Full mitigation of birefringence for high-precision optical experiments

Research Project

Project/Area Number	24K00649
Research Category	Grant-in-Aid for Scientific Research (B)
Allocation Type	Multi-year Fund
Section	一般
Review Section	Basic Section 15020:Experimental studies related to particle-, nuclear-, cosmic ray and astro-physics
Research Institution	National Astronomical Observatory of Japan
Principal Investigator	Eisenmann Marc 国立天文台, 重力波プロジェクト, 特任研究員 (80984541)
Co-Investigator(Kenkyū-buntansha)	WANG Haoyu 東京大学, 大学院理学系研究科(理学部), 特任研究員 (30933288) 都丸隆行国立天文台, 重力波プロジェクト, 教授 (80391712) 道村唯太東京大学, 大学院理学系研究科(理学部), 客員共同研究員 (80747006)
Project Period (FY)	2024-04-01 – 2027-03-31
Project Status	Granted (Fiscal Year 2024)
Budget Amount *help	¥18,460,000 (Direct Cost: ¥14,200,000、Indirect Cost: ¥4,260,000) Fiscal Year 2026: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000) Fiscal Year 2025: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000) Fiscal Year 2024: ¥12,090,000 (Direct Cost: ¥9,300,000、Indirect Cost: ¥2,790,000)
Keywords	birefringence / gravitational wave / mitigation
Outline of Research at the Start	We will develop a fast birefringence measurement and compensation scheme and a birefringent optical cavity to validate optical simulations. Finally, we will combine the 2D birefringence compensation technique with the birefringent optical cavity to demonstrate full mitigation of birefringence.