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Proceedings Paper

Analysis of terahertz pulse propagation through a dielectric edge
Author(s): Yingxin Wang; Ziran Zhao; Zhiqiang Chen; Li Zhang; Kejun Kang
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Paper Abstract

The wavelength of terahertz radiation is typically on the order of millimeters and submillimeters, and not negligible compared to the sizes of the optical components and the sample structure. Diffraction and scattering effects will be prominent in this situation, yielding spatiotemporal reshaping of terahertz pulse during its propagation. One representative example involves the propagation of a focused terahertz beam through a dielectric edge, which is frequently encountered in terahertz pulsed imaging. In this paper, we present a theoretical and experimental investigation on this edge diffraction problem. Benefiting from the presence of edge diffraction, high contrast image is likely to be obtained, which enables a weak-absorption (or transparent) object to be clearly resolved and reveals potential applications of terahertz imaging in nondestructive detection and biomedical diagnosis.

Paper Details

Date Published: 16 February 2009
PDF: 8 pages
Proc. SPIE 7277, Photonics and Optoelectronics Meetings (POEM) 2008: Terahertz Science and Technology, 72770R (16 February 2009); doi: 10.1117/12.821656
Show Author Affiliations
Yingxin Wang, Tsinghua Univ. (China)
Ziran Zhao, Tsinghua Univ. (China)
Zhiqiang Chen, Tsinghua Univ. (China)
Li Zhang, Tsinghua Univ. (China)
Kejun Kang, Tsinghua Univ. (China)

Published in SPIE Proceedings Vol. 7277:
Photonics and Optoelectronics Meetings (POEM) 2008: Terahertz Science and Technology
Jianquan Yao; Shenggang Liu; Xi-Cheng Zhang, Editor(s)

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