Tuesday, August 19, 2014

Abstract-High-T c superconducting Josephson mixers for terahertz heterodyne detection

We report on an experimental and theoretical study of the high-frequency mixing properties of ion-irradiated YBaCuO Josephson junctions embedded in THz antennas. We investigated the influence of the local oscillator power and frequency on the device performances. The experimental data are compared with theoretical predictions of the general three-port model formixers in which the junction is described by the resistively shunted junction model. A good agreement is obtained for the conversion efficiency in different frequency ranges, spanning above and below the characteristic frequencies of the junctions.

No comments: