Advanced LIGO
California Institute of Technology · Louisiana State University · +85 more institutions
Abstract
The Advanced LIGO gravitational wave detectors are second-generation instruments designed and built for the two LIGO observatories in Hanford, WA and Livingston, LA, USA. The two instruments are identical in design, and are specialized versions of a Michelson interferometer with 4 km long arms. As in Initial LIGO, Fabry–Perot cavities are used in the arms to increase the interaction time with a gravitational wave, and power recycling is used to increase the effective laser power. Signal recycling has been added in Advanced LIGO to improve the frequency response. In the most sensitive frequency region around 100 Hz, the design strain sensitivity is a factor of 10 better than Initial LIGO. In addition,…
Citation impact
- FWCI
- 89.81
- Percentile
- 100%
- References
- 63
Authors
701Topics & keywords
- LIGO
- Physics
- Interferometry
- Gravitational wave
- Sensitivity (control systems)
- Michelson interferometer
- Optics
- Gravitational-wave observatory
- Affordable and clean energy
Funding
- NSNational Science Foundation
- NANational Aeronautics and Space Administration
- APAlfred P. Sloan Foundation
- LTLeverhulme Trust
- SFScottish Funding Council
- SUScottish Universities Physics AllianceAward: GEO600
- NRNational Research Foundation
- COCouncil of Scientific and Industrial Research, India
- ICIndustry Canada
- MDMinisterio de Economía y Competitividad
- HSHungarian Scientific Research Fund
- NRNational Research Foundation of Korea
- MDMinistero dello Sviluppo Economico
- INIstituto Nazionale di Fisica Nucleare
- GDGovern de les Illes Balears
- SAScience and Technology Facilities Council