International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)
Submillimeter wave superconducting flux-flow oscillator
K. Sakai
Abstract
As a candidate for compact submillimeter oscillators, we have fabricated the flux-flow oscillator (FFO) connected with a bow-tie antenna and with a SIS detector by using the Nb/AlOx/Nb tunnel junction technology. We have obtained the guarantee of exact oscillation of the FFO in the frequency range between 160 GHz and 309 GHz by means of the observation of velocity-matching steps and the photon-assisted tunneling steps.