Bound States in the Continuum in Bilayer Photonic Crystal with TE-TM Cross-Coupling
arXiv:1906.06102 · doi:10.1103/PhysRevB.98.214101
Abstract
Bound states in the continuum (BICs) in photonic crystals represent the unique solutions of wave equations possessing an infinite quality-factor. We design a type of bilayer photonic crystal and study the influence of symmetry and coupling between TE and TM polarizations on BICs. The BIC modes possess symmetry in the x-y plane while the mirror-flip symmetry in the z-direction is broken, and they provide selective coupling into different layers by varying frequency. The enhanced TE-TM coupling due to broken mirror-flip symmetry in the z-direction gives rise to high-Q factor BIC states with unique spatial characteristics. We show the emergence of such BIC states even in the presence of coupling between the TE- and TM-like modes, which is different from the existing single polarization BIC models. We propose to study BICs in multilayer systems, and the results may be helpful in designing photonic settings to observe and manipulate BICs with various symmetries and polarizations for practical applications.
arXiv comment15 pages, 6 figures
References in corpus (20)
- Magic-angle graphene superlattices: a new platform for unconventional superconductivity
- Correlated Insulator Behaviour at Half-Filling in Magic Angle Graphene Superlattices
- Moire bands in twisted double-layer graphene
- Resonantly Trapped Bound State in the Continuum Laser
- Topological nature of bound states in the radiation continuum
- Demonstration of conditional gate operation using superconducting charge qubits
- Strain Solitons and Topological Defects in Bilayer Graphene
- Tunable Moiré Bands and Strong Correlations in Small-Twist-Angle Bilayer Graphene
- Valley Chern Numbers and Boundary Modes in Gapped Bilayer Graphene
- Analytical Perspective for Photonic Bound States in the Continuum in Photonic Crystal Slabs
- How to make a bilayer exciton condensate flow
- Optomechanical coupling in a two-dimensional photonic crystal defect cavity
- Even denominator fractional quantum Hall state in bilayer graphene
- Coupled-wave model for square-lattice photonic-crystal lasers with TE polarization -- a general approach
- Bound States in the Continuum on Periodic Structures: Perturbation Theory and Robustness
- Floquet bound states in the continuum
- Localization in Correlated Bi-Layer Structures: From Photonic Cristals to Metamaterials and Electron Superlattices
- Local and Global Screening Properties of Graphene Revealed through Landau Level Spectroscopy
- A roundtrip matrix method for calculating the leaky resonant modes of open nanophotonic structures
- Numerical Investigation of Vertical Cavity Lasers with Subwavelength Gratings Using the Fourier Modal Method
Cited by in corpus (6)
- Topological photonic crystals: physics, designs and applications
- Magic-angle Bilayer Phononic Graphene
- A perspective of twisted photonic structures
- Polarization-based branch selection of bound states in the continuum in dielectric waveguide modes anti-crossed by a metal grating
- Intrinsic Superflat Bands in General Twisted Bilayer Systems
- Singular value decomposition to describe bound states in the continuum in periodic metasurfaces