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Phase locking of an array of five High-Tc Josephson junction oscillators

✍ Scribed by J. Edstam; P. Larsson; E.A. Stepantsov; H.K. Olsson

Publisher
Elsevier Science
Year
1994
Tongue
English
Weight
182 KB
Volume
235-240
Category
Article
ISSN
0921-4534

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✦ Synopsis

We have phase locked a lumped array of five High-T c Josephson junction oscillators in the frequency range 140-400 GHz. The oscillator junctions were dc-biased in parallel using superconducting leads to ensure identical dc-voltages and oscillations frequencies (f=2eV/h). However, the junctions were connected in series for the high frequency currents. We find the output power of this phase locked oscillator array to be sufficient to modulate an on-chip detector junction with clear Shapiro steps and to be 0.09 I.tW at 250 GHz.

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