Terahertz imaging makes it possible to acquire images of objects concealed underneath
clothing by measuring the radiometric temperatures of different objects on a human subject …

We describe the construction and performance of a passive, real-time terahertz camera
based on a modular, 64-element linear array of cryogenic hotspot microbolometers. A …

This paper gives an overview of measurement techniques used in the THz region of the
electromagnetic spectrum, from about 100 GHz to several THz. Currently available …

A 600-GHz single-chip focal-plane array (FPA) has been fully integrated in a 0.25-mum
CMOS process technology. The 3times5 array achieves a room temperature responsivity of …

We describe a broadband terahertz camera based on a modular 64-element linear array of
hot-spot microbolometers Unlike many superconducting sensor arrays, the readout for this …

Conventional material measurements of transmission and reflection in the millimeter-wave
and terahertz frequency range do not differentiate between scattering and absorption …

This article describes the theory and design of an ultra-low noise electronic readout circuit
for use with room temperature video-rate terahertz imaging arrays. First, the noise …

At present, the imaging of concealed weapons and contraband is primarily carried out at a
relatively short stand-off range of a few meters mainly because of spatial resolution …

We present ultrawideband imagery obtained with modular, 8-element, superconducting Nb
microbolometer arrays. Conically scanned images are presented and compared with raster …

Imaging at submillimetre-wave (SMMW) frequencies is of considerable interest for security
applications due to potentially superior performance at longer stand-off ranges in …