Frequency detection of focused sub-THz waves using a high- Tc Josephson junction

T. Miyadera, I. Kawayama, Toshihiko Kiwa, Keiji Tsukada, M. Tonouchi

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

We have proposed a new type of frequency detection system of sub-terahertz electromagnetic waves using a photomixing technique and a Josephson junction detector. The photomixer illuminated by two lasers with different wavelengths generates coherent electromagnetic waves that include a frequency component corresponding to the frequency difference of the two lasers. The generated electromagnetic waves were radiated from a horn antenna and focused to the Josephson junction detector with Si lens. The high-Tc Josephson junction operates as a frequency detector for electromagnetic waves. Using this system, we observed the Shapiro steps of 188 μV that correspond to the frequencies of 90.8 GHz.
Original languageEnglish
Pages (from-to)1726-1730
Number of pages5
JournalPhysica C: Superconductivity and its Applications
Volume426
Issue numberII
DOIs
Publication statusPublished - Oct 1 2005

Fingerprint

Josephson junctions
Electromagnetic waves
electromagnetic radiation
Detectors
detectors
horn antennas
Terahertz waves
Horn antennas
Lenses
lenses
Wavelength
Lasers
wavelengths
lasers

Keywords

  • Photomixing
  • Josephson junction
  • Shapiro step
  • Infrared submillimeter wave microwave and radiowave sources
  • Josephson devices

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Frequency detection of focused sub-THz waves using a high- Tc Josephson junction. / Miyadera, T.; Kawayama, I.; Kiwa, Toshihiko; Tsukada, Keiji; Tonouchi, M.

In: Physica C: Superconductivity and its Applications, Vol. 426, No. II, 01.10.2005, p. 1726-1730.

Research output: Contribution to journalArticle

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