• Corpus ID: 251564850

Metasurface-Based Realization of Photonic Time Crystals

  title={Metasurface-Based Realization of Photonic Time Crystals},
  author={Xu-chen Wang and Mohammad Sajjad Mirmoosa and Viktar S. Asadchy and Carsten Rockstuhl and Shanhui Fan and Sergei A. Tretyakov},
Photonic time crystals are artificial materials whose electromagnetic properties are uniform in space but periodically vary in time. The synthesis of such materials and experimental observa-tion of their physics remain very challenging. In this work, we extend the concept of photonic time crystals to metasurfaces. We demonstrate that time-varying metasurfaces preserve key physical properties of volumetric time crystals, in particular, generating momentum bandgaps for surface and free-space waves… 

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acknowledge support from the Helmholtz program “Materials Systems Engineering

  • (MSE). S. F. also acknowledges the support of MURI grants from the U. S. Air Force Office of Scientific Research (Grant No. FA9550-18-1-0379 and FA9550-21-1-0244). The authors would like to thank Dr. Nam Van Ha and Dr. Linping Feng for helpful discussions on the experiment, and Mr. Quangang Chen and
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