Lying between the infrared and millimeter wave regimes, terahertz waves possess many unique properties, prompting numerous compelling imaging applications, such as non-destructive testing, security screening, biomedical diagnosis, cultural heritage conservation, chemical identification, material characterization, and atmospheric/astrophysics studies. However, many existing terahertz imaging systems require imaging times ranging from tens of minutes to tens of hours due to their single-pixel nature and the requirement for raster-scanning to acquire the image data.
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Source: Phys.org