• 文献标题:   Frequency-tunable circular polarization beam splitter using a graphene-dielectric sub-wavelength film
  • 文献类型:   Article
  • 作  者:   CHEN T, HE SL
  • 作者关键词:  
  • 出版物名称:   OPTICS EXPRESS
  • ISSN:   1094-4087
  • 通讯作者地址:   Zhejiang Univ
  • 被引频次:   7
  • DOI:   10.1364/OE.22.019748
  • 出版年:   2014

▎ 摘  要

Manipulating the circular polarization of light is of great importance in chemistry and biology, as chiral molecules exhibit different physiological properties when exposed to different circularly polarized waves. Here we suggest a graphene/dielectric-stacked structure, which has both the properties of an epsilon-near-zero material and the high Hall conductivity of graphene. The proposed sub-wavelength structure demonstrates efficient manipulation of circular polarization properties of light. In a quite broad frequency range and at a large oblique incidence angle, the present magnetically active structure is transparent for one circularly polarized wave, and opaque for another. Such an effect can be further tuned by changing the magnitude of the applied magnetic field and chemical potential of graphene. (C) 2014 Optical Society of America