16 January 2006 Simulation of terahertz radiation in stratified media
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Abstract
The reflection characteristic of terahertz radiation (T-rays) in stratified media is being explored through the use of computer models. When T-rays are reflected off a sample, the measured T-ray signal contains coherent spectroscopic information about the sample. In the time domain, this spectroscopic information becomes the time response of the sample-a useful method for determining layer thickness and the number of interfaces in the sample. In order to confidently determine thickness and interfaces, the propagation characteristic of T-rays in a stratified medium needs to be understood. Internal reflections, interference, and water absorption within the layers can significantly alter the T-ray signal. This paper reports on a study of T-ray propagation in tissue layers inside the head, in reflection mode. Simulated results are presented and discussed.
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Gretel M. Png, Samuel P. Mickan, Derek Abbott, "Simulation of terahertz radiation in stratified media", Proc. SPIE 6038, Photonics: Design, Technology, and Packaging II, 60380M (16 January 2006); doi: 10.1117/12.638107; https://doi.org/10.1117/12.638107
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