Imaging Components, Systems, and Processing

Continuous-wave terahertz digital holographic tomography with a pyroelectric array detector

[+] Author Affiliations
Bin Li, Wan Min, Haochong Huang

Beijing University of Technology, College of Applied Sciences, No. 100 Pingleyuan Road, Beijing, 100124, China

Dayong Wang, Lu Rong, Yunxin Wang

Beijing University of Technology, College of Applied Sciences, No. 100 Pingleyuan Road, Beijing, 100124, China

Beijing University of Technology, Beijing Engineering Research Center of Precision Measurement Technology and Instruments, No. 100 Pingleyuan Road, Beijing, 100124, China

Xun Zhou, Zeyu Li, Lei Li

Research Center of Laser Fusion, Chinese Academy of Engineering Physics, Mianyang, 621900, China

Microsystem and Terahertz Research Center, Chinese Academy of Engineering Physics, Mianyang, 621900, China

Opt. Eng. 55(5), 053106 (May 12, 2016). doi:10.1117/1.OE.55.5.053106
History: Received February 24, 2016; Accepted April 20, 2016
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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.

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© 2016 Society of Photo-Optical Instrumentation Engineers

Citation

Bin Li ; Dayong Wang ; Xun Zhou ; Lu Rong ; Zeyu Li, et al.
"Continuous-wave terahertz digital holographic tomography with a pyroelectric array detector", Opt. Eng. 55(5), 053106 (May 12, 2016). ; http://dx.doi.org/10.1117/1.OE.55.5.053106


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