Prop erties of Terahertz Superconducting Hot Electron Bolometer Mixers
J. Chen, Biao Jin, Weizong Xu, Peiheng Wu, Weiwei Zhang, Ling Jiang
Abstract
A quasi-optical superconducting niobium nitride (NbN) hot electron bolometer (HEB) mixer has been fabricated and measured in the terahertz (THz) frequency range of 0.5~2.52 THz. A receiver noise temperature of 2000 K at 2.52 THz has been obtained for the mixer without corrections. Also, the effect of a Parylene C anti-reflection (AR) coating on the silicon (Si) lens has been studied.