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.
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 (Presented at SPIE OPTO: January 30, 2018; Published: 14 March 2018); https://doi.org/10.1117/12.2290891.5751517313001.
Conference Presentations are recordings of oral presentations given at SPIE conferences and published as part of the conference proceedings. They include the speaker's narration along with a video recording of the presentation slides and animations. Many conference presentations also include full-text papers. Search and browse our growing collection of more than 12,000 conference presentations, including many plenary and keynote presentations.