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Terahertz imaging for near field objects

  • US 20060054824A1
  • Filed: 01/18/2005
  • Published: 03/16/2006
  • Est. Priority Date: 01/16/2004
  • Status: Active Grant
First Claim
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1. Terahertz imaging apparatus for examining a region of interest to determine the presence of a specified composition, the apparatus comprising:

  • a detector comprising an interferometric array of detector elements arranged at a plurality of spaced apart points on a first surface for detecting terahertz signals emanating from the region of interest, the first surface having a curvature that substantially matches a wave front curvature of the terahertz signals incident thereon from the region of interest; and

    a signal processor for converting detected terahertz signals from the detector into an image of the region of interest from which the presence of the specified composition is determinable.

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