Advances in terahertz three-dimensional imaging techniques

WANG Yu-ye1,2,3 CHEN Lin-yu1,2 XU De-gang1,2 SHI Jia1,2 FENG Hua3 YAO Jian-quan1,2

(1.Institute of Laser and Optoelectronics, School of Precision Instrument and Optoelectronics Engineering, Tianjin University, Tianjin, China 300072)
(2.Key Laboratory of Optoelectronics Information Technology (Ministry of Education), Tianjin University, Tianjin, China 300072)
(3.Institute of Neurosurgery, Southwest Hospital, Army Medical University, Chongqing, China 400038)

【Abstract】Terahertz (THz) waves are characteristic for their low photon energy and fingerprint spectrum and ability to penetrate a large number of nonpolar materials. They have shown many unique advantages in areas such as nondestructive testing, security inspection, biological diagnosis and art identification. Three-dimensional THz tomographic imaging is especially useful for its ability to detect information inside samples. It is becoming a hot research topic and shows great promise for future development. In this paper, some typical THz three-dimensional imaging techniques are introduced, along with their basic principles and some potential research advancements. Some existing problems are described and some areas for future development trends are proposed.

【Keywords】 terahertz wave; three-dimensional imaging; computed tomography; optical coherence tomography; time of flight tomography;

【Funds】 National Key Basic Research Program of China (973 Program) (2015CB755403, 2014CB339802) National Key Research and Development Project (2016YFC0101001) National Natural Science Foundation of China (61775160, 61771332, 61471257) China Postdoctoral Science Foundation (2016M602954) Postdoctoral Science Foundation of Chongqing City (Xm2016021) Technology Innovation Program of Strengthening Hospital by Biomedicine of Chongqing Southwest Hospital (SWH2016LHJC04, SWH2016LHJC01)

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(Translated by CAI ZJ)


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This Article


CN: 22-1400/O4

Vol 12, No. 01, Pages 1-18

February 2019


Article Outline



  • 1 Introduction
  • 2 THz CT
  • 3 Reflection-type THz tomography
  • 4 Other THz 3D imaging technologies
  • 5 Conclusions
  • References