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Published December 8, 2020 | Published
Journal Article Open

Advanced LIGO Laser Systems for O3 and Future Observation Runs

Bode, Nina ORCID icon
Briggs, Joseph ORCID icon
Chen, Xu
Frede, Maik
Fritschel, Peter
Fyffe, Michael
Gustafson, Eric
Heintze, Matthew
King, Peter
Liu, Jian ORCID icon
Oberling, Jason
Savage, Richard L. ORCID icon
Spencer, Andrew ORCID icon
Willke, Benno ORCID icon

Abstract

The advanced LIGO gravitational wave detectors need high power laser sources with excellent beam quality and low-noise behavior. We present a pre-stabilized laser system with 70 W of output power that was used in the third observing run of the advanced LIGO detectors. Furthermore, the prototype of a 140 W pre-stabilized laser system for future use in the LIGO observatories is described and characterized.

Additional Information

© 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). Received: 29 October 2020; Accepted: 3 December 2020; Published: 8 December 2020. The authors gratefully acknowledge the support of the United States National Science Foundation (NSF) for the construction and operation of the LIGO Laboratory and Advanced LIGO; and the Science and Technology Facilities Council (STFC) of the United Kingdom and the Max-Planck-Society (MPS) for support of the construction of Advanced LIGO. Additional support for Advanced LIGO was provided by the Australian Research Council. The authors acknowledge the LIGO Scientific Collaboration Fellows program for additional support. LIGO was constructed by the California Institute of Technology and Massachusetts Institute of Technology with funding from the National Science Foundation, and operates under cooperative agreement PHY-1764464. LIGO was built under award PHY-0823459. Author Contributions: Conceptualization, N.B.; methodology, P.F., E.G., R.L.S. and B.W.; investigation, N.B., J.B., X.C., M.F. (Maik Frede), M.F. (Michael Fyffe), M.H., P.K., J.L., J.O., A.S.; writing—original draft preparation, N.B.; writing—review and editing, N.B. and B.W. All authors have read and agreed to the published version of the manuscript. The authors declare no conflict of interest.

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