Unusual polarizing effect of cylindrical plasmonic holes

• DOI: 10.1364/ol.43.004374
• Publication Date: 2018-09-05T15:04:35Z
• Authors: Matan Revah; Sergey Nechayev; Yuri Gorodetski
• Keywords: Extraordinary optical transmission; Optical vortex; Helicity; Light beam

We observe an unusual polarization state conversion in the light that passes through a cylindrical hole thick metal film. This phenomenon is related to helicity locking of guided mode due plasmonic transverse spin—an intrinsic angular momentum surface waves. show how this effect linked generation vortex inside and can be altered by varying diameter. In addition, total transmission shown partially contributed from direct transmission, which further modify resulting state.