Graphene nanophotonics: from fundamental to optoelectronic applications

With unique possibilities for controlling light in nanoscale devices, graphene has opened new perspectives to the nanophotonics community with potential applications in metamaterials, modulators, photodetectors, and sensors. After having a short introduction of the Technical University of Denmark and Department of Photonic Engineering, I will firstly give a brief overview of recent activities/highlights in our group, e.g., advanced theory for investigating light-matter interactions at the nanoscale, electron spectroscopy to probe quantum plasmonics, plasmonics laser color printing, and graphene for optoelectronic applications. Then, I will mainly discuss how to push graphene plasmons to the near-infrared region and how to explore graphene for optoelectronic applications. I will present our recent results on graphene based silicon ring-resonator modulators, graphene plasmonic waveguide modulators, and high-energy-efficiency graphene microheats with the aid of slow-light effect arisen from the photonic crystal waveguide