Title :
Self-Emission From Arrays of Overdamped Josephson Junctions
Author :
Song, Fengbin ; Müller, Franz ; Behr, Ralf ; Fang, Lan ; Klushin, Alexander M.
Author_Institution :
Inst. of Bio- & Nanosystems, Forschungszentrum Julich GmbH, Jülich, Germany
fDate :
6/1/2011 12:00:00 AM
Abstract :
Two self-emission peaks around 75 GHz and 80 GHz were observed from a series array of 7500 overdamped Josephson junctions. They originated from two corresponding resonant modes of the junction substrate served as a dielectric resonator antenna. With decreasing the operation temperature, the emission power was improved due to the increase in the critical current and the suppression of the Joule heating. Based on this method, it is promising to apply Josephson junctions as compact oscillators in terahertz frequency range.
Keywords :
dielectric resonator antennas; millimetre wave oscillators; superconducting arrays; superconducting junction devices; terahertz wave devices; Joule heating suppression; dielectric resonator antenna; frequency 80 GHz; junction substrate; overdamped Josephson junctions; resonant modes; series array self-emission; terahertz frequency oscillator; Frequency measurement; Josephson junctions; Junctions; Physics; Resonant frequency; Substrates; Dielectric resonator antenna; Josephson junction; off-chip detection; self-emission;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2010.2097233
