We have designed and fabricated novel antenna-coupled superconducting bolometers for submillimeter and millimeter waves, which make use of the thermal boundary resistance between metals and insulators and the trapping of quasiparticles at metal-superconductor interfaces. We have used these devices to make measurements of the frequency response and optical efficiency of the log-periodic antennas between 90 GHz to 1.8 THz.
M. Nahum, M. Nahum,
"Novel low temperature superconducting bolometers", Proc. SPIE 1929, 17th International Conference on Infrared and Millimeter Waves, 19293V (14 December 1992); doi: 10.1117/12.2298256; https://doi.org/10.1117/12.2298256