Enhanced Surface Plasmon Resonance by Deposition of Graphene Monolayer on Metallic Grating Structures

摘要

Surface plasmon resonance (SPR) phenomena have attracted considerable attention because of the strong enhancement and confinement ofelectric fields near metal surfaces. Recently, further enhancement of surface plasmon-electric field was theoretically shown by the interactionbetween graphene and plasmonic metals. In this work, we designed and fabricated graphene/metallic grating structures, which exhibitedfurther enhancement of the electric field due to the interaction between grating-coupled surface plasmon and graphene layers. The enhancedelectric field properties were studied by surface plasmon spectroscopy and surface plasmon enhanced fluorescence measurements.