Article | REF: AF3458 V1

Diffusion of light through surfaces and volumes

Authors: Claude AMRA, Carole DEUMIÉ

Publication date: July 10, 2009

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1. Light scattering from a slightly rough surface

Most modern optical systems require total losses of less than a few 10 –4 of the incident flux. To limit scattering (figure 1 ), surfaces are carefully polished down to a fraction of a nanometer on materials such as silicon and glass. These surface states are then characterized by angular scattering measurements which, via modeling, enable the first statistical moments to be extracted.

Polished and honed surfaces of the same opaque glass
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Light scattering from a slightly rough surface