Development of a parametric signal amplification system for a gravitational-wave detector
Project/Area Number |
24684014
|
Research Category |
Grant-in-Aid for Young Scientists (A)
|
Allocation Type | Partial Multi-year Fund |
Research Field |
Particle/Nuclear/Cosmic ray/Astro physics
|
Research Institution | Tokyo Institute of Technology |
Principal Investigator |
|
Project Period (FY) |
2012-04-01 – 2017-03-31
|
Project Status |
Completed (Fiscal Year 2016)
|
Budget Amount *help |
¥24,960,000 (Direct Cost: ¥19,200,000、Indirect Cost: ¥5,760,000)
Fiscal Year 2015: ¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2014: ¥5,850,000 (Direct Cost: ¥4,500,000、Indirect Cost: ¥1,350,000)
Fiscal Year 2013: ¥9,880,000 (Direct Cost: ¥7,600,000、Indirect Cost: ¥2,280,000)
Fiscal Year 2012: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
|
Keywords | 重力波 / 非線形光学 / 光バネ / 非線形光学素子 / 干渉計 / 非線形結晶 / 信号増幅 / OPO / SHG / 振り子 / 軽量鏡 / 量子雑音 / 量子限界 / スクイーズ |
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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Report
(6 results)
Research Products
(23 results)