LIGO Document E1800238-v1

CASI 300 mm focal length mirror substrate

Document #:
LIGO-E1800238-v1
Document type:
E - Engineering documents
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Abstract:
The CASI system at Caltech is currently limited by the scatter of an internal mirror. We will replace this mirror with a LIGO class mirror.

Requirements
3 inches in diameter, 0.5" thick to mount in a Newport mount - so dimensional tolerances are wide.
Newport Mount https://www.newport.com/medias/sys_master/images/images/hb8/hb9/8933918998558/A-4-3-S.pdf
300 mm focal length - on a moveable mount, so tolerances are wide.
Surface Quality - LIGO class - so assume few defects and good microroughness. Phase fidelity is not required.

https://trello.com/c/qg9H5RlL
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