Parametric metasurfaces for amplified up-conversion of electromagnetic waves
arXiv:2503.14857 · doi:10.1063/5.0270946
Abstract
Spatiotemporal metasurfaces, characterized by dynamic variations in both space and time, enable functionalities unattainable with passive metasurfaces. In this study, we propose a novel concept of parametric metasurfaces capable of performing frequency up-conversion and amplification of free-space electromagnetic waves. This functionality is realized through the modulation of variable capacitances embedded in specially designed dual split-ring resonators. We explore various combinations of the pump and incident wave frequencies and investigate different operational regimes of the proposed parametric system. Our theoretical analysis reveals high up-conversion efficiency, with amplification levels exceeding 20 dB through a cascaded process, surpassing the limits set by the Manley-Rowe relations. Moreover, precise control over the phase of the up-converted waves is achieved by tuning the pump phase, paving the way for advanced manipulation of electromagnetic waves. This approach is applicable in the microwave and subterahertz ranges, with potential scalability to higher frequencies through ultrafast modulation techniques.
The following article has been submitted to Applied Physics Letters. After it is published, it will be found at https://pubs.aip.org/aip/apl
References in corpus (15)
- Space-time gradient metasurfaces
- Active metasurfaces: lighting the path to commercial success
- Double-slit time diffraction at optical frequencies
- Metasurface-Based Realization of Photonic Time Crystals
- Serrodyne frequency translation using time-modulated metasurfaces
- Broadband Nonreciprocal Amplification in Luminal Metamaterials
- Full-Duplex Nonreciprocal-Beam-Steering Metasurfaces Comprising Time-Modulated Twin Meta-Atoms
- Full-duplex Reflective Beamsteering Metasurface Featuring Magnetless Nonreciprocal Amplification
- Time-varying Huygens' meta-devices for parametric waves
- Photonic Metamaterial Analogue of a Continuous Time Crystal
- Asymmetric frequency conversion with acoustic non-Hermitian space-time varying metamaterial
- Time-varying metasurfaces for broadband spectral camouflage
- Pure and Linear Frequency Converter Temporal Metasurface
- Parametric Mie resonances and directional amplification in time-modulated scatterers
- Parametric metasurfaces for electromagnetic wave amplification