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Stimulated Extraordinary Polaritons in α‐Quartz
Author(s) -
Chapet M.,
Laval S.
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.2220710120
Subject(s) - polariton , dispersion (optics) , quartz , optics , range (aeronautics) , materials science , beam (structure) , physics , composite material
From an experimental study, dispersion curves are plotted of three extraordinary and one ordinary polariton modes in α‐quartz in the range 350 to 500 cm −1 . A theoretical formulation of the two‐beam method, experimentally used, makes the possible coupling between E and A 2 vibration modes obvious and the simultaneous existence of ordinary and extraordinary polaritons. The experimentally obtained dispersion curves are compared to the corresponding calculated branches. The agreement is quite good.