Detection of Pulsed Terahertz Waves Using High-Temperature Superconductor Josephson Junction

被引：7
|
作者：
Kaneko, Ryosuke [1 ]
Kawayama, Iwao [1 ,2 ]
Murakami, Hironaru [1 ]
Tonouchi, Masayoshi [1 ]
机构：
[1] Osaka Univ, Inst Laser Engn, Suita, Osaka 5650871, Japan
[2] Japan Sci & Technol Agcy, PRESTO, Kawaguchi, Saitama 3320012, Japan
来源：
APPLIED PHYSICS EXPRESS | 2010年 / 3卷 / 04期
关键词：
D O I：
10.1143/APEX.3.042701
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We report a novel terahertz (THz) detector with a high-Tc superconducting (HTS) Josephson junction. This detector was fabricated using a YBa(2)Cu(3)O(7-delta) grain boundary junction. Clear THz signals induced by THz-pulse radiation from an ultrafast photoconductive antenna excited by femtosecond optical pulses were observed. We investigated the characteristics of the detector by changing the parameters of THz radiation such as pump laser power for the THz emitter and THz polarization. The results indicate that the detector mainly detects the THz electric fields. This is the first demonstration of a detection of pulsed THz electric fields using an HTS Josephson junction. (C) 2010 The Japan Society of Applied Physics
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页数：3
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