3D Diffractive Focusing THz of In-Plane Surface Plasmon Polarition Waves

Demonstrated that analog of diffractive and refractive 3D optics in free space can be developed to manipulate surface waves such as surface plasmon polaritons (SPPs). It has been shown that an air-gap control of a floating dielectric block can generate the dynamic phase and amplitude modulation of the SPP transmission coefficient. Unlike conven-tional bulk optics, the nano-scale surface optics for SPP processing contains several unexpected and interesting fea-tures in addition to the physical features described. Dynamic plasmonic information processing on the nano-scale using air-gap control may be an effective mechanism for building a dynamic plasmonic information processing system