▎ 摘　　要

NOVELTY - The utility model claims a high-efficiency super-reflecting mirror based on graphene super-surface focus adjustable, the super-reflecting mirror comprises a three-layer structure, from up to down orderly is graphene super-surface layer, silicon dioxide medium layer and a metal substrate layer; wherein a bias voltage device is provided between the graphene super-surface layer and the metal substrate layer, for changing the Fermi energy of the graphene; by changing the rotating angle of the etched elliptical aperture on the graphene super-surface layer; controlling the phase of the reflected wave; the super-reflector can realize efficient reflection focusing effect; on the basis, changing the frequency of the incident terahertz wave, obtaining the focusing condition of different focal length corresponding to different frequencies, realizing broadband focusing and dynamic control of the super-reflecting mirror. The super-reflecting mirror of the utility model not only has high reflectivity performance of 78 %, but also has adjustable focal length, broadband focusing and off-axis focusing performance, flexible and adjustable control, the utility value is higher, and the application is wider.