2016 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)
辰巳 大輔 国立天文台, 光赤外研究部, 助教 (70333276)
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| Project Period (FY) |
2015-04-01 – 2018-03-31
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| Keywords | gravitational wave / squeezing / optical cavity |
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| Outline of Annual Research Achievements |
During the second year we continued the development of the filter cavity and of the squeezer.
Regarding the filter cavity we completed the construction of the mirrors. These were characterized. We also install the remaining three suspensions and implement their local control. In addition we realize and install the mirrors for the mode-matching telescope as well as the Faraday-Isolator. This work was done in collaboration with the laboratory "AstroParticules et Cosmologie" in Paris (France). We received four visits of about one month each from a PhD student and one staff member to support the work at NAOJ.
Regarding the squeezer we install and operated the second harmonic generator. This allowed the generation of a laser beam at 532 nm required for the control of the squeezer and for the control of the filter cavity. We also designed the Optical Parametric Amplifier and prepare the two laser beams required for its control. This work was done in collaboration with the University of Hamburg, Beijing Normal University and the University of Trento in Italy. We received the visit of one master student from China for a duration of six months and of one postdoc from Italy for one month to support this work at NAOJ.
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| Current Status of Research Progress |
Current Status of Research Progress
2: Research has progressed on the whole more than it was originally planned.
Reason
The work proceeded as foreseen.
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| Strategy for Future Research Activity |
In the last year we will install the filter cavity mirrors in the TAMA vacuum system and implement its control using the beam from the Second Harmonic Generator. In parallel we will continue the construction of the components for the vacuum squeezed source and their implementation on the optical table.
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Research Products
(13 results)
