Full-wave third harmonic generation analyses of graphene-based optoelectronic devices

Over the past decades, a few prototype of graphene-based optoelectronic devices have been proposed because of graphene´s remarkable optical and mechanical properties. However, few tools are available for analyzing graphene´s nonlinear optical performance within practical designs, despite its strong third harmonic generation (THG) has drawn intensive attention in theoretical and experimental study. In this work, a full-wave solver is proposed for the THG problem. Based on boundary-integral spectral element solvers, the proposal numerical method shows relatively fast convergence and high accuracy. In addition, as a typical example, several prototypes of graphene-based photodetectors are studied for their THG emission as stored energy.