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Review of Terahertz Tomography Techniques

Abstract : Terahertz and millimeter waves penetrate various dielectric materials, including plastics, ceramics, crystals, and concrete, allowing terahertz transmission and reflection images to be considered as a new imaging tool complementary to X-Ray or Infrared. Terahertz imaging is a well-established technique in various laboratory and industrial applications. However, these images are often two-dimensional. Three-dimensional, transmission-mode imaging is limited to thin samples, due to the absorption of the sample accumulated in the propagation direction. A tomographic imaging procedure can be used to acquire and to render three-dimensional images in the terahertz frequency range, as in the optical, infrared or X-ray regions of the electromagnetic spectrum. In this paper, after a brief introduction to two dimensional millimeter waves and terahertz imaging we establish the principles of tomography for Terahertz Computed tomography (CT), tomosynthesis (TS), synthetic aperture radar (SAR) and time-of-flight (TOF) terahertz tomography. For each technique, we present advantages, drawbacks and limitations for imaging the internal structure of an object.
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Submitted on : Tuesday, April 1, 2014 - 4:10:02 PM
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Jean Paul Guillet, Benoît Recur, Louis Frederique, Bruno Bousquet, Lionel Canioni, et al.. Review of Terahertz Tomography Techniques. Journal of Infrared, Millimeter and Terahertz Waves, Springer Verlag, 2014, 35 (4), pp.382-411. ⟨10.1007/s10762-014-0057-0⟩. ⟨hal-00968839⟩



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