▎ 摘　　要

NOVELTY - Obtaining frequency-modulated polarization laser using graphene nanoribbon array grating involves using clean Au (111) single crystal adjacent step surface as substrate to prepare anatomically accurate graphene nanoribbon array by bottom-up method, transferring graphene nanoribbon array to substrate to make grating, using polarization Raman scattering spectroscopy to calibrate y-axis and x-axis of grating, irradiating laser on grating, and converging Raman scattering light. USE - The method is used for obtaining frequency-modulated polarization laser using graphene nanoribbon array grating. ADVANTAGE - The method can modulate laser of any frequency, is convenient to use, does not require additional power supply grating modulated laser, adopts atomic-level precise graphene nanoribbons, and modulates laser frequency based on Raman scattering of nanoribbons to obtain laser with narrow bandwidth.