Real-Time Shadow Projection Millimeter-Wave Imaging Using Visible Continuum From a Slab of the Cs–Xe DC Discharge

A slab of the positive column of the Cs-Xe dc discharge has been employed as a 2-D sensor for real-time shadow projection millimeter-wave (MMW) imaging. MMW images are converted into visible images using the visible continuum from the plasma slab. Real-time MMW images of some test objects have been successfully obtained by using 35.4-GHz MMWs for object illumination.