8mm波段Fabry-Perot谐振腔及其在约瑟夫森结特性测量中的应用  

An 8 mm Wave Fabry-Perot Resonator and Its Application in Josephson Junction Characteristic Measurements

作　　者：岳宏卫[1,2] 阎少林[1] 王争[1] 游峰[1] 宋凤斌[1] 季鲁[1] 何明[1] 赵新杰[1] 方兰[1] 

机构地区：[1]南开大学电子系,天津300071 [2]桂林电科技大学信息与通信学院,广西桂林541004

出　　处：《电子学报》2010年第10期2405-2409,共5页Acta Electronica Sinica

基　　金：国家重点基础研究发展规划(973计划)项目(No.2006CB601006);国家高技术研究发展计划(863计划)课题(No.2006AA03Z213);博士点基金(No.200800551009)

摘　　要：通过三维电磁仿真技术设计并制作了8mm波段Fabry-Perot谐振腔,并建立起一套Fabry-Perot谐振腔高温超导约瑟夫森结特性测试系统.用它测量了Tl2Ba2CaCu2O8(Tl-2212)高温超导薄膜双晶约瑟夫森结的毫米波辐照特性,得到高质量的夏皮罗台阶,并与在U形波导测试系统中测得的结果进行了比较,发现利用Fabry-Perot谐振腔测量技术可显著提高外加电磁场与约瑟夫森结的耦合效率,为进一步研究毫米/亚毫米波信号检测、THz波信号源等研究打下坚实的基础.An 8mm wave Fabry-Perot resonator was designed and fabricated by the technique of three-dimensional electromagnetic simulation.A measurement system for the characterization of high temperature superconductor Josephson junction was set up based on the Fabry-Perot resonator.The millimeter wave irradiation characteristic of Tl2Ba2CaCu2O8（Tl-2212）high temperature superconducting thin film bicrystal Josephson junction was measured using the system and high quality Shapiro steps were observed.Taking advantage of the Fabry-perot resonator technique,the efficiency of the coupling between applied electromagnetic wave and Josephson junction was enhanced markedly by compared with the measured results using U-type waveguide measurement system,which is greatly significant for the investigation of radiation and detection of millimeter/submillimeter wave and terahertz wave.

关 键 词：高温超导薄膜 Fabry-Perot谐振腔 约瑟夫森结 夏皮罗台阶 

分 类 号：TN12[电子电信—物理电子学]