. Our approach opens up possibilities for the interface of metamaterial and plasmonics to be applied to optically tunable THz switching.
基金
Project supported by the National Natural Science Foundation of China(Grant No.61201075)
the Natural Science Foundation of Heilongjiang Province
China(Grant No.F2015039)
the Young Scholar Project of Heilongjiang Provincial Education Bureau
China(Grant No.1254G021)
the China Postdoctoral Science Foundation(Grant No.2012M511507)
the Science Funds for the Young Innovative Talents of Harbin University of Science and Technology
China(Grant No.201302)
