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Spontaneous Raman Scattering by Polaritons. II. The Case of CdS and LiNbO 3 Crystals
Author(s) -
Obukhovskii V. V.,
Ponath H.,
Strizhevskii V. L.
Publication year - 1970
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.19700410241
Subject(s) - raman scattering , scattering , polariton , line (geometry) , phonon , x ray raman scattering , optics , phonon scattering , physics , photon , condensed matter physics , molecular physics , raman spectroscopy , materials science , mathematics , geometry
On the base of a general theory of Raman scattering (RS) by polaritons, previously developed by the authors, polariton RS in CdS and LiNbO 3 crystals was calculated at scattering radiation with λ 1 = 5145 Å and λ 1 = 4880 Å, respectively. The angular dependences of RS line integral intensities and besides this for CdS the scattering line shapes were calculated. It is shown in particular that in the CdS scattering spectrum at small angles the auxiliary low‐frequency “photon‐like” line consisting of two similar components should appear besides the usual “phonon‐like” line. In LiNbO 3 some scattering variants are studied at the excitation of nine phonon branches of E‐type and of four branches of A I ‐type.