Raman and Brillouin Scattering
We turn our attention now to study optical processes where the interaction of light with the medium is described as an inelastic scattering process. The wavelength of the scattered light is changed in a process that does not conserve the optical energy so that the net exchange of energy is either given to or taken from the material. The scattered energy loss characteristics are attributed to the internal structure of the medium. All materials, whether gas, liquid, or solid, exhibit specific frequency shifts, which are signatures or fingerprints revealing their internal quantum structure.
The optical interactions considered in the previous chapters exploited phenomena where total optical energy ...
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