13 August 1999 Metrology of LIGO core optics
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Proceedings Volume 3744, Interferometry '99: Techniques and Technologies; (1999) https://doi.org/10.1117/12.357716
Event: International Conference on Optical Metrology, 1999, Pultusk Castle, Poland
Core optical substrates for the Laser Interferometer Gravitational Wave Observatory are being manufactured and tested at CSIRO. These substrates are for use in long baseline Michelson interferometers with Fabry Perot cavities up to 4 km in length in each arm. The optics consist of 32 high quality fused silica substrates, comprising folding mirrors, end test masses, input test masses, recycling mirrors and beamsplitters. The dimensions of the substrates are 250 mm diameter by up to 100 mm thick. The optical surfaces are either flat or curved, with radii of curvature between 7 km and 15 km and tolerance bands on the radius equivalent to variations in sag (over 200 mm) of about 20 nm.
© (1999) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Bozenko F. Oreb, Bozenko F. Oreb, David I. Farrant, David I. Farrant, Christopher J. Walsh, Christopher J. Walsh, Achim J. Leistner, Achim J. Leistner, Frank J. Lesha, Frank J. Lesha, Philip S. Fairman, Philip S. Fairman, Carl M. Sona, Carl M. Sona, "Metrology of LIGO core optics", Proc. SPIE 3744, Interferometry '99: Techniques and Technologies, (13 August 1999); doi: 10.1117/12.357716; https://doi.org/10.1117/12.357716

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