Static terahertz imaging at a distance for concealed weapon detection

Using a high-powered pulsed terahertz source and electro-optic detection, a method for and examples of static THz imaging of targets at a distance of greater than 3 meters (no THz component is closer than 3 m from the target) are presented. The THz signal in all 200 times 200 pixels of an image are...

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Bibliographic Details
Main Authors: Campbell, M.B., DeWitt, M.J., Heilweil, E.J.
Format: Conference Proceeding
Language:English
Subjects:
Concealed weapons detection
Gallium arsenide
Laser beams
Optical imaging
Optical pulse generation
Optical pulses
Optical scattering
Pixel
Principal component analysis
Standoff terahertz imaging
Submillimeter wave imaging
Terahertz focal plane array
Weapons
Zinc compounds
Online Access:Request full text
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Description
Summary:Using a high-powered pulsed terahertz source and electro-optic detection, a method for and examples of static THz imaging of targets at a distance of greater than 3 meters (no THz component is closer than 3 m from the target) are presented. The THz signal in all 200 times 200 pixels of an image are collected simultaneously to generate THz imagery of targets over the 0.3 THz to 2.0 THz frequency range. The field of view, restricted by a simple single lens optical system, is approximately 10 cm across with sub-millimeter spatial resolution. This capability demonstrates the viability of static electro-optic THz imaging without the need to raster-scan a scene to generate an image.
ISSN:2162-2027
DOI:10.1109/ICIMW.2007.4516665