2016 Fiscal Year Final Research Report
Development of a parametric signal amplification system for a gravitational-wave detector
| Project/Area Number |
24684014
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| Research Category |
Grant-in-Aid for Young Scientists (A)
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| Allocation Type | Partial Multi-year Fund |
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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) |
2012-04-01 – 2017-03-31
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| Keywords | 重力波 / 非線形光学 / 光バネ |
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| Outline of Final Research Achievements |
An optical spring can be formed via radiation pressure by detuning a distance of two test masses in a gravitational-wave detector from a integer multiple of the laser wavelength. The susceptibility of the detector to gravitational waves is enhanced at the resonant frequency of the optical spring. We propose to use a non-linear crystal inside the signal-recycling cavity to increase the resonant frequency so that one can expect to observe gravitational waves from, for example, a merger of binary neutron stars.
We constructed a prototype interferometer at Tokyo Tech and succeeded in operating a signal-recycled Michelson interferometer with a non-linear crystal inside the recycling cavity. We propose this technique to a German detector and the success of our experiment is an important milestone.
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| Free Research Field |
重力波物理学
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