Bound states in the continuum in photonic structures

Abstract

Bound states in the continuum provide a remarkable example of how a simple problem solved about a century ago in quantum mechanics can drive the research on a whole spectrum of resonant phenomena in wave physics. Due to their huge radiative lifetime, bound states in the continuum have found multiple applications in various areas of physics devoted to wave processes, including hydrodynamics, atomic physics, and acoustics. In this review paper, we present a comprehensive description of bound states in the continuum and related effects, focusing mainly on photonic dielectric structures. We review the history of this area, basic physical mechanisms in the formation of bound states in the continuum, and specific examples of structures supporting such states. We also discuss their possible applications in optics, photonics, and radiophysics.

80 pages, 21 figures

References in corpus (21)

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• High-Q supercavity modes in subwavelength dielectric resonators
• Metasurfaces with maximum chirality empowered by bound states in the continuum
• Electromagnetic multipole theory for optical nanomaterials
• Observation of Dicke Superradiance for Two Artificial Atoms in a Cavity with High Decay Rate
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• Second harmonic generation in phase matched aluminum nitride waveguides
• Electromagnetic bound states in the radiation continuum for periodic double arrays of subwavelength dielectric cylinders
• Coupled-wave formalism for bound states in the continuum in guided-mode resonant gratings
• Observation of an accidental bound state in the continuum in a chain of dielectric disks
• Numerical methods for calculating poles of the scattering matrix with applications in grating theory
• Bound states in the continuum with high orbital angular momentum in a dielectric rod with periodically modulated permittivity
• Robust bound states in the continuum in Kerr microcavity embedded in photonic crystal waveguide
• Polarized bound state in the continuum and resonances with tunable Q-factor in an anisotropic photonic crystal
• Photosensitive chalcogenide metasurfaces supporting bound states in the continuum
• Optical bistability with bound states in the continuum in dielectric gratings
• Multipolar engineering of subwavelength dielectric particles for scattering enhancement