114 / 2019-03-29 18:48:35

Perfect absorption in graphene-outside-cavity photonic crystal resonator

Perfect absorption; photonic crystal; graphene monolayer; graphene multilayer; FP resonance

Perfect absorption is achieved in photonic crystal resonator depending on one graphene film outside cavity. Based on Fabry-Perot (FP) resonance, the light-graphene interaction is enhanced. At critical coupling, all incident light is absorbed. The graphene monolayer and multilayer are proven to be valid, and the approaching perfect absorption can be kept in wide-angle range.