ArticleNature communications2024
Compact terahertz harmonic generation in the Reststrahlenband using a graphene-embedded metallic split ring resonator array.
Article in Nature communications, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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Who cites it
8 citing papers in PubMed.
- Ultrasensitive Tunable Terahertz Sensor via Critical Coupling-Enhanced Fano Resonance.Nanophotonics (Berlin, Germany) · 2026Article
- Electrically driven heterostructured far-infrared wire lasers with integrated graphene plasmons.Nature nanotechnology · 2025Article
- Extended spectral response of cavity-based terahertz photoconductive antennas and coherent detection of quantum cascade lasers.Nanophotonics (Berlin, Germany) · 2025Article
- Second and third harmonic generation in topological insulator-based van der Waals metamaterials.Light, science & applications · 2025Article
- Tracing terahertz plasmon polaritons with a tunable-by-design dispersion in topological insulator metaelements.Light, science & applications · 2025Article
- Roadmap for Photonics with 2D Materials.ACS photonics · 2025Review
- Terahertz frequency electronics and photonics: materials and devices.Philosophical transactions. Series A, Mathematical, physical, and engineering sciences · 2025Article
- Terahertz near-field microscopy of metallic circular split ring resonators with graphene in the gap.Scientific reports · 2024Article
Corrections and comments
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Authors and funding
12 authors.
Funding
Abstract
Harmonic generation is a result of a strong non-linear interaction between light and matter. It is a key technology for optics, as it allows the conversion of optical signals to higher frequencies. Owing to its intrinsically large and electrically tunable non-linear optical response, graphene has been used for high harmonic generation but, until now, only at frequencies < 2 THz, and with high-power ultrafast table-top lasers or accelerator-based structures. Here, we demonstrate third harmonic generation at 9.63 THz by optically pumping single-layer graphene, coupled to a circular split ring resonator (CSRR) array, with a 3.21 THz frequency quantum cascade laser (QCL). Combined with the high graphene nonlinearity, the mode confinement provided by the optically-pumped CSRR enhances the pump power density as well as that at the third harmonic, permitting harmonic generation. This approach enables potential access to a frequency range (6-12 THz) where compact sources remain difficult to obtain, owing to the Reststrahlenband of typical III-V semiconductors.
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Registered trials
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