Effects of window index and thickness on hydration sensitivity and probing depth of THz imaging systems

James Garritano, Neha Bajwa, Shijun Sung, Bryan Nowroozi, Priyamvada Tewari, Warren S. Grundfest, Zachary D. Taylor

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Electromagnetic modeling predicts that dielectric substrate windows placed above a tissue of interest alter the hydration sensitivity of reflective THz imaging systems. Furthermore, interference effects between layers (the window with the skin layers) cause the window's optical path length to change the depth probed by the imaging system. A pulsed THz imaging system operating at ∼ 500 GHz was used to image a burn wound in a rat model, with thin mylar (12 μm) and quartz (500 mm) windows examined. Imaging occurred over five hour period, with windows exchanged every 13 minutes. Large differences in contrast between the windows was observed, and the two sets of images reveal different hydration maps distal to the burn, suggestive that the dielectric window successfully probed a different depth than the mylar window.

Original languageEnglish
Title of host publication2014 39th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2014
PublisherIEEE Computer Society
ISBN (Electronic)9781479938773
DOIs
StatePublished - 13 Nov 2014
Externally publishedYes
Event39th International Conference on Infrared, Millimeter and Terahertz Waves, IRMMW-THz 2014 - Tucson, United States
Duration: 14 Sep 201419 Sep 2014

Publication series

NameInternational Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz
ISSN (Print)2162-2027
ISSN (Electronic)2162-2035

Conference

Conference39th International Conference on Infrared, Millimeter and Terahertz Waves, IRMMW-THz 2014
Country/TerritoryUnited States
CityTucson
Period14/09/1419/09/14

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