Dark current analysis of quantum cascade detectors by magnetoresistance measurements

Magnetotransport in quantum cascade detectors: analyzing the current under illumination

Photocurrent measurements have been performed on a quantum cascade detector structure under strong magnetic field applied parallel to the growth axis. The photocurrent shows oscillations as a function of B. In order to describe that behavior, we have developed a rate equation model. The interpretation of the experimental data supports the idea that an elastic scattering contribution plays a cen...

The limit of quantum cascade detectors: A single period device

Quantum Efficiency Measurements of Dark Matter PMT

In this paper, improvements were made to procedure for measuring the quantum efficiency of dark matter photomultiplier tubes (PMTs), via LabVIEW automation software. Current dark matter detectors, such as the XENON100 experiment, as well as future detectors, such as the XENON1T, rely on the characterization of the component PMTs in order to properly analyze the data obtained during the course o...

Resonant metamaterial detectors based on THz quantum-cascade structures

We present the design, fabrication and characterisation of an intersubband detector employing a resonant metamaterial coupling structure. The semiconductor heterostructure relies on a conventional THz quantum-cascade laser design and is operated at zero bias for the detector operation. The same active region can be used to generate or detect light depending on the bias conditions and the vertic...

Temperature Effect on THz Quantum Cascade Lasers

A simple semi-phenomenological model, which accurately predicts the dependence of thresholdcurrent for temperature of Resonant-phonon three well quantum cascade laser based on verticaltransitions is offered. We found that, the longitude optical phonon scattering of thermally excitedelectrons is the most important limiting factor for thermal performance of high frequency THz QCLs.In low frequenc...