Flux-flow-type Josephson oscillator for millimeter and submillimeter wave region. IV. Thin-film coupling

J. Qin, Keiji Enpuku, K. Yoshida

Research output: Contribution to journalArticle

38 Citations (Scopus)

Abstract

Power emission from a flux-flow-type Josephson oscillator with a thin-film coupling method is studied experimentally. The thickness of one electrode of the oscillator is made thin enough to allow electromagnetic fields generated by the oscillator to be emitted through the thin-film electrode. Radiation power from the oscillator is detected with superconductor-insulator-superconductor detectors, which are fabricated on top of the oscillator. Experimental results show that sufficient power can be obtained from the oscillator by using the thin-film coupling method when the thickness of the electrode is comparable to the London penetration depth. The results obtained are in reasonable agreement with theoretical predictions. The thin-film coupling method will be useful when the oscillator is connected to external circuits, such as an impedance matching circuit.

Original languageEnglish
Pages (from-to)1130-1135
Number of pages6
JournalJournal of Applied Physics
Volume63
Issue number4
DOIs
Publication statusPublished - Dec 1 1988

Fingerprint

submillimeter waves
millimeter waves
oscillators
thin films
electrodes
SIS (superconductors)
impedance matching
electromagnetic fields
penetration
detectors
radiation
predictions

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

Flux-flow-type Josephson oscillator for millimeter and submillimeter wave region. IV. Thin-film coupling. / Qin, J.; Enpuku, Keiji; Yoshida, K.

In: Journal of Applied Physics, Vol. 63, No. 4, 01.12.1988, p. 1130-1135.

Research output: Contribution to journalArticle

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