Related Experiment Video
Updated: Jun 1, 2026

Demonstration of Equal-Intensity Beam Generation by Dielectric Metasurfaces
Published on: June 7, 2019
Higher extinction ratio circular polarizers with hetero-structured double-helical metamaterials
Yang Yu1, Zhenyu Yang, Shengxi Li
1Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, Hube 430074, China.
Abstract:
We have recently shown circular polarizers with the homo-structured double-helical metamaterials, which have broader operation bands than those of the single-helical structures [Opt. Lett. 35, 2588 (2010)]. However, trying to get more operation bands deteriorates the extinction ratio. In this paper, we proposed circular polarizers with hetero-structured double-helical metamaterials. The extinction ratios of these circular polarizers are two times higher than those with homo-structured double-helical metamaterials. Furthermore, we qualitatively explained the phenomenon of the higher extinction ratio from the viewpoint of the interaction between the two helix-wires in a double-helical unit.
Related Concept Videos
Potential Due to a Polarized Object
¹³C NMR: Distortionless Enhancement by Polarization Transfer (DEPT)

