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Light Absorption and Dispersion by Impurity Centres at High Concentrations
Author(s) -
Lubchenko A. F.
Publication year - 1967
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.19670210240
Subject(s) - impurity , dispersion (optics) , absorption (acoustics) , materials science , electron , coupling (piping) , phonon , atomic physics , condensed matter physics , molecular physics , chemistry , optics , physics , organic chemistry , metallurgy , quantum mechanics , composite material
An investigation is made of the optical absorption and the shape of the dispersion lines due to impurity centres in a solid for the case of weak electron‐phonon coupling and high impurity concentration. It is shown that the shape of the absorption lines may be Lorentzian or Gaussian depending upon the magnitude of the shift in the electronic levels of the impurities due the interactions between impurity centres.