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Advanced analysis concepts for terahertz time domain imaging

 
: Pradarutti, B.; Matthäus, G.; Riehemann, S.; Notni, G.; Nolte, S.; Tünnermann, A.

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Optics communications 279 (2007), No.2, pp.248-254
ISSN: 0030-4018
English
Journal Article
Fraunhofer IOF ()
fs-Laser; time-domain analysis; imaging; THz

Abstract
Imaging based on ultrashort terahertz (THz) pulses (100-3000 ?m) is investigated. The measured pulses are analyzed and the resulting amplitude and time delay information are compared. An algorithm for discrimination of multiple pulses is presented, which can distinguish several layers inside an object. A new measurement concept is presented, which accelerates the measurement of samples with small optical path differences about two orders of magnitudes. Exemplarily different applications from the field of quality management are shown.

: http://publica.fraunhofer.de/documents/N-65529.html