Development of a high-speed and high-sensitive optical output system for high-performance magnetic devices

高性能磁性器件高速高灵敏光输出系统的开发

• 批准号: 20360159
• 负责人: MURAKAMI Hironaru
• 金额: $ 12.06万
• 依托单位: Osaka University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2008
• 资助国家: 日本
• 起止时间: 2008 至 2010
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-20360159/
• 关键词: 磁気光学効果; 磁束量子; 磁気デバイス; 超伝導磁束量子デバイス; レーザー; 交流変調法; 高温超伝導体; 高温超伝導テープ線材; 電流変調; ガーネット; ガルバノメータ

A high-speed and high-sensitive laser scanning magneto-optical microscope has been developed as a diagnostic apparatus and an optical output interface for magnetic devices. Using this system we have succeeded in the fast and quantitative imaging of a magnetic field distribution in superconductor devices with a sensitivity of ～100μT, and also succeeded in the detection of a single flux quantum generated in a superconducting loop. Furthermore, we succeeded in the imaging of weak magnetic field distribution around superconducting strip-line applied with a current as small as ～1mA by means of ac-modulation technique.

研制了一种高速高灵敏度激光扫描磁光显微镜，作为磁设备的诊断仪器和光学输出接口。利用该系统，我们成功地对超导器件中的磁场分布进行了快速、定量的成像，其灵敏度为~100μT，并成功地探测到了超导回路中产生的单磁通量子。此外，我们还利用交流调制技术成功地对电流为~1 mA的超导带状线周围的弱磁场分布进行了成像。

项目成果

Detection of Magnetic Signal in High-Tc Superconductor Devices by Scanning Laser Magneto-Optical Microscope

通过扫描激光磁光显微镜检测高温超导器件中的磁信号

• 发表时间: 2009
• 期刊: IEEE Trans. Supercond.
• 作者: R. Kitamura;H. Murakami;I. Kawayama and M. Tonouchi
• 通讯作者: I. Kawayama and M. Tonouchi

Observation of magnetic flux distribution in high-Tc superconductors by ahigh-sensitive scanning laser mngneto-optical imaging sysytem

高灵敏扫描激光磁光成像系统观测高温超导体磁通量分布

• 发表时间: 2008
• 作者: H. Murakami;R. Kitamura;I. Kawayama;M. Tonouchi
• 通讯作者: M. Tonouchi

Superconductor Photonics for Terahertz Electronics

太赫兹电子超导光子学

• 发表时间: 2009
• 期刊: IEEE Xplore, Conference Series, 2009 IEEE Tronto Intrenational Corference
• 作者: wao Kawayama;Yasushi Doda;Hironaru Murakami;Masayoshi Tonouchi
• 通讯作者: Masayoshi Tonouchi

Virtual Journal of Applications of Superconductivityに採用された論文のWEBページを以下に示す。

Virtual Journal of Applications of Superconductivity 接受的论文网页如下所示。

Development of a scanning laser magneto-optical detection system

扫描激光磁光探测系统的研制

• 发表时间: 2008
• 作者: R. Kitamura;H. Murakami;I. Kawayama;M. Tonouchi
• 通讯作者: M. Tonouchi