Optical detection slide glass and applicable detection processing method

The invention discloses a light detection slide glass and an applicable detection processing method. Wherein the optical detection slide comprises a substrate layer for transmitting or reflecting terahertz waves; and the metal pattern layer is positioned on the surface of the substrate layer and forms polarization offset reference signal waves under the irradiation of the terahertz waves. The light detection slide glass is used for bearing a sample to be detected; wherein the metal pattern layer comprises a plurality of resonator units, each resonator unit is composed of a plurality of metal resonators in a non-closed shape, and openings of the metal resonators circularly rotate for a circle in the clockwise/anticlockwise direction to complete a period. During the irradiation of the terahertz wave, the light detection slide carrying the sample transmits or reflects the absorption signal wave subjected to polarization offset, and the absorption signal wave is formed after the terahertz wave passes through the