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Raman scattering in mixed crystals
Author(s) -
Martin T. P.
Publication year - 1975
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2220670112
Subject(s) - antiresonance , raman scattering , raman spectroscopy , nonlinear system , intensity (physics) , second harmonic generation , component (thermodynamics) , molecular physics , scattering , harmonic , nonlinear optics , mixed mode , simple (philosophy) , materials science , chemistry , optics , physics , condensed matter physics , atomic physics , resonance (particle physics) , quantum mechanics , laser , philosophy , epistemology , composite material
A simple model is used to describe the relative intensity of Raman scattering in mixed crystals with two mode behaviour. The local susceptibility, both linear and nonlinear, is assumed to be a sum of concentration independent atomic contributions. The four independent nonlinear model parameters are determined by the electro‐optic and second harmonic generation coefficients of the pure component materials. The concentration dependence of the Raman intensity of a longitudinal mode can demonstrate an antiresonance. Explicit calculations are made for CdS 1‐x Se x .