title: Metallic helix array as a broadband wave plate.
abstract: This study demonstrates theoretically and experimentally that a metallic helix array can operate as a highly transparent broadband wave plate in propagation directions perpendicular to the axis of helices. The functionality arises from a special property of the helix array, namely, that two branches of elliptically right-handed and left-handed polarized states are nearly rigidly shifted in frequency and their dispersions are controlled by different mechanisms that can be independently tuned by structural parameters.
authors: Key Laboratory of Advanced Micro-structure Materials, MOE, Department of Physics, Tongji University, Shanghai 200092, China.
authors: Chao
authors: C
authors: Wu
authors: Hongqiang
authors: H
authors: Li
authors: Xing
authors: X
authors: Yu
authors: Fang
authors: F
authors: Li
authors: Hong
authors: H
authors: Chen
authors: C T
authors: CT
authors: Chan