Summary
Real-Time Hyperspectral Terahertz Imaging
[Enlarge image]Plasmonic photoconductive terahertz focal-plane array captures hyperspectral, time-resolved terahertz images, and a pixel-super-resolution neural network processes these images to reconstruct a higher-resolution image.
Terahertz waves offer unique functionalities for remote sensing, security screening, biomedical imaging, cultural-heritage conservation and industrial quality control because many optically opaque materials are more transparent and possess distinct spectral signatures in the terahertz frequency range.1 Among imaging modalities, terahertz time-domain imaging provides some of the most comprehensive information on the hyperspectral, ultrafast temporal, phase and amplitude characteristics of imaged objects. However, the lack of hyperspectral terahertz focal-plane arrays has restricted existing terahertz time-domain imaging systems to mainly single-pixel architectures that require raster scanning, which severely limits the imaging speed and impedes broader adoption in real-world applications.
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