Metasurfaces with bound states in the continuum enabled by eliminating first Fourier harmonic component in lattice parameters

Abstract

Conventional photonic lattices, such as metamaterials and photonic crystals, exhibit various interesting physical properties that are attributed to periodic modulations in lattice parameters. In this study, we introduce novel types of photonic lattices, namely Fourier-component-engineered metasurfaces, that do not possess the first Fourier harmonic component in the lattice parameters. We demonstrate that these metasurfaces support the continuous high-$Q$ bound states near second stop bands. The concept of engineering Fourier harmonic components in periodic modulations provides a new method to manipulate electromagnetic waves in artificial periodic structures.

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Cited by in corpus (2)

• Supercavity Modes in Stacked Identical Mie-resonant Metasurfaces
• Complex Band Structure and Bound States in the Continuum: A Unified Theoretical Framework