Metamaterials for Enhancing Reflection and Transmission

Different metamaterial compositions constructed with high density core-shell nanoresonators were studied to enhance the optical response and near-field confinement of the system. The reflectance was enhanced by doping the core of the core-shell or the additional gain shell embedding the passive plasmonic nanoresonator with a laser dye. By varying the metamaterial properties either enhanced reflection or enhanced transmission was achievable.