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On the Theory of the Dynamic Stark Effect and Franz‐Keldysh Effect in a Resonant Electromagnetic Radiation Field
Author(s) -
Becker L.,
Enderlein R.,
Peuker K.
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.2220600213
Subject(s) - laser , physics , dielectric , stark effect , radiation , electric field , coupling (piping) , field (mathematics) , electromagnetic field , resonance (particle physics) , semiconductor , function (biology) , condensed matter physics , quantum electrodynamics , atomic physics , optics , quantum mechanics , materials science , mathematics , evolutionary biology , pure mathematics , metallurgy , biology
The influence of the electric field of a resonant laser radiation on the dielectric function of a three‐band semiconductor model is investigated theoretically. The laser radiation is assumed to be in resonance with the transition between the two unoccupied bands of the model. The relative contributions of the dynamic Stark effect due to the interband coupling caused by the laser field and of the Franz‐Keldysh effect due to the intraband coupling are discussed. The laser‐radiation‐induced change of the real part of the dielectric function is calculated. The corresponding result for the imaginary part is in agreement with an earlier result of other authors. Explicit line shapes for the change of the real and imaginary part of the dielectric function are given with parameter values chosen close to those of GaAs.