Hot Electron Bolometer Development for a Submillimeter Heterodyne Array   Camera
  We are developing Nb diffusion-cooled Hot Electron Bolometers (HEBs) for a large-format array submillimeter camera. We have fabricated Nb HEBs using a new angle deposition process. We have characterized these devices using heterodyne mixing at 20 GHz. We also report on optimizations in the fabrication process that improve device performance. 
Matthew O. Reese, Daniel F. Santavicca, Luigi Frunzio, Daniel E.   Prober