Propagation of terahertz radiation through random structures: an alternative theoretical approach and experimental validation

Fletcher, J.R.; Swift, G.P.; Dai, De Chang; Levitt, J.A.; Chamberlain, J.M.

doi:10.1063/1.2403860

Propagation of terahertz radiation through random structures: an alternative theoretical approach and experimental validation

Fletcher, J.R.; Swift, G.P.; Dai, De Chang; Levitt, J.A.; Chamberlain, J.M.

Authors

J.R. Fletcher

Dr Peter Swift g.p.swift@durham.ac.uk
Associate Professor

De Chang Dai

J.A. Levitt

J.M. Chamberlain

Contributors

NN Zinov'ev dph0nnz@durham.ac.uk
Other

Abstract

A model describing the propagation of terahertz frequency radiation through inhomogeneous materials is proposed. In such materials (e.g., powders or clothing), the size of the scattering centers, their separation, and the wavelength of the radiation are all commensurate. A phase distribution function is used to model the optical properties of a randomly structured transmitting layer. The predictions of the model are compared with exact (Mie) theory for isolated spherical scatterers and with previously published experimental data. Measurements of the transmission of terahertz radiation through a variety of samples in order to validate the present model are also reported. These include arrays of cylinders, textiles, powders, and glass balls. Overall, satisfactory agreement between the experimental data and theoretical predictions is obtained.

Citation

Fletcher, J., Swift, G., Dai, D. C., Levitt, J., & Chamberlain, J. (2007). Propagation of terahertz radiation through random structures: an alternative theoretical approach and experimental validation. Journal of Applied Physics, 101(1), Article 013102. https://doi.org/10.1063/1.2403860

Journal Article Type	Article
Acceptance Date	Oct 20, 2006
Online Publication Date	Jan 2, 2007
Publication Date	Jan 2, 2007
Deposit Date	Jan 9, 2009
Publicly Available Date	Nov 3, 2011
Journal	Journal of Applied Physics
Print ISSN	0021-8979
Electronic ISSN	1089-7550
Publisher	American Institute of Physics
Peer Reviewed	Peer Reviewed
Volume	101
Issue	1
Article Number	013102
DOI	https://doi.org/10.1063/1.2403860

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Copyright Statement
Copyright 2007 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Fletcher, J. R. and Swift, G. P. and Dai, De C. and Levitt, J. A. and Chamberlain, J. M. (2007) 'Propagation of terahertz radiation through random structures : an alternative theoretical approach and experimental validation.', Journal of applied physics., 101 (1): 013102 and may be found at https://doi.org/10.1063/1.2403860