By integrating a mid-wave or long-wave infrared (MWIR/LWIR) camera, similar to those used in thermal imaging, into an interferometric setup combined with a broadband infrared source, we aim to achieve deep imaging through diffusive and/or opaque layers such as paints, coatings, plastics, ceramics, or aged varnishes.
Full-Field OCT (FF-OCT) remains largely unexplored in the mid-IR range. This project will therefore address both fundamental questions on infrared light propagation in complex scattering media and applied challenges in several fields. This internship/PhD thesis offers an opportunity to contribute to the development of a new generation of infrared interferometric imaging tools, expanding the reach of OCT beyond its traditional spectral limits. Anticipated applications include :
– Non-destructive testing, particularly for detecting subsurface defects in industrial coatings used in aerospace and advanced manufacturing.
– Cultural heritage analysis, enabling visualization beneath painted surfaces and ceramic glazes.
It will be carried out as part of a collaboration between Institut Langevin (ESPCI Paris, PSL University) and ONERA.
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