高温超导太赫兹辐射源与检测器

High-temperature superconductor terahertz emitters and detectors

利用超导约瑟夫森器件中的约瑟夫森效应,超导材料可用于制备太赫兹辐射源和高灵敏的检测器。由于高温超导材料的能隙较高,因此用高温超导材料制备的太赫兹辐射源与检测器具有工作频率广、工作温度高等优点。文章将简要介绍南京大学超导电子学研究所在高温超导双晶晶界约瑟夫森结检测器和高温超导本征约瑟夫森结太赫兹辐射源等方面的工作进展。

Superconductors are suitable for fabricating terahertz emitters and detectors due to the well-known Josephson effect. Since the energy gap is much higher compared with traditional superconductors, high-temperature superconductor terahertz emitters and detectors are featured with broad frequency range and high operation temperature. We will introduce recent progresses in the Research Institute of Superconductor Electronics （RISE）, Nanjing University on intrinsic Josephson junction terahertz emitters and bicrystal grain boundary Josephson junction terahertz detectors made of high-temperature superconductors.