2020 Fiscal Year Final Research Report
Temperature measurement by coherence of thermal radiation
| Project/Area Number |
19K15004
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| Research Category |
Grant-in-Aid for Early-Career Scientists
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| Allocation Type | Multi-year Fund |
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| Review Section |
Basic Section 21030:Measurement engineering-related
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| Research Institution | National Institute of Advanced Industrial Science and Technology |
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Principal Investigator |
Imbe Masatoshi 国立研究開発法人産業技術総合研究所, 計量標準総合センター, 研究員 (00760191)
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| Project Period (FY) |
2019-04-01 – 2021-03-31
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| Keywords | 温度計測 / 干渉計測 / コヒーレンス |
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| Outline of Final Research Achievements |
This research was performed to realize thermometry by measuring spatial coherence of thermal radiation. The relation between spatial coherence and temperature of a radiation source as an object was studied, and the interferometer for the measurement of longitudinal spatial coherence of natural light was proposed, which enabled to measure spatial coherence distribution and have robustness against turbulence.
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| Free Research Field |
計測工学
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| Academic Significance and Societal Importance of the Research Achievements |
一般に，空間コヒーレンス計測はインコヒーレント光源から発生した回折波を対象としている．本研究では熱放射源の空間コヒーレンスを求めるために，計測系および計測対象物体の条件を検討した．また，熱放射のような自然光の光軸方向の空間コヒーレンス計測のための干渉計を創出した．コヒーレンス長を超える空間的なシアを与えることができ，時間コヒーレンスとは独立な計測を実現でき，光コヒーレンストモグラフィのような干渉計測システムの性能評価にも有効と考えられる．
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