Solid-state magnetometer capable of efficiently exciting NV color center and preparation method of solid-state magnetometer

The invention relates to a solid-state magnetometer capable of efficiently exciting an NV color center and a preparation method of the solid-state magnetometer, and belongs to the technical field of preparation of solid-state magnetometers. According to the solid-state magnetometer, the focusable Fresnel zone plate S1 is adopted to replace a traditional objective lens so as to achieve collimation and focusing of excitation laser, and the focal length of the solid-state magnetometer can be adjusted through electric control; meanwhile, a super-surface structure S3 is manufactured on the surface of the diamond with the NV color center, so that further concentration of microwave energy is achieved; in addition, an inclined plane is formed on the side wall of the diamond through an M/NEMS method, and meanwhile, a composite film system structure is plated, so that high reflection of fluorescence is realized, and meanwhile, a high-reflection film is effectively protected. Therefore, the NV color center in the solid-