Teams

The goal of the team is to investigate advanced technology and application in the THz range from photonic, electronic and laser related instruments. The THz devices, i.e source, detector and other systems, are mostly developed from different approaches by using nonlinear optical processes in various materials (bulk crystal or gas), photoconductive antenna or by tailoring the properties of the incoming laser (wavelength, duration, repetition rate…). The research work is undertaken from the simulations to the experiment in order to reach proofs of concept in the laboratory. The objectives are to improve system performances such as the efficiency, the spectral bandwidth toward the far infrared or to tailor the spatial profile. THz waveguides should also give real advantages for application in term of compactness, reliability and ease of use. Thus, we also investigate several types of waveguide to confine THz radiation toward the application (e.g with fiber) or to generate/detect efficiently the THz field (in fiber, ridged waveguide…). The THz systems are also specifically developed to include them in application related to THz spectroscopy, imaging and non-destructive control.

Main research activities related to the GPR are :

• Nonlinear photonics for THz radiation in waveguides and bulk materials
• THz fiber
• THz spectroscopy and imaging
• Four-wave mixing for source in the mid and far infrared