Terahertz Quantum Cascade Laser based active imaging

This paper describes the recently developed works conducted at OLIMPES (Optronique, Laser, Imagerie Physique et Environnement Spatial), a laboratory resulting from a collaboration between ISAE and ONERA. The experimental setup is based on a Quantum Cascade Laser (QCL) as a source and an NTD-Ge bolometer as a detector. Our goal is to perform: - materials diagnostics, both in transmission and reflection, at various frequencies in the 2 - 5 THz range - experimental validation of QCL modelling - short-range imaging