The focusing property of immersed plasmonic nanolenses under radially polarized illumination

The focusing property of immersed plasmonic nanolenses was theoretically studied by a rigorous electromagnetic numerical analysis method. The immersed plasmonic nanolens consists of a through central hole surrounded by a set of concentric slits with a period of plasmonic wavelength. The computational results show that the focusing property of immersed plasmonic nanolenses is, in general, similar t...