Development of laser sources with a sub-Hertz linewidth using
| Project/Area Number |
23656042
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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 |
Applied optics/Quantum optical engineering
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| Research Institution | The University of Tokyo |
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Principal Investigator |
TORII Yoshio 東京大学, 大学院・総合文化研究科, 准教授 (40306535)
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| Research Collaborator |
AOKI Takatoshitorii 東京大学, 大学院・総合文化研究科, 助教 (30328562)
TAKEUCHI Makoto 東京大学, 大学院・総合文化研究科, 助教 (60552106)
KUGA Takahiro 東京大学, 大学院・総合文化研究科, 教授 (60195419)
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| Project Period (FY) |
2011 – 2012
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| Project Status |
Completed (Fiscal Year 2012)
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| Budget Amount *help |
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2012: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2011: ¥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 / 分光 / 半導体レーザー / ホローカソードランプ / ストロンチウム / 偏光分光 / ヒートパイプ |
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| Research Abstract |
We have proven that the mechanism of laser linewidth reduction using the traditionalPound-Drever-Hall method is mathematically equivalent to that using the signal of polarization spectroscopy provided that the optical density of the atomic sample is well below unity. A proof-of-principle experiment was conducted using a Rb vapor cell. We performed polarization spectroscopy of Li6 and proved that the saturation of the transition caused by the pump beam enables polarization spectroscopy without spin polarization. As a source of Sr for spectroscopy, we examine the performance of the Sr hollow cathode lampusing the 461nm（1S0-1P1）transition and proved that polarization spectroscopy relying onpump-beam-induced saturation was possible even in a hollow cathode discharge.
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Report
(3 results)
Research Products
(10 results)
