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Phonon‐Polaritons in Bilayer Systems. p‐Polarized Guided Wave Phonon‐Polaritons and Guided Wave Surface Phonon‐Polaritons
Author(s) -
Wendler L.
Publication year - 1984
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.2221230209
Subject(s) - polariton , phonon , surface phonon , condensed matter physics , physics , dielectric , optoelectronics
In a bilayer system consisting of two dielectric media with local, frequency‐dependent dielectric functions in addition to the surface phonon‐polaritons other types of p‐polarized phonon‐polaritons, guided wave phonon‐polaritons and a new type guided wave surface phonon‐polaritons, can exist. These phonon‐polaritons are associated with electromagnetic fields having standing wave character in one or in both layers in the direction normal to the surfaces. The regions in the ω — k ‖ plane where the different types of phonon‐polaritons of a bilayer system occur are discussed for the three physically different possibilities of combining two dielectric media. The dispersion curves and electric fields of guided wave phonon‐polaritons and guided wave surface phonon‐polaritons are calculated and presented in graphical form.