Plasmonic Fabry-Pérot nanocavity.

  title={Plasmonic Fabry-P{\'e}rot nanocavity.},
  author={Volker J. Sorger and Rupert F Oulton and Jie Yao and Guy Bartal and Xiang Zhang},
  journal={Nano letters},
  volume={9 10},
We experimentally demonstrate a novel, all-plasmonic nanoscopic cavity exhibiting Q-factors up to 200 at visible frequencies. The Fabry-Pérot type resonator uses tall metallic fins that reflect up to 98% of incident surface plasmon to concentrate light within a subwavelength cavity mode. High aspect ratio metal fins, constructed using lithography and electroplating, reduce surface plasmon scattering out of the surface, while a short cavity length reduces the propagation loss. A simple Fabry-P… CONTINUE READING
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