2017 Fiscal Year Annual Research Report
Demonstration of frequency dependent squeezing for next generation GW detectors
| Project/Area Number |
15H02095
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| Research Institution | National Astronomical Observatory of Japan |
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Principal Investigator |
フラミニオ ラファエレ 国立天文台, 重力波プロジェクト推進室, 特任教授 (10723108)
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| Co-Investigator(Kenkyū-buntansha) |
宗宮 健太郎 東京工業大学, 理学院, 准教授 (10582603)
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| Project Period (FY) |
2015-04-01 – 2018-03-31
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| Keywords | gravitational wave / quantum noise / squeezed vacuum / filter cavity |
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| Outline of Annual Research Achievements |
During FY2017 the filter cavity was assembled and aligned on both the green beam produced with the second harmonic generator and the infrared beam of the main laser. Then the cavity was locked to the resonance of the green beam. Finally the difference in frequency between the infrared beam and the green beam was tuned so to have both beam resonant in the filter cavity at the same time. In these conditions the optical losses experienced by the infrared beam in the cavity were measured and found to be consistent with the simulation done beforehand. A paper has been written on this result and it will be submitted to a journal soon.
In parallel all the components for producing the squeezed vacuum state to be injected into the cavity have been built and assembled.
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| Research Progress Status |
29年度が最終年度であるため、記入しない。
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| Strategy for Future Research Activity |
29年度が最終年度であるため、記入しない。
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Research Products
(8 results)
