Title :
Broadband "focus-free" terahertz imaging using axicons
Author :
Busch, Stefan ; Town, Graham E. ; Koch, Martin
Author_Institution :
Fachbereich Phys., Philipps-Univ. Marburg, Marburg, Germany
Abstract :
We report the use of axicons to achieve broadband "focus-free" imaging in transmission and reflection at terahertz wavelengths. We demonstrate how the use of a broadband terahertz source improves the resolution of the imaging system, and how by using time-of-flight data the axial position and dimension of objects within the large depth of field of the axicon (160 mm) could be determined.
Keywords :
image resolution; terahertz wave imaging; axial position; axicons; broadband focus-free terahertz imaging; imaging system resolution; terahertz wavelengths; time-of-flight data; Approximation methods; Broadband communication; Geometry; Image resolution; Imaging; Optics; Reflection;
Conference_Titel :
Infrared, Millimeter, and Terahertz waves (IRMMW-THz), 2014 39th International Conference on
Conference_Location :
Tucson, AZ
DOI :
10.1109/IRMMW-THz.2014.6956090
