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

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). p. 13102.

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

Item Type:Article
Full text:PDF - Published Version (186Kb)
Status:Peer-reviewed
Publisher Web site:http://dx.doi.org/10.1063/1.2403860
Publisher 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). p. 13102 and may be found at http://dx.doi.org/10.1063/1.2403860
Record Created:09 Jan 2009
Last Modified:03 Nov 2011 14:29

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