title: Polarization characteristics of the metallic structure with elliptically helical metamaterials.
abstract: In the last few years, there has been growing interest in the research of the polarizing optics consisting of sub-wavelength metamaterials due to the advantages of broad wavelength ranges, high temperature durability, and compact structures. So far, the metallic structure with the sub-wavelength metamaterials has been proved to achieve the linearly and the circularly polarized light. Therefore, there should be one question raised easily: Is it possible for the metallic structure with sub-wavelength metamaterials to generate the elliptically polarized light? To answer this question, we proposed a metallic structure with elliptically helical nanowires, and analyzed the polarization states of the transmitted light using FDTD method. It is confirmed that this metallic structure does have a giant elliptical dichroism. Furthermore, we also compared the distinct optical performances of elliptical single-, double-, three-, and four-helixes, and made a qualitative explanation for them.
authors.affiliation: Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, Hubei, China.
authors.forename: Lin
authors.initials: L
authors.lastname: Wu
authors.forename: ZhenYu
authors.initials: Z
authors.lastname: Yang
authors.forename: Ming
authors.initials: M
authors.lastname: Zhao
authors.forename: Yang
authors.initials: Y
authors.lastname: Yu
authors.forename: ShengXi
authors.initials: S
authors.lastname: Li
authors.forename: QianPeng
authors.initials: Q
authors.lastname: Zhang
authors.forename: XiuHua
authors.initials: X
authors.lastname: Yuan