학술논문

Phase Effects In Terahertz Pulsed Imaging
Document Type
Conference
Source
2006 Joint 31st International Conference on Infrared Millimeter Waves and 14th International Conference on Teraherz Electronics Infrared Millimeter Waves and 14th International Conference on Teraherz Electronics, 2006. IRMMW-THz 2006. Joint 31st International Conference on. :561-561 Sep, 2006
Subject
Fields, Waves and Electromagnetics
Components, Circuits, Devices and Systems
Optical imaging
Teeth
Refractive index
Pulse measurements
Frequency measurement
Thickness measurement
Optical refraction
Biomedical imaging
Image generation
Focusing
Language
ISSN
2162-2027
2162-2035
Abstract
We have generated images of five tooth slices and three plastic step-wedges over a range of frequencies contained within a broadband terahertz pulse. It is observed that the boundaries between different types of materials (or thickness) are frequency dependent. A quantitative model of such image artefacts, involving the parameters of radiation frequency, sample thickness and material refractive indices, successfully reproduces the experimental data.