Generating Surface Plasmon Polariton Airy Beam with Dielectric Relief Holographical Structures

Abstract

Surface plasmon polariton (SPP) Airy beams are very attractive in theory and applications. We propose a new method to design dielectric relief holographical structures for controlling the SPP wave propagations and generating SPP Airy beams on metal surface. In the dielectric relief holography (DRH) method, both phase and amplitude are considered. The thickness of designed dielelctric films is proportional to the intensity of SPPs interference in holography. The films designed by the DRH method are coated on metal surface and can control SPPs propagation effectively. The complicated Airy beams can also be generated through the films designed by the method. The finite difference time domain (FDTD) method is used to test the functionalities of the designed structures and find the optimal parameters. The structures designed by the DRH method can be manufactured with traditional die or corroding methods. The investigation on the method extends SPP device manufacture methods, and therefore may open up the possibility for mass industrial manufacture of plasmonic devices.