Terahertz direct detector using superconducting tunnel junctions

Chiko Otani, Seiichiro Ariyoshi, Hiroshi Matsuo, Takahiro Morishima, Masatsugu Yamashita, Kodo Kawase, Hiromi Sato, Hirohiko M. Shimizu

Research output: Contribution to journalConference articlepeer-review

5 Citations (Scopus)


High-sensitivity terahertz direct detectors using superconducting tunnel junctions were fabricated. They were designed for detecting terahertz radiation in the frequency range of 0.4 and 0.65 THz with the fractional bandwidth of above 10 percent. The results of their performance evaluation of five detector elements are presented. We show the results of the frequency response as well as that the absolute efficiency ranged from 10 to 30 percent and that the the sensitivity was 1.9 × 10-16 W Hz-0.5 in noise equivalent power.

Original languageEnglish
Pages (from-to)86-93
Number of pages8
JournalProceedings of SPIE - The International Society for Optical Engineering
Publication statusPublished - 2004 Jul 6
EventTerahertz and Gigahertz Electronics and Photonics III - San Jose, CA, United States
Duration: 2004 Jan 252004 Jan 26


  • Detector
  • High sensitivity
  • Superconducting tunnel junctions
  • Terahertz

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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