Terahertz imaging using a high-Tc superconducting Josephson junction detector

J. Du; A. D. Hellicar; L. Li; S. M. Hanham; N. Nikolic; J. C. MacFarlane; K. E. Leslie

doi:10.1088/0953-2048/21/12/125025

Terahertz imaging using a high-T_c superconducting Josephson junction detector

J. Du^*, A. D. Hellicar, L. Li, S. M. Hanham, N. Nikolic, J. C. MacFarlane, K. E. Leslie

^*Corresponding author for this work

Electronic, Electrical and Systems Engineering

Research output: Contribution to journal › Article › peer-review

33 Citations (Scopus)

Abstract

A high-T_c superconducting (HTS) detector based on a YBa ₂Cu₃O_7-x (YBCO) step-edge Josephson junction has been developed and applied to terahertz (THz) detection. The detector was coupled to a ring-slot antenna designed for operation at 600GHz, and used for THz imaging. The results suggest that the characteristic voltage and frequency of our HTS step-edge junctions can be readily optimized for the chosen THz frequency range at easily achievable temperatures. The images also clearly demonstrate some of the unique properties of THz radiation, including the sensitivity to water content and the ability to penetrate packaging materials.

Original language	English
Article number	125025
Journal	Superconductor Science and Technology
Volume	21
Issue number	12
DOIs	https://doi.org/10.1088/0953-2048/21/12/125025
Publication status	Published - 1 Dec 2008

ASJC Scopus subject areas

Ceramics and Composites
Condensed Matter Physics
Metals and Alloys
Electrical and Electronic Engineering
Materials Chemistry

Access to Document

10.1088/0953-2048/21/12/125025

Cite this

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abstract = "A high-Tc superconducting (HTS) detector based on a YBa 2Cu3O7-x (YBCO) step-edge Josephson junction has been developed and applied to terahertz (THz) detection. The detector was coupled to a ring-slot antenna designed for operation at 600GHz, and used for THz imaging. The results suggest that the characteristic voltage and frequency of our HTS step-edge junctions can be readily optimized for the chosen THz frequency range at easily achievable temperatures. The images also clearly demonstrate some of the unique properties of THz radiation, including the sensitivity to water content and the ability to penetrate packaging materials.",

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AU - Du, J.

AU - Hellicar, A. D.

AU - Li, L.

AU - Hanham, S. M.

AU - Nikolic, N.

AU - MacFarlane, J. C.

AU - Leslie, K. E.

PY - 2008/12/1

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AB - A high-Tc superconducting (HTS) detector based on a YBa 2Cu3O7-x (YBCO) step-edge Josephson junction has been developed and applied to terahertz (THz) detection. The detector was coupled to a ring-slot antenna designed for operation at 600GHz, and used for THz imaging. The results suggest that the characteristic voltage and frequency of our HTS step-edge junctions can be readily optimized for the chosen THz frequency range at easily achievable temperatures. The images also clearly demonstrate some of the unique properties of THz radiation, including the sensitivity to water content and the ability to penetrate packaging materials.

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