| 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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| 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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