… is at least four orders of magnitude lower. In conclusion, excellent performance of a
diffusioncooled Nb hot-electron bolometer mixer has been demonstrated at 2.5 THz. A DSB receiver …

… and tested a quasioptical diffusion-cooled HEB mixer at 2.5 THz. Record sensitivity was
obtained at this frequency demonstrating the superiority of HEB mixers at THz frequencies. …

… mixer with the antenna length scaled for operation at 2.5 THz has also been tested. A DSB
receiver noise … achieved, which is about 1,000 K lower than our previously reported results. …

… In this work we developed and tested a quasioptical diffusion-cooled HEB mixer at 2.5
THz. Record sensitivity was obtained at this frequency demonstrating the superiority of HEB …

… dz&~ion-cooZedHEB mixers at 1.1 THz and 2.5 THz in heterodyne receivers. Record sensitiviv
… lid line is the L-2 dependence for the diffusion cooled case. The devlces with L = 0.2 pm …

… The double sideband receiver noise temperature was measured to be 2750 K at 2.5 THz; …
The temperature distribution in the diffusion-cooled hot-electron bolometer is determined by …

… , with an estimated mixer noise temperature of 1060 K, and 2750 K at 2.5 THz, with an … and
tested quasioptical diffusion-cooled HEB mixers at 1 .THz and 2.5 THz in heterodyne receivers…

… diffusion-cooled HEB mixers, noise and IF bandwidth measurements of waveguide mixers
around 0.7 THz, … limit ourselves to QO mixers using twin slot antenna for 0.7 THz and 2.5 THz. …

… which will serve as ultralow noise detectors in THz … ,2 1.2 1880 K DSB,3 and 2.5 THz 2750
K DSB.Other groups have … for phonon and diffusion cooled Nb devices of various thermal time …

… -cooled HEB mixers at 1.1 THz and 2.5 THz in heterodyne receivers. … the advantages
of diffusioncooled HEB mixers at THz ti-… bandwidth and low noise in a diffusion-cooled hot-electron …