Modular Design for Versatile Broadband Polarizing Metasurfaces with Freely Switching Functions

Author:

Song Kun12ORCID,Gong Xuejian1,Cao Yunshan1,Chen Qiang1,Ji Ruonan12,Liu Yahong12,Zhao Xiaopeng1,Zhou Jiangfeng3,Navarro‐Cía Miguel45ORCID

Affiliation:

1. Department of Applied Physics School of Physical Science and Technology Northwestern Polytechnical University Xi'an 710129 China

2. Shaanxi Basic Discipline (Liquid Physics) Research Center School of Physical Science and Technology Northwestern Polytechnical University Xi'an 710129 China

3. Department of Physics University of South Florida Tampa FL 33620 USA

4. School of Physics and Astronomy University of Birmingham Birmingham B15 2TT United Kingdom

5. Department of Electronic, Electrical, and Systems Engineering University of Birmingham Birmingham B15 2TT United Kingdom

Abstract

AbstractPolarization is a fundamental property of electromagnetic waves that plays a key role in many physical phenomena and applications. Schemes to manipulate it are revisited with the emergence of metasurfaces, which have brought multi‐functionalities straightforwardly. However, this has come at the expense of design complexity that relies strongly on field theory. Here, an ingenious strategy of modular design is proposed to construct subwavelength multifunctional polarization control devices. Chiral metasurfaces with different handedness are first proposed and regarded as modules. The versatile polarization controller can thus be obtained with the combination of different modules. These experiments demonstrate that the well‐designed polarization controller possesses reconfigurable functionality, and various broadband polarization and amplitude regulation functions with high efficiency including arbitrary linear polarization rotation, asymmetric transmission effect, neutral‐density‐like filter, polarization beam splitter, etc., can be readily realized just by changing the cascaded modules. The physical mechanisms of the versatile polarization controller and chiral metasurface modules are both guaranteed by the Fabry–Pérot‐like resonances, which are theoretically verified via the transfer matrix method. It is envisioned that the modular concept will be of great benefit to designing compact multifunctional polarization controllers.

Funder

National Natural Science Foundation of China

Publisher

Wiley

Subject

Electrochemistry,Condensed Matter Physics,Biomaterials,Electronic, Optical and Magnetic Materials

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