Imaging of pulsed watt-scale millimeter waves using visible continuum from a Cs-Xe discharge

We present a high-sensitivity technique for time-resolved imaging of millimeter waves using the visible continuum (VC) from a uniform slab of the positive column (PC) of Cs-Xe DC discharge. Using the discharge technique, field patterns of pulsed watt-scale Ka-band millimeter-waves were imaged at the output of conical horn antenna and in the quasioptical beam. We also demonstrated video-rate millimeter-wave (MMW) shadowgraphy using a slab of the PC of Cs-Xe DC discharge as a 2-D real-time MMW sensor. Near-field shadow projection MMW images of amplitude and phase objects have been obtained using 35.4 GHz radiation for object illumination.