Symmetric metasurface with dual band polarization-independent high-Q resonances governed by symmetry-protected BIC

In this Letter, we propose a symmetric metasurface composed of single-sized amorphous-silicon (a-Si) cuboids tetramer clusters that support two resonances with opposite symmetry, i.e., in-plane magnetic dipole (MD) resonance and in-plane toroidal dipole (TD) resonance governed by symmetry-protected...

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Veröffentlicht in:	Optics letters 2021-08, Vol.46 (16), p.4049-4052
Hauptverfasser:	Cai, Yuepei, Huang, Yong, Zhu, Keyong, Wu, Huihai
Format:	Artikel
Sprache:	eng
Schlagworte:	Amorphous silicon Electric power distribution Magnetic dipoles Magnetic resonance Metasurfaces Polarization Resonance scattering Symmetry
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