ENHANCED OPTICAL DETECTION IN A JOSEPHSON JUNCTION

被引：2

作者：

Wire, M. S. ^{[1
]}

Heflinger, L. O. ^{[1
]}

Dalrymple, B. J. ^{[1
]}

Leung, M. ^{[1
]}

Pham, T. ^{[1
]}

Eaton, L. R. ^{[1
]}

Silver, A. H. ^{[1
]}

机构：

[1] TRW Space & Technol Grp, Paris, France

来源：

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY | 1993年 / 3卷 / 01期

关键词：

D O I：

10.1109/77.233440

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We have measured shifting of the energy gap of a Nb Josephson junction under direct optical illumination. The response is linear with optical input power over more than 5 orders of magnitude, and is nearly independent of temperature from 4 to 8 K. The rise time of this signal is faster than the 2 mu s rise time of the chopped light signal. These direct signals are 500 to 1500 times larger than those obtained when the same optical power is focused elsewhere on the substrate. This enhanced direct response is interpreted as resulting from thermal isolation of the Josephson junction from the substrate due to thermal boundary resistance.

引用

页码：2107 / 2110

页数：4

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