Design and Implementation of a Terahertz (THz) Tomography System

Report No. ARL-TR-8787
Authors: Geoffrey Xiao, Daniel Shreiber, and Carli Marsico
Date/Pages: September 2019; 15 pages
Abstract: Tomography is an imaging technique that allows for the reconstruction of the internal structure of objects. Conventional magnetic resonance imaging (MRI) and X-ray computed tomography (CT) scans use tomography to create 3-D reconstructions of samples. Terahertz (THz) time domain spectroscopy (TDS), however, offers an alternative to MRI and CT due to its low-energy, non-ionizing radiation, and reasonable penetration lengths. This work presents an operational THz-TDS-based tomography setup, demonstrates its capabilities and explores some limitations. Theoretical background for the THz-TDS based tomography and possible explanations of the limitations are provided.
Distribution: Approved for public release
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Last Update / Reviewed: September 1, 2019