Beam propagation effects in THz time-domain tomography

Author

Stringer, Mark R. ; Wright, Paul ; Miles, Robert E. ; Ozanyan, Krikor

Author_Institution

Inst. of Microwaves & Photonics, Univ. of Leeds, Leeds, UK

fYear

2009

fDate

21-25 Sept. 2009

Firstpage

1

Lastpage

2

Abstract

We have performed 2-dimensional tomographic measurements upon shaped phantoms constructed from material with low optical power, using a time-domain THz arrangement. While the phantom morphology can be successfully reconstructed using the time-delay data, use of the THz pulse amplitude is less reliable, demonstrating distortions that may be a consequence of beam diffraction effect. This effectively masks the true attenuation contrast of the object.

Keywords

electromagnetic wave diffraction; electromagnetic wave propagation; terahertz wave imaging; tomography; 2D tomographic measurements; THz pulse amplitude; THz time domain tomography; attenuation contrast; beam diffraction effect; beam propagation effects; phantom morphology; Distortion measurement; Imaging phantoms; Optical attenuators; Optical distortion; Optical propagation; Performance evaluation; Power measurement; Shape measurement; Time domain analysis; Tomography;

fLanguage

English

Publisher

ieee

Conference_Titel

Infrared, Millimeter, and Terahertz Waves, 2009. IRMMW-THz 2009. 34th International Conference on

Conference_Location

Busan

Print_ISBN

978-1-4244-5416-7

Electronic_ISBN

978-1-4244-5417-4

Type

conf

DOI

10.1109/ICIMW.2009.5324753

Filename

5324753