PHOTODETECTING DEVICE HAVING JOSEPHSON JUNCTIONS

A photodetecting device having Josephson junctions, comprises an insulating substrate, a polycrystalline superconductor film formed on the insulating substrate such that Josephson junctions are formed at grain boundaries, the superconductor film having a first region subjected to light illumination,...

Full description

Saved in:
Bibliographic Details
Main Authors YOICHI ENOMOTO, TOSHIAKI MURAKAMI, TAKAHIRO INAMURA
Format Patent
LanguageEnglish
Published 05.12.1984
Subjects
BASIC ELECTRIC ELEMENTS
COLORIMETRY
ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT,POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED,VISIBLE OR ULTRA-VIOLET LIGHT
MEASURING
PHYSICS
RADIATION PYROMETRY
SEMICONDUCTOR DEVICES
TESTING
Online AccessGet full text

Cover

More Information
Summary:A photodetecting device having Josephson junctions, comprises an insulating substrate, a polycrystalline superconductor film formed on the insulating substrate such that Josephson junctions are formed at grain boundaries, the superconductor film having a first region subjected to light illumination, and second and third regions formed contiguously at both sides of the first region such that a width of each of the second and third regions is wider than that of the first region, an input circuit for supplying a predetermined bias current between the second and third regions, and an output circuit for detecting a change in voltage between the second and third regions, one terminal of said input circuit and one terminal of said output circuit being commonly grounded, wherein the superconductor film comprises BaPb1-xBixO3 (where 0.32</=x</=0.35). This simple photodetecting device can detect an optical signal at high speed with high sensitivity.
Bibliography:Application Number: GB19840011830