Method and apparatus for terahertz imaging
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United States of America Patent
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Jan 20, 1998
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N/A
app pub date -
Sep 10, 1996
filing date -
Feb 15, 1995
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Abstract
Certain material and objects can be characterized by a frequency-dependent absorption, dispersion, and reflection of terahertz transients in signals which pass illuminate the material or object. The present terahertz imaging system analyses that frequency dependence in the time-domain by collecting that transmitted signal propagating through the object and then processing the information contained in those signals for every point or 'pixel' on that object. This is a non-invasive imaging technique that is capable of differentiating between different materials, chemical compositions, or environments.
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