Research Progress of Terahertz Single-Pixel Imaging and Its Dynamic Mask Materials

Terahertz imaging technology has shown great application potential in the fields of safety inspection and medical imaging. Compared with traditional mechanical scanning imaging and focal plane array imaging, single-pixel imaging has the advantages of simple system, fast imaging speed, and low cost. By combining spatial light modulation technology, the two-dimensional terahertz spatial information of the target can be reconstructed by using the association algorithm. Starting from the basic concept and development process of terahertz single-pixel imaging, this paper focuses on the principle, materials, development applications, and possible challenges of coding masks in single-pixel imaging.