Waveguide

Terahertz waveguiding

Guided Reflectometry Imaging Unit using Millimeter Wave FMCW Radars

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Plastic wavguide for terahertz sensing in reflection

In this paper published in july 2020 in IEEE Transactions on Terahertz Science and Technology, we present a reflectometry sensing system associated with a frequency modulated continuous wave radar. Then, a solid immersion lens is added to the system to improve the resolution. Abstract of terahertz reflectometry setup Frequency Modulated Continuous Wave (FMCW) radar systems … Read more

Guided terahertz pulse reflectometry with double photoconductive antenna

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Guided Terahertz reflectometry setup

This article presents a terahertz imaging system using a waveguide with a reflection topology. The system is based on a femtosecond pulse laser, a transceiver, and a silica pipe hollow-core waveguide. Silicon lens, beam splitter or coupler is no more required to manipulate the terahertz beam in free space, which makes this system setup more … Read more

Near-field wire-based passive probe antenna for the selective detection of the longitudinal electric field at terahertz frequencies

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Adam, R., Chusseau, L., Grosjean, T., Penarier, A., Guillet, J. P., & Charraut, D. (2009). Near-field wire-based passive probe antenna for the selective detection of the longitudinal electric field at terahertz frequencies. Journal of Applied Physics, 106(7), 073107.

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Coupling and propagation of Sommerfeld waves at 100 and 300 GHz

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The coupling between a linearly-polarized gaussian beam and a Sommerfeld wave propagating on a circular metallic wire is obtained owing to a differential phase element inserted in front of the metal wire. At millimeter-wavelengths we calculate a theoretical maximum coupling efficiency of 32% for this system in spite of the metal nature and radius in … Read more