Brillouin Scattering

Brillouin scattering is a phenomenon that occurs when light passes through a material and interacts with its internal sound waves, or vibrations. As the light travels, it can scatter off these sound waves, causing a change in the light’s frequency and direction. This effect can provide valuable information about the material's properties, such as density and temperature. It's commonly used in various fields, including telecommunications and material science, to study the characteristics of optical fibers and other substances. Essentially, it connects the behavior of light with the mechanical properties of materials.