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Directional Dependence of Extraordinary Infrared Oscillator Parameters of Uniaxial Crystals (II)
Author(s) -
Lamprecht G.,
Merten L.
Publication year - 1973
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.2220550103
Subject(s) - dispersion (optics) , infrared , quartz , physics , dispersion relation , spectrum (functional analysis) , optics , condensed matter physics , materials science , mathematical analysis , quantum mechanics , mathematics , composite material
The classical dispersion equation for the extraordinary IR spectrum of uniaxial crystals is shown to be valid, even if damping is included. The directional dependence of the damping factors γ j (ϑ) and their effect on the other oscillator parameters (dispersion frequencies ω j (ϑ), oscillator strengths 4 πσ j (ϑ) is investigated in detail. Evidence is given for the validity of a sum rule of damping factors. The theory is applied to MgF 2 , ZnF 2 and α‐quartz.