TERAHERTZ EMISSION CONVERTER (VERSIONS) Russian patent published in 2012 - IPC H03D7/00 

FIELD: electricity.

SUBSTANCE: invention is related to converter of terahertz radiation into infrared radiation (which can be registered by available infrared receivers) having high sensitivity threshold to terahertz radiation, high spatial resolution, sensitivity to radiation polarisation, small response time. Converter is made as ultrathin (at least 50 times less than wave length of terahertz radiation) multilayer structure based on dielectric layer. Metallised layout forming frequency-selective surface (FSS) is located from side of terahertz radiation. On the other side of dielectric layer there is continuous layer with metal conductivity; on top of it there is a thin layer of material having high radiation efficiency in infrared range (greyness coefficient is close to one). There is another version for converter when on the other side of dielectric layer for terahertz radiation resonance absorber the second dielectric layer is applied on top of the layer with metal conductivity; metallised layout is formed at the second dielectric layer thus forming the second frequency-selective surface.

EFFECT: possibility of real time measurements for intensity of electromagnetic radiation in terahertz range with spatial and polarisation resolution.

7 cl, 2 dwg