Resonance introduction control for FP cavity that has long optical storage time for 3rd generation gravitational wave detectors

2017 Fiscal Year Final Research Report

• Project/Area Number: 25287052
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Particle/Nuclear/Cosmic ray/Astro physics
• Research Institution: The University of Tokyo
• Principal Investigator: Miyoki Shinji 東京大学, 宇宙線研究所, 准教授 (20302680)
• Co-Investigator(Kenkyū-buntansha): 廣瀬 榮一 東京大学, 宇宙線研究所, 特任研究員(移行) (60587757) ; 宮川 治 東京大学, 宇宙線研究所, 助教 (90532680) ; 大橋 正健 東京大学, 宇宙線研究所, 教授 (80213833)
• Project Period (FY): 2013-04-01 – 2018-03-31
• Keywords: Fabry-Perot共振器 / 重力波 / レーザー干渉計 / PDH法 / 誘電多層膜

Outline of Final Research Achievements

We have succeeded to demonstrated a Fabry-Perot cavity resonance that had longer optical storage time than about 10 milliseconds which was realized in the 2nd generation gravitational wave telescope. This demonstration is essential to realize the resonant-sideband-extraction method that has larger signal recycling gain, that is about 50, in the 3rd generation gravitational wave telescope (GWT) than that in the 2nd generation GWT.

Free Research Field

重力波物理学