Far-infrared single-spectrum signal detector based on meta-material

The utility model discloses a far-infrared single-spectrum signal detector based on a meta-material, which comprises the components of: a substrate layer, an N-type gallium arsenide layer, a silicon dioxide layer, a meta-material layer, an ohmic electrode and Schottky electrodes; wherein the substrate layer, the N-type gallium arsenide layer, the silicon dioxide layer, the meta-material layer, the ohmic electrode and the Schottky electrodes are successively arranged from bottom to top. The meta-material layer is a metal open-loop resonance unit array with a periodical micro-nanometer structure. The metal open-loop resonance unit array comprises a pattern and a characteristic dimension parameter thereof. The pattern has a complete absorption characteristic for far-infrared electromagnetic wave. A corresponding electromagnetic wave absorption frequency band can be controlled through changing structure and dimension parameter of the metal open-loop resonance unit. Electromagnetic wave absorption strength of the