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.