François Simoens, Laurent Dussopt, Jérôme Meilhan, Jean-Alain Nicolas, Nicolas Monnier, Alexandre Siligaris, Bruno Hiberty, Jean-Baptiste Perraud, Patrick Mounaix, Jérémy Lalanne-Dera, Olivier Redon
https://www.spiedigitallibrary.org/conference-proceedings-of-spie/10531/105310T/Towards-industrial-applications-of-terahertz-real-time-imaging/10.1117/12.2287709.short?SSO=1
Recent innovations in photonics and
nanotechnology are now enabling terahertz (THz) research to be applied in many
industrial fields such as homeland security, information and communications
technology (ICT), biology and medical science, non-destructive tests or quality
control of food and agricultural products. Still many challenges are to be
addressed, the main one being to provide THz systems with sufficient signal to
noise ratio when operated in real industrials conditions. In addition, cost is
a key lock that hampers the spread of this technology but it is clear that
cost-effective sources and detectors compatible with standard microelectronics
will drive down the overall cost, and in particular will make THz imaging
accessible for industrial use. In order to bring THz imaging to industry, Leti
has been developing over the past decade complementary CMOS-compatible uncooled
imaging 2D-array technologies: antenna-coupled bolometers and Field Effect
Transistor detectors. In addition, CEATech built a test platform dedicated to
the development of industrial prototypes of photonics technologies. In
particular, in collaboration with i2S, this platform includes the TZCAM camera
equipped with Leti’s 320×240 bolometric pixel array and gives access to a full
industrial THz imaging chain that is essential for maturation of this emerging
technology. This paper gives an overview of these developments and illustrates
industrial applications with examples of uncooled THz imaging tests, e.g.
opaque object 2D inspection or 3D tomography.
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