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Proceedings Paper

Comparative reconstructions of THz spectroscopic imaging for non-destructive testing and biomedical imaging
Author(s): William E. Baughman; David S. Wilbert; Soner Balci; Michael Bolus; Mathieu Baker; Patrick Kung; Seongsin M. Kim; Martin S Heimbeck; Henry O. Everitt
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Paper Abstract

Imaging with electromagnetic radiation in the THz frequency regime, between 0.2 THz and 10 THz, has made considerable progress in recent years due to the unique properties of THz radiation, such as being non-ionizing and transparent through many materials. This makes THz imaging and sensing promising for a plethora of applications; most notably for contraband detection and biomedical diagnostics. Though many methods of generation and detection terahertz radiation exist, in this study we utilize Terahertz Time Domain Spectroscopy (THz TDS) and THz digital holography using a coherent, tunable CW THz source. These methods enable access to both the amplitude and phase information of the traveling THz waves. As a result of the direct time-resolved detection method of the THz electric field, unique spectroscopic information about the objects traversed can be extracted from the measurements in addition to being able to yield intensity imaging contrast. Utilizing such capabilities for THz based imaging can be useful for both screening and diagnostic applications. In this work, we present the principles and applications of several reconstruction algorithms applied to THz imaging and sensing. We demonstrate its ability to achieve multi-dimensional imaging contrast of both soft tissues and concealed objects.

Paper Details

Date Published: 9 May 2012
PDF: 10 pages
Proc. SPIE 8363, Terahertz Physics, Devices, and Systems VI: Advanced Applications in Industry and Defense, 83630W (9 May 2012); doi: 10.1117/12.919627
Show Author Affiliations
William E. Baughman, The Univ. of Alabama (United States)
David S. Wilbert, The Univ. of Alabama (United States)
Soner Balci, The Univ. of Alabama (United States)
Michael Bolus, The Univ. of Alabama (United States)
Mathieu Baker, The Univ. of Alabama (United States)
Patrick Kung, The Univ. of Alabama (United States)
Seongsin M. Kim, The Univ. of Alabama (United States)
Martin S Heimbeck, U.S. Army Aviation and Missile, Research Development & Engineering Ctr. (United States)
Univ. of Alabama in Huntsville (United States)
Henry O. Everitt, U.S. Army Aviation and Missile, Research Development & Engineering Ctr. (United States)


Published in SPIE Proceedings Vol. 8363:
Terahertz Physics, Devices, and Systems VI: Advanced Applications in Industry and Defense
A. F. Mehdi Anwar; Nibir K. Dhar; Thomas W. Crowe, Editor(s)

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