LIGO optics: initial and advanced
The LIGO project has completed the installation of large fused silica optical components in the vacuum systems of its observatories. Commissioning work on the Hanford 2 km interferometer has determined an upper limit to the optics losses, allowing comparison with design and pre-installation testing. Planning and development of sapphire optics for the next generation, advanced LIGO detector is now underway, including polishability, optical homogeneity, absorption, and birefringence. The advanced optics development also includes research aimed at lowering coating loss.
© 2002 Society of Photo-Optical Instrumentation Engineers (SPIE). This work is supported by the National Science Foundation under Cooperative Agreement PHY-9210038.
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