Use Of Rayleigh-Brillouin Light Scattering To The Determination Of Physical Properties In Industrial Glasses (In French)

Optical methods are often used for non-destructive testing of transparent materials such as glasses. This paper presents a few examples of applications of this technique in glasses. Strain and composition gradients can be evidenced, elastic modulus in glass fibres of a few micrometers in diameter, third order elastic constants in pre-stressed glasses can be determined. Refractive index or thermal dilation coefficient can also be measured, even in the liquid state.