PT Journal AU Hajenius, M Baselmans, JJA Baryshev, A Gao, JR Klapwijk, TM Kooi, JW Jellema, W Yang, ZQ TI Full characterization and analysis of a terahertz heterodyne receiver based on a NbN hot electron bolometer SO J. Appl. Phys. PY 2006 BP 074507 VL 100 IS 7 DI 10.1063/1.2354421 DE HEB ER