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Resource Page / Technical Frequently Asked Questions / Frequently Asked Questions / Lasers / If CRDS is more accurate, why isn’t CRDS always used to measure the reflectivity of mirrors?

If CRDS is more accurate, why isn’t CRDS always used to measure the reflectivity of mirrors?

CRDS can only be used to measure mirrors with a reflectivity above 99.5% because lower reflectivities result in ring down times that are too fast for the system to detect. The best technique to determine reflectivity depends on the reflectivity level and application requirements.

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