Development of a new Superconducting Submillimeter Wave Oscillator

新型超导亚毫米波振荡器的开发

• 批准号: 03452095
• 负责人: YOSHIDA Keiji
• 金额: $ 2.94万
• 依托单位: KYUSHU UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (B)
• 财政年份: 1991
• 资助国家: 日本
• 起止时间: 1991 至 1992
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-03452095/
• 关键词: Submillimeter Wave; Superconducting Oscillator; Josephson Junction

The prupose of this research is to develop a new superconducting oscillator for measuring submillimeter waves. In this research we obtained the following results:1.Evaluation of the Performance of the Flux-Flow Oscillator(FFO)We succeeded in the observation of the oscillation characteristics in the frequency range between 100GHz and 1500GHz using NbN/Pb Josephson junctions and Nb/Al/Nb Josephson junctions. Using the former junction we showed that the currents of 1-3 mA can be induced in the striplines. Using the latter junction we succeeded in obtaining oscillation output at frequencies more than 1THz.2.Development of Impedance Matching Circuit with Inductive Coupling MethodWe showed by simulation that broad band matching circuits can be realized using double resonance effects. Using this design we fabricated an FFO using NbN/Pb Josephson junction and a stripline made of NbN/Nb_2O_5/Nb,and succeed in demonstrating the validity of the inductive coupling method.

这项研究的目的是开发一种用于测量亚毫米波的新型超导振荡器。在本研究中我们获得了以下成果：1.磁通流振荡器（FFO）的性能评估我们利用NbN/Pb约瑟夫森结和Nb/Nb/Pb约瑟夫森结成功地观察了100GHz至1500GHz频率范围内的振荡特性。 Al/Nb 约瑟夫森结。使用前一个结点，我们表明可以在带状线上感应出 1-3 mA 的电流。利用后一个结，我们成功地获得了频率超过1THz的振荡输出。2.电感耦合法阻抗匹配电路的开发我们通过仿真表明，利用双谐振效应可以实现宽带匹配电路。利用该设计，我们利用NbN/Pb约瑟夫森结和NbN/Nb_2O_5/Nb带状线制作了FFO，并成功证明了电感耦合方法的有效性。

项目成果

T.Kisu et al.: "Dependence of Magnetic Field Penetration Depth on Resistivity and Critical Temperature in C-Axis-Oriented YBaCuO Thin Films" Jpn.J.Appl.Phys.31. L1027-1030 (1992)

T.Kisu 等人：“C 轴取向 YBaCuO 薄膜中磁场穿透深度对电阻率和临界温度的依赖性”Jpn.J.Appl.Phys.31。

Md.S.Hossain et al.: "Enlargement of Kinetic Inductance of NbN Superconducting Thin Films for Device Applications" Jpn.J.Appl.Phys.31. 1033-1038 (1992)

Md.S.Hossain 等人：“用于器件应用的 NbN 超导薄膜的动感放大”Jpn.J.Appl.Phys.31。

K.Yoshida et al.: "LiNbO_3 Optical Modulator with Superconducting Electrodes" IEICE Trans.Electron. E75-C. 894-899 (1992)

K.Yoshida 等人：“具有超导电极的 LiNbO_3 光调制器”IEICE Trans.Electron。

K.Enpuku: "Modeling the dc Superconducting Quantam Interference Device Coupled to the MultHiTurn Input Coil" J.Appl.Phys.69. 7295-7300 (1991)

K.Enpuku：“对耦合到 MultHiTurn 输入线圈的直流超导量子干涉装置进行建模”J.Appl.Phys.69。

Md.S.Hossain et al.: "Enlargement of Kinetic Inductance of NbN Superconducting Thin Film forDevice Applications" Jpn.J.Appl.Phys.31. 1033-1038 (1992)

Md.S.Hossain 等人：“用于器件应用的 NbN 超导薄膜的动感放大”Jpn.J.Appl.Phys.31。