Anisotropic meta-mirror for achromatic electromagnetic polarization manipulation

By Mingbo Pu, Po Chen, Yanqin Wang, Zeyu Zhao, Cheng Huang, Changtao Wang, Xiaoliang Ma, Xiangang Luo. 2013

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Polarization states are of particular importance for the manipulation of electromagnetic waves. Here, we proposed the design and experimental demonstration of anisotropic meta-mirror for achromatic polarization tuning. It is demonstrated that linear polarized wave can be achromatically transformed to its cross-polarization state or to arbitrary circular polarization after its reflection from the mirror. Microwave experiments verified that the fraction bandwidth for 90% transformation efficiency can be larger than 3:1. Furthermore, by utilizing photoinduced carrier generation in silicon, a broadband tunable circular polarizer is demonstrated in the terahertz regime.

Subfields: Aerospace Engineering, Biomedical Engineering, Electronic, Optical and Magnetic Materials

View Paper: https://www.semanticscholar.org/paper/88735338d9e487de02e16844c1f1325b2bc7909f