Versatility of Y-Ba-Cu-O oxides: Cooled superconducting and uncooled semiconducting IR/THz detectors

In a first part, we are reporting on high-7c superconducting (YBCO) hot electron bolometers for high sensitivity and ultra-wide bandwidth terahertz heterodyne mixing and passive imaging. Here applications are sought in space programs as well as in civil security. In a second part, we are reporting on pyroelectric detectors using amorphous semiconducting (i.e., oxygen depleted) YBCO films; various applications are sought for room temperature IR / terahertz active imaging 2D arrays.