Effect of Electron Thermal Conductivity on Resonant Plasmonic Detection in Terahertz Hot-Electron Bolometers Based on Metal/Black-AsP/Graphene FETs

Lens-Antenna Coupled Superconducting Hot-Electron Bolometers for Terahertz Heterodyne Detection and Imaging

Terahertz imaging and spectroscopy based on hot electron bolometer (HEB) heterodyne detection*

Imaging and spec troscopy at terahertz fre quencies have great po tential for healthcare, plasma di ag nos tics, and homeland secu rity ap pli ca tions. Terahertz fre quen cies cor re spond to en ergy level tran si tions of im por tant mol e cules in bi ol ogy and as trophys ics. Terahertz ra di a tion (T-rays) can pen e trate cloth ing and, to some ex tent, can also pen e trate bi o log i cal ...

Heterodyne mixing in diffusion-cooled superconducting aluminum hot- electron bolometers

We present microwave ~30 GHz! measurements on aluminum superconducting hot-electron bolometer ~HEB! mixers. Aluminum HEB mixers have a lower superconducting transition temperature than niobium and niobium nitride devices, and are predicted to have improved sensitivity and require less local oscillator power. The devices studied consist of a narrow superconducting aluminum microbridge with conta...

IF impedance and mixer gain of NbN hot electron bolometers

The intermediate frequency IF characteristics, the frequency dependent IF impedance, and the mixer conversion gain of a small area hot electron bolometer HEB have been measured and modeled. The device used is a twin slot antenna coupled NbN HEB mixer with a bridge area of 1 0.15 m2, and a critical temperature of 8.3 K. In the experiment the local oscillator frequency was 1.300 THz, and the IF 0...

IF Impedance and Mixer Gain of Hot-Electron Bolometers

We have measured the frequency dependent IF impedance and mixer conversion gain of a small area NbN hot-electron bolometer (HEB). The device used is a twin slot antenna coupled NbN HEB mixer with a bridge area of 1 μm x 0.15 μm, and a critical temperature of 8.3 K. In the experiment the local oscillator (LO) frequency was 1.300 THz, and the intermediate frequency (IF) 0.05-10 GHz. We find that ...