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Optical Engineering

Continuous-wave terahertz digital holographic tomography with a pyroelectric array detector
Author(s): Bin Li; Dayong Wang; Xun Zhou; Lu Rong; Zeyu Li; Lei Li; Wan Min; Haochong Huang; Yunxin Wang
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Paper Abstract

Terahertz computed tomography makes use of the penetrability of terahertz radiation and obtains three-dimensional (3-D) object projection data. Continuous-wave terahertz digital holographic tomography with a pyroelectric array detector is presented. Compared with scanning terahertz computed tomography, a pyroelectric array detector can obtain a large quantity of projection data in a short time. To obtain a 3-D image, in-line digital holograms of the object are recorded from various directions and reconstructed to obtain two-dimensional (2-D) projection data; then 2-D cross-sectional images and 3-D images of the internal structure of the object are obtained by the filtered back projection algorithm. The presented system can rapidly reconstruct the 3-D object and reveals the internal 3-D structure of the object. A 3-D reconstruction of a polyethylene straw is presented with a 6% error in retrieved diameter.

Paper Details

Date Published: 12 May 2016
PDF: 6 pages
Opt. Eng. 55(5) 053106 doi: 10.1117/1.OE.55.5.053106
Published in: Optical Engineering Volume 55, Issue 5
Show Author Affiliations
Bin Li, Beijing Univ. of Technology (China)
Dayong Wang, Beijing Univ. of Technology (China)
Xun Zhou, China Academy of Engineering Physics (China)
Lu Rong, Beijing Univ. of Technology (China)
Zeyu Li, China Academy of Engineering Physics (China)
Lei Li, China Academy of Engineering Physics (China)
Wan Min, Beijing Univ. of Technology (China)
Haochong Huang, Beijing Univ. of Technology (China)
Yunxin Wang, Beijing Univ. of Technology (China)


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