Abstract
We propose a multilayer geometry to characterize thin-film samples in reflection terahertz time domain spectroscopy. Theory indicates that this geometry has higher sensitivity compared to ordinary transmission or reflection geometries when characterizing both low- and high-absorption samples. Pure water and water–ethanol mixtures are measured to verify the characterization accuracy of the proposed geometry and its capability to measure trace liquids. Paraffin-embedded oral cancer tissue is imaged to further show how the proposed geometry enhances the sensitivity for solid low-absorptive films.
© 2019 Optical Society of America
Full Article | PDF ArticleMore Like This
Xuefei Ding, A. I. Hernandez-Serrano, Hannah Lindley-Hatcher, Rayko I. Stantchev, Jun Zhou, and Emma Pickwell-MacPherson
Opt. Express 30(11) 18079-18089 (2022)
Young-Sik Ghim and Hyug-Gyo Rhee
Opt. Lett. 44(22) 5418-5421 (2019)
Florian Formanek, Marc-Aurèle Brun, and Akio Yasuda
Biomed. Opt. Express 2(1) 58-64 (2011)