Generation and Tunability of Supermodes in Tamm Plasmon Topological Superlattices
arXiv:2107.04266 · doi:10.1021/acsphotonics.1c00507
Abstract
In this study, we propose and experimentally demonstrate a novel kind of Tamm plasmon topological superlattice (TTS) by engineering Tamm photonic crystals (TPCs) belonging to a different class of topology. Utilizing specifically designed double-layer metasurfaces etching on planar multilayered photonic structures, the TPC that supports the Tamm plasmon photonic bandgap is realized in the visible regime. Through the coupling of topological interface states existing between different TPCs, hybrid topological interface states of Tamm plasmon, called supermodes, are obtained that can be fully described by a tight-binding model. Meanwhile, we can achieve a tunable bandwidth of supermodes via varying the etching depth difference between double-layer metasurfaces. We show that the bandwidth decreases with the increase of etching depth difference, resulting in a nearly flat dispersion of supermodes with strong localization regardless of excitation angles. All the results are experimentally verified by measuring angular-resolved reflectance spectra. The TTS and supermodes proposed here open a new pathway for the manipulation of Tamm plasmons, based on which various promising applications such as integrated photonic devices, optical sensing, and enhancing light-matter interactions can be realized.
arXiv comment23 pages, 4 figures. ACS Photonics (online)
References in corpus (23)
- Topological Photonics
- Topological Photonics
- Quantum Plasmonics
- How to face the loss in plasmonics and metamaterials
- Lasing in topological edge states of a 1D lattice
- Surface Impedance and Bulk Band Geometric Phases in One-Dimensional Systems
- Direct Observation of Valley-polarized Topological Edge States in Designer Surface Plasmon Crystals
- A topological source of quantum light
- Observation of optical vortices in momentum space
- Plasmon Weyl Degeneracies in Magnetized Plasma
- Topological magnetoplasmon
- Topological Edge Plasmon Modes between Diatomic Chains of Nanoparticles
- Measurement of the Zak phase of photonic bands through the interface states of metasurface/photonic crystal
- Non-Hermitian gauged topological laser arrays
- Induced transparency by coupling of Tamm and defect states in tunable terahertz plasmonic crystals
- Topological engineering of interfacial optical Tamm states for highly-sensitive near-singular-phase optical detection
- Quantifying the robustness of topological slow light
- Simultaneous Multi-frequency Topological Edge Modes between One-dimensional Photonic Crystals
- Tamm plasmon Photonic Crystals : from Bandgap Engineering to Defect Cavity
- Topological multiband photonic superlattices
- Observing and Controlling a Tamm Plasmon at the Interface with a Metasurface
- Topological plasmons in dimerized chains of nanoparticles: robustness against long-range quasistatic interactions and retardation effects
- Polaritonic Tamm states induced by cavity photons