2013 Fiscal Year Final Research Report
Application of the high-Tc superconducting terahertz emitter to precise material research
| Project/Area Number |
24654097
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Single-year Grants |
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| Research Field |
Condensed matter physics II
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| Research Institution | University of Tsukuba |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
KADOWAKI Kazuo 筑波大学, 数理物質系, 教授 (00272170)
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| Project Period (FY) |
2012-04-01 – 2014-03-31
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| Keywords | テラヘルツ / 高温超伝導 / ジョセフソン効果 / 光吸収係数 |
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| Research Abstract |
Using the high-Tc superconducting terahertz emitter, we developed a parameter-free system to measure the absorption coefficients of liquid samples in sub-terahertz frequency region. This allows us to get the absorption coefficient of water within 1% error at around 0.5 THz. Making a sample holder which allows the temperature to set between 5 and 70 degrees centigrade, we studied the absorption coefficient of Na2CO3 solution as functions of the concentration and temperature. We have also succeeded to modify the high-Tc superconducting terahertz emitter to work in liquid nitrogen, and developed a helium-free measurement system with a Schottky barrier diode detector.
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