▎ 摘　　要

NOVELTY - The method involves utilizing a field effect for electrical doping process of a graphene. The field effect of a grid electrode is injected to carriers for a single-layer graphene to adjust a chemical potential of the graphene. A transition passage of nonlinear optical process is performed on the graphene. A first-order nonlinear optical effect and a second-order nonlinear optical effect are controlled to the graphene by adjusting the chemical potential, where the first-order nonlinear optical effect comprises first harmonic process, Kerr effect and four-wave mixing process and the second- order nonlinear optical effect comprises secondary harmonic process and sum frequency and difference frequency process. USE - Electrical method for controlling a graphene nonlinear optical effect. ADVANTAGE - The method enables enhancing and controlling a second-order, a third-order and a higher-order nonlinear optical effect of the graphene, providing convenient, reliable and effective electrical control for an application of the graphene in the field effect of the non-linear optical. DESCRIPTION OF DRAWING(S) - The drawing shows a front view of a grid electrode. '(Drawing includes non-English language text)'