Development of a parametric amplification method of a gravitational wave signal for the observation of a binary neutron star merger
| Project/Area Number |
17H02886
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Particle/Nuclear/Cosmic ray/Astro physics
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| Research Institution | Tokyo Institute of Technology |
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Principal Investigator |
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| Project Period (FY) |
2017-04-01 – 2021-03-31
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| Project Status |
Completed (Fiscal Year 2020)
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| Budget Amount *help |
¥18,330,000 (Direct Cost: ¥14,100,000、Indirect Cost: ¥4,230,000)
Fiscal Year 2020: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2019: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2018: ¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000)
Fiscal Year 2017: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
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| Keywords | 重力波 / 光バネ / 非線形光学 / 干渉計 / 信号増幅 / パラメトリック増幅 / 中性子星連星 / 光干渉計 / 量子雑音 / 宇宙物理 / 量子光工学 / 超精密計測 |
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| Outline of Final Research Achievements |
There have been 50 cases of gravitational-wave events reported since the first discovery accomplished by the LIGO telescope in 2015. A few of them are the events by binary neutron stars, which are expected to generate a 4-5kHz burst signal at the merger. Current telescopes, however, cannot observe the merger signal as their sensitivities in the band is not as good. In this research, we propose to implement a non-linear crystal for the parametric signal amplification process to enhance the opto-mechanical coupling and then to improve the sensitivity at the 4-5kHz. We built a signal-recycled interferometer and a Fabry-Perot cavity and have succeeded in demonstrating the parametric signal amplification and in observing the optical spring.
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| Academic Significance and Societal Importance of the Research Achievements |
重力波の初観測以降、次世代望遠鏡の計画が世界各地で始まっている。我々が全世界に先駆けて実施したパラメトリック信号増幅は国際的な注目をあび、ここ数年で類似の提案が相次いだ。そして、いくつかのプロトタイプ実験が行われ、次世代望遠鏡にそれらの技術を組み込むかどうかの議論が活性化している。現行の第二世代までは、欧米日の望遠鏡が同じ周波数帯での高感度化を目指したが、次世代では、それぞれが特徴を発揮して、さまざまな望遠鏡が実現していくだろう。本研究がもたらした意義はとても大きいと考えている。
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Report
(5 results)
Research Products
(27 results)
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[Journal Article] Measurement of optical losses in a high-finesse 300 m filter cavity for broadband quantum noise reduction in gravitational-wave detectors2018
Author(s)
E. Capocasa, Y. Guo, M. Eisenmann, Y. Zhao, A. Tomura, K. Arai, Y. Aso, M. Marchio, L. Pinard, P. Prat, K. Somiya, R. Schnabel, M. Tacca, R. Takahashi, D. Tatsumi, M. Leonardi, M. Barsuglia, and R. Flaminio
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Journal Title
Phys. Rev. D
Volume: 98
Issue: 2
Pages: 022010-022010
DOI
Related Report
Peer Reviewed / Int'l Joint Research
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[Journal Article] Mirror actuation design for the interferometer control of the KAGRA gravitational wave telescope2017
Author(s)
Michimura Yuta , Shimoda Tomofumi , Miyamoto Takahiro , Shoda Ayaka , Okutomi Koki , Fujii Yoshinori , Tanaka Hiroki , Barton Mark A , Takahashi Ryutaro , Aso Yoichi , et al.
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Journal Title
Classical and Quantum Gravity
Volume: 34
Issue: 22
Pages: 225001-225001
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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