A phenomenological theory of Raman scattering by the q≈0 coupled plasmon-(LO) longitudinal-optical-phonon modes, which takes into account the electro-optic effect of the longitudinal electric fields associated with the coupled modes, is presented. Estimates of the scattering efficiency of the plasmon-like mode at high carrier densities, for which the major contribution comes from the electro-optic effect, are obtained using values of the electro-optic coefficient derived from second-harmonic light-generation data. For n-type GaAs with a carrier density of 3×{}10¹⁸/cm³, the scattering efficiency of the plasmon-like mode is found to be 1×{}10^-5. The theoretical treatment is also applicable to Raman scattering by the collective cyclotron excitation modes of free carriers in a magnetic field and by their coupled modes with LO phonons.
No takes yet. Share an insight, caveat, or question.
Burstein et al. (1967) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: