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Scientific reports v.6, 2016년, pp.37861 -    SCI SCIE
본 등재정보는 저널의 등재정보를 참고하여 보여주는 베타서비스로 정확한 논문의 등재여부는 등재기관에 확인하시기 바랍니다.

Plasmonic metalens based on coupled resonators for focusing of surface plasmons

Xu, Quan (Center for Terahertz waves and College of Precision Instrument and Optoelectronics Engineering, Tianjin University and the Key Laboratory of Optoelectronics Information and Technology (Ministry of Education), Tianjin 300072, China ) ; Zhang, Xueqian (Cooperative Innovation Center of Terahertz Science, Chengdu 610054, China ) ; Xu, Yuehong (Center for Terahertz waves and College of Precision Instrument and Optoelectronics Engineering, Tianjin University and the Key Laboratory of Optoelectronics Information and Technology (Ministry of Education), Tianjin 300072, China ) ; Li, Quan (Cooperative Innovation Center of Terahertz Science, Chengdu 610054, China ) ; Li, Yanfeng (Center for Terahertz waves and College of Precision Instrument and Optoelectronics Engineering, Tianjin University and the Key Laboratory of Optoelectronics Information and Technology (Ministry of Education), Tianjin 300072, China ) ; Ouyang, Chunmei (Cooperative Innovation Center of Terahertz Science, Chengdu 610054, China ) ; Tian, Zhen (Center for Terahertz waves and College of Precision Instrument and Optoel ) ; Gu, Jianqiang ; Zhang, Wentao ; Zhang, Xixiang ; Han, Jiaguang ; Zhang, Weili ;
  • 초록  

    As an essential functionality, flexible focusing of surface plasmons (SPs) is of particular interest in nonlinear optics and highly integrated plasmonic circuitry. Here, we developed a versatile plasmonic metalens, a metasurface comprised of coupled subwavelength resonators, whose optical responses exhibit a remarkable feature of electromagnetically induced transparency (EIT). We demonstrate numerically and experimentally how a proper spatial design of the unit elements steers SPs to arbitrary foci based on the holographic principles. More specifically, we show how to control the interaction between the constituent EIT resonators to efficiently manipulate the focusing intensity of SPs. We also demonstrated that the proposed metalens is capable of achieving frequency division multiplexing. The power and simplicity of the proposed design would offer promising opportunities for practical plasmonic devices.


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