Magnetically controllable metasurface and its application

Abstract

The dynamic control of the metasurface opens up a vital technological approach for the development of multifunctional integrated optical devices. The magnetic field manipulation has the advantages of sub-nanosecond ultra-fast response, non-contact, and continuous adjustment. Thus, the magnetically controllable metasurface has attracted significant attention in recent years. This study introduces the basic principles of the Faraday and Kerr effect of magneto-optical (MO) materials. It classifies the typical MO materials according to their properties. It also summarizes the physical mechanism of different MO metasurfaces that combine the MO effect with plasmonic or dielectric resonance. Besides, their applications in the nonreciprocal device and MO sensing are demonstrated. The future perspectives and challenges of the research on MO metasurfaces are discussed.

Graphical abstract

Keywords

magneto-optical (MO) effect / MO metasurfaces / magnetoplasmonic / nonreciprocal device / MO sensing

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Acknowledgements

The authors acknowledge the financial support from the National Key Research and Development Program of China (No. 2017YFB1002900), Fok Ying-Tong Education Foundation of China (No. 161009), the National Natural Science Foundation of China (Grant No. 61775019), and Beijing Outstanding Young Scientist Program (No. BJJWZYJH01201910007022).

Conflicts of interest

The authors declare no conflict of interest.

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