Address:
Grégory Gaudin from the Microwave deprtment (MO) and from the LabSTICC laboratory, will present his research about :
"Modelling of quasi-optical systems and original components for THz signal measurement"
Terahertz (THz) radiation is gainingincrea sing attention due to its ability to penetrate various non-conductive materials such as plastics, ceramics, and textiles. It is used in numerous applications, including telecommunications, non-destructive material testing, security, and biomedical technologies, all of which requiring quasi-optical systems to manipulate these waves. In this context, simulating complex quasioptical systems is essential for designing more efficient devices. This thesis examines the use of asymptotic methods, such as the decomposition of an electromagnetic field into Gaussian beams (GB), to model the interaction of THz waves with quasi-optical components. After presenting the formalism of Gaussian beams, the developed simulator is used to model free-space material characterisation setups in the W and J bands, followed by the modeling of a focusing device for THz imaging
Organizer(s)
Thesis co-accreditation from IMT Atlantique with the doctoral school SPIN
Keywords : Electromagnetisme , THz, Gaussian Beams, Quasi-Optical