12 May 2016 Continuous-wave terahertz digital holographic tomography with a pyroelectric array detector
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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.
© 2016 Society of Photo-Optical Instrumentation Engineers (SPIE)
Bin Li, Bin Li, Dayong Wang, Dayong Wang, Xun Zhou, Xun Zhou, Lu Rong, Lu Rong, Zeyu Li, Zeyu Li, Lei Li, Lei Li, Wan Min, Wan Min, Haochong Huang, Haochong Huang, Yunxin Wang, Yunxin Wang, } "Continuous-wave terahertz digital holographic tomography with a pyroelectric array detector," Optical Engineering 55(5), 053106 (12 May 2016). https://doi.org/10.1117/1.OE.55.5.053106 . Submission:
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