Giant and Broadband THz and IR Emission in Drift-biased Graphene-Based Hyperbolic Nanostructures
arXiv:2211.13747 · doi:10.1063/5.0145288
Abstract
We demonstrate that Cherenkov radiation can be manipulated in terms of operation frequency, bandwidth, and efficiency by simultaneously controlling the properties of drifting electrons and the photonic states supported by their surrounding media. We analytically show that the radiation rate strongly depends on the momentum of the excited photonic state, in terms of magnitude, frequency dispersion, and its variation versus the properties of the drifting carriers. This approach is applied to design and realize miniaturized, broadband, tunable, and efficient terahertz and far-infrared sources by manipulating and boosting the coupling between drifting electrons and engineered hyperbolic modes in graphene-based nanostructures. The broadband, dispersive, and confined nature of hyperbolic modes relax momentum matching issues, avoid using electron beams, and drastically enhance the radiation rate - allowing that over 90% of drifting electrons emit photons. Our findings open a new paradigm for the development of solid-state terahertz and infrared sources.
arXiv comment4 figures
References in corpus (16)
- The electronic properties of graphene
- Infrared hyperbolic metasurface based on nanostructured van der Waals materials
- Light-matter interactions with photonic quasiparticles
- Quantum Čerenkov Effect from Hot Carriers in Graphene: An Efficient Plasmonic Source
- Novel hyperbolic metamaterials based on multilayer graphene structures
- Tunable plasmons in ultrathin metal films
- Thermal Hyperbolic Metamaterials
- Controlling Cherenkov angles with resonance transition radiation
- Fizeau Drag in Graphene Plasmonics
- Efficient Fizeau Drag from Dirac electrons in monolayer graphene
- Electric current induced unidirectional propagation of surface plasmon-polaritons
- Negative Landau damping in bilayer graphene
- Quantum Čerenkov Radiation: Spectral Cutoffs and the Role of Spin and Orbital Angular Momentum
- Current-induced birefringent absorption and non-reciprocal plasmons in graphene
- Non-Reciprocal and Collimated Surface Plasmons in Drift-biased Graphene Metasurfaces
- Experimental demonstration of tunable graphene hyperbolic metamaterial