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Polariton Dispersion and Crystal Optics in Monoclinic Materials
Author(s) -
Claus R.
Publication year - 1978
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.2220880235
Subject(s) - polariton , monoclinic crystal system , dispersion relation , dispersion (optics) , phonon , surface phonon , condensed matter physics , dielectric , uniaxial crystal , optics , crystal optics , crystal (programming language) , materials science , physics , optical axis , quantum mechanics , laser , molecule , lens (geology) , programming language , computer science
Abstract A dispersion relation for long‐wave phonons and phonon‐polaritons in monoclinic polyatomic crystals is derived. It can be brought in the form of a generalized Fresnel equation for the wave normal referring to the principal dielectric axes at a fixed frequency in the visible. Angular dispersion of coupled phonon‐ and polariton‐modes in the crystallographic plane with directional dispersion of the dielectric axes, and the possibility of experiments are discussed.