Development of alignment sensing and control technic for degenerated cavity used in next generation laser interferometer gravitational wave observatory.

2014 Fiscal Year Final Research Report

• Project/Area Number: 25610059
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Particle/Nuclear/Cosmic ray/Astro physics
• Research Institution: Hosei University
• Principal Investigator: SATO Shuichi 法政大学, 理工学部, 教授 (30425409)
• Project Period (FY): 2013-04-01 – 2015-03-31
• Keywords: 重力波

Outline of Final Research Achievements

We have developed novel design of sensing technique for alignment control of the laser interferometer mirrors, by introducing modified Gouy phase inside cavities. We could give a drastic solution for outstanding problem known as signal degeneracy of the traditional designed degenerated cavities, and proceeded the proof-of-principal experiment. As the sensing simulation using KAGRA parameters confirmed to give similar effects, we have proceeded the experiment: the design and fabrication of the optical, mechanical and control systems.

Free Research Field

重力波物理学