Curved Gratings as Plasmonic Lenses for Linearly Polarised Light

  title={Curved Gratings as Plasmonic Lenses for Linearly Polarised Light},
  author={Alireza Maleki and Thanh Phong Vo and Antoine Hautin and James E. Downes and David Coutts and Judith M. Dawes},
The ability of curved gratings as sectors of concentric circular gratings to couple linearly polarised light into focused surface plasmons is investigated by theory, simulation, and experiment. The experimental and simulation results show that increasing the sector angle of the curved gratings decreases the width of the lateral distribution of surface plasmons resulting in focusing of surface plasmons, which is analogous to the behaviour of classical optical lenses. We also show that two faced… 

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