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Resource Page / Technical Frequently Asked Questions / Optics FAQs / Optical Mirrors / How do you measure the reflectivity of mirrors with a reflectivity less than 99.5%?

How do you measure the reflectivity of mirrors with a reflectivity less than 99.5%?

Mirrors with reflectivities below 99.5% can be directly measured using reflection spectrophotometry. However, this technique will not work for mirrors with higher reflectivities because these systems reach the signal-to-noise ratio (SNR) limit.

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