Reflection compensation mediated by electric and magnetic resonances of all-dielectric metasurfaces

Abstract

All-dielectric nanostructures have recently emerged as a promising alternative to plasmonic devices, as they also possess pronounced electric and magnetic resonances and allow effective light manipulation. In this work, we study optical properties of a composite structure that consists of a silicon nanoparticle array (metasurface) and high-index substrate aiming at clarifying the role of substrate on reflective properties of the nanoparticles. We develop a simple semi-analytical model that describes interference of separate contributions from nanoparticle array and the bare substrate to the total reflection. Applying this model, we show that matching the magnitudes and setting the π-phase difference of the electric and magnetic dipole moments induced in nanoparticles, one can obtain a suppression of reflection from the substrate coated with metasurface. We perform numerical simulations of sphere and disk nanoparticle arrays for different permittivities of the substrate. We find full agreement with the semi-analytical results, which means that the uncoupled-element model adequately describes nanostructure reflective properties, despite the effects of induced bi-anisotropy. The model explains the features of the reflectance spectrum, such as a number of dips and their spectral positions, and show why it may not coincide with the spectral positions of Mie resonances of the single nanoparticles forming the system. We also address practical aspects of the antireflective device engineering: we show that the uncoupled-element model is applicable to the structures on top of silicon substrates, including lithographically defined nanopillars. The reflectance suppression from nanoparticle array on top of the silicon substrate can be achieved in a broad spectral range with disordered nanoparticle array and for a wide range of incidence angles.

References in corpus (9)

• High-efficiency light-wave control with all-dielectric optical Huygens' metasurfaces
• Directional visible light scattering by silicon nanoparticles
• Magnetic light
• Generalized Brewster-Kerker effect in dielectric metasurfaces
• Resonant Raman Scattering from Silicon Nanoparticles Enhanced by Magnetic Response
• Plasmonic and silicon spherical nanoparticle anti-reflective coatings
• Laser fabrication of crystalline silicon nanoresonators from an amorphous film for low-loss all-dielectric nanophotonics
• All-dielectric reciprocal bianisotropic nanoparticles
• Homogenization of metasurfaces formed by random resonant particles in periodical lattices

Cited by in corpus (20)

• Resonant lattice Kerker effect in metasurfaces with electric and magnetic optical responses
• Electric quadrupole and magnetic dipole coupling in plasmonic nanoparticle arrays
• Invisibility and perfect absorption of all-dielectric metasurfaces originated from the transverse Kerker effect
• Lattice effect on electric and magnetic resonance overlap in periodic array
• Lattice resonances under oblique light incidence on nanoparticle array
• Nanoparticle lattices with electric and magnetic resonances [Prospective]
• Resonant transmission suppression in high-index nanoparticle arrays
• Wide-Angle Invisible Dielectric Metasurface Driven by Transverse Kerker Scattering
• All-optical scattering control in an all-dielectric quasi-perfect absorbing Huygens metasurface
• Directional emission of down-converted photons from a dielectric nano-resonator
• Multipole analysis of substrate-supported dielectric nanoresonator arrays with T-matrix method
• Constructive and Destructive Interference of Kerker-type Scattering in an Ultra-thin Silicon Huygens Metasurface
• Reflection suppression by the hyperbolic-medium antennas and silicon particles
• Lattice Kerker effect in the hexagonal boron nitride antenna array
• Inverse design of Mie resonators with minimal backscattering
• Multipole Born series approach to light scattering by Mie-resonant nanoparticle structures
• Supercavity Modes in Stacked Identical Mie-resonant Metasurfaces
• Absorbance Enhancement of Monolayer MoS${}_2$ in a Perfect Absorbing System
• Luminescence Enhancement in One-Dimensional Mie-Resonant Arrays
• Active Tuning of Resonant Lattice Kerker Effect