Title :
Noninvasive 3D characterization of layered samples using terahertz pulsed imaging and infrared optical coherence tomography
Author :
Zhong, Shuncong ; Shen, Hao ; Shen, Yao-Chun ; Zeitler, J. Axel ; Ho, Louise ; Evans, Mike ; Taday, Philip T. ; Pepper, Michael ; Rades, Thomas ; Gordon, Keith C. ; Muller, Ronny ; Kleinebudde, Peter
Author_Institution :
Dept. of Electr. Eng. & Electron., Univ. of Liverpool, Liverpool, UK
Abstract :
Terahertz pulsed imaging (TPI) and optical coherence tomography (OCT) are two powerful techniques allowing high quality three-dimensional images from within scattering media to be obtained noninvasively. In this paper, we report experimental results of using TPI and OCT for characterizing layered samples including pharmaceutical coatings. We found that infrared OCT provides better axial resolutions whilst TPI is less prone to scattering problems thus is well suited for characterizing pharmaceutical tablet coatings.
Keywords :
coatings; medicine; optical tomography; pharmaceutical technology; terahertz wave imaging; axial resolutions; infrared optical coherence tomography; noninvasive 3D characterization; pharmaceutical tablet coatings; scattering media; terahertz pulsed imaging; three-dimensional images; Biomedical optical imaging; Coatings; Infrared imaging; Optical imaging; Optical pulses; Optical scattering; Optical surface waves; Pharmaceuticals; Polymer films; Tomography;
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
DOI :
10.1109/ICIMW.2009.5324630
