Experimental observation of symmetry protected bound state in the continuum in a chain of dielectric disks

Abstract

Existence of bound states in the continuum (BIC) manifests a general wave phenomenon firstly predicted in quantum mechanics in 1929 by J. von Neumann and E. Wigner. Today it is being actively explored in photonics, radiophysics, acoustics, and hydrodynamics. In this paper, we report the first experimental observation of electromagnetic bound state in the radiation continuum in 1D array of dielectric particles. By measurement of the transmission spectra of the ceramic disk chain at GHz frequencies we demonstrate how a resonant state in the vicinity of the center of the Brillouin zone turns into a symmetry-protected BIC with increase the number of the disks. We estimate a number of the disks when the radiation losses become negligible in comparison to material absorption and, therefore, the chain could be considered practically as infinite. The presented analysis is supplemented by measurements of the near fields of the symmetry protected BIC. All measurements are in a good agreement with the results of numerical simulation and analytical model based on tight-binding approximation. The obtained results provide useful guidelines for practical implementations of structures with bound states in the continuum that opens up new horizons for the development of optical and radiofrequency metadevices.

8 pages, 7 figures, Supplemental material

References in corpus (16)

• Asymmetric metasurfaces with high-$Q$ resonances governed by bound states in the continuum
• Resonantly Trapped Bound State in the Continuum Laser
• High-Q supercavity modes in subwavelength dielectric resonators
• Nonradiating Photonics with Resonant Dielectric Nanostructures
• Bound states in the continuum and Fano resonances in the strong mode coupling regime
• Observation of optical vortices in momentum space
• Bloch bound states in the radiation continuum in a periodic array of dielectric rods
• Strong coupling between excitons in transition metal dichalcogenides and optical bound states in the continuum
• Formation Mechanism of Guided Resonances and Bound States in the Continuum in Photonic Crystal Slabs
• Quasi Bound States in the Continuum with Few Unit Cells of Photonic Crystal Slab
• Nonlinear Bound States in the Continuum in One-Dimensional Photonic Crystal Slab
• Light trapping above the light cone in one-dimensional array of dielectric spheres
• Light enhancement by quasi-bound states in the continuum in dielectric arrays
• Bound states in the continuum with high orbital angular momentum in a dielectric rod with periodically modulated permittivity
• Light guiding above the light line in arrays of dielectric nanospheres
• Guided Modes in the Plane Array of Optical Waveguides

Cited by in corpus (25)

• Asymmetric metasurfaces with high-$Q$ resonances governed by bound states in the continuum
• Metasurfaces with maximum chirality empowered by bound states in the continuum
• Multipolar origin of bound states in the continuum
• Refractive index sensing with optical bound states in the continuum
• Bound states in the continuum in photonic structures
• Bound States in the Continuum in Compact Acoustic Resonators
• Bound states in the continuum in fiber Bragg gratings
• Observation of an accidental bound state in the continuum in a chain of dielectric disks
• Bound States in the Continuum in Multipolar Lattices
• Interaction between coaxial dielectric disks enhances the Q-factor
• Desktop laboratory of bound states in the continuum in metallic waveguide with dielectric cavities
• Bound states in the continuum in a two-channel Fano-Anderson model
• Evolution of the resonances of two parallel dielectric cylinders with distance between them
• Bound modes in the continuum based phononic waveguides
• On the robustness of bound states in the continuum in waveguides with lateral leakage channels
• Vertical routing of spinning dipoles radiation from a chiral metamembrane
• Engineering of the extremely high Q factor in two subwavelength dielectric resonators
• Meta-optics and bound states in the continuum
• Radial bound states in the continuum for polarization-invariant nanophotonics
• Giant resonant enhancement of optical binding of dielectric particles
• Luminescence Enhancement in One-Dimensional Mie-Resonant Arrays
• Frequency perturbation theory of bound states in the continuum in a periodic waveguide
• Bound states in the continuum in cuprous oxide quantum wells
• Bound states in the continuum and Fano resonances in subwavelength resonator arrays
• Singular value decomposition to describe bound states in the continuum in periodic metasurfaces