Highly tunable hybrid metamaterials employing split-ring resonators strongly coupled to graphene surface plasmons
arXiv:1501.05490 · doi:10.1038/ncomms9969
Abstract
Metamaterials and plasmonics are powerful tools for unconventional manipulation and harnessing of light. Metamaterials can be engineered to possess intriguing properties lacking in natural materials, such as negative refractive index. Plasmonics offers capabilities to confine light in subwavelength dimensions and to enhance light-matter interactions. Recently,graphene-based plasmonics has revealed emerging technological potential as it features large tunability, higher field-confinement and lower loss compared to metal-based plasmonics. Here,we introduce hybrid structures comprising graphene plasmonic resonators efficiently coupled to conventional split-ring resonators, thus demonstrating a type of highly tunable metamaterial, where the interaction between the two resonances reaches the strong-coupling regime. Such hybrid metamaterials are employed as high-speed THz modulators, exhibiting over 60% transmission modulation and operating speed in excess of 40 MHz. This device concept also provides a platform for exploring cavity-enhanced light-matter interactions and optical processes in graphene plasmonic structures for applications including sensing, photo-detection and nonlinear frequency generation.
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- Theory of the strongly nonlinear electrodynamic response of graphene: A hot electron model
- Gigahertz optomechanical modulation by split-ring-resonator nanophotonic meta-atom arrays
- Tunable Graphene Split-Ring Resonators
- Tailored nano-electronics and photonics with two-dimensional materials at terahertz frequencies
- Engineering THz-frequency light generation, detection and manipulation through graphene
- Multielectron Ground State Electroluminescence
- Effect of retardation on the frequency and linewidth of plasma resonances in a two-dimensional disk of electron gas
- Nanoscale Terahertz Conductivity and Ultrafast Dynamics of Terahertz Plasmons in Periodic Arrays of Epitaxial Graphene Nanoribbons
- Second harmonic generation and third harmonic generation in topological insulator-based van der Waals metamaterials