Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group
Journal Home About Issues in Progress Current Issue All Issues Early Posting

Terahertz fan-beam computed tomography

Sishi Shen, Congjing Hao, Bin Liang, Jinsong Liu, Zhengang Yang, and Kejia Wang

Not Accessible

Your library or personal account may give you access

Abstract

A terahertz (THz) fan-beam computed tomography (CT) system using a 0.3 THz continuous-wave sheet beam is proposed. The diffraction-free sheet beam expands in a fan shape in only one direction and provides propagation-invariant focal lines and extended the depth-of-field. The fan-beam CT based on this beam is the second-generation THz CT. It breaks the conventional 4-f symmetric structure of THz CT using the parallel beam. The fan-beam THz CT allows for use with a linear array detector, which reduces the time required to collect data. To demonstrate its feasibility for three-dimensional (3D) imaging, the 3D structure of a metal rod packed in a carton is reconstructed with the support of the system. The results show that the object’s internal structure can be obtained by this new THz CT system while retaining the geometrically magnified features of the cross-sectional structure. The results of our research provide a template for the second-generation THz CT system, which provides an additional method for nondestructive testing.

© 2024 Optica Publishing Group

Full Article  |  PDF Article
More Like This
Beam-shaped femtosecond laser printing of quasi-capsule-shaped holographic terahertz metasurfaces

Dan Rao, Jing Qian, Xiaohan Yu, Lequn Liu, Guande Wang, Yiwen Zhou, Teng Zhang, and Quanzhong Zhao
Opt. Lett. 49(6) 1544-1547 (2024)

Data-driven method of super-resolution image recovery for speckle-illumination photoacoustic computed tomography

Tianhua Zhou, Boyi Li, Xin Liu, and Dean Ta
Opt. Lett. 49(8) 1949-1952 (2024)

Sub-Nyquist sampling-based high-frequency photoacoustic computed tomography

Songde Liu, Chenxi Zhang, Junyi Zhang, Xingyang Liu, Benpeng Zhu, and Chao Tian
Opt. Lett. 49(7) 1648-1651 (2024)

View More...

Supplementary Material (1)

NameDescription
Supplement 1       Detailed explanation of the principle, design, and preparation of optical elements.

Data availability

Data underlying the results presented in this paper are not publicly available at this time but may be obtained from the authors upon reasonable request.

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (5)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (2)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters
Select Topics Cancel
Top
       
© Copyright 2024 | Optica Publishing Group. All rights reserved, including rights for text and data mining and training of artificial technologies or similar technologies.
Privacy | Terms of Use