Efficient coupling of light to graphene plasmons by compressing surface polaritons with tapered bulk materials.

  title={Efficient coupling of light to graphene plasmons by compressing surface polaritons with tapered bulk materials.},
  author={Alexey Yu Nikitin and Pablo Alonso-Gonz{\'a}lez and Rainer Hillenbrand},
  journal={Nano letters},
  volume={14 5},
Graphene plasmons promise exciting nanophotonic and optoelectronic applications. Owing to their extremely short wavelengths, however, the efficient coupling of photons to propagating graphene plasmons-critical for the development of future devices-can be challenging. Here, we propose and numerically demonstrate coupling between infrared photons and graphene plasmons by the compression of surface polaritons on tapered bulk slabs of both polar and doped semiconductor materials. Propagation of… 

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