Terahertz (THz) wave detectors include Golay cells, bolometers, pyroelectric detectors,
superconductor tunnel junction detectors (STJs), and Schottky-barrier diodes (SBDs). Of …

High-quality ultrathin film is the key element of hot-electron devices. Using a doped
sputtering target, high-performance niobium (Nb) ultrathin films are grown on high-resistivity …

We present measurements of the dynamical response of thermal noise to an ac excitation in
conductors at low temperature. From the frequency dependence of this response function …

We report characterizations of antenna-coupled hot electron bolometers designed for
laboratory-based terahertz spectroscopy. These direct detectors combine sub-nanosecond …

We report the measurement of the third moment of current fluctuations in a short metallic
wire at low temperature. The data are deduced from the statistics of voltage fluctuations …

In this paper we study the temperature dependence of the receiver noise temperature and IF
noise bandwidth of superconducting hot electron bolometer (HEB) mixers. Three …

We report the performance of a niobium hot-electron bolometer designed for laboratory
terahertz spectroscopy. The antenna-coupled detector can operate above 4.2 K and has fast …

We characterize the evolution of the electrical properties of ultra-thin niobium films stored in
ambient conditions over a period of approximately seven months. Patterned films with …

This thesis is an experimental study of the electrothermal properties of two types of
microstructures, the superconducting microbridge and the single-walled carbon nanotube. A …

The design and simulation of hot electron bolometer sensors for the detection of millimeter
and terahertz wave radiation is presented. These devices can be used for the formation of …