Hybridization between nanocavities for a polarimetric color sorter at the sub-micron scale

摘要: Metallic hole arrays have been recently used for color generation and filtering due to their reliability tunability. However, is still limited several microns. Understanding the interaction between individual elements of whole nanostructure may push resolution sub-micron level. Herein, we study hybridization silver nanocavities in order obtain active at micron scale. To do so, use five identical triangular cavities which are separated by hundreds nanometers from each other. By tuning either distance or optical polarization state incoming field, transmitted light through actively enhanced specific frequencies. Consequently, a rainbow colors observed scale unit. The reason this that metallic surface plays vital role contributes higher frequency modes. Cathodoluminescence measurements confirmed assumption revealed these act as unified entity surrounded propagated plasmons. In such plasmonic structures, multi-color can be accomplished open possibility improve high-quality pixel fabrication.