1. Characterization of Core Optics in Gravitational-Wave Detectors: Case Study of KAGRA Sapphire Mirrors
- Author
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Hiroaki Yamamoto, L. Pinard, D. Forest, Bill Reichman, Mark Gross, Liyuan Zhang, Eiichi Hirose, Christophe Michel, G. Billingsley, Laboratoire des matériaux avancés (LMA), Université Claude Bernard Lyon 1 (UCBL), and Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)
- Subjects
Physics::Instrumentation and Detectors ,interferometer ,measurement methods ,General Physics and Astronomy ,02 engineering and technology ,01 natural sciences ,Optics ,0103 physical sciences ,KAGRA ,[PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det] ,010306 general physics ,Physics ,Gravitational wave ,business.industry ,Detector ,mirror: surface ,021001 nanoscience & nanotechnology ,optics ,gravitational radiation detector ,Characterization (materials science) ,Core (optical fiber) ,Interferometry ,Sapphire ,High Energy Physics::Experiment ,0210 nano-technology ,business ,aluminum: oxygen - Abstract
International audience; We report the characterization of superlow-loss optics used in the second-generation gravitational-wave detectors currently in operation. The sapphire test-mass mirrors in the KAGRA detector are introduced as an example, but the techniques here are common to all detectors. In this work, we discuss mainly the surface topography obtained by interferometric techniques and the optical properties obtained with special setups.
- Published
- 2020