2017 Fiscal Year Final Research Report
Improvement of the frequency, intensity and temperature performance of the terahertz emission from high-Tc superconductor
| Project/Area Number |
15K04688
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (C)
|
| Allocation Type | Multi-year Fund |
|---|
| Section | 一般 |
|---|
| Research Field |
Optical engineering, Photon science
|
|---|
| Research Institution | University of Tsukuba |
|---|
Principal Investigator |
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
門脇 和男 筑波大学, 数理物質系, 教授 (00272170)
|
|---|
| Project Period (FY) |
2015-04-01 – 2018-03-31
|
| Keywords | テラヘルツ / ジョセフソン効果 / 高温超伝導 |
|---|
| Outline of Final Research Achievements |
Terahertz electromagnetic wave emitter made with high-Tc superconductor Bi2Sr2CaCu2O8+δ was studied, with the aim of increasing the radiation output, widening the radiation frequency, and raising the operation temperature. We worked on the development of techniques which fabricate the device arrays of 1×4～2×7 and efficiently remove the heat generated in the devices, and the improvement of the device structure, and so on. As a result, we succeeded in making the radiation output 2.7 times compared with the highest before this project (from ～30 μW to ～80 μW). The highest intensity was observed at the temperature of 72.5 K, implying the improvement of the operation temperature performance. The highest radiation frequency was successfully expanded to 2.4 THz.
|
| Free Research Field |
固体物理
|
