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14 March 2018 Guided terahertz pulsed reflectometry: a remote probe for near-field imaging (Conference Presentation)
Mingming Pan, Frédéric Fauquet, Dean Lewis, Frédéric Darracq, Patrick Mounaix, Jean-Paul Guillet
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Proceedings Volume 10531, Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications XI; 105310L (2018) https://doi.org/10.1117/12.2290891
Event: SPIE OPTO, 2018, San Francisco, California, United States
Abstract
Guided terahertz pulse reflectometry uses a near field probe to couple a wave in a waveguide. The signal is then reflected depending on the impedance at the end of the waveguide. We experimentally use a near field antenna from Protemics which have two photoconductive antennas on the same chip. The first is excited with laser on frond side et the second on the back side. We associate to this antenna a waveguide to couple a wave and we determine the localization of the end. We observe at this position a change of the signal depending on the impedance. This topology can be used for remote imaging without lens or optics of for non destructive test of 3D electronics packages. Finite Differente in Time Domain simulation were also used to evaluate coupling and origin of losses at each transition.
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Citation Download Citation
Mingming Pan, Frédéric Fauquet, Dean Lewis, Frédéric Darracq, Patrick Mounaix, and Jean-Paul Guillet "Guided terahertz pulsed reflectometry: a remote probe for near-field imaging (Conference Presentation)", Proc. SPIE 10531, Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications XI, 105310L (14 March 2018); https://doi.org/10.1117/12.2290891
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KEYWORDS
Terahertz radiation
Waveguides
Antennas
Near field
Reflectometry
3D image processing
Electronics
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