| Project/Area Number |
25610113
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Atomic/Molecular/Quantum electronics
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| Research Institution | The University of Tokyo |
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Principal Investigator |
TORII Yoshio 東京大学, 総合文化研究科, 准教授 (40306535)
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| Project Period (FY) |
2013-04-01 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2014: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2013: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
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| Keywords | レーザー / 量子エレクトロニクス / ホローカソード放電 / ストロンチウム / レーザー分光 / 周波数安定化 / ストロンチウム原子 / レーザー冷却 / 放電 |
|---|
| Outline of Final Research Achievements |
We aimed to develop a method to stabilize the laser frequency not by a traditional optical resonator made of glass but by atomic coherence of strontium atoms. To realize this method, we need to prepare an atomic sample with a sufficiently large spatial density (about 50% laser light absorption). For this purpose, we first developed a special atomic oven. However it was difficult to obtain more than 10% absorption due to inter-atomic collisions inside the stainless honeycomb tube at the oven exit. We also tried hollow cathode lamps as atomic sources, but we could obtain no more than 1% absorption even after the optimization of the buffer gas.
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