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Open AccessArticle

A Versatile Illumination System for Real-Time Terahertz Imaging

1
IMS—Bordeaux University, UMR CNRS 5218, Bât A31, 351 Cours de la Libération, 33400 Talence, France
2
Lytid—8 rue la Fontaine, 92120 Montrouge, France
*
Author to whom correspondence should be addressed.
These authors contributed equally to this work.
Sensors 2020, 20(14), 3993; https://doi.org/10.3390/s20143993
Received: 22 June 2020 / Revised: 10 July 2020 / Accepted: 12 July 2020 / Published: 17 July 2020
(This article belongs to the Special Issue Terahertz Imaging and Sensors)
Terahertz technologies are attracting strong interest from high-end industrial fields, and particularly for non-destructive-testing purposes. Currently lacking compactness, integrability as well as adaptability for those implementations, the development and commercialisation of more efficient sources and detectors progressively ensure the transition toward applicative implementations, especially for real-time full-field imaging. In this work, a flexible illumination system, based on fast beam steering has been developed and characterized. Its primary goal is to suppress interferences induced by the coherence length of certain terahertz sources, spoiling terahertz images. The second goal is to ensure an enhanced signal-to-noise ratio on the detector side by the full use and optimized distribution of the available power. This system provides a homogeneous and adjustable illumination through a simplified setup to guarantee optimum real-time imaging capabilities, tailored to the sample under inspection. Working toward industrial implementations, different illumination process are conveniently assessed as a result of the versatility of this method. View Full-Text
Keywords: terahertz; imaging; versatility; illumination; microbolometer; lissajous; real-time; non-destructive-testing; tomography terahertz; imaging; versatility; illumination; microbolometer; lissajous; real-time; non-destructive-testing; tomography
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MDPI and ACS Style

Perraud, J.-B.; Chopard, A.; Guillet, J.-P.; Gellie, P.; Vuillot, A.; Mounaix, P. A Versatile Illumination System for Real-Time Terahertz Imaging. Sensors 2020, 20, 3993. https://doi.org/10.3390/s20143993

AMA Style

Perraud J-B, Chopard A, Guillet J-P, Gellie P, Vuillot A, Mounaix P. A Versatile Illumination System for Real-Time Terahertz Imaging. Sensors. 2020; 20(14):3993. https://doi.org/10.3390/s20143993

Chicago/Turabian Style

Perraud, Jean-Baptiste; Chopard, Adrien; Guillet, Jean-Paul; Gellie, Pierre; Vuillot, Antoine; Mounaix, Patrick. 2020. "A Versatile Illumination System for Real-Time Terahertz Imaging" Sensors 20, no. 14: 3993. https://doi.org/10.3390/s20143993

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