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Frank Ellrich, Tristan Weinland, Michael Theuer, Joachim Jonuscheit, René Beigang
Fiber-coupled Terahertz Spectroscopy System
Keywords: terahertz, time-domain spectroscopy, industrial application, fiber coupling, short pulse delivery
The use of broadband laser pumped Terahertz (THz) systems for industrial applications strongly relies on the reliability and stability of the system. It has to be compact and easy to be implemented into the particular application. Fiber-coupled THz systems are the key to widespread use of these systems. In order to couple THz emitters and detectors to fibers with lengths of several meters the dispersion and the nonlinear properties of fibers have to be taken into account. This is discussed in this article. As a possible application of the fiber-coupled Terahertz system in the field of nondestructive testing the measurements of the thicknesses of thin films are shown. These measurements are performed in both transmission and reflection.
tm – Technisches Messen, Oldenbourg Wissenschaftsverlag
Print ISSN: 0171-8096
Volume: 75, 01/2008
Pages: 014 - 022