Raman scattering is a spectroscopic technique used to observe vibrational, rotational, and other low-frequency modes in a system. It occurs when light interacts with molecules, causing a change in the energy of the scattered light, which provides valuable information about molecular vibrations and structure. In the context of excitons and polaritons, Raman scattering can reveal insights into the coupling between excitons and phonons, helping to understand the properties of these quasi-particles.
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